This article offers a brief description for the steam turbine generator configuration of an ethylene factory. It makes some proposals concerning how to optimize the operation of steam turbine and system equipment of the steam network according to the changes of outside thermoelectric load, aiming at reducing factory energy consumption and improving the e-conomy of the thermoelectric equipment. The article makes a quantitative analysis on the change of unit efficiency and power supply standard coal consumption caused by the change of the extraction steam and condensing steam ratio of the No. I/No. 2 double-extraction steam turbine sets. It establishes mathematical model and based on it, power supply standard coal consumption is calculated. According to the calculation results for the steam turbine sets,the article points out the factors that influence the techno-economic indicator of the operation of the steam turbine sets.%对某乙烯工厂热电装置供热机组配置作了简介,提出了如何根据外部热电负荷变化而优化汽轮机、蒸汽管网系统设备的运行.目的是降低工厂能耗,提高热电装置经济性.对热电装置1号/2号双抽发电汽轮机组抽汽、凝汽比例改变引起机组效率和供电标准煤耗变化等进行了定量分析,建立了数学模型,据此模型计算出对应的供电标准煤耗.根据机组计算结果,指出了影响机组运行经济技术指标的因素.
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