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我市某大型企业,原有多台工业锅炉,生产和生活用汽达200余t/h,既是用煤大户,也是污染环境源头之一。近年来开始重视节能与环保工作,在第一期扩建时实行热电联产,安装了2台75t/h煤粉锅炉,配套2台12MW背压机组,初压6MPa、450℃,背压0.6MPa、180℃,投产以来取得了良好的经济效益和环境效益,现简要叙述如下:1热电联产系统示意图2两类锅炉技术参数对比工业锅炉与热电锅炉技术参数见表1。3热电耗煤与节煤1)热电耗煤量计算公式
A large-scale enterprises in our city, the original multiple industrial boilers, production and living with more than 200 tons of steam, both large coal, but also one of the sources of environmental pollution. In recent years, emphasis has been placed on energy conservation and environmental protection. In the first phase of expansion, cogeneration was implemented. Two 75t / h pulverized coal boilers were installed and two 12MW backpressure units were installed. The initial pressure was 6MPa, 450 ℃ and back pressure 0.6 MPa, 180 ℃, has achieved good economic and environmental benefits since it was put into production. The brief description is as follows: 1 Schematic diagram of cogeneration system 2 Comparison of technical parameters of two types of boilers Technical parameters of industrial boilers and thermal boilers are shown in Table 1.3 Thermal coal consumption With coal saving 1) Thermal power coal consumption formula