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Stereo mass transfer liquid co-flow tower

A technology of three-dimensional mass transfer and mass transfer tower, which is applied in the field of gas-liquid contact equipment, can solve the problems that have not been seen, the reduction of separation efficiency and reflux ratio of parallel flow trays, equipment and technical economic problems, etc., and achieve low liquid level gradient, The effect of reducing the diameter of the tower body and increasing the effective mass transfer area

Active Publication Date: 2010-12-08
SHIJIAZHUANG GONGDA CHEM EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 1981, Jenkins first proposed the parallel flow tower structure of Parastillation, and conducted experimental research on it. Under the same separation requirements, the separation efficiency of the parallel flow tray was greatly improved, and the required reflux ratio was also greatly reduced; later generations The column type has been further studied and improved, and the result proves that the co-flow structure can significantly promote the improvement of the tray efficiency of the rectification column, but due to the problems of equipment and technical economy, this type of tray has not been seen so far. reports on industrialization

Method used

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  • Stereo mass transfer liquid co-flow tower
  • Stereo mass transfer liquid co-flow tower
  • Stereo mass transfer liquid co-flow tower

Examples

Experimental program
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Effect test

Embodiment 1

[0026] This example figure 1 Shown is a double helix liquid co-current column used for the purification of alcohol. It includes a tower body 1 and a multi-layer continuous mass transfer tray arranged in the tower body 1. Each layer of continuous mass transfer tray includes a tray 2 provided with a riser hole 21, a cap 5 above the riser hole and a downcomer. system.

[0027] Each continuous mass transfer tray is divided into two independent parts, and each independent tray 2 is provided with a set of downcomer system. The downcomer system is a splint-type downcomer, and two sets of downcomers are arranged in the same direction in the same direction as the diameter of the tower body 1 . Each set of downcomers includes baffled downcomer I 31, downcomer II 32, downcomer baffle 33 and overflow weir 4, and the downcomer channel between the downcomer I and downcomer II arranged in parallel 6. The top of the downcomer channel is provided with an overflow weir 4 perpendicular to the...

Embodiment 2

[0032] This example figure 2 Shown is a three-dimensional mass transfer liquid parallel flow tower, the difference from Example 1 is that each layer has only one continuous mass transfer tray, and the downcomer system of the continuous mass transfer tray is arranged on the same side of the tower body, It includes the downcomer plate I 31, the middle liquid receiving plate 36, the main liquid receiving plate 37 and the downcomer baffle 33; the downcomer baffle 33 is located on the longitudinal center line of the downcomer plate I and is vertically arranged with the downcomer plate I, The downcomer baffle is arranged vertically with the main liquid receiving plate, the top of the downcomer baffle 33 is connected to one end of the middle liquid receiving plate 36, and the lower end is connected to the main liquid receiving plate 37; the middle liquid receiving plate is located at the transverse center of the downcomer plate I The line is perpendicular to the downcomer plate I, t...

Embodiment 3

[0035] This example image 3 Shown is a kind of three-dimensional mass transfer liquid cocurrent flow tower, and embodiment The difference is that the downcomer system includes a central downcomer 34, a middle liquid receiving plate 36, a downcomer baffle 33, a guide tube 39 and an annular liquid receiving plate 38; the middle liquid receiving plate and the central downcomer are arranged in a circle An overflow weir 4 is provided on the tray corresponding to the inlet of the central downcomer; the central downcomer passes through the center of the tray and is located above the middle liquid receiving pan, and the diameter of the central downcomer is smaller than the diameter of the middle liquid receiving pan ; The peripheral interval of the liquid receiving plate in the middle is vertically provided with a guide tube 39, and a downcomer baffle 33 is arranged between each guide tube, and the guide tube is an upper opening channel steel, and the bottom height of the guide tube...

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Abstract

The invention relates to a stereo mass transfer liquid co-flow tower, which is a gas-liquid contact device used in processes of mass transfer, heat transfer and the like in the fields of chemical engineering, oil refining, petrifaction, pharmacy, environmental protection and the like. The tower comprises a tower body and multilayer continuous mass transfer tower plates; each layer of continuous mass transfer tower plate comprises a tower plate, a stereo mass transfer element and a down-flow system; and the down-flow system of the continuous mass transfer tower plate enables liquid on each layer of tower plate in the tower to flow in the same direction so that a retention area is not left on the tower plate, an effective mass transfer area is enlarged, the treatment capability is increased, the average push force of gas-liquid transfer on the tower plates is improved and the mass transfer efficiency of the tower plates is further improved.

Description

technical field [0001] The invention relates to a gas-liquid contact device, in particular to a liquid co-current tower commonly used in mass transfer, heat transfer and other processes in chemical industry, oil refining, petrochemical, pharmaceutical, environmental protection and other fields. Background technique [0002] At present, most of the gas-liquid contact equipment used in the processes of mass transfer (such as rectification, absorption, desorption, gas stripping, etc.) and heat transfer in the fields of petroleum, chemical industry, pharmaceuticals, and environmental protection are plate towers. Sieve plate type, float valve type and bubble cap type are the basic types of liquid-phase continuous trays. Multi-layer trays are arranged in a cylindrical tower body, and some mass transfer elements are also arranged on the trays. Some newly developed trays are also improved forms of these trays. These trays have small processing capacity, low tray efficiency, large pr...

Claims

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Application Information

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IPC IPC(8): B01D3/18B01D53/18C07C29/82
Inventor 张继军孙义峰
Owner SHIJIAZHUANG GONGDA CHEM EQUIP
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