column activated carbon: a powerful assistant for gas purification
In modern industry and life, with the increasing severity of environmental pollution problems, it is particularly important to find effective gas purification technology. column activated carbon, with its unique structure and excellent adsorption performance, has become a shining star in the field of gas purification.
In modern industry and life, with the increasing severity of environmental pollution problems, it is particularly important to find effective gas purification technology. column activated carbon, with its unique structure and excellent adsorption performance, has become a shining star in the field of gas purification.
1. Basic characteristics of column activated carbon
column activated carbon is made of high-quality coal, coconut shells, sawdust, etc., and is refined through a series of complex processes such as crushing, carbonization, activation, and refining. It has the appearance of black cylindrical particles with a high specific surface area and rich microporous structure, which makes its surface have a large number of adsorption sites, which can efficiently adsorb harmful substances in the gas.
2 Classification of column activated carbon
column activated carbon is divided into wood column activated carbon and coal column activated carbon.
(1) Wood column activated carbon is made of high-quality sawdust, coconut shells, etc. as raw materials, and is made by crushing, mixing, extruding, molding, drying, carbonization, and activation. Because high-quality sawdust and coconut shells are used as raw materials, the column activated carbon made has lower ash content, less impurities, and has an absolute advantage in gas phase adsorption value and CTC than traditional coal column carbon. The product has a reasonable pore size distribution, achieving maximum adsorption and desorption, thereby greatly improving the service life of the product (average 2-3 years), which is 1.4 times that of ordinary coal carbon.
Applications:
① Gas phase adsorption, VOC waste gas treatment
② Organic solvent recovery (benzene gas toluene, xylene, acetone recovery in the acetate fiber industry)
③ Impurity and harmful gas removal, waste gas recovery
④ Excess gasoline recovery in refineries, gas stations, and oil depots.
⑤ Aquarium water purification and water quality purification.
(2) Coal-based column activated carbon is made of high-quality anthracite as raw material and is processed into black cylindrical particles. It has well-developed pores and pore structure, and the pore size is between coconut shell activated carbon and wood activated carbon. It has the advantages of large specific surface area, fast adsorption speed, strong adsorption ability, high adsorption capacity, high mechanical strength, easy repeated regeneration, and low cost.
Application: Coal-based column activated carbon is used for purification of toxic gases, waste gas treatment, purification of industrial and domestic water, solvent recovery, etc. It is also widely used in various aspects of industrial and agricultural production, such as alkali-free deodorization (refined desulfurization), ethylene desalination (refined filler), catalyst carrier (palladium, platinum, rhodium, etc.), water purification and sewage treatment in the petrochemical industry; water quality treatment and protection of power plants in the power industry; chemical catalysts and carriers, gas purification, solvent recovery and decolorization and refining of oils and fats in the chemical industry; refining and decolorization of beverages, alcohol, monosodium glutamate mother liquor and food in the food industry; gold extraction and tail liquid recovery in the gold industry; sewage treatment, waste gas and harmful gas treatment, gas purification in the environmental protection industry; and cigarette filters, wood floor moisture-proofing, odor absorption, automobile gasoline evaporation pollution control, and preparation of various impregnation liquids in related industries. Activated carbon will have excellent development prospects and a broad sales market in the future.
(3) Tar column activated carbon: Coal-based column tar activated carbon is made from tar, and is also made with anthracite in the middle. Tar activated carbon made with tar is mainly used to adsorb harmful substances such as tar, so it is called tar activated carbon. This product has high mechanical strength, and is the third of ordinary wood. It has developed pore structure, excellent adsorption performance, high wear resistance, good specific surface area, can withstand high temperature and high pressure, is not easy to break, easy to regenerate, and has long service life. The product has a column and angular appearance, good gloss, and is screened three times by mechanical vibration. It has obvious effects on purifying and removing odor, odor, chlorine, phenol, mercury, lead, arsenic, cyanide and other harmful substances in water.
Uses: Coal-based column tar activated carbon has the characteristics of natural porous structure and large specific surface area, so it is widely used in toxic gas purification, waste gas treatment, industrial and domestic water purification, solvent recovery, urban drinking water advanced purification, removal of residual chlorine, deodorization; it is also a high-level purification material in the production process of high-purity water and artificial mineral water; large-scale boiler feed water pre-removes harmful impurities such as COD, which can improve boiler efficiency and extend boiler life; it can effectively remove COD, pigments, odor and other toxic substances in sewage. Large-particle activated carbon can be filled with filters and purify air.
(4) SDG-1, SDG-2: also known as impregnated activated carbon; impregnated activated carbon is made from column activated carbon with high adsorption performance, impregnated with alkaline solutions such as potassium hydroxide and sodium hydroxide, and then refined by burning and drying at 130°-180°. Impregnated activated carbon is widely used to remove organic gases and steam from air or other airflows, such as hydrogen sulfide, sulfur dioxide, etc., and is used for industrial adsorption of acidic gases.
3. column activated carbon specifications
Diameter: 1.5mm 3.0mm 4.0mm 6.0mm 8.0mm
Iodine value: 500-1200
4. Advantages and challenges of column activated carbon
Advantages:
Efficient adsorption: column activated carbon has excellent adsorption properties and can efficiently remove harmful substances in the gas.
Good stability: column activated carbon treated with special processes has good chemical stability and thermal stability, and can maintain its performance for a long time under harsh environmental conditions.
Recycling: After reaching the saturated state, the column activated carbon can be regenerated to restore its adsorption performance, thus achieving recycling and reducing the cost of use.
In summary, column activated carbon has shown excellent performance and effect in purifying gas due to its excellent adsorption capacity, natural source, renewability, low resistance and efficient ventilation. It can not only effectively remove a variety of pollutants in the air, but also maintain a stable purification effect for a long time, providing a strong guarantee for creating a fresh and healthy indoor environment.
