摘要
系统地考察了改性13X沸石分子筛（M-13X）蜂窝转轮对甲苯废气的吸附性能，探讨了运行参数和进气参数对转轮吸附的影响规律．结果表明，M-13X分子筛具有良好的抗湿性，转速、再生风温度过高或过低均会降低系统去除率，合适的浓缩比应兼顾效率与能耗．对于进气浓度100mg·m^-3，进气流速2m·s^-1的甲苯废气，推荐运行参数为再生风温度180℃，转速2．8～5r·h^-1，浓缩比8～12，在该运行参数下去除效率均维持在90％以上．该研究为M-13X蜂窝转轮工业应用提供设计经验及运行参数，对于高浓度废气，应控制较低的进气流速，同时加快转速、提高脱附热量以满足去除效果．
The removal of toluene from waste gas by Honeycomb Adsorption Rotor with modified 13X molecular sieves was systematically investigated. The effects of the rotor operating parameters and the feed gas parameters on the adsorption efficiency were clarified. The experimental results indicated that the honeycomb adsorption rotor had a good humidity resistance. The removal efficiency of honeycomb adsorption rotor achieved the maximal value with optimal rotor speed and optimal generation air temperature. Moreover, for an appropriate flow rate ratio the removal efficiency and energy consumption should be taken into account. When the recommended operating parameters were regeneration air temperature of 180℃ , rotor speed of 2.8-5 r. h^-1 , flow rate ratio of 8-12, the removal efficiency kept over 90% for the toluene gas with concentration of 100 mg·m^-3 and inlet velocity of 2 m.s-1. The research provided design experience and operating parameters for industrial application of honeycomb adsorption rotor. It showed that lower empty bed velocity, faster rotor speed and higher temperature were necessary to purify organic waste gases of higher concentrations.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2013年第12期4684-4688,共5页
Environmental Science
关键词
吸附
蜂窝吸附转轮
甲苯
改性分子筛
有机废气
adsorption
honeycomb adsorption rotor
toluene
modified molecular sieve
organic waste gas
