The difference between general charcoal and activated carbon: 1. With different processing technology, bamboo charcoal only goes through the carbonization stage, and activated carbon needs to go through activation, pickling and drying stages in addition to the carbonization process. 2. The microstructure is very different: the pore diameter of bamboo charcoal is larger than that of activated carbon. 3. The specific surface area is different. The specific surface area refers to the size of the surface area occupied by the unit mass. 4. There is a big difference in hardness. Bamboo charcoal has high density, high hardness, and is not easy to break. It is suitable for wear-resistant home textile products; the hardness of activated carbon of different materials is very different, the hardness of coconut shell activated carbon is high, and the activated carbon produced from bamboo has light specific gravity and softness. , It is fragile, so it is not suitable for products with high abrasion resistance requirements. 5. The production cost varies greatly. Bamboo charcoal requires only one carbonization process, while activated carbon also requires an activation process. The cost is much higher than bamboo charcoal, about 35 times that of bamboo charcoal. Therefore, the product price is 3-5 times that of bamboo charcoal. 6. The raw material and its consumption are different. The raw material consumption of activated carbon is generally 3-5 times higher than that of bamboo charcoal. For example, 6t (ton) of bamboo can make 1t of bamboo charcoal, but 3-5t of bamboo charcoal can process 1t of bamboo activated carbon. Of course, the raw material cost of coconut shell activated carbon will be higher, but the better the effect. 7. Different shapes of bamboo charcoal in different shapes, including tube charcoal, flake charcoal, crushed charcoal, granular charcoal, charcoal powder, etc., with a wide range of applications. and many more 8. The pores of bamboo charcoal with different adsorption objects are mainly macropores, while activated carbon is very different. Physically activated activated carbon is dominated by micropores, and chemically activated activated carbon is dominated by macropores. Different activation processes The activated carbon produced is quite different. Bamboo charcoal mainly adsorbs some macromolecular substances, including many microorganisms. Activated carbon has different pore structures and is used in different fields according to different adsorbed species. But for substances with small molecular diameters (such as formaldehyde, benzene, ammonia and other harmful gases), the adsorption of activated carbon is several times stronger than that of bamboo charcoal. Moreover, the adsorption of activated carbon is very specific, and different pore sizes are used to adsorb different substances.
Precautions for picking carbon molecular sieves Most manufacturers have no significant difference in the carbon molecular sieve in the outer shape, so the user is difficult to distinguish by observing the outer shape of the molecular sieve is difficult to distinguish between imported molecular sieves or domestic molecular sieves. But one thing, if the manufacturer claims to use the high-quality imported molecular sieve, but the price is much lower than the market price, then be careful. It is impossible to sell the equipment without selling the fine. Equipment to buy an in-house domestic molecular sieve is not terrible, but the price of imported molecular sieves has bought domestic molecular sieves, and that loss can be big. We know that using carbon molecular sieve pressure adsorption nitrogen is separated from Van Dehua to separate oxygen and nitrogen, the larger the specific surface area of the molecular sieve, the more uniform the aperture distribution, the more micropores or submicropiles, the amount of adsorption The bigger the more; at the same time, if the aperture can be as small as possible, Van Dehua's field overlaps, there is a better separation of low concentration substances. Therefore, in the PSA nitrogen nitrogen apparatus, the performance of the molecular sieve is directly related to the gas content and energy consumption of the entire device, so that the appropriate adsorbent is the weight.
Market analysis of carbon molecular sieve For a long time, carbon molecules are sieved into Japan and Germany's monopoly products. The 80% of the domestic markets ago have been posseid in 2000. Carbon molecular sieve technology introduced domestic, domestic carbon molecular sieve manufacturers, mainly distributed in Changxing, Shandong, Xuancheng, and other places. Domestic molecular sieves seized most of the market share, but we must do a strong stronger in this industry, we must innovate, improve product performance indicators, break technology trade barriers. In the next few years, the carbon molecular sieve product will develop in high indicators, high strength, high reactor density, and low-end grade products will be eliminated. The space division equipment will tend to miniaturize, and the molecular sieve industry has put forward higher requirements. Therefore, if you seize the current good time, expand production, gradually change international and domestic awareness of China's production carbon molecules, and quickly seize the domestic international market, it may become an industry drain soldier within two to three years. Domestic market In 2012, the domestic market mainly adopts medium and low-grade carbon molecular sieves. The annual demand is more than 6,000 tons. With the continuous development of my country's economy, industrial, especially chemical industries continuously expand, the demand level for carbon molecules will grow year by year, especially In recent years, the state attaches great importance to the safety of coal mines, oil fields and tankers, forced oil fields, tankers, and the demand for nitrogen generators, electronics industry and material industries, further expand the demand for domestic carbon molecular sieves. According to the survey, since 2000, the average annual growth rate has been more than 80%, and the prospects of the domestic market have vast. international market With the continuous maturity of transformer adsorption technology, the application of nitrogen generator is getting wider and wide, and the demand for carbon molecular sieves is also growing, and the demand for developed countries such as Europe and the United States has grown steadily, and in recent years The demand in the country is more flying, and each year has gradually increased, and it is estimated that the total demand for international carbon molecules in 2013 is more than 10,000 tons. Industry development According to the analysis of international domestic experts, the carbon molecular sieve industry presents the following trends: First, as the use of the transformer adsorption nitrogen generator continues to expand, the demand for carbon molecular sieve is increasing, which will further promote the development of the industry, in the next few years, This industry will become well known from a uncommon industry. Secondly, as the application depth improves, the nitrogen sieve amount, nitrogen recovery rate, heap density, and compressive strength and other indicators are increasing, further improve product performance indicators will be the future development of this industry. trend. Third, since the carbon molecular sieve is mainly constituted by transformer adsorption nitrogen generator, the cost accounts for more than 70% of the entire equipment, so reduced costs will be an important condition that promotes the development of the industry. In the next week, companies will continue to explore new materials, and strive to achieve the highest level in the lowest cost. Changxing Shanli Chemical is a Carbon Molecular Sieve Manufacturer and a Carbon Molecular Sieve Suppliers in China. Provide Carbon Molecular Sieve.
Is the main component of the carbon molecular sieve? The main ingredient of the carbon molecular sieve is an elemental carbon, an appearance is a black columnar solid. Due to a small pore having a large number of diameters of 4 angstroms, the micropore is strong in an instantaneous affinity of oxygen molecules, and oxygen and nitrogen can be separated from oxygen and nitrogen in the air, and nitrogen is prepared using a transformer adsorption device (PSA). The amount of nitrogen in carbon molecules is high, and the nitrogen recovery is high, long service life is suitable for various types of transformer adsorbing nitrogen generator, which is the preferred product of transformer adsorption nitrogen generator. Carbon molecular sieved nitrogen has been widely used in petrochemical, metal heat treatment, electronic manufacturing, food preservation and other industries. working principle The carbon molecular sieve is the purpose of separating oxygen and nitrogen using the characteristics of sieve. When the molecular sieve absorbing impurity gas, the midperets only functions as a channel, and the adsorbed molecules are transported into the micropores and submicropores, and the micropores and sub-micropores are the volume of the truly adsorption. As shown in the above, there is a large amount of micropores inside the carbon molecular sieve which allows molecules that are small by small kinetic dimensions to diffuse into the well while limiting the entry of large diameter molecules. Due to differences in the relative diffusion rate of different sizes, the components of the gas mixture can be effectively separated. Therefore, when the carbon molecular sieve is fabricated, the intra-borne distribution of the carbon molecular sieve should be 0.28 to 0.38 nm depending on the size of the molecular size. Within the microporous size range, oxygen can quickly diffuse into the well through the microporous orifice, and nitrogen is difficult to pass the microporous mouth, thereby achieving oxygen and nitrogen separation. The microporous pore size is the basal basis for carbon molecular sieve separation oxygen, nitrogen. If the aperture is too large, oxygen, nitrogen molecular sieves are easy to enter the micropore, and the separation is not separated; and the aperture is too small, oxygen, nitrogen can not enter In the microporous, the separation is not generated. Domestic molecular sieves are not very good to control the size of the aperture due to conditional restrictions. The carbon molecular sieve microporous pore size sold on the market was distributed at 0.3 to 1 nm, and only the rocky molecular sieve was 0.28 ~ 0.36 nm. The raw material of the carbon molecular sieve is a coconut shell, coal, resin, etc., first step, then powder, then combined with the base, the base is mainly increased, preventing the broken powder; the second step is to activate The aperture is introduced at 600 to 1000 ° C to the activator, and the commonly used activator has water vapor, carbon dioxide, oxygen, and mixture of their mixture. They are thermochemically reacted with a more active amorphous carbon atom to expand the growth of the surface area from 10 to 60 min, and the third step is a hole structure adjustment, and the vapor of chemical: such as benzene is carbon The molecular sieve microphil wall is deposited to adjust the size of the hole to satisfy the requirements.
What is carbon molecular sieve? The carbon molecular sieve is a new type of adsorbent developed in the 1970s. It is an excellent non-polar carbon material, carbon molecular Sieves, CMS) for separating air is rich in nitrogen, using normal temperature The low-pressure nitrogen process has the advantages of less investment costs than the traditional deep-cold high-pressure nitrogen process, fast nitrogen, and low nitrogen cost. Therefore, it is the first choice of transformer adsorption (PSA) in the engineering community, this nitrogen in the chemical industry, oil and gas industry, electronics industry, food industry, coal industry, pharmaceutical industry, cable industry, metal heat treatment , Transportation and storage are widely used.
After the house is renovated, many people will think of using activated carbons to purify the indoor air, but there are many activated carbons products on the market, and people who don’t know activated carbon don’t know how to choose. The following editor will introduce the role of activated carbons. 1. Activated carbons indoor deodorization: Put a few bags of activated carbons in the toilet, kitchen, refrigerator, shoe cabinet, and shoes, and the peculiar smell will disappear without a trace. 2. Indoor detoxification of activated carbons: It can adjust indoor air, absorb toxic and harmful chemical gases emitted by decorative materials such as ammonia, formaldehyde, volatile organic compounds, benzene, toluene, etc., and adjust indoor space humidity. 3. Activated carbons indoor environmental protection: Activated carbons can be placed in offices, offices, reception rooms, hotels, air-conditioned rooms, entertainment venues, new furniture, cars, etc., to deodorize, disinfect, and purify the air. 4. Fool-proof and mildew-proof activated carbons: Preserving ancient books and calligraphy can make precious ancient books and calligraphy always true and safe. The adsorption catalytic function can easily prevent the growth of mold, which not only solves the mold problem, but also eliminates the unpleasant musty smell. 5. Activated carbons indoor sterilization: It can effectively remove the large intestine, Staphylococcus aureus, white ringworm, mold, pyogenic bacteria, Pseudomonas aeruginosa and other bacteria, and inhibit the spread of enterovirus, influenza, filter diseases, and viruses.