燃煤与燃气热源技术在热电联产项目中比选应用

Analysis and selection between coal-fired heat source technology and gas heat source technology in cogeneration projects

利用热电联产技术建设集中供热中心可满足繁昌经济开发园区的供热需求。针对繁昌经济开发区现有及近期规划热负荷情况,对以天然气为原料的天然气热电联产(燃气-蒸汽联合循环供热技术)和以煤粉为原料的燃煤热电联产(现代煤粉锅炉供热技术)供热技术部分从环境影响、经济效益2个方面进行系统的技术对比分析。经对比分析可知,2种机组热源技术在空气环境、水环境、声环境及固废处置4个方面的环境污染均控制在可接受的范围内,环境效益相当,但现代煤粉锅炉系统热效率较高且具有更优的经济效益,因此现代煤粉锅炉供热机组更符合繁昌经济开发区热电联产工程的建设需求。

Utilizing technology of cogeneration,combined heat and power(CHP)to build the heat supply center can meet the heat supply requirements of Fanchang economic development zone.Regarding to existing heat load and near-term heat load plan of Fanchang economic development zone,the comparative analysis of the CHP which takes gas as fuel(Gas-steam combined cycle heating technology)and the CHP which takes pulverized coal as fuel(Modern pulverized coal boiler heat supply technology)were done from aspects of environment and economy.Through the comparison and analysis,it is shown that for these two kinds of unit heat source technologies,the environment pollution at four aspects like gas environment,water environment,sound environment and solid waste treatment can be controlled within acceptable range,the environment benefits are equal.Modern pulverized coal boiler system has higher thermal efficiency and better economic benefits,therefore,the modern pulverized coal boiler heating unit is more in line with the construction needs of cogeneration project in Fanchang economic development zone.