Study on optimization of coal gasification characteristics and integration of its low carbon combined power generation system

ZHANG Haoru; ZHANG Guoqiang; YU Jianhao; LIU Mingyu

doi:10.19666/j.rlfd.202403063

English Version Reader LoginJournal Login

您当前的位置：

首页 >

文章列表页 >

Study on optimization of coal gasification characteristics and integration of its low carbon combined power generation system

更新时间：2025-09-28

- Study on optimization of coal gasification characteristics and integration of its low carbon combined power generation system
- Thermal Power Generation Vol. 53, Issue 7, Pages: 91-100(2024)
- 作者机构：
  
  华北电力大学能源动力与机械工程学院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202403063
  CLC： TM611.3
- Published：2024
- 稿件说明：
移动端阅览
ZHANG Haoru, ZHANG Guoqiang, YU Jianhao, et al. Study on optimization of coal gasification characteristics and integration of its low carbon combined power generation system[J]. Thermal power generation, 2024, 53(7): 91-100.
DOI：

ZHANG Haoru, ZHANG Guoqiang, YU Jianhao, et al. Study on optimization of coal gasification characteristics and integration of its low carbon combined power generation system[J]. Thermal power generation, 2024, 53(7): 91-100. DOI： 10.19666/j.rlfd.202403063.

摘要

为了探究煤气化过程中氧气添加量和气化介质添加种类对于煤气化效率的影响，以及煤气化整体联合循环（IGCC）发电系统的集成优化，将以2种含氧量差别较大的煤种为例进行模拟分析。首先基于平衡反应模型对比了2煤种在不同总氧碳化学计量比（考虑煤自身含氧量）情况下对气化特性的影响结果；之后分析了分别添加CO_2与蒸汽作为气化介质时气化特性的变化规律，优化了其气化特性；最后在此基础上考虑CO_2捕获，提出了一种CO_2辅助气化、纯氧燃烧、部分烟气再循环的新型IGCC发电系统，并对其燃气轮机模型进行了模拟优化。结果表明：总氧碳化学计量比为0.47时煤气化的特性最佳；在此最佳总氧碳化学计量比条件下，添加CO_2作为煤气化流程气化介质，相比于传统添加蒸汽作为气化介质，可以使冷煤气效率提升约1.3%；基于此气化方法集成新型IGCC系统与传统燃烧前脱碳的IGCC发电方式相比，其净发电效率提高了约1.5%，?效率提高了约1.7%，该研究为设计低碳高效的IGCC发电系统提供了新思路。

Abstract

In order to investigate the effects of oxygen addition amount and type of gasification medium on coal gasification efficiency as well as the optimization of integrated gasification combined cycle(IGCC) power system

a simulation analysis is carried out by baking two kinds of coals with significant differences in oxygen content as the examples. Firstly

based on the equilibrium reaction model

the influence of oxygen carbonation stoichiometric ratios(considering the oxygen content of different coal types) on gasification characteristics for different coal types is compared. Then

the gasification characteristics are analyzed and optimized when CO2 and steam are added as gasification media respectively. On this basis and considering CO2 capture

a novel IGCC power cycle system with CO2-assisted gasification

pure oxygen combustion and partial gas recirculation is proposed and analyzed

and the gas turbine model is simulated and optimized. The results show that

the coal gasification performance is the best when the total oxygen-carbonation stoichiometric ratio is around 0.47. Under this condition

adding CO2 as the gasification medium can increase the efficiency of cold gas by about 1.3%

compared with that of the conventional way that adding steam as the gasification medium. Compared with the conventional IGCC power system with pre-combustion decarbonization

the net power efficiency of the proposed system increases by about 1.5% and the exergy efficiency increases by 1.7%

which provides a new idea for designing a low-carbon and efficient IGCC power generation system.

关键词

Keywords

references

Views

224

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

PRELIMINARY ANALYSIS OF PEAK-REGULATION CONFIGURATION AND ECONOMIC EFFICIENCY OF IGCC MULTIPLE CO-GENERATION UNITS

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

Performance evaluation of IGCC system integrated with chemical looping air separation

Influence of reducing oxygen purity of air separation system on the operation of IGCC power station

Research progress and prospects of advanced power generation technology under the goal of carbon emission peak and carbon neutrality

Related Author

LIAO Hai-yanShenhua Guohua Electric Power Research Institute

YU Xue-hai

CHEN Xiaoli1 1.College of Energy Science and Engineering

WANG Yang2

LI Zhenzhong2

WU Shaohua1

LIU Yaoxin1

XIANG Wenguo

Related Institution

Shenhua Guohua Electric Power Research Institute Co., Ltd

College of Energy Science and Engineering, Harbin Institute of Technology

National Power Plant Combustion Engineering Technology Research Center

School of Mechanical Engineering, Jinzhong University

School of Energy and Environment, Southeast University

AI问答

⁰