CN111686683A - Sulfur-containing malodorous gas adsorbent and preparation method thereof - Google Patents
Sulfur-containing malodorous gas adsorbent and preparation method thereof Download PDFInfo
- Publication number
- CN111686683A CN111686683A CN202010562992.2A CN202010562992A CN111686683A CN 111686683 A CN111686683 A CN 111686683A CN 202010562992 A CN202010562992 A CN 202010562992A CN 111686683 A CN111686683 A CN 111686683A
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- Prior art keywords
- sulfur
- malodorous gas
- molecular sieve
- pug
- adsorbent
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000011593 sulfur Substances 0.000 title claims abstract description 31
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 31
- 239000003463 adsorbent Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title abstract description 5
- 239000002808 molecular sieve Substances 0.000 claims abstract description 23
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 7
- 239000011230 binding agent Substances 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000001125 extrusion Methods 0.000 claims abstract description 6
- 238000004898 kneading Methods 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000008367 deionised water Substances 0.000 claims abstract description 5
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 5
- 235000012211 aluminium silicate Nutrition 0.000 claims description 5
- 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
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 3
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 2
- 239000000440 bentonite Substances 0.000 claims description 2
- 229910000278 bentonite Inorganic materials 0.000 claims description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 2
- 229920003063 hydroxymethyl cellulose Polymers 0.000 claims description 2
- 229940031574 hydroxymethyl cellulose Drugs 0.000 claims description 2
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 244000275012 Sesbania cannabina Species 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 27
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 9
- 239000003546 flue gas Substances 0.000 abstract description 9
- 238000001179 sorption measurement Methods 0.000 abstract description 6
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000000945 filler Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 8
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- 239000003245 coal Substances 0.000 description 6
- 239000003034 coal gas Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 241000219782 Sesbania Species 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VDZOOKBUILJEDG-UHFFFAOYSA-M tetrabutylammonium hydroxide Chemical compound [OH-].CCCC[N+](CCCC)(CCCC)CCCC VDZOOKBUILJEDG-UHFFFAOYSA-M 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
- B01J20/183—Physical conditioning without chemical treatment, e.g. drying, granulating, coating, irradiation
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3042—Use of binding agents; addition of materials ameliorating the mechanical properties of the produced sorbent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3483—Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
The invention belongs to the technical field of tail gas treatment, and particularly relates to a sulfur-containing malodorous gas adsorbent and a preparation method thereof. The invention takes a molecular sieve, a binder, an auxiliary agent and deionized water as raw materials; fully mixing and kneading the mixture into blocky pug; drying and curing the formed massive pug at the temperature of 70-200 ℃ for 1-3 hours; and extruding the cured blocky pug into strips by using a vacuum extrusion molding machine, and roasting at the temperature of 300-700 ℃ for 1-5 hours to obtain the adsorbent. The sulfur-containing malodorous gas adsorbent provided by the invention has the advantages of no wastewater, no environmental pollution, low cost, few processes, large particles, high strength, low cost, convenience and simplicity, and no secondary pollution, and can be used as a filler for adsorption of industrial flue gas.
Description
Technical Field
The invention belongs to the technical field of tail gas treatment, and particularly relates to a sulfur-containing malodorous gas adsorbent applied to the aspect of purifying flue gas containing sulfur-containing malodorous gas and a preparation method thereof.
Background
Coal is a low-cost and rich-resource, can be processed into various chemical raw materials, fills the resource structure of less oil and less gas in China, and occupies a leading position in the national economic field. However, in the conversion process, because the traditional old application mode is deficient and insufficient in many aspects, the environment is seriously polluted, and sulfur contained in coal has catalytic toxicity to subsequent processing, so that the sulfur element contained in the coal greatly limits the popularization and application of the sulfur element in the industry.
In order to alleviate the shortage of coal utilization, a series of efficient and clean utilization modes should be established to thoroughly solve the problems of environmental pollution and resource waste. With the increasing importance of people on the sulfur content in the coal gas, the sulfur in the coal gas must be removed. The sulfur in the coal gas is usually present in the coal as hydrogen sulfide, which is converted into sulfur-containing malodorous gases when combusted in the coal gas. The harm of sulfur-containing malodorous gases to human health is also insidious. Therefore, the gas purification is one of the key technologies of coal poly-generation and IGCC technologies, in particular to the removal of sulfur-containing components in the gas.
The traditional desulfurization mode is wet desulfurization, high-temperature flue gas is introduced into lime water, and sulfur-containing malodorous gas reacts with the lime water to produce gypsum. The method not only wastes a large amount of heat energy, but also has poor gypsum quality and low utilization value or cannot be utilized.
The application number '201710239688.2' discloses a method for adsorbing and removing sulfur dioxide-containing gas in flue gas by using a double-shell ZSM-5 molecular sieve, in the method, the sulfur dioxide gas in the flue gas is adsorbed by using a large-aperture ZSM-5, the double-shell ZSM-5 molecular sieve is prepared by reacting a molecular sieve with an alkaline substance tetrabutyl ammonium hydroxide, the double-shell molecular sieve can adsorb the sulfur dioxide-containing gas, the method needs centrifugal separation, waste liquid is difficult to treat, the environment is polluted, and the molecular sieve has very fine granularity, so that the method cannot be applied to industrial production.
Disclosure of Invention
The present invention is directed to solve the above problems in the background art, and an object of the present invention is to provide an adsorbent for malodorous gas containing sulfur and a method for preparing the same.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a sulfur-containing malodorous gas adsorbent comprises the following raw materials in percentage by mass:
30-75 w% of molecular sieve, 3-20 w% of binder, 10-40 w% of auxiliary agent and 10-30 w% of deionized water.
Preferably, the molecular sieve is one or a mixture of two molecular sieves of a shape-selective molecular sieve and an A-type molecular sieve.
Preferably, the binder is one or a mixture of any two or three of alumina sol, silica sol, sesbania gum, hydroxymethyl cellulose and aluminosilicate.
Preferably, the auxiliary agent is one or a combination of any several of kaolin, bentonite, montmorillonite, silicon dioxide and the like.
The preparation method of the sulfur malodorous gas adsorbent is completed according to the following steps:
step one, fully mixing the molecular sieve, the binder, the auxiliary agent and deionized water in percentage by mass, and kneading into a blocky pug;
step two, drying and curing the blocky pug formed in the step one at the temperature of 70-200 ℃ for 1-3 hours;
and step three, extruding the blocky pug solidified in the step two into strips by using a vacuum extrusion molding machine, and roasting at the temperature of 300-700 ℃ for 1-5 hours to prepare the adsorbent.
Compared with the prior art, the invention has the following advantages:
firstly, the adsorbent can adsorb the sulfur-containing malodorous gas in the flue gas, and the adsorbed sulfur-containing malodorous gas is desorbed under certain conditions and can be recycled, and the method has good performance of adsorbing the sulfur-containing malodorous gas at normal temperature to 200 ℃, can remove the sulfur-containing malodorous gas in the flue gas, and does not lose heat energy in the flue gas.
Secondly, the shape-selective molecular sieve has large specific surface area, abundant pore structures and is a very good adsorption material, so that the molecular sieve is used as the adsorption material to adsorb and desorb gas at a certain temperature and pressure.
Thirdly, the adsorbent related to the invention absorbs the sulfur-containing malodorous gas under certain conditions, then the adsorbent is heated to resolve the absorbed sulfur-containing malodorous gas, the waste gas is recycled, the waste is changed into valuable, and the environmental pollution is reduced, thus the method is economic and environment-friendly and is easy to operate.
Fourthly, the sulfur-containing malodorous gas adsorbent provided by the invention has the advantages of no wastewater, no environment pollution, low cost, few processes, large particles, high strength, low cost, convenience and simplicity, and no secondary pollution, and can be used as a filler for adsorption of industrial flue gas.
Detailed Description
Example 1
The adsorbent PZ-1 is prepared by fully mixing a 200g A type molecular sieve, 60g of alumina sol, 50g of kaolin and 100g of water, kneading into a block mud material, curing the block mud material at normal temperature for 2 hours, extruding the mud material into strips by using a vacuum extrusion molding machine, drying at 105 ℃ for 1.5 hours, and roasting at 550 ℃ for 3 hours.
Example 2
Mixing a 200g A type molecular sieve, 60g of silica sol, 50g of kaolin and 100g of water, kneading the mixture into a block mud material, curing the block mud material at normal temperature for 2 hours, extruding the mud material into strips by using a vacuum extrusion molding machine, drying the strips at 105 ℃ for 1.5 hours, and roasting the strips at 550 ℃ for 3 hours to prepare the adsorbent PZ-2.
Example 3
Mixing 200g of shape selective molecular sieve, 60g of sesbania powder, 50g of kaolin and 100g of water, kneading into a block pug, curing the block pug at normal temperature for 2 hours, extruding the pug into strips by using a vacuum extrusion molding machine, drying at 105 ℃ for 1.5 hours, and roasting at 550 ℃ for 3 hours to prepare the adsorbent PZ-3.
Physical properties of the adsorbent
Bulk density: 0.66-0.75g/cm3
Appearance: white strip
Comparison table: 270-350m2/g
Compressive strength: 120-160N/cm
30ml of the adsorbent prepared above was loaded into an evaluation apparatus and evaluated, and the adsorption effect was compared as follows:
PZ-1 Normal pressure Desorption experiment
| Time of day | Temperature of | Space velocity/h | Inlet concentration ppm | Outlet concentration ppm |
| 16:18 | 400 | 1667 | 0 | >1322 |
| 16:25 | 400 | 1667 | 0 | >1322 |
| 16:34 | 400 | 1667 | 0 | 917 |
| 16:55 | 400 | 1667 | 0 | 223 |
| 17:00 | 400 | 1667 | 0 | 48 |
| 17:05 | 400 | 1667 | 0 | 45 |
PZ-1 reduced pressure desorption experiment
Adsorbing again
| Adsorbent and process for producing the same | Temperature of | Space velocity/h | Inlet concentration ppm | Outlet concentration ppm | Adsorption rate |
| PZ-1 | 200 | 1667 | 200 | 32 | 84％ |
| PZ-1 | 200 | 1667 | 200 | 33 | 84％ |
| PZ-1 | 200 | 1667 | 200 | 32 | 84％ |
| PZ-1 | 200 | 1667 | 200 | 34 | 83％ |
Claims (5)
1. The sulfur-containing malodorous gas adsorbent is characterized by comprising the following raw materials in percentage by mass:
30-75 w% of molecular sieve, 3-20 w% of binder, 10-40 w% of auxiliary agent and 10-30 w% of deionized water.
2. The sulfur-containing malodorous gas adsorbent of claim 1, which is characterized in that: the molecular sieve adopts one or the mixture of two molecular sieves of a shape-selective molecular sieve and an A-type molecular sieve.
3. The sulfur-containing malodorous gas adsorbent of claim 1, which is characterized in that: the binder is one or a mixture of any two or three of alumina sol, silica sol, sesbania gum, hydroxymethyl cellulose and aluminosilicate.
4. The sulfur-containing malodorous gas adsorbent of claim 1, which is characterized in that: the auxiliary agent is one or the combination of any more of kaolin, bentonite, montmorillonite, silicon dioxide and the like.
5. A process for producing the sulfur malodorous gas adsorbent of any one of claims 1 to 4, characterized by: the method comprises the following steps:
step one, fully mixing the molecular sieve, the binder, the auxiliary agent and deionized water in percentage by mass, and kneading into a blocky pug;
step two, drying and curing the blocky pug formed in the step one at the temperature of 70-200 ℃ for 1-3 hours;
and step three, extruding the blocky pug solidified in the step two into strips by using a vacuum extrusion molding machine, and roasting at the temperature of 300-700 ℃ for 1-5 hours to prepare the adsorbent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010562992.2A CN111686683A (en) | 2020-06-19 | 2020-06-19 | Sulfur-containing malodorous gas adsorbent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010562992.2A CN111686683A (en) | 2020-06-19 | 2020-06-19 | Sulfur-containing malodorous gas adsorbent and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111686683A true CN111686683A (en) | 2020-09-22 |
Family
ID=72481911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010562992.2A Pending CN111686683A (en) | 2020-06-19 | 2020-06-19 | Sulfur-containing malodorous gas adsorbent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111686683A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113058587A (en) * | 2021-03-26 | 2021-07-02 | 山西普丽环境工程股份有限公司 | High-dispersion flat plate type low-temperature denitration catalyst and preparation method thereof |
| CN113145104A (en) * | 2021-04-21 | 2021-07-23 | 山西普丽环境工程股份有限公司 | Preparation method of hydrolysis desulfurization catalyst |
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2020
- 2020-06-19 CN CN202010562992.2A patent/CN111686683A/en active Pending
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113058587A (en) * | 2021-03-26 | 2021-07-02 | 山西普丽环境工程股份有限公司 | High-dispersion flat plate type low-temperature denitration catalyst and preparation method thereof |
| CN113058587B (en) * | 2021-03-26 | 2022-10-18 | 山西普丽环境工程股份有限公司 | High-dispersion flat plate type low-temperature denitration catalyst and preparation method thereof |
| CN113145104A (en) * | 2021-04-21 | 2021-07-23 | 山西普丽环境工程股份有限公司 | Preparation method of hydrolysis desulfurization catalyst |
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Application publication date: 20200922 |