近年来,挥发性有机溶剂（VOCs）和油气的排放程度日趋严重,全球每年有3%的油气散失到空气中,数量超过1亿吨,我国每年排放到大气中的VOCs达1 000万吨,对其回收再利用不仅可以减轻环境污染,还可以节约能源和增加经济效益。因此,利用高丁烷工作容量（简称BWC）颗粒活性炭（柱状或球状）吸附回收有机溶剂和油气的工艺和装备研究是当前的一个热点。通过大量实验研究发现,磷酸法木质颗粒活性炭因其具有发达的中微孔结构,相比物理法与煤质颗粒活性炭,具有较高的BWC。此类用途颗粒活性炭是20世纪70年代后期由日本、美国、联邦德国和苏联等工业发达的国家研制开发成功的一种高档次活性炭新品种,80年代后期逐渐进入工业化阶段。国内主要依靠进口此类用途颗粒活性炭,%In recent years, the emission of volatile organic compounds and oil vapor has become more and more serious, e.g. over 0.1 billion tons （3 % of the global oil amount mined） of oil vapor as well as 10 million tons of VOCs in China emitting into the air every year. The recovery of VOCs and oil vapor could not only mitigate environmental pollution but also save energy and increase economic benefit. Therefore, the study on technology and equipments of recovering VOCs and oil vapor by granular activated carbon （GAC） with high butane working capacity （BWC） is a hot topic currently.
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