CN115532311A - Low-temperature plasma synergistic catalyst for treating odor of sludge storage yard - Google Patents
Low-temperature plasma synergistic catalyst for treating odor of sludge storage yard Download PDFInfo
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- CN115532311A CN115532311A CN202211195485.5A CN202211195485A CN115532311A CN 115532311 A CN115532311 A CN 115532311A CN 202211195485 A CN202211195485 A CN 202211195485A CN 115532311 A CN115532311 A CN 115532311A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 49
- 239000010802 sludge Substances 0.000 title claims abstract description 24
- 230000002195 synergetic effect Effects 0.000 title claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 65
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 56
- 230000003197 catalytic effect Effects 0.000 claims abstract description 43
- 239000000919 ceramic Substances 0.000 claims abstract description 29
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 28
- 239000002245 particle Substances 0.000 claims abstract description 26
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 23
- 229940071125 manganese acetate Drugs 0.000 claims abstract description 23
- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 claims abstract description 23
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 23
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 23
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 20
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 13
- 239000002002 slurry Substances 0.000 claims description 58
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 35
- 239000000843 powder Substances 0.000 claims description 17
- 239000000243 solution Substances 0.000 claims description 17
- 238000002791 soaking Methods 0.000 claims description 11
- 239000011259 mixed solution Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000011572 manganese Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 230000008030 elimination Effects 0.000 abstract description 5
- 238000003379 elimination reaction Methods 0.000 abstract description 5
- 238000002679 ablation Methods 0.000 abstract description 3
- 239000000969 carrier Substances 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 description 14
- 238000005507 spraying Methods 0.000 description 10
- 239000007788 liquid Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000000498 ball milling Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000010000 carbonizing Methods 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/06—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing polymers
- B01J31/063—Polymers comprising a characteristic microstructure
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- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
-
- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
- B01J31/32—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of manganese, technetium or rhenium
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/19—Catalysts containing parts with different compositions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/902—Multilayered catalyst
- B01D2255/9022—Two layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/90—Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/818—Employing electrical discharges or the generation of a plasma
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Health & Medical Sciences (AREA)
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- General Chemical & Material Sciences (AREA)
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Abstract
The invention discloses a low-temperature plasma synergistic catalyst for treating odor of a sludge storage yard, which comprises a carrier, a catalytic component and a regulator; the carrier accounts for 40-60% of the total amount of the catalyst; the catalytic component accounts for 35-55% of the total amount of the catalyst; the regulator accounts for 1-5% of the total amount of the catalyst, and the carrier is a mixture of activated carbon and ceramic; the catalytic components comprise polyvinyl alcohol, dilute nitric acid, aluminum oxide and manganese acetate; the regulator is sodium carbonate solution, through using active carbon and ceramic particle as the carrier, and the ceramic particle is the twice of active carbon particle, makes two kinds of carriers mix the back, can reserve more gaps between, the space that outside catalytic component can disperse is bigger, and is also more even, can fully contact with the foul smell, and the foul smell of mud storage yard flows more conveniently to can help carrying out low temperature plasma ablation, make the faster of foul smell elimination, the efficiency promotion that the foul smell was eliminated.
Description
Technical Field
The invention relates to the technical field of sludge odor treatment, in particular to a low-temperature plasma synergistic catalyst for sludge yard odor treatment.
Background
In order to reduce the harm to the environment, the sludge needs to be subjected to a plurality of treatment processes, not only the sludge is treated, but also the odor emitted by the sludge is treated, the odor treatment of the sludge mostly adopts a low-temperature plasma technology at present, and the odor is ablated by excited plasma under the auxiliary action of a catalyst;
however, the low-temperature plasma synergistic catalyst for treating the odor of the sludge storage yard has single carrier and unstable catalytic effect due to the fact that catalytic components are not easy to disperse.
Disclosure of Invention
The invention provides a low-temperature plasma synergistic catalyst for treating odor of a sludge yard, which can effectively solve the problems that the conventional low-temperature plasma synergistic catalyst for treating odor of the sludge yard has a single carrier, is difficult to disperse catalytic components and causes unstable catalytic effect in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a low-temperature plasma synergistic catalyst for treating odor in a sludge storage yard comprises a carrier, a catalytic component and a regulator;
the carrier accounts for 40-60% of the total amount of the catalyst;
the catalytic component accounts for 35-55% of the total amount of the catalyst;
the regulator accounts for 1-5% of the total amount of the catalyst.
According to the technical scheme, the carrier is a mixture of activated carbon and ceramic;
the catalytic component comprises polyvinyl alcohol, dilute nitric acid, aluminum oxide and manganese acetate;
the regulator is sodium carbonate solution.
According to the technical scheme, in the catalytic components, the proportion of polyvinyl alcohol is 10-20%, the proportion of dilute nitric acid is 10-20%, the proportion of aluminum oxide is 50-60%, and the proportion of manganese acetate is 10-20%.
According to the technical scheme, in the carrier, the mass ratio of the activated carbon to the ceramic is 1: 0.5-2.1;
the active carbon is carbonized, doped with one or more of Mn, fe and Cu, made into particles and mixed with ceramic particles;
the ceramic particles are twice the particle size of the activated carbon particles.
According to the technical scheme, slurry consisting of two layers of catalytic components is sprayed on the outer part of the activated carbon;
the inner layer slurry component is a mixture of aluminum oxide, sodium carbonate, polyvinyl alcohol, dilute nitric acid and manganese acetate;
the outer layer slurry component is alumina powder.
According to the technical scheme, in the inner layer slurry, alumina is firstly soaked in a sodium carbonate solution for soaking, then the alumina is taken out, washed, dried and ground into powder, the powder is put into a mixed solution of polyvinyl alcohol, sodium carbonate, dilute nitric acid and manganese acetate, and then the powder is ball-milled into slurry.
According to the technical scheme, the activated carbon sprayed with the inner layer slurry is roasted before the outer layer slurry is sprayed, and then the outer layer slurry is sprayed.
According to the technical scheme, the time for soaking the aluminum oxide in the sodium carbonate solution is 1-10h;
the outer layer slurry is slurry formed by mixing and stirring aluminum oxide and water.
Compared with the prior art, the invention has the following beneficial effects:
1. through using active carbon and ceramic granule as the carrier, and the ceramic granule is the twice of active carbon granule, makes two kinds of carriers mix the back, can reserve more gaps between, and the space that outside catalytic component can disperse is bigger, and is also more even, can fully contact with the foul smell, and the foul smell of mud storage yard flows more conveniently to can help carrying out low temperature plasma and melt, make the faster of foul smell elimination, the efficiency of foul smell elimination promotes.
2. Through soaking the sodium carbonate solution before spraying catalysis thick liquid, can get rid of the outside impurity of aluminium oxide, get rid of and accomplish the back, mix the ball-milling once more, not only can guarantee the purity of aluminium oxide, also make catalyst composition more stable, can not melt the process and cause the influence to normal foul smell.
3. The catalyst carrier is prepared by mixing alumina, polyvinyl alcohol, dilute nitric acid and manganese acetate, ball-milling the mixture into slurry, spraying the slurry outside the catalyst carrier, roasting the slurry, and spraying the alumina slurry outside the catalyst carrier, so that external catalytic components can be better attached, and odor can be better catalyzed in a low-temperature plasma ablation process.
In conclusion, through setting up the active carbon granule and the ceramic particle of different particle diameters, can make the gap between the carrier more, conveniently spray the thick liquid of catalytic component, before the spraying of catalytic component, carry out the flooding and clear away outside impurity to carry out twice spraying with catalytic component, make the thick liquid can more be attached to the carrier outside, improve the availability factor of catalyst.
Detailed Description
While the preferred embodiments of the present invention will be described below, it should be understood that the preferred embodiments described herein are merely illustrative and explanatory of the invention and are not restrictive thereof.
Example 1:
the invention provides a technical scheme, in particular to a low-temperature plasma synergistic catalyst for treating odor in a sludge storage yard, which comprises a carrier, a catalytic component and a regulator;
the carrier accounts for 50% of the total amount of the catalyst;
the catalytic component accounts for 45% of the total amount of the catalyst;
the regulator accounts for 5% of the total catalyst.
According to the technical scheme, the carrier is a mixture of activated carbon and ceramic;
the catalytic components comprise polyvinyl alcohol, dilute nitric acid, aluminum oxide and manganese acetate;
the regulator is sodium carbonate solution.
According to the technical scheme, in the catalytic components, the polyvinyl alcohol accounts for 10%, the dilute nitric acid accounts for 20%, the alumina accounts for 60%, and the manganese acetate accounts for 10%.
According to the technical scheme, in the carrier, the mass ratio of the activated carbon to the ceramic is 1: 1;
carbonizing the active carbon, doping metal Mn, preparing into granules, and mixing with ceramic granules;
the ceramic particles are twice the particle size of the activated carbon particles.
According to the technical scheme, slurry consisting of two layers of catalytic components is sprayed on the outer part of the activated carbon;
the inner layer slurry component is the mixture of aluminum oxide, sodium carbonate, polyvinyl alcohol, dilute nitric acid and manganese acetate;
the outer layer slurry component is alumina powder.
According to the technical scheme, in the inner layer slurry, alumina is firstly soaked in a sodium carbonate solution for soaking, then the alumina is taken out, washed, dried and ground into powder, the powder is put into a mixed solution of polyvinyl alcohol, sodium carbonate, dilute nitric acid and manganese acetate, and then the powder is ball-milled into slurry.
According to the technical scheme, the activated carbon sprayed with the inner layer slurry is roasted before the outer layer slurry is sprayed, and then the outer layer slurry is sprayed.
According to the technical scheme, the time for soaking the aluminum oxide in the sodium carbonate solution is 10 hours;
the outer layer slurry is slurry formed by mixing and stirring alumina and water.
Example 2:
the invention provides a technical scheme, in particular to a low-temperature plasma synergistic catalyst for treating odor in a sludge storage yard, which comprises a carrier, a catalytic component and a regulator;
the carrier accounts for 40% of the total amount of the catalyst;
the catalytic component accounts for 55% of the total catalyst;
the regulator accounts for 5 percent of the total amount of the catalyst.
According to the technical scheme, the carrier is a mixture of activated carbon and ceramic;
the catalytic components comprise polyvinyl alcohol, dilute nitric acid, aluminum oxide and manganese acetate;
the regulator is sodium carbonate solution.
According to the technical scheme, in the catalytic components, the ratio of polyvinyl alcohol is 20%, the ratio of dilute nitric acid is 15%, the ratio of aluminum oxide is 55%, and the ratio of manganese acetate is 10%.
According to the technical scheme, in the carrier, the mass ratio of the activated carbon to the ceramic is 1: 0.8;
carbonizing the active carbon, doping metal Fe, preparing into granules, and mixing with ceramic granules;
the ceramic particles are twice the particle size of the activated carbon particles.
According to the technical scheme, slurry consisting of two layers of catalytic components is sprayed on the outer part of the activated carbon;
the inner layer slurry component is a mixture of aluminum oxide, sodium carbonate, polyvinyl alcohol, dilute nitric acid and manganese acetate;
the outer layer slurry component is alumina powder.
According to the technical scheme, in the inner layer slurry, alumina is firstly soaked in a sodium carbonate solution for soaking, then the alumina is taken out, washed, dried and ground into powder, the powder is put into a mixed solution of polyvinyl alcohol, sodium carbonate, dilute nitric acid and manganese acetate, and then the powder is ball-milled into slurry.
According to the technical scheme, before the outer layer slurry is sprayed, the activated carbon sprayed with the inner layer slurry is roasted first, and then the outer layer slurry is sprayed.
According to the technical scheme, the length of time for soaking the aluminum oxide in the sodium carbonate solution is 1h;
the outer layer slurry is slurry formed by mixing and stirring alumina and water.
Example 3:
the invention provides a technical scheme, in particular to a low-temperature plasma synergistic catalyst for treating odor in a sludge storage yard, which comprises a carrier, a catalytic component and a regulator;
the carrier accounts for 60% of the total amount of the catalyst;
the catalytic component accounts for 36% of the total catalyst;
the regulator accounts for 4 percent of the total amount of the catalyst.
According to the technical scheme, the carrier is a mixture of activated carbon and ceramic;
the catalytic components comprise polyvinyl alcohol, dilute nitric acid, aluminum oxide and manganese acetate;
the regulator is sodium carbonate solution.
According to the technical scheme, in the catalytic components, the ratio of polyvinyl alcohol is 15%, the ratio of dilute nitric acid is 20%, the ratio of aluminum oxide is 50%, and the ratio of manganese acetate is 15%.
According to the technical scheme, in the carrier, the mass ratio of the activated carbon to the ceramic is 1: 1.7;
carbonizing the active carbon, doping metal Cu, preparing into granules, and mixing with ceramic granules;
the ceramic particles are twice the particle size of the activated carbon particles.
According to the technical scheme, slurry consisting of two layers of catalytic components is sprayed on the outer part of the activated carbon;
the inner layer slurry component is a mixture of aluminum oxide, sodium carbonate, polyvinyl alcohol, dilute nitric acid and manganese acetate;
the outer layer slurry component is alumina powder.
According to the technical scheme, in the inner layer slurry, firstly, aluminum oxide is soaked in a sodium carbonate solution for soaking, then, the aluminum oxide is taken out, washed, dried and ground into powder, the powder is placed into a mixed solution of polyvinyl alcohol, sodium carbonate, dilute nitric acid and manganese acetate, and then, the slurry is ball-milled.
According to the technical scheme, the activated carbon sprayed with the inner layer slurry is roasted before the outer layer slurry is sprayed, and then the outer layer slurry is sprayed.
According to the technical scheme, the time for soaking the aluminum oxide in the sodium carbonate solution is 5 hours;
the outer layer slurry is slurry formed by mixing and stirring alumina and water.
The catalysts prepared in examples 1-3 were tested and the following data were obtained:
| item | Example 1 | Example 2 | Example 3 |
| Removal Rate (90 min/%) | 94.5 | 93.0 | 93.2 |
Through the comparison of the embodiments 1 to 3, the technical effect of the embodiment 1 is better, more stable, and suitable for better popularization and use, and the following effects are also achieved:
1. through using active carbon and ceramic granule as the carrier, and the ceramic granule is the twice of active carbon granule, makes two kinds of carriers mix the back, can reserve more gaps between, and the space that outside catalytic component can disperse is bigger, and is also more even, can fully contact with the foul smell, and the foul smell of mud storage yard flows more conveniently to can help carrying out low temperature plasma and melt, make the faster of foul smell elimination, the efficiency of foul smell elimination promotes.
2. Through soaking the sodium carbonate solution before spraying catalysis thick liquid, can get rid of the outside impurity of aluminium oxide, get rid of and accomplish the back, mix the ball-milling once more, not only can guarantee the purity of aluminium oxide, also make catalyst composition more stable, can not melt the process and cause the influence to normal foul smell.
3. The catalyst carrier is prepared by mixing alumina, polyvinyl alcohol, dilute nitric acid and manganese acetate, ball-milling the mixture into slurry, spraying the slurry outside the catalyst carrier, roasting the slurry, and spraying the alumina slurry outside the catalyst carrier, so that external catalytic components can be better attached, and odor can be better catalyzed in a low-temperature plasma ablation process.
In conclusion, through setting up the active carbon granule and the ceramic particle of different particle diameters, can make the gap between the carrier more, conveniently spray the thick liquid of catalytic component, before the spraying of catalytic component, carry out the flooding and clear away outside impurity to carry out twice spraying with catalytic component, make the thick liquid can more be attached to the carrier outside, improve the availability factor of catalyst.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A low-temperature plasma synergistic catalyst for treating odor in a sludge storage yard is characterized in that: comprises a carrier, a catalytic component and a regulator;
the carrier accounts for 40-60% of the total amount of the catalyst;
the catalytic component accounts for 35-55% of the total amount of the catalyst;
the regulator accounts for 1-5% of the total amount of the catalyst.
2. The low-temperature plasma synergistic catalyst for treating odor of a sludge storage yard according to claim 1, wherein the carrier is a mixture of activated carbon and ceramic;
the catalytic components comprise polyvinyl alcohol, dilute nitric acid, aluminum oxide and manganese acetate;
the regulator is sodium carbonate solution.
3. The low-temperature plasma synergistic catalyst for treating odor of a sludge storage yard according to claim 1, wherein the catalytic components comprise:
the polyvinyl alcohol accounts for 10-20%;
the percentage of the dilute nitric acid is 10-20%;
the proportion of alumina is 50-60%;
the proportion of manganese acetate is 10-20%.
4. The low-temperature plasma synergistic catalyst for treating odor of a sludge storage yard according to claim 1, wherein the mass ratio of the activated carbon to the ceramic in the carrier is 1: 0.5-2.1;
the active carbon is carbonized firstly, then is doped with one or more of metal Mn, fe and Cu, is prepared into particles, and is mixed with ceramic particles;
the ceramic particles are twice the particle size of the activated carbon particles.
5. The low-temperature plasma synergistic catalyst for treating odor of the sludge storage yard according to claim 2, wherein slurry consisting of two layers of catalytic components is sprayed on the outside of the activated carbon;
the inner layer slurry component is the mixture of aluminum oxide, sodium carbonate, polyvinyl alcohol, dilute nitric acid and manganese acetate;
the outer layer slurry component is alumina powder.
6. The low-temperature plasma synergistic catalyst for treating sludge yard odor according to claim 1, wherein in the slurry of the inner layer, alumina is soaked in a sodium carbonate solution, then the alumina is taken out, washed, dried, ground into powder, put into a mixed solution of polyvinyl alcohol, sodium carbonate, dilute nitric acid and manganese acetate, and then ball-milled into slurry.
7. The low-temperature plasma synergistic catalyst for treating odor of the sludge storage yard as claimed in claim 6, wherein the activated carbon sprayed with the inner layer slurry is roasted before the outer layer slurry is sprayed, and then the outer layer slurry is sprayed.
8. The low-temperature plasma synergistic catalyst for treating odor of a sludge yard according to claim 7, wherein the length of time for soaking the alumina in the sodium carbonate solution is 1-10h;
the outer layer slurry is slurry formed by mixing and stirring aluminum oxide and water.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211195485.5A CN115532311A (en) | 2022-09-28 | 2022-09-28 | Low-temperature plasma synergistic catalyst for treating odor of sludge storage yard |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211195485.5A CN115532311A (en) | 2022-09-28 | 2022-09-28 | Low-temperature plasma synergistic catalyst for treating odor of sludge storage yard |
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2022
- 2022-09-28 CN CN202211195485.5A patent/CN115532311A/en active Pending
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| CN1345699A (en) * | 2000-09-30 | 2002-04-24 | 株式会社三和环境技术研究所 | Method and apparatus for making deodorised drinking-water |
| US20090324468A1 (en) * | 2008-06-27 | 2009-12-31 | Golden Stephen J | Zero platinum group metal catalysts |
| US20140336044A1 (en) * | 2013-05-10 | 2014-11-13 | Cdti | Copper-Manganese Spinel Catalysts and Methods of Making Same |
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