[1]李 靖,陈 海,刘 健,等.基于背压小汽轮机方案的大型燃煤电站供热改造[J].热力发电,2018,(预出版):1-5.[doi:10.19666/j.rlfd.201807137]
 LI Jing,CHEN Hai,LIU Jian,et al.Heating retrofit of large coal-fired power stations based on small back-pressure turbine scheme[J].Thermal Power Generation,2018,(预出版):1-5.[doi:10.19666/j.rlfd.201807137]
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基于背压小汽轮机方案的大型燃煤电站供热改造()
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《热力发电》[ISSN:1000-9035/CN:22-1262/O4]

卷:
期数:
2018年预出版
页码:
1-5
栏目:
出版日期:
2018-12-28

文章信息/Info

Title:
Heating retrofit of large coal-fired power stations based on small back-pressure turbine scheme
作者:
李 靖1陈 海1刘 健1魏运军1程 锋1骆 超2
1.中机国际工程设计研究院有限责任公司,湖南 长沙 410000;
2.中国科学院广州能源研究所,广东 广州 510640
Author(s):
 LI Jing1 CHEN Hai1 LIU Jian1 WEI Yunjun1 CHENG Feng1 LUO Chao2
1.China Machinery International Engineering Design & Research Institute Co., Ltd., Changsha 410000, China;
2. Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
关键词:
 供热改造背压小汽轮机热电联产采暖系统节能减排灵活性
分类号:
TM 621.4
DOI:
10.19666/j.rlfd.201807137
文献标志码:
A
摘要:
通过对国内供热改造技术现状的对比分析,选出背压小汽轮机供热改造方案作为靖远第二发电有限公司7、8号机组供热改造方案。从7、8号机组中低压联通管抽汽,一部分进入背压小汽轮机带动发电机发电,排汽分别进入2台前置加热器,将热网循环水加热至95 ℃;另一部分进入尖峰加热器,进一步将热网循环水加热至130 ℃来对外供暖。在非采暖期可以将供热系统解列,停止从主汽轮机中低压连通管抽汽,主汽轮机恢复纯凝工况运行。结果表明,在近期采暖负荷为107.2 MW,采暖期为150天的条件下,供热改造后,年总供热量为1 389 826 GJ,年总节约标准煤量为36 068.7 t,CO2、SO2、NOx、烟尘减排量分别为144 007.6、167.7、196.6、196.4 t/a。实际投产后的运行情况证明:背压小汽轮机供热改造方案系统清晰且运行稳定,节能减排收益可观,同时可以有效降低厂用电率,提高电厂发电上网量,为电厂创造了可观的效益;背压小汽轮机供热改造方案技术已成熟,在北方存在稳定采暖热负荷的城市值得推广。

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更新日期/Last Update: 2018-09-05