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Organic waste gas treatment system for process of recycling etching liquid

A technology of organic waste gas and treatment system, applied in the field of treatment system, can solve the problems of operators and hidden dangers in the atmosphere, and achieve the effects of long service life, cost saving and simple structure

Inactive Publication Date: 2014-03-12
CHENGDU HONGHUA ENVIRONMENTAL SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the etching solution contains a large amount of toxic and harmful substances, it volatilizes into the air to produce a large amount of toxic gas, including organic waste gas, which is a great hidden danger to operators and the atmosphere.

Method used

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  • Organic waste gas treatment system for process of recycling etching liquid
  • Organic waste gas treatment system for process of recycling etching liquid

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Embodiment

[0017] like figure 1 , figure 2 As shown, the organic waste gas treatment system applied to the etching liquid recovery process includes a hollow processing tower 3, and the two ends of the processing tower 3 are respectively provided with an air inlet 7 and an air outlet 1, and the air outlet 1 is arranged at the inlet The top of the air port 7; the inside of the processing tower 3 is provided with several chemical boxes, and the chemical boxes can move laterally in the processing tower 3, and several lamp tubes 5 are arranged above each chemical box. The gas is introduced from the air inlet 7, and the vacuum wave ultraviolet light generated by the lamp tube 5 is used as an energy source to activate the photocatalyst, drive the "oxidation-reduction" reaction, use the oxygen in the air as the oxidant, and effectively degrade the toxic organic waste gas. The non-toxic gas is exhausted to the atmosphere through the gas outlet 1.

[0018] Both the end face size of the air inle...

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Abstract

The invention discloses an organic waste gas treatment system for a process of recycling etching liquid. The organic waste gas treatment system comprises a treatment tower with the hollow inside, a gas inlet and a gas outlet are respectively arranged at two ends of the treatment tower, the gas outlet is positioned above the gas inlet, a plurality of chemical agent boxes are arranged in the treatment tower, the chemical agent boxes can horizontally move in the treatment tower, and a plurality of lamp tubes are positioned above each chemical agent box. The system is simple in structure and simple and convenient in principle, organic waste gas in the air can be directly oxidized into non-toxic and harmless materials through photo-catalytic oxidation to avoid any secondary pollution, some organisms which are difficult to oxidize by ozone can be effectively resolved, the treatment system has effect on various organisms from hydrocarbon to carboxylic acid, service life of the treatment system is long, cost is saved, and replacement frequency is reduced.

Description

technical field [0001] The invention relates to a treatment system, in particular to an organic waste gas treatment system applied to the etching liquid recovery process, which belongs to an environmental protection system. Background technique [0002] The typical process of printed circuit board (PCB) processing adopts the "pattern plating method". That is to pre-plate a layer of lead-tin corrosion layer on the copper foil part that needs to be reserved on the outer layer of the board (the graphic part of the circuit), and then chemically corrode the rest of the copper foil, which is called etching. PCB etching is divided into two types: alkaline and acidic, one is hydrochloric acid hydrogen peroxide system (acidic); the other is ammonium chloride ammonia water system (alkaline). Alkaline etching solution is mainly suitable for the etching of graphic electroplating metal resist layers, such as printed boards plated with gold, nickel, tin-lead alloy, tin-nickel alloy and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/44
Inventor 韦建敏张小波赵兴文张晓蓓
Owner CHENGDU HONGHUA ENVIRONMENTAL SCI & TECH CO LTD
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