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Waste gas treatment in the storage room of used batteries

Views: 4     Author: Xicheng Ep Ltd     Publish Time: 2022-03-07      Origin: Xicheng Ep Ltd

For the acid mist exhaust gas treatment project in the waste and damaged battery storage room, Xicheng Ep provides the design of the acid mist exhaust gas purification system, the selection of the fan, the installation of the ventilation pipe, and the installation and commissioning of the exhaust gas purification system. The following describes the treatment of acid mist waste gas in the storage room of waste and damaged batteries in a domestic battery factory.

Description of waste gas treatment in waste battery storage room

The acid mist waste gas treatment project in the storage room of waste and damaged batteries is a battery manufacturing business and repair business. The waste gas discharged by this customer during the production and processing process is mainly sulfuric acid mist, etc. If the air contains more such gas, it will cause The air is acidified. If it falls with rain, acid rain will occur. Acid rain will cause damage to buildings, crops and soil. Some developed countries have experienced such acid rain, causing huge losses to the country and people. Clear, otherwise it will affect the environment around us.

Used battery storage room

According to the relevant design basis for waste gas treatment, combined with the waste gas engineering experience done by our company, and according to the relevant national emission standards, the following specific design plans for this type of waste gas are made to provide users with low investment, good treatment effect and convenient operation. process equipment.

Analysis of Air Volume in Waste Battery Storage Room

Exhaust air volume: 7000m3/h

Exhaust gas concentration in used battery storage room

Concentration of components contained in exhaust gas (because the builder did not provide specific exhaust gas components and concentrations, the following is only for design reference):

  • Sulfuric acid mist: ≤500mg/m3

  • HCl: a small amount

  • NOX: a small amount

  • SO2: a small amount

Goal of waste gas treatment in waste battery storage room

  • Emission standard: "Comprehensive Emission Standard of Air Pollutants" (GB16297-1996) secondary standard.

  • Sulfuric acid mist emission standard: 45mg/m3.

  • Equipment service life: >10 years

Exhaust gas treatment plan for used battery storage room

1. Design principles

Adopt a reasonable process route to avoid secondary pollution as much as possible;

It is required to select the equipment for easy maintenance, compact structure and small footprint;

Adopt reasonable processes and procedures to reduce operating costs;

The automation procedure is high, the operation and maintenance are convenient, and the labor intensity is reduced.

2. Design basis

Parameters related to this dust removal system, including air volume, dust concentration, temperature, humidity, etc.

TJ36-79 "Industrial Enterprise Design Hygiene Standard".

GB16297-1996 "Comprehensive Emission Standard of Air Pollutants".

3. Process flow

Acid waste gas - acid mist purification tower - anti-corrosion fan - 15 meters high chimney discharge

4. Process flow description

The acid mist generated in the storage room of the damaged battery enters the PP alkaline wet scrubber by the suction effect of the fan, and is sprayed several times by special absorbent for gas-liquid exchange, and then the gas-liquid contact is carried out again between the filter material layers moistened by the absorbent. Exchange absorption, so that the content of waste gas is gradually reduced, and then discharged into the atmosphere through the deliquoring and demisting device. The purified gas fully meets the relevant national emission requirements.

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