整体煤气化联合循环发电(IGCC)热力特性分析  

Thermal characteristics analysis of integrated gasification combined cycle

作　　者：王治亚 何理[1] 张垚[1] 张诗悦[1] 李鹏[1] 

机构地区：[1]华北电力大学可再生能源学院,北京102206

出　　处：《节能》2016年第3期27-31,2,共5页Energy Conservation

基　　金：国家自然科学基金优秀青年基金项目(项目编号:51222906);国家自然科学基金项目(项目编号:41271540);教育部新世纪优秀人才支持计划(项目编号:NCET-13-0791);中央高校基本科研项目

摘　　要：为了实现对IGCC系统整体的热力特性分析,从而明确系统各部分能量损失,以便于针对系统各个子环节提出相应的节能措施。基于Aspen plus过程模拟软件,首先完成了对整体煤气化联合循环(IGCC)的整体模拟,然后采用火用分析法对系统各主要部分进行了热力特性分析。采用德士古气化炉对原煤浆进行气化,常温湿法脱硫以及三压再热锅炉回收燃气轮机乏汽,系统循环热效率达到42.8%,排烟温度仅为89℃,满足了电厂对热效率和排烟标准的要求。结果进一步表明,热量损失最大部分发生在粗煤气净化处(火用损率分别为11.2%、22.8%),其次是余热锅炉和气化炉,加快高温干法脱硫技术或炉内脱硫的研究,是进一步提升系统热效率的有效方向。In order to achieve the thermal characteristic of IGCC system,identify energy loss of each part and put forward the corresponding energy saving measures. In this paper,integrated gasification combined cycle( IGCC) was first completed based on Aspen plus software,then thermodynamic properties in major part were analyzed with the method of exergy analysis. Usingt Texaco gasifier for coal slurry gasification,normal temperature wet desulphurization and reheat boiler recycling exhaust energy,thermal efficiency is 42. 8% and exhaust temperature is 89℃,meeting standard requirements in power plant thermal efficiency. Results also show that the largest heat loss occurs in gas purification( exergy loss rate is 11. 2%,22. 8% respectively),followed by waste heat boiler and gasifier. It' s an effective measure to speed up high temperature dry process desulphurization technology or furnace desulfurization in improving thermal efficiency.

关 键 词：IGCC 德士古气化炉 热力分析 炯方法 联合循环 

分 类 号：TK323[动力工程及工程热物理—热能工程]