摘要
开展大规模热电解耦技术改造已成为供热机组未来的发展趋势。本文以某亚临界330 MW供热机组为例,从技术原理、技术特点及应用业绩等角度出发,对高中压缸旁路供热、储热供热、电极锅炉、低压缸零出力供热等供热机组常用的热电解耦技术进行了汇总、探讨和比较分析。高中压缸旁路供热技术适用于所有的燃煤供热机组,但其减温减压器、调节阀及相应管路系统运行的安全可靠性有待进一步研究和现场论证;供热机组配置储热罐或电极锅炉装置时,应需要根据当地电网形势、调峰政策、供热热负荷等因素进行优化设计;低压缸零出力供热技术应用于供热机组热电解耦技术改造中成本最低,热经济性最佳,综合优势最大。建议从机组实际情况出发,寻求最适合机组自身特性的热电解耦技术方案。
Large-scale thermoelectric decoupling technology has become the development trend of heating units.Taking a subcritical 330 MW heating unit as an example,from the view of technical principles,technical characteristics and application performance,conventional thermoelectric decoupling technologies of heating units such as bypass heating system of high and medium pressure cylinder,heat accumulator,electric boiler and low pressure cylinders with zero-output are summarized,discussed and comparatively analyzed.The technology of bypass heating system of high and medium pressure cylinder suits for all coal-fired heating units.However,the safety and reliability of the pressure reducer,regulating valve and corresponding piping system need further study and field demonstration.When the heating units equipped with heat accumulator or electric boiler,optimization design should be implemented according to the local power grid situation,peak regulation policy,heat load and other factors.The heating technology of low pressure cylinders with zero-output applied for thermoelectric decoupling technologies of heating units shows significant advantages of the lowest cost,best thermal economy and largest comprehensive advantages.It is recommended that the most suitable thermoelectric decoupling solution should be determined from the unit’s own actual situation.
作者
居文平
吕凯
马汀山
杨荣祖
谷伟伟
JU Wenping;LYU Kai;MA Tingshan;YANG Rongzu;GU Weiwei(Xi’an Thermal Power Research Institute Co.,Ltd.,Xi’an 710054,China;Xi’an TPRI Energy Conservation Technology Co.,Ltd.,Xi’an 710054,China)
出处
《热力发电》
CAS
北大核心
2018年第9期115-121,共7页
Thermal Power Generation
基金
中国华能集团有限公司总部科技项目(HNKJ17-H13)~~
关键词
以热定电
调峰
热电解耦
高中压缸旁路
储热
电极锅炉
低压缸零出力供热技术
fixing electricity based on heat
peak regulation
thermo-electric decoupling
bypass system of high and medium pressure cylinder
heat accumulator
electric boiler
heating technology of low pressure cylinders with zero-output
