论文期刊

A novel graphical method for the integration of hydrogen distribution systems




作者: Qiao Zhang, Xiao Feng*, Guilian Liu and Khim H. Chu
发表/完成日期: 2011-02-05
期刊名称: Chemical Engineering Science
期卷: 66
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论文简介
Increase in refining demand and tighter environmental regulations have led to sharp increases in
hydrogen consumption of oil refineries. Hydrogen conservation and effective use are of interest to
refineries whose operations and profitability are constrained by hydrogen. Purification is widely used in
hydrogen networks of refineries to reduce hydrogen production load. To minimize hydrogen utility
consumption,itisnecessary tooptimizethehydrogennetworkwith purificationasawhole.Inthispaper,
for hydrogen purification process, a triangle rule (which can be generalized to polygon rule) is proposed
forgraphicalrepresentationofitsmassbalance.Theproposedproceduretreatstheproductconcentration
and recovery rate of the purification process as adjustable parameters. An ensuing graphical method is
developed for targeting the pinch point and minimum utility consumption of the hydrogen system with
purificationreuse.Thisgraphicalmethodcanbeusedforanypurificationdevicesandinsystemswithany
utility concentration. A refinery case is studied to demonstrate the optimization method