CAUSE ANALYSIS AND EXPERIMENTAL STUDY ON LOW REHEAT STEAM TEMPERATURE OF TOWER TYPE BOILER FOR A 1000 MW UNIT

LUO Shaohui1; LI Chunhong1; PAN Guoqing2 1.Shenhua Zhejiang Guohua Zheneng Power Generation Co.

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CAUSE ANALYSIS AND EXPERIMENTAL STUDY ON LOW REHEAT STEAM TEMPERATURE OF TOWER TYPE BOILER FOR A 1000 MW UNIT

更新时间：2025-09-28

- CAUSE ANALYSIS AND EXPERIMENTAL STUDY ON LOW REHEAT STEAM TEMPERATURE OF TOWER TYPE BOILER FOR A 1000 MW UNIT
- Thermal Power Generation Vol. 41, Issue 11, Pages: 55-58(2012)
- 作者机构：
  
  1. 神华浙江国华浙能发电有限公司
  2. 浙江省电力试验研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK227
- Published：2012
- 稿件说明：
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LUO Shaohui1, LI Chunhong1, PAN Guoqing2 1.Shenhua Zhejiang Guohua Zheneng Power Generation Co.. CAUSE ANALYSIS AND EXPERIMENTAL STUDY ON LOW REHEAT STEAM TEMPERATURE OF TOWER TYPE BOILER FOR A 1000 MW UNIT[J]. Thermal power generation, 2012, 41(11): 55-58.
DOI：

LUO Shaohui1, LI Chunhong1, PAN Guoqing2 1.Shenhua Zhejiang Guohua Zheneng Power Generation Co.. CAUSE ANALYSIS AND EXPERIMENTAL STUDY ON LOW REHEAT STEAM TEMPERATURE OF TOWER TYPE BOILER FOR A 1000 MW UNIT[J]. Thermal power generation, 2012, 41(11): 55-58. DOI：

摘要

对某电厂1 000MW机组塔式锅炉再热汽温长期偏低的原因进行了分析

认为其主要原因是锅炉设计时为防结焦增大了锅炉水冷壁受热面积但未增加再热器及过热器相应受热面

从而导致受热面吸热失衡。对此

在不改造受热面的情况下

通过采取燃烧调整和吹灰优化等措施

使再热汽温比调整前提高了近20℃左右

再热器出口温度偏差也从原来的20℃左右降至10℃以内。按再热汽温每升高10℃煤耗降低0.75g/(kW.h)

每台机组年发电量70亿kW.h计算

可节省标煤约7 875t

经济效益显著。

Abstract

By experimental study

the main reason for long term low reheat steam temperature of the tower type boiler was as follows:to prevent the boiler from slagging

the heating surface of water wall was increased during designing but that of the reheater and superheater was not

leading to imbalance of the heating surface.Thus

in the case of no modification on the heating surface

combustion regulation and soot blowing optimization were conducted

which increased the reheat steam temperature by about 20 ℃

and reduced the reheater outlet temperature deviation from 20 ℃ to 10 ℃ or even lower.The economic benefit was dramatically improved.

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