ECONOMIC STUDY ON ADDING LOW-TEMPERATURE ECONOMIZER ON A 320 MW UNIT

KANG Xiaoni1; MA Wenju2; MA Tao2; CHEN Xiang2; MA Xuejiang2; ZHAO Chenghai2 1.Xi'an Thermal Power Research Institute Co.

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ECONOMIC STUDY ON ADDING LOW-TEMPERATURE ECONOMIZER ON A 320 MW UNIT

更新时间：2025-09-28

- ECONOMIC STUDY ON ADDING LOW-TEMPERATURE ECONOMIZER ON A 320 MW UNIT
- Thermal Power Generation Vol. 41, Issue 5, Pages: 8-11(2012)
- 作者机构：
  
  1. 西安热工研究院有限公司
  2. 华能宁夏大坝发电有限责任公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK223.2
- Published：2012
- 稿件说明：
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KANG Xiaoni1, MA Wenju2, MA Tao2, et al. ECONOMIC STUDY ON ADDING LOW-TEMPERATURE ECONOMIZER ON A 320 MW UNIT[J]. Thermal power generation, 2012, 41(5): 8-11.
DOI：

KANG Xiaoni1, MA Wenju2, MA Tao2, et al. ECONOMIC STUDY ON ADDING LOW-TEMPERATURE ECONOMIZER ON A 320 MW UNIT[J]. Thermal power generation, 2012, 41(5): 8-11. DOI：

摘要

对某台320MW机组锅炉在尾部烟道加装低温省煤器

利用烟气余热加热机组凝结水

以降低电袋复合除尘器入口烟温。试验结果表明:加装低温省煤器后

汽轮机热耗率下降40.3kJ/(kW.h)

机组供电煤耗降低1.425g/(kW.h);进入电袋复合除尘器的烟气温度降至130℃左右

满足进入脱硫装置排烟温度≤150℃的要求

同时消除了锅炉两侧烟道的烟温偏差

使机组可在任何负荷下安全运行。

Abstract

Low-temperature economizers were additionally installed in the flue duct of a boiler's tail section for a 320 MW unit.To reduce the inlet temperature of electrostatic fabric filter

flue gas heat was used to heat the condensed water.Results show that

adding the low-temperature economizer made the turbine heat rate decrease by 40.3 kJ/(kW·h)

the coal consumption rate of power supply reduce by 1.425 g/(kW·h)

temperature of flue gas entered the electrostatic fabric filter decrease to about 130 ℃

meanwhile

it eliminated the temperature deviation of the boiler 2 sides flue gas duct.This satisfied the request that temperature of exhaust gas entered the desulfurization unit must below 150℃

and made the units can be operated safely under any loads.

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