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Double-circular plate tower

A circular and plate tower technology, which is applied in the gas-liquid phase reaction or absorption contact, in the field of chemical production equipment, can solve the problems of insufficient liquid holding capacity, small liquid holding capacity, and inability to adapt, and achieve mass transfer efficiency Improvement, greater operating flexibility, and increased gas-liquid contact area

Inactive Publication Date: 2012-07-18
王健祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, for solution-type mass transfer equipment between liquid and gas, often due to insufficient liquid holding capacity, solids may be precipitated during the process, blocking some channels or even blocking, making the entire tower equipment unable to adapt
The liquid holding capacity of commonly used plate tower equipment is often not large, and is also limited by the operating elastic range, which is prone to solid blockage

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0023] Combined production of thionyl chloride (SOCl 2 ) And phosphorus oxychloride (POCl 3 ) Process, from the top of the tower phosphorus oxychloride (PCl 3 ) Enter, chlorine gas (Cl 2 ) And sulfur dioxide (SO 2 ) Respectively split into the reaction tower system from the bottom of the tower, adjust the ratio of gas and liquid, the reaction completed liquid enters the intermediate tank buffer from the tower bottom to obtain thionyl chloride (SOCl 2 ) And phosphorus oxychloride (POCl 3 ) The product mixture is heated and rectified in the rectifying tower to obtain the product thionyl chloride (SOCl 2 ) And phosphorus oxychloride (POCl 3 ), the product quality reaches the specified standard, and the yield is greater than or equal to 90%.

Embodiment 2

[0025] Certain carbon dioxide (CO 2 ) In the absorption device, the absorption liquid containing sodium carbonate enters the tower from the liquid inlet at the top of the tower, and the gas rich in carbon dioxide enters the tower from the gas inlet at the bottom of the tower. The gas-liquid two phases are in cross-flow contact through the double annular liquid curtain in the tower to carry out phase transfer, and the carbon dioxide gas is transferred from the weather to the liquid phase. The ratio of gas to liquid is adjusted. The reaction completed liquid enters the intermediate tank buffer from the tower kettle to obtain the absorption completed liquid, which is then heated to resolve pure carbon dioxide.

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Abstract

The invention discloses a double-circular plate tower, which comprises a tower wall, a gas inlet, a gas outlet, a liquid inlet, a liquid outlet, a tower column and tower plates, wherein two types of tower plates are provided, the tower plate A is circular, and an outer ring is connected with a tower body closely; and the tower plate B is circular, and an inner ring is closely connected with the tower column. The double circular tower plates are adopted to form two circular liquid curtains which have different sizes, so a larger gas-liquid contact area can be provided under the same tower diameter. Upper weirs and lower weirs are all arranged on the tower plates, so the liquid holdup of the plates is increased, and the double circular liquid curtains are ensured to be formed. The gas-liquid contact area and contact time are increased, the heat and mass transfer efficiencies are improved, and the tower plates have simple structures and are simple to manufacture and operate.

Description

Technical field [0001] The invention relates to a chemical production equipment, in particular to a gas-liquid phase reaction or absorption contact in chemical production. It belongs to the technical field of gas-liquid mass transfer chemical equipment. Background technique [0002] Plate tower is a common equipment for gas-liquid heat and mass transfer processes. The gas-liquid two-phase flow behavior in the tower has an important influence on the heat and mass transfer efficiency of the plate tower. Conventional tower equipment takes into account the engineering factors of gas-liquid mass transfer equipment, and pursues the largest possible specific surface area by transforming the tray structure in the tower body or installing fillers to promote gas-liquid mass transfer. Generally, in the operation of the plate tower in chemical production, the liquid flows downward from the downcomer, enters from the gap between the specially set downcomer and the lower tray, and horizontal...

Claims

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Application Information

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IPC IPC(8): B01J10/00B01D53/18
Inventor 王健祥
Owner 王健祥
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