IT1037653B - PROCEDURE FOR THE SEPARATION OF AIR AT LOW TEMPERATURES - Google Patents
PROCEDURE FOR THE SEPARATION OF AIR AT LOW TEMPERATURESInfo
- Publication number
- IT1037653B IT1037653B IT2276275A IT2276275A IT1037653B IT 1037653 B IT1037653 B IT 1037653B IT 2276275 A IT2276275 A IT 2276275A IT 2276275 A IT2276275 A IT 2276275A IT 1037653 B IT1037653 B IT 1037653B
- Authority
- IT
- Italy
- Prior art keywords
- air
- condenser
- vol
- liquefied
- per cent
- Prior art date
Links
Classifications
-
- 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
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
- F25J3/0429—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column
- F25J3/04296—Claude expansion, i.e. expanded into the main or high pressure column
-
- 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
- F25J3/04642—Recovering noble gases from air
- F25J3/04648—Recovering noble gases from air argon
- F25J3/04654—Producing crude argon in a crude argon column
- F25J3/04709—Producing crude argon in a crude argon column as an auxiliary column system in at least a dual pressure main column system
- F25J3/04715—The auxiliary column system simultaneously produces oxygen
-
- 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
- F25J2200/00—Processes or apparatus using separation by rectification
- F25J2200/04—Processes or apparatus using separation by rectification in a dual pressure main column system
- F25J2200/06—Processes or apparatus using separation by rectification in a dual pressure main column system in a classical double column flow-sheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
-
- 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
- F25J2200/00—Processes or apparatus using separation by rectification
- F25J2200/50—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column
-
- 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
- F25J2215/00—Processes characterised by the type or other details of the product stream
- F25J2215/50—Oxygen or special cases, e.g. isotope-mixtures or low purity O2
- F25J2215/56—Ultra high purity oxygen, i.e. generally more than 99,9% O2
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
1471496 Separating air LENINGRAD TEKHNOLOGICH INST KHOLODIL PROMYSHLEN 21 April 1975 [26 April 1974] 16323/75 Heading F4P An air separation process comprises removing dust from the feed air at 1, compressing it to 180-200 kgl./cm.<SP>2</SP> at 2, removing CO 2 and acetylene at 5 and drying the air to give it a dew point of - 60‹ to - 70‹ C., cooling a part of the dried air at 7 to below the saturation point to partially condense it, the other part being expanded at 6, and then recombining the parts before passing them to a preliminary rectification column 8 to produce liquefied N 2 from condenser 9 and an O 2 -enriched liquefied air bottoms, and supercooling the liquefied N 2 and bottoms at 11 before subjecting them to secondary rectification in column 12 to produce a gaseous N 2 overhead containing less than 0À3 vol. per cent O 2 and Argon impurities, a gaseous O 2 -A mixture, and a liquefied O 2 -A mixture which is used to liquefy the N 2 in condenser 9 and which contains up to 4À5 vol. per cent Argon, the gaseous O 2 -A mixture being then subjected to further rectification in column 13 to produce an argon fraction from condenser 14 which has 0À1-3À0 vol. per cent O 2 and less than 0À1 vol. per cent N 2 therein, and an O 2 fraction from the intertube space of condenser 10 of 99À7 to 99À99% purity.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2015808 | 1974-04-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1037653B true IT1037653B (en) | 1979-11-20 |
Family
ID=20581885
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT2276275A IT1037653B (en) | 1974-04-26 | 1975-04-24 | PROCEDURE FOR THE SEPARATION OF AIR AT LOW TEMPERATURES |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPS51130695A (en) |
CS (1) | CS180852B1 (en) |
DD (1) | DD120081A1 (en) |
DE (1) | DE2518012A1 (en) |
FR (1) | FR2269044B1 (en) |
GB (1) | GB1471496A (en) |
IT (1) | IT1037653B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4345925A (en) * | 1980-11-26 | 1982-08-24 | Union Carbide Corporation | Process for the production of high pressure oxygen gas |
JPS61259077A (en) * | 1986-05-08 | 1986-11-17 | 株式会社神戸製鋼所 | Method of separating air |
US4822395A (en) * | 1988-06-02 | 1989-04-18 | Union Carbide Corporation | Air separation process and apparatus for high argon recovery and moderate pressure nitrogen recovery |
DE19700644A1 (en) * | 1997-01-10 | 1998-07-16 | Linde Ag | Removal of acetylene during air separation |
-
1975
- 1975-04-21 GB GB1632375A patent/GB1471496A/en not_active Expired
- 1975-04-23 DE DE19752518012 patent/DE2518012A1/en active Pending
- 1975-04-23 CS CS284575A patent/CS180852B1/en unknown
- 1975-04-24 DD DD18568175A patent/DD120081A1/xx unknown
- 1975-04-24 IT IT2276275A patent/IT1037653B/en active
- 1975-04-25 FR FR7513094A patent/FR2269044B1/fr not_active Expired
- 1975-04-26 JP JP5125675A patent/JPS51130695A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE2518012A1 (en) | 1975-11-06 |
FR2269044A1 (en) | 1975-11-21 |
DD120081A1 (en) | 1976-05-20 |
CS180852B1 (en) | 1978-02-28 |
JPS51130695A (en) | 1976-11-13 |
GB1471496A (en) | 1977-04-27 |
FR2269044B1 (en) | 1979-03-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1509789A (en) | Low temperature process for the separation of gaseous mixtures with reduced energy requirements | |
GB1297082A (en) | ||
JPS5544307B2 (en) | ||
ES300603A1 (en) | Freezing out contaminant methane in the recovery of hydrogen from industrial gases | |
GB1450843A (en) | Method for recovering chlorine from chlorine-containing gaseous mixtures containing carbon dioxide as one component | |
GB1021453A (en) | Purification of carbon dioxide | |
GB1322931A (en) | Method and apparatus for the separation of carbon dioxide from admixture with acidic gas | |
GB972044A (en) | Purification of carbon dioxide | |
GB935605A (en) | Method of recovering silicon dioxide | |
GB1365801A (en) | Separation of gases | |
GB1371327A (en) | Air separation | |
GB957790A (en) | Improvements in or relating to gas separation | |
IT1037653B (en) | PROCEDURE FOR THE SEPARATION OF AIR AT LOW TEMPERATURES | |
GB784590A (en) | Improvements in or relating to the cold separation of air | |
ES8506204A1 (en) | Cryogenic process for removing acid gases from gas mixtures by means of a solvent | |
US3493339A (en) | Production of carbon dioxide and argon | |
GB1165483A (en) | Distillative, Separation of Chlorine from a Gas Mixture containing Chlorine, Nitrogen Dioxide, Nitrosyl Chloride and Oxygen | |
GB938073A (en) | Method and apparatus for liquefying gaseous chlorine | |
GB804944A (en) | Process and apparatus for the low temperature separation of air | |
GB877091A (en) | Low temperature purification of carbon dioxide | |
GB873427A (en) | Apparatus and method for fractionation of gaseous mixtures | |
GB996480A (en) | Improvements relating to the production of gaseous oxides | |
GB1532334A (en) | Hydrocarbon gas processing | |
GB1532336A (en) | Hydrocarbon gas processing | |
GB886023A (en) | Improvements in or relating to the purification of gases or gaseous mixtures |