【摘要】 基于六集总动力学模型,采用BFGS优化算法获得煤直接液化升温阶段和恒温阶段的反应动力学常数,同时通过试验数据回归得到用于煤直接液化分离单元的具体产品组成,并以此为基础开发了煤直接液化反应的AspenPlus用户模型。在此基础上,将上述煤直接液化用户模型与Aspcn Plus流程模拟软件集成在一起,充分利用Aspen Plus软件强大的性质数据库和分离过程模拟计算能力,最终实现了基于AspenPlus平台的煤直接液化全流程模拟,模拟计算得到的煤直接液化反应产物在高温和低温分离器的气液相平衡数据与实验值较吻合。基于Aspen Plus的全流程模拟可以为煤直接液化反应和分离条件的优化选择提供技术参考。更多还原

【Abstract】 Based on six lumped kinetic model,this paper used the BFGS optimization algorithm to obtain kinetic constant of heating-up and isothermal stage of direct coal liquefaction process,and through regression of experimental data to get specific product composition for separation unit of direct coal liquefaction.Then the Aspen Plus user model of direct coal liquefaction was developed and integrated with the Aspen Plus software to achieve an entire process simulation of direct coal liquefaction process in Aspen Plus platform which can make the best use of its powerful databases and simulation calculation ability of separation processes.The calculation value of gas liquid equilibrium in high temperature and low temperature separators for reaction products agreed well with the experiment data.The entire process simulation in Aspen Plus platform can provide technical support for the optimization of direct coal liquefaction reaction and separation conditions.更多还原