摘要
隔板精馏技术是一种节能、高效的新型分离工艺。以氯化亚砜产品的精馏过程为实例,应用PRO/II软件对两塔工艺进行模拟计算,模拟结果与工业生产实际数据对比吻合良好,可以得到高纯度产品。进一步模拟计算隔板精馏塔工艺,讨论了汽液相分配比、回流量和侧线采出位置对产品纯度及能耗的影响,确定最适宜操作条件为液相分配比1.4、汽相分配比2、回流量17 000 kg/h、侧线于采出段34块板采出。在最适宜操作条件下与常规精馏塔间接、直接精馏序列相比,分别可节能25.8%和17.9%。
Dividing wall column（DWC） is an energy saving,efficient new separation technology.In this paper,the distillation of thionyl chloride is set as an example.The simulation results of conventional distillation produced by PRO/II software are in good agreement with the actual data in industrial production.High-purity products can be produced.In the further DWC simulation,the effect of vapor and liquid distribution ratios,reflux rate and the location of side draw on product purity and energy consumption is discussed.The optimum operating conditions are determined that the liquid distribution ratio is 1.4,the vapor distribution ratio is 2,the reflux rate is 17 000 kg/h,the location of side draw is on the 34th tray.The new technology operated in optimal conditions can save energy 25.8% and 17.9% compared with conventional indirect and direct distillation sequence respectively.
出处
《化学工业与工程》
CAS
2012年第3期41-45,共5页
Chemical Industry and Engineering
关键词
隔板精馏
氯化亚砜
节能
模拟
dividing wall column
thionyl chloride
energy saving
simulation
