Patent ID: 6128920
Filing Date: 2000-10-10
Classification: F25J,F28D,F28F,Y10S

Abstract:
A dephlegmator comprising:a feed gas passage; anda refrigerant passage, a feed gas introduced into said feed gas passage from the bottom being heat-exchanged with a refrigerant passing through said refrigerant passage, components having low boiling points being withdrawn as rectified gases from the top, and components having high boiling points being discharged as condensates from the bottom;wherein said refrigerant passage is divided into a first section on the top side and a second section on the bottom side by a bridgewall;in the first section, a liquid or gas-liquid two-phase refrigerant is introduced from the bottom of said refrigerant passage so as to flow parallel to the feed gas; andin the second section, a gas fraction of the refrigerant discharged from the first section flows.