Feed flash convention方式探讨

longkui1990

相信大家在学化工原理的时候老是都是教的上面一种
即进料按q的大小去算精馏段、提馏段汽液两相的摩尔流率
但是为何软件中要出现下面一种计算方式？
且居然把下面一种当成默认的？


Feed Flash Convention

Single phase feeds are always placed onto the feed tray - liquid feeds enter above the feed tray and vapor feeds enter below it. Two options are provided for handling mixed phase vapor/liquid column feeds. The option which is selected is used for all feeds to the column.

Vapor and Liquid On the Feed Tray

This option is the default. Each feed is placed on the designated feed tray, regardless of the thermal condition of the feed. The liquid portion enters above the feed tray and the vapor portion enters below it.

Flash the feed adiabatically, ...

For this option, each feed is adiabatically separated into liquid and vapor portions. The liquid portion is placed on the designated feed tray and the vapor portion feeds the next higher tray in the column, simulating the flashing which occurs at actual column feed trays. Even if this option is specified, column feeds which are all vapor are placed on the designated feed tray.

jacques0920

没看懂，不过还是值得学习的

华歆

气液混合进料不应该是液相进入指定塔板，气相进入上一层塔板的底部吗？

longkui1990

华歆 发表于 2013-11-11 22:16
气液混合进料不应该是液相进入指定塔板，气相进入上一层塔板的底部吗？

我也是这么想的

djj723800

气液混合进料选下面的闪蒸选项，单项进料选哪个都一样。