炼油厂VOCs吸收-吸附耦合工艺研究  

Study on refinery VOCs absorption-adsorption coupling process

作　　者：刘洋 王新 刘忠生 李宝忠 马锐 Liu Yang;Wang Xin;Liu Zhongsheng;Li Baozhong;Ma Rui(SINOPEC Dalian Research Institute of Petroleum and Petrochemicals,Dalian,Liaoning 116041)

机构地区：[1]中国石油化工股份有限公司大连石油化工研究院,辽宁省大连市116041

出　　处：《炼油技术与工程》2022年第5期6-10,共5页Petroleum Refinery Engineering

基　　金：国家自然科学基金联合基金项目(U20B6004);中国石化科技部项目(总合-HB2012)。

摘　　要：采用负载浸渍法,将活性金属铜引入活性炭孔道内部,并且对其进行N_(2)吸附-脱附及透射电镜表征。使用改性后的AC-2活性炭吸附剂吸附脱除苯模型化合物,当入口苯质量浓度为6.5 g/m^(3)、体积空速为1000 h^(-1)、吸附温度为20℃时,穿透时间为13 h,吸附量为132 g。经过8个吸附-再生周期,AC-2活性炭吸附剂仍可将固定床吸附器出口苯质量浓度控制在30mg/m^(3)以下。使用改性后的AC-2活性炭吸附剂吸收-吸附脱除石脑油中的VOCs(挥发性有机物),在进气口VOCs质量浓度为100~150 g/m^(3)、体积空速为1000 h^(-1)、吸附温度为20℃的条件下,其穿透时间为4.5 h。经过4个柴油吸收-吸附-再生周期,AC-2活性炭吸附剂仍维持较稳定的脱VOCs性能。热脱附模型相较于常温脱附模式,更加适用于活性炭吸附剂的脱附再生。The immobilization of the active metal copper into activated carbon support is carried out with impregnation methods,and is characterized by N_(2) absorption-adsorption and transmission electron microscope.The modified AC-2 activated carbon is used to adsorb benzene model compounds.When the inlet benzene concentration is 6.5 g/m^(3),the space velocity is 1000 h^(-1),and the adsorption temperature is 20℃,the breakthrough time and adsorption capacity is 13 h and 132 g.After eight adsorption-regeneration cycles,AC-2 activated carbon adsorbent can still control the outlet concentration of fixed bed adsorber below 30 mg/m^(3).The modified AC-2 activated carbon is also used to absorb and adsorb naphtha volatile VOCs.When the VOCs concentration at the air inlet is 100~150 g/m^(3),the space velocity is 1000 h^(-1) and the adsorption temperature is 20℃,the breakthrough time is 4.5 h.After four diesel absorption-adsorption-regeneration cycles,AC-2 activated carbon can still maintain a relatively stable VOCs removal performance.Compared with the normal temperature desorption model,the thermal desorption model is more suitable for the desorption and regeneration of activated carbon adsorbent.

关 键 词：活性炭吸附剂 吸附 吸收-吸附 再生 

分 类 号：TQ424.1[化学工程] X742[环境科学与工程—环境工程]