CN104998656B8 - The method for preparing catalyst that methyl fluophosphonic acid isopropyl ester is converted in a kind of promotion chemical emission - Google Patents
The method for preparing catalyst that methyl fluophosphonic acid isopropyl ester is converted in a kind of promotion chemical emission Download PDFInfo
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- 239000002253 acid Substances 0.000 title abstract 5
- 239000003054 catalyst Substances 0.000 title abstract 5
- -1 isopropyl ester Chemical class 0.000 title abstract 5
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 title abstract 5
- 239000000126 substance Substances 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- 239000002912 waste gas Substances 0.000 abstract 2
- 230000003213 activating effect Effects 0.000 abstract 1
- 230000001413 cellular effect Effects 0.000 abstract 1
- 229910017052 cobalt Inorganic materials 0.000 abstract 1
- 239000010941 cobalt Substances 0.000 abstract 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 1
- 229910052737 gold Inorganic materials 0.000 abstract 1
- 239000010931 gold Substances 0.000 abstract 1
- 229910001385 heavy metal Inorganic materials 0.000 abstract 1
- 239000011133 lead Substances 0.000 abstract 1
- 238000002803 maceration Methods 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 239000010970 precious metal Substances 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
Abstract
Description
一种促进化工废气中甲氟膦酸异丙酯转化的催化剂制备方法Preparation method of catalyst for promoting conversion of isopropyl mefluorophosphonate in chemical waste gas
技术领域Technical field
[0001] 本发明涉及一种促进化工废气中甲氟膦酸异丙酯转化的催化剂制备方法，属于化工废气处理领域。 [0001] The present invention relates to a method for preparing a catalyst for promoting the conversion of isopropyl mefluorophosphonate in chemical waste gas, and belongs to the field of chemical waste gas treatment.
背景技术Background technique
[0002] 化工废气是指在化工生产中由化工厂排出的有毒有害的气体，严重污染环境和影响人体健康随着经济的发展。 [0002] Chemical waste gas refers to toxic and harmful gases discharged from chemical plants in chemical production, which seriously pollutes the environment and affects human health along with economic development. 化工等重工业发展迅速，各地化工企业不断涌出，随之而来的空气污染问题也日益为人们所重视，由此而产生的甲氟膦酸异丙酯也成为行业发展的其中一个制约因素，而为了保持企业的可持续发展，减少环境污染、提高企业经济和社会效益， 对化工废气进行深度处理不容置疑。 Heavy industries such as the chemical industry are developing rapidly, and chemical companies from all over the country are constantly pouring out, and the resulting air pollution problem has also become more and more important. The resulting isopropyl mefluorophosphonate has also become one of the restricting factors in the development of the industry. In order to maintain the sustainable development of the enterprise, reduce environmental pollution, and improve the economic and social benefits of the enterprise, the advanced treatment of chemical waste gas is beyond doubt. 目前处理化工废气甲氟膦酸异丙酯的方法很多，比如废气转换它将废气通过含化学物质的水淋塔转换为废水，再处理废水，水淋塔造价较高，会产生水污染，是大多企业采用方案，因为水污染由污水处理公司处理，属于浪费型废气处理方式。 At present, there are many methods to treat chemical waste gas isopropyl mefluorophosphonate, such as waste gas conversion, which converts waste gas through a water leaching tower containing chemical substances into waste water, and then treating the waste water. The water leaching tower is expensive to build and will cause water pollution. Most companies adopt the scheme because the water pollution is handled by the sewage treatment company, which is a wasteful waste gas treatment method. 废气吸附，通过活性炭化学改性，有针对性吸附，减少对外排放量，是国内运用较多的低成本废气治理方法，但由于活性炭容易饱和，需要定期更换，运行成本较高。 Exhaust gas adsorption, through the chemical modification of activated carbon, targeted adsorption to reduce external emissions, is a low-cost exhaust gas treatment method that is widely used in China. However, because activated carbon is easy to saturate, it needs to be replaced regularly, and the operating cost is high. 还有蓄热式氧化法通过加热陶瓷，让有机气体通过蓄热燃烧室进行燃烧，达到去除的目的。 There is also a regenerative oxidation method that heats ceramics and allows organic gases to burn through a regenerative combustion chamber to achieve the purpose of removal. 这种方法虽然运行费用低，但设备重量大，维护保养困难，需在特定的高温高压下降解，易产生二次污染。 Although this method has low operating costs, the equipment is heavy and difficult to maintain. It needs to be degraded under specific high temperature and high pressure, which is prone to secondary pollution. 以上所述的方法中，一种经过水淋塔转换为废水然后在处理，一种是通过活性炭有针对吸附，一种通过进行蓄热燃烧去除，它们有的运行成本高、易产生二次污染、设备维护困难， 有的去除率低、占地面积多，不能满足化工企业的需要，严重影响企业的可持续发展。 Among the above-mentioned methods, one is converted into waste water through a water leaching tower and then treated, one is targeted adsorption by activated carbon, and the other is removed by regenerative combustion. Some of them have high operating costs and are prone to secondary pollution. , Equipment maintenance is difficult, some have low removal rate and large area, which cannot meet the needs of chemical enterprises, and seriously affect the sustainable development of enterprises. 为了解决去除率低、成本高、易产生二次污染的问题，发明了一种促进化工废气中甲氟膦酸异丙酯转化的催化剂制备方法，实现了在常温条件下把甲氟膦酸异丙酯马上分解转化的效果， 去除率达到99%以上，为化工企业的快速发展提供了强有力的保证。 In order to solve the problems of low removal rate, high cost, and easy to produce secondary pollution, a catalyst preparation method for promoting the conversion of isopropyl mefluorophosphonate in chemical waste gas was invented. The effect of propyl ester decomposition and transformation immediately, with a removal rate of over 99%, provides a strong guarantee for the rapid development of chemical enterprises.
发明内容Summary of the invention
[0003] 针对上述方法中所存在的运行成本高、去除率低、易产生二次污染等问题，提供一种促进化工废气中甲氟膦酸异丙酯转化的催化剂制备方法。 [0003] Aiming at the problems of high operating cost, low removal rate, and secondary pollution that exist in the above method, a catalyst preparation method for promoting the conversion of isopropyl mefluorophosphonate in chemical waste gas is provided. 本发明通过载体液处理、浸渍液配制、浸渍、干燥、焙烧形成蜂窝状的多种贵金属的催化剂再溶化还原的方法进行化工废气处理，成本低、甲氟膦酸异丙酯去除率高，避免了二次污染问题。 The present invention uses carrier solution treatment, dipping solution preparation, dipping, drying, and roasting to form a honeycomb-shaped catalyst remelting reduction method of multiple noble metals for chemical waste gas treatment, low cost, high isopropyl mefluorophosphonate removal rate, and avoid The problem of secondary pollution has been solved.
[0004] 为了达到上述目的，本发明所采用的技术方案是： [0004] In order to achieve the above objective, the technical solution adopted by the present invention is:
[0005] (1)载体预处理：按重量份数比计，取10份凹凸棒土、20份膨润土、30份蛭石，加入10-15份海波石、20-40份明矾；同时按质量比加入与混合物质量比为1:3的水混合均匀，经烘干、粉碎、研磨成粉末，作为催化剂载体； [0005] (1) Carrier pretreatment: take 10 parts of attapulgite, 20 parts of bentonite, 30 parts of vermiculite, add 10-15 parts of hypolith, 20-40 parts of alum in parts by weight ratio; The mass ratio is mixed with water with a mass ratio of 1:3 and the mixture is dried, crushed, and ground into powder, which is used as a catalyst carrier;
[0006] (2)浸渍液配置:按质量浓度比计，配成质量浓度分别为5〜8g/L硝酸铅，2〜3g/L 氯化钴，4〜6g/L氰化金，10〜13g/L硝酸镍，5〜8g/L环戊二酸和1〜2g/L草酰乙酸溶液； [0006] (2) Immersion solution configuration: according to the mass concentration ratio, the mass concentrations are respectively 5~8g/L lead nitrate, 2~3g/L cobalt chloride, 4~6g/L gold cyanide, 10~ 13g/L nickel nitrate, 5~8g/L cycloglutaric acid and 1~2g/L oxaloacetic acid solution;
[0007] ⑶浸渍:按体积比为1:1.5将催化剂载体与浸渍液浸渍12〜24小时； [0007] ⑶ impregnation: the catalyst carrier and the impregnation solution are immersed in a volume ratio of 1:1.5 for 12 to 24 hours;
[0008] (4)干燥、焙烧:在通氮气条件下于105°C烘箱中干燥4〜6小时;在负压为0 • 3MPa、 温度为800°C〜850°C条件下焙烧I.5〜3_0小时，然后在负压为0.3〜0.5MPa常温条件下迅速冷却干燥，即可得到蜂窝状含多种重金属的催化剂； [0008] (4) Drying and roasting: drying in an oven at 105°C under nitrogen for 4~6 hours; roasting 1.5 at a negative pressure of 0•3MPa and a temperature of 800°C~850°C ~3_0 hours, and then rapidly cool and dry under a negative pressure of 0.3~0.5MPa at room temperature to obtain a honeycomb-shaped catalyst containing multiple heavy metals;
[0009] (5)活化还原：在氮气保护条件下，于800°C〜900°C条件下通入氢气还原，同时锻烧6〜12小时，即可。 [0009] (5) Activation reduction: under the protection of nitrogen, hydrogen reduction is carried out at 800° C. to 900° C., while calcining for 6 to 12 hours is sufficient.
[0010]所述蜂窝状含多种重金属的催化剂中各物质的含量以氧化物质量计，20〜32g氧化铅，8〜24g氧化钴，16〜24g氧化金，40〜52g氧化镍。 [0010] The content of each substance in the honeycomb-shaped catalyst containing multiple heavy metals is based on the mass of oxides, 20~32g lead oxide, 8~24g cobalt oxide, 16~24g gold oxide, 40~52g nickel oxide.
[0011] 本发明制备的催化剂应用方法为： [0011] The application method of the catalyst prepared by the present invention is:
[0012]将得到的催化剂安置在降解甲氟膦酸异丙酯气体的圆柱形池器内，安装厚度为2 〜4cm，每隔28cm安放一层，直至池顶。 [0012] The obtained catalyst is placed in a cylindrical tank for the degradation of isopropyl mefluorophosphonate gas, the installation thickness is 2 to 4 cm, and a layer is placed every 28 cm until the top of the tank.
[0013] 本发明的有益效果是： [0013] The beneficial effects of the present invention are:
[0014] (1)实现了催化剂在常温条件下把化工废气中的甲氟膦酸异丙酯直接分解的效果，无需特定条件下的高温高压，节约了成本； [0014] (1) The catalyst achieves the effect of directly decomposing isopropyl mefluorophosphonate in the chemical waste gas under normal temperature conditions, without requiring high temperature and high pressure under specific conditions, and saving costs;
[0015] (2)可直接把化工废气中的甲氟膦酸异丙酯还原成二氧化碳、水等物质，对环境不会造成二次污染； [0015] (2) It can directly reduce the isopropyl mefluorophosphonate in the chemical waste gas to carbon dioxide, water and other substances without causing secondary pollution to the environment;
[0016] (3)针对化工废气中气体的情况，选择了以铅、钴、金和镍为主的催化剂，针对性强，去除率局。 [0016] (3) In view of the gas in the chemical waste gas, the catalysts mainly based on lead, cobalt, gold and nickel were selected, which were highly targeted and the removal rate was low.
具体实施方式[0017] 制备方式Specific implementing manner[0017] preparation method
[0018]先对载体预处理:按载体预处理:按重量份数比计，取10份凹凸棒土、20份膨润土、 30份蛭石，加入10-15份海波石、20-40份明矾；同时按质量比加入与混合物质量比为1:3的水混合均匀，经烘干、粉碎、研磨成粉末，作为催化剂载体;接着配置浸溃液:按质量浓度比计，配成质量浓度分别为5〜8g/L硝酸铅，2〜3g/L氯化钴，4〜6g/L氰化金，10〜13g/L硝酸镍，5〜8g/L环戊二酸和1〜2g/L草酰乙酸溶液;按着载体与浸渍液体积比为丨：丨.5浸渍丨2〜 24小时;再在通氮气条件下于l〇5°C的烘箱中干燥4〜6小时;在负压为〇• 3MPa、温度为80(TC 〜85〇°C条件下焙烧I.5〜3_0小时，然后在负压为〇.3〜〇.5MPa常温条件下迅速冷却干燥， 即可得到蜂窝状含多种重金属的催化剂;最后在氮气保护条件下，于80(rc〜90(rc条件下通入氢气同时煅烧6〜12小时还原，即可。 [0018] First pretreatment of the carrier: Pretreatment of the carrier: In terms of parts by weight ratio, take 10 parts of attapulgite, 20 parts of bentonite, 30 parts of vermiculite, add 10-15 parts of hypolith, 20-40 parts Alum; At the same time, add water with a mass ratio of 1:3 according to the mass ratio and mix it evenly, then dry, pulverize, and grind into a powder as a catalyst carrier; then configure the immersion liquid: according to the mass concentration ratio, make the mass concentration Respectively 5~8g/L lead nitrate, 2~3g/L cobalt chloride, 4~6g/L gold cyanide, 10~13g/L nickel nitrate, 5~8g/L cycloglutaric acid and 1~2g/L L oxaloacetic acid solution; According to the volume ratio of the carrier to the dipping solution: 丨.5 immersion 丨2~24 hours; then dried in an oven at 105°C under nitrogen for 4~6 hours; in the negative The pressure is 0.3MPa, the temperature is 80 °C ~ 85〇 °C under the conditions of roasting for 1.5 ~ 3_0 hours, and then rapid cooling and drying under the negative pressure of 0.3 ~ 0.5MPa under normal temperature conditions, the honeycomb shape can be obtained A catalyst containing a variety of heavy metals; finally, under the protection of nitrogen, pass hydrogen at 80°rc~90°rc while calcining for 6~12 hours to reduce.
[0019] 应用方法[0019] Application method
[0020]将得到的催化剂安置在降解甲氟膦酸异丙酯气体的圆柱形池器内，安装厚度为2 〜4cm，每隔28cm安放一层，直至池顶。 [0020] The obtained catalyst is placed in a cylindrical tank for the degradation of isopropyl mefluorophosphonate gas, the installation thickness is 2 to 4 cm, and a layer is placed every 28 cm until the top of the tank.
[0021]实例1 [0021] Example 1
[0022]先对载体预处理:按载体预处理:按重量份数比计，取1〇份凹凸棒土、20份膨润土、 30份蛭石，加入I3份海波石、27份明矾；同时按质量比加入与混合物质量比为丨.5:4.5的水混合均匀，经烘干、粉碎、研磨成粉末，作为催化剂载体;接着配置浸渍液:按质量浓度比计， 配成质量浓度分别为6g/L硝酸铅，2.5g/L氯化钴，4.5g/L氰化金，1 lg/L硝酸镍，7g/L环戊二酸和1.5g/L草酰乙酸溶液;然后按着载体与浸渍液体积比为2:3浸溃丨2小时;再在通氮气条件下于105 °C的烘箱中干燥5小时;在负压为0.3MPa、温度为8301：条件下焙烧2.0小时，然后在负压为〇• 4MPa常温条件下迅速冷却干燥，即可得到蜂窝状含多种重金属的催化剂;最后仕级禾汆忏卜，于850 C条件下通入氢气同时煅烧8小时还原，上述蜂窝状含多种重金属的催化剂以氧化物质量计为24g氧化铅、llg氧化钴、18g氧化金、47§氧化镍;将得到的催化剂安置在降解甲氟膦酸异丙酯气体的圆柱形池器内，安装厚度为2cm，每隔28cm安放一层，直至池顶;使用该方法处理化工废气中的甲氟膦酸异丙酯，废气中的甲氟膦酸异丙酯浓度从1.7mg/m3降低到〇. 〇lmg/m3以下，去除率达到99 %以上;实现常温条件下化工废气中的甲氟膦酸异丙酯马上分解转化成C〇2、H2〇等物质。 [0022] First pretreatment of the carrier: Pretreatment according to the carrier: In terms of parts by weight ratio, take 10 parts of attapulgite, 20 parts of bentonite, 30 parts of vermiculite, add 13 parts of hypostone, 27 parts of alum; at the same time; Add water with a mass ratio of 丨.5:4.5 according to the mass ratio and mix uniformly, dry, pulverize, and grind into a powder as a catalyst carrier; then configure the impregnation solution: according to the mass concentration ratio, the mass concentrations are respectively 6g/L lead nitrate, 2.5g/L cobalt chloride, 4.5g/L gold cyanide, 1 lg/L nickel nitrate, 7g/L cycloglutaric acid and 1.5g/L oxaloacetic acid solution; then press the carrier The volume ratio to the impregnating solution is 2:3 for immersion丨2 hours; then it is dried in an oven at 105 °C under nitrogen for 5 hours; it is calcined for 2.0 hours under negative pressure of 0.3MPa and temperature of 8301, then Under the condition of negative pressure of 0.4MPa and normal temperature, it can be quickly cooled and dried to obtain a honeycomb-shaped catalyst containing multiple heavy metals; finally, the honeycomb is reduced by introducing hydrogen gas at 850 C and calcining for 8 hours. The catalyst containing multiple heavy metals is 24g lead oxide, 11g cobalt oxide, 18g gold oxide, 47§ nickel oxide in terms of oxide mass; the obtained catalyst is placed in a cylindrical tank that degrades isopropyl mefluorophosphonate gas. Inside, the installation thickness is 2cm, and one layer is placed every 28cm until the top of the pool; this method is used to treat the isopropyl mefluorophosphonate in the chemical waste gas, and the concentration of the isopropyl mefluorophosphonate in the waste gas is from 1.7mg/m3 Reduce to less than 0.01mg/m3, and the removal rate reaches more than 99%; realize that the isopropyl mefluorophosphonate in the chemical waste gas under normal temperature conditions is immediately decomposed and converted into Co2, H2〇 and other substances.
[0023]实例2 [0023] Example 2
[0024]先对载体预处理:按载体预处理:按重量份数比计，取1〇份凹凸棒土、20份膨润土、 30伤赔石，加入10份海波石、30份明帆；同时按质量比加入与混合物质量比为1:3的水混合均句，经烘干、粉碎、研磨成粉末，作为催化剂载体;接着配置浸渍液:按质量浓度比计，配成质量浓度分别为8g/L硝酸铅，3g/L氯化钴，6g/L氰化金，13g/L硝酸镍，8g/L环戊二酸和2g/L 草酰乙酸溶液;然后按着载体与浸渍液体积比为2:3浸渍18小时;再在通氮气条件下于1〇5 °C的烘箱中干燥6小时;在负压为〇• 3MPa、温度为85(TC条件下焙烧3.0小时，然后在负压为0.5MPa常温条件下迅速冷却干燥，即可得到蜂窝状含多种重金属的催化剂;最后在氮气保护条件下，于9〇(TC条件下通入氢气同时煅烧12小时还原，上述蜂窝状含多种重金属的催化剂以氧化物质量计为20g氧化铅、18g氧化钴、16g氧化金、52g氧化镍;将得到的催化剂安置在降解甲氟膦酸异丙酯气体的圆柱形池器内，安装厚度为4cm，每隔28cm安放一层，直至池顶;用该方法处理化工废气中的甲氟膦酸异丙酯，废气中的甲氟膦酸异丙酯浓度从2.7mg/ m3降低到0_01g/tn3以下，去除率达到99%以上;实现常温条件下化工废气中的甲氟膦酸异丙酯马上分解转化成C〇2、H2〇等物质。 [0024] First pretreatment of the carrier: Pretreatment according to the carrier: In terms of parts by weight ratio, take 10 parts of attapulgite, 20 parts of bentonite, 30 parts of damage stone, add 10 parts of Hypolite, 30 parts of Mingfan; At the same time, add the water mixing uniform sentence with a mass ratio of 1:3 to the mixture mass ratio according to the mass ratio, and then dry, pulverize, and grind into a powder as the catalyst carrier; then configure the impregnation liquid: according to the mass concentration ratio, the mass concentration is respectively 8g/L lead nitrate, 3g/L cobalt chloride, 6g/L gold cyanide, 13g/L nickel nitrate, 8g/L cycloglutaric acid and 2g/L oxaloacetic acid solution; then follow the volume of carrier and impregnation solution The ratio is 2:3 soaking for 18 hours; and then drying in an oven at 105 °C under nitrogen for 6 hours; baking at a negative pressure of 0.3MPa and a temperature of 85 °C for 3.0 hours, and then under negative pressure The pressure is 0.5MPa and the temperature is quickly cooled and dried to obtain a honeycomb-shaped catalyst containing multiple heavy metals; finally, under the protection of nitrogen, hydrogen gas is introduced at 90 °C while calcination is reduced for 12 hours. The honeycomb-shaped catalyst contains A variety of heavy metal catalysts are 20g lead oxide, 18g cobalt oxide, 16g gold oxide, 52g nickel oxide in terms of oxide mass; the obtained catalyst is placed in a cylindrical tank that degrades isopropyl mefluorophosphonate gas, and installed The thickness is 4cm, and one layer is placed every 28cm until the top of the pool; using this method to treat the isopropyl mefluorophosphonate in the chemical waste gas, the concentration of the isopropyl mefluorophosphonate in the waste gas is reduced from 2.7mg/m3 to 0_01g /tn3 or less, the removal rate reaches more than 99%; the isopropyl mefluorophosphonate in the chemical waste gas can be decomposed and converted into Co2, H2〇 and other substances immediately under normal temperature conditions.
[0025]实例3 [0025] Example 3
[0026]先对载体预处理:按载体预处理:按重量份数比计，取10份凹凸棒土、20份膨润土、 3〇份輕石，加入I5份海波石、25份明矾；同时按质量比加入与混合物质量比为2:6的水混合均勾，经供干、粉碎、研磨成粉末，作为催化剂载体;接着配置浸渍液:按质量浓度比计，配成质量浓度分别为5g/L硝酸铅，2g/L氯化钴，4g/L氰化金，10g/L硝酸镍，5g/L环戊二酸和lg/L 草酰乙酸溶液;然后按着载体与浸渍液体积比为2: 3浸渍24小时;再在通氮气条件下于105 °C的烘箱中干燥4小时;在负压为〇.3MPa、温度为8〇(rc条件下焙烧丨.5小时，然后在负压为0.3MPa常温条件下迅速冷却干燥，即可得到蜂窝状含多种重金属的催化剂;最后在氮气保护条件下，于8〇〇°C条件下通入氢气同时煅烧6小时还原，上述蜂窝状含多种重金属的催化剂以氧化物质量为计为2eg氧化铅、9g氧化钴、17g氧化金、48g氧化镍将得到的催化剂安置在降解甲氟膦酸异丙酯气体的圆柱形池器内，安装厚度为3cm，每隔28cm安放一层，直至池顶；用该方法处理化工废气中的甲氟膦酸异丙酯，废气中的甲氟膦酸异丙酯浓度从i.gmg/ m3降低到0_01mg/m3以下，去除率达到99%以上；实现常温条件下化工废气中的甲氟膦酸异丙酯马上分解转化成C〇2、H20等物质。 [0026] First pretreatment of the carrier: Pretreatment according to the carrier: In terms of parts by weight ratio, take 10 parts of attapulgite, 20 parts of bentonite, 30 parts of pumice, add 15 parts of hypolith, 25 parts of alum; at the same time; According to the mass ratio, add water with a mass ratio of 2:6 and mix it uniformly, and then dry, pulverize, and grind into a powder as a catalyst carrier; then configure the impregnating solution: according to the mass concentration ratio, the mass concentration is 5g respectively /L lead nitrate, 2g/L cobalt chloride, 4g/L gold cyanide, 10g/L nickel nitrate, 5g/L cycloglutaric acid and lg/L oxaloacetic acid solution; then according to the volume ratio of the carrier and the impregnating solution It is 2:3 immersion for 24 hours; then it is dried in an oven at 105 °C under nitrogen for 4 hours; it is roasted at a negative pressure of 0.3 MPa and a temperature of 80 (rc) for 丨. 5 hours, and then under negative pressure. The pressure is 0.3MPa and the temperature is quickly cooled and dried to obtain a honeycomb-shaped catalyst containing multiple heavy metals; finally, under the protection of nitrogen, hydrogen gas is introduced at 800°C and calcined for 6 hours to reduce the honeycomb shape. The catalyst containing multiple heavy metals is 2eg lead oxide, 9g cobalt oxide, 17g gold oxide, 48g nickel oxide based on the mass of the oxide. The installation thickness is 3cm, and one layer is placed every 28cm until the top of the pool; this method is used to treat the isopropyl mefluorophosphonate in the chemical waste gas, and the concentration of the isopropyl mefluorophosphonate in the waste gas is reduced from i.gmg/m3 Below 0_01mg/m3, the removal rate can reach more than 99%; the isopropyl mefluorophosphonate in the chemical waste gas can be decomposed and converted into Co2, H20 and other substances immediately under normal temperature conditions.
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