US1800353A - Separation of air into oxygen and nitrogen by liquefaction - Google Patents

Separation of air into oxygen and nitrogen by liquefaction Download PDF

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Publication number
US1800353A
US1800353A US228987A US22898727A US1800353A US 1800353 A US1800353 A US 1800353A US 228987 A US228987 A US 228987A US 22898727 A US22898727 A US 22898727A US 1800353 A US1800353 A US 1800353A
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United States
Prior art keywords
oxygen
nitrogen
column
air
heat interchanger
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Expired - Lifetime
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US228987A
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English (en)
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Messer Adolf
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Individual
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C3/00—Braiding or lacing machines
    • D04C3/02—Braiding or lacing machines with spool carriers guided by track plates or by bobbin heads exclusively
    • D04C3/34—Beater, or beat-up, mechanisms

Definitions

  • This invention relates to the separation of air into oxygen and nitrogen by air liquefaction and separation devices with several airseparation operations-ea g. double column 6 apparatuswhich are adapted to produce.
  • t ere is located the container for the crude oxygen bath which consists of about 50% of 2 oxygen and 50% nitrogen.
  • the boiling point of this crude oxygen is about 167 at a pressure above atmospheric of 5 atmospheres.
  • a heating coil conveying compressed 2 air for evaporating the crude oxygen or maintaining the temperature necessary for its eva oration.
  • the object of the invention is theremoval of the above mentioned causes that lead to the supercooling of the air and consequently of the crude oxygen bath in apparatus of the aforesaid type, and according thereto the gaseous nitrogen issuing from the top of the double column is warmed by the liquid crude oxygen obtained in the first pressure stage before it reaches the compressed air in counter-current.
  • a further important advantage of supercooling both liquids by the cold gaseous nitrogen lies in the fact that they can be cooled before the pressure-reduction valves to a temperature that is nearly equal to that behind the pressure-reduction valves. Gonsequently, the diflerent temperatures which would otherwise obtain before and behind the pressure-reduction valves are equalized. By this means, smaller losses of vapour occur after pressure reduction.
  • pparatus or preventing t c su ercooling of the crude oxygen bath heated by compressed air in the lower portion of a twocolumn air liquefaction and separation device comprising an auxiliary heat interchanger, means or conveying into said auxiliary heat interchanger gaseous nitrogen issuing from the top of the double-column of said liquefaction and separation device, means within said heat interchanger for conducting, in counter-current to said gaseous nitrogen, liquid crude oxygen obtained in the first pressure stage of said liquefaction and separation device, and means for conducting 2.
  • Apparatus for preventing the supercooling of the crude oxygen bath heated by compressed air in the lower portion-of a twocolumn air .liquefaction and separation device comprising an auxiliary heat inter-' changer, means for conveying into 'said auxiliary heat interchanger gaseous nitrogen issuing from the top of the double-column of said liquefaction and separation device,
  • means within said heat interchanger for conducting, in counter-current to said gaseous nitrogen, liquid crude oxygen obtained in the first pressure stage of said liquefaction and separation device, and means for conducting the finished oxygen and warmed gaseous nitrogen in thermal contact with each other to the compressed air.
  • Apparatus for preventing the supercooling of the crude oxygen bath heated by compressed air in the lower portion of a twocolumn air liquefaction and separation device comprising an auxiliary heat interchanger, means for conveying-into said auxiliary heat interchanger gaseous nitrogen issuing from the top of the double-column of said liquefaction and separation device, means within said-heat interchanger for conducting, in counter-current to said gaseous nitrogen, liquid crude 0 gen obtained in the first pressure stage 0 said liquefaction and separation device, means within said heat interchanger for conducting, in countercurrent to said gaseous nitrogen, liquid nitrogen obtained in the first pressure stage, and means for conducting the finished oxygen and warmed gaseous nitro en inthermal contact with each other 0 the compressed air.
  • a heat interchanger of the countercurrent t 0 having means for conveying through said heat interchanger in one direction t e gaseous nitrogen from the top of the lower pressure column of said apparatus, means for conveying through said heat interchanger in the opposite direction crude-liquid oxygen from the bottom of the higher pressure column to the lower pressure column intermediate of the ends of the latter, and means for conveying through said heat interehanger inthe last mentioned direction condensate from the upper end of the hi her pressure column to the upper end of the owerfu'essure column.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation By Low-Temperature Treatments (AREA)
US228987A 1926-11-15 1927-10-27 Separation of air into oxygen and nitrogen by liquefaction Expired - Lifetime US1800353A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE280581T 1926-11-15

Publications (1)

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US1800353A true US1800353A (en) 1931-04-14

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US228987A Expired - Lifetime US1800353A (en) 1926-11-15 1927-10-27 Separation of air into oxygen and nitrogen by liquefaction

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US (1) US1800353A (enrdf_load_stackoverflow)
GB (1) GB280581A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3203866A (en) * 1958-12-02 1965-08-31 Linde Eismasch Ag Process and means for removing radioactive components from gases and gaseous mixtures
US3535886A (en) * 1967-07-05 1970-10-27 Mc Donnell Douglas Corp Production of high purity nitrogen from air by distillation with depressurized,work expanded and cooled oxygen-rich bottoms used in indirect heat exchange for the distillation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3203866A (en) * 1958-12-02 1965-08-31 Linde Eismasch Ag Process and means for removing radioactive components from gases and gaseous mixtures
US3535886A (en) * 1967-07-05 1970-10-27 Mc Donnell Douglas Corp Production of high purity nitrogen from air by distillation with depressurized,work expanded and cooled oxygen-rich bottoms used in indirect heat exchange for the distillation

Also Published As

Publication number Publication date
GB280581A (enrdf_load_stackoverflow) 1929-02-11

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