Tower kettle of rectifying tower

Abstract

The invention relates to a tower kettle of a rectifying tower. The tower kettle of the rectifying tower comprises a tower kettle, a liquid outlet for liquid to flow to a reboiler, a reflow inlet for vapor-liquid from the reboiler, a residual liquid outlet, a bottom layer column plate, a bottom layer downspout and a bottom layer downspout bottom plate. The tower kettle of the rectifying tower is characterized by also comprising a bottom layer column plate liquid guide tube, wherein a hole is formed on the bottom layer downspout bottom plate; the upper end of the bottom layer column plate liquid guide tube is connected to the hole of the bottom layer downspout bottom plate to close the hole, and the lower end of the bottom layer column plate liquid guide tube is placed above the liquid outlet for the liquid to flow to the reboiler, and keeps a distance with the outlet; and the bottom layer downspout and the bottom layer downspout bottom plate are combined tightly without gap. By adopting the rectifying tower, bottom layer column plate liquid which contains volatile components with the highest concentration can be ensured to completely enter the reboiler and is prevented from stopping in the tower kettle, and the concentration of the volatile components in the liquid entering the reboiler is improved as much as possible to ensure that the separation effect of the reboiler is played to the utmost extent.

Description

technical field [0001] The invention relates to a chemical production equipment, in particular to a plate type rectifying tower kettle for gas-liquid heat transfer, mass transfer such as gas-liquid heat exchange, gas absorption or liquid rectification in chemical production. It belongs to the technical field of chemical equipment. Background technique [0002] Distillation tower is a common equipment for gas-liquid heat transfer and mass transfer process. The structure of the column kettle has an important influence on the separation efficiency of the reboiler. At present, there are two types of rectification tower still structures in chemical production: the first type is that the tower still is empty without any partition parts; the second type is that a partition plate is installed in the tower still to separate the tower into two cavities. As we all know, in the still of the rectification column, the concentration of the liquid coming down from the bottom tray is the ...

AI Technical Summary

Problems solved by technology

Although the raffinate is a part of the liquid from the vapor-liquid reflux inlet 6 of the reboiler here, its concentration is relatively low, but the other side of the tower kettle 2 cannot guarantee that the liquid with the highest concentration coming down from the bottom tray 5 all enters the re-boiler. Boiler, resulting in a decrease in the concentration of the liquid entering the reboiler, reducing the gas concentration in the stripping section of the rectification column from the vapor-liquid reflux inlet 6 of the reboiler, which affects the enrichment effect of the reboiler. unfavorable distillate separation

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