The main raw material of activated carbon can be almost all carbon-rich organic materials such as coal, wood, shell, coconut shell, walnut shell, apricot shell, jujube and so on. The carbon-rich organic material is converted into activated carbon by pyrolysis in an activation furnace at high temperature and under a pressure. Activated carbon contains a large number of micropores, has a huge surface area, can effectively remove the color, odor, can be removed in the secondary effluent of most organic pollutants and certain inorganic substances, including some toxic heavy metals.
Activated carbon according to the shape of different divided into columnar activated carbon, powdered activated carbon, granular activated carbon, spherical activated carbon.
I.Columnar activated carbon
Columnar activated carbon is based on coal, wood and shells and other raw materials, through the carbonization → cooling → activation → washing and a series of processes developed. With a reasonable pore structure, good adsorption properties, high mechanical strength, easy to repeated regeneration, low cost characteristics.
Columnar activated carbon widely used in solvent recovery, industrial waste gas purification, protective equipment, home improvement air purification, power plant water purification, drinking water purification, water reuse, etc .; widely used in pure water treatment, power plant water treatment, electronics factory water treatment, Water treatment of chemical industry, water treatment of food factory and pharmaceutical factory, waste water treatment of sewage plant, waste gas treatment of factory and landfill, reuse of water, breeding of sea water and so on. It is widely used in pure water production, sewage treatment, Biological carrier, marine aquaculture, and cold storage, factory air purification and other fields.
Physical and chemical indicators:
Iodine value mg / g: ≥ 1000
Dry alkali content%: ≤10
Filling density g / cm3; 0.45-0.5
Strength%: ≤95
Specific surface area m2 / g: ≥ 1100
Moisture%: ≤3.2
Total pore volume cm3 / g:? 0.9
Ash%: ≤3.5
CTC%: ≥60
Ignition point ℃: ≥ 400
Phenol adsorption rate mg / g: ≥ 50
PH value: 6-8
Methylene blue mg / g: ≥12
II.Granular activated carbon
Granular activated carbon with coconut shell, shell, coal and other raw materials, by carbonization, steam catalytic, activated and made with developed voids, adsorption performance, high strength, economic and durable.
Granular activated carbon products for drinking water, purified water, water, wine, beverages, industrial water purification, bleaching, dechlorination, deodorant, desiccant, catalytic carriers and so on. Purification, decolorization, etc .; for gas treatment, sewage treatment, desulfurization and denitrification, solvent recovery, nitrogen machine / air separation plant, water purification equipment, water treatment equipment, water treatment equipment, Equipment, such as spraying workshop.
Physical and chemical indicators:
Moisture%: ≤5
Strength%: ≥90
Iodine value mg / g: ≥900-950
III.Powdered activated carbon
The powdered activated carbon is made of coconut shell, shell, sawdust, walnut shell, apricot shell, peach shell, anthracite and charcoal as raw materials, after steam activation, refined treatment and crushing. With a large surface area adsorption is strong, high purity, fast filtration, quality and stability, with flocculation effect and the filter effect and so on. For pharmaceuticals, food additives, monosodium glutamate, chemicals, beverages and other products decolorization, impurity, refined, suitable for water purification treatment.
Physical and chemical indicators:
Methylene blue: ≥ 11m1 / 0.1g
Caramel decolorization rate: 100%
Moisture: ≤10
PH value: 5-7
Ash content: ≤ 3%
Acid soluble content: ≤ 0.8%
Iron content: ≤ 0.02%
Chloride content: ≤ 0.1%
IV.Spherical activated carbon
The appearance of the spherical activated carbon is spherical or ellipsoidal. It is made of high quality lignite or anthracite coal, binder, catalyst, etc. by crushing, mixing, balling, drying, carbonizing and activating. Having a large specific surface area and a void structure. High mechanical strength, good desulfurization performance. High sulfur capacity, the application of small resistance, uniform distribution of air flow and so on. This product is widely used in the purification of semi-water gas, raw gas natural gas, oil gas, gas, and carbon dioxide gas and some of the organic sulfur sulfide.
Spherical activated carbon, spherical core shell can be different from the inorganic material, spherical activated carbon surface area can be as high as 500-1000m2 / g, is conducive to the performance of spherical activated carbon material into full play. In addition, due to the formation of spherical activated carbon fluid flow between the fluid and good performance, the fluid through the activated carbon layer pressure decreases, it is particularly suitable for bed height of a large fixed bed of activated carbon stacking gas processing device.
Physical and chemical indicators:
Iodine value: ≥ 700mg / g
Moisture: ≤3%
Bulk density: 0.55-0.65 g / cm3
Ash content: ≤5%
Strength: 95%
PH: 7-9