某化工企业废气治理工艺研究
|
摘要
针对某化工企业产甲基异噻唑啉酮(水处理剂)车间废气污染情况,总结产生乙酸乙酯等废气污染特点,对处理工艺提标改造,采用"预处理+活性炭吸附+催化燃烧+活性炭脱附"的综合治理技术控制废气污染,实现了活性炭原位再生,且废气达标排放。工艺设计风量为15000m~3/h,乙酸乙酯的浓度为130mg/m~3。工程总投资约35～58万元,吸附-脱附装置活性炭耗材费用合计4.2万元/年,催化剂耗材费合计3.6万元/年,运行费用约12.8万元。相关监测数据表明,废气治理工艺在设备正常运行时可确保污染物达标排放。乙酸乙酯排放浓度满足《大气污染物综合排放标准》DB31/933-2015中乙酸乙酯排放浓度低于50 mg/m~3的限值,该工程具有良好的经济效益和环境效益。
Combined with the pollution of the waste gas produced by a chemical enterprise in the production of methyl isothiazolinone(water treatment agent), the characteristics of waste gas pollution such as ethyl acetate are summarized, and the treatment process is upgraded. The comprehensive treatment technology of "pretreatment + activated carbon adsorption + catalytic combustion + activated carbon desorption" is used to control the exhaust gas pollution, and the in-situ regeneration of activated carbon is realized, and the exhaust gas reaches the standard discharge. The process design air volume is 15000 m~3/h, and the concentration of ethyl acetate is 100 mg/m~3. The adsorption-desorption device has a total cost of 24,000 yuan/year for activated carbon consumables, a total of 18,000 yuan/year for catalyst consumables, and an operating cost of about 117,000 yuan. Relevant monitoring data indicates that the exhaust gas treatment process can ensure that pollutants meet the standard discharge when the equipment is in normal operation. The project has good economic and environmental benefits.
Combined with the pollution of the waste gas produced by a chemical enterprise in the production of methyl isothiazolinone(water treatment agent), the characteristics of waste gas pollution such as ethyl acetate are summarized, and the treatment process is upgraded. The comprehensive treatment technology of "pretreatment + activated carbon adsorption + catalytic combustion + activated carbon desorption" is used to control the exhaust gas pollution, and the in-situ regeneration of activated carbon is realized, and the exhaust gas reaches the standard discharge. The process design air volume is 15000 m~3/h, and the concentration of ethyl acetate is 100 mg/m~3. The adsorption-desorption device has a total cost of 24,000 yuan/year for activated carbon consumables, a total of 18,000 yuan/year for catalyst consumables, and an operating cost of about 117,000 yuan. Relevant monitoring data indicates that the exhaust gas treatment process can ensure that pollutants meet the standard discharge when the equipment is in normal operation. The project has good economic and environmental benefits.
引文
[1]汤华．化工企业废气治理工程实例探讨[J]．科技创新与应用，2017(15):167.
[2]孙冠，骆骅，李杨．化工企业废气治理研究进展[J]．山东化工，2014,43(01):46-47+49.
[3]何锐，陈金育，何亮亮．某化工企业TMPTA车间废气治理系统改造工程实例[J]．环境科技，2017,30(01):43-46.
[4]赵海霞．化工企业废气综合治理工程设计探讨[J]．化工管理，2016(03):123.
[5]刘芝林．某化工生产企业废气综合治理工程设计[D]．浙江大学，2015.
[6]周灵君．挥发性有机物(VOCs)吸附回收技术进展[J]．广州化工，2016,44(01):6-7+15.
[7]赖文锋．活性炭吸附剂的制备和其在吸附挥发性有机物中的应用[D]．浙江工业大学，2014.
[8]Cao X-Q,Zhang H,Huang X-M.Combination process of microwave desorption-catalytic combustion for toluene treatment[J]. Environmental Science,2013,34(7):2546-51.
[9]吕晓宁．催化燃烧法处理污水处理场有机废气[J]．环境与发展，2018,30(10):65+67.
[10]何滢滢，潘涌璋．吸附浓缩——催化燃烧法处理有机废气[J]．环境工程，1997(04):34-36.
[11]李蕾，王学华，王浩，等．吸附浓缩-催化燃烧工艺处理低浓度大风量有机废气[J]．环境工程学报，2015,9(11):5555-5561.
[12]胡超．吸附浓缩—催化燃烧法处理VOCs废气探讨[J]．绿色科技，2019(12):135-136.
[13]杨远盛．吸附浓缩—催化燃烧法处理VOCs废气实例[J]．工业设计，2012(02):141-142.
[14]林志雄．新型光触媒蜂窝活性炭技术在印刷行业治理VOCs应用[J]．节能与环保，2019(04):62-63.
[15]曾旋．吸附浓缩—催化燃烧处理二甲苯废气的工艺优化[D]．华中科技大学，2018.
[2]孙冠，骆骅，李杨．化工企业废气治理研究进展[J]．山东化工，2014,43(01):46-47+49.
[3]何锐，陈金育，何亮亮．某化工企业TMPTA车间废气治理系统改造工程实例[J]．环境科技，2017,30(01):43-46.
[4]赵海霞．化工企业废气综合治理工程设计探讨[J]．化工管理，2016(03):123.
[5]刘芝林．某化工生产企业废气综合治理工程设计[D]．浙江大学，2015.
[6]周灵君．挥发性有机物(VOCs)吸附回收技术进展[J]．广州化工，2016,44(01):6-7+15.
[7]赖文锋．活性炭吸附剂的制备和其在吸附挥发性有机物中的应用[D]．浙江工业大学，2014.
[8]Cao X-Q,Zhang H,Huang X-M.Combination process of microwave desorption-catalytic combustion for toluene treatment[J]. Environmental Science,2013,34(7):2546-51.
[9]吕晓宁．催化燃烧法处理污水处理场有机废气[J]．环境与发展，2018,30(10):65+67.
[10]何滢滢，潘涌璋．吸附浓缩——催化燃烧法处理有机废气[J]．环境工程，1997(04):34-36.
[11]李蕾，王学华，王浩，等．吸附浓缩-催化燃烧工艺处理低浓度大风量有机废气[J]．环境工程学报，2015,9(11):5555-5561.
[12]胡超．吸附浓缩—催化燃烧法处理VOCs废气探讨[J]．绿色科技，2019(12):135-136.
[13]杨远盛．吸附浓缩—催化燃烧法处理VOCs废气实例[J]．工业设计，2012(02):141-142.
[14]林志雄．新型光触媒蜂窝活性炭技术在印刷行业治理VOCs应用[J]．节能与环保，2019(04):62-63.
[15]曾旋．吸附浓缩—催化燃烧处理二甲苯废气的工艺优化[D]．华中科技大学，2018.