为合理利用焦炉煤气,设计了以焦炉煤气为原料的鲁奇气相法甲醇合成系统的工艺流程,基于Aspen Plus软件模拟得到了系统的关键参数;对燃用焦炉煤气的燃气-蒸汽联合循环的性能进行了计算,并与燃用天然气时的性能进行了比较;设计了利用焦炉煤气合成甲醇和发电的并联式多联产系统,并与单产系统的性能进行了比较.结果表明：采用炉前补碳工艺可提高甲醇合成产量,并降低能耗6%左右;由天然气改烧焦炉煤气后,联合循环的净功率下降了0.87%,热效率下降了0.91%;甲醇–发电并联式多联产系统的热效率比单产系统高约两个百分点,采用炉前补碳工艺的多联产系统热经济性最优.

In order to reasonably utilize coke oven gas（COG）,first,a Lurgi gas-phase methanol synthesis system was designed,with COG as the raw material,and the key parameters of the system were obtained by the simulation with Aspen Plus.Next,the performance of gas-steam combined cycle firing COG was calculated and compared with that firing natural gas.Then,a parallel poly-generation system for gas-phase methanol synthesis and electric power generation was designed.Finally,a performance comparison was performed between the designed system and the exi-sting one-product system.The results show that the carbon supplementation before reformer increases the methanol yield and decreases the energy consumption by about 6%,that the net power and thermal efficiency of the combined cycle respectively decrease by 0.87% and 0.91% when substituting COG for natural gas,and that the thermal efficiency of the poly-generation system is about two points of percentage higher than that of the one-product system.Thus,it comes to the conclusion that the proposed poly-generation system with carbon supplementation before reformer is of the highest thermo-economic benefit.