Optimization of methanol double-effect distillation system
NING Limin
LI Guozhong
SHAN Junjie
Abstract：The methanol double-effect distillation system is simulated and analyzed with the process simulation technology.The optimization scheme is proposed on the basis of the simulation data and the actual condition.The results show that,the simulation production of 350. 4 t/d is in accordance with the actual production of 350 t/d.The Wilson in activity coefficient model is used for the simulation.The simulation study show that the methanol double-effect distillation system of steam required amount is 9.83 t/h,and the use of steam in actual operat-ing condition is 12.2 t/h,the steam practical usage is still too large.The optimum reflux of the pressured distillation tower 1.50 through sim-ulation study,and the optimum reflux of distillation tower is 0.94.The twenty-fifth tower plate in the pressured tower is the sensitive plate, the eighteenth tower plate and the thirty-eighth tower plate in the atmospheric distillation tower is the sensitive plate. The temperature a-bove the tray should be focused on daily operation index.
Keywords：methanoldouble-effect distillationprocess simulationpressured distillation toweratmospheric distillation tower
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 58-60,64 )