Abstract: Polygeneration systems of FT synfuels-power based on Shell, GSP and Texaco gasification are designed and simulated. The characters of systems are also assessed. The results show that under the condition of 1000 t/h designed rate of coal feedstock, the yields of synfuels, diesel, naphtha and LPG, are 318.56, 318.42 and 285.79 t/h, respectively. However, the electricity generation does not meet the needs of systems because of 96% of CO conversion rate for FT synthesis. The generated electricity is equivalent to recovery of 2% of coal thermal value. 47.65% of the highest system thermal efficiency comes from the polygeneration based on the Shell gasification. The lowest system thermal efficiency, resulting from the polygeneration based on the Texaco gasification, has decreased 6.5% compared with the former. The proportion of carbon capture to the total carbon entering the systems is 58.69%, 58.65% and 59.55%, respectively.

Key words: coal gasification, Fischer-Tropsch synthesis, combined cycle, polygeneration, simulation

摘要： 设计并模拟了以Shell, GSP, Texaco煤气化为气头的FT合成油-电多联产系统，考察了三者的系统特性. 结果表明，在入炉煤量为1000 t/h的条件下，其合成油(包括柴油、石脑油和LPG)产量分别为318.56, 318.42和285.79 t/h，但FT合成96%的CO转化率使其发电量均不足以满足系统自身的用电，尾气发电仅相当于回收了原料煤热值近2%的能量. 以Shell技术为气头的多联产系统具有最高的系统热效率(47.65%)，Texaco技术为气头的多联产系统具有最低的系统热效率，比前者低6.5%左右. 3种方案捕获的CO2分别相当于回收了进入系统全部碳含量的58.69%, 58.65%, 59.55%.

关键词: 煤气化, FT合成, 联合循环, 多联产, 模拟