A high effective circulating system for exhaust heat utilization

SUN Jie1; YIN Jinliang2; BAI Yanwu2; WANG Guanwen2; YAN Shuibao3; ZHANG Quan4 1.Technical Skill Training Center of Henan Electric Power Co.

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A high effective circulating system for exhaust heat utilization

Thermal Power Generation Vol. 42, Issue 8, Pages: 22-33(2013)

更新时间：2025-09-28

- A high effective circulating system for exhaust heat utilization
- 作者机构：
  
  1. 河南省电力公司技术技能培训中心
  2. 平顶山发电公司
  3. 郑州大学化工能源学院
  4. 平东热电公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK223
- Published：2013
- 稿件说明：
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SUN Jie1, YIN Jinliang2, BAI Yanwu2, et al. A high effective circulating system for exhaust heat utilization[J]. Thermal Power Generation, 2013, 42(8): 22-33.
DOI：

SUN Jie1, YIN Jinliang2, BAI Yanwu2, et al. A high effective circulating system for exhaust heat utilization[J]. Thermal Power Generation, 2013, 42(8): 22-33. DOI：

摘要

国内50～1 000MW电站锅炉烟气余热利用于凝结水系统

其转换效率为19.5%～23%

根据能级原理

提出了一种深度利用烟气余热和减少回热抽汽损失、实现锅炉排烟温度自动控制的高效循环系统方案。热力学分析表明

此方案可使1 000MW机组无煤附加功率由0.6MW增加至20.125MW

全厂净效率提高0.9%

投资回收期小于2.0年

具有良好的节能减排、降低发电煤耗的作用

并对新建和老机组设计优化提出了原则性的建议。

Abstract

At present

the exhaust heat from boilers in domestic 50to 1 000 MW units is used in condensation systems

and the heat conversion rate is between 19.5%and 23%.According to the energy level theory

a high effective circulating system was put forward

which can realize automatic control of the exhaust temperature

take full use of the exhaust heat

and reduce the regenerative steam loss.The thermal dynamic analysis showed that

after this scheme was performed

the no fuel added-power of a 1 000MW unit was increased from 0.6MW to 20.125MW

the unit net power was enhanced by 0.9%

and the investment recovery period was less than 2.0years.So this system has good performance on energy saving and coal consumption reduction.Finally

principled suggestions on design optimization of the newly built and old power generation units were proposed.

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