天然气蒸汽转化改造制乙二醇合成气方案的研究  

Study on revamping of NG steam reforming for production of synthetic glycol

作　　者：张骏驰[1] 

机构地区：[1]中国石化长城能源化工有限公司,北京市100120

出　　处：《炼油技术与工程》2015年第3期22-26,共5页Petroleum Refinery Engineering

摘　　要：针对国内某项目利用原先已有天然气蒸汽转化装置为新建200kt/a煤基合成气制乙二醇工业示范装置提供备用合成气源的改造要求,提出了纯氧配CO2和水蒸气、纯氧配CO2,纯氧等3种可行方案,通过对一、二段转化炉、烧嘴及炉体材料等指标进行对比,并对不同方案改造后各装置运行情况及实际生产能力、不同方案投资及技术经济指标进行了测算,最终选择纯氧配CO2和水蒸气方案。该方案可以实现稳定供应原料气的目的,装置可在不同工况下保持较高的乙二醇生产平均负荷(工况1,2为满负荷生产),合成氨产量可达1.1kt/d,方案总投资3 083.0万元,有项目和增量所得税后净利润分别为3.8,2.3亿元/a,投资回收期1.1a。该方案具有投资整体省、经济效益优的特点。改造后装置运行平稳、操作简单,达到增产乙二醇及合成氨的目的。To supply sufficient syngas for the new 200,000 TPY coal-based synthetic gas to glycol demonstration plant by revamping of an existing LNG steam reforming unit,three revamping schemes of combining O2,CO2 and steam are proposed respectively.The operations of 1 st-stage and 2nd-stage reformers,burners,and materials of the unit are analyzed and compared.Production capacity of various operation modes,investments,operation costs and technical economics are also calculated and compared.The scheme of combining O2,CO2 and steam is finally selected.Based on this recommended scheme,syngas can be stably supplied to reach a full glycol production load.The ammonia production can reach 1 100 t/d and the total investment is 30.83 million Yuan RMB.The net profit after tax with project and the incremental is 380 million and 230 million Yuan RMB respectively,and return of investment is 1.1 years.This scheme is stable in unit operation,easy in operation and increased in glycol and synthetic ammonia productions.

关 键 词：天然气蒸汽转化 合成氨 乙二醇 改造 技术经济指标 

分 类 号：TQ223.162[化学工程—有机化工]