集成余热回收的超临界二氧化碳燃煤发电系统研究

张旭伟; 李红智; 乔永强; 杨玉; 姚明宇

doi:10.19666/j.rlfd.202003158

English

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集成余热回收的超临界二氧化碳燃煤发电系统研究

热力发电 2020年49卷第12期页码：17-21

超临界二氧化碳循环发电技术 | 更新时间：2025-09-28

- 集成余热回收的超临界二氧化碳燃煤发电系统研究
- Study on supercritical carbon dioxide coal-fired power generation system integrated with waste heat recovery
- 作者机构：
  
  西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202003158
  中图分类号： TK11
- 网络出版：2020-12-01，
  
  纸质出版：2020
- 稿件说明：
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张旭伟, 李红智, 乔永强, 等. 集成余热回收的超临界二氧化碳燃煤发电系统研究[J]. 热力发电, 2020,49(12):17-21.

ZHANG Xuwei, LI Hongzhi, QIAO Yongqiang, et al. Study on supercritical carbon dioxide coal-fired power generation system integrated with waste heat recovery[J]. Thermal Power Generation, 2020, 49(12): 17-21.
张旭伟, 李红智, 乔永强, 等. 集成余热回收的超临界二氧化碳燃煤发电系统研究[J]. 热力发电, 2020,49(12):17-21. DOI： 10.19666/j.rlfd.202003158.

ZHANG Xuwei, LI Hongzhi, QIAO Yongqiang, et al. Study on supercritical carbon dioxide coal-fired power generation system integrated with waste heat recovery[J]. Thermal Power Generation, 2020, 49(12): 17-21. DOI： 10.19666/j.rlfd.202003158.

摘要

锅炉排烟余热和冷端余热回收利用对提高超临界二氧化碳(S-CO_2)燃煤发电系统发电效率具有重要意义。为此

本文提出一种集成排烟和冷端余热回收的S-CO_2燃煤发电系统

并对该系统与常规S-CO_2燃煤发电系统进行对比分析。结果表明:相比常规系统

集成排烟和冷端余热回收的S-CO_2燃煤发电系统通过回收排烟余热和冷端余热

可使系统发电效率提高0.56%

发电标准煤耗率降低3.00 g/(kW·h);该系统可回收2.8 MW冷端耗散?

并有效降低锅炉传热?损7.3 MW

降低排烟?耗散4.9 MW

使得锅炉?效率提高0.65%

最终使系统?效率提高0.51%。

Abstract

Waste heat recovery of the boiler exhaust and the cold-end is of great significance to improving the power efficiency of supercritical carbon dioxide(S-CO_2) coal-fired power plant. Therefore

an S-CO_2 coal-fired power generation system integrated with waste heat recovery of boiler exhaust and the cold-end is proposed in this paper. Moreover

comparative analysis between this system and the conventional S-CO_2 coal-fired power generation system is carried out. The results show that

compared with the conventional S-CO_2 coal-fired power generation system

the power efficiency of the proposed system increases by 0.56% and the standard coal consumption rate decreases by 3.00 g/(kW·h). The proposed system recovers the cold-end exergy loss of 2.8 MW

and reduces the boiler heat transfer exergy loss of 7.3 MW and the boiler exhaust exergy loss of 4.9 MW

resulting in an increase in exergy efficiency of the boiler and the system by 0.65% and 0.51%

respectively.

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