Ni载体整体煤气化链式燃烧联合循环性能

XIANG Wenguo; Di Tengteng

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Ni载体整体煤气化链式燃烧联合循环性能

更新时间：2025-12-10

- Ni载体整体煤气化链式燃烧联合循环性能
- CIESC Journal Issue 7, (2007)
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- Online First：05 July 2007，
  
  Published：05 July 2007
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XIANG Wenguo, Di Tengteng. Ni载体整体煤气化链式燃烧联合循环性能[J]. CIESC Journal, 2007, (7).
DOI：

XIANG Wenguo, Di Tengteng. Ni载体整体煤气化链式燃烧联合循环性能[J]. CIESC Journal, 2007, (7). DOI：

摘要

本文将具有分离CO2的链式燃烧技术与整体煤气化联合循环(IGCC)技术结合，构成整体煤气化链式燃烧联合循环系统，对系统性能进行了模拟研究。结果表明，采用德士古气化工艺、空气反应器出口温度1200℃，NiO/NiAl2O4作载氧体，压气机压比17、补燃后透平初温(TIT)1350℃、冷却空气量12％时，系统净效率39.61% HHV（41.55%LHV），CO2排放量126 g·kW-1·h-1。补燃温度1350℃，空气反应器温度由1000℃升高到1200℃，CO2的回收率提高约23％，系统效率由40.3%降低到39.61％；补燃温度由1200℃提高到1500℃，系统净效率由37.4%增加到40.8%，CO2的排放量从3g·kW-1·h-1增加到202 g·kW-1·h-1；补燃温度一定，压比增大，系统比功减小，CO2排放量增加，效率先增大后减小，存在最佳压比.

Abstract

Chemical looping combustion (CLC) offers a possibility of separating the greenhouse gas CO2.An integrated gasification combined cycle based on CLC is discussed in this paper.In the system

NiO/NiAl2O4 is used as the CLC oxygen carrier and Texaco gasification process is selected.The system performance is simulated by using ASPEN software tool.The system efficiency is 39.61%HHV (41.55%LHV) and CO2 emission is 126 g·kW-1·h-1

assuming compressor pressure ratio 17

air reactor outlet temperature 1200℃

turbine inlet temperature (TIT) 1350℃ after supplementary firing

and cooling air fraction 12%.At TIT 1350℃

CO2 capture rate increases by about 23% and system efficiency decreases from 40.3% to 39.61% when the air reactor outlet temperature rises from 1000℃ to 1200℃.With the increase of TIT after supplementary firing from 1200℃ to 1500℃

system efficiency increases from 37.4% to 40.8% and CO2 emission rises from 3 g·kW-1·h-1 to 202 g·kW-1·h1.At a specific TIT there exits an optimum pressure ratio and the optimum pressure ratio goes up as TIT rises.

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