CN113663472A - Multistage treatment method for organic waste gas - Google Patents
Multistage treatment method for organic waste gas Download PDFInfo
- Publication number
- CN113663472A CN113663472A CN202111041712.4A CN202111041712A CN113663472A CN 113663472 A CN113663472 A CN 113663472A CN 202111041712 A CN202111041712 A CN 202111041712A CN 113663472 A CN113663472 A CN 113663472A
- Authority
- CN
- China
- Prior art keywords
- nitrogen
- treatment
- temperature
- solid
- reaction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000007789 gas Substances 0.000 title claims abstract description 26
- 239000010815 organic waste Substances 0.000 title claims abstract description 17
- 230000003197 catalytic effect Effects 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 38
- 238000001179 sorption measurement Methods 0.000 claims abstract description 37
- 230000003647 oxidation Effects 0.000 claims abstract description 36
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims abstract description 34
- 239000003463 adsorbent Substances 0.000 claims abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910021417 amorphous silicon Inorganic materials 0.000 claims abstract description 18
- 239000010941 cobalt Substances 0.000 claims abstract description 17
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910000428 cobalt oxide Inorganic materials 0.000 claims abstract description 17
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 15
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 8
- 238000003795 desorption Methods 0.000 claims abstract description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 70
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 69
- 239000007787 solid Substances 0.000 claims description 65
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 60
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 46
- 238000006243 chemical reaction Methods 0.000 claims description 35
- 238000001035 drying Methods 0.000 claims description 35
- 229910052757 nitrogen Inorganic materials 0.000 claims description 35
- 238000005406 washing Methods 0.000 claims description 35
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 238000001354 calcination Methods 0.000 claims description 27
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 24
- 238000001816 cooling Methods 0.000 claims description 21
- 239000008367 deionised water Substances 0.000 claims description 21
- 229910021641 deionized water Inorganic materials 0.000 claims description 21
- 238000001914 filtration Methods 0.000 claims description 21
- 239000011521 glass Substances 0.000 claims description 21
- 239000013246 bimetallic metal–organic framework Substances 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 12
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 10
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 10
- 239000013110 organic ligand Substances 0.000 claims description 10
- GPNNOCMCNFXRAO-UHFFFAOYSA-N 2-aminoterephthalic acid Chemical compound NC1=CC(C(O)=O)=CC=C1C(O)=O GPNNOCMCNFXRAO-UHFFFAOYSA-N 0.000 claims description 9
- XNDZQQSKSQTQQD-UHFFFAOYSA-N 3-methylcyclohex-2-en-1-ol Chemical group CC1=CC(O)CCC1 XNDZQQSKSQTQQD-UHFFFAOYSA-N 0.000 claims description 9
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-dimethylformamide Substances CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 9
- 239000012295 chemical reaction liquid Substances 0.000 claims description 9
- QGUAJWGNOXCYJF-UHFFFAOYSA-N cobalt dinitrate hexahydrate Chemical group O.O.O.O.O.O.[Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O QGUAJWGNOXCYJF-UHFFFAOYSA-N 0.000 claims description 9
- 238000006460 hydrolysis reaction Methods 0.000 claims description 9
- CNFDGXZLMLFIJV-UHFFFAOYSA-L manganese(II) chloride tetrahydrate Chemical group O.O.O.O.[Cl-].[Cl-].[Mn+2] CNFDGXZLMLFIJV-UHFFFAOYSA-L 0.000 claims description 9
- 238000002791 soaking Methods 0.000 claims description 9
- 238000003763 carbonization Methods 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 239000002244 precipitate Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000009210 therapy by ultrasound Methods 0.000 claims description 7
- OYFRNYNHAZOYNF-UHFFFAOYSA-N 2,5-dihydroxyterephthalic acid Chemical compound OC(=O)C1=CC(O)=C(C(O)=O)C=C1O OYFRNYNHAZOYNF-UHFFFAOYSA-N 0.000 claims description 4
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 4
- 239000003054 catalyst Substances 0.000 claims description 4
- 150000001868 cobalt Chemical class 0.000 claims description 4
- 150000002696 manganese Chemical class 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 238000010000 carbonizing Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- LXBGSDVWAMZHDD-UHFFFAOYSA-N 2-methyl-1h-imidazole Chemical compound CC1=NC=CN1 LXBGSDVWAMZHDD-UHFFFAOYSA-N 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims description 2
- 230000007062 hydrolysis Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 239000012855 volatile organic compound Substances 0.000 description 23
- 239000002912 waste gas Substances 0.000 description 16
- 239000000945 filler Substances 0.000 description 10
- 239000000575 pesticide Substances 0.000 description 8
- 239000012298 atmosphere Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- 239000011572 manganese Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 230000000813 microbial effect Effects 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 239000012046 mixed solvent Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000005886 Chlorantraniliprole Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 231100000053 low toxicity Toxicity 0.000 description 2
- 239000012621 metal-organic framework Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 241000238421 Arthropoda Species 0.000 description 1
- 241000283690 Bos taurus Species 0.000 description 1
- 239000005901 Flubendiamide Substances 0.000 description 1
- 241000124008 Mammalia Species 0.000 description 1
- 230000007059 acute toxicity Effects 0.000 description 1
- 231100000403 acute toxicity Toxicity 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 benzamide compound Chemical class 0.000 description 1
- KXDAEFPNCMNJSK-UHFFFAOYSA-N benzene carboxamide Natural products NC(=O)C1=CC=CC=C1 KXDAEFPNCMNJSK-UHFFFAOYSA-N 0.000 description 1
- PSOVNZZNOMJUBI-UHFFFAOYSA-N chlorantraniliprole Chemical compound CNC(=O)C1=CC(Cl)=CC(C)=C1NC(=O)C1=CC(Br)=NN1C1=NC=CC=C1Cl PSOVNZZNOMJUBI-UHFFFAOYSA-N 0.000 description 1
- 230000007665 chronic toxicity Effects 0.000 description 1
- 231100000160 chronic toxicity Toxicity 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- ZGNITFSDLCMLGI-UHFFFAOYSA-N flubendiamide Chemical compound CC1=CC(C(F)(C(F)(F)F)C(F)(F)F)=CC=C1NC(=O)C1=CC=CC(I)=C1C(=O)NC(C)(C)CS(C)(=O)=O ZGNITFSDLCMLGI-UHFFFAOYSA-N 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000749 insecticidal effect Effects 0.000 description 1
- 239000002071 nanotube Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000007666 subchronic toxicity Effects 0.000 description 1
- 231100000195 subchronic toxicity Toxicity 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 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
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/223—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material containing metals, e.g. organo-metallic compounds, coordination complexes
- B01J20/226—Coordination polymers, e.g. metal-organic frameworks [MOF], zeolitic imidazolate frameworks [ZIF]
-
- 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
- B01D53/04—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 stationary adsorbents
-
- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/24—Nitrogen compounds
-
- 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
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/391—Physical properties of the active metal ingredient
- B01J35/394—Metal dispersion value, e.g. percentage or fraction
-
- 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
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention discloses a multistage treatment method of organic waste gas, which comprises the steps of carrying out adsorption treatment on the organic waste gas by adopting an adsorption assembly formed by serially connecting a plurality of adsorption columns filled with nitrogen-doped carbon adsorbents, then carrying out heating desorption treatment on the adsorption assembly, feeding gas desorbed by the adsorption assembly into a catalytic oxidation reactor, and carrying out catalytic oxidation treatment under the catalysis of a nitrogen-doped cobalt/manganese oxide material coated by amorphous silicon oxide. The method is simple to operate and good in treatment effect.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a multistage treatment method of organic waste gas.
Background
The big problems influencing the existence and development of the cattle comprise population, environment, food, energy and the like, pesticides are closely and inseparably connected with the problems, the improvement of the pesticides can promote the income increase and the yield increase of the food, so that the living conditions of people are improved, but the unreasonable use of the pesticides also brings about little harm to the environment, and the health of people is influenced by the enrichment of a food chain. Therefore, some pesticides with high toxicity, poor selectivity and large residual quantity must be abandoned, and novel pesticides with low toxicity, small residual quantity and small environmental pollution are sought. China is a big agricultural country, and people cultivate 22% of the population of the world by using 7% of cultivated land area of the world. The pesticide is also in a relatively important position in China, but the unreasonable use of the pesticide in China pollutes the environment, so the research and development of the pesticide with low toxicity is urgent.
Chlorantraniliprole is a novel o-formamido benzamide compound developed by DuPont corporation in 2000, is formed by structural optimization and modification on the basis of flubendiamide, has a good insecticidal effect, is low in toxicity, has extremely small acute, sub-chronic and chronic toxicity to mammals, has little influence on non-target organisms and a plurality of non-target arthropods, and is widely applied. At present, the synthesis process of chlorantraniliprole benzoyl is mature, but a large amount of waste gas is generated in the synthesis process, and if the waste gas is not treated in time, the waste gas pollutes the atmosphere.
The patent with the application number of CN201711292252.6 provides a VOC-containing waste gas catalytic purification treatment method, and VOC-containing waste gas enters a heat exchanger after passing through a fan, and the heated VOC-containing waste gas enters a catalytic oxidation reactor, and simultaneously a low-temperature catalytic oxidation reactor is arranged in a mode of being connected with the catalytic oxidation reactor in parallel, and the outlet material flow of the catalytic oxidation reactor and the low-temperature catalytic oxidation reactor is cooled by the heat exchanger and then is discharged up to the standard. The patent with application number CN201610983548.1 provides a method for treating VOC waste gas, comprising the following steps: selecting a compound microorganism; domesticating the composite microorganism by using a domestication nutrient solution; carrying out centrifugal resuspension operation to improve the concentration of microorganisms; soaking the activated carbon particles in the composite microbial liquid to obtain a microbial activated carbon filler; selecting a framework filler, and mixing the framework filler with a microbial activated carbon filler to obtain a biological carrier filler; filling a biological carrier filler into the biological trickling filter; spraying the spray liquid to the top of the biological carrier filler, wherein the spray liquid can flow through the biological carrier filler and drip to the bottom of the biological trickling filter based on the self gravity of the spray liquid; introducing VOC waste gas to the bottom of the biological carrier filler for enabling the VOC waste gas to permeate the biological carrier filler; the spray liquid at the bottom of the biological trickling filter is collected and discharged, so that the VOC waste gas treatment efficiency can be improved. As can be seen from the above prior art, although the existing methods for treating organic waste gas are mature, the treatment effect needs to be further improved in specific applications. Since how to optimize the organic waste gas treatment process to improve the treatment effect becomes an important objective of research.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the defects in the prior art, the method for treating the organic waste gas in multiple stages is simple to operate and good in treatment effect.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a multi-stage treatment method for organic waste gas includes such steps as adsorbing the organic waste gas by serially connected adsorption modules with multiple adsorption columns containing N-doped carbon adsorbent, heating for desorption, introducing the desorbed gas into catalytic oxidation reactor, and catalytic oxidizing under the catalysis of nitrogen-doped Co/Mn oxide coated by amorphous silicon oxide.
As a preferred aspect of the above technical solution, the preparation method of the nitrogen-doped carbon adsorbent comprises:
mixing aluminum salt, organic ligand, sodium hydroxide solution and methanol under 500-600W for ultrasonic treatment for 30-50min, placing the obtained mixture in a high-pressure kettle for constant-temperature reaction at the temperature of 120-130 ℃ for 2.5-3.5h, cooling to room temperature after the reaction is finished, performing centrifugal treatment, washing the obtained precipitate with methanol, and drying to obtain metal-organic gel powder; placing the calcined solid in a muffle furnace under a nitrogen atmosphere for primary calcination treatment, washing the calcined solid by using a hydrochloric acid solution and deionized water in sequence, and then mixing the washed solid with a 2mol/L ethanol solution of potassium hydroxide in a mass ratio of 1: (4-5) mixing and activating for 30min, drying, then carrying out secondary calcination, and finally washing and drying calcined solids by using a hydrochloric acid solution and deionized water in sequence to prepare the adsorbent;
preferably, in the above aspect, the aluminum salt is aluminum nitrate nonahydrate, the organic ligand is 2-aminoterephthalic acid, the concentration of the sodium hydroxide solution is 2mol/L, and the ratio of the amount of aluminum nitrate nonahydrate, 2-aminoterephthalic acid, sodium hydroxide solution and methanol is (1.5-1.7) g: (0.1-0.15) g: (2-2.5) ml: 50 ml.
Preferably, the nitrogen flow rate is 100ml/min, the temperature rise rate is 3-5 ℃/min, the calcination temperature is 700 ℃, the time of the first calcination treatment is 4.5-5.5h, and the time of the second calcination treatment is 0.5-1.5 h.
Preferably, in the above technical solution, the method for preparing the amorphous silicon oxide-coated nitrogen-doped cobalt/manganese oxide material comprises:
(1) mixing manganese salt, cobalt salt and an organic ligand, adding a solvent mixed by DMF, water and ethanol, stirring until the solid is dissolved, reacting at the temperature of 115 ℃ and 125 ℃ for 22-25h, cooling to room temperature after the reaction is finished, filtering the reaction solution, washing the obtained solid by deionized water and ethanol in sequence, and drying to obtain the bimetallic MOF material;
(2) soaking the prepared bimetallic MOF material in ethyl orthosilicate at 55-65 ℃ for 10-15h, filtering, washing the filtered solid by adopting methanol, putting the washed solid in a glass tube, adding a hydrochloric acid solution into the glass tube, introducing nitrogen into the glass tube, carrying out hydrolysis reaction at constant temperature of 45-55 ℃ for 28-32h, stopping introducing the nitrogen after the reaction is finished, cooling to room temperature, filtering the reaction liquid, drying, carbonizing in nitrogen atmosphere, and finally calcining the carbonized solid to prepare the amorphous silicon oxide coated nitrogen-doped cobalt/manganese oxide material.
Preferably, in the step (1), the manganese salt is manganese chloride tetrahydrate, the cobalt salt is cobalt nitrate hexahydrate, and the organic ligand is one of 2-methylimidazole, 2, 5-dihydroxyterephthalic acid and 1,3, 5-trimesic acid; the dosage ratio of the manganese chloride tetrahydrate, the cobalt nitrate hexahydrate, the organic ligand, the DMF, the water and the ethanol is (5-5.5) mmol: (1.5-2) mmol: (2-2.5) mmol: 150 ml: (5-10) ml: (5-10) ml.
Preferably, the dosage ratio of the bimetallic MOF material to the tetraethoxysilane is (0.5-1) g: (8-10) ml.
Preferably, in the above technical scheme, the concentration of the hydrochloric acid solution is 0.1mol/L, and the dosage ratio of the hydrochloric acid solution to the solid is 5-8 ml: 1g of a compound; the nitrogen flow rate during hydrolysis is 10-15 ml/min.
Preferably, in the carbonization treatment, the flow rate of nitrogen is 145-155ml/min, the temperature is firstly increased to 400 ℃ at the speed of 5 ℃/min, the temperature is kept for 1h, then the temperature is increased to 600 ℃ at the speed of 3 ℃/min, and the constant temperature is kept for 3-4 h; the calcining treatment is to heat up to 500 ℃ at the speed of 1 ℃/min and keep the temperature for 1-3 h.
Preferably, the amount of intake air during adsorption is 0.5 to 1m3The desorption temperature is 95-105 ℃, the desorption time is 1-1.5h, the reaction temperature in the catalytic oxidation reactor is 300-450 ℃, and the air speed ratio in the catalytic oxidation is 30000-50000h-1The catalytic oxidation reactor is a fixed bed with the outer diameter of 20mm, the inner diameter of 10mm and the height of 20mm, and the filling amount of the catalyst is 0.2-0.3m3。
Due to the adoption of the technical scheme, the invention has the beneficial effects that:
the invention adopts the adsorption method and the catalytic oxidation method to jointly treat the organic waste gas, and has simple operation and good effect. The method comprises the steps of firstly preparing a Co and manganese-based bimetallic MOF material, then taking the Co and manganese-based bimetallic MOF material as a template, adding the Co and manganese-based bimetallic MOF material into tetraethoxysilane for soaking by adopting a nano-casting method, then hydrolyzing, then carbonizing in a nitrogen atmosphere, and finally calcining, wherein a nitrogen-doped cobalt/manganese oxide is coated in an amorphous silicon oxide nanotube, so that the catalytic active sites of the catalyst are effectively protected, and the catalyst has higher catalytic activity; in addition, the method adopts the bimetallic MOF material as the template, and the nano-casting method is more favorable for dispersing the catalytic active sites, so that the prepared material has high catalytic efficiency.
According to the invention, self-made nitrogen-doped porous carbon is used as an adsorbent, metal-organic gel is firstly prepared as a precursor, the metal-organic gel is calcined and activated by potassium hydroxide, and then the metal-organic gel is calcined again to increase the porosity of the metal-organic gel.
Detailed Description
The invention is further illustrated by the following examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
The content of VOCs in the organic waste gas in the following examples is 8000-10000mg/m3。
Example 1
Mixing 15g of aluminum nitrate nonahydrate, 1g of 2-aminoterephthalic acid, 20ml of 2mol/L sodium hydroxide solution and 500ml of methanol under 500W, carrying out ultrasonic treatment for 30min, placing the obtained mixture in an autoclave for carrying out constant temperature reaction at 120 ℃ for 2.5h, cooling to room temperature after the reaction is finished, carrying out centrifugal treatment, washing the obtained precipitate with methanol, and then drying to obtain metal-organic gel powder; placing the mixture into a muffle furnace, controlling the flow of nitrogen to be 100ml/min, heating to 700 ℃ at the speed of 3 ℃/min to perform primary calcination treatment for 4.5 hours, then washing calcined solids by sequentially adopting 1mol/L hydrochloric acid solution and deionized water, and then mixing the washed calcined solids with 2mol/L ethanol solution of potassium hydroxide in a mass ratio of 1: 4 for 30min, drying, heating to 700 ℃ at the speed of 3 ℃/min, controlling the nitrogen flow to be 100ml/min, carrying out secondary calcination treatment for 1h, washing calcined solids by sequentially adopting 1mol/L hydrochloric acid solution and deionized water, and drying to obtain the adsorbent;
mixing 5mmol of manganese chloride tetrahydrate, 1.5mmol of cobalt nitrate hexahydrate and 2mmol of 1,3, 5-trimesic acid, adding a solvent mixed by 150ml of DMF, 5ml of water and 5ml of ethanol, stirring until the solid is dissolved, reacting for 22 hours at 115 ℃, cooling to room temperature after the reaction is finished, filtering the reaction liquid, washing the obtained solid by deionized water and ethanol in sequence, and drying to obtain the MOF bimetallic material;
soaking 5g of prepared bimetallic MOF material in 80ml of ethyl orthosilicate at 55 ℃ for 10h, then filtering, washing the filtered solid by adopting methanol, then placing the washed solid in a glass tube, adding a hydrochloric acid solution with the concentration of 0.1mol/L into the glass tube, wherein the dosage ratio of the hydrochloric acid solution to the solid is 5 ml: 1g, introducing nitrogen into a glass tube, wherein the flow rate of the nitrogen is 145ml/min, carrying out hydrolysis reaction at constant temperature of 45 ℃ for 28h, stopping introducing the nitrogen after the reaction is finished, cooling to room temperature, filtering and drying the reaction liquid, heating to 400 ℃ at the speed of 5 ℃/min in the nitrogen atmosphere, keeping the temperature for 1h, heating to 600 ℃ at the speed of 3 ℃/min, keeping the temperature for 3h, heating the solid obtained by carbonization to 500 ℃ at the speed of 1 ℃/min in the air atmosphere, and keeping the temperature for 1h to obtain the amorphous silicon oxide-coated nitrogen-doped cobalt/manganese oxide material;
the content of VOCs is 8000mg/m3At a rate of 1m3Pumping the nitrogen-doped carbon adsorbent into an adsorption assembly formed by serially connecting 3 adsorption columns filled with the nitrogen-doped carbon adsorbent at a flow rate of/h for adsorption treatment, then heating and desorbing the adsorption assembly at the temperature of 95 ℃ for 1h, introducing the gas desorbed from the adsorption assembly into a catalytic oxidation reactor, and controlling the air speed ratio during catalytic oxidation to be 30000h-1Catalytic oxidation treatment is carried out at 300 ℃ under the catalysis of nitrogen-doped cobalt/manganese oxide materials coated by amorphous silicon oxide, and the content of VOCs in the waste gas at the outlet of a catalytic oxidation reactor is 5mg/m3The removal rate of VOCs was 99.94%.
Example 2
Mixing 17g of aluminum nitrate nonahydrate, 1.5g of 2-aminoterephthalic acid, 25ml of sodium hydroxide solution with the concentration of 2mol/L and 500ml of methanol under 600W, carrying out ultrasonic treatment for 50min, placing the obtained mixture in an autoclave for carrying out constant temperature reaction for 3.5h at 130 ℃, cooling to room temperature after the reaction is finished, carrying out centrifugal treatment, washing the obtained precipitate with methanol, and then drying to obtain metal-organic gel powder; placing the mixture into a muffle furnace, controlling the flow of nitrogen to be 100ml/min, heating to 700 ℃ at the speed of 5 ℃/min to perform primary calcination treatment for 5.5h, then washing calcined solids by sequentially adopting 1mol/L hydrochloric acid solution and deionized water, and then mixing the washed calcined solids with 2mol/L ethanol solution of potassium hydroxide in a mass ratio of 1: 5 for 30min, drying, heating to 700 ℃ at a speed of 5 ℃/min, controlling the nitrogen flow to be 100ml/min, carrying out secondary calcination treatment for 1.5h, and finally washing the calcined solid by sequentially adopting 1mol/L hydrochloric acid solution and deionized water, and drying to obtain the adsorbent;
mixing 5.5mmol of manganese chloride tetrahydrate, 2mmol of cobalt nitrate hexahydrate and 2.5mmol of 1,3, 5-trimesic acid, adding 150ml of DMF, 10ml of water and 10ml of ethanol mixed solvent, stirring until the solid is dissolved, reacting for 25 hours at 125 ℃, cooling to room temperature after the reaction is finished, filtering the reaction solution, washing the obtained solid by deionized water and ethanol in sequence, and drying to obtain the bimetallic MOF material;
soaking 10g of prepared bimetallic MOF material in 100ml of ethyl orthosilicate at 65 ℃ for 15h, then filtering, washing the filtered solid by adopting methanol, then placing the washed solid in a glass tube, adding a hydrochloric acid solution with the concentration of 0.1mol/L into the glass tube, wherein the dosage ratio of the hydrochloric acid solution to the solid is 8 ml: 1g, introducing nitrogen into a glass tube, wherein the flow rate of the nitrogen is 155ml/min, carrying out hydrolysis reaction at constant temperature of 55 ℃ for 32h, stopping introducing the nitrogen after the reaction is finished, cooling to room temperature, filtering and drying the reaction liquid, heating to 400 ℃ at the speed of 5 ℃/min in the nitrogen atmosphere, keeping the temperature for 1h, heating to 600 ℃ at the speed of 3 ℃/min, keeping the temperature for 4h, heating the solid obtained by carbonization to 500 ℃ at the speed of 1 ℃/min in the air atmosphere, and keeping the temperature for 3h to obtain the amorphous silicon oxide-coated nitrogen-doped cobalt/manganese oxide material;
the content of VOCs is 10000mg/m3At a rate of 1m3Pumping the gas into an adsorption assembly formed by serially connecting 3 adsorption columns filled with nitrogen-doped carbon adsorbents at a flow rate of/h for adsorption treatment, heating and desorbing the adsorption assembly at the temperature of 105 ℃ for 1.5h, and allowing the gas desorbed from the adsorption assembly to enter a catalytic oxidation reactor for catalytic oxidationThe space-time speed ratio is 50000h-1Catalytic oxidation treatment is carried out at 450 ℃ under the catalysis of nitrogen-doped cobalt/manganese oxide materials coated by amorphous silicon oxide, and the content of VOCs in the waste gas at the outlet of a catalytic oxidation reactor is 20mg/m3The removal rate of VOCs was 99.8%.
Example 3
Mixing 15.5g of aluminum nitrate nonahydrate, 1g of 2-amino terephthalic acid, 22ml of sodium hydroxide solution with the concentration of 2mol/L and 500ml of methanol under 500W, carrying out ultrasonic treatment for 35min, placing the obtained mixture in an autoclave, carrying out constant temperature reaction for 3h at 120 ℃, cooling to room temperature after the reaction is finished, carrying out centrifugal treatment, washing the obtained precipitate with methanol, and drying to obtain metal-organic gel powder; placing the mixture into a muffle furnace, controlling the flow of nitrogen to be 100ml/min, heating to 700 ℃ at the speed of 3.5 ℃/min to perform primary calcination treatment for 5h, washing calcined solids by sequentially adopting 1mol/L hydrochloric acid solution and deionized water, and then mixing the washed calcined solids with 2mol/L ethanol solution of potassium hydroxide in a mass ratio of 1: 4 for 30min, drying, heating to 700 ℃ at the speed of 3 ℃/min, controlling the nitrogen flow to be 100ml/min, carrying out secondary calcination treatment for 1h, washing calcined solids by sequentially adopting 1mol/L hydrochloric acid solution and deionized water, and drying to obtain the adsorbent;
mixing 5mmol of manganese chloride tetrahydrate, 2mmol of cobalt nitrate hexahydrate and 2.5mmol of 1,3, 5-trimesic acid, adding a solvent mixed by 150ml of DMF, 8ml of water and 8ml of ethanol, stirring until the solid is dissolved, reacting for 23 hours at 120 ℃, cooling to room temperature after the reaction is finished, filtering the reaction solution, washing the obtained solid by deionized water and ethanol in sequence, and drying to obtain the MOF bimetallic material;
soaking 6g of prepared bimetallic MOF material in 90ml of 60 ℃ ethyl orthosilicate for 11h, then filtering, washing the filtered solid by adopting methanol, then placing the washed solid in a glass tube, adding a hydrochloric acid solution with the concentration of 0.1mol/L into the glass tube, wherein the dosage ratio of the hydrochloric acid solution to the solid is 5 ml: 1g, introducing nitrogen into a glass tube, wherein the flow rate of the nitrogen is 150ml/min, carrying out hydrolysis reaction at constant temperature of 50 ℃ for 29h, stopping introducing the nitrogen after the reaction is finished, cooling to room temperature, filtering and drying the reaction liquid, heating to 400 ℃ at the speed of 5 ℃/min in the nitrogen atmosphere, keeping the temperature for 1h, heating to 600 ℃ at the speed of 3 ℃/min, keeping the temperature for 3h, heating the solid obtained by carbonization to 500 ℃ at the speed of 1 ℃/min in the air atmosphere, and keeping the temperature for 2h to obtain the amorphous silicon oxide-coated nitrogen-doped cobalt/manganese oxide material;
the content of VOCs is 9000mg/m3At a rate of 1m3Pumping the nitrogen-doped carbon adsorbent into an adsorption assembly formed by serially connecting 3 adsorption columns filled with the nitrogen-doped carbon adsorbent at a flow rate, heating and desorbing the adsorption assembly at the temperature of 100 ℃ for 1 hour, introducing the gas desorbed from the adsorption assembly into a catalytic oxidation reactor, and performing catalytic oxidation at an air speed ratio of 40000 hours-1Catalytic oxidation treatment is carried out at 450 ℃ under the catalysis of nitrogen-doped cobalt/manganese oxide materials coated by amorphous silicon oxide, and the content of VOCs in the waste gas at the outlet of a catalytic oxidation reactor is 10mg/m3The removal rate of VOCs is 99.89%.
Example 4
Mixing 16g of aluminum nitrate nonahydrate, 1.5g of 2-aminoterephthalic acid, 25ml of 2mol/L sodium hydroxide solution and 500ml of methanol at 5600W, carrying out ultrasonic treatment for 50min, placing the obtained mixture in an autoclave, carrying out constant-temperature reaction at 120 ℃ for 3.5h, cooling to room temperature after the reaction is finished, carrying out centrifugal treatment, washing the obtained precipitate with methanol, and drying to obtain metal-organic gel powder; placing the mixture into a muffle furnace, controlling the flow of nitrogen to be 100ml/min, heating to 700 ℃ at the speed of 4 ℃/min to perform primary calcination treatment for 5 hours, washing calcined solids by sequentially adopting 1mol/L hydrochloric acid solution and deionized water, and then mixing the washed solids with 2mol/L ethanol solution of potassium hydroxide in a mass ratio of 1: 5 for 30min, drying, heating to 700 ℃ at a speed of 4 ℃/min, controlling the nitrogen flow to be 100ml/min, carrying out secondary calcination for 1h, washing calcined solids by sequentially adopting 1mol/L hydrochloric acid solution and deionized water, and drying to obtain the adsorbent;
mixing 5.5mmol of manganese chloride tetrahydrate, 2mmol of cobalt nitrate hexahydrate and 2.5mmol of 1,3, 5-trimesic acid, adding 150ml of DMF, 10ml of water and 10ml of ethanol mixed solvent, stirring until the solid is dissolved, reacting for 25 hours at 120 ℃, cooling to room temperature after the reaction is finished, filtering the reaction solution, washing the obtained solid by deionized water and ethanol in sequence, and drying to obtain the bimetallic MOF material;
soaking 8g of prepared bimetallic MOF material in 90ml of 60 ℃ ethyl orthosilicate for 12h, then filtering, washing the filtered solid by adopting methanol, then placing the washed solid in a glass tube, adding a hydrochloric acid solution with the concentration of 0.1mol/L into the glass tube, wherein the dosage ratio of the hydrochloric acid solution to the solid is 8 ml: 1g, introducing nitrogen into a glass tube, wherein the flow rate of the nitrogen is 150ml/min, carrying out hydrolysis reaction at a constant temperature of 50 ℃ for 30h, stopping introducing the nitrogen after the reaction is finished, cooling to room temperature, filtering and drying the reaction liquid, heating to 400 ℃ at a speed of 5 ℃/min in the nitrogen atmosphere, keeping the temperature for 1h, heating to 600 ℃ at a speed of 3 ℃/min, keeping the temperature for 3.5h, heating the solid obtained by carbonization to 500 ℃ at a speed of 1 ℃/min in the air atmosphere, and keeping the temperature for 2h to obtain the amorphous silicon oxide coated nitrogen-doped cobalt/manganese oxide material;
the content of VOCs is 9500mg/m3At a rate of 1m3Pumping the nitrogen-doped carbon adsorbent into an adsorption assembly formed by serially connecting 3 adsorption columns filled with the nitrogen-doped carbon adsorbent at a flow rate of/h for adsorption treatment, then heating and desorbing the adsorption assembly at the temperature of 100 ℃ for 1.5h, introducing the gas desorbed by the adsorption assembly into a catalytic oxidation reactor, and leading the space velocity ratio during catalytic oxidation to be 40000h-1Catalytic oxidation treatment is carried out at 400 ℃ under the catalysis of nitrogen-doped cobalt/manganese oxide materials coated by amorphous silicon oxide, and the content of VOCs in the waste gas at the outlet of a catalytic oxidation reactor is 20mg/m3The removal rate of VOCs was 99.79%.
Example 5
Mixing 16.5g of aluminum nitrate nonahydrate, 1.5g of 2-amino terephthalic acid, 25ml of sodium hydroxide solution with the concentration of 2mol/L and 500ml of methanol under 600W, carrying out ultrasonic treatment for 50min, placing the obtained mixture in an autoclave for carrying out constant temperature reaction for 3h at 130 ℃, cooling to room temperature after the reaction is finished, carrying out centrifugal treatment, washing the obtained precipitate with methanol, and then drying to obtain metal-organic gel powder; placing the mixture into a muffle furnace, controlling the flow of nitrogen to be 100ml/min, heating to 700 ℃ at the speed of 5 ℃/min to perform primary calcination treatment for 5.5h, then washing calcined solids by sequentially adopting 1mol/L hydrochloric acid solution and deionized water, and then mixing the washed calcined solids with 2mol/L ethanol solution of potassium hydroxide in a mass ratio of 1: 4 for 30min, drying, heating to 700 ℃ at a speed of 5 ℃/min, controlling the nitrogen flow to be 100ml/min, carrying out secondary calcination treatment for 1.5h, and finally washing the calcined solid by sequentially adopting 1mol/L hydrochloric acid solution and deionized water, and drying to obtain the adsorbent;
mixing 5mmol of manganese chloride tetrahydrate, 1.5mmol of cobalt nitrate hexahydrate and 2.5mmol of 1,3, 5-trimesic acid, adding 150ml of DMF, 10ml of water and 10ml of ethanol mixed solvent, stirring until the solid is dissolved, reacting for 22h at 120 ℃, cooling to room temperature after the reaction is finished, filtering the reaction liquid, washing the obtained solid by deionized water and ethanol in sequence, and drying to obtain the bimetallic MOF material;
soaking 10g of prepared bimetallic MOF material in 80ml of 60 ℃ ethyl orthosilicate for 15h, then filtering, washing the filtered solid by adopting methanol, then placing the washed solid in a glass tube, adding a hydrochloric acid solution with the concentration of 0.1mol/L into the glass tube, wherein the dosage ratio of the hydrochloric acid solution to the solid is 8 ml: 1g, introducing nitrogen into a glass tube, wherein the flow rate of the nitrogen is 150ml/min, carrying out hydrolysis reaction at constant temperature of 50 ℃ for 32h, stopping introducing the nitrogen after the reaction is finished, cooling to room temperature, filtering and drying the reaction liquid, heating to 400 ℃ at the speed of 5 ℃/min in the nitrogen atmosphere, keeping the temperature for 1h, heating to 600 ℃ at the speed of 3 ℃/min, keeping the temperature for 4h, heating the solid obtained by carbonization to 500 ℃ at the speed of 1 ℃/min in the air atmosphere, and keeping the temperature for 2h to obtain the amorphous silicon oxide-coated nitrogen-doped cobalt/manganese oxide material;
the content of VOCs is 9500mg/m3At a rate of 1m3Pumping the nitrogen-doped carbon adsorbent into an adsorption assembly formed by serially connecting 3 adsorption columns filled with the nitrogen-doped carbon adsorbent at a flow rate, heating the adsorption assembly at 100 ℃ for desorption for 1.5h, and desorbing the adsorption assemblyThe gas enters a catalytic oxidation reactor, and the air speed ratio during catalytic oxidation is 50000h-1Catalytic oxidation treatment is carried out at 450 ℃ under the catalysis of nitrogen-doped cobalt/manganese oxide materials coated by amorphous silicon oxide, and the content of VOCs in the waste gas at the outlet of a catalytic oxidation reactor is 20mg/m3The removal rate of VOCs was 99.79%.
The embodiment shows that the method provided by the invention has the advantages that the removal rate of the volatile organic pollutants is up to more than 99% and the effect is good when the method is used for treating the high-concentration organic waste gas.
Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Claims (10)
1. A multistage treatment method of organic waste gas is characterized in that: the method comprises the steps of adsorbing organic waste gas by adopting an adsorption assembly formed by serially connecting a plurality of adsorption columns filled with nitrogen-doped carbon adsorbents, heating and desorbing the adsorption assembly, allowing the gas desorbed by the adsorption assembly to enter a catalytic oxidation reactor, and performing catalytic oxidation treatment under the catalysis of an amorphous silicon oxide coated nitrogen-doped cobalt/manganese oxide material.
2. The method of claim 1, further comprising the step of: the preparation method of the nitrogen-doped carbon adsorbent comprises the following steps:
mixing aluminum salt, organic ligand, sodium hydroxide solution and methanol under 500-600W for ultrasonic treatment for 30-50min, placing the obtained mixture in a high-pressure kettle for constant-temperature reaction at the temperature of 120-130 ℃ for 2.5-3.5h, cooling to room temperature after the reaction is finished, performing centrifugal treatment, washing the obtained precipitate with methanol, and drying to obtain metal-organic gel powder; placing the calcined solid in a muffle furnace under a nitrogen atmosphere for primary calcination treatment, washing the calcined solid by using a hydrochloric acid solution and deionized water in sequence, and then mixing the washed solid with a 2mol/L ethanol solution of potassium hydroxide in a mass ratio of 1: (4-5) mixing and activating for 30min, drying, then carrying out secondary calcining treatment, finally washing the calcined solid by using a hydrochloric acid solution and deionized water in sequence, and drying to obtain the adsorbent.
3. The multistage treatment method of an organic waste gas according to claim 2, characterized in that: the aluminum salt is aluminum nitrate nonahydrate, the organic ligand is 2-amino terephthalic acid, the concentration of a sodium hydroxide solution is 2mol/L, and the dosage ratio of the aluminum nitrate nonahydrate, the 2-amino terephthalic acid, the sodium hydroxide solution and the methanol is (1.5-1.7) g: (0.1-0.15) g: (2-2.5) ml: 50 ml.
4. The multistage treatment method of an organic waste gas according to claim 2, characterized in that: the nitrogen flow during the first calcination treatment and the second calcination treatment is 100ml/min, the heating rate is 3-5 ℃/min, the calcination temperature is 700 ℃, the time of the first calcination treatment is 4.5-5.5h, and the time of the second calcination treatment is 0.5-1.5 h.
5. The method of claim 1, further comprising the step of: the preparation method of the amorphous silicon oxide coated nitrogen-doped cobalt/manganese oxide material comprises the following steps:
(1) mixing manganese salt, cobalt salt and an organic ligand, adding a solvent mixed by DMF, water and ethanol, stirring until the solid is dissolved, reacting at the temperature of 115 ℃ and 125 ℃ for 22-25h, cooling to room temperature after the reaction is finished, filtering the reaction solution, washing the obtained solid by deionized water and ethanol in sequence, and drying to obtain the bimetallic MOF material;
(2) soaking the prepared bimetallic MOF material in ethyl orthosilicate at 55-65 ℃ for 10-15h, filtering, washing the filtered solid by adopting methanol, putting the washed solid in a glass tube, adding a hydrochloric acid solution into the glass tube, introducing nitrogen into the glass tube, carrying out hydrolysis reaction at constant temperature of 45-55 ℃ for 28-32h, stopping introducing the nitrogen after the reaction is finished, cooling to room temperature, filtering the reaction liquid, drying, carbonizing in nitrogen atmosphere, and finally calcining the carbonized solid to prepare the amorphous silicon oxide coated nitrogen-doped cobalt/manganese oxide material.
6. The method of claim 5, further comprising the steps of: in the step (1), the manganese salt is manganese chloride tetrahydrate, the cobalt salt is cobalt nitrate hexahydrate, and the organic ligand is one of 2-methylimidazole, 2, 5-dihydroxyterephthalic acid and 1,3, 5-trimesic acid; the dosage ratio of the manganese chloride tetrahydrate, the cobalt nitrate hexahydrate, the organic ligand, the DMF, the water and the ethanol is (5-5.5) mmol: (1.5-2) mmol: (2-2.5) mmol: 150 ml: (5-10) ml: (5-10) ml.
7. The method of claim 5, further comprising the steps of: in the step (2), the dosage ratio of the bimetallic MOF material to the tetraethoxysilane is (0.5-1) g: (8-10) ml.
8. The method of claim 5, further comprising the steps of: in the step (2), the concentration of the hydrochloric acid solution is 0.1mol/L, and the dosage ratio of the hydrochloric acid solution to the solid is 5-8 ml: 1g of a compound; the nitrogen flow rate during hydrolysis is 10-15 ml/min.
9. The method of claim 5, further comprising the steps of: in the step (1), during carbonization treatment, the flow rate of nitrogen is 155ml/min, the temperature is firstly increased to 400 ℃ at the speed of 5 ℃/min, the temperature is kept for 1h, then the temperature is increased to 600 ℃ at the speed of 3 ℃/min, and the temperature is kept for 3-4 h; the calcining treatment is to heat up to 500 ℃ at the speed of 1 ℃/min and keep the temperature for 1-3 h.
10. The method of claim 1, further comprising the step of: the air inflow during adsorption is 0.5-1m3The desorption temperature is 95-105 ℃, the desorption time is 1-1.5h, the reaction temperature in the catalytic oxidation reactor is 300-450 ℃, and the air speed ratio in the catalytic oxidation is 30000-50000h-1The catalytic oxidation reactor has an outer diameter of 20A fixed bed with mm, inner diameter of 10mm and height of 20mm, and the filling amount of the catalyst is 0.2-0.3m3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111041712.4A CN113663472B (en) | 2021-09-07 | 2021-09-07 | Multistage treatment method for organic waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111041712.4A CN113663472B (en) | 2021-09-07 | 2021-09-07 | Multistage treatment method for organic waste gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113663472A true CN113663472A (en) | 2021-11-19 |
| CN113663472B CN113663472B (en) | 2022-11-01 |
Family
ID=78548498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111041712.4A Active CN113663472B (en) | 2021-09-07 | 2021-09-07 | Multistage treatment method for organic waste gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113663472B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116408337A (en) * | 2023-05-31 | 2023-07-11 | 瑞邦环境治理(广东)有限公司 | In-situ aerobic stabilization method for stock garbage |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107583453A (en) * | 2017-09-18 | 2018-01-16 | 东莞市联洲知识产权运营管理有限公司 | A kind of method of low-cost processes VOCs waste gas |
| CN109381964A (en) * | 2018-09-28 | 2019-02-26 | 中科天龙（厦门）环保股份有限公司 | Organic exhaust gas recovery and processing system and method |
| CN109759110A (en) * | 2019-01-03 | 2019-05-17 | 华南理工大学 | A kind of N doping porous carbon loaded titanium dioxide photocatalyst and the preparation method and application thereof |
| US20200094187A1 (en) * | 2018-08-01 | 2020-03-26 | The Hong Kong University Of Science And Tech | Two-dimensional catalytic materials derived from metal-organic frameworks for voc remediation |
| CN112569927A (en) * | 2020-12-15 | 2021-03-30 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method of mesoporous silica-coated cobalt manganese oxide, product and application thereof |
| CN112569959A (en) * | 2020-12-17 | 2021-03-30 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method of manganese-modified carbon nanotube-loaded cobalt oxide, product and application thereof |
| CN112978893A (en) * | 2019-12-02 | 2021-06-18 | 中国石油化工股份有限公司 | Treatment method and system for sulfur-containing alkaline residue waste liquid |
| CN113274840A (en) * | 2021-05-18 | 2021-08-20 | 浙江菲达环保科技股份有限公司 | Device and method for treating VOCs waste gas through activated carbon adsorption high-temperature desorption-catalytic oxidation |
-
2021
- 2021-09-07 CN CN202111041712.4A patent/CN113663472B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107583453A (en) * | 2017-09-18 | 2018-01-16 | 东莞市联洲知识产权运营管理有限公司 | A kind of method of low-cost processes VOCs waste gas |
| US20200094187A1 (en) * | 2018-08-01 | 2020-03-26 | The Hong Kong University Of Science And Tech | Two-dimensional catalytic materials derived from metal-organic frameworks for voc remediation |
| CN109381964A (en) * | 2018-09-28 | 2019-02-26 | 中科天龙（厦门）环保股份有限公司 | Organic exhaust gas recovery and processing system and method |
| CN109759110A (en) * | 2019-01-03 | 2019-05-17 | 华南理工大学 | A kind of N doping porous carbon loaded titanium dioxide photocatalyst and the preparation method and application thereof |
| CN112978893A (en) * | 2019-12-02 | 2021-06-18 | 中国石油化工股份有限公司 | Treatment method and system for sulfur-containing alkaline residue waste liquid |
| CN112569927A (en) * | 2020-12-15 | 2021-03-30 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method of mesoporous silica-coated cobalt manganese oxide, product and application thereof |
| CN112569959A (en) * | 2020-12-17 | 2021-03-30 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method of manganese-modified carbon nanotube-loaded cobalt oxide, product and application thereof |
| CN113274840A (en) * | 2021-05-18 | 2021-08-20 | 浙江菲达环保科技股份有限公司 | Device and method for treating VOCs waste gas through activated carbon adsorption high-temperature desorption-catalytic oxidation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116408337A (en) * | 2023-05-31 | 2023-07-11 | 瑞邦环境治理(广东)有限公司 | In-situ aerobic stabilization method for stock garbage |
| CN116408337B (en) * | 2023-05-31 | 2023-10-17 | 瑞邦环境治理(广东)有限公司 | In-situ aerobic stabilization method for stock garbage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113663472B (en) | 2022-11-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110218721B (en) | High-stability immobilized carbonic anhydrase as well as preparation method and application thereof | |
| CN110787840A (en) | Bimetallic MOFs catalyst and preparation method and application thereof | |
| CN107362807B (en) | Mn/Co-based low-temperature SCO catalyst and preparation method thereof | |
| CN111085218A (en) | Manganese-cobalt composite oxide catalyst for eliminating VOCs (volatile organic compounds), and preparation method and application thereof | |
| CN108187688A (en) | It is a kind of can be at room temperature by the preparation method of the catalyst of formaldehyde complete catalysts oxidation | |
| CN111468147A (en) | Porous carbon composite titanium dioxide-oxyhalide photocatalyst and preparation method thereof | |
| CN113275034A (en) | Hierarchical pore molecular sieve catalyst for eliminating VOCs and preparation method thereof | |
| CN113663472B (en) | Multistage treatment method for organic waste gas | |
| CN111215067B (en) | Preparation method and application of lutecium gadolinium modified delta-manganese oxide compound supported platinum catalyst | |
| CN107519940B (en) | Catalyst for removing arsenic and mercury in yellow phosphorus tail gas and preparation method thereof | |
| CN112138665A (en) | CO-SCR low-temperature high-efficiency non-noble metal oxide catalyst and preparation method thereof | |
| CN114231518A (en) | Immobilized carbonic anhydrase and application thereof in preparation of carbon dioxide absorbent | |
| CN116272860B (en) | VOCs treated regenerated activated carbon and preparation method thereof | |
| CN115676896B (en) | Amorphous manganese oxide composite material and preparation method and application thereof | |
| CN111013573A (en) | Preparation method of supported binary manganese-based low-temperature denitration catalyst and catalyst | |
| CN112758922B (en) | Preparation process and system of high-pyridine nitrogen-doped activated carbon | |
| CN115007139A (en) | Manganese-based VOCs catalytic combustion catalyst rich in oxygen vacancies and preparation method thereof | |
| CN112934183B (en) | Organic waste gas adsorbent and preparation method thereof | |
| CN112717951B (en) | Preparation method of high-dispersion ruthenium-based catalyst and application of catalyst in purification of chlorine-containing volatile organic pollutants | |
| CN114160104A (en) | Kiln flue gas CO2Trapping and utilizing coupling material and application thereof | |
| CN109876772B (en) | Nano carbon fiber and active carbon composite material and preparation method thereof | |
| CN112973670A (en) | Preparation method of bismuth molybdate material for removing NO through photocatalysis and product | |
| CN110339813A (en) | A kind of Nano-composite magnetic materials and preparation method for air cleaning | |
| CN114870819B (en) | Aerobic atmosphere synthesis method of Fe (II) -MOF-74 material with NO adsorption performance | |
| CN114887583B (en) | Mesoporous alumina loaded Cu 2 Preparation method of O adsorbent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220608 Address after: 239300 No. 1, zhangbian Road, Zhangpu Town, Tianchang City, Chuzhou City, Anhui Province Applicant after: Tianchang high energy environmental protection technology Co.,Ltd. Address before: 558000 Shuanglong Industrial Park, NIUCHANG Town, Fuquan City, Qiannan Buyei and Miao Autonomous Prefecture, Guizhou Province Applicant before: Fuquan Xingsheng Biotechnology Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |