苯加氢工艺尾气的利用探讨  

Discussion on Utilization of Tail Gas from Benzene Hydrogenation Process

作　　者：鲁华 杜建文[1] Lu Hua;Du Jianwen(Sinopec Baling Company,Yueyang Hunan 414014,China)

机构地区：[1]中国石化巴陵分公司,湖南岳阳414014

出　　处：《石油石化绿色低碳》2020年第6期55-58,共4页Green Petroleum & Petrochemicals

摘　　要：环己酮装置配套的苯加氢装置排放尾气中富含大量的有用物质氢气和少量的环己烷等有机物,环己烷等有机物质刺激性强,危害环境,因此需对外排尾气进行处理回收利用。探讨了国内含氢尾气回收利用的主流技术,如深冷回收净化、变压吸附提纯、活性炭吸附以及燃烧节能利用,分析了其特点、技术经济性以及可行性,结合苯加氢装置排放尾气的实际情况,提出了燃烧节能方案,该方案投资少,尾气作为燃烧炉燃料,充分利用了氢气及有机物热能,消除了尾气中的刺激性有机物,保护了环境及人身健康,具有环保和经济效益。The tail gas from the benzene hydrogenation unit in cyclohexanone plant contains a large amount of useful substances such as hydrogen and small amount of organic substances such as cyclohexane.Organic substances like cyclohexane are highly irritating and harmful to the environment and should be treated and recycled from the discharged tail gas.This paper discusses the domestic mainstream technologies for hydrogen-containing tail gas recovery and utilization,such as cryogenic recovery and purification,pressure swing adsorption purification,activated carbon adsorption and combustion energy-saving utilization,with their characteristics,technical economy and feasibility analyzed.Combined with the actual situation of tail gas emissions from benzene hydrogenation unit,a technical solution for combustion energy-saving utilization with a low investment is proposed,in which the discharge gas is used as a fuel for the combustion furnace to fully utilize the thermal energy of hydrogen and organic matters and eliminate the irritating organic matters in the discharge gas.The scheme can protect the environment and the health of employees,with good environmental and economic benefits.

关 键 词：苯加氢装置 苯加氢反应 尾气 回收利用技术 经济效益评价 

分 类 号：X78[环境科学与工程—环境工程]