CN103007684B - Promote and reclaim the organic solvent recovery device of quality, method and purposes - Google Patents
Promote and reclaim the organic solvent recovery device of quality, method and purposes Download PDFInfo
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- CN103007684B CN103007684B CN201110279454.3A CN201110279454A CN103007684B CN 103007684 B CN103007684 B CN 103007684B CN 201110279454 A CN201110279454 A CN 201110279454A CN 103007684 B CN103007684 B CN 103007684B
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- 238000011084 recovery Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000003960 organic solvent Substances 0.000 title claims abstract description 15
- 238000003795 desorption Methods 0.000 claims abstract description 140
- 239000007789 gas Substances 0.000 claims abstract description 91
- 238000001179 sorption measurement Methods 0.000 claims abstract description 80
- 239000000463 material Substances 0.000 claims abstract description 58
- 239000001301 oxygen Substances 0.000 claims abstract description 39
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 39
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000009833 condensation Methods 0.000 claims abstract description 13
- 230000005494 condensation Effects 0.000 claims abstract description 13
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 49
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 37
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 11
- 239000002912 waste gas Substances 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 6
- QSJXEFYPDANLFS-UHFFFAOYSA-N Diacetyl Chemical group CC(=O)C(C)=O QSJXEFYPDANLFS-UHFFFAOYSA-N 0.000 claims description 5
- 230000020477 pH reduction Effects 0.000 claims description 5
- 230000001737 promoting effect Effects 0.000 claims description 4
- 238000010931 ester hydrolysis Methods 0.000 claims 1
- 150000002148 esters Chemical class 0.000 claims 1
- 239000002904 solvent Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000746 purification Methods 0.000 description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- AXPZIVKEZRHGAS-UHFFFAOYSA-N 3-benzyl-5-[(2-nitrophenoxy)methyl]oxolan-2-one Chemical compound [O-][N+](=O)C1=CC=CC=C1OCC1OC(=O)C(CC=2C=CC=CC=2)C1 AXPZIVKEZRHGAS-UHFFFAOYSA-N 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 150000002926 oxygen Chemical class 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 210000001364 upper extremity Anatomy 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000002649 leather substitute Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Abstract
A kind of lifting reclaims the organic solvent recovery device of quality, method and purposes, and its recovery method includes: an adsorption process, utilizes adsorption material to be adsorbed by organic exhaust gas；One desorption program, the organic exhaust gas utilizing desorption air-flow adsorption material to be adsorbed is desorbed out；One oxygen content controls program, and after making desorption process or desorption, the oxygen content of air-flow maintains less than 1.5%, and more preferably less than 0.5%；And a condensation reclaimer, recovery will be condensed by high concentration organic gas contained in air-flow after desorption.The present invention has the oxygen content of control desorption process and promotes effect of solvent recovery quality.
Description
Technical field
The present invention relates to a kind of desorption program carrying out organic solvent under conditions of low oxygen content, and then oxygen is greatly reduced
Change reaction for the design of organic solvent degradation, particularly to a kind of promote reclaim quality organic solvent recovery device,
Method and purposes.
Background technology
Utilize the adsorption material of high porosity, high-specific surface area, remove volatile organic gas by adsorption
The adsorption and purification technology of (Volatile Organic Compounds, VOCs), fluidized floating bed purification system as shown in Figure 1
System, common are machine waste gas cleaning system for one, and it sends into adsorption tower 10 with exhaust gas fan 14 from organic exhaust gas entrance 13
Bottom, and after organic exhaust gas borrows air-flow dispersion plate 12 to disperse, contact with the adsorption material 30 fallen from above, purification gas can be become
And discharge from the purified gas outlet 15 of tower top；Wherein, the inside of adsorption tower 10 is separated into several layers with porous plate ¨, adsorption material 30
Fallen by the top of adsorption tower 10, and above porous plate 11, form float layer, and along porous plate 11 opening in layer
Mouth side falls, and when adsorption material 30 is with when contacting containing organic exhaust gas, the organic gas in waste gas is adsorbed in the hole of adsorption material 30
In hole, waste gas i.e. becomes purification gas discharge；But, adsorb saturated adsorption material 30 and drop down onto the storage tank 16 bottom adsorption tower 10
After, deliver to follow-up desorption column 40 top by means of supply unit 20, after carrying out desorption and regeneration work, send the top of adsorption tower 10 back to.
Then, adsorption material 30 to be regenerated is at desorption column 40 slowly flow down, and this desorption column 40 includes: overflow part
41, desorption heating part 43, cooling end 44 and a storage tank portion 45；Then, the adsorption material 30 fallen from top is through overflow part 41 again
Drop down onto desorption heating part 43, and make a desorption source of the gas 60 connect with adsorption material 30 from bottom input desorption gas (usually nitrogen)
Touching, the organic gas desorption that will be adsorbed in adsorption material 30, desorption high concentration organic gas out is led to condensing tower 50
Condensation is reclaimed, and the adsorption material 30 after desorption then drops down onto storage tank portion 45 after cooling end 44 cools down；Furthermore, still may be in this overflow part
It is provided with desorption gas purification portion 42 between 41 and this desorption heating part 43, and it is pure in this to guide condensed low temperature desorption gas
After changing (organic gas that absorption is remaining), it is recycled back into bottom this desorption column 40.
Furthermore, it is a thermodynamic (al) favourable reaction that butanone (MEK) changes into diacetyl (BDO), say, that at air and
Under the conditions of uniform temperature, butanone will have denier and change into diacetyl, and the calculating generating heat according to molecule can obtain its reaction
Heat is-10.6kcal/mol, and this reaction heat is considered as Δ G, then according to equation
MEK+O2--＞ 2,3-BDO+H2O
Such as: Δ G=-RTl nK calculate the equilibrium constant K under the conditions of 110 DEG C (373K) average desorption temperature=
1.103, then bring K=[2,3-BDO] * [H into2O]/([MEK]*[O2]) ([H in equation2O]=1, [MEK]=4000ppm,
[O2]=21%) solve [2,3-BDO]=0.093%.Therefore, minimizing 2 from the point of view of thermodynamic consideration, the direction that 3-BDO generates,
System oxygen content can be reduced or reduce MEK remaining quantity and reduce desorption temperature, but both seem to have conflicted afterwards.
But, this desorption source of the gas 60 inputs the desorption gas of this desorption column 40, except in order to will be adsorbed in adsorption material 30
Organic gas be desorbed out outside, also can reduce this oxygen content within desorption column 40, to guarantee the operation of this desorption column 40
Safety, and this is normally controlled in 2.5～about 5% about the oxygen content of safety；But, if the organic gas being desorbed out
Body has and is recycled into the interests that solvent re-uses, may for consideration institute recovered solvent in the oxygen content with safety
Can be gone bad (such as: butanone (MEK) can aoxidize and be acidified, ethyl acetate (EAC) can hydrolyze and be acidified), thus reduces recycling design
Purity, pH value and recycle value, and further result in degree of difficulty and the cost of recycling design purification.
Summary of the invention
Technical problem underlying to be solved by this invention is, overcomes the drawbacks described above that prior art exists, and provides one
Planting to promote and reclaim the organic solvent recovery device of quality, method and purposes, it has the oxygen content of control desorption process and promotes
Effect of solvent recovery quality.
The present invention promotes the organic solvent recovery device of recovery quality:
The architectural feature of retracting device of the present invention, includes: an adsorption tower, and bottom arranges organic exhaust gas entrance, and top sets
It is equipped with purified gas outlet, internal be separated into several layers with several porous plates and be formed with storage tank in bottom, allow being fallen by top
Adsorption material forms float layer above respectively this porous plate, and drops down onto this storage tank along respectively this porous plate open side in layer,
And the organic gas in waste gas is adsorbed in the hole of adsorption material；One desorption column, inside is the most at least distinguished overflow
Portion, desorption heating part, cooling end and storage tank portion, and allow the adsorption material fallen from top drop down onto the heating of this desorption again through this overflow part
Portion, and make one to be linked to the desorption airflow inlet tube being desorbed source of the gas and contact with adsorption material from bottom input desorption gas, will absorption
The organic gas desorption adsorbed in material, the adsorption material after desorption then drops down onto this storage tank portion after this cooling end cools down；One conveying
Unit, is delivered to the adsorption material dropping down onto this adsorption tower storage tank this desorption column top, and will drop down onto the suction in this desorption column storage tank portion
Attached material is delivered to this adsorption tower top；One condensing tower, links with this desorption column with air-flow guide wire after a desorption, and after being desorbed
High concentration organic gas contained in air-flow is condensed recovery, separately inputs with this desorption air-flow with air-flow guide wire after a condensation
Pipe links；And an oxygen content control unit, with the oxygen content of air-flow after a detector detecting desorption, and connect with a controller
This detector and this desorption source of the gas, and after making desorption process or desorption, the oxygen content of air-flow maintains less than 1.5%, is more preferably
Less than 0.5%.
Additionally, be provided with the wet unit of control further in this organic exhaust gas porch.Also, take off with this in this overflow part further
It is provided with purification for gas portion after desorption between additional heat portion, and air-flow guide wire is segmented into the section of leading back to and leads back after making this condensation
Section, this section of leading back to links purification for gas subordinate's edge and this condenser after this desorption, and this section of leading back links purification for gas after this desorption
Portion's upper limb and this desorption airflow inlet tube.Separately, after this detector is arranged at this desorption, after maybe this condensation of air-flow guide wire, air-flow is led
The section of leading back of skirt.Furthermore, this desorption source of the gas provides the nitrogen of 99.9%.
Another person, the recovery method of the present invention, include: an adsorption process, utilize adsorption material to be adsorbed by organic exhaust gas；
One desorption program, the organic exhaust gas utilizing desorption air-flow adsorption material to be adsorbed is desorbed out；One oxygen content controls program,
After making desorption process or desorption, the oxygen content of air-flow maintains less than 1.5%, and more preferably less than 0.5%；And one condensation reclaim
Program, is condensed recovery by contained high concentration organic gas in air-flow after desorption.Wherein, this oxygen content controls program provides
The nitrogen of 99.9% is as desorption air-flow.
Another, the present invention uses the organic solvent recovery device promoting recovery quality to carry out reclaiming the purposes of butanone, is profit
Being adsorbed by butanone contained in organic exhaust gas by adsorption material, the butanone that adsorption material is adsorbed by recycling desorption air-flow gives
Out, and the oxygen content of air-flow maintains less than 1.5% to desorption after making desorption process or desorption, and more preferably less than 0.5%, it is to avoid
Butanone carries out because oxygen content is high being oxidized to diacetyl and acidification phenomenon occurring, by high concentration butanone contained in air-flow after desorption
Condensed recovery.
Further, the present invention uses the organic solvent recovery device promoting recovery quality to carry out reclaiming the purposes of ethyl acetate,
Being to utilize adsorption material ethyl acetate contained in organic exhaust gas to be adsorbed, adsorption material is adsorbed by recycling desorption air-flow
Ethyl acetate is desorbed out, and the oxygen content of air-flow maintains less than 1.5% after making desorption process or desorption, is more preferably
Less than 0.5%, it is to avoid ethyl acetate causes hydrolysis of ethyl acetate reaction sour with generation for acetic acid because aoxidizing the aqueous vapor derived
Change phenomenon, contained high-concentration acetic acid ethyl ester in air-flow after desorption is condensed recovery.Wherein, in carrying out institute in organic exhaust gas
Before adsorption process containing ethyl acetate, first pending organic exhaust gas is controlled wet, and by the relative humidity control of organic exhaust gas
It is formed on below 60%RH, more preferably below 45%RH.
The invention has the beneficial effects as follows, it has the oxygen content of control desorption process and promotes the merit of solvent recovery quality
Effect.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of existing organic solvent recovery device.
Fig. 2 is the structural representation of the present invention.
Label declaration in figure:
10 adsorption towers
11 porous plates
12 air-flow dispersion plates
13 organic exhaust gas entrances
14 exhaust gas fans
15 purified gas outlet
16 storage tanks
20 conveyer devices
30 adsorption material
40 desorption column
41 overflow part
42 desorption gas purification portions
43 desorption heating parts
44 cooling ends
45 storage tank portions
50 condensing towers
Air-flow guide wire after 51 desorptions
Air-flow guide wire after 52 condensations
521 sections of leading back to
522 sections of leading back
60 desorption sources of the gas
61 desorption airflow inlet tube
70 oxygen content control units
71 detectors
72 controllers
80 control wet unit
Detailed description of the invention
First, referring to shown in Fig. 2, the retracting device of the present invention includes:
One adsorption tower 10, bottom arranges organic exhaust gas entrance 13, and this organic exhaust gas entrance 13 can be further provided with controlling wet
Unit 80 (being controlled in below 60%RH in order to the relative humidity of the waste gas by entering adsorption tower 10, more preferably below 45%RH),
Top is provided with purified gas outlet 15, and inside is separated into several layers with porous plate 11 and is formed with storage tank 16 in bottom, and it is with useless
Gas blower fan 14 sends into the bottom of adsorption tower 10 from organic exhaust gas entrance 13, and after organic exhaust gas borrows air-flow dispersion plate 12 to disperse, allows
The adsorption material 30 fallen by top forms float layer above respectively this porous plate 11, and along respectively 11 layers of one layer opens of this porous plate
Mouth side drops down onto this storage tank 16, and is adsorbed in the hole of adsorption material 30 by the organic gas in waste gas.
One desorption column 40, inside is the most at least distinguished overflow part 41, desorption heating part 43, cooling end 44 and storage tank
Portion 45, and purification for gas portion 42 after desorption can be provided with further between this overflow part 41 and this desorption heating part 43；And allow
The adsorption material 30 fallen from top drops down onto desorption heating part 43 again through overflow part 41, and makes one to be linked to provide 99.9% nitrogen
The desorption airflow inlet tube 61 of desorption source of the gas 60 contacts with adsorption material 30 from bottom input desorption gas, will be inhaled in adsorption material 30
Attached organic gas desorption, the adsorption material 30 after desorption then drops down onto storage tank portion 45 after cooling end 44 cools down.
One supply unit 20, is delivered to this desorption column 40 top by the adsorption material 30 dropping down onto this adsorption tower 10 storage tank 16, and
The adsorption material 30 dropping down onto this desorption column 40 storage tank portion 45 is delivered to this adsorption tower 10 top.
One condensing tower 50, links with this desorption column 40 with air-flow guide wire 51 after a desorption, and by institute in air-flow after desorption
The high concentration organic gas contained is condensed recovery, separately with air-flow guide wire 52 after a condensation with this desorption airflow inlet tube 61 even
Knot；And after making this condensation, air-flow guide wire 52 is segmented into the section of leading back to 521 and the section of leading back 522, after this section of leading back to 521 links this desorption
Purification for gas portion 42 lower edge and this condenser 50, this section of leading back 522 links purification for gas portion 42 upper limb and this desorption after this desorption
Airflow inlet tube 61, and guide air-flow purification for gas portion 42 purification (organic gas that absorption is remaining) after this desorption after condensation
After, return this desorption airflow inlet tube 61 circulation desorption.
One oxygen content control unit 70, with the oxygen content of air-flow after a detector 71 detecting desorption, this detector 71 can set
It is placed in after this desorption the section of leading back 522 of air-flow guide wire 52 after air-flow guide wire 51 maybe this condensation, and connects with a controller 72
This detector 71 and this desorption source of the gas 60, and after making desorption, the oxygen content of air-flow maintains less than 1.5%, more preferably 0.5% with
Under.
Based on above-mentioned composition, after the present invention utilizes this oxygen content control unit 70 order desorption, the oxygen content of air-flow maintains
Less than 1.5%, more preferably less than 0.5%, under conditions of low oxygen content, carry out the desorption program of organic solvent, oxygen is greatly reduced
Change the reaction degree for organic solvent deterioration, such as, be applied to PU making synthetic leather and make the dry type coating process of industry, fourth can be avoided
Ketone (MEK) carries out because oxygen content is high being oxidized to diacetyl (BDO) and acidification phenomenon occurring, or can avoid ethyl acetate
(EAC) aqueous vapor derived because of oxidation reaction, with the aqueous vapor of adsorption material internal adsorption, and causes ethyl acetate to produce hydrolysis
For acetic acid and generation acidification phenomenon；Control the oxygen content of desorption process therefore have and promote effect of solvent recovery quality.
The present invention implements comparative example<>: source air quantity 300NCMM& waste gas components toluene (1000ppmv), butanone
(2000ppmv)
The present invention implements comparative example<two>: source air quantity 300NCMM& waste gas components toluene (1000ppmv), butanone
(2000ppmv), ethyl acetate (500ppmv)
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any pro forma restriction, all
It is based on any simple modification, equivalent variations and modification that above example is made by the technical spirit of the present invention, all still falls within
In the range of technical solution of the present invention.
In sum, the present invention designs in structure, uses in practicality and cost benefit, complies fully with industry development institute
Need, and disclosed structure is also to have unprecedented innovative structure, has novelty, creativeness, practicality, meets relevant
The regulation of patent of invention important document, therefore mention application in accordance with the law.
Claims (2)
1. using the organic solvent recovery device promoting recovery quality to carry out reclaiming a purposes for butanone, described device includes:
One adsorption tower, bottom arranges organic exhaust gas entrance, and top is provided with purified gas outlet, and inside separates with several porous plates
Become several layers and be formed with storage tank in bottom, allowing the adsorption material fallen by top form float layer, and edge above respectively this porous plate
Respectively this porous plate open side in layer and drop down onto this storage tank, and the organic gas in waste gas is adsorbed in the hole of adsorption material
In；
One controls wet unit, is arranged at this organic exhaust gas porch, and the relative humidity of organic exhaust gas is controlled in below 60%RH；
One desorption column, inside is the most at least distinguished overflow part, desorption heating part, cooling end and storage tank portion, and allows from top
The adsorption material that end falls drops down onto this desorption heating part again through this overflow part, and makes a desorption air-flow input being linked to be desorbed source of the gas
Pipe contacts with adsorption material from bottom input desorption gas, the organic gas desorption that will be adsorbed in adsorption material, the absorption after desorption
Material then drops down onto this storage tank portion after this cooling end cools down；
One supply unit, is delivered to the adsorption material dropping down onto this adsorption tower storage tank this desorption column top, and will drop down onto this desorption column
The adsorption material in storage tank portion is delivered to this adsorption tower top；
One condensing tower, links with this desorption column with air-flow guide wire after a desorption, and by high concentration contained in air-flow after desorption
Organic gas is condensed recovery, separately links with this desorption airflow inlet tube with air-flow guide wire after a condensation；
One oxygen content control unit, with the oxygen content of air-flow after a detector detecting desorption, and connects this detecting with a controller
Device and this desorption source of the gas, and after making desorption process or desorption, the oxygen content of air-flow maintains less than 0.5%, it is characterised in that
The relative humidity of organic exhaust gas is controlled in below 45%RH, and utilizes adsorption material to be given by butanone contained in organic exhaust gas
With absorption, the butanone that adsorption material is adsorbed by recycling desorption air-flow is desorbed out, and is made gas after desorption process or desorption
The oxygen content of stream maintains less than 0.5%, it is to avoid butanone carries out because oxygen content is high being oxidized to diacetyl and acidification phenomenon occurring,
Contained high concentration butanone in air-flow after desorption is condensed recovery.
2. use the organic solvent recovery device promoting recovery quality to carry out reclaiming a purposes for ethyl acetate, described device bag
Include:
One adsorption tower, bottom arranges organic exhaust gas entrance, and top is provided with purified gas outlet, and inside separates with several porous plates
Become several layers and be formed with storage tank in bottom, allowing the adsorption material fallen by top form float layer, and edge above respectively this porous plate
Respectively this porous plate open side in layer and drop down onto this storage tank, and the organic gas in waste gas is adsorbed in the hole of adsorption material
In；
One controls wet unit, is arranged at this organic exhaust gas porch, and the relative humidity of organic exhaust gas is controlled in below 60%RH；
One desorption column, inside is the most at least distinguished overflow part, desorption heating part, cooling end and storage tank portion, and allows from top
The adsorption material that end falls drops down onto this desorption heating part again through this overflow part, and makes a desorption air-flow input being linked to be desorbed source of the gas
Pipe contacts with adsorption material from bottom input desorption gas, the organic gas desorption that will be adsorbed in adsorption material, the absorption after desorption
Material then drops down onto this storage tank portion after this cooling end cools down；
One supply unit, is delivered to the adsorption material dropping down onto this adsorption tower storage tank this desorption column top, and will drop down onto this desorption column
The adsorption material in storage tank portion is delivered to this adsorption tower top；
One condensing tower, links with this desorption column with air-flow guide wire after a desorption, and by high concentration contained in air-flow after desorption
Organic gas is condensed recovery, separately links with this desorption airflow inlet tube with air-flow guide wire after a condensation；
One oxygen content control unit, with the oxygen content of air-flow after a detector detecting desorption, and connects this detecting with a controller
Device and this desorption source of the gas, and after making desorption process or desorption, the oxygen content of air-flow maintains less than 0.5%, it is characterised in that
The relative humidity of organic exhaust gas is controlled in below 45%RH, and utilizes adsorption material by acetic acid second contained in organic exhaust gas
Ester is adsorbed, and the recycling desorption ethyl acetate adsorption material adsorbed of air-flow is desorbed out, and make desorption process or
After desorption, the oxygen content of air-flow maintains less than 0.5%, it is to avoid ethyl acetate causes acetic acid second because aoxidizing the aqueous vapor derived
Ester hydrolysis reaction is acetic acid and generation acidification phenomenon, and after being desorbed, in air-flow, contained high-concentration acetic acid ethyl ester is condensed back
Receive.
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| CN104801151A (en) * | 2014-01-27 | 2015-07-29 | 承源环境科技企业有限公司 | Fluidized floating bed capable of stabilizing wind amount |
| CN106693610B (en) * | 2015-07-14 | 2019-10-29 | 杰智环境科技股份有限公司 | Save the desorption apparatus and fluidized bed continous way adsorption desorption system of absorption grain dosage |
| CN106902617A (en) * | 2017-03-17 | 2017-06-30 | 河北科技大学 | A kind of high concentration VOC air purifying recovering apparatus and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWM397284U (en) * | 2010-07-20 | 2011-02-01 | Lin Yi Cheng | Organic solvent filtration device at room temperature process |
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| US6451210B1 (en) * | 2000-11-20 | 2002-09-17 | General Electric Company | Method and system to remotely monitor a carbon adsorption process |
| CN101306293A (en) * | 2007-11-05 | 2008-11-19 | 山东洪业化工集团有限公司 | End gas treating method of cyclohexanone production system |
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