Study on Technical Scheme of Flue Gas Waste Heat Utilization in Utility Boiler

Xiuhong WANG; Wei SHENG; Quanshan LIU

doi:10.12096/j.2096-4528.pgt.18240

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Study on Technical Scheme of Flue Gas Waste Heat Utilization in Utility Boiler

Energy Clean and Efficient Utilization in Coal-fired Power Systems | 更新时间：2025-07-04

- Study on Technical Scheme of Flue Gas Waste Heat Utilization in Utility Boiler
- Power Generation Technology Vol. 40, Issue 3, Pages: 276-280(2019)
- 作者机构：
  
  1.河南理工大学机械与动力工程学院, 河南省焦作市 454000
  2.国家电投河南电力有限公司, 河南省郑州市 450016
- 作者简介：
- 基金信息：
  
  National Science and Technology Supporting Plan(2015BAA03B01)
- DOI：10.12096/j.2096-4528.pgt.18240
  CLC：
- Received：18 November 2018，
  
  Published：30 June 2019
- 稿件说明：
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Xiuhong WANG, Wei SHENG, Quanshan LIU. Study on Technical Scheme of Flue Gas Waste Heat Utilization in Utility Boiler[J]. Power Generation Technology, 2019, 40(3): 276-280.
DOI：

Xiuhong WANG, Wei SHENG, Quanshan LIU. Study on Technical Scheme of Flue Gas Waste Heat Utilization in Utility Boiler[J]. Power Generation Technology, 2019, 40(3): 276-280. DOI： 10.12096/j.2096-4528.pgt.18240.

摘要

超临界电站锅炉排烟热损失量很大，对锅炉尾部烟气余热进行回收利用可以有效提高电厂的热经济性，减少煤耗，降低环境污染。目前火电厂最广泛提高烟气余热利用效率的方式是加装低温省煤器装置。对某超临界机组锅炉余热利用技术进行研究，分析不同低温省煤器布置方案，提出采用双级低温省煤器回收电站锅炉余热利用技术方案，即采用低温烟气与低加凝结水换热技术、前置式空气预热器与低温省煤器组合的能源梯级利用方式，实现最优节能及最佳投资收益。

Abstract

The exhaust heat loss of supercritical power station boilers is very large. Recovery and utilization of waste heat from boiler can effectively improve the thermal economy of power plants

and reduce coal consumption and environmental pollution. At present

the way most widely used to improve the utilization efficiency of flue gas waste heat in thermal power plants is to install low temperature economizer. The waste heat utilization technology of a supercritical unit boiler was studied

different low-temperature economizer layout schemes were analyzed

and a technical scheme for recovery of waste heat from power plant boiler by using dual-stage low-temperature economizer was proposed

i.e.

the combination of low-temperature flue gas and low-condensation water heat exchange technology

the energy of front air pre-heater and low-temperature economizer. The source cascade utilization mode can achieve optimal energy saving and optimal investment return.

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references

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