以双燃料重整利用气化显热的IGCC系统  

A dual-fuel IGCC system with methane reforming for sensible heat utilization

作　　者：高健[1] 倪维斗[1] 李政[1] 

机构地区：[1]清华大学热能工程系,北京100084

出　　处：《燃气轮机技术》2008年第1期13-17,共5页Gas Turbine Technology

基　　金：国家重点基础研究发展计划项目(2005CB221207);欧盟COACH项目

摘　　要：IGCC系统中,气化炉出口的合成气温度很高,这部分显热如何利用一直是困扰IGCC进一步发展的难题。本文根据"温度对口"的原则,提出了一种以双燃料重整利用煤气化显热的联合循环发电系统,该系统通过重整反应实现了煤和天然气的综合利用。利用气化炉出口的高温煤气的显热作为天然气/水蒸气重整反应的高温反应热,把煤气的热能转变为合成气的化学能进行回收。研究结果表明,相比于同等条件下的参比分产系统,新系统效率可提高约1个百分点。In IGCC system, there is a lot of sensible heat of syngas from gasifier outlet and is difficult to be utilized, which is an obstacle of IGCC development. In this paper, a dual- fuel IGCC system with methane reforming is proposed. The syngas from coal gasifier outlet with high temperature can provide heat to methane/steam reforming, the high temperature syngas is cooled down and the sensible heat of syngas is partly converted to chemical energy of reformed gas . Then both gasifier syngas and reformed syngas are sent to combustor of gas turbine. The results show that compared with reference system at the same operation condition, the new system＇ s net electrical generation efficiency can be increased by about 1 percentage point.

关 键 词：双燃料 天然气/水蒸气重整 IGCC系统 

分 类 号：TM611.31[电气工程—电力系统及自动化]