Abstract: Polygeneration systems of FT synfuels-power with different process routs based on Shell gasification are designed and simulated through different cases in series and parallel connections. Their characters are also assessed. The results show that under the conditions of conversion of carbon monoxide (XCO=0.96), mole ratio of hydrogen to carbon (H2/CO=1.5), the most yield of synfuels comes from the polygeneration system in series such as diesel 205.2 t/h, naphtha 73.24 t/h and liquefied petroleum gas (LPG) 40.12 t/h, respectively. But the electricity generated can not meet the need of power consumption of the system. As to the polygeneration systems of parallel connection, getting along with decrease of splitting flow rate, the yield of the synfuels decreases but electricity generation increases sharply. System thermal efficiency also presents a decreasing trend that is 47.55% (FT-100), 46.85% (FT-75) and 4.98% (FT-25), respectively. Carbon capture rates of the three cases are 58.7% (FT-100), 44% (FT-75) and 14.7% (FT-25), respectively.

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

摘要： 设计并模拟了以Shell煤气化为气头的FT合成油-电多联产串联型和并联型案例，研究了不同工艺路线的系统特性. 结果表明，在CO总转化率0.96、摩尔比H2/CO=1.5的条件下，串联型多联产具有最多的合成油产量，分别为柴油205.2、石脑油73.24及液化石油气(LPG) 40.12 t/h，但发电量不足以满足自身用电消耗；并联型多联产随合成气分流比降低，合成油产量下降而发电量大幅上升，但系统热效率降低，分别为47.55%(FT-100), 46.85%(FT-75)及44.98%(FT-25). 3种方案的C捕集率分别为58.7%(FT-100), 44%(FT-75)和14.7%(FT-25).

关键词: 多联产, 煤气化, FT合成, 联合循环, 模拟