Eccentric diversion window structured packing sheet and packing
A structured packing and window-type technology, which is applied in distillation and separation, chemical/physical/physicochemical processes, chemical instruments and methods, etc., can solve the problems of weakened horizontal mixing and large pressure drop, so as to increase the gas-liquid flux and reduce the Effect of pressure drop and increasing gas-liquid mass transfer area
Active Publication Date: 2013-07-31
TIANJIN UNIV
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Problems solved by technology
However, when the inclination angle of the corrugation direction is large, the radial mixing on the packing sheet is dominant, while the transverse mixing is relatively weakened and the pressure drop is large
Method used
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[0019] The technical characteristics of the eccentric window diversion structured packing of the present invention will be described in more detail below in conjunction with the accompanying drawings:
[0020] An eccentric window flow-guiding structured packing sheet of the present invention is provided with an eccentric window flow-guiding structure at the peaks and troughs of the corrugated packing sheet. A certain included angle, and the included angle is set in the opposite direction of the corrugation inclination of the structured packing sheet, so as to form an eccentric window flow-guiding structure. The corrugation direction of the corrugated packing sheet has an inclination angle with the vertical direction. The distance between adjacent crests and troughs is 10mm to 100mm, and at the same peak or trough in the corrugation direction, the distance between adjacent eccentric diversion windows is 10mm to 100mm. The opening angle of the eccentric diversion window is 30°-...
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The invention relates to an eccentric diversion window structured packing sheet and a packing. The biggest difference between a structured packing and an open-window diversion structured packing lies in that a certain included angle is formed between the axis direction of an opened diversion window and the inclination direction of waves, so that the diversion window has an eccentric structure. Aneccentric diversion window is formed on the wave crest or the wave trough of a wavelike structured packing sheet in a direction opposite to that of the wave crest or the wave trough. The inclination angle of the diversion window is improved, so that the diversion window is axially eccentric, pressure drop can be reduced effectively, transverse mixing degree is increased, gas-liquid transfer area is increased and the turbulence degree of a liquid film is raised. When liquid flows down along a wave direction and flows through the eccentric diversion window which is just positioned below the liquid, so that the performance of the structured packing in a large wave inclination direction is enhanced. Under the condition that high radial mixing efficiency is ensured, transverse mixing capability of the packing sheet is enhanced effectively, liquid film update is realized effectively and gas-liquid transfer rate is raised.
Description
technical field [0001] The invention relates to an eccentric diversion window type structured packing used in gas-liquid mass transfer processes such as rectification and absorption, especially a new type of structured packing that can effectively reduce the pressure drop of a large corrugation inclination and promote the renewal of the liquid film. filler. Background technique [0002] Structured packing is a kind of packing that is neatly stacked according to uniform geometric patterns in the tower. This kind of packing artificially defines the gas and liquid flow paths in the packing layer, which reduces the phenomenon of channel flow and wall flow, and greatly reduces the The pressure drop improves the effect of heat and mass transfer. At present, the more classic structured packing is mostly metal plate corrugated structured packing. When this packing is used for gas-liquid mass transfer operations such as rectification or absorption, the gas-liquid two phases in the p...
Claims
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IPC IPC(8): B01J19/32B01D3/00
Inventor 刘春江李雪段长春袁希钢
Owner TIANJIN UNIV