Ni/ZnO吸附剂上溶剂油的超深度吸附脱硫  

Ultra Deep Adsorptive Desulfurization of Solvent Oils by Ni/ZnO Adsorbent

作　　者：杨永兴[1] 张玉良[1] 王璐[1] 张永娜[1] 蒋宗轩[1] 李灿[1] 

机构地区：[1]中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连116023

出　　处：《石油化工》2008年第3期243-246,共4页Petrochemical Technology

基　　金：国家自然科学基金资助项目(20673114)

摘　　要：分别采用等体积浸渍法和共沉淀法制备了Ni质量分数为20%的Ni/ZnO吸附剂,采用N2吸附、X射线衍射和扫描电子显微镜研究了制备方法对Ni/ZnO吸附剂物化性质的影响,通过固定床吸附实验评价了Ni/ZnO吸附剂对溶剂油的吸附脱硫性能。实验结果表明,共沉淀法制备的Ni/ZnO吸附剂的比表面积和孔体积分别高达66.7m2/g和0.236cm3/g,吸附脱硫性能明显优于等体积浸渍法制备的Ni/ZnO吸附剂。在溶剂油中硫含量为145.0g/mL、吸附温度300℃、压力1.0MPa、进料液态空速6h-1、氢气与溶剂油体积比300(氢气体积为标准状况下的体积)的条件下,连续运转200h,共沉淀法制备的Ni/ZnO吸附剂对有机硫化物的脱除率始终大于90%,硫容量约为150mg/g。该吸附剂对原料有很好的适应性,可再生,多次循环使用后脱硫性能仅略有降低,具有潜在的工业应用价值。Ni/ZnO adsorbents were prepared by isochoric impregnation or co-precipitation. Effect of preparation method on physicochemical properties of Ni/ZnO adsorbent was studied by means of N2- sorption, XRD and SEM. Ni/ZnO adsorbents were used to remove organo-sulfur compounds from solvent oil in fixed-bed adsorption facilities. Ni/ZnO adsorbent prepared by co-precipitation has high specific surface area of 66.7 m^2/g and total pore volume of 0. 236 cm^3/g. Its sulfur removal activity is higher than that of Ni/ZnO prepared by impregnation. Under conditions of 300℃, 1.0 MPa, LHSV 6 h^-1, V（ H2 ） ： V（feed） 300（ volume of H2 at standard state） and sulfur content in feed 145.0 g/mL, desulfurization rate and adsorption capacity of Ni/ZnO adsorbent prepared by co-precipitation are more than 90% and 150 mg/g respectively in a continuous run of 200 h. The adsorbent has good adaptability to different solvent oils and can be regenerated.

关 键 词：镍 氧化锌 吸附剂 溶剂油 脱硫 

分 类 号：TQ032.41[化学工程]