CN105040335A - Cleaning device and cleaning method for kettle body in supercritical carbon dioxide dyeing equipment - Google Patents
Cleaning device and cleaning method for kettle body in supercritical carbon dioxide dyeing equipment Download PDFInfo
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- CN105040335A CN105040335A CN201510412465.2A CN201510412465A CN105040335A CN 105040335 A CN105040335 A CN 105040335A CN 201510412465 A CN201510412465 A CN 201510412465A CN 105040335 A CN105040335 A CN 105040335A
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Abstract
The invention discloses a cleaning device for a kettle body in supercritical carbon dioxide dyeing equipment. The cleaning device comprise a carbon dioxide inlet pipe, a solvent inlet pipe, a central shaft, an impeller, a cleaning concentration detecting probe, a motor, a lead screw and a heating unit; threads which are matched with each other are arranged inside the central shaft and outside the lead screw respectively; the central shaft is connected with the lead screw through the threads; the top of the lead screw is connected with the impeller through an air hole; the middle of the central shaft is connected with the motor; the carbon dioxide inlet pipe is connected with the bottom of the central shaft through a rotating joint; the solvent inlet pipe is connected with the carbon dioxide inlet pipe through a valve; the heating unit is arranged on the solvent inlet pipe. The cleaning device is simple and flexible to use, the cleaning device can be used for cleaning a dye kettle, a dyeing kettle, a separating kettle and the like, the difficult problem for cleaning critical components of a supercritical carbon dioxide dyeing device is effectively solved, and the cleaning device has a wide application prospect.
Description
Technical field
The present invention relates to a kind of cleaning device and cleaning method of supercritical CO 2 dyeing equipment, belong to textile printing and dyeing field.
Background technology
Traditional textile dyeing is main is medium with water, adds the chemical substances such as a large amount of dyestuffs, auxiliary agent and surfactant, not only cause severe contamination to environment in dye liquor, also governs the sustainable development of textile printing and dyeing industry simultaneously.Along with economic development, " 12 " period, the few water of development, energy-conservation, free of contamination staining technique become domestic and international active demand.In 20 end of the centurys, supercritical carbon dioxide waterless staining technique enjoys favor because the outstanding features such as it is pollution-free, short route, high efficiency are considered to a kind of " clean, greenization, environmental protection ".
At present along with constantly research both at home and abroad, supercritical CO 2 dyeing technology, as a kind of novel green staining technique, has all reached the comparatively ripe stage in dyeing installation, dyeing theory and dyeing.Because dyeing installation complex structure, dyeing condition are higher, dyestuff may be trapped in inner wall of kettle.If dyeing temperature is too high, dyestuff may generate polymer, is attached to inner wall of kettle securely.After dyeing terminates, these residual dyestuffs can not be removed in time, will certainly affect next Color and colour changing production.But, have no a kind of cleaning device of supercritical CO 2 dyeing kettle at present, thoroughly can solve a cleaning difficult problem for dyeing kettle.Therefore, the cleaning device system of a kind of supercritical CO 2 dyeing equipment of invention and cleaning method, be applicable to the cleaning of various kettle and system.
Summary of the invention
The present invention is directed to the problems referred to above, propose a kind of cleaning device and cleaning method of supercritical CO 2 dyeing equipment.
The cleaning device of kettle in a kind of supercritical CO 2 dyeing equipment, comprise carbon dioxide inlet duct (1), colvent inlet pipeline (2), central shaft (3), impeller (4), cleaning Concentration Testing probe (6), motor (7), leading screw (8), heating unit (9).
Wherein, central shaft (3) hollow structure that is both ends open; Described central shaft (3) inside and leading screw (8) outside are provided with the screw thread of coupling mutually; Described central shaft is connected by screw thread with leading screw; Described leading screw (8) top connects impeller (4) by pore; Described leading screw (8) is hollow structure; Described impeller (4) is hollow, double suction, open architecture; Described impeller (4) is provided with 6 blades (5); Described blade (5) is swept-back, airfoil type, hollow structure; Described blade (5) outer rim is provided with blade duct (10); Described blade duct is double-row hole, to reduce the friction of blade construction and fluid, increases kinetic energy, meets cleaning needs.
Described central shaft (3) middle part connects motor (7); Central shaft (3) can drive leading screw and impeller to do vertically and the motion that rotates in a circumferential direction when rotating.Its rotary speed is 10-500r/min, preferred 100r/min, and rising or falling speed is 0.5-5m/min, preferred 4m/min.
Described carbon dioxide inlet duct (1) connects central shaft (3) bottom by swivel joint; Described colvent inlet pipeline (2) connects carbon dioxide inlet duct (1) by valve; Described colvent inlet pipeline is provided with heating unit (9).
Described impeller top is provided with cleaning Concentration Testing probe (6).
Further, described in technique scheme, central shaft (3) is connected by gear or conveyer belt with motor (7).
Before cleaning, first will cleaning device and dyestuff still, dyeing caldron or separating still link, the carbon dioxide in gas cylinder is heated by heater, then through condenser cooling, liquefy is stored in carbon dioxide recycle tank.After cleaning starts, first carbon dioxide liquid in circulating tank is cooled by condenser, then reaches supercriticality by high-pressure pump pressurization, heat exchanger heating.After supercritical carbon dioxide fluid enters kettle, fluid enters central shaft and leading screw through carbon dioxide entrance; Cleaning solvent enters colvent inlet, and is converted into gaseous state by heating unit and fully mixes with CO 2 fluid.Actuating motor, centre axis movable wire thick stick and impeller do high speed rotary motion, and now, CO 2 fluid is sprayed to inner wall of kettle by the double duct on blade, realizes cleaning process.By regulating central shaft rotating speed, constantly increasing centrifugal force, the fluid of ejection can be improved to the impulsive force of still wall, and then improve cleaning performance.Meanwhile, at impeller central place, because fluid is ejected rear formation vacuum under the influence of centrifugal force, the fluid in carbon dioxide inlet duct is easier to be pressed into impeller, thus defines fluid and enter and the cyclic process of flowing out, and reduces energy ezpenditure.Meanwhile, while vane rotary, central shaft and leading screw carry out vertical motion by screw thread, thus fluid can be made to complete the cleaning operation of whole kettle.In addition, in the process of cleaning, the cleaning Concentration Testing probe of impeller upper end can detect cleaning state in real time, and when washing fluid concentration is less than 5%, show to reach cleaning standard, cleaning stops automatically; When fluid concentrations is greater than 5%, show that cleaning not yet completes, cleaning device can continue cleaning, until reach cleaning standard.Cleaning terminate after, in separating still, supercritical carbon dioxide fluid, cleaning solvent are separated with residual dye, after carbon dioxide gasification through condenser by pure carbon dioxide recovery in carbon dioxide holding tank.
The cleaning device of supercritical CO 2 dyeing equipment of the present invention is applicable to the cleaning of the various kettlies such as dyestuff still, dyeing caldron and separating still.
Further, in technique scheme, inlet blade angle, the angle of outlet are less than 90 °.Inlet blade angle: the tangent line of vane airfoil profile slip of import department and the angle of circumferencial direction; The angle of outlet: the tangent line of water outlet and the angle of circumferencial direction.
Every sheet blade outer rim is provided with double-row hole; Blade duct pore size is 0.5-2mm, and pitch of holes is 0.5mm.
Further, in technique scheme, described impeller upper end is provided with cleaning Concentration Testing probe, can realize the real-time detection of cleaning state.After reaching cleaning standard-required, cleaning stops automatically.
Another object of the present invention is to provide supercritical CO 2 dyeing apparatus cleaning method, and described cleaning condition is 50-100 DEG C, 10-25MPa, and automatically detect while cleaning, scavenging period is generally 20-60min.
Described cleaning process is cleaned by critical component kettle and pipe-line system cleaning forms.
Further, in technique scheme, described cleaning solvent is ethanol, methyl alcohol, water.Cleaning solvent consumption is the 0.5-5% of carbon dioxide gross mass.
After cleaning, equipment meets Chinese name republic chemical industry standard GB/T25146-2010 " industrial equipment Chemical cleaning inspection of quality specification ".After cleaning, its clean rate can reach more than 95%, and corrosion-free to equipment.
Invention beneficial effect
The cleaning device of the supercritical CO 2 dyeing equipment 1, invented and cleaning method, utilize CO 2 fluid and cleaning solvent to clean kettle, the corrosion-free damage of cleaning process, the recyclable use again of carbon dioxide, meets the demand for development of low-carbon economy;
The cleaning device of the supercritical CO 2 dyeing equipment 2, invented and cleaning method, can according to the needs of cleaning, directly cleaning device is put in kettle and cleans, simple to operation, be applicable to the cleaning process of the various kettlies such as dyestuff still, dyeing caldron and separating still;
The cleaning device of the supercritical CO 2 dyeing equipment 3, invented and cleaning method, its impeller upper end is provided with cleaning Concentration Testing probe, and can detect cleaning performance in real time, device intellectuality is higher, meets industrialization production requirements.
Accompanying drawing explanation
Accompanying drawing 4 width of the present invention,
Fig. 1 is cleaning device and kettle structure schematic diagram;
Fig. 2 is blade wheel structure schematic diagram;
Fig. 3 is impeller top view;
Fig. 4 is blade duct schematic diagram;
In figure, 1, carbon dioxide inlet duct; 2, colvent inlet pipeline; 3, central shaft; 4, impeller; 5, blade; 6, Concentration Testing probe is cleaned; 7, motor; 8, screw mandrel; 9, heating unit; 10, blade duct; 11, swivel joint; 12, valve.
Detailed description of the invention
Following non-limiting example can make the present invention of those of ordinary skill in the art's comprehend, but does not limit the present invention in any way.
Embodiment 1
As shown in Figure 1, the cleaning device of kettle in a kind of supercritical CO 2 dyeing equipment, comprises carbon dioxide inlet duct 1, colvent inlet pipeline 2, central shaft 3, impeller 4, cleaning Concentration Testing probe 6, motor 7, leading screw 8, heating unit 9.
Wherein, central shaft 3 is the hollow structure of both ends open; Central shaft 3 inside and leading screw 8 outside are provided with the screw thread of coupling mutually; Central shaft 3 is connected by screw thread with leading screw 8; Leading screw 8 top connects impeller 4 by pore, and leading screw 8 is hollow structure; As shown in Figure 2,3, impeller 4 is hollow, double suction, open architecture; Impeller 4 is provided with 6 blades 5; Blade 5 is swept-back, airfoil type, hollow structure, and as shown in Figure 4, blade 5 outer rim is provided with blade duct 10, and blade duct is double duct.
Motor 7 is connected by gear in the middle part of central shaft 3.
Carbon dioxide inlet duct 1 connects bottom central shaft 3 by swivel joint, colvent inlet pipeline 2 connects carbon dioxide inlet duct 1 by valve; Colvent inlet pipeline is provided with heating unit 9.
Impeller top is provided with cleaning Concentration Testing probe 6.
By reference to the accompanying drawings 1, describe the cleaning device of supercritical CO 2 dyeing equipment of the present invention and the detailed description of the invention of cleaning method in detail, its workflow is as follows:
Before cleaning, first will the impeller connecting leading screw is put in dyestuff still, the screw mandrel in cleaning device be connected with kettle outside hub axle by rotating.Carbon dioxide in gas cylinder is heated by heater, then through condenser cooling, liquefy is stored in carbon dioxide recycle tank.
Cleaning starts, and first carbon dioxide liquid in carbon dioxide holding tank is cooled by condenser, then is pressurized to 18MPa by high-pressure pump, and be then heated to 70 DEG C through heat exchanger, at this moment carbon dioxide is supercriticality.After supercritical carbon dioxide fluid enters kettle, fluid enters central shaft, leading screw, impeller successively through carbon dioxide inlet duct; Cleaning solvent enters colvent inlet, and is converted into gaseous state by heating unit and fully mixes with CO 2 fluid.Actuating motor, centre axis movable wire thick stick, impeller and fluid do high speed rotary motion, and now, CO 2 fluid sprays the inner wall of kettle to dyestuff still by the blade duct on blade, realizes cleaning process.By regulating central shaft rotating speed, constantly increasing centrifugal force, the fluid of ejection can be improved to the impulsive force of still wall, and then improve cleaning performance.Meanwhile, at impeller central place, because fluid is ejected rear formation vacuum under the influence of centrifugal force, the fluid in carbon dioxide inlet duct is easier to be pressed into impeller, thus defines fluid and enter and the cyclic process of flowing out, and reduces energy ezpenditure.Meanwhile, while vane rotary, central shaft impeller under leading screw effect carries out vertical motion, thus fluid can be made to complete the cleaning operation of whole kettle.At this moment clean path and comprise key device clean cycle and pipe-line system global cycle.In the process of cleaning, the cleaning Concentration Testing probe of impeller upper end can detect cleaning state in real time, and when washing fluid concentration is less than 5%, show to reach cleaning standard, cleaning stops automatically; When fluid concentrations is greater than 5%, show that cleaning not yet completes, cleaning device can continue cleaning, until reach cleaning standard.
After cleaning terminates, the supercritical carbon dioxide fluid completing cleaning is decompressed to 3-3.3MPa, after heat exchanger is cooled to 30-35 DEG C, in separating still, supercritical carbon dioxide fluid, cleaning solvent are separated with residual dye, after carbon dioxide gasification through condenser by pure carbon dioxide recovery in carbon dioxide holding tank.
Embodiment 2
Describe the cleaning device of supercritical CO 2 dyeing equipment of the present invention and the detailed description of the invention of cleaning method in detail, its workflow is as follows:
Before cleaning, first will cleaning device is put in dyeing caldron, the carbon dioxide in gas cylinder be heated by heater, then through condenser cooling, liquefy is stored in carbon dioxide recycle tank.
Cleaning starts, and first carbon dioxide liquid in circulating tank is cooled by condenser, then is pressurized to 20MPa by high-pressure pump, and be then heated to 90 DEG C through heat exchanger, at this moment carbon dioxide is supercriticality.After supercritical carbon dioxide fluid enters kettle, fluid enters central shaft, screw mandrel, impeller successively through carbon dioxide inlet duct; Cleaning solvent enters colvent inlet, and is converted into gaseous state by heating unit and fully mixes with CO 2 fluid.Actuating motor, centre axis movable wire thick stick, impeller and fluid do high speed rotary motion, and now, CO 2 fluid sprays the inner wall of kettle to dyeing caldron by the double duct on blade, realizes cleaning process.By regulating central shaft rotating speed, constantly increasing centrifugal force, the fluid of ejection can be improved to the impulsive force of still wall, and then improve cleaning performance.Meanwhile, at impeller central place, because fluid is ejected rear formation vacuum under the influence of centrifugal force, the fluid in carbon dioxide inlet duct is easier to be pressed into impeller, thus defines fluid and enter and the cyclic process of flowing out, and reduces energy ezpenditure.Meanwhile, while vane rotary, leading screw impeller under the effect of central shaft carries out vertical motion, thus fluid can be made to complete the cleaning operation of whole kettle.At this moment clean path and comprise key device clean cycle and pipe-line system global cycle.In the process of cleaning, the cleaning Concentration Testing probe of impeller upper end can detect cleaning state in real time, and when washing fluid concentration is less than 5%, show to reach cleaning standard, cleaning stops automatically; When fluid concentrations is greater than 5%, show that cleaning not yet completes, cleaning device can continue cleaning, until reach cleaning standard.
After cleaning terminates, the supercritical carbon dioxide fluid completing cleaning is decompressed to 3.1-3.5MPa, after heat exchanger is cooled to 33-34 DEG C, in separating still, supercritical carbon dioxide fluid, cleaning solvent are separated with residual dye, after carbon dioxide gasification through condenser by pure carbon dioxide recovery in carbon dioxide holding tank.
Claims (7)
1. the cleaning device of kettle in a supercritical CO 2 dyeing equipment, it is characterized in that: comprise carbon dioxide inlet duct (1), colvent inlet pipeline (2), central shaft (3), impeller (4), cleaning Concentration Testing probe (6), motor (7), leading screw (8), heating unit (9);
Wherein, central shaft (3) hollow structure that is both ends open; Described central shaft (3) inside and leading screw (8) outside are provided with the screw thread of coupling mutually; Described central shaft is connected by screw thread with leading screw; Described leading screw (8) top connects impeller (4) by pore; Described leading screw (8) is hollow structure; Described impeller (4) is hollow, double suction, open architecture; Described impeller (4) is provided with 6 blades (5); Described blade (5) is swept-back, airfoil type, hollow structure; Described blade (5) outer rim is provided with blade duct (10), and described blade duct is double-row hole;
Described central shaft (3) middle part connects motor (7);
Carbon dioxide inlet duct (1) connects central shaft (3) bottom by swivel joint, described colvent inlet pipeline (2) connects carbon dioxide inlet duct (1) by valve; Described colvent inlet pipeline is provided with heating unit (9);
Described impeller top is provided with cleaning Concentration Testing probe (6).
2. cleaning device according to claim 1, it is characterized in that: central shaft rotary speed is 10-500r/min, impeller rising or falling speed is 0.5-5m/min.
3. cleaning device according to claim 1, is characterized in that: inlet blade angle, the angle of outlet are less than 90 °; Blade duct pore size is 0.5-2mm, and pitch of holes is 0.5mm.
4. to utilize described in claim 1-3 cleaning device cleaning dyestuff still or dyeing caldron or separating still.
5. cleaning device cleans the method for kettle according to claim 4, it is characterized in that: cleaning condition is 50-100 DEG C, 10-25MPa, and clean Concentration Testing probe (6) while cleaning and automatically detect, scavenging period is 20-60min.
6. cleaning method according to claim 5, is characterized in that: described cleaning solvent is ethanol, methyl alcohol, water.
7. cleaning method according to claim 6, is characterized in that: cleaning solvent consumption is the 0.5-5% of carbon dioxide gross mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510412465.2A CN105040335B (en) | 2015-07-14 | 2015-07-14 | Cleaning device and cleaning method for kettle body in supercritical carbon dioxide dyeing equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510412465.2A CN105040335B (en) | 2015-07-14 | 2015-07-14 | Cleaning device and cleaning method for kettle body in supercritical carbon dioxide dyeing equipment |
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| CN105040335A true CN105040335A (en) | 2015-11-11 |
| CN105040335B CN105040335B (en) | 2017-04-26 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5417768A (en) * | 1993-12-14 | 1995-05-23 | Autoclave Engineers, Inc. | Method of cleaning workpiece with solvent and then with liquid carbon dioxide |
| CN102787463A (en) * | 2012-07-17 | 2012-11-21 | 大连工业大学 | Cleaning method for supercritical carbon dioxide dyeing equipment |
| CN103357338A (en) * | 2013-07-24 | 2013-10-23 | 浙江工业大学 | Electric mixer |
| CN204238024U (en) * | 2014-11-05 | 2015-04-01 | 绍兴永利环保科技有限公司 | The cylinder body high-efficiency washing device of airflow dyeing machine |
-
2015
- 2015-07-14 CN CN201510412465.2A patent/CN105040335B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5417768A (en) * | 1993-12-14 | 1995-05-23 | Autoclave Engineers, Inc. | Method of cleaning workpiece with solvent and then with liquid carbon dioxide |
| CN102787463A (en) * | 2012-07-17 | 2012-11-21 | 大连工业大学 | Cleaning method for supercritical carbon dioxide dyeing equipment |
| CN103357338A (en) * | 2013-07-24 | 2013-10-23 | 浙江工业大学 | Electric mixer |
| CN204238024U (en) * | 2014-11-05 | 2015-04-01 | 绍兴永利环保科技有限公司 | The cylinder body high-efficiency washing device of airflow dyeing machine |
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| CN105040335B (en) | 2017-04-26 |
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