MDEA脱硫过程的模拟分析与优化

用渗透理论建立的ＭＤＥＡ对Ｈ２Ｓ和ＣＯ２同时吸收的传质动力学模型，结合有关数据建立了以机理为基础的ＭＤＥＡ脱硫过程的流程模拟系统，将现有的用ＭＤＥＡ从天然气、炼厂气选择性脱除Ｈ２Ｓ的过程用于处理Ｈ２Ｓ浓度更高、ＣＯ２／Ｈ２Ｓ比大并含有其它杂质的酸性废气。通过模拟计算，找出了该装置用于处理酸性废气净化率不达标的原因，确定了限制装置生产能力的瓶颈，提出了装置的操作方案。

Process Simulation and Optimization for Desulfurization with MDEA

A mass transfer dynamic model of absorbing H 2S and CO 2 simultaneously by MDEA is obtained based on the penetration theory,and process simulation of MDEA desulfurization is made on the basis of mechanism with related data.With the model and system,it applies the available process of separating H 2S from natural gas and refinery gas selectively with MDEA to the disposal of acid waste gas containing higher density H 2S,high proportion of CO 2 to H 2S and other impurities.And on the basis of simulated calculation,the cause of the systems failure to live up to the purification requirement is found out;the bottleneck restricting the production capacity is identified, and an operation scheme is put forward.