分离苯甲苯溷合液的浮阀板式精馏塔工艺设计..docVIP

分离苯-甲苯混合液的浮阀板式精馏塔工艺设计 目 录 中文摘要`````````````````````````````````````````````````````````````````````````````````(2) 英文摘要················································································(2) 引 言················································································(2) 1 设计任务及操作条件·······························································(4) 1.1工艺条件及数据·······························································(4) 1.2操作条件·········································································(5) 2 主要工艺计算·······································································(5) 2.1 精馏塔的物料衡算························································(5) 2.2塔板数的确定··································································(7) 2.3精馏塔的塔体艺尺寸计算··················································(11) 2.4塔板的主要艺尺寸计算·····················································(13) 2.5热衡算············································································(14) 2.6塔的分布·········································································(18) 2.7塔板的流力学验算·····························································(20) 2.8塔板负性能图···································································(22) 2.9塔进出口管的选择·····························································(26) 3 结 果···············································································(27) 4 重要符号说明·········································································(29) 5 参考文献················································································(31) 6 后 记····························································································(32) 中文摘要： 目前用于气液分离的传质设备主要采用板式塔，对于二元混合物的分离，应采用连续精馏过程。浮阀塔在操作弹性、塔板效率、压降、生产能力以及设备造价等方面都比较优越。其主要特点是在塔板的开孔上装有可浮动的浮阀，气流从浮阀周边以稳定的速度水平进入塔板上液层进行两相接触，浮阀可根据气体流量的大小上下浮动，自行调节。其中精馏塔的工艺设计计算包括塔高、塔径、塔板各部分尺寸的设计计算，塔板的布置，塔板流体力学性