|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||62/532 ; 62/123 ; 165/141 ; 165/142|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 10 인용 특허 : 6|
A feed liquid, which can be aqueous, is frozen in tubes of a freeze exchanger by indirect cooling with a cold liquefied refrigerant to form a solid tubular shaped product. A warm liquefied refrigerant is used to indirectly melt a thin layer of the frozen tubular product to release it from the tubes. The freed tubular product is cut into pieces which can be used for cooling purposes and, in the case of ice, to give potable water.
A method of freezing a liquid which comprises: producing a falling film of a cold liquefied refrigerant, at a temperature below the freezing point of a feed liquid, on the exterior surface of a vertical tube extending through a chamber as the feed liquid flows downwardly in the tube to cool the feed liquid by heat exchange with the cold liquid refrigerant to a temperature low enough to form a solid tubular shaped product of frozen feed liquid adhering to the tube; collecting refrigerant vapor and liquid in the chamber, sending it to a refrigeration means...