What is the role of the air seal in the screw CO2 compressors used in soda ash production?
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This post was last edited by lxq700918 on 2009-10-4 21:52. Soda ash production: What is the purpose of using an air seal in screw CO2 compressors? Will it affect the purity of CO2?
I checked it, and I only figured out that sealing takes place in the gaps between the rotors as well as between the rotors and the walls, while CO2 is present between the two rotors; I don’t think there’s much confusion here. Additionally, CO2 used for carbonization can be mixed with air without affecting product quality.
By the way, look at the following passage: The groove of the screw rotor becomes filled with gas as it passes through the air intake. As the rotor rotates, its grooves are enclosed by the casing walls, forming compression chambers. Once these grooves are sealed, lubricating oil is injected into the compression chambers to provide sealing. Cooling and lubrication functions. As the rotor rotates to compress the lubricant + gas (referred to as the oil-gas mixture), the volume of the compression chamber decreases, compressing the oil-gas mixture toward the exhaust port. As the compression chamber passes through the exhaust port, the oil-gas mixture is discharged from the compressor, completing one cycle of suction – compression – exhaust. Once the rotor groove is sealed, the seal is in place.