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Novel packed tower

A packed tower, a new type of technology, used in chemical production equipment, gas-liquid mass transfer such as gas absorption or liquid distillation equipment, can solve the problems of high cost, complex manufacturing process, limited space for optimization, etc., to achieve improved Production capacity, improving separation efficiency, and accelerating the effect of gas-liquid mass transfer rate

Inactive Publication Date: 2008-10-22
NANJING COLLEGE OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, the following two problems have emerged in the optimization of packed towers in this way: 1. Many new high-efficiency packings have complicated manufacturing processes and high costs; 2. The space for further optimization is quite limited

Method used

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  • Novel packed tower

Examples

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Comparison scheme
Effect test

Embodiment 1

[0016] Such as figure 1 A new type of packed tower is shown in which gas outlet 1, liquid inlet 2, baffle plate 3, gas inlet 4, liquid outlet 5 and packing 6. In the packing absorption tower with stainless steel wire mesh corrugated packing, pure water is used to absorb the ammonia in the air-ammonia mixed gas, the operating liquid-to-gas ratio is 1.8 (molar ratio), and the inlet mixed gas contains 2.5% (vol%) of ammonia. The obtained absorption rate is 93%, and the new type of packing tower of the present invention is used, that is, after sintered stainless steel wire mesh round-shaped baffles are installed at certain heights, the measured absorption rate is improved under the condition of other conditions unchanged. To 96%. In addition, in the above two cases, the maximum processing capacity of the test device is 16% higher than that of the former.

Embodiment 2

[0018] This embodiment is still as figure 1 As shown in the figure, the gas outlet 1, the liquid inlet 2, the baffle plate 3, the gas inlet 4, the liquid outlet 5 and the packing 6. In the packing absorption tower with stainless steel wire mesh θ ring, pure water is used to absorb the acetone in the air-acetone mixed gas, the operating temperature is 293K, the operating pressure is 101.3kPa, and the inlet mixed gas contains 3% (vol%) of acetone, The absorption rate of the test device is measured to be 91%. The new type of packing tower of the present invention is used to install sintered stainless steel wire mesh baffles every certain height. Under other conditions unchanged, the test device is tested The absorption rate is increased to 95%. In addition, in the above two cases, the maximum processing capacity of the experimental device is 15% higher than that of the former.

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Abstract

The invention discloses a new packed tower, comprising: 1, arranging hydraulic barriers in every certain distance in the packed tower; 2, the hydraulic barrier is made by cutting a arc from round plate; 3, the hydraulic barrier is made by sintering metallic power multi-porous metal plate or sintering stainless steel wire network; 4, the hydraulic barriers are staggered; 5, the outlets of hydraulic barriers have exit weir. The advantages of said invention are that the flowing speed of air is not limited by liquid flooding to be improved much, and the producing ability of packed tower is improved. In addition, since the flowing speed of air is increased, the mixing function of liquid film is improved to accelerate the refresh of liquid phase surface, which can accelerate the transmission speed of air and liquid to improve the separation efficiency.

Description

Technical field: [0001] The invention relates to an equipment in chemical production, in particular to equipment for gas-liquid mass transfer such as gas absorption or liquid rectification in chemical production. It belongs to the technical field of chemical equipment. Background technique [0002] Packed tower is a common equipment for gas-liquid mass transfer process. The gas-liquid flow behavior in the tower has an important influence on the separation efficiency and production intensity of the packed tower. At present, the packed towers operating in chemical production are all liquid flowing along the surface of the packing from top to bottom, while gas flows in the gaps of the packing from bottom to top, and the gas-liquid two-phase countercurrent contact realizes mass transfer. This traditional gas-liquid contact method has the gas flow velocity restricted by the flooding and cannot be too large, resulting in insufficient stirring power of the gas to the liquid film, which ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D3/26B01D47/14B01D53/18
Inventor 丁志平汤立新蒋丽芬季锦林周灵丹
Owner NANJING COLLEGE OF CHEM TECH