吸附+吸收油气回收工艺实践及优势分析

Practice and advantages analysis on adsorption & absorption oil vapor recovery technology

吸附+吸收油气回收工艺是目前油库及装卸系统应用最广的成熟的油气回收技术,相对于其他油气回收技术,该工艺具有能耗低、处理量大及吸收效率高等优势,是汽油、铁路、装车及大型储运企业的首选。中国石化西安石化分公司为满足环境保护及安全卫生的要求,于2014年建成处理能力为750 m3/h(0℃,101.325 k Pa)的铁路油气回收系统,采用吸附+吸收工艺。该系统由伸缩囊密闭装车鹤管及油气回收装置组成,自投用以来,取得良好的经济及环保效益。该文主要根据该装置运行实际情况,结合工艺管理的实际情况,为企业选择工艺提供指导性建议;同时,对可能存在的问题提出改进意见。

Oil vapor recovery process of adsorption & absorption is a mature oil vapor recovery technology most widely used in oil depots and handling systems at present. Compared with other oil and gas recovery technologies, this process with advantages such as low energy- consumption, high handing capacity and high absorption efficiency has become the preferred technology by railway loading of gasoline and large storage and transportation enterprises. In order to meet the requirements on environmental protection, safety and health, Sinopec Xi' an Petrochemical Com-pany established a railway oil vapor recovery system with a processing capacity of 750 m3/h(0 ℃, 101.325 k Pa) in 2014, which applied the process of adsorption + absorption.The system consists of the closed bellows- type loading crane- form pipeline and oil vapor recovery equipment. Favorable economic and environmental benefits have been achieved since the system was put into service. According to the practical operation of the system and the practical situation of process management, some guiding suggestions on process selection for enterprises have been provided, and meanwhile some improvement suggestions on possible problems have been given in this paper.