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1. WO1979001167 - CRYOGENIC APPARATUS AND METHOD OF REMOVING FREEZING IMPURITIES FROM A CRYOGENIC FLUID

Publication Number WO/1979/001167
Publication Date 27.12.1979
International Application No. PCT/US1979/000337
International Filing Date 21.05.1979
IPC
F25J 1/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
JLIQUEFACTION, SOLIDIFICATION, OR SEPARATION OF GASES OR GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT
1Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
02requiring the use of refrigeration, e.g. of helium or hydrogen
F25J 3/08 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
JLIQUEFACTION, SOLIDIFICATION, OR SEPARATION OF GASES OR GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT
3Processes or apparatus for separating the constituents of gaseous mixtures involving the use of liquefaction or solidification
08Separating gaseous impurities from gases or gaseous mixtures
CPC
F25J 1/0007
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS ; OR LIQUEFIED GASEOUS; MIXTURES BY PRESSURE AND COLD TREATMENT ; OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
1Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
0002characterised by the fluid to be liquefied
0005Light or noble gases
0007Helium
F25J 1/0037
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS ; OR LIQUEFIED GASEOUS; MIXTURES BY PRESSURE AND COLD TREATMENT ; OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
1Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
003characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
0032using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
0035by gas expansion with extraction of work
0037of a return stream
F25J 1/0045
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS ; OR LIQUEFIED GASEOUS; MIXTURES BY PRESSURE AND COLD TREATMENT ; OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
1Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
003characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
0032using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
0045by vaporising a liquid return stream
F25J 1/0224
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS ; OR LIQUEFIED GASEOUS; MIXTURES BY PRESSURE AND COLD TREATMENT ; OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
1Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
02requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
0221using the cold stored in an external cryogenic component in an open refrigeration loop
0224in combination with an internal quasi-closed refrigeration loop
F25J 2205/60
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS ; OR LIQUEFIED GASEOUS; MIXTURES BY PRESSURE AND COLD TREATMENT ; OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
2205Processes or apparatus using other separation and/or other processing means
60using adsorption on solid adsorbents, e.g. by temperature-swing adsorption [TSA] at the hot or cold end
F25J 2210/42
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS ; OR LIQUEFIED GASEOUS; MIXTURES BY PRESSURE AND COLD TREATMENT ; OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
2210Processes characterised by the type or other details of the feed stream
42Nitrogen
Applicants
Inventors
Priority Data
91162401.06.1978US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CRYOGENIC APPARATUS AND METHOD OF REMOVING FREEZING IMPURITIES FROM A CRYOGENIC FLUID
(FR) APPAREIL ET METHODE CRYOGENIQUE POUR ELIMINER DES IMPURETES CONGELEES D"UN LIQUIDE CRYOGENIQUE
Abstract
(EN)
A cryogenic apparatus and a method performed by the apparatus is disclosed herein with an improved flow path for removing impurities introduced by a make-up stream of cryogenic fluid. In reducing the temperature of the stream in a heat exchange flow path, the impurities are likely to freeze out and clog the heat exchanger. In accordance with the invention, the make-up stream (14) is directed to a means (26, 42) for absorbing the impurities which are likely to freeze in the exchanger (30, 40) prior to combining the make-up stream (14) with the main feed stream (12). The principal use is in cryogenic apparatus to liquify helium cooled below the freezing point of gaseous contaminants to include carbon dioxide and air.
(FR)
Un appareil cryogenique et une methode mise en oeuvre par l"appareil consiste a ameliorer le trajet d"ecoulement afin d"eliminer les impuretes introduites par un courant d"appoint d"un liquide cryogenique. En reduisant la temperature du courant dans un passage d"ecoulement d"echange thermique, les impuretes sont susceptibles de se solidifier et de boucher l"echangeur de chaleur. Selon l"invention, le courant d"appoint (14) est dirige sur des moyens (26, 42) d"absorption des impuretes qui sont susceptibles de se solidifier dans l"echangeur (30, 40) avant la combinaison du courant d"appoint (14) avec le courant d"alimentation principal (12). L"utilisation principale est l"application a un appareil cryogenique de liquefaction d"helium refroidi a une temperature inferieure au point de solidification de contaminants gazeux comprenant le gaz carbonique et l"air.
Also published as
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