Honeycomb activated carbon (block) is a kind of spectral adsorption material, which has a wide range of adsorption and purification effects. It can effectively adsorb sulfur dioxide, nitrogen monoxide, carbon disulfide, carbon tetrachloride, hydrogen sulfide, and benzenes, aldehydes, phenols, esters, ketones and other substances. Such as gasoline, diesel, phosgene and substances containing heavy metals and odors. The honeycomb activated carbon block produced by our company has many advantages compared with other adsorption products such as granular activated carbon and silica gel, zeolite and active adsorption products: 1. Honeycomb activated carbon has a relatively developed void structure and a large specific surface area. Honeycomb activated carbon has a relatively developed void structure. In addition to active molecular sieves, it has a wide pore range and pores with different pore sizes. It can adsorb various substances with different molecular sizes and has a large number of micropores, so the specific surface area is large. The adsorption force is also large. 2. Surface properties of activated carbon The surface properties of activated carbon vary depending on the activation conditions, and the activated carbon of high-temperature steam contains an alkaline oxide on the surface. The activated carbon activated by zinc chloride contains an acidic oxide on the surface, and the latter has a particularly large adsorption capacity for the basic oxide. Therefore, the honeycomb activated carbon block has surface activation properties, pore size distribution and pore shape, which are the main reasons for the selective adsorption of honeycomb activated carbon. 3. Honeycomb activated carbon has strong catalytic properties Honeycomb activated carbon is often used as a catalyst carrier in the chemical industry, and a catalytic substance is deposited on the surface of a honeycomb activated carbon block (this technology cooperates with Shanghai Jiaotong University to achieve gratifying results) and then used together as a catalyst. The role of honeycomb activated carbon is not limited to load activators, which have a major impact on the activity, selectivity and service life of the catalyst. At the same time, it also has a catalytic effect. Therefore, honeycomb activated carbon exhibits catalytic activity in many adsorption processes with catalytic activity. For example, honeycomb activated carbon adsorbs sulfur dioxide by catalytic oxidation to sulfur trioxide. In summary, the activated carbon block (16 pores ∕cm2) produced by using activated carbon powder has a porous structure, a large internal surface area and good heat resistance, acid resistance and alkali resistance, and can be used as a catalyst carrier. best choice. Product advantages: The honeycomb activated carbon block is processed by using high-quality activated carbon powder as the main raw material. Therefore, its special physical properties further optimize the high surface area, high surface activity and high adsorption capacity of the activated carbon itself, making the drag coefficient smaller and adsorbing. The amount is larger, the equipment consumes less energy, and the running cost is lower. It is easier to adsorb and desorb. The performance price ratio is far superior to activated carbon granules or activated carbon fibers, and is more suitable for large displacement, medium and low concentration exhaust gas purification equipment. Application areas: 1. Load central air conditioning and air filtration Nowadays, large, medium and small shopping malls, supermarkets, hotels, underground passages, subway stations, etc., people flow too much, harmful gases volatilized by objects will directly harm the human body and mind through the air, so when people are in a polluted environment As long as the pollution in the air does not exceed the limit, it will not immediately cause death, but its toxicity is chronic. After long-term living in a polluted environment, human immunity is affected. The accumulation of toxic substances in the human body eventually leads to illness in the human body. In reality, some people are sick. It is often unthinkable because of air pollution. Therefore, the addition of honeycomb activated carbon in the central air conditioner can effectively purify the equivalent of benzene, formaldehyde and methanol in the air, such as carbon monoxide, ammonia, chlorine, sulfur dioxide, etc., and can effectively remove pollution and mediate indoors. Warm effect, block electromagnetic radiation, and maintain human health. The adsorption performance of the shell activated carbon is determined by the special structure. Activated carbon is an excellent adsorbent with the earliest application and wide application. It has abundant pores and a large specific surface area of ​​600~1600 square meters per gram, so it has excellent adsorption capacity and its average pore diameter is 15 The heat capacity of ~25 μm (micrometer) is 0.836~1.254KJ (kg.k). The structure of the activated carbon material is quite special. From the perspective of crystallography, it is a non-structural crystalline substance composed of fine graphite crystallites and hydrocarbons that connect these graphite crystallites together, and activated carbon is formed between the solid portions. The pores of the material impart special adsorption properties to the activated carbon material. Activated carbon is obtained by drying various carbonaceous materials and activating the treated surface. The carbonization temperature is generally lower than 837K, and the activation temperature is 1123 to 1173K. Typically the activator is water vapor or air. 2. Honeycomb activated carbon can also be widely used in all aspects of agricultural production: such as alkali-free deodorization (exquisite desulfurization) in the petrochemical industry, demineralized ethylene (fine filler), catalyst thawing (palladium, platinum, rhodium, etc.), water resistant honeycomb Activated carbon can be used as water purification and sewage treatment; power plant water treatment and protection in the power industry; chemical catalysts and disintegration in the chemical industry, gas purification, solvent recovery and decolorization and refining of oils and fats; beverage, alcohol and MSG in the food industry And the refining of food, decolorization; gold extraction in the gold industry. 3. Purification of air and gas: including organic solvent recovery; adsorption of gasoline vapor discharged from automobile; adsorption of toxic and harmful substances such as odor from inlet and exhaust; flue gas desulfurization of power plant, coking plant coal-fired boiler; removal of radioactivity Gas vapor; anti-virus protection; decomposition and purification of compressed air and carbonic acid gas, but also for gas separation; separation of hydrogen and methane; separation of sulfur dioxide from separated air of oxygen and nitrogen. 4. Decolorization of liquids and solutions: decolorization of sugar syrup; decolorization of petroleum; decolorization of edible oils and animal fats; purification and decolorization of chemicals; decolorization and purification of glucose, beer, juices and beverages; chemical cleaning; Purification of the solution. 5. Can be used as a catalyst and catalytic carrier: oxidation of sulfur dioxide; oxidation of ferrous iron; removal of ruthenium; oxidation of hydrogen sulfide; synthesis of phosgene; synthesis of sulfuryl peroxide; dechlorination; decomposition of lipids; isomerization and Cyclization; decomposition of ozone, etc. 6. Medically available for blood filtration and dialysis. 7. Flue gas desulfurization: Based on the National Flue Gas Desulfurization Center of Sichuan University, it develops flue gas desulfurization products.
Although there are many types of tapping screws, they all have the following similarities: Round head Tapping screw,hex tapping screw,flat head tapping screw,pan head tapping screw,truss head tapping screw Shenzhen Lanejoy Technology Co.,LTD , https://www.szcoolingrack.com
(1) are generally made of carbonized carbon steel (accounting for 99% of total production). It can also be made of stainless steel or non-ferrous metals.
(2) The product must be heat treated. Carbon steel tapping screws must be carbonized and stainless steel tapping screws must be solution hardened. In order to make tapping screws to meet the requirements of the standard of mechanical properties and performance.
(3) The product surface hardness is high, the core toughness is good. That is, "soft inside strong outside". This is a major feature of tapping Screw performance requirements. If the surface hardness is low, it can not be screwed into the matrix; If the core toughness is poor, a twist will break, can not be used. So "inside soft outside steel" is self-tapping screw to meet the use of performance, very important requirements.
(4) The surface of the product needs surface protection treatment, generally electroplating treatment. Some product surface must be treated by phosphate (photostatting), such as wall panel self - tapping screws for photostatting.
(5) Production by cold heading process. It is recommended to use high-speed cold heading machine and high-speed wire rolling machine or high-speed planetary wire rolling machine. High speed is emphasized here to ensure product quality. Only the head of tapping screw produced by high-speed machine is well formed and the thread quality is high.
The use value of honeycomb activated carbon