Paper plays an important role in work, study, and daily life activities. However, the production of paper produces a large amount of paper dust. Requires measures to treat paper dust, not allowing them to be released into the environment. So, what is the solution for paper mills? Find out more details below. Paper dust extraction system.
Paper mill dust and emissions
In the paper production process, the emission stages from the following processes: pulping, paper making, drying… emit a specific amount of paper dust and emissions as follows:
🌟 Mixing and bleaching process: H2S gas, Chlorine vapor
🌟 The process of crushing raw materials: H2S gas, alcohol, terpenes, wood dust, hydrocarbons
🌟 Drying process: dust, ash, CO2, NOx, CO, SO2, evaporated sulfur, hydrocarbons…
Paper dust generated from paper mills is usually very small in size and light in weight. Easily float in the air. In contact with paper dust and exhaust gas in a paper factory, people will immediately experience symptoms such as sneezing, eye pain, and itching …
Because of their ultra-light and microscopic properties, they can pass through the respiratory tract into the human body. Causes dangerous diseases as follows:
🌟 Respiratory diseases: bronchitis, rhinitis, sinusitis, asthma…
🌟 Skin diseases: dermatitis, irritation, inflammation of pores …
🌟 Eye disease: eye pain, visa impairment, eye injury…
For more details on the harmful effects of paper dust as well as actual studies on paper dust. See right here: how harmful is paper dust?
Effective paper dust treatment solution
The paper dust treatment system is a solution to effectively collect and treat paper dust. They are responsible for collecting exhaust gases and dust generated in the production processes, bringing dust and waste gas to the treatment area. To keep the factory space fresh, limit dust, and keep the environment clean and safe for workers’ health.
The design of the paper dust treatment system depends on the concentration, characteristics, and scale of each factory. To come up with a suitable plan, the technician will survey and offer the most appropriate solution.
In general, the paper dust extraction system usually applies the following treatment process:
Structure:
Vacuum fan
Electric motor
Dust compartment
Capturing suction
Pipeline
Air outlet port
Dust filter device (usually using Cyclone)
Exhaust gas treatment tower (with or without depending on the project)
Working principle:
Install suction cups in areas where paper dust and exhaust gases are generated. The exhaust fan will, through the suction hood, suck the exhaust gas and dirt into the interior, and pass through the pipeline and into the treatment equipment.
The air stream containing dirt is fed into the dust filter to separate the dust from the air stream. After this process, the dust is separated and collected. The gas flow continues to come out and bring to the absorption tower. Here, the harmful exhaust gas stream will be processed into less harmful emissions or converted into harmless substances.
After the treatment process, the gas stream is separated from dust and exhaust gas and taken to the environment by a chimney.
Dust and exhaust gas treatment equipment
In the paper dust collection and filtration systems, there are two types of dust and exhaust gas treatment equipment: dust filter equipment and gas treatment equipment. List of some dust and gas treatment equipment used for the paper industry as follows:
Cyclone dust filter equipment
Cyclone has a cylindrical shape, the bottom is designed with a truncated funnel. The principle of operation is to take advantage of the action of centrifugal force. The flow of dust and dirt moving inside the Cyclone creates an axial flow. When the dust particles move inside the Cyclone, they collide with the Cyclone wall, thanks to the force of inertia, the dust particles lose kinetic energy and fall to the bottom of the funnel.
The airflow continues to move down to the bottom of the hopper and back to the top. The process continues like this, we will collect the dust collected at the bottom of the hopper, and the clean air stream is taken out.
Cyclone dust filters can achieve 95-98% efficiency with dust particles greater than or equal to 5µm in diameter.
Exhaust gas absorption tower
An exhaust gas absorption tower is a type of tower that uses a solution/liquid to remove pollutant gasses. The solution stream will be sprayed from the top down, and the gas containing harmful substances will be pumped in from the bottom up. Then the two phases meet, and the exhaust gas stream comes into contact with the absorption solution. Pollutants will be trapped in solid form or converted into other less harmful substances, clean air is released.
Paper dust extraction system supplier
System Fan Global specializes in manufacturing and supplying industrial exhaust fan equipment, dust collection equipment, and exhaust gas treatment system. With headquarters in Vietnam, we export our products to countries all over the world.
Contact System Fan Global for specific advice. Let us know your requirements and your location. We quote the most specific product prices.
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The Cyclone dust collector system is specifically designed according to the scale and characteristics of each project. Contact System Fan for specific advice and quotes.
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