锅炉技术2024，Vol.55Issue(4)：32-37,6.
垃圾焚烧余热锅炉高温过热器超温解决对策探究
Exploration of Overtemperature Solution of High-Temperature Superheater of Waste Incineration HRSG
王志强 1陈子龙 1金飞 1龙吉生1
作者信息
- 1. 上海康恒环境股份有限公司,上海 201703
- 折叠
摘要
Abstract
In order to reasonably control the flue gas temperature at the inlet of the superheater and alleviate the high-temperature corrosion of the superheater caused by the calorific value exceeding the design value,increasing the area of the evaporator before the superheater is one of the effective technical improvement measures.Based on the heat transfer theory of the evaporator in the radiation heating area,this paper takes a 750 t/d waste incineration HRSG with a single-boiler processing scale as the research object.Under different low heating value(LHV)and boiler main steam parameters,when the calorific value of the waste into the furnace is higher than the design calorific value,the area of the evaporator that needs to be added to safely control the flue gas temperature has been calculated and verified by engineering experiments.The calculation results show that,taking a single furnace of 750 t/d and boiler parameters of 6.4 MPa/485℃as an example,as the calorific value of waste increases from the design value of 7118 kJ/kg to 8792 kJ/kg,in order to control the inlet flue gas temperature of the superheater at the same level,the evaporator area needs to be added by 476 m2.The over-temperature problem of the project was solved after the engineering technical renovation,indicating that the calculation method in this paper can predict the additional area of the evaporator according to the LHV.After the technical transformation,the operating profit of the project increased by 4.71 million yuan/a.关键词
垃圾焚烧/高温过热器/超温/传热计算/工程技改Key words
waste incineration/high temperature superheater/overtemperature/heat transfer calculation/engineering technical improvement分类
环境科学引用本文复制引用
王志强,陈子龙,金飞,龙吉生..垃圾焚烧余热锅炉高温过热器超温解决对策探究[J].锅炉技术,2024,55(4):32-37,6.
