METHOD FOR REMOVING CO2 FROM A CONTAMINATED HYDROCARBON FEED STREAM Russian patent published in 2020 - IPC F25J3/06 

FIELD: technological processes; chemical or physical processes.

SUBSTANCE: method includes obtaining a multiphase contaminated feed stream (100) containing hydrocarbons, which contains at least a vapor phase, a liquid phase and a solid phase, creating suspension flow of raw material (120) from multiphase flow of raw material. Suspension feed stream is fed into crystallization chamber containing seed particles CO₂. Liquid hydrocarbon feed stream (170) is obtained from crystallization chamber (91) to obtain concentrated suspension (140). Concentrated suspension (140) is removed from crystallization chamber (91) by means of extruder (142), thus obtaining solid CO₂. Backward stream (141) containing CO₂ seed particles having an average size greater than 100 micron is obtained from solid CO₂. Return flow (141) is supplied to crystallization chamber (91).

EFFECT: present invention provides a method of separating CO₂ from a contaminated feed stream containing hydrocarbons.

20 cl, 3 dwg