天然气化工2016，Vol.41Issue(6)：95-97,3.
电石炉尾气净化分离用于合成乙二醇的新工艺
Novel purification and separation process of calcium carbide furnace tail gas for synthesis of ethylene glycol
肖二飞 1雷军 1刘应杰 1刘华伟 1钱胜涛 1吕明 1成春喜 1王先厚 1孔渝华1
作者信息
- 1. 华烁科技股份有限公司，工业气体净化精制与利用湖北省重点实验室，湖北 武汉 430074
- 折叠
摘要
Abstract
Calcium carbide furnace tail gas composition is complicated, containing CO of about 70%-90%, H2 of about 8%-15%by volume and many impurities, such as N2, CH4, S, P, As, F, HCN, O2, Cl and unsaturated hydrocarbons. A novel process for purification and separation of this tail gas to obtain the feedgases CO and H2 which could be used for synthesizing ethylene glycol by the oxalic ester hydrogenation route is proposed, which includes the follow steps: (1) pre-purifying the gas from the calcium carbide furnace tail gas holder after compression; (2) deeply removing the compounds of sulfur, phosphorus, arsenic, fluorine and chlorine, HCN, metal carbonyl compounds and O2; (3) one part of the gas from (2) goes to produce the high purity CO through pressure swing adsorption (CO-PSA) separation and then dehydrogenation;(4) the other part of the gas from (2) is mixed with the CO-PSA desorption gas to produce the high purity H2 through high temperature and low temperature two stage water-gas shift reactions to converse CO to below 0.3% by volume, then removing CO2 by PSA and purifying H2 by H2-PSA. Using thus produced high purity CO and H2 to produce ethylene glycol has lower investment and product cost than using the CO and H2 directly produced from coal.关键词
电石炉尾气/净化分离/一氧化碳/氢气/乙二醇Key words
calcium carbide furnace tail gas/purification and separation/carbon monoxide/hydrogen/ethylene glycol分类
化学工程引用本文复制引用
肖二飞,雷军,刘应杰,刘华伟,钱胜涛,吕明,成春喜,王先厚,孔渝华..电石炉尾气净化分离用于合成乙二醇的新工艺[J].天然气化工,2016,41(6):95-97,3.
