基于ASPEN PLUS的固定床煤气化稳态模拟方法研究

用ASPEN PLUS软件对固定床煤气化过程进行模拟，采用带FORTRAN气化动力学子程序的串联全混流反应器来代替Gibbs反应器，能够更好地反映气化炉的真实反应情况，结果表明该模型与实际固定床煤气化的反应结果吻合较好。利用该模型研究了串联釜数对碳转化率及出口温度的影响，研究表明：随着釜数的增加，碳转化率和出口温度更加接近于实际数据；在保证模拟精度的前提下，较少的釜数有利于减少计算量。

Steady-state simulation of fixed bed for coal gasification using ASPEN PLUS

ASPEN PLUS is used to simulate the fixed bed for coal gasification process.The gasification reaction kinetics is expressed by FORTRAN subroutine in RCSTRs,and then the RSCTRS in series are used to substitute the Gibbs reactor.So the reaction condition of the gasifier can be described more accurate in the simulation and the results of the simulation are in agreement with the actual fixed bed of the coal gasification process.The proposed model was applied to study the effect of the number of RCSTRs on carbon conversion and outlet temperature.The results show that carbon conversion and outlet temperature are closer to the actual data with the number increase of RCSTRs.However,less number of RCSTRs helps to reduce the computation time.With consideration of the accuracy and computation time of the simulation for coal gasification,it is suitable to use 6 RCSTRs in series to describe the fixed bed according to the results of the simulation.