Gas liquefaction method and apparatus

Patent · Tue Apr 26 04:00:00 EDT 1988

OSTI ID:7031069

Gates, R G

A method of liquifying a stream of permanent gas comprising nitrogen utilizing a single fluid cycle is described comprising: (a) compressing the gas stream to a pressure of from about 75 to 90 atmosphere; (b) providing a nitrogen working fluid at a pressure of from about 75 to 90 atmospheres; (c) cooling the fluid to a temperature of from about 170 to 200 K; (d) work-expanding the fluid to a temperature of from about 107 to 120 K; (e) warming the work-expanded fluid by heat exchange countercurrently to the gas stream thereby providing refrigeration necessary to reduce the temperature of the gas to below its critical temperature.

• Assignee: BOC Group, Inc., Montvale, NJ
• Patent Number(s): US 4740223
• OSTI ID: 7031069
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
COMPRESSIBLE FLOW
COMPRESSION
COOLING
CRITICAL TEMPERATURE
ELEMENTS
ENERGY TRANSFER
FLUID FLOW
HEAT TRANSFER
LIQUEFACTION
LIQUEFIED GASES
LOW TEMPERATURE
MEDIUM PRESSURE
NITROGEN
NONMETALS
PHYSICAL PROPERTIES
PRESSURIZING
PRODUCTION
REFRIGERATION
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE