CN109092294B - VOCs catalytic combustion catalyst material and preparation method thereof - Google Patents
VOCs catalytic combustion catalyst material and preparation method thereof Download PDFInfo
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- CN109092294B CN109092294B CN201811080301.4A CN201811080301A CN109092294B CN 109092294 B CN109092294 B CN 109092294B CN 201811080301 A CN201811080301 A CN 201811080301A CN 109092294 B CN109092294 B CN 109092294B
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- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 36
- 238000007084 catalytic combustion reaction Methods 0.000 title claims abstract description 34
- 239000000463 material Substances 0.000 title claims abstract description 28
- 239000003054 catalyst Substances 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 34
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims abstract description 32
- CNLWCVNCHLKFHK-UHFFFAOYSA-N aluminum;lithium;dioxido(oxo)silane Chemical compound [Li+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O CNLWCVNCHLKFHK-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052900 illite Inorganic materials 0.000 claims abstract description 13
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 claims abstract description 13
- 229910052642 spodumene Inorganic materials 0.000 claims abstract description 13
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 12
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 14
- 238000001125 extrusion Methods 0.000 claims description 7
- 238000010304 firing Methods 0.000 claims description 7
- 239000013078 crystal Substances 0.000 claims description 3
- GOPYZMJAIPBUGX-UHFFFAOYSA-N [O-2].[O-2].[Mn+4] Chemical group [O-2].[O-2].[Mn+4] GOPYZMJAIPBUGX-UHFFFAOYSA-N 0.000 claims description 2
- 239000012778 molding material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 4
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 239000002699 waste material Substances 0.000 abstract description 6
- 239000006259 organic additive Substances 0.000 abstract description 4
- 229910000510 noble metal Inorganic materials 0.000 abstract description 3
- 150000003839 salts Chemical class 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000013543 active substance Substances 0.000 abstract description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 2
- 238000011068 loading method Methods 0.000 abstract description 2
- 238000005245 sintering Methods 0.000 abstract description 2
- 230000003197 catalytic effect Effects 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 12
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 208000014644 Brain disease Diseases 0.000 description 1
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- 201000004624 Dermatitis Diseases 0.000 description 1
- 208000006083 Hypokinesia Diseases 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 206010043275 Teratogenicity Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 210000000133 brain stem Anatomy 0.000 description 1
- 230000007670 carcinogenicity Effects 0.000 description 1
- 231100000260 carcinogenicity Toxicity 0.000 description 1
- 210000003169 central nervous system Anatomy 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 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 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 208000032839 leukemia Diseases 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 210000004994 reproductive system Anatomy 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 231100000211 teratogenicity 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/32—Manganese, technetium or rhenium
- B01J23/34—Manganese
-
- 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—
-
- B01J35/56—
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
Abstract
The invention provides a VOCs catalytic combustion catalyst material and a preparation method thereof, wherein the VOCs catalytic combustion catalyst material is prepared from the following raw materials, by weight, 30-35 parts of illite powder, 15-25 parts of spodumene powder, 20-30 parts of water glass, 25-30 parts of manganese dioxide powder and a small amount of other active substances. The invention controls the dosage ratio of each raw material and the technological parameters of the preparation method, and the catalytic combustion catalyst material is prepared by directly mixing, molding and sintering manganese dioxide and other inorganic minerals. In addition, the problems of high production cost, low production efficiency, discharge of a large amount of three wastes and the like caused by using organic salts and organic additives in substances during the use and loading of the noble metals are solved.
Description
Technical Field
The invention relates to the field of VOCs catalytic combustion catalysts, in particular to a VOCs catalytic combustion catalyst material and a preparation method thereof.
Background
VOCs are various volatile organic compounds, and specifically refer to organic compounds with saturated vapor pressure of more than 70Pa at normal temperature and boiling point of 260 ℃ below at normal pressure, or all organic compounds with corresponding volatility and vapor pressure of more than or equal to 10Pa at 20 ℃. The VOCs gas can participate in the reaction of nitrogen oxide under the action of sunlight and heat to form ozone, which causes the air quality to be poor and is the main component of photochemical smog and urban dust haze in summer; leading to the increase of PM2.5 and the increase of greenhouse effect; can stimulate eyes and respiratory tract of people, and cause skin allergy, pharyngalgia and hypodynamia; VOCs are easily accessible through blood-brain disorders, damaging the central nervous system; VOCs injure the liver, kidneys, brain and nervous system of a human; it has carcinogenicity, teratogenicity and reproductive system toxicity such as leukemia.
Therefore, the national pollution control is more and more strict, and the purification and supervision of the VOCs are more and more standard. At present, the prevention and control of VOCs mainly comprise source and process control, tail end treatment and comprehensive utilization, encouragement and research and development of new technologies, new materials and new equipment, enhanced operation and monitoring and the like.
The technologies for treating VOCs mainly comprise membrane separation technology, condensation technology, photocatalytic degradation, plasma technology, adsorption technology, biological treatment technology, direct combustion technology and low-temperature catalytic oxidation combustion technology.
The VOCs low-temperature catalytic oxidation combustion technology is the most common and effective technology for treating VOCS in the current market, and has the advantages of high treatment efficiency, low treatment cost, no secondary pollution and no open fire, but the cost of the catalyst is overhigh for restricting the long-term development of the VOCs low-temperature catalytic oxidation combustion technology at present, because the current VOCs low-temperature catalytic oxidation catalyst mainly has noble metal loaded with high specific area and basically loads active substances on the surface of a ceramic matrix, the manufacturing method is complex and is not beneficial to mass production, so that the production cost is increased, the catalytic efficiency is about 98 percent at the catalytic combustion temperature of about 220 ℃, organic additives and organic salts are required to be increased in the loaded substances, the cost is increased, and the three-waste emission is increased.
Disclosure of Invention
The invention aims to provide a VOCs catalytic combustion catalyst material, which takes montmorillonite powder, spodumene powder, water glass and manganese dioxide powder as raw materials.
The invention also aims to provide a preparation method of the VOCs catalytic combustion catalyst material, which is prepared by directly mixing, molding and sintering manganese dioxide and other inorganic minerals, has simple production method, is suitable for mass production, has low production cost and little discharge of three wastes in production.
The specific technical scheme of the invention is as follows:
the invention provides a VOCs catalytic combustion catalyst material which is prepared from the following raw materials, by weight, 30-35 parts of illite powder, 15-25 parts of spodumene powder, 20-30 parts of water glass and 25-30 parts of manganese dioxide powder.
Furthermore, the particle size of the illite powder is 325-400 meshes, the particle size of the spodumene is 325-400 meshes, and the particle size of the manganese dioxide is 400 meshes.
The manganese dioxide structure is a gamma crystal structure, and the content of manganese dioxide is more than 95%.
The invention provides a preparation method of a VOCs catalytic combustion catalyst material, which comprises the following steps:
1) according to the weight parts, 30-35 parts of illite powder, 15-25 parts of spodumene powder, 20-30 parts of water glass and 25-30 parts of manganese dioxide powder are mixed in a mixing roll for 10-20 minutes to prepare pug;
2) extruding and molding the pug prepared in the step 1) by using a vacuum extrusion molding machine;
3) drying the molding material obtained in the step 2);
4) firing the dried material in the step 3) to obtain the VOCs catalytic combustion catalyst material.
The extrusion molding in the step 2) is columnar, honeycomb or annular.
Step 3) the drying specifically comprises the following steps: drying in a mesh belt drying kiln for 120 min at the temperature of 120 ℃ and 150 ℃.
Step 4) the firing means firing at 650 ℃ for 1-1.5 hours at 500-.
According to the invention, the catalytic activity of catalytic combustion of manganese dioxide can be improved and the catalytic combustion temperature can be reduced by utilizing the illite powder, the spodumene powder and the water glass material and the proportion, and when the catalytic combustion temperature is 160 ℃, the catalytic combustion catalytic efficiency of VOCs can reach more than 99.9%; moreover, by utilizing the particle sizes of the illite powder, the spodumene powder and the water glass material, the crystal structure and the particle size of the manganese dioxide can be further improved, and the catalytic efficiency of the catalytic combustion of the VOCs can be further improved; by using the ratio of illite powder to water glass, the extrusion molding efficiency can be improved, the use of organic additives can be reduced, the discharge of three wastes can be reduced, and the production cost can be reduced.
Compared with the prior art, the preparation method of the catalytic combustion catalyst material is simple, suitable for mass production, low in production cost, high in catalysis temperature, low in catalysis efficiency and less in emission of three wastes in production. In addition, the problems of high production cost, low production efficiency, discharge of a large amount of three wastes and the like caused by using organic salts and organic additives in substances during the use and loading of the noble metals are solved.
Detailed Description
Example 1
A preparation method of a VOCs catalytic combustion catalyst material comprises the following steps:
1) according to the weight parts, 34 parts of illite powder with the particle size of 325 meshes, 25 parts of spodumene powder with the particle size of 325 meshes, 30 parts of water glass and 28 parts of gamma-manganese dioxide powder with the particle size of 400 meshes are mixed in a mixing roll for 12 minutes to prepare pug;
2) extruding the pug prepared in the step 1) into a columnar blank by using a vacuum extrusion molding machine;
3) drying the formed columnar blank in the step 1) in a mesh belt drying kiln for 120 minutes at the drying temperature of 150 ℃.
4) And (3) drying, and firing at 650 ℃ for 1 hour to obtain the VOCs catalytic combustion catalyst material.
The catalytic efficiency test data of the material of the catalytic combustion catalyst for VOCs prepared in example 1 are shown in table 1 below.
TABLE 1
| VOCs gas volume L/min | Intake air concentration mg/m3 | Catalytic combustion temperature | Outlet concentration mg/m3 | Catalytic efficiency |
| 1.016 | 1658 | 142.5 | 1.2 | 99.93％ |
Example 2
A preparation method of a VOCs catalytic combustion catalyst material comprises the following steps:
1) mixing 32 parts of illite powder with the particle size of 400 meshes, 15 parts of spodumene powder with the particle size of 400 meshes, 22 parts of water glass and 26 parts of gamma-manganese dioxide powder with the particle size of 400 meshes in a mixing roll for 10 minutes to prepare pug;
2) extruding the pug prepared in the step 1) into a columnar blank by using a vacuum extrusion molding machine;
3) drying the formed columnar blank in the step 1) in a mesh belt drying kiln for 100 minutes at the drying temperature of 120-150 ℃.
4) And (3) drying, and firing at 550 ℃ for 1.5 hours to obtain the VOCs catalytic combustion catalyst material.
The catalytic efficiency test data of the material of the catalytic combustion catalyst for VOCs prepared in example 2 are shown in table 2 below.
TABLE 2
According to the invention, the illite powder, the spodumene powder and the water glass material and the proportion are utilized to improve the catalytic activity of catalytic combustion of manganese dioxide and reduce the catalytic combustion temperature, and when the catalytic combustion temperature is 160 ℃, the catalytic combustion efficiency of VOCs can reach more than 99.9%.
Claims (6)
1. A catalyst material for VOCs catalytic combustion is characterized by being prepared from the following raw materials, by weight, 30-35 parts of illite powder, 15-25 parts of spodumene powder, 20-30 parts of water glass and 25-30 parts of manganese dioxide powder;
the particle size of the illite powder is 325-400 meshes;
the particle size of the spodumene powder is 325-400 meshes;
the manganese dioxide structure is a gamma crystal structure, and the content of manganese dioxide is more than 95%.
2. A VOCs catalytic combustion catalyst material as claimed in claim 1 wherein the particle size of the manganese dioxide is 400 mesh.
3. A method of preparing a catalytic combustion catalyst material for VOCs as claimed in claim 1 or 2, wherein said method comprises the steps of:
1) according to the weight parts, 30-35 parts of illite powder, 15-25 parts of spodumene powder, 20-30 parts of water glass and 25-30 parts of manganese dioxide powder are mixed in a mixing roll for 10-20 minutes to prepare pug;
2) extruding and molding the pug prepared in the step 1) by using a vacuum extrusion molding machine;
3) drying the molding material obtained in the step 2);
4) firing the dried material in the step 3) to obtain the VOCs catalytic combustion catalyst material.
4. The method according to claim 3, wherein the extrusion molding in the step 2) is in a columnar, honeycomb or ring shape.
5. The preparation method according to claim 3, wherein the drying of step 3) is specifically: drying in a mesh belt drying kiln for 120 min at the temperature of 120 ℃ and 150 ℃.
6. The method as claimed in claim 3, wherein the firing in step 4) is performed at 650 ℃ for 1-1.5 hours at 500-.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811080301.4A CN109092294B (en) | 2018-09-17 | 2018-09-17 | VOCs catalytic combustion catalyst material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811080301.4A CN109092294B (en) | 2018-09-17 | 2018-09-17 | VOCs catalytic combustion catalyst material and preparation method thereof |
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| CN109092294A CN109092294A (en) | 2018-12-28 |
| CN109092294B true CN109092294B (en) | 2021-08-10 |
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|---|---|---|---|---|
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| CN106975493A (en) * | 2017-04-20 | 2017-07-25 | 宁波钛安新材料科技有限公司 | A kind of honeycomb catalyst materials and its forming method |
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| CN107970948A (en) * | 2017-12-15 | 2018-05-01 | 江苏龙净科杰催化剂再生有限公司 | Flue gas denitration at the same time takes off VOCs honeycombed catalysts and preparation method thereof |
-
2018
- 2018-09-17 CN CN201811080301.4A patent/CN109092294B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002219363A (en) * | 2001-01-26 | 2002-08-06 | Matsushita Electric Ind Co Ltd | Catalyst for cleaning volatile organic compound and method for preparing the same |
| CN105013322A (en) * | 2015-06-25 | 2015-11-04 | 中国科学院生态环境研究中心 | Use of manganite catalyst in catalytic oxidation of formaldehyde |
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