Is the main component of the 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.
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.
