内置式气气换热器在SCR烟气脱硝尿素热解系统中的应用

doi:10.11930/j.issn.1004-9649.201711085

中国电力 ›› 2018, Vol. 51 ›› Issue (7): 145-151.DOI: 10.11930/j.issn.1004-9649.201711085

内置式气气换热器在SCR烟气脱硝尿素热解系统中的应用

宋健¹, 胡章茂², 邓伟力¹, 陈冬林², 刘良华¹, 魏绵源², 文聪²

1. 湖南大唐节能科技有限公司,湖南长沙 410329;
2. 长沙理工大学能源与动力工程学院,湖南长沙 410114

收稿日期:2017-11-14 修回日期:2018-03-05 出版日期:2018-07-05 发布日期:2018-07-31
作者简介:宋健(1980-),男,工程师,从事电站锅炉的微油点火、低氮燃烧技术、脱硫脱硝技术研发工作,E-mail:33305355@qq.com
基金资助:
湖南省教育厅科学研究基金重点资助项目（10A004）；“清洁能源与智能电网2011协同创新中心”资助。

Application of Built-in Gas-to-Gas Heat Exchanger in the Urea Pyrolysis System for SCR Denifrication

SONG Jian¹, HU Zhangmao², DENG Weili¹, CHEN Donglin², LIU Lianghua¹, WEI Mianyuan², WEN Cong²

1. Hunan Datang Energy Saving Technology Co., Ltd., Changsha 410329, China;
2. School of Energy and Power Engineering, Changsha University of Science and Technology, Changsha 410114, China

Received:2017-11-14 Revised:2018-03-05 Online:2018-07-05 Published:2018-07-31
Supported by:
This work is supported by Key Projects of Hunan Provincial Department of Education Supported by Science Research Fund (No.10A004) and 2011 Collaborative Innovation Center of Clean Energy and Smart Grid.

摘要/Abstract

摘要： 采用内置式气气换热器的尿素热解过程具有系统简单、能耗低等优点。在详细分析内置式气气换热器技术特点的基础上，提出了采用内置式气气换热器的尿素热解方案并应用于某300MW机组的脱硝系统，将原天然气加热热解工艺改造为内置式气气换热器。改造后运行结果表明，内置式气气换热器每年可减少天然气消耗约360 000 m³（标准状态），减少运行费用90余万元，产生了良好的经济效益。

关键词: 火电厂, 烟气脱硝, SCR, 尿素热解, 内置式气气换热器

Abstract: The urea pyrolysis process adopting the gas-to-gas heat exchanger (GGH) is characterized with simple system and low energy consumption. In this paper, based on the detailed analysis on the characteristics of the GGH, a design of GGH for the use in the process of urea pyrolysis is proposed and applied to the retrofit of the denitration system of a 300-MW unit, in which the original pyrolysis by natural gas heating is changed with GGH. The operation results show that the design of GGH can reduce the natural gas consumption by about 360,000 m³ (standard state) and reduce the operating costs by more than RMB 900,000 yuan each year. The retrofit has obtained good economic benefits.

Key words: thermal power plant, flue gas denitration, SCR, urea pyrolysis, built-in gas-to-gas heat exchanger

中图分类号:

TK01

宋健, 胡章茂, 邓伟力, 陈冬林, 刘良华, 魏绵源, 文聪. 内置式气气换热器在SCR烟气脱硝尿素热解系统中的应用[J]. 中国电力, 2018, 51(7): 145-151.

SONG Jian, HU Zhangmao, DENG Weili, CHEN Donglin, LIU Lianghua, WEI Mianyuan, WEN Cong. Application of Built-in Gas-to-Gas Heat Exchanger in the Urea Pyrolysis System for SCR Denifrication[J]. Electric Power, 2018, 51(7): 145-151.

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https://www.electricpower.com.cn/CN/Y2018/V51/I7/145

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内置式气气换热器在SCR烟气脱硝尿素热解系统中的应用

Application of Built-in Gas-to-Gas Heat Exchanger in the Urea Pyrolysis System for SCR Denifrication

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内置式气气换热器在SCR烟气脱硝尿素热解系统中的应用

Application of Built-in Gas-to-Gas Heat Exchanger in the Urea Pyrolysis System for SCR Denifrication

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