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Efficient large-flux fixed valve tray

A fixed-valve, high-throughput technology, applied in distillation and separation, chemical instruments and methods, separation methods, etc., can solve the problem of reducing tray processing capacity and operating flexibility, reducing tray operating flexibility, and reducing tray mass transfer Efficiency and other issues, to achieve the effect of improving mass transfer efficiency and operating flexibility, improving processing capacity and operating flexibility, and improving mass transfer efficiency of trays

Inactive Publication Date: 2004-06-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the fixed valve trays mentioned in patents US5,360,583, US5,147,584, US5,975,504, etc., the air flow is blown into the liquid layer in the horizontal direction from the fixed valve side hole, and is different from that from the adjacent fixed valve side hole. The ejected airflow occurs in the middle of the two fixed valves (such as Figure 8 As shown), the two opposite airflows not only make the liquid on the tray splash upward, increase the entrainment of liquid foam, reduce the processing capacity and operating flexibility of the tray, but also consume a lot of energy and increase the pressure drop of the tray
At the same time, the air flow blows into the liquid layer in the horizontal direction, and the liquid will be blown into the side hole of the adjacent fixed valve to become liquid leakage, which increases the amount of liquid leakage, reduces the operating flexibility of the tray, and reduces the mass transfer efficiency of the tray.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The high-efficiency and large-flux fixed-valve tray is characterized in that the high-efficiency and large-flux fixed-valve tray is composed of a tray 1, a fixed valve 2 and a downcomer 3. The fixed valve 2 is formed by direct punching of the tray 1 body, and the fixed valve 2 is composed of fixed valve face 4, liquid-facing valve leg 7 and back-liquid valve leg 9, fixed valve face 4 is connected with tray 1 through liquid-facing valve leg 7 and back-liquid valve leg 9, and fixed valve face 4 has The fixed valve flange 6 bent downwards, the downward bending angle of the fixed valve flange 6 is 15°, the fixed valve flange edge 12 of the fixed valve flange 6 is 3 to 10mm away from the plate surface of the tray 1, and the fixed valve 2 After the tray 1 is punched out, the fixed valve hole 13 is formed on the tray 1, the fixed valve flange edge 12 of the fixed valve flange 6, the edge of the liquid-facing valve leg 7, the edge of the back-liquid valve leg 9 and the fixed val...

Embodiment 2

[0022] The high-efficiency and large-flux fixed-valve tray is characterized in that the high-efficiency and large-flux fixed-valve tray is composed of a tray 1, a fixed valve 2 and a downcomer 3. The fixed valve 2 is formed by direct punching of the tray 1 body, and the fixed valve 2 is composed of fixed valve face 4, liquid-facing valve leg 7 and back-liquid valve leg 9, fixed valve face 4 is connected with tray 1 through liquid-facing valve leg 7 and back-liquid valve leg 9, and fixed valve face 4 has The fixed valve flange 6 bent downwards, the downward bending angle of the fixed valve flange 6 is 35°, the fixed valve flange edge 12 of the fixed valve flange 6 is 3-10mm away from the plate surface of the tray 1, and the fixed valve 2 After the tray 1 is punched out, the fixed valve hole 13 is formed on the tray 1, the fixed valve flange edge 12 of the fixed valve flange 6, the edge of the liquid-facing valve leg 7, the edge of the back-liquid valve leg 9 and the fixed valve ...

Embodiment 3

[0024]The high-efficiency and large-flux fixed-valve tray is characterized in that the high-efficiency and large-flux fixed-valve tray is composed of a tray 1, a fixed valve 2 and a downcomer 3, and the fixed valve 2 is formed by direct punching of the tray 1 body, and the fixed valve 2 is composed of the fixed valve face 4, the liquid-facing valve leg 7 and the back-liquid valve leg 9, the fixed valve face 4 is connected with the tray 1 through the liquid-facing valve leg 7 and the back-liquid valve leg 9, and the fixed valve face 4 has The fixed valve flange 6 bent downwards, the downward bending angle of the fixed valve flange 6 is 50°, the fixed valve flange edge 12 of the fixed valve flange 6 is 3 to 10 mm away from the plate surface of the tray 1, and the fixed valve 2 After the tray 1 is punched out, the fixed valve hole 13 is formed on the tray 1, the fixed valve flange edge 12 of the fixed valve flange 6, the edge of the liquid-facing valve leg 7, the edge of the back-...

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PUM

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Abstract

The present invention relates to a high-effective large-flux fixed valve tower tray. It is formed from column plate, fixed valve and down-pipe. The fixed valve is formed by directly stamping the column plate self-body, and said fixed valve is composed of valve surface of fixed valve and valve leg of fixed valve, the valve surface is connected with column plate by means of valve leg of fixed valve, and the valve surface of the fixed valve has a downward bent folded edge. Said invented structure can raise treatment capacity of tower tray and its operation elasticity, at the same time the gas-liquid contact on the plate can be intensified so as to raise column plate mass transfer efficiency.

Description

technical field [0001] The invention relates to a high-efficiency and large-flux fixed valve tray, which is mainly used in various fractionation towers, absorption towers and desorption towers in industries such as oil refining, chemical industry, petrochemical industry and light industry. technical background [0002] Before the present invention is made, the trays in the prior art include sieve trays, valve trays, fixed valve trays and the like. The sieve tray has the advantages of low pressure drop, not easy to block, convenient processing, low cost, and no need for maintenance. However, the sieve tray has the disadvantages of large mist entrainment, serious liquid leakage, small operating flexibility, and low mass transfer efficiency. The valve tray overcomes some shortcomings of the sieve tray, and has the advantages of large operating flexibility, small mist entrainment, less liquid leakage, and high mass transfer efficiency. However, the valve tray has a large amoun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/20
Inventor 姚克俭王良华俞晓梅
Owner CHINA PETROLEUM & CHEM CORP
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