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Method for unwanted exhaust gas purification and dedicated apparatus

A special device and harmful gas technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problems of large amount of adsorbent, catalyst poisoning, adsorbent regeneration, etc., to improve absorption efficiency and easy operation The effect of using and preventing secondary pollution

Inactive Publication Date: 2007-02-07
黄立维
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned methods all have their own unavoidable shortcomings. Among them, the condensation method is mainly used for the removal of high-concentration organic matter; the combustion method (including catalytic combustion method) can effectively decompose harmful gases, but the system has higher requirements for operating conditions. High operation, investment and operation costs above 200°C
Especially for exhaust gases containing sulfur and chlorine, it is easy to cause catalyst poisoning; the adsorption method has a high removal efficiency for low-concentration organic pollutants, but the adsorbent needs to be regenerated, which cannot achieve the purpose of decomposing harmful gases. and other methods are used together, and when dealing with large volumes of adsorbents, the amount of adsorbent is large and the volume is huge

Method used

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  • Method for unwanted exhaust gas purification and dedicated apparatus
  • Method for unwanted exhaust gas purification and dedicated apparatus
  • Method for unwanted exhaust gas purification and dedicated apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: Experimental device system flow such as figure 1 Shown, the electrocatalytic oxidation reactor is shown in Figure 2. The structural size of the reactor is 400mm×400mm×1200mm, and it is composed of 6 sets of mesh electrode units superimposed, and the distance between the plates is 50mm. Mesh anode material is RuO 2 / Ti, the mesh cathode material is stainless steel. The size of the electrode mesh is 380mm×380mm, the thickness is 3mm, and the electrode mesh is 5mm×5mm. The absorption tower is a packed tower with a tower diameter of Φ500mm and a packing layer height of 2500mm. The simulated exhaust gas enters through the air inlet at the bottom of the tower, passes through the absorption reaction zone, and is discharged from the upper part.

[0034] The experimental conditions are: power supply parameters: DC voltage 10V, current 60A

[0035] Gas flow: 500m 3 / h, gas temperature: 25°C

[0036] Circulation pump flow: 10m 3 / h, sodium hydroxide solution,...

Embodiment 2

[0039] Embodiment 2: other conditions are the same as embodiment 1, and the power supply parameter becomes DC voltage 16V, electric current 100A,

[0040] Experimental results: as shown in Table 2

[0041]

Embodiment 3

[0042] Embodiment 3: experimental device system flow such as figure 1Shown, the electrocatalytic oxidation reactor is shown in Figure 3. The structural size of the reactor is 400mm×400mm×1200mm, and it is composed of 2 sets of flat electrodes, each set of electrodes is composed of 6 pairs of units, separated by a fluid distributor between the two sets. The plate anode material is RuO 2 / Ti, the flat cathode material is stainless steel. The electrode size is 190mm×380mm, and the plate thickness is 3mm. The distance between the electrode plates is 50mm. The absorption tower is a packed tower with a tower diameter of Φ500mm and a packing layer height of 2500mm. The simulated exhaust gas enters through the air inlet at the bottom of the tower, passes through the absorption reaction zone, and is discharged from the upper part.

[0043] The experimental conditions are: power supply parameters: DC voltage 15V, current 100A,

[0044] Gas flow: 500m 3 / h, gas temperature: 25°C ...

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Abstract

The invention relates to a method for purifying harmful waste gas, wherein it uses adsorption combined electric catalysis oxidation method to remove the organics as mellow, ketone, etc from the airflow; and it comprises: guiding the processed airflow into adsorption tower; the organics will be adsorbed by the cycle adsorption liquid; in the electric catalysis oxidization reactor, processing electric catalysis oxidization reaction on the adsorption liquid, to oxidize the adsorb product into stable material, to regenerate the adsorption liquid, to purify the gas. The invention also discloses a relative device, with simple structure, easy operation and high efficiency.

Description

technical field [0001] The invention belongs to the technical field of a purification method and a related treatment device for removing organic substances such as alcohol, ether, aldehyde, phenol, ketone or ester contained in a gas stream. Background technique [0002] Organic waste gas containing alcohol, ether, aldehyde, phenol, ketone or ester, etc., produced in various production processes such as chemical, pharmaceutical, painting, sewage treatment stations, etc. These pollutants are not only harmful to the human body, some are carcinogens, and a large amount of discharge has also had a serious impact on the local area environment. However, because these gases either have a relatively stable chemical structure and are not easy to degrade, or have a low threshold, it brings great difficulties to the purification process. [0003] Generally, the absorption method is one of the main methods to remove low-concentration water-soluble organic substances such as alcohols, et...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14B01D53/72B01D53/86
Inventor 黄立维
Owner 黄立维
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