Simulation of a Dividing Wall Column Process for Separating Pentane Foaming Agent
In order to improve the added value of reformed light naphtha and fully recover the pentane component,the dividing wall column process of the pentane foaming agent separation device was established using process simulation software.The operating parameters of the dividing wall column process of the pentane foaming agent separation device were analyzed and optimized,the results showed that the total mass fraction of the pentane was the highest when the feed temperature was 80℃;the feed position and the side draw position(from top to bottom)were 26#and 12#,and the liquid and gas distribution ratio(feed side)was 0.4.For the reflux ratio,the qualified pentane foaming agent product was obtained when reflux ratio was greater than 20.The established dividing wall column process was compared with the conventional two-column separation process,the results showed that the number of column,reflux tanks,and pumps in the next-door tower process was reduced by 1,which reduced the equipment investment cost and floor space;the condenser duty of the dividing wall column process was reduced by 14.9%,and the reboiler duty was reduced by 12.1%.The energy-saving effect was satisfying.
pentane foaming agentdividing wall columnprocess simulationenergy savingseparationapplied research
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