Integration of a cogeneration unit into a kraft pulping process

被引:12
作者
Goortani, Behnam Mostajeran [1 ]
Mateos-Espejel, Enrique [1 ]
Paris, Jean [1 ]
机构
[1] Ecole Polytech Montreal, Dept Chem Engn, Montreal, PQ, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
Cogeneration; Kraft process; Condensing turbine; Back pressure turbine; Steam network; ENERGY EFFICIENCY; MILLS;
D O I
10.1016/j.applthermaleng.2010.07.026
中图分类号
O414.1 [热力学];
学科分类号
摘要
The integration of cogeneration with other measures that impact the power production capacity in a Canadian Kraft pulping mill is studied. Those measures are removal of pressure reduction valves, adjustment of the steam pressure level, biomass boiler capacity, and reduction in process energy demand. CADSIM Plus software is used to simulate the cogeneration plant. The dynamic behavior of the process during start-up and its effect on electricity generation are also considered. It is shown that by replacing the PRVs with turbines, 14.4 MW of power can be generated. Moreover, by implementing cogeneration units and process measures to recover 23% of internal energy, 44.5 MW of electricity can be generated in addition to shutting down the existing bunker oil boiler. Therefore, implementation of cogeneration in the pulp and paper industry is technically possible and it offers significant economic advantages. A cost analysis of the complete project gives a simple payback time of less than a year. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2724 / 2729
页数:6
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