ANALYSIS ABOUT JOINTING POINT OF RETURNED COOLING WATER FROM THE SLAG COOLER AND IMPROVEMENT SCHEME THEREOF

HUANG Jia-si1; ZHANG Ai-jun2; WEI Tong-sheng1; QIAN Yu-min11.Xi'an Thermal Power Research Institute Co Ltd

doi:10.19666/j.rlfd.2009.03.018

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ANALYSIS ABOUT JOINTING POINT OF RETURNED COOLING WATER FROM THE SLAG COOLER AND IMPROVEMENT SCHEME THEREOF

更新时间：2025-09-28

- ANALYSIS ABOUT JOINTING POINT OF RETURNED COOLING WATER FROM THE SLAG COOLER AND IMPROVEMENT SCHEME THEREOF
- Thermal Power Generation Vol. 38, Issue 3, Pages: 75-77(2009)
- 作者机构：
  
  1. 西安热工研究院有限公司
  2. 华能呼伦贝尔能源公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2009.03.018
  CLC： TK264.1
- Published：2009
- 稿件说明：
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HUANG Jia-si1, ZHANG Ai-jun2, WEI Tong-sheng1, et al. ANALYSIS ABOUT JOINTING POINT OF RETURNED COOLING WATER FROM THE SLAG COOLER AND IMPROVEMENT SCHEME THEREOF[J]. Thermal power generation, 2009, 38(3): 75-77.
DOI：

HUANG Jia-si1, ZHANG Ai-jun2, WEI Tong-sheng1, et al. ANALYSIS ABOUT JOINTING POINT OF RETURNED COOLING WATER FROM THE SLAG COOLER AND IMPROVEMENT SCHEME THEREOF[J]. Thermal power generation, 2009, 38(3): 75-77. DOI： 10.19666/j.rlfd.2009.03.018.

摘要

针对蒙西发电厂2×300 MW机组的冷渣器冷却水回水接入点不当

导致机组整体循环效率降低

影响机组运行经济性的问题进行了分析

提出了优化改进方案。与原接入点相比

采用将冷渣器冷却水回水接入7号低压加热器(低加)入口

且所有凝结水串联通过冷渣器和7号低加的方案

可使机组负荷在292 MW时供电煤耗率下降1.25 g/(kW.h)

在202 MW时供电煤耗率下降1.67 g/(kW.h);采用将冷渣器冷却水回水接入6号低加入口

且凝结水并联通过冷渣器和7号低加的方案

可使机组负荷在292 MW时供电煤耗率下降0.83 g/(kW.h)

在202 MW时供电煤耗率下降1.22 g/(kW.h)。

Abstract

Directiong against improper jointing point of returned cooling water from slag cooler of 2×300 MW units in Mengxi Power Plant

the decrease of integral cycle efficiency and its influence upon economic efficiency in operation of the units have been analysed

and an optimized improvement scheme being put forward on the basis of data obtained from results of analysis.Compared with the original units

a scheme

in which the returened cooling water from slag cooler is jointed into the inlet of low-pressure heater no.7

and all condensate being passed through the salg cooler and low-pressure heater no.7 in series has been adopted

the net coal consumption rate can be lowered by 1.25 g/(kw·h) and 1.67 g/(kw·h) under load of the unit being 292 MW and 202 MW respectively.In the event of returned cooling water being jointed into the inlet of low-pressure heater no.6

and all condensate being passed through the slag cooler and low-pressure heater no.7

the net coal consumption rate can be lowered by 0.83 g/(kw·h) and 1.22 g/(kw·h) under load of the unit being 292 MW and 202 MW respectively.

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