摘要
采用复合斜孔塔板对醋酸乙烯精馏塔进行了技术改造.采用计算机模拟进料热状况对醋酸乙烯精馏系统的影响以及不同回流比下塔板数、能耗、冷却负荷等,通过改变进料热状况消除塔内恒浓区,优选出最佳精馏方案即进料汽化率20%、回流比R=2、理论板数为63;并应用复合斜孔塔板代替筛板塔板,改造后生产能力提高一倍,节能20%,产品质量稳定,醋酸乙烯精馏塔运行周期从1年延长至3～4年.
The slant-hole tray was applied to the technical innovation of vinyl acetate distillation column. The computer was used to simulate the influence of the heat state of the feed on the distillation system, the number of tray, energy consumption as well as condenser charge under different reflux ratios. Changing the heat state of the feed, the concentration-constant zone was eliminated, and the optimized distillation strategy （20% vaporized feed, reflux ratio 2 and the number of the theory tray 63） was selected. Since the slant-hole tray was applied to replace the sieve plate tray, the productive capacity has been increased by 100%, and energy consumption has been decreased by 20 %. The vinyl acetate product keeps high quality, and the running periods of the distillation tower has been prolonged from one year to 3-4 years.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
2005年第4期47-50,共4页
Natural Gas Chemical Industry
关键词
复合斜孔塔板
醋酸乙烯
精馏
恒浓区
slant-hole tray
vinyl acetate
distillation
concentration-constant zone
