生物滴滤塔降解异丁醛废气的应用研究  

Treatment of isobutyraldehyde-contaminated airstream by biotrickling filters

作　　者：庞栓林 张波 齐崴[2] 李治水 聂增来 何志敏[2] 苗淳 李云辉 PANG Shuan-lin;ZHANG Bo;QI Wei;LI Zhi-shui;NIE Zeng-lai;HE Zhi-min;MIAO Chun;LI Yun-hui(Tianjin Bohua Yongli Chemical Industry Co.Ltd.,Tianjin 300452,China;State Key Laboratory of Chemical Engineering,Tianjin University,Tianjin 300072,China)

机构地区：[1]天津渤化永利化工股份有限公司,天津300452 [2]天津大学化学工程联合国家重点实验室,天津300072

出　　处：《高校化学工程学报》2020年第4期1076-1084,共9页Journal of Chemical Engineering of Chinese Universities

基　　金：2017年度天津市企业博士后创新项目择优资助计划。

摘　　要：以异丁醛废气模拟丁辛醇装置的VOCs,对生物滴滤塔降解异丁醛的过程进行研究,旨在解决丁辛醇行业的VOCs污染问题。结果表明:生物滴滤塔系统的挂膜周期约为2周;循环营养液流速在1.1~10.2 m×h^-1变化时,对异丁醛的脱除效率基本无影响;由于鼠李糖脂的存在,当循环营养液流速大于13.6 m×h^-1时,生物滴滤塔系统内出现大量泡沫,导致异丁醛的脱除效率迅速下降;同时,鼠李糖脂也促进生物滴滤塔系统性能的提升,当循环营养液流速为4.5 m×h^-1、气相停留时间为40 s时,ECmax可达158 g×m^-3×h^-1,体现了生物滴滤塔在丁辛醇装置VOCs治理中的工业化应用潜力。The performance of biotrickling filters(BTFs)on VOCs(isobutyraldehyde as a model VOC)removal from hydroformylation(OXO)units was studied to solve VOCs problems in OXO industry.The results indicate that approximately two weeks were required for acclimating of microorganisms.The removal efficiency was constant when the liquid recirculation rate(LRR)varied from 1.1 m·h^-1 to 10.2 m·h^-1.Due to the presence of rhamnolipids in the liquid recirculation,LRR over 13.6 m·h^-1 led to great foam in BTFs,which results in a reduction of removal efficiency.Nevertheless,rhamnolipids promote the elimination capacity of BTFs up to 158 g×m^-3×h^-1 at a constant LRR of 4.5 m·h^-1 and an empty bed retention time(EBRT)of 40 s.Therefore,BTFs show industrial application potential on VOCs removal in OXO industry.

关 键 词：生物滴滤塔 异丁醛 循环营养液流速 空床停留时间 鼠李糖脂 

分 类 号：TQ09[化学工程] Q939.9[生物学—微生物学]