Performance parameters and characteristics of coconut shell-loaded silver activated carbon
The coconut shell-loaded silver activated carbon is made of high-strength coconut shell and is refined by special silver-loading process. It is widely used in purifying equipment such as water purifiers, mineral pots and water dispensers. Its purifying water has higher effect than ordinary net water charcoal. . The activated carbon after silver loading can also play the role of sterilizing and inhibiting bacteria according to the fretting effect of silver ions, removing odor, odor and trace toxic and harmful substances in water, and the purified water can be directly consumed.
Coconut shell activated carbon is a water-treated filter material which is made of high-quality coconut shell and processed by a series of production techniques. The appearance is black and granular. It has the advantages of good wear resistance, developed gap, high adsorption performance, high strength, easy regeneration, economical and durable, etc. It has excellent effect on pure water and high purity water.
This product is made from selected coconut shells and refined by high-quality technology. Its appearance is amorphous particles, with high mechanical strength, developed pore structure, large specific surface area, fast adsorption speed, various solutes and free gases. It has good adsorption capacity and is suitable for deodorization, dechlorination and liquid decolorization of high-purity drinking water, beverages, alcohol, food and medicine. It can be widely used in solvent recovery and gas separation in the chemical industry.
The coconut shell contains silver charcoal pure water for purification, sterilization, removal of organic matter, harmful substances and heavy metals, water filters, filter packing. Carrier for fluidized bed, floating bed biological treatment systems. It is used to remove phenol, cyanide, mercury and hexavalent chromium ions from various organic and inorganic pollutants in water, and absorb odor, chlorine and color in water.
Activated carbon is a porous carbonaceous material. It has a highly developed pore structure and is an excellent adsorbent. The adsorption area per gram of activated carbon is equivalent to eight tennis balls. The adsorption is achieved by physical adsorption and chemical adsorption. The constituents of the material contain a small amount of hydrogen, nitrogen, oxygen and ash in addition to the carbon element, and the structure is carbon to form a hexacyclic accumulation. to make. Due to the irregular arrangement of the six-ring carbon, the characteristics of the microporous volume and high surface area of ​​the activated carbon are caused.
Activated carbon can be made from a variety of carbonaceous materials including wood, sawdust, coal, coke, peat, lignin, pits, hard husks, sucrose pulp, bone, lignite, petroleum residues, and the like. Among them, coal and coconut shell have become the most commonly used raw materials for the manufacture of activated carbon. The manufacture of activated carbon is basically divided into two processes. The first process includes dehydration and carbonization, heating the raw materials, drying at a temperature of 170 to 600 ° C, and carbonizing the original organic matter by about 80%. The second process is to activate the char, which is carried out by reacting an activator such as steam with carbon. In the endothermic reaction, a mixed gas consisting of CO and H2 is mainly produced for burning the heated char to a suitable temperature (800). Up to 1000 ° C), in order to burn off all the decomposable substances, thereby producing a developed microporous structure and a large specific surface area, and thus has a strong adsorption capacity.
The pores of activated carbon can be classified into three types according to the size of the pore size. Large hole: radius 1000-1000000A. Transition hole: radius 20-1000A. Micropores: Radius - 20A.
Activated carbon made from different raw materials has pore sizes of different sizes. Activated carbon made from coconut shell has a minimum pore radius. Wood activated carbons generally have the largest pore radii, they are used to adsorb larger molecules and are used almost exclusively in the liquid phase. The first type of granular activated carbon used in the field of urban water treatment is made of wood, called charcoal. The pore size of coal-based activated carbon is somewhere in between.
In coal-based activated carbon, lignite activated carbon has more transition pores and larger average pore diameter than anthracite activated carbon, so it can effectively remove macromolecular organic matter in water.
Activated carbon, which is generally used in water treatment, has a surface area that is not necessarily too large, but should have more transition pores and a larger average pore diameter. Some activated carbons for liquid phase sales in Japan have the following characteristics: a specific surface area of ​​850 to 1000 m 2 /g, a pore volume of 0.88 to 1.5 ml/g, and an average pore radius of 40 to 50 A.
Introduction of physical properties of coconut shell activated carbon:
Coconut shell activated carbon is a multi-pore carbonized material with a very rich pore structure and good adsorption characteristics. Its adsorption is made by physical and chemical absorption, and its appearance is black. In addition to the main carbon, its composition contains a small amount of hydrogen, nitrogen, oxygen, and its structure looks like a hexagon. Due to the irregular hexagonal structure, it is determined by its large body and high surface area. The characteristics of each gram of activated carbon have a specific surface equivalent to 1000 square meters.
Coconut shell activated carbon technical parameters:
Application of coconut shell activated carbon in waste gas treatment:
1. Granular activated carbon is often used in gas phase adsorption, usually by allowing gas to pass through the activated carbon layer for adsorption. According to the state of the activated carbon layer in the adsorption device, the adsorption layer has several fixed layers, a moving layer and a flowing layer. However, in small adsorbers such as electric frosts and deodorizers in automobiles, adsorption by gas convection and diffusion is performed. In addition to granular activated carbon, activated carbon fibers and activated carbon moldings are also increasingly being used in gas phase adsorption.
2. The air in the instrument room, air-conditioned room, basement and submarine facilities often contains body odor, smoking odor, cooking odor, oil, organic and inorganic sulphide, corrosive ingredients due to external pollution or the influence of crowd activities in a closed environment. Etc., causing corrosion of precision instruments or affecting human health. It can be purified by activated carbon to remove impurity components.
3. Chemicals, tanneries, paint factories and engineering gases using various organic solvents contain various organic solvents, inorganic and organic sulfides, hydrocarbons, chlorine, oil, mercury and other environmentally harmful The ingredients can be discharged after adsorption with activated carbon. The gases emitted from the atomic energy facilities contain radioactive cesium, strontium, iodine, etc., which must be adsorbed with activated carbon before being discharged. The flue gas generated by the combustion of coal and heavy oil contains sulfur dioxide and nitrogen oxides, which are harmful components that pollute the atmosphere and form acid rain. They can also be adsorbed and removed by activated carbon.
4, coconut shell activated carbon for the use of refined gas, such as gas masks, cigarette filters, refrigerator deodorizers, car exhaust gas treatment devices, etc., are using the excellent adsorption properties of activated carbon, the toxic components of the gas, the human body is not good The ingredients or odorous ingredients are removed. For example, by adding 100 to 120 ng of activated carbon to a cigarette filter, a large portion of the harmful components of the smoke can be removed.
Coconut shell activated carbon notes:
1. The coconut shell activated carbon is prevented from being mixed with hard materials during transportation. It is not allowed to step on or step on to prevent the carbon particles from breaking and affecting the quality.
2. Storage should be stored in porous adsorbent, so water immersion should be absolutely prevented during transportation, storage and use. After water immersion, a large amount of water is filled with active voids, making it useless.
3, to prevent tar substances in the use process, should prohibit the tar substances into the activated carbon bed, so as not to block the activated carbon gap, so that it loses its adsorption. It is best to have a decoking device to purify the gas.
4. When the fire-activated activated carbon is stored or transported, it should be prevented from direct contact with the fire source to prevent oxygen from entering the fire and regeneration when the activated carbon is regenerated. The steam must be cooled to below 80 °C after regeneration. Otherwise, the temperature is high and oxygen is encountered. Activated carbon spontaneous combustion.
Introduction to activated carbon function:
Activated carbon has high-efficiency air purification function, activated carbon can create a comfortable and clean environment, activated carbon is more protective to human health, activated carbon is an invisible air filter, activated carbon is a combination of physical adsorption and chemical decomposition, and decomposes formaldehyde in the air. , ammonia, benzene, cigarettes, oil smoke and other harmful gases and various odors, especially carcinogenic aromatic substances, activated carbon has a strong adsorption capacity, is a commonly used adsorbent, catalyst or catalyst carrier, easy to air The harmful gases in the medium are in full contact, and the activated carbon uses its own pore adsorption to suck harmful gas molecules into the pores, blowing out clean and clean air. Therefore, family partners cannot do without activated carbon.
Application of activated carbon:
Activated carbon is widely used in various aspects of industrial and agricultural production, such as alkali-free deodorization (refined desulfurization), ethylene demineralized water (refined filler), catalyst carrier (palladium, platinum, rhodium, etc.), water purification and sewage treatment in the petrochemical industry; Water treatment and protection of power plants in the industry; chemical catalysts and carriers in the chemical industry, gas purification, solvent recovery and decolorization and refining of oils and fats; refining and decolorization of beverages, alcohols, MSG and foods in the food industry; gold in the gold industry Extraction, tail liquid recovery; environmental treatment industry sewage treatment, waste gas and harmful gas treatment, gas purification; and related industries, cigarette filters, wood floor moisture, odor absorption, automotive gasoline evaporation pollution control, preparation of various impregnating liquids Wait. Activated carbon will have excellent development prospects and a broad sales market in the future.
Packing and storage: 50kg bag, plastic woven bag, the product should be stored in a dry place indoors, and not damp.
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