CN113332830A - Special regeneration method for zeolite rotating wheel - Google Patents
Special regeneration method for zeolite rotating wheel Download PDFInfo
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- CN113332830A CN113332830A CN202110611215.7A CN202110611215A CN113332830A CN 113332830 A CN113332830 A CN 113332830A CN 202110611215 A CN202110611215 A CN 202110611215A CN 113332830 A CN113332830 A CN 113332830A
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- 238000011069 regeneration method Methods 0.000 title claims abstract description 51
- 229910021536 Zeolite Inorganic materials 0.000 title claims abstract description 46
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 239000010457 zeolite Substances 0.000 title claims abstract description 46
- 230000008929 regeneration Effects 0.000 claims abstract description 32
- 239000012530 fluid Substances 0.000 claims abstract description 28
- 239000007789 gas Substances 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 238000000605 extraction Methods 0.000 claims abstract description 14
- 239000010815 organic waste Substances 0.000 claims abstract description 14
- 238000003795 desorption Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 239000003566 sealing material Substances 0.000 claims abstract description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- MTZQAGJQAFMTAQ-UHFFFAOYSA-N ethyl benzoate Chemical compound CCOC(=O)C1=CC=CC=C1 MTZQAGJQAFMTAQ-UHFFFAOYSA-N 0.000 claims description 12
- 239000010439 graphite Substances 0.000 claims description 12
- 229910002804 graphite Inorganic materials 0.000 claims description 12
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 239000010433 feldspar Substances 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- WVDDGKGOMKODPV-ZQBYOMGUSA-N phenyl(114C)methanol Chemical compound O[14CH2]C1=CC=CC=C1 WVDDGKGOMKODPV-ZQBYOMGUSA-N 0.000 claims description 6
- 235000011118 potassium hydroxide Nutrition 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 5
- 229910052622 kaolinite Inorganic materials 0.000 claims description 5
- 238000011045 prefiltration Methods 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000012855 volatile organic compound Substances 0.000 abstract description 26
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 238000004880 explosion Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000003960 organic solvent Substances 0.000 abstract description 3
- 239000002904 solvent Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 125000004122 cyclic group Chemical group 0.000 abstract 2
- 238000011084 recovery Methods 0.000 abstract 2
- 238000004064 recycling Methods 0.000 description 5
- 238000009835 boiling Methods 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- -1 alkaline earth metal aluminosilicate Chemical class 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/40092—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot liquid
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses a special regeneration method for a zeolite rotating wheel, which comprises the following steps: selecting proper artificial zeolite, starting equipment and preparing before operation, adopting a fluid extractant to circulate through a wheel body of a rotating wheel at a high speed, introducing VOCS (volatile organic compounds) organic waste gas into a treatment device, adsorbing the organic waste gas VOCS in a concentration rotating wheel, cooling the concentration rotating wheel in a cooling area, and dissolving and extracting high-boiling-point organic matters in the wheel body by the fluid extractant to realize cleaning and regeneration of the rotating wheel. The invention has the beneficial effects that: the method has the advantages of reducing VOCS and potential safety hazards caused by pure organic solvent cleaning volatilization, reducing VOCS emission and ignition explosion risks, reducing the severe requirement and operation energy consumption of high-temperature desorption on the rotating wheel sealing material, reducing the solvent using amount of the fluid extraction agent, facilitating cyclic utilization and recovery treatment, repeating for multiple times for cyclic use, having no influence on an operation area due to centralized recovery treatment, having small pollution to a water-soluble miscible extraction system, and being capable of cleaning the extraction agent by water.
Description
Technical Field
The invention relates to the technical field of zeolite rotating wheels, in particular to a special regeneration method for a zeolite rotating wheel.
Background
The zeolite is a general name of zeolite minerals, is a framework-shaped hydrous alkali or alkaline earth metal aluminosilicate ore, and is widely applied to the fields of agriculture, animal husbandry, industry and the like by utilizing the characteristics of adsorptivity, ion exchange property, catalysis, acid resistance, heat resistance and the like of a natural zeolite filter material, particularly has a very remarkable VOCS (volatile organic compounds) adsorption effect.
Disclosure of Invention
The invention mainly aims to provide a regeneration method special for a zeolite rotating wheel, which can effectively solve the problems that accumulated polymerization is high-boiling-point viscous tar-like substances under high temperature conditions in the background technology, the pore passages of the rotating wheel are blocked, the substances cannot be removed by a conventional method, the wind resistance is increased, the operation energy consumption is increased, the service life of the rotating wheel is shortened, and the risk of ignition and smoldering is increased.
In order to achieve the purpose, the invention adopts the technical scheme that:
a regeneration method special for a zeolite rotating wheel comprises the following steps:
s1, selecting proper artificial zeolite according to the purified exhaust gas components, and adopting the artificial zeolite with different compositions to adsorb the exhaust gas;
s2, starting the equipment and preparing before operation;
s3, adopting a fluid extractant to pass through the wheel body of the rotating wheel in a high-speed circulation manner;
s4, enabling the VOCS organic waste gas to enter a treatment device, and enabling the VOCS organic waste gas to pass through a pre-filter and then a treatment area of a concentration rotating wheel device;
s5, organic waste gas VOCS absorbed in the concentration rotating wheel is desorbed and concentrated to the extent of 5-15 times in the regeneration zone through hot air treatment;
s6, the concentration runner is cooled in a cooling zone, and the air passing through the cooling zone is heated and then used as regeneration air, so that the energy-saving effect is achieved;
s7, dissolving and extracting high-boiling-point organic matters in the wheel body by using a fluid extracting agent to realize the cleaning and regeneration of the rotating wheel;
s8, drying the wheel body by hot air to restore the dry state;
and S9, the zeolite rotating wheel continues to rotate, so that the continuous operation is carried out.
Preferably, the artificial zeolite in S1 is prepared by melting one or more of sodium carbonate, caustic potash, feldspar and kaolinite.
Preferably, the desorption temperature is set in S2, and the desorption temperature is 200-220 ℃.
Preferably, the fluid extraction agent in S3 is one or more organic agents and water to form a miscible mixed solution, where the organic agent is one or a mixture of benzyl alcohol, diformate, ethyl benzoate, and dodecane.
Preferably, in the step S5, a system with a standard regeneration temperature (200-.
Preferably, the VOCS adsorbed by S5 is desorbed and flows out with the high temperature air, and the zeolite module is regenerated to restore the original adsorption efficiency.
Preferably, the fluid in S7 passes through the wheel body by water flow, so as to dissolve the extractant remaining in the wheel body.
Preferably, the hot air drying in S7 is less than 200 ℃ and not more than 300 ℃.
Preferably, the movable sealed fan-shaped fan housing is attached to two surfaces of the wheel body, and high-temperature-resistant sealing materials such as graphite are adopted on the fan housing and close to the end surface of the wheel body.
Preferably, the fan-shaped fan cover and each main unit of the pipeline are sealed by metal loose joint hoop graphite.
Compared with the prior art, the invention has the following beneficial effects:
the zeolite rotating wheel is in portable flowing operation, so that high-efficiency removal of high-boiling residues accumulated in the wheel body is realized;
the high-speed circulation of a fluid extractant is adopted to pass through the wheel body of the rotating wheel, and the cleaning and regeneration of the rotating wheel are realized by utilizing the high-speed flow of special fluid and the dissolution and extraction of high-boiling-point organic matters in the wheel body;
after the washing, the drying is carried out by hot air, so that the VOCS and potential safety hazards generated by the cleaning and volatilization of a pure organic solvent are reduced, the problems of high energy consumption and strict requirements of pure high-temperature desorption are solved, the discharge and ignition and explosion risks of the VOCS are reduced, and the strict requirements of high-temperature desorption on the sealing material of the rotating wheel and the operation energy consumption are reduced;
the fluid extractant can reduce the usage amount of the solvent, is convenient for recycling treatment, can be repeatedly recycled, has no influence on an operation area due to centralized recycling treatment, has small pollution to a water-soluble miscible extraction system, and can be washed by water.
Drawings
FIG. 1 is a schematic process flow diagram of a regeneration method special for a zeolite rotating wheel.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
The regeneration method special for the zeolite rotating wheel shown in figure 1 comprises the following steps:
s1, selecting proper artificial zeolite according to the purified exhaust gas components, and adsorbing the exhaust gas by adopting the artificial zeolite with different compositions;
s2, starting the equipment and preparing before operation;
s3, adopting a fluid extractant to pass through the wheel body of the rotating wheel in a high-speed circulation manner;
s4, enabling the VOCS organic waste gas to enter a treatment device, and enabling the VOCS organic waste gas to pass through a pre-filter and then a treatment area of a concentration rotating wheel device;
s5, organic waste gas VOCS absorbed in the concentration rotating wheel is desorbed and concentrated to the extent of 5-15 times in the regeneration zone through hot air treatment;
s6, the concentration runner is cooled in a cooling zone, and the air passing through the cooling zone is heated and then used as regeneration air, so that the energy-saving effect is achieved;
s7, dissolving and extracting high-boiling-point organic matters in the wheel body by using a fluid extracting agent to realize the cleaning and regeneration of the rotating wheel;
s8, drying the wheel body by hot air to restore the dry state;
and S9, the zeolite rotating wheel continues to rotate, so that the continuous operation is carried out.
The artificial zeolite in S1 is prepared by melting one or more of sodium carbonate, caustic potash, feldspar and kaolinite; the desorption temperature is set in S2 and is 200-220 ℃; in the S3, the fluid extraction agent adopts one or more organic reagents and water to form a mutual soluble mixed solution, wherein the organic reagents are a mixture of benzyl alcohol, diformate, ethyl benzoate and dodecane; s5, a standard regeneration temperature (200-220 ℃) system is adopted, high-temperature regeneration operation at the temperature of 280 ℃ is periodically carried out, and the time of the high-temperature regeneration operation is 24-36 hours; the VOCS adsorbed by the S5 is desorbed and flows out along with high-temperature air, and meanwhile, the zeolite module is regenerated to restore the original adsorption efficiency; s7, after the fluid passes through the wheel body, water flow is adopted to pass through the wheel body, and the residual extracting agent in the wheel body is dissolved; drying with hot air at a temperature below 200 deg.C (no more than 300 deg.C) in S7; the two surfaces of the wheel body are adhered with movable sealed fan-shaped wind shields, and the end surfaces of the wind shields close to the wheel body are made of high-temperature resistant sealing materials such as graphite; the fan-shaped fan cover and each main unit of the pipeline are sealed by adopting metal loose joint clamp graphite.
Example 2
The artificial zeolite in the S1 is prepared by mixing and melting sodium carbonate, caustic potash, feldspar and kaolinite; the desorption temperature is set in S2 and is 200 ℃; the fluid extraction agent in S3 adopts a mixture of benzyl alcohol, diformate and ethyl benzoate; s5, a system with a standard regeneration temperature of 200 ℃ is adopted, high-temperature regeneration operation at the temperature of 280 ℃ is periodically carried out, and the time of the high-temperature regeneration operation is 24 hours; the VOCS adsorbed by the S5 is desorbed and flows out along with high-temperature air, and meanwhile, the zeolite module is regenerated to restore the original adsorption efficiency; s7, after the fluid passes through the wheel body, water flow is adopted to pass through the wheel body, and the residual extracting agent in the wheel body is dissolved; s7, drying the hot air at 200 ℃; the two surfaces of the wheel body are adhered with movable sealed fan-shaped wind shields, and the end surfaces of the wind shields close to the wheel body are made of high-temperature resistant sealing materials such as graphite; the fan-shaped fan cover and each main unit of the pipeline are sealed by adopting metal loose joint clamp graphite.
Example 3
The artificial zeolite in S1 is prepared by mixing and melting sodium carbonate, caustic potash and feldspar; the desorption temperature is set in S2 and is 220 ℃; the fluid extraction agent in S3 adopts a mixture of benzyl alcohol, diformate, ethyl benzoate and dodecane; s5, a standard regeneration temperature 220 ℃ system is adopted, high-temperature regeneration operation at 280 ℃ is periodically carried out, and the time of the high-temperature regeneration operation is 30 hours; the VOCS adsorbed by the S5 is desorbed and flows out along with high-temperature air, and meanwhile, the zeolite module is regenerated to restore the original adsorption efficiency; s7, after the fluid passes through the wheel body, water flow is adopted to pass through the wheel body, and the residual extracting agent in the wheel body is dissolved; s7, drying the hot air at 200 ℃; the two surfaces of the wheel body are adhered with movable sealed fan-shaped wind shields, and the end surfaces of the wind shields close to the wheel body are made of high-temperature resistant sealing materials such as graphite; the main units of the fan-shaped fan cover and the pipeline are sealed by adopting metal loose joint clamp hoop graphite
Selecting proper artificial zeolite according to the components of the purified waste gas, adopting the artificial zeolite with different compositions to adsorb the waste gas, wherein the artificial zeolite is prepared by melting one or more of sodium carbonate, caustic potash, feldspar and kaolinite, then starting the equipment and carrying out preparation before operation, setting the desorption temperature, the desorption temperature is 200-220 ℃, adopting a fluid extractant to circularly pass through a runner wheel body at a high speed, the fluid extractant adopts one or more organic reagents and water to form a mutual solution, wherein the organic reagent is one or a mixture of benzyl alcohol, diformate, ethyl benzoate and dodecane, carrying out portable flowing operation on the zeolite runner wheel to realize the high-efficiency removal of high-boiling substances accumulated in the wheel body, allowing VOCS organic waste gas to enter a treatment device, allowing the VOCS organic waste gas to pass through a treatment area of a concentration runner device after passing through a pre-filter, the organic waste gas VOCS absorbed in the concentration rotating wheel is desorbed and concentrated to the degree of 5-15 times after being treated by hot air in a regeneration zone, a system with standard regeneration temperature regularly implements high-temperature regeneration operation at the temperature of 280 ℃, the time of the high-temperature regeneration operation is 24-36 hours, the absorbed VOCS is desorbed and flows out along with high-temperature air, a fluid extractant circulates through the wheel body of the rotating wheel at high speed, the cleaning and regeneration of the rotating wheel are realized by utilizing the high-speed flow of special fluid and the dissolution and extraction of high-boiling point organic matters in the wheel body, simultaneously, a zeolite module obtains regeneration and recovers the original adsorption efficiency, the concentration rotating wheel is cooled in a cooling zone, the air passing through the cooling zone is used as regeneration air after being heated, the energy-saving effect is achieved, the fluid extractant dissolves and extracts the high-boiling point organic matters in the wheel body to realize the cleaning and regeneration of the rotating wheel, and the wheel body is dried by hot air to recover the dry state, the method has the advantages that the potential safety hazards of VOCS (volatile organic compounds) generated by pure organic solvent cleaning volatilization are reduced, the problems of high energy consumption and strict requirements of pure high-temperature desorption are solved, the risks of emission and ignition explosion of the VOCS are reduced, the strict requirements and running energy consumption of high-temperature desorption on the rotating wheel sealing material are reduced, the zeolite rotating wheel continuously rotates so as to continuously work, the use amount of the solvent can be reduced by using the fluid extraction agent, recycling and treatment are convenient, repeated recycling and use are realized, centralized recycling and treatment do not influence an operation area, a water-based miscible extraction system is low in pollution, the extraction agent can be cleaned by water, the movable sealing fan-shaped fan cover is sealed in a pressing manner on two sides of the wheel body, the end face of the wheel body on the fan cover is provided with high-temperature-resistant sealing materials such as graphite and the wheel body, damage is avoided, the fan cover is detachably movably assembled and is conveniently carried into the wheel body maintenance shell, and the wheel body 1/4 is attached to the fan-shaped fan cover every time, 1/8, the regeneration operation of the whole wheel body is completed by several times, the auxiliary part is a temperature-resistant loose joint pipeline connecting the fan cover and each main unit, the metal loose joint hoop graphite is adopted for sealing, the length and the curvature can be adjusted at will, the use requirement on the site is met, and the defect that the rotating wheel can not be detached for high-temperature regeneration alone is overcome.
TABLE 1 Zeolite rotor regeneration method
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A special regeneration method for a zeolite rotating wheel is characterized by comprising the following steps:
s1, selecting proper artificial zeolite according to the purified exhaust gas components, and adopting the artificial zeolite with different compositions to adsorb the exhaust gas;
s2, starting the equipment and preparing before operation;
s3, adopting a fluid extractant to pass through the wheel body of the rotating wheel in a high-speed circulation manner;
s4, enabling the VOCS organic waste gas to enter a treatment device, and enabling the VOCS organic waste gas to pass through a pre-filter and then a treatment area of a concentration rotating wheel device;
s5, organic waste gas VOCS absorbed in the concentration rotating wheel is desorbed and concentrated to the extent of 5-15 times in the regeneration zone through hot air treatment;
s6, the concentration runner is cooled in a cooling zone, and the air passing through the cooling zone is heated and then used as regeneration air, so that the energy-saving effect is achieved;
s7, dissolving and extracting high-boiling-point organic matters in the wheel body by using a fluid extracting agent to realize the cleaning and regeneration of the rotating wheel;
s8, drying the wheel body by hot air to restore the dry state;
and S9, the zeolite rotating wheel continues to rotate, so that the continuous operation is carried out.
2. The regeneration method special for the zeolite rotating wheel as claimed in claim 1, wherein the artificial zeolite in S1 is prepared by melting one or more of sodium carbonate, caustic potash, feldspar and kaolinite.
3. The regeneration method as claimed in claim 1, wherein the desorption temperature is set in S2 and is 200-220 ℃.
4. The regeneration method of claim 1, wherein the fluid extraction agent in S3 is one or more organic agents and water to form a miscible mixed solution, wherein the organic agent is one or a mixture of benzyl alcohol, diformate, ethyl benzoate, and dodecane.
5. The regeneration method as claimed in claim 1, wherein the standard regeneration temperature (200-.
6. The regeneration method special for the zeolite turning wheel according to claim 1, wherein the VOCS adsorbed by S5 is desorbed and flows out with high temperature air, and the zeolite module is regenerated to restore the original adsorption efficiency.
7. The regeneration method special for the zeolite rotating wheel as claimed in claim 1, wherein the fluid in the S7 is completely passed through the wheel body by water flow, and the extractant remained in the wheel body is dissolved.
8. The regeneration method special for the zeolite rotating wheel as claimed in claim 1, wherein the drying temperature of the hot air in S7 is lower than 200 ℃ and not higher than 300 ℃.
9. The regeneration method of claim 1, wherein a movable sealing fan-shaped fan cover is attached to both surfaces of the wheel body, and a high temperature resistant sealing material such as graphite is used on the fan cover adjacent to the end surface of the wheel body.
10. The regeneration method special for the zeolite rotating wheel as claimed in claim 9, wherein the fan-shaped air hood and each main unit of the pipeline are sealed by metal loose joint hoop graphite.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116371144A (en) * | 2023-04-10 | 2023-07-04 | 苏州市环境保护有限公司 | Treatment method of zeolite rotating wheel equipment in treatment of spraying waste gas |
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| CN116371144B (en) * | 2023-04-10 | 2024-01-05 | 苏州市环境保护有限公司 | Treatment method of zeolite rotating wheel equipment in treatment of spraying waste gas |
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