COMPRESSOR FOR CO2 CYCLE WITH AT LEAST TWO CASCADE COMPRESSION STAGES TO ENSURE SUPERCRITICAL CONDITIONS Russian patent published in 2024 - IPC F04D1/02 F04D17/02 F04D17/12 F04D25/16 F04D29/22 

FIELD: pneumatics.

SUBSTANCE: disclosed is a group of inventions consisting of a compressor, a method of compressing a CO₂ stream using a compressor based on supercritical CO₂ cycle. Compressor (1,000) is used to treat the flow of CO₂; first stage (200) of compressor has first row of blades (250) with first number of blades, and second stage (300) of compressor, downstream of first stage (200) of compressor, has second row of blades (350) with a second number of blades; number of blades of first stage (200) of compressor is less than number of blades of second stage (300) of compressor; there is annular gap (400) between first row of blades (250) and second row of blades (350); first compression stage (200) is configured to ensure that the flow of CO₂ is in a supercritical state, preferably close to the critical point of CO₂ at its outlet, and that second stage (200) of the compressor treats CO₂ in a supercritical state.

EFFECT: higher efficiency of compressor and cycle efficiency.

15 cl, 5 dwg