Optimization of feed plate for deethanizer tower and liquefied gas tower in natural gas ethane recovery system
A simulation model of natural gas ethane recovery system was established using Aspen Plus simulation software,and sensitivity analysis was conducted on the deethanizer and liquefied gas tow-er.The influence of feed plate on product quality and reboiler heat load was investigated.The results showed that as the feed position moved downwards,the molar fraction of ethane in the top product of the deethanizer tower showed an inverted U-shaped change,while the molar fraction of ethane in the bottom product and the heat load of the reboiler showed a U-shaped change.The most suitable feed position for the deethanizer tower was above the 17th tray;as the feed position moved downwards,the heat load of the reboiler in the liquefied gas tower changed in a U-shape.The molar fractions of isopentane and n-pentane at the bottom of the tower both changed in an inverted U-shape,while the mo-lar fraction of propane in the top product gradually decreases.The most suitable feed plate position for the liquefied gas tower was the 8th to 10th trays.
liquefied gasethane recovery sys-temdeethanizer towerliquefied gas towerfeed plateoptimization
万方数据
维普
