微湿气体法处理Y型分子筛对FCC汽油吸附脱硫的影响

以Y型分子筛为载体、不同质量分数的硝酸镍为活性组分,采用浸渍法制得一种FCC汽油吸附脱硫吸附剂。在不同温度下用微湿气体法处理载体,得到比表面积为780m2/g、孔径为0.742nm且孔结构较为均匀的吸附剂。利用微型反应装置,在不同空速下,考察吸附剂吸附脱硫的活性。结果表明:硝酸镍质量分数为15%,对载体的处理温度为950℃,空速为0.5h-1时,与未经处理的吸附剂相比,微湿气体处理的吸附剂具有较好的吸附活性,吸附脱硫率达到89%。

Effect of Moisture Treatment of Y Zeolite on Desulfurization of FCC Gasoline

With the Y-zeolite as a carrier,nickel nitrate as the active component,a sorbent for FCC gasoline adsorption desulfurization is prepared.Treated with moist gas under the different temperature,the prepared adsorbent has a specific surface area 780m2/g and aperture about 0.742nm.The prepared sorbent are used for FCC gasoline desulfurization in the micro-reactor,the effects of space velocity on adsorbent activity of adsorption desulfurization are investigated.The results show that the adsorbent has good activity and its adsorption desulfurization rate reaches 89% when the active component content in the weight of Y-zeolite is 15%and treated at 950℃,and space velocity is 0.5h-1.