Patent ID: 6079222
Filing Date: 2000-06-27
Classification: F01K,F17C,Y10S

Abstract:
A method for preparing deep-frozen liquid gas for a downstream technical process which is carried out in several part-steps and in which the deep-frozen liquid gas is regasified in a heat exchange with at least one heat-exchange medium before it is used in the downstream process, wherein a refrigerating capacity of the deep-frozen liquid gas is fed as a heat sink to at least one of the part-steps of the downstream process via at least one heat-exchange medium, regasifying the deep-frozen liquid gas with an additional heat-exchange medium when said heat exchange medium is not available, cooling a first heat-exchange medium in the direct heat exchange with the deep-frozen liquid gas wherein a working medium of the downstream process is used as the first heat-exchange medium, and in addition to a first one, a second heat exchange of the deep-frozen liquid gas takes place with a second heat-exchange medium, and subsequently each heat-exchange medium is fed to a separate part-step of the downstream process, wherein water is used as the second heat-exchange medium, the temperature of said water is lowered to virtually 0.degree. C. in the heat exchange with the deep-frozen liquid gas, and in the process the water being converted to ice water and, at the same time, a turbulent flow being generated in the ice water.