Parallel suspension multi-downcomer tower plate

A technology of downcomers and trays is applied in the field of parallel suspension multi-downcomer trays, which can solve the problems of increasing the structural complexity of the trays and affecting the uniformity of the flow field.

Active Publication Date: 2021-08-17
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These structures improve the distribution of the liquid flow field on the multi-downcomer tray to a certain extent, but the flow guide d

Method used

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  • Parallel suspension multi-downcomer tower plate
  • Parallel suspension multi-downcomer tower plate
  • Parallel suspension multi-downcomer tower plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In a plexiglass tower with a plate spacing of 600mm and a diameter of 1219mm, parallel suspension multi-downcomer trays are installed in the form of "A plate-B plate-A plate-B plate" up and down, and the uppermost layer is a hot water distribution plate , the second layer is the water inlet plate, which is also the primary cold water distribution plate, the third layer is the cold water redistribution plate, and the bottom layer is the test plate; Arranged in an equilateral triangle; the area of ​​the downcomer 101 on the first side is 192cm 2 , the area of ​​the first eccentric downcomer 102 is 248cm 2 , the area of ​​the first central downcomer 103 is 240cm 2 ; The area of ​​the second side downcomer 201 is 60cm 2 , The area of ​​the second eccentric downcomer 202 is 200cm 2 , the area of ​​the second central downcomer 203 is 400cm 2 . The liquid-phase water is used as the operating system. The cold water enters the tower from the water inlet plate through the ce...

Embodiment 2

[0037] In the plexiglass tower with a plate spacing of 600mm and a diameter of 1219mm, install parallel suspension multi-downcomer towers in the form of "A plate-B plate-A plate" and "B plate-A plate-B plate" respectively. The middle tray is a test tray, the lower tray is a gas distribution plate, and the upper tray is a liquid distribution plate; the opening ratio of the trays is 18.96%, and the adjacent solid valves 3 are arranged in a regular triangle; The area of ​​the first downcomer 101 is 192cm 2 , the area of ​​the first eccentric downcomer 102 is 248cm 2 , the area of ​​the first central downcomer 103 is 240cm 2 ; The area of ​​the second side downcomer 201 is 60cm 2 , The area of ​​the second eccentric downcomer 202 is 200cm 2 , the area of ​​the second central downcomer 203 is 400cm 2 , Install a mist collector above the upper tray. With air and water as the operating system, the spray density is 60m 3 / (m 2 h), measure the mist entrainment of A-type tray 1 a...

Embodiment 3

[0040] In the plexiglass tower with a plate spacing of 600mm and a diameter of 1219mm, install parallel suspension multi-downcomer towers in the form of "A plate-B plate-A plate" and "B plate-A plate-B plate" respectively. The middle tray is a test tray, the lower tray is a gas distribution plate, and the upper tray is a liquid distribution plate; the opening ratio of the trays is 18.96%, and the adjacent solid valves 3 are arranged in a regular triangle; The area of ​​the first downcomer 101 is 192cm 2 , the area of ​​the first eccentric downcomer 102 is 248cm 2 , the area of ​​the first central downcomer 103 is 240cm 2 ; The area of ​​the second side downcomer 201 is 60cm 2 , The area of ​​the second eccentric downcomer 202 is 200cm 2 , the area of ​​the second central downcomer 203 is 400cm 2 ; Install a liquid leakage collector below the lower tray. With air and water as the operating system, the spray density is 60m 3 / (m 2 h), measure the leakage rate of the paral...

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Abstract

The invention discloses a parallel suspension multi-downcomer tower plate and belongs to the technical field of chemical equipment. The tower plate is arranged in a tower body and comprises a tower tray plate and downcomers, a valve hole is formed in the tower tray plate, a fixed valve is arranged in the valve hole, and a plurality of parallel suspension downcomers are arranged on the tower tray plate. The downcomers are arranged on the tower tray plate in two structural arrangement modes of A-type tower plates and the B-type tower plates, the A-type tower plates and the B-type tower plates are alternately stacked up and down in the tower body, and the downcomers on the tower plates are shorter, so that the transverse liquid velocity gradient is reduced; the downcomers are arranged in parallel, the distances from a liquid receiving area to inlet weirs on the two sides are equal, and the liquid receiving area is in a long and narrow rectangle shape, so that liquid on the plate flows in a manner closer to plug flow; the downcomers are alternately arranged, and the design of the tower plate follows the principle of equal flow channel length; the bubbling area is used for directly receiving liquid on the tower plate, so that the gas-phase operation load is improved; and the plurality of downcomers are arranged, so that the influence of an arch-shaped area on flowing is reduced, gas-liquid distribution is more uniform, and gas-liquid phase contact is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of chemical equipment, and in particular relates to a multi-downcomer tray suspended in parallel. Background technique [0002] According to the overflow method, the trays are mainly classified into single overflow trays, U-shaped flow trays, double overflow trays and multiple overflow trays. With the advancement of science and technology, industries such as petrochemical, oil refining and chemical fertilizers are gradually developing in the direction of large-scale and collectivization. As a kind of mass transfer equipment used for rectification and absorption, the scale of a single tray is getting larger and larger, but simply expanding the diameter of the tray can no longer meet the industrial needs, its space utilization rate is low, and the investment is high , high energy consumption and other characteristics seriously restrict the improvement of economic benefits. The development of a new type of mu...

Claims

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Application Information

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IPC IPC(8): B01D3/16B01D47/14B01D53/18
CPCB01D3/166B01D47/14B01D53/18Y02E10/72
Inventor 姚克俭李继柠
Owner ZHEJIANG UNIV OF TECH
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