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对加拿大某硫酸盐法制浆工厂将热电联产与其他一些能够影响发电能力的措施相结合进行生产的集成应用进行了研究。这些能够影响发电能力的方法包括减压阀的去除,蒸汽压力水平和生物质锅炉生产能力的调节,以及生产过程中能耗的降低。采用CADSIM Plus软件来模拟热电联产车间的工作情况,同时考虑到了车间启动阶段的动态特性和对发电量的影响。研究表明,用涡轮机代替减压阀,可以产生14.4MW的电量。通过应用热电联产机组和相应的工艺措施,在回收利用了23%的内部能量的同时,还可以停用现存的燃油锅炉,并产生44.5MW的电量。因此,在制浆造纸工业中实施热电联产,不仅技术上可行,而且能够带来显著的经济效益。研究中还对此项目进行了成本分析,结果表明,其投资回收期不足1年。
An integrated application of a Kraft Pulp Factory in Canada to combine CHP with other measures that affect power generation capabilities was studied. These methods that can affect power generation include the removal of pressure relief valves, the regulation of steam pressure levels and biomass boiler capacity, and the reduction of energy consumption in the production process. Using CADSIM Plus software to simulate the work of the cogeneration plant, taking into account the dynamic characteristics of the workshop start-up phase and the impact on power generation. Research shows that instead of the pressure reducing valve, turbines can generate 14.4 MW of electricity. By using combined heat and power (CHP) units and corresponding process measures, 23% of the internal energy can be recovered while the existing oil-fired boiler can be decommissioned and 44.5MW of electricity can be generated. Therefore, the implementation of cogeneration in the pulp and paper industry is not only technically feasible, but also brings significant economic benefits. The project also conducted a cost analysis of the project, the results show that the investment recovery period of less than 1 year.