基于子系统规模调配的烯烃生产过程模拟与优化  

Simulation and optimization of olefin production processes based on subsystem scale allocation

作　　者：李文静 张桥[1] LI Wenjing;ZHANG Qiao(School of Chemical Engineering&Technology,Xi¢an Jiaotong University,Xi¢an 710049,China)

机构地区：[1]西安交通大学化学工程与技术学院,陕西西安710049

出　　处：《高校化学工程学报》2024年第4期644-651,共8页Journal of Chemical Engineering of Chinese Universities

摘　　要：针对单个烯烃生产系统节能潜力有限的问题,提出基于烯烃生产子系统规模调配的方法,构建混合整数非线性规划(MINLP)优化模型。以单位产量1 t×h^(-1)为基准规模,当丙烷脱氢和乙烷裂解的规模系数分别为50.0和89.4时(即产量分别为50.0 t×h^(-1)和89.4 t×h^(-1)),系统的能量回收率达到最大,为82.6%。与两者独立子系统相比,公用工程负荷减少502.7 MW,对应的中低压蒸气消耗量减少544.9 t×h^(-1),电能减少0.5 MW,碳排放量减少0.5 t×h^(-1),节能减排的效果非常显著。结果表明,多个系统间能量交互可以有效提高能量回收率,且最优的规模系数使系统整体能量回收率达到最大。To address limited energy-saving potential in individual olefin production systems,this study proposed a method based on scale allocation of olefin production subsystems and constructed a mixed-integer nonlinear programming(MINLP)optimization model.The system achieved the maximum energy recovery rate of 82.6%using a benchmark scale of 1 t×h^(-1) unit output,when the scale factors for propane dehydrogenation and ethane cracking were 50.0 and 89.4(i.e.,production of 50.0 t×h^(-1) and 89.4 t×h^(-1)),respectively.Compared with the independent subsystem,the load of public works is reduced by 502.7 MW,the corresponding low and medium pressure steam consumption is reduced by 544.9 t×h^(-1),the electric energy is reduced by 0.5 MW,the carbon emission is reduced by 0.5 t×h^(-1),and the effect of energy conservation and emission reduction were significant.The results indicate that energy interaction among multiple systems can effectively enhance energy recovery rates,and the optimal scale factors enable to reach the maximum overall system energy recovery rate.

关 键 词：烯烃 混合整数非线性规划(MINLP) 能量回收率 规模调配 节能减排 

分 类 号：TQ021.8[化学工程]