CN105417497A - Production device and technology for high-concentration steady chlorine dioxide solution - Google Patents
Production device and technology for high-concentration steady chlorine dioxide solution Download PDFInfo
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- CN105417497A CN105417497A CN201510938143.1A CN201510938143A CN105417497A CN 105417497 A CN105417497 A CN 105417497A CN 201510938143 A CN201510938143 A CN 201510938143A CN 105417497 A CN105417497 A CN 105417497A
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- C01—INORGANIC CHEMISTRY
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- C01B11/00—Oxides or oxyacids of halogens; Salts thereof
- C01B11/02—Oxides of chlorine
- C01B11/022—Chlorine dioxide (ClO2)
Abstract
The invention relates to a production technology for a high-concentration steady chlorine dioxide solution. Sodium chlorate and concentrated sulfuric acid are used as reaction raw materials, the pH value is regulated to range from 5.5 to 6.5, then under the action of a precious metal catalyst layer, the sodium chlorate and the concentrated sulfuric acid react fully under normal temperature and normal pressure conditions to produce chlorine dioxide gas, finally, an alkaline stabilizing agent is adopted to fully absorb chlorine dioxide, and the steady chlorine dioxide solution with the concentration of chlorine dioxide up to 18-20wt% is obtained, and the concentration is 28% higher than that of a steady chlorine dioxide solution prepared with traditional technologies. With the adoption of the technology, the reaction time can be shortened by 24%-26%, the conversion rate of raw materials is higher than 98%, the purity of the produced chlorine dioxide gas is up to 98%, the obtained steady chlorine dioxide solution has higher stability and can be directly used as a disinfection stock solution, besides, the raw materials used in the technology are lower in cost, the production cost can be effectively reduced, and the technology is easy to popularize and apply.
Description
Technical field
The invention belongs to the technical field of chlorine dioxide production, be specifically related to a kind of production equipment and technique of high concentration of chlorine dioxide stable state liquid.
Background technology
In the last thirty years, dioxide peroxide, as a kind of Novel sterilizing oxygenant, is widely applied in developed country, is a kind of excellent sterilization oxygenant replacing liquid chlorine.Use chlorine can produce carcinogens haloform to after water sterilization in prior art, and can not haloform be produced in the water of chlorine dioxide treatment.Dioxide peroxide is classified as A I grade of efficiently and safely disinfecting agent by World Health Organization WHO, there is wide spectrum, quick-acting, nontoxic, consumption is few, drug effect is long, sterilization effect is by the plurality of advantages such as pH restriction, to single-cell protein materials comprise bacterium, virus, algae eradicative rate up to 100%, any toxic side effect can not be produced to humans and animals simultaneously.
At present, about the preparation method of dioxide peroxide mainly contains electrolytic process and the large class of chemical method two.
Electrolytic process adopts sodium-chlor as electrolytic solution, and drop in septate electrolyzer and carry out electrolysis, produce the mixed gas of dioxide peroxide, chlorine, ozone and hydrogen peroxide, by product is sodium hydroxide and hydrogen.But the deficiency of above-mentioned electrolytic process is that investment is comparatively large, raw material consumption is large, power consumption is high, and barrier film needs often cleaning and changes, and in product, dioxide peroxide proportion is less than 30%, and purity and output are all lower.
Chemical method is prepared dioxide peroxide and is mainly contained chlorite method and chlorate process, and chlorite method is higher because of cost of material, promotes the use of difficulty; Chlorate process is widely used because its cost of material is lower.Chlorate process is mainly raw material with sodium chlorate, methyl alcohol, urea, hydrogen peroxide etc. are reductive agent, at certain temperature (about 40-80 DEG C) and certain acidic medium, (conventional acidic medium is hydrochloric acid, sulfuric acid etc., acidic conditions is 2-9mol/L) in sodium chlorate reduced to obtain dioxide peroxide, but there is the problem that feed stock conversion is lower and purity of chlorine dioxide is lower in existing method.In actually operating, feed stock conversion is lower than 85%, and purity of chlorine dioxide is less than 90%.
Existing chlorate process is: oxymuriate is dissolved into the aqueous solution that concentration is 20-50%, and then add solution of chlorate, sulfuric acid and methyl alcohol or hydrogen peroxide or urea by chemical reaction equilibrium to reactor, 50-80 minute is reacted when temperature is 60-80 DEG C, the dioxide peroxide vacuum pump generated is extracted out, residual liquid discharge process.Aforesaid method output when continuous seepage dioxide peroxide is not high, and feed stock conversion is low.Reductive agent methyl alcohol, hydrogen peroxide, urea three are used alone usually, but if be reductive agent with methyl alcohol, speed of response is slow, and purity of chlorine dioxide is lower, and methyl alcohol is inflammable poisonous, uses dangerous; If take urea as reductive agent, reaction starts very slow, once reaction, speed but quickly, be difficult to control, easily blast, and feed stock conversion is lower, if be reductive agent with hydrogen peroxide, production cost is high, applies difficulty.
Summary of the invention
In order to solve the problems referred to above that prior art exists, the invention provides a kind of production equipment and the technique that improve the high concentration of chlorine dioxide stable state liquid of feed stock conversion at reduction production cost simultaneously.
The technical solution adopted in the present invention is:
A production equipment for high concentration of chlorine dioxide stable state liquid, comprises reactor and absorptive unit;
The top of described reactor is communicated with liquid material input channel, and the top of described reactor is communicated with first gas output tube one end for exporting chlorine dioxide, vertically arranges noble metal catalyst layer in the inside of described reactor;
The bottom of described absorptive unit is communicated with the other end of described first gas output tube.
Described absorptive unit comprise connect setting successively the first absorption tower, second absorption tower, the 3rd absorption tower;
The bottom on described first absorption tower is communicated with the other end of described first gas output tube, and the top on described first absorption tower is communicated with second gas output tube one end for exporting chlorine dioxide;
The bottom of described second absorption tower is communicated with the other end of described second gas output tube, and the top of described second absorption tower is communicated with the 3rd gas output tube one end for exporting chlorine dioxide;
The bottom on described 3rd absorption tower is communicated with the other end of described 3rd gas output tube;
Described reactor inner bottom part is provided with ultrasonic oscillator.
Described noble metal catalyst layer is platinum gauze, and in described platinum gauze, the diameter of platinum filament is 0.08-0.12mm, and the mesh diameter of described platinum gauze is 5-8cm.
The bottom of described reactor is also communicated with the liquid discharge tube road for discharging reaction residue;
Between the bottom on described first absorption tower and the bottom of described second absorption tower, first liquid transport pipe is set, described first liquid transport pipe is provided with the first valve, arrange second liquid transport pipe between the bottom of described second absorption tower and the bottom on described 3rd absorption tower, described second liquid transport pipe is provided with the second valve.
Further, a kind of production technique of high concentration of chlorine dioxide stable state liquid is also provided, comprises the following steps:
(1) using sodium chlorate solid and the vitriol oil as reaction raw materials, carrying out adjust ph after fully mixing is 5.5-6.5;
(2) under the effect of noble metal catalyst layer, described sodium chlorate and the vitriol oil are fully reacted under normal temperature and pressure conditions, generate chlorine dioxide;
(3) utilize alkaline stable state agent fully to absorb step (2) gained dioxide peroxide, obtain the dioxide peroxide stable state liquid of high density.
In step (1), the concentration of the described vitriol oil is 92-94wt%, and the mol ratio of described sodium chlorate solid and the described vitriol oil is 2:(1-1.1).
In step (2), described sodium chlorate and the vitriol oil fully react under Ultrasonic Conditions.
In step (3), described alkaline stable state agent carries out the rear obtained mixing solutions of fully mixing for adopting sodium hydrate solid, hydrogen peroxide, sodium carbonate solid according to mass ratio 2.8-3:0.4-0.5:1.8-2, and the pH of described mixing solutions is 9-10.5.
In the dioxide peroxide stable state liquid of described high density, the concentration of dioxide peroxide is up to 18-20wt%.
Beneficial effect of the present invention is:
1, the production equipment of high concentration of chlorine dioxide stable state liquid of the present invention, comprises reactor and absorptive unit; Be communicated with liquid material input channel by the top arranging described reactor, the top of described reactor is communicated with first gas output tube one end for exporting chlorine dioxide, vertically arranges noble metal catalyst layer in the inside of described reactor; The bottom of described absorptive unit is communicated with the other end of described first gas output tube; Thus first utilize described reactor as reaction vessel, under the effect of described noble metal catalyst layer, just can carry out fully reaction generation chlorine dioxide at normal temperatures and pressures by realization response raw material, the alkaline stable state agent in described absorptive unit is utilized fully to absorb described chlorine dioxide afterwards, in final acquisition high concentration of chlorine dioxide stable state liquid, the concentration of dioxide peroxide is up to 18-20wt%, and the concentration obtaining dioxide peroxide stable state liquid than traditional technology improves more than 28%; In addition, apparatus structure of the present invention is simple, and cost is lower, can realize suitability for industrialized production.
2, the production technique of high concentration of chlorine dioxide stable state liquid of the present invention, using sodium chlorate and the vitriol oil as reaction raw materials, adjust ph is 5.5-6.5, afterwards under the effect of described noble metal catalyst layer, make described sodium chlorate and the vitriol oil just can carry out fully reacting under normal temperature and pressure conditions generating chlorine dioxide, reaction equation is 2NaClO
3+ H
2sO
4→ 2ClO
2+ Na
2sO
4+ H
2o
2, finally alkaline stable state agent is adopted fully to absorb described dioxide peroxide again, obtain the dioxide peroxide stable state liquid of chlorine dioxide concentration up to 18-20wt%, the concentration obtaining dioxide peroxide stable state liquid than traditional technology improves more than 28%, present invention process can reduce reaction times 24-26%, starting material transformation efficiency is up to more than 98%, produce the high purity 98% of chlorine dioxide, the stability obtaining dioxide peroxide stable state liquid is higher, can directly use as sterilized stock solution, efficiently solve the production technique of dioxide peroxide in prior art, there is feed stock conversion low, speed of response is slow, the problem that purity of chlorine dioxide is low.In addition, present invention process adopts the cost of raw material lower, effectively can reduce production cost, be easy to apply.
Accompanying drawing explanation
Fig. 1 is the structural representation of the production equipment of a kind of high concentration of chlorine dioxide stable state liquid that the embodiment of the present invention 3 provides.
In figure: 1-reactor, 2-first absorption tower, 3-second absorption tower, 4-the 3rd absorption tower, 5-platinum gauze, 6-first valve, 7-second valve.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1
The present embodiment provides a kind of production equipment of high concentration of chlorine dioxide stable state liquid, comprises reactor and absorptive unit.
The top of described reactor is communicated with liquid material input channel, the top of described reactor is communicated with first gas output tube one end for exporting chlorine dioxide, in the inside of described reactor, vertically platinum gauze is set, in described platinum gauze, the diameter of platinum filament is 0.1mm, and the mesh diameter of described platinum gauze is 5cm.
The bottom of described absorptive unit is communicated with the other end of described first gas output tube.
Further, based on the production technique of the high concentration of chlorine dioxide stable state liquid of described device, comprise the following steps:
(1) add in described reactor 1064g sodium chlorate solid and 533g concentration be the vitriol oil of 92wt% as reaction raw materials, carrying out adjust ph after fully mixing is 5.5;
(2) under the effect of described platinum gauze, described sodium chlorate and the vitriol oil are fully reacted under normal temperature and pressure conditions, generate chlorine dioxide; Reaction equation is:
2NaClO
3+H
2SO
4→2ClO
2+Na
2SO
4+H
2O
2
After testing, in above-mentioned obtained chlorine dioxide product the content of dioxide peroxide up to 98%;
(3) take 30g sodium hydrate solid successively, 15g concentration is 30wt% hydrogen peroxide, 20g sodium carbonate solid, after carrying out fully mixing, obtained pH is that the mixing solutions of 9 is as alkaline stable state agent, described absorptive unit is injected in described alkaline stable state agent, step (2) gained chlorine dioxide to be passed in described absorptive unit and to utilize described alkaline stable state agent fully to absorb described dioxide peroxide, obtain the dioxide peroxide stable state liquid of high density, after testing, in described dioxide peroxide stable state liquid the concentration of dioxide peroxide up to 18wt%.
Embodiment 2
The present embodiment provides a kind of production equipment of high concentration of chlorine dioxide stable state liquid, comprises reactor and absorptive unit.
The top of described reactor is communicated with liquid material input channel, the top of described reactor is communicated with first gas output tube one end for exporting chlorine dioxide, in the inside of described reactor, vertically platinum gauze is set, described reactor inner bottom part is provided with ultrasonic oscillator, and the bottom of described reactor is also communicated with the liquid discharge tube road for discharging reaction residue.Wherein, in described platinum gauze, the diameter of platinum filament is 0.08mm, and the mesh diameter of described platinum gauze is 8cm.
Described absorptive unit comprise connect setting successively the first absorption tower, second absorption tower, the 3rd absorption tower; The bottom on described first absorption tower is communicated with the other end of described first gas output tube, and the top on described first absorption tower is communicated with second gas output tube one end for exporting chlorine dioxide; The bottom of described second absorption tower is communicated with the other end of described second gas output tube, and the top of described second absorption tower is communicated with the 3rd gas output tube one end for exporting chlorine dioxide; The bottom on described 3rd absorption tower is communicated with the other end of described 3rd gas output tube; Between the bottom on described first absorption tower and the bottom of described second absorption tower, first liquid transport pipe is set, described first liquid transport pipe is provided with the first valve, arrange second liquid transport pipe between the bottom of described second absorption tower and the bottom on described 3rd absorption tower, described second liquid transport pipe is provided with the second valve.
Further, based on the production technique of the high concentration of chlorine dioxide stable state liquid of described device, comprise the following steps:
(1) add in described reactor 1596g sodium chlorate solid and 798g concentration be the vitriol oil of 94wt% as reaction raw materials, carrying out adjust ph after fully mixing is 6.5;
(2) under the effect of described platinum gauze, described sodium chlorate and the vitriol oil are fully reacted under normal temperature and pressure, Ultrasonic Conditions, generate chlorine dioxide; Reaction equation is:
2NaClO
3+H
2SO
4→2ClO
2+Na
2SO
4+H
2O
2
After testing, in above-mentioned obtained chlorine dioxide product the content of dioxide peroxide up to 98%;
Raffinate after reacting completely, after crystallisation by cooling and vacuum filtration, filtrate can be used for preparation stable state liquid and reuses, and filter cake is Na by dissolving again, crystallization, filtration post crystallization
2sO
47H
2o, is saltcake;
(3) 126g sodium hydrate solid is taken successively, 60g concentration is 30wt% hydrogen peroxide, 54g sodium carbonate solid, after carrying out fully mixing, obtained pH is that the mixing solutions of 10.5 is as alkaline stable state agent, described alkaline stable state agent is equally divided into three parts, inject described first absorption tower respectively, second absorption tower, in 3rd absorption tower, step (2) gained chlorine dioxide is passed into described first absorption tower successively, second absorption tower, in 3rd absorption tower, open described first valve and the second valve makes described first absorption tower, second absorption tower, 3rd absorption tower communicates with each other, thus utilize the alkaline stable state agent in three absorption towers fully to absorb described dioxide peroxide, the dioxide peroxide stable state liquid product of final obtained high density, after testing, in described dioxide peroxide stable state liquid, the concentration of dioxide peroxide is up to 20wt%.
Embodiment 3
The present embodiment provides a kind of production equipment of high concentration of chlorine dioxide stable state liquid, as shown in Figure 1, comprises reactor 1 and absorptive unit.
The top of described reactor 1 is communicated with liquid material input channel, the top of described reactor 1 is communicated with first gas output tube one end for exporting chlorine dioxide, in the inside of described reactor 1, platinum gauze 5 is vertically set, described reactor 1 inner bottom part is provided with ultrasonic oscillator, and the bottom of described reactor 1 is also communicated with the liquid discharge tube road for discharging reaction residue.Wherein, in described platinum gauze 5, the diameter of platinum filament is 0.1mm, and the mesh diameter of described platinum gauze 5 is 6cm.
Described absorptive unit comprise connect setting successively the first absorption tower 2, second absorption tower 3, the 3rd absorption tower 4; The bottom on described first absorption tower 2 is communicated with the other end of described first gas output tube, and the top on described first absorption tower 2 is communicated with second gas output tube one end for exporting chlorine dioxide; The bottom of described second absorption tower 3 is communicated with the other end of described second gas output tube, and the top of described second absorption tower 3 is communicated with the 3rd gas output tube one end for exporting chlorine dioxide; The bottom on described 3rd absorption tower 4 is communicated with the other end of described 3rd gas output tube; Between the bottom on described first absorption tower 2 and the bottom of described second absorption tower 3, first liquid transport pipe is set, described first liquid transport pipe is provided with the first valve 6, arrange second liquid transport pipe between the bottom of described second absorption tower 3 and the bottom on described 3rd absorption tower 4, described second liquid transport pipe is provided with the second valve 7.
Further, based on the production technique of the high concentration of chlorine dioxide stable state liquid of described device, comprise the following steps:
(1) add in described reactor 1 1064g sodium chlorate solid and 533g concentration be the vitriol oil of 93wt% as reaction raw materials, carrying out adjust ph after fully mixing is 6;
(2) under the effect of described platinum gauze 5, described sodium chlorate and the vitriol oil are fully reacted under normal temperature and pressure, Ultrasonic Conditions, generate chlorine dioxide; Reaction equation is:
2NaClO
3+H
2SO
4→2ClO
2+Na
2SO
4+H
2O
2
After testing, in above-mentioned obtained chlorine dioxide product the content of dioxide peroxide up to 99%;
Raffinate after reacting completely, after crystallisation by cooling and vacuum filtration, filtrate can be used for preparation stable state liquid and reuses, and filter cake is Na by dissolving again, crystallization, filtration post crystallization
2sO
47H
2o, is saltcake;
(3) 90g sodium hydrate solid is taken successively, 45g concentration is 30wt% hydrogen peroxide, 60g sodium carbonate solid, after carrying out fully mixing, obtained pH is that the mixing solutions of 9.5 is as alkaline stable state agent, described alkaline stable state agent is equally divided into three parts, inject the first absorption tower 2 respectively, second absorption tower 3, in 3rd absorption tower 4, step (2) gained chlorine dioxide is passed into the first absorption tower 2 successively, second absorption tower 3, in 3rd absorption tower 4, open described first valve and the second valve makes described first absorption tower, second absorption tower, 3rd absorption tower communicates with each other, thus utilize described alkaline stable state agent fully to absorb described dioxide peroxide, the dioxide peroxide stable state liquid product of final obtained high density, after testing, in described dioxide peroxide stable state liquid, the concentration of dioxide peroxide is up to 20wt%.
Embodiment 4
The present embodiment provides a kind of production equipment of high concentration of chlorine dioxide stable state liquid, comprises reactor and absorptive unit.
The top of described reactor is communicated with liquid material input channel, the top of described reactor is communicated with first gas output tube one end for exporting chlorine dioxide, in the inside of described reactor, vertically platinum gauze is set, described reactor inner bottom part is provided with ultrasonic oscillator, and the bottom of described reactor is also communicated with the liquid discharge tube road for discharging reaction residue.Wherein, in described platinum gauze, the diameter of platinum filament is 0.12mm, and the mesh diameter of described platinum gauze is 7cm.
Described absorptive unit comprise connect setting successively the first absorption tower, second absorption tower, the 3rd absorption tower; The bottom on described first absorption tower is communicated with the other end of described first gas output tube, and the top on described first absorption tower is communicated with second gas output tube one end for exporting chlorine dioxide; The bottom of described second absorption tower is communicated with the other end of described second gas output tube, and the top of described second absorption tower is communicated with the 3rd gas output tube one end for exporting chlorine dioxide; The bottom on described 3rd absorption tower is communicated with the other end of described 3rd gas output tube; Between the bottom on described first absorption tower and the bottom of described second absorption tower, first liquid transport pipe is set, described first liquid transport pipe is provided with the first valve, arrange second liquid transport pipe between the bottom of described second absorption tower and the bottom on described 3rd absorption tower, described second liquid transport pipe is provided with the second valve.
Further, based on the production technique of the high concentration of chlorine dioxide stable state liquid of described device, comprise the following steps:
(1) add in described reactor 1596g sodium chlorate solid and 798g concentration be the vitriol oil of 94wt% as reaction raw materials, carrying out adjust ph after fully mixing is 6.5;
(2) under the effect of described platinum gauze, described sodium chlorate and the vitriol oil are fully reacted under normal temperature and pressure, Ultrasonic Conditions, generate chlorine dioxide; Reaction equation is:
2NaClO
3+H
2SO
4→2ClO
2+Na
2SO
4+H
2O
2
After testing, in above-mentioned obtained chlorine dioxide product the content of dioxide peroxide up to 98.5%;
Raffinate after reacting completely, after crystallisation by cooling and vacuum filtration, filtrate can be used for preparation stable state liquid and reuses, and filter cake is Na by dissolving again, crystallization, filtration post crystallization
2sO
47H
2o, is saltcake;
(3) 126g sodium hydrate solid is taken successively, 60g concentration is 30wt% hydrogen peroxide, 90g sodium carbonate solid, after carrying out fully mixing, obtained pH is that the mixing solutions of 10 is as alkaline stable state agent, described alkaline stable state agent is equally divided into three parts, inject described first absorption tower respectively, second absorption tower, in 3rd absorption tower, step (2) gained chlorine dioxide is passed into described first absorption tower successively, second absorption tower, in 3rd absorption tower, open described first valve and the second valve makes described first absorption tower, second absorption tower, 3rd absorption tower communicates with each other, thus utilize described alkaline stable state agent fully to absorb described dioxide peroxide, the dioxide peroxide stable state liquid of final obtained high density, after testing, in described dioxide peroxide stable state liquid, the concentration of dioxide peroxide is up to 20wt%.
Embodiment 5
The present embodiment provides a kind of production equipment of high concentration of chlorine dioxide stable state liquid, comprises reactor and absorptive unit.
The top of described reactor is communicated with liquid material input channel, the top of described reactor is communicated with first gas output tube one end for exporting chlorine dioxide, in the inside of described reactor, vertically platinum gauze is set, described reactor inner bottom part is provided with ultrasonic oscillator, and the bottom of described reactor is also communicated with the liquid discharge tube road for discharging reaction residue.Wherein, in described platinum gauze, the diameter of platinum filament is 0.12mm, and the mesh diameter of described platinum gauze is 6cm.
Described absorptive unit comprise connect setting successively the first absorption tower, second absorption tower, the 3rd absorption tower; The bottom on described first absorption tower is communicated with the other end of described first gas output tube, and the top on described first absorption tower is communicated with second gas output tube one end for exporting chlorine dioxide; The bottom of described second absorption tower is communicated with the other end of described second gas output tube, and the top of described second absorption tower is communicated with the 3rd gas output tube one end for exporting chlorine dioxide; The bottom on described 3rd absorption tower is communicated with the other end of described 3rd gas output tube; Between the bottom on described first absorption tower and the bottom of described second absorption tower, first liquid transport pipe is set, described first liquid transport pipe is provided with the first valve, arrange second liquid transport pipe between the bottom of described second absorption tower and the bottom on described 3rd absorption tower, described second liquid transport pipe is provided with the second valve.
Further, based on the production technique of the high concentration of chlorine dioxide stable state liquid of described device, comprise the following steps:
(1) add in described reactor 1064g sodium chlorate solid and 533g concentration be the vitriol oil of 93wt% as reaction raw materials, carrying out adjust ph after fully mixing is 6.5;
(2) under the effect of described platinum gauze, described sodium chlorate and the vitriol oil are fully reacted under normal temperature and pressure, Ultrasonic Conditions, generate chlorine dioxide product; Reaction equation is:
2NaClO
3+H
2SO
4→2ClO
2+Na
2SO
4+H
2O
2
After testing, in above-mentioned obtained chlorine dioxide product the content of dioxide peroxide up to 98%;
Raffinate after reacting completely, after crystallisation by cooling and vacuum filtration, filtrate can be used for preparation stable state liquid and reuses, and filter cake is Na by dissolving again, crystallization, filtration post crystallization
2sO
47H
2o, is saltcake;
(3) 90g sodium hydrate solid is taken successively, 45g concentration is 30wt% hydrogen peroxide, 60g sodium carbonate solid, after carrying out fully mixing, obtained pH is that 9 mixing solutionss are as alkaline stable state agent, described alkaline stable state agent is equally divided into three parts, described first absorption tower is injected in described alkaline stable state agent respectively, second absorption tower, in 3rd absorption tower, step (2) gained chlorine dioxide is passed into described first absorption tower successively, second absorption tower, in 3rd absorption tower, open described first valve and the second valve makes described first absorption tower, second absorption tower, 3rd absorption tower communicates with each other, thus utilize described alkaline stable state agent fully to absorb described dioxide peroxide, the dioxide peroxide stable state liquid product of final obtained high density, after testing, in described dioxide peroxide stable state liquid, the concentration of dioxide peroxide is up to 19wt%.
Comparative example
This comparative example provides a kind of production equipment of dioxide peroxide stable state liquid, comprises reactor and absorptive unit.
The top of described reactor is communicated with liquid material input channel, the top of described reactor is communicated with first gas output tube one end for exporting chlorine dioxide, and the bottom of described reactor is also communicated with the liquid discharge tube road for discharging reaction residue.
Described absorptive unit comprise connect setting successively the first absorption tower, second absorption tower, the 3rd absorption tower; The bottom on described first absorption tower is communicated with the other end of described first gas output tube, and the top on described first absorption tower is communicated with second gas output tube one end for exporting chlorine dioxide; The bottom of described second absorption tower is communicated with the other end of described second gas output tube, and the top of described second absorption tower is communicated with the 3rd gas output tube one end for exporting chlorine dioxide; The bottom on described 3rd absorption tower is communicated with the other end of described 3rd gas output tube; Between the bottom on described first absorption tower and the bottom of described second absorption tower, first liquid transport pipe is set, described first liquid transport pipe is provided with the first valve, arrange second liquid transport pipe between the bottom of described second absorption tower and the bottom on described 3rd absorption tower, described second liquid transport pipe is provided with the second valve.
Further, based on the production technique of the dioxide peroxide stable state liquid of said apparatus, comprise the following steps:
(1) add in described reactor 1064g sodium chlorate solid and 533g concentration be the vitriol oil of 93wt% as reaction raw materials, carrying out adjust ph after fully mixing is 6;
(2) under 60-80 DEG C of condition, make sodium chlorate and the vitriol oil carry out reaction 50-80 minute, generate chlorine dioxide; Reaction equation is:
2NaClO
3+H
2SO
4→2ClO
2+Na
2SO
4+H
2O
2
After testing, in above-mentioned obtained chlorine dioxide product, the content of dioxide peroxide is only 48%;
(3) 90g sodium hydrate solid is taken successively, 45g concentration is 30wt% hydrogen peroxide, 60g sodium carbonate solid, after carrying out fully mixing, obtained pH is that the mixing solutions of 9.5 is as alkaline stable state agent, described alkaline stable state agent is equally divided into three parts, inject the first absorption tower respectively, second absorption tower, in 3rd absorption tower, step (2) gained chlorine dioxide is passed into the first absorption tower successively, second absorption tower, in 3rd absorption tower, open described first valve and the second valve makes described first absorption tower, second absorption tower, 3rd absorption tower communicates with each other, thus utilize described alkaline stable state agent fully to absorb dioxide peroxide, final obtained dioxide peroxide stable state liquid, after testing, in dioxide peroxide stable state liquid, the concentration of dioxide peroxide is only 8wt%.
The present invention is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; no matter but any change is done in its shape or structure; every have identical with the application or akin technical scheme, all drops within protection scope of the present invention.
Claims (10)
1. a production equipment for high concentration of chlorine dioxide stable state liquid, is characterized in that, comprises reactor and absorptive unit;
The top of described reactor is communicated with liquid material input channel, and the top of described reactor is communicated with first gas output tube one end for exporting chlorine dioxide, vertically arranges noble metal catalyst layer in the inside of described reactor;
The bottom of described absorptive unit is communicated with the other end of described first gas output tube.
2. the production equipment of high concentration of chlorine dioxide stable state liquid according to claim 1, is characterized in that, described absorptive unit comprise connect setting successively the first absorption tower, second absorption tower, the 3rd absorption tower;
The bottom on described first absorption tower is communicated with the other end of described first gas output tube, and the top on described first absorption tower is communicated with second gas output tube one end for exporting chlorine dioxide;
The bottom of described second absorption tower is communicated with the other end of described second gas output tube, and the top of described second absorption tower is communicated with the 3rd gas output tube one end for exporting chlorine dioxide;
The bottom on described 3rd absorption tower is communicated with the other end of described 3rd gas output tube.
3. the production equipment of high concentration of chlorine dioxide stable state liquid according to claim 1 and 2, is characterized in that, described reactor inner bottom part is provided with ultrasonic oscillator.
4. the production equipment of high concentration of chlorine dioxide stable state liquid according to claim 1 and 2, is characterized in that, described noble metal catalyst layer is platinum gauze, and in described platinum gauze, the diameter of platinum filament is 0.08-0.12mm, and the mesh diameter of described platinum gauze is 5-8cm.
5. the production equipment of high concentration of chlorine dioxide stable state liquid according to claim 1 and 2, is characterized in that, the bottom of described reactor is also communicated with the liquid discharge tube road for discharging reaction residue;
Between the bottom on described first absorption tower and the bottom of described second absorption tower, first liquid transport pipe is set, described first liquid transport pipe is provided with the first valve, arrange second liquid transport pipe between the bottom of described second absorption tower and the bottom on described 3rd absorption tower, described second liquid transport pipe is provided with the second valve.
6. a production technique for high concentration of chlorine dioxide stable state liquid, is characterized in that, comprises the following steps:
(1) using sodium chlorate solid and the vitriol oil as reaction raw materials, carrying out adjust ph after fully mixing is 5.5-6.5;
(2) under the effect of noble metal catalyst layer, described sodium chlorate and the vitriol oil are fully reacted under normal temperature and pressure conditions, generate chlorine dioxide;
(3) utilize alkaline stable state agent fully to absorb step (2) gained dioxide peroxide, obtain the dioxide peroxide stable state liquid of high density.
7. the production technique of high concentration of chlorine dioxide stable state liquid according to claim 6, it is characterized in that, in step (1), the concentration of the described vitriol oil is 92-94wt%, and the mass ratio of described sodium chlorate solid and the described vitriol oil is 2:(1-1.1).
8. the production technique of high concentration of chlorine dioxide stable state liquid according to claim 6, is characterized in that, in step (2), described sodium chlorate and the vitriol oil fully react under Ultrasonic Conditions.
9. the production technique of high concentration of chlorine dioxide stable state liquid according to claim 6, it is characterized in that, in step (3), described alkaline stable state agent carries out the rear obtained mixing solutions of fully mixing for adopting sodium hydrate solid, hydrogen peroxide, sodium carbonate solid according to mass ratio 2.8-3:0.4-0.5:1.8-2, and the pH of described mixing solutions is 9-10.5.
10. the production technique of high concentration of chlorine dioxide stable state liquid according to claim 6, is characterized in that, in the dioxide peroxide stable state liquid of described high density, the concentration of dioxide peroxide is up to 18-20wt%.
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| CN201510938143.1A CN105417497B (en) | 2015-12-15 | 2015-12-15 | A kind of process units and technique of high concentration of chlorine dioxide stable state liquid |
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| CN106345227A (en) * | 2016-11-09 | 2017-01-25 | 华东师范大学 | Chlorine dioxide multi-level circular absorption technology |
| CN111167278A (en) * | 2020-03-02 | 2020-05-19 | 中晶蓝实业集团有限公司 | Flue gas denitration device and method containing plasma generation equipment |
| CN112645288A (en) * | 2020-11-30 | 2021-04-13 | 湖南汉华京电清洁能源科技有限公司 | Reaction vessel for producing chlorine dioxide gas |
| CN115092890A (en) * | 2022-07-29 | 2022-09-23 | 哈尔滨工业大学（威海） | Method and device for preparing chlorine dioxide through ultrasonic-assisted catalysis |
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