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Multifunctional downflow structure

A multi-purpose, liquid-reducing technology, applied in the field of column internals, can solve the problems of uneven liquid flow, large liquid holdup, and inability to adjust the liquid residence time, achieve uniform liquid flow, reduce overflow intensity, and solve the problem of liquid retention. effect of time

Active Publication Date: 2018-03-30
洪湖市兴达石化设备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the purpose of the present invention is to provide a multipurpose downcomer structure to solve the problems of uneven liquid flow and inability to adjust liquid residence time and super large liquid holdup in the downcomer structure in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] See figure 1 and figure 2 , a multi-purpose downcomer structure, including a tower body 1, multi-layer trays arranged radially along the tower body 1, and downcomers arranged on both sides of the tray for guiding the liquid in the upper tray 20 to the lower tray 21 The downcomer area 3 and the downcomer area 3 are provided with a downcomer plate 4 along the axial direction of the tower body. The downcomer plate 4 divides the downcomer area 3 into a liquid distribution area 30 close to the tray and a liquid holding area 31 away from the tray. The bottom of the downcomer plate 4 can be bowed to the tower body 1 inner wall and then bent downwards. The bottom of the downcomer plate 4 is not in contact with the bottom of the liquid holding area 31 so that the liquid can flow freely in the liquid holding area 31. circulation, the upper part of the downcomer plate 4 is on the same plane as the end side of the lower tray near the liquid distribution area. Of course, the down...

Embodiment 2

[0035] See image 3 , Figure 4 and Figure 5 , on the basis of embodiment 1, spray device 5 is arranged in liquid holding area 31, and the spray nozzle 50 on the spray device 5 is arranged on the side outer wall of downcomer area 3 near tray, and this spray nozzle 50 faces tower The gas setting in the body 1 rises from bottom to top. The spraying device 5 includes a liquid storage tank 51 , a pressurizing pump 52 arranged on the liquid storage tank 51 , a liquid outlet pipe 53 connected with the pressurization pump 52 , and a spray nozzle 50 communicated with the liquid outlet pipe 53 . The bottom of the liquid storage tank 51 is provided with a liquid inlet 54, which is convenient for the liquid in the liquid holding area 31 to enter the liquid storage tank 51. The liquid inlet 54 is provided with a one-way valve 55, and the opening of the one-way valve 55 faces the storage tank. The liquid tank 51 is arranged so that the liquid entering the liquid storage tank 51 does no...

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PUM

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Abstract

The invention provides a multifunctional downflow structure, which comprises a tower body, multiple layers of tower plates arranged along the radial direction of the tower body, and downcomer areas arranged on two sides of the tower plates for guiding the liquid of the upper-layer tower plate to the lower-layer tower plate; a downflow plate is arranged along the axial direction of the tower body in each downcomer area; each downcomer area is segmented into a liquid distribution area near the tower plate and a liquid holding area far away from the tower plate by the downflow plate; a liquid distribution plate for connecting the downflow plate with the side wall of the downcomer area is arranged in the liquid distribution area so as to form a liquid storage tank in the liquid distribution area; the liquid distribution plate is provided with liquid distribution holes; the liquid storage tank is communicated with the liquid holding area. According to the multifunctional downflow structure,liquid flow on the tower plates is even and is high in stability, and the conversion rate of gas-liquid reaction can be improved. In addition, the multifunctional downflow structure has an extra large liquid holding amount, liquid dwell time can be prolonged, a liquid dwell time problem in a reaction rectifying tower can be effectively solved, and the conversion rate of the reaction is improved.

Description

technical field [0001] The invention relates to the technical field of tower internals for gas-liquid mass transfer and heat transfer in the fields of oil refining and chemical industry, and more specifically relates to a multi-purpose downcomer structure. Background technique [0002] Tray tower is one of the chemical equipment that plays an extremely important role in the chemical industry, oil refining, pharmaceutical and other industries. With the development of the chemical industry, the tower internals technology has gradually developed towards new, high-efficiency, large-throughput, low-pressure drop tray technologies, such as: multi-downcomer trays, vertical sieve trays, and gas-liquid co-current composite trays etc., are all new high-efficiency trays that make full use of the three-dimensional space in the tower, increase the gas-liquid mass transfer area, and improve the efficiency of the tray. Among them, the downcomer, as a part of the internal components of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/14B01D3/32B01D47/06B01D50/00B01D45/08
CPCB01D3/14B01D3/32B01D3/324B01D45/08B01D47/06B01D50/40Y02E10/72
Inventor 丰威孙天柏
Owner 洪湖市兴达石化设备制造有限公司