CAUSE ANALYSIS OF HIGHER MAIN STEAM TEMPERATURE DURING ROTATION-IMPULSING TO START UP 600 MW SUPERCRITICAL UNIT AND ADOPTED MEASURES

doi:10.19666/j.rlfd.2006.11.011

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CAUSE ANALYSIS OF HIGHER MAIN STEAM TEMPERATURE DURING ROTATION-IMPULSING TO START UP 600 MW SUPERCRITICAL UNIT AND ADOPTED MEASURES

Thermal Power Generation Issue 11, Pages: 32-34(2006)

更新时间：2025-09-28

- CAUSE ANALYSIS OF HIGHER MAIN STEAM TEMPERATURE DURING ROTATION-IMPULSING TO START UP 600 MW SUPERCRITICAL UNIT AND ADOPTED MEASURES
- 作者机构：
  
  湖南省电力试验研究院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2006.11.011
  CLC： TK227.1
- Published：2006
- 稿件说明：
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CAUSE ANALYSIS OF HIGHER MAIN STEAM TEMPERATURE DURING ROTATION-IMPULSING TO START UP 600 MW SUPERCRITICAL UNIT AND ADOPTED MEASURES[J]. Thermal Power Generation, 2006, (11): 32-34.
DOI：

CAUSE ANALYSIS OF HIGHER MAIN STEAM TEMPERATURE DURING ROTATION-IMPULSING TO START UP 600 MW SUPERCRITICAL UNIT AND ADOPTED MEASURES[J]. Thermal Power Generation, 2006, (11): 32-34. DOI： 10.19666/j.rlfd.2006.11.011.

摘要

大唐湘潭发电有限责任公司3号600 MW超临界机组在起动调试过程中

多次出现主蒸汽温度偏高的问题

分析认为其主要原因是燃烧热负荷小、蒸汽流量小、炉膛负压低、给水温度低、减温水与主蒸汽压差偏小等。对此采取以下措施:(1)加大燃油量到(18~24)t/h

增加燃烧热负荷;(2)炉膛负压控制在-600 Pa

增加油枪的根部风;(3)锅炉总风量控制在(500~550)km3/h

改善燃烧;(4)提高给水流量至(410~450)t/h

提高给水温度至90℃以上。实施后效果良好。

Abstract

During the process of commision debugging of 600 MW supercritical unit no.3 in Datang Xiangtan Power-Generation Co Ltd

problems of unexpected higher main steam temperature had repeatedly appeared.Through analysis

it is believed that the main causes are: small heat load of combustion

low flow rate of steam

low negative pressure in the furnace

low temperature of the feed-water

small deviation of differential pressure between desuperheating water and main steam etc..For these

the adopted measures are as follows:（1） to enhance flow rate of the fuel oil to 8-24 t/h for increasing the heat load of combustion;（2） to control negative pressure in the furnace at-600 Pa

for increasing air flow at the root of oil guns;（3） to control total air flow of the boiler in the range of 500

50 km

/h for impr

oving the combustion;（4） to enhance the flow rate of feed-water to 410

50 t/h

and enhancing the temperature of feed-water to above 90 ℃.After implementation

the problem of unexpected higher main steam temperature during the time of rotation-impulsing has been solved.

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