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Gas absorption tower and application method thereof

A gas absorption and liquid absorption technology, applied in the process field, can solve the problems of unsatisfactory gas-liquid dispersion effect, affecting the production efficiency of bubble tower, and small gas-liquid phase contact area, etc., to achieve uniform size, simple structure, increase gas The effect of liquid contact area

Inactive Publication Date: 2014-12-03
SONGXIAN EXPLOITER MOLYBDENUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the optimization operation of the above-mentioned bubble towers, whether it is to increase the injection pipe, spray cooling first, stir at the bottom of the tower, bubble-spray combination or multi-stage diversion, the bubbles are all formed from a certain horizontal position in the tower. Then move upwards to contact with the liquid to absorb, the gas-liquid dispersion mainly depends on the turbulent kinetic energy formed by the buoyancy of the gas entering the tower, its energy is small, the gas is easy to gather and difficult to disperse, the bubble size in the tower is large, and the gas-liquid phase contact area per unit volume Small, affecting the production efficiency of the bubble tower, and the gas-liquid dispersion effect is not ideal

Method used

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  • Gas absorption tower and application method thereof
  • Gas absorption tower and application method thereof

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Embodiment approach 1

[0047] Such as Figure 1-2 As shown, the gas absorption tower of the present invention is provided with three groups of gas absorption devices 1, and the three groups of gas absorption devices 1 share the tower body 2, and the tower body 2 is vertically cylindrically arranged, and the tower body 2 and the three groups of gas absorption devices 1 all adopt Made of stainless steel;

[0048] The upper and lower sides of the tower body 2 are respectively provided with an upper tower cover 5 and a lower tower cover 3, a gas inlet 4 is provided on the lower tower cover 3, and a gas outlet 6 is provided on the upper tower cover 5;

[0049] The gas absorption device 1 has an orifice 7 and more than three gas absorption pipes 8; the orifice 7 is a circular plate with mounting holes, which is horizontally arranged in the tower body 2 and fixedly connected with the inner wall of the tower body 2, so that the orifice plate 7 Divide the gas absorption device 1 into two parts, namely the g...

Embodiment 1

[0060] Gas to be absorbed: SO 2 Exhaust gas, 2000mg / m 3 .

[0061] Absorbing solution: 10-30% NaOH solution.

[0062] Gas absorption tower: made of stainless steel; the tower body is vertical, the height is 2100mm, and the tower body diameter is 1000mm; there are three sets of gas absorption devices in the tower body, each with a separate liquid level gauge, liquid replenishment port and emptying port ; 25 gas absorption tubes, 500mm high, 0.05μm absorption hole diameter.

[0063] Implementation process: pressurized, cooled SO 2 The exhaust gas continuously enters the gas absorption tower, and is respectively contacted with NaOH solution in the lower, middle and upper gas absorption devices for gas absorption, and the clean gas after three-stage gas absorption is discharged into the atmosphere.

[0064] Implementation results: SO in gas outlet exhaust 2 ≤68mg / m 3 , to meet environmental protection emission requirements.

Embodiment approach 2

[0066] Such as image 3 As shown, the gas absorption tower of the present invention is provided with three groups of gas absorption devices 1, and the three groups of gas absorption devices 1 share the tower body 2, and the tower body 2 is vertically cylindrically arranged;

[0067] A left tower cover 15 and a right tower cover 14 are respectively provided on the left and right sides of the tower body 2, a gas inlet 4 is provided on the right tower cover 14, and a gas outlet 6 is provided on the left tower cover 15;

[0068] The gas absorption device 1 has an orifice plate 7 and more than three gas absorption pipes 8; the orifice plate 7 is a circular plate with installation holes, which is vertically arranged in the tower body 2, and is fixedly connected with the inner wall of the tower body 2 in the form of sealing welding The gas absorption tube 8 has a single-ended opening, and its open end is sealed and fixed on the mounting hole of the orifice plate 7 by means of sealing...

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Abstract

The invention relates to processes of absorbing, washing and treating waste gas in the technical field of chemical industry, oil refining and environmental protection and in particular relates to a gas absorption tower and an application method thereof. The gas absorption tower comprises a gas absorption device (1), wherein the gas absorption device (1) is provided with a pore plate (7) and more than three gas absorption tubes (8); opening ends of the gas absorption tubes (8) are fixed in mounting holes of the pore plate (7); absorption holes are uniformly formed in the gas absorption tubes (8); the pore plate (7) is used for partitioning the gas absorption device (1) into a gas absorption area (9) and a to-be-absorbed gas area (10). As the gas absorption tower is used for absorbing the gas, the contact area between a gas phase and a liquid phase in unit volume can be increased; the gas absorption is improved and the production efficiency is improved; the gas absorption tower is simple in structure, convenient and flexible to mount, environmental friendly and economical; the requirement of variety in industrialized application are met; the requirement quantity of absorption liquid is reduced; the production cost is reduced; discharged gas can be fully purified during treating of the waste gas.

Description

technical field [0001] The invention relates to technical processes such as absorption, washing, and waste gas treatment in the technical fields of chemical industry, oil refining, and environmental protection, and specifically relates to a gas absorption tower and a use method thereof. Background technique [0002] In the fields of chemical industry, oil refining, environmental protection, etc., it is necessary to perform gas-liquid reaction or waste gas treatment through physical absorption or chemical absorption of gas through the gas-liquid mass transfer process. Gas absorption towers are widely used due to their large processing capacity. Among gas absorption towers, compared with packed towers, bubble towers (also known as bubbling gas absorption towers) have smaller pressure drop, simple equipment structure, can form laminar flow and mild gas-liquid contact conditions, and have a higher utilization rate. The traditional bubble column is equipped with several layers of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/18B01D53/78B01D53/50B01D53/62B01D53/52B01D53/68B01D53/58
Inventor 赵维根楚慧慧杜苗苗曾中方
Owner SONGXIAN EXPLOITER MOLYBDENUM
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