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Method for setting gas-liquid cntacting combined components and knockout tower of mass transfer of using the method

A combined element and gas-liquid contact technology, which is applied in the field of mass transfer separation towers, can solve problems such as affecting the number or opening ratio of injection holes, affecting the efficiency of transfer and mass transfer, and affecting the working efficiency of gas-liquid contact devices, etc. To achieve the effect of reducing the phenomenon of spraying, easy to popularize and implement, and reduce the amount of entrained mist

Inactive Publication Date: 2006-11-29
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But they all have a common defect, that is, the arrangement of the gas-liquid contact device in the mass transfer separation tower is not scientific enough, which affects the working efficiency of the gas-liquid contact device
The described method of arrangement and setting is not scientific enough, which means that the height design of the gas-liquid contacting devices in the prior art is the same, and it is also of the same height after being installed on the tray, which will make two adjacent gas-liquid contacting devices The spray hole produces "contraspray phenomenon" during work, resulting in energy loss, increasing mist entrainment, and affecting mass transfer efficiency
And if in order to avoid this " opposite spray ", increase every row and the distance between two adjacent gas-liquid contacting devices of every column, then must reduce the installation number of gas-liquid contacting devices on the tray, that is to say, reduce the key The number of working components means that the efficiency of the mass transfer separation column is reduced
In addition, the existence of "contraspray phenomenon" also affects the number or opening ratio of the spray holes on the spray plate or spray cover, which in turn affects the mass transfer and exchange efficiency of transfer and exchange.

Method used

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  • Method for setting gas-liquid cntacting combined components and knockout tower of mass transfer of using the method
  • Method for setting gas-liquid cntacting combined components and knockout tower of mass transfer of using the method
  • Method for setting gas-liquid cntacting combined components and knockout tower of mass transfer of using the method

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Effect test

Embodiment 1

[0022] Vinyl chloride monomer low-boiling rectification tower (the original tower diameter is 600mm), adopts F1 type float valve tray, the number of trays is 38, the tray is single overflow type, the cross section of the downcomer is bow-shaped, and the overflow weir The length is 456mm, and the board spacing is 300mm. Its production capacity is 30,000 tons of PVC / year, and the product contains C 2 h 2 Amount ≤ 10 ~ 20ppm. The low-boiling tower was transformed with a vertical sieve tray tower (only the trays were replaced, and other factors such as tower diameter, number of trays, and plate spacing remained unchanged), and the production capacity was increased to 55,000 tons of PVC / year. Contains C 2 h 2 The amount drops to 0 (it cannot be detected by the instrument, the same below), and the plate resistance drops to about 60% of the original. Another low-boiling tower of the same type transformed by the vertical sieve plate by adopting the method of the present invention...

Embodiment 2

[0024] Saturated hot water tower (in the chemical fertilizer industry, the conversion gas heat is recovered, and the heat is converted into water vapor to saturate the semi-water gas, which is an operation combining heat transfer and humidification), the original tower diameter is 2200mm, and the saddle-type packing is used (The height of the filler layer in the saturated section is 5.0m, and the height of the filler layer in the hot water section is 4.5m). Under the condition that the water vapor saturation of semi-water gas is ≥95%, the production capacity is 55,000 tons of NH 3 / year of semi-water gas (21600Nm 3 / h) and shift gas (27000Nm 3 / h). On the premise that the tower diameter and tower height remain unchanged, 13 and 8 vertical sieve plates are used to replace the original rectangular saddle packing in the saturated section and the hot water section respectively. Also under the condition that the water vapor saturation of semi-water gas is ≥95% , compared with th...

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Abstract

A method for arranging the gas-liquid contact units used for mass-transfer separating tower features that the higher and lower gas-liquid contact units are alternatively installed to the tower plate in line and row directions in such manner that the spray holes for adjacent units are not on same level, a flow-up air hole is made on the tower plate under each unit, and a liquid flowing channel is arranged between said unit and tower plate. Its advantage is high efficiency.

Description

technical field [0001] The invention relates to a manufacturing technology of a gas-liquid continuous contact mass transfer separation tower, specifically a kind of separation tower widely used in the processes of mass transfer (such as rectification, absorption) and heat transfer in the fields of petroleum, chemical industry, pharmacy, environmental protection, etc. A method for setting a gas-liquid contact combination element in a gas-liquid continuous contact mass transfer separation tower and a mass transfer separation tower technology using the method. The international patent classification is proposed to be Int.Cl 7 .B01J19 / 00. Background technique [0002] At present, plate mass transfer separation towers (hereinafter referred to as plate towers) are widely used in the processes of mass transfer, heat transfer, and humidification in the fields of petroleum, chemical industry, pharmaceuticals, and environmental protection. There are many types of plate towers, such ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D3/20
Inventor 杜佩衡董艳河杜剑婷
Owner HEBEI UNIV OF TECH
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