基于夹点分析的氢气提纯原料优化研究  

Research on Feed Optimization of Hydrogen Purification Based on Hydrogen Pinch Analysis

作　　者：高宇飞 张瑞桥 GAO Yu-fei;ZHANG Rui-qiao(Guilin University of Electronic Technology,Guilin Guangxi 541004,China;Sinopec Beihai Company,Beihai Guangxi 536000,China)

机构地区：[1]桂林电子科技大学,广西桂林541004 [2]中国石化北海炼化有限责任公司,广西北海536000

出　　处：《当代化工》2023年第8期2005-2009,共5页Contemporary Chemical Industry

摘　　要：针对某炼厂的氢气系统进行氢夹点分析,发现该系统存在夹点以下氢气组分返混的问题。结合炼厂具体情况,VPSA装置的原料气氢气含量较低,具备进一步提升的潜力。以氢夹点分析为指导,提供氢夹点以下氢气提纯的原料优化方法,并提供增加VPSA装置原料氢气含量的具体优化方案。利用Aspen Plus软件定量计算方案尾气压缩机的电耗,并结合氢气提纯量的变化,为各优化方案节氢、节电效益提供数据支撑。经计算,优化方案可进一步回收氢气1120 Nm^(3)·h^(-1),同时还可节电807 kW·h,经济效益显著。The hydrogen system of a refinery was analyzed by hydrogen pinch technology,it was found that there was the backmixing problem of hydrogen components below the pinch point.Combined with the specific refinery,VPSA had low content of hydrogen in feed,and had the potential for further improvement.Under the guidance of hydrogen pinch analysis,the raw material optimization method of hydrogen purification below hydrogen pinch point was provided,and the specific optimization scheme of increasing hydrogen content in raw material of VPSA device was provided.Aspen Plus software was used to quantitatively calculate the power consumption of the tail gas compressor of the scheme,and combining with the change of hydrogen purification quantity,it provided data support for the hydrogen and power saving benefits of each optimization scheme.After calculation,the optimized scheme can further recover1120 Nm^(3)·h^(-1)hydrogen,and also save 807 kW·h power,which has significant economic benefits.

关 键 词：氢气系统优化 氢夹点分析 氢气提纯 Aspen Plus 

分 类 号：TQ116.2[化学工程—无机化工]