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Plated tower

A plate tower, a new type of technology, applied in the field of chemical production equipment, plate tower, can solve the problems of small contact area, short contact time, low heat transfer, mass transfer efficiency, etc., to increase the opening area, increase the opening rate, The effect of improving the gas flow capacity

Inactive Publication Date: 2009-11-04
NANJING COLLEGE OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this traditional plate tower, especially when the gas phase load is low, the contact area of ​​the gas-liquid two-phase is small, the contact time is short, and the heat transfer and mass transfer efficiency is low

Method used

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  • Plated tower

Examples

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Embodiment

[0018] In the laboratory, a common sieve tray is used to separate the ethanol-water mixed solution. The inner diameter of the rectification tower is 80 mm, 12 trays are installed in the tower, and the tray spacing is 50 mm. The feed contains 63% ethanol (mass percentage, the same below), the reflux ratio is 3, and it is operated at normal pressure. After stabilization, it is measured that the top distillate contains 90% ethanol and the bottom residue contains 5% ethanol.

[0019] The new type plate tower described in the present invention is used instead. Ordinary sieve plates are installed in the tower, the number of plates is reduced to 10, the area of ​​the plate opening area is increased by 10%, the distance between the plates is reduced to 40 mm, the downcomer plate is provided with rectangular guide holes, and the opening rate is 20%. , The effective height of the tower (tray spacing × number of trays) is reduced from the original 600 mm to 400 mm. After stabilization, it is...

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Abstract

The invention relates to a novel plate tower in chemical production, comprising: tower wall, gas inlet, gas outlet, liquid inlet, tower kettle, liquid outlet, tray and downcomer, characterized in that the downcomer consists of The downcomer plate is composed of a tower wall, and the downcomer plate is a rectangular plate with holes, and the downcomer plate is opened with circular, rectangular or other shaped holes, and is tightly combined with the tower plate without gaps. By adopting the plate tower of the present invention, the opening ratio of the downcomer plate can be increased to improve the liquid flow capacity of the downcomer; the opening area of ​​the plate can be increased, and the gas-liquid can be optimized while improving the production capacity of the plate tower. The contact of the two phases in the plate tower improves the heat transfer and mass transfer efficiency of the gas-liquid two phases in the plate tower, so as to reduce the height and diameter of the tower.

Description

Technical field: [0001] The invention relates to a chemical production equipment, in particular to a plate tower 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] Plate tower is a common equipment for gas-liquid heat and mass transfer processes. The gas-liquid two-phase flow behavior in the tower has an important influence on the heat and mass transfer efficiency of the plate tower. At present, all the plate towers operating in chemical production flow downwards from the downcomer, enter from the gap between the downcomer and the lower tray, and horizontally pass through the lower tray, so that it flows repeatedly to the bottom of the tower. The thickness of the liquid layer on the tray is determined by the height of the outlet weir, and the gas passes through the openings on the tray from bottom to top, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D3/18
Inventor 丁志平季锦林
Owner NANJING COLLEGE OF CHEM TECH
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