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造纸工业是我国能耗较大的工业,每年总消耗标煤约700万吨,消耗电能约80多亿度,能源利用率尚低,也只有30～40％左右,因而单位产品能耗高。但是,它有大量的余热和锅炉余压可利用,约占燃料消耗量的17％。当前,余压发电在我国中小型造纸企业中已经成为改进生产结构、发展企业经济的有力措施和根本途径。本文通过对造纸生产工艺用汽、用电情况的分析,结合该类型企业中的典型厂,应用工业汽轮机进行压差发电的过程及经济效益,阐述我国中小型造纸企业节能的有效方法和发展趋势。
Paper industry is a large energy-consuming industry in China. The total annual consumption of about 700 million tons of standard coal, the power consumption of about 80 billion degrees, energy efficiency is still low, only about 30 to 40%, thus high energy consumption per unit of product. However, it has a lot of waste heat and boiler residual pressure available, accounting for about 17% of fuel consumption. At present, residual pressure power generation has become a powerful measure and fundamental way to improve the production structure and develop the enterprise economy in the small and medium-sized papermaking enterprises in our country. Based on the analysis of steam and electricity consumption in the process of papermaking, combined with the typical factories in this type of enterprise, this paper applies the industrial steam turbine to process and economic benefits of pressure difference power generation, and expounds the effective methods and development trend of energy saving for small and medium-sized papermaking enterprises in our country. .