SYSTEM AND METHOD FOR CRYOGENIC COOLING USING LIQUEFIED NATURAL GAS

摘要

A system and method for cooling a material with liquefied fuel gas where liquefied gas and the material to be cryogenically cooled are brought into direct or indirect contact and cooled material and a combination of liquefied gas and vaporized gas are removed. Cooling may also employ an intermediate cooling medium such as a refrigerant or nitrogen. In the case of converting rubber in tires (131) to rubber crumb (145), cooling of the products of a hammer mill (135) and a fine grind mill (142) by nitrogen subsequent to the cooling of nitrogen by a refrigerant and the refrigerant by liquefied gas converts shredded tires (131) into recyclable rubber crumb (148). Liquefied gas may also be used to cool electrical conductors. The vaporized gas, in either application, is then distributed to customers.