Waste Gas Treatment in Nitrile Glove Production

Nitrile gloves are disposable and quickly consumed products. They are artificial synthetic rubber gloves formed by the impregnation process using nitrile rubber (NBR) as the raw material. During the production of nitrile gloves, exhaust gases such as ammonia, sulfur dioxide, hydrogen sulfide, chlorine, hydrogen chloride, and non-methane total hydrocarbons are produced, which need to be purified and treated to meet the standards for atmospheric pollutant emissions.

Two types of exhaust gas sources

1. During the processing of the raw materials for nitrile gloves, there may be unreacted raw materials and gases generated by the volatilization of additives, or some organic waste gases may be released during the heating and melting process.

2. During the production process of nitrile gloves, the vulcanization stage may emit sulfur-containing waste gas, which poses a threat to human health and the living environment.

Method for treating exhaust gas

The major components of the waste gas produced during the production of nitrile gloves are benzene derivatives, formaldehyde, ammonia, etc. How to deal with these waste gases?

1. Establish the collection system: First, establish the waste gas collection system to effectively collect the waste gas generated during production and wait for the next step of treatment.

2. Pre-treatment: The collected waste gas is subjected to pre-treatment, which can be achieved through methods such as filtration or electrostatic dust removal.

3. Adsorption treatment: The organic pollutants in the exhaust gas are removed by using the activated carbon adsorption method. Activated carbon has a porous structure and can effectively adsorb the harmful substances in the exhaust gas.

4. Catalytic Oxidation: For pollutants that are difficult to be adsorbed by activated carbon, the catalytic oxidation method can be employed for treatment. Under the action of a catalyst, the harmful substances in the exhaust gas are oxidized and decomposed at a lower temperature.

5. Emission: After the treated exhaust gas meets the emission standards, it is discharged through the chimney at a high altitude.

6. Treatment effect: After the above treatment, the harmful substances in the exhaust gas have been effectively removed, and the emission concentration has met the relevant national emission standards, effectively reducing the hazards to the environment and the health of employees.

There are various methods for treating organic waste gas containing non-methane total hydrocarbons. The common ones include the activated carbon adsorption method, combustion method, UV photolysis purification method, etc.