GB756901A - Improvements in the cold separation of gas mixtures - Google Patents
Improvements in the cold separation of gas mixturesInfo
- Publication number
- GB756901A GB756901A GB29296/54A GB2929654A GB756901A GB 756901 A GB756901 A GB 756901A GB 29296/54 A GB29296/54 A GB 29296/54A GB 2929654 A GB2929654 A GB 2929654A GB 756901 A GB756901 A GB 756901A
- Authority
- GB
- United Kingdom
- Prior art keywords
- duct
- liquid
- column
- nitrogen
- reflux
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S62/00—Refrigeration
- Y10S62/902—Apparatus
- Y10S62/905—Column
- Y10S62/907—Insulation
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)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
756,901. Cold separation of gas mixtures. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Oct. 11, 1954 [Oct. 9, 1953], No. 29296/54. Class 8(2). In a low temperature gas mixture fractionating apparatus wherein thermal energy is extracted from the head of a rectification column 1, Fig. 1, by removal of vapour through a duct 15 to a space adjacent the freezer of a refrigerator 17 of the reversed hot gas engine type where it is condensed and returned to the column as reflux, at least part of the condensate is forced by bubble pump action up ducts 21, 22 so as to discharge into the column at a point above that at which it leaves the refrigerator 17 and means is provided whereby the supply of reflux is governed by the level of liquid, i.e., the high boiling constituent in the evaporatorboiler 2 of the column 1 ; the remainder of the condensate being withdrawn from the column through a duct 24 and a liquid trap 25. In operation air freed of water vapour and carbon dioxide and cooled by oxygen vapour returning from the boiler 2 through a heat exchanger 4 traverses an annular cooling duct 8 and enters the column 1 through apertures 9 at subatmospheric pressure. The forcing of liquid nitrogen up ducts 21, 22 which rise from an annular duct 20 supplied with liquid nitrogen from the refrigerator 17 is effected by vapour plugs generated by heat conducted along a copper rod 26 connected to the ducts 21, 22 and to one end of a copper rod 27 having its other end connected to the warm end of the exchanger 4 and its mid-portion connected to vanes 30 located in an overflow chamber 29 of the liquid oxygen boiler 2. Cooling of the vanes 30 by overflowing liquid oxygen results in decreased flow of reflux nitrogen up ducts 21, 22 and a consequential fall in the oxygen level in boiler 2. Forcing of liquid nitrogen up a discharge duct 23 is effected by vapour plugs generated by heat conducted through the wall of duct 8. In a modification the latter means effects the forcing of reflux nitrogen up ducts 21, 22 and flow of reflux is effected by heat conducted along a copper rod having one end connected to the duct 23 and the other end dipping in the overflow chamber, the oxygen content of which being at a higher temperature than the incoming liquid nitrogen results in an increased discharge of nitrogen from the column and a corresponding decreased supply of reflux to it. In a further modification vapour rising from the boiler 2, Fig. 5, is condensed to provide reflux by vaporization of an auxiliary liquid, e.g., nitrogen traversing a condenser 50 and is also condensed by vaporization of said nitrogen traversing a condenser 51 and collected in an annular duct 62 from which it is discharged from the column through a duct 63. Nitrogen vapours from condensers 50, 51 are led to the refrigerator 18 where they are condensed and the condensate is supplied through a duct 55 to an annular duct 56 from which it is forced by bubble pump action effected by thermal conduction along rods 61, 27 and vanes 30 as described with reference to Fig. 1 up ducts 57, 58 to the condenser 50. Liquid nitrogen from duct 56 is also forced up ducts 59, 60 to condenser 51 by bubble pump action effected by thermal conduction through the wall of annular duct 8. The proportion of reflux supplied to the column to the liquid discharged through duct 63 depends on the relative amounts of auxiliary liquid supplied to the condensers 50, 51 and this in turn depends on the level of liquid oxygen in the boiler 2. Specifications 695,857 [Group XIII], 756,895, and 756,897 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL330616X | 1953-10-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB756901A true GB756901A (en) | 1956-09-12 |
Family
ID=19784350
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB29296/54A Expired GB756901A (en) | 1953-10-09 | 1954-10-11 | Improvements in the cold separation of gas mixtures |
Country Status (6)
Country | Link |
---|---|
US (1) | US2799141A (en) |
BE (1) | BE532386A (en) |
CH (1) | CH330616A (en) |
DE (1) | DE941795C (en) |
FR (1) | FR1116769A (en) |
GB (1) | GB756901A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL196107A (en) * | 1955-03-30 | |||
NL97494C (en) * | 1958-05-19 | |||
NL113690C (en) * | 1959-03-17 | 1967-06-15 | ||
NL269433A (en) * | 1961-09-20 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB129989A (en) * | 1919-07-08 | |||
US1594336A (en) * | 1922-02-16 | 1926-07-27 | Mewes Rudolf Ferdinand | Process for separating gas mixtures, more especially air or other difficultly liquefiable gas mixtures |
FR587688A (en) * | 1924-08-21 | 1925-04-22 | Process for the separation of elements from gas mixtures | |
FR599885A (en) * | 1924-09-25 | 1926-01-22 | L Oxylithe Soc | Improvements in the manufacture of oxygen |
US2142446A (en) * | 1934-09-27 | 1939-01-03 | Linde S Eisemaschinen A G Ges | Process and apparatus for the separation of gases by rectification |
US2650482A (en) * | 1948-04-29 | 1953-09-01 | Kellogg M W Co | Method of separating gas mixtures |
-
0
- BE BE532386D patent/BE532386A/xx unknown
-
1954
- 1954-10-05 US US460362A patent/US2799141A/en not_active Expired - Lifetime
- 1954-10-07 DE DEN9571A patent/DE941795C/en not_active Expired
- 1954-10-07 FR FR1116769D patent/FR1116769A/en not_active Expired
- 1954-10-08 CH CH330616D patent/CH330616A/en unknown
- 1954-10-11 GB GB29296/54A patent/GB756901A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH330616A (en) | 1958-06-15 |
US2799141A (en) | 1957-07-16 |
BE532386A (en) | |
DE941795C (en) | 1956-04-19 |
FR1116769A (en) | 1956-05-11 |
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