What are the production processes of coal activated carbon

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What are the production processes of coal activated carbon

Honeycomb activated carbon is a new type of environmentally friendly activated carbon waste gas purification product, which can effectively reduce odor and pollutants and reach the national first-level exhaust gas emission standard.

 

(1) Pulverized coal device: lignite or bituminous coal are respectively crushed to ≤2mm, and then mixed according to the mass ratio of lignite or bituminous coal: coking coal = 1:0.2-0.5, and then ground to 74μm to obtain uniformly mixed pulverized coal:

 

(2) Emulsified coal tar: In the first step, the high-temperature coal tar with a pitch content of ≥55% is preheated to 120-150°C. The second step is the preparation of the emulsifier aqueous solution, adding 2-6% of the high-temperature coal tar to the water. chinactivecarbon Surface active agent and stabilizer of 0.5-2% of the mass of high-temperature coal tar, and preheated to 80-90℃ to form an emulsifier aqueous solution; the third step is high-temperature coal tar according to mass ratio; emulsifier aqueous solution=1:0.3 -0.7, under stirring conditions, make emulsified coal tar from the high-temperature coal tar and emulsifier aqueous solution;

 

(3) Processing of plastic slime, according to the mass ratio: coal powder: emulsified coal tar: water: water-soluble binder: lubricant = 34-57:30-36:3-5:2-3, add it Stir evenly in the kneader to make plastic slime;

 

(4) Slime: The plastic slime is processed by a vacuum muller or extruder to make the slime evenly mixed, coconut shell activated carbon supplier and then filtered with a 60 to 100 mesh screen in the molding machine to remove large particles:

 

(5) Extrusion molding, the slime after sludge treatment is added to an extrusion molding machine equipped with a honeycomb steel mold for molding to obtain a wet honeycomb body;

 

(6) Drying: the wet honeycomb is dried until the moisture content is less than 2%;

 

  • Carbonization and cremation, using inert gas as protective gas, heating to 600-800°C at a heating rate of 3-5°C/min, and carbonizing at this temperature for 2-3 hours, and then at a heating rate of 5-15°C/ Min heating up to 750-850 ℃, water vapor activation for 3-15 hours, after multiple processes, finally made into coal honeycomb activated carbon.

 

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