活性炭吸附汽油蒸气动力学性能测定

Kinetics Property Determination of Activated Carbon Adsorption Gasoline Vapor

在蒸发油气吸附回收处理技术中,将活性炭作为首选吸附剂,重点考察研究其吸附汽油蒸气动力学性能。试验结果表明,活性炭的饱和吸附率随吸附操作温度增大而降低,新鲜活性炭在20C时的饱和吸附率高达34％,30C时为30％,活性炭吸附存在劣化度,再生难彻底,影响其使用寿命。活性炭吸附油气速度较快,不同活性炭的吸附饱利和时间略有差别,一般在40min内已经达到或基本接近饱和活性炭吸附塔压降很小,总平均为0.142Pa

The problem of petroleum (gasoline) evaporation loss (PEL) is a much important research topic in oil storage & transportation and environmental protection as well at home and abroard. As an effective measures to reduce PEL.the technology of adsorption recovery to gasoline vapor represents a main orientation in present research work. As an effective adsorbent ,activated carbon was first selected to investigate and study on its kinetics property of adsorbing gasoline vapor. The result showed that activated carbon adsorp-tivity decreases with the rise in adsorption operation temperature and in circulation adsorption and that fresh activated carbon adsorptivity is up to 0.34 at 20 C and to 0. 30 at 30 C. The result also showed that adsorption speed of activated carbon to gasoline vapor is quick and adsorption saturation time is about 40 min and that differential pressure of adsorption tower is low and usually between 0.10-0.19 Pa/cm and a total average value of 0.142 Pa/cm.