摘要
利用PRO/II化工流程模拟计算软件,对乙二醇分离过程中的乙醇塔、中杂塔和乙二醇产品塔进行了模拟计算分析,三塔均采用NRTL热力学计算模型,并对热力学参数进行修正,通过计算各塔理论板数、进料位置和回流比等操作参数,模拟优化出最佳工艺条件。结果表明,三塔流程工艺流程操作合理,灵活性强,可分离得到符合质量要求的乙二醇,在一定程度上预测了工业化生产的要求。
The ethanol column,mid-boiling point byproducts column and ethylene glycol column of the three-column separation process for the product from ethylene glycol production by hydrogenation of diethyl oxalate were simulated by the software PRO/II,and NRTL thermodynamic model was selected for the simulation calculation of all of the three columns.The thermodynamic parameters were modified,and the numbers of theoretical plates,feed stages and reflux ratios were calculated and adjusted to get the optimal results for all of the three columns.The simulated results demonstrate that the three-column separation process is feasible and flexible and can obtain an ethylene glycol product which meets the quality requirement,and give a prediction on the requirement in industrial production of ethylene glycol to some extent.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
2011年第3期42-44,共3页
Natural Gas Chemical Industry
