CARBON DIOXIDE LIQUEFACTION PROCESS AND DEVICE FOR CARBON DIOXIDE RECOVERY Russian patent published in 2010 - IPC F25J1/02 

FIELD: chemistry.

SUBSTANCE: device for carbon dioxide recovery comprises an insulated vessel 1 enabling to accumulate liquefied carbon dioxide, a hollow rotator 10 that can rotate in the vessel 1 and is provided with a set of jet holes 11 at its external periphery, a drive area 20 designed to rotate the rotator 10, a drive area which gears the rotator, an air supply area which is connected with the rotator to supply the sucked air to the rotator in air cooling, a discharge area 40 which withdraws waste gases from the rotator 10; a liquid nitrogen supply element 50 that ensures supply of liquid nitrogen, a liquid nitrogen supply area 60 that supplies liquid nitrogen, and a pump 80 used to sample liquefied carbonic acid which has been liquefied in the vessel 1. In the rotator 10, carbon dioxide is separated from the sucked air, compressed and collected under the centrifugal force. Besides carbon dioxide compressed and collected on the external peripheral side of the rotator is supplied from the set of jet holes 11 into the vessel 1 together with liquid nitrogen. And in the vessel 1, heat exchange between carbon dioxide and liquid nitrogen is enabled to liquefy carbon dioxide.

EFFECT: application of the invention allow for effective liquefaction and recovery of small amount of carbon dioxide from gases.

14 cl, 7 dwg