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Principle, prime movers and attachments of centrifugal compressors for small air separation unit

Principle, prime movers and attachments of centrifugal compressors for small air separation unit
Feb 24, 2025
Author: DEAR AST

Centrifugal compressor is a kind of turbine compressor, with more characteristics such as handling gas volume, small size, simple structure, smooth operation, easy maintenance and gas is not oil pollution, can be used in the form of drive.

Centrifugal compressor principle of operation, the main goal of increasing gas pressure is to increase the number of gas molecules per unit volume, that is, to shorten the distance between gas molecules and molecules. In order to achieve this goal, the use of gas dynamics, that is, the use of mechanical work elements (high-speed rotary impeller), work on the gas, so that the gas in the role of centrifugal, the pressure is increased, while the kinetic energy is also greatly increased; subsequently in the expansion of the flow channel of this part of the kinetic energy and transformed into static pressure energy, and the gas pressure to further improve, which is the working principle of centrifugal compressor of small air separation unit.

Centrifugal compressors are commonly driven by electric motors, steam turbines, combustion turbines, etc.

The operation of the main engine of the centrifugal compressor is predicated on the normal operation of the auxiliary equipment, which includes: lubricating oil system, system cooling system, condensate system, electrical instrumentation system, i.e. control system, dry gas sealing system.

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