INFLUENCE OF LOAD VARIATION CONCERNING TWO-STAGE COAL-WATER SLURRY GASIFIER UPON PERFORMANCE OF THE IGCC SYSTEM

LIU Yaoxin1; WU Shaohua1; LI Zhenzhong2; WANG Yang2; CHEN Xiaoli1 1.College of Energy Science and Engineering

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INFLUENCE OF LOAD VARIATION CONCERNING TWO-STAGE COAL-WATER SLURRY GASIFIER UPON PERFORMANCE OF THE IGCC SYSTEM

更新时间：2025-09-28

- INFLUENCE OF LOAD VARIATION CONCERNING TWO-STAGE COAL-WATER SLURRY GASIFIER UPON PERFORMANCE OF THE IGCC SYSTEM
- Thermal Power Generation Vol. 41, Issue 6, Pages: 14-18(2012)
- 作者机构：
  
  1. 哈尔滨工业大学能源科学与工程学院
  2. 国家电站燃烧工程技术研究中心
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK473
- Published：2012
- 稿件说明：
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LIU Yaoxin1, WU Shaohua1, LI Zhenzhong2, et al. INFLUENCE OF LOAD VARIATION CONCERNING TWO-STAGE COAL-WATER SLURRY GASIFIER UPON PERFORMANCE OF THE IGCC SYSTEM[J]. Thermal power generation, 2012, 41(6): 14-18.
DOI：

LIU Yaoxin1, WU Shaohua1, LI Zhenzhong2, et al. INFLUENCE OF LOAD VARIATION CONCERNING TWO-STAGE COAL-WATER SLURRY GASIFIER UPON PERFORMANCE OF THE IGCC SYSTEM[J]. Thermal power generation, 2012, 41(6): 14-18. DOI：

摘要

采用ThermoFlex软件建立了基于两段式水煤浆气化技术的200MW级整体煤气化联合循环(IGCC)系统模型

研究了气化炉负荷变化对燃气轮机组、汽轮机组和IGCC系统性能的影响。结果表明

气化炉在较高负荷(100%、90%)工况下运行时

提高其二段给煤率γsc可以提高主蒸汽和再热蒸汽温度

降低厂用电率

使系统发电效率和供电效率得到提高;气化炉在低负荷(80%、70%、60%)工况下运行时

其γsc的变化对燃汽轮机(燃机)入口温度、排气温度、燃机发电率的影响较小

IGCC系统发电效率和供电效率随二段给煤率的升高呈先升高后降低的趋势

此时系统性能优势不明显。

Abstract

By adopting the ThermoFlex software

a model of a 200 MW level IGCC system based on two-stage coal-water slurry gasifier has been established

and the influence of load variation of the gasifier upon the gas turbine system

the steam turbine system

and the IGCC system being investigated.The results of investigation show that the mcreasing of secondary stage coal feed ratio(Ysc) can enhance the temperature of main steam and reheated steam

reducing the auxiliary power rate

making the power generating efficiency and power-supplying efficiency of the system to be heightened

as the gasifier is working under high load(100%

90%) condition;but in case of the gasifier working under lower load(80%

70%

60%)

the increasing of secondary stage coal feed ratio has few infuence upon the inlet temperature of gas turbine

the temperature of discharged gas

and the power-gene rating efficiency of gas turbine;along with increasing the secondary stage coal feed ratio

the power-generating efficiency and power-supplying efficiency of the IGCC system have a tendency of increasing at first and then decreasing

at this time

the superiority of system performance isn't remarkable.

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