DE1089788B - Process for separating solid carbon dioxide from air during its decomposition - Google Patents
Process for separating solid carbon dioxide from air during its decompositionInfo
- Publication number
- DE1089788B DE1089788B DEG27701A DEG0027701A DE1089788B DE 1089788 B DE1089788 B DE 1089788B DE G27701 A DEG27701 A DE G27701A DE G0027701 A DEG0027701 A DE G0027701A DE 1089788 B DE1089788 B DE 1089788B
- Authority
- DE
- Germany
- Prior art keywords
- air
- carbon dioxide
- snow
- gaseous
- liquefied
- 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.)
- Pending
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims description 27
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims description 13
- 239000001569 carbon dioxide Substances 0.000 title claims description 13
- 238000000034 method Methods 0.000 title claims description 8
- 239000007787 solid Substances 0.000 title claims description 6
- 238000000354 decomposition reaction Methods 0.000 title description 2
- 239000007788 liquid Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000001179 sorption measurement Methods 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000029142 excretion Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D7/00—Sublimation
- B01D7/02—Crystallisation directly from the vapour phase
-
- 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
- F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
- F25J3/04242—Cold end purification of the feed air
-
- 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
- F25J3/04303—Lachmann expansion, i.e. expanded into oxygen producing or low 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
- F25J3/04406—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 using a dual pressure main column system
- F25J3/04412—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 using a dual pressure main column system in a classical double column flowsheet, 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
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/20—Processes or apparatus using other separation and/or other processing means using solidification of components
-
- 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
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/84—Processes or apparatus using other separation and/or other processing means using filter
-
- 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
- F25J2220/00—Processes or apparatus involving steps for the removal of impurities
- F25J2220/40—Separating high boiling, i.e. less volatile components from air, e.g. CO2, hydrocarbons
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Carbon And Carbon Compounds (AREA)
- Treating Waste Gases (AREA)
Description
Gegenstand des Hauptpatents ist ein Verfahren zum Abscheiden von festem Kohlendioxyd aus Luft bei deren Zerlegung durch Druck und Kälte, bei dem das Kohlendioxyd teils im gasförmigen Auspuff einer arbeitsleistenden Entspannungsmaschine, teils in verflüssigtem Anteil abgedrosselter Luft als Schnee ausgeschieden wird, der durch Inberührungbringen des schneehaltigen Gases mit verflüssigtem Gas in die Flüssigkeit übergeführt, durch Filtration und Adsorption aus ihr vor ihrer Entspannung in die Niederdruckrektifikationssäule entfernt wird, dadurch gekennzeichnet, daß zwecks Entfernung des Kohlendioxydschnees die gasförmige, Kohlendioxydschnee mitführende Luft mit einem Gemisch aus dem verflüssigten Anteil der Drosselluft und aus der durch weitere Druckrektifikation der gasförmigen Luft gebildeten Flüssigkeit im Gegenstrom und gleichzeitig rektifiziert wird. Dabei wurde von der Voraussetzung ausgegangen, daß die Temperatur der Hochdruckluft vor dem Drosselventil einige Grad über der Temperatur liegen muß, bei der sich festes Kohlendioxyd ausscheidet.The main patent relates to a process for separating solid carbon dioxide from air with their decomposition by pressure and cold, in which the carbon dioxide partly in the gaseous exhaust of a Work-performing relaxation machine, partly excreted as snow in a liquefied proportion of choked air is made by bringing the snow-containing gas into contact with liquefied gas in the Liquid transferred by filtration and adsorption from it before its relaxation in the low pressure rectification column is removed, characterized in that for the purpose of removing the carbon dioxide snow the gaseous, carbon dioxide snow entrained air with a mixture of the liquefied Proportion of the throttle air and that formed by further pressure rectification of the gaseous air Liquid is rectified in countercurrent and at the same time. In doing so, it was based on the requirement assumed that the temperature of the high pressure air in front of the throttle valve is a few degrees above the temperature must lie, in which solid carbon dioxide precipitates.
Dies wird bei dem Verfahren nach dem Hauptpatent dadurch erreicht, daß dem von der Rektifikationssäule kommenden anzuwärmenden Stickstoff eine entsprechend große Menge Luft entgegengeschickt wird, damit sich diese nur so weit abkühlt, daß die oben genannte Voraussetzung erfüllt ist. Das bringt aber mit sich, daß weniger Luft zur Expansionsmaschine geht als im üblichen Falle der Verarbeitung von CO2-freier Luft. Verglichen mit dieser üblichen Arbeitsweise sinkt die Kälteleistung, und die Folge ist, daß ein Teil des erzeugten Sauerstoffs nur noch gasförmig statt flüssig gewonnen werden kann.This is achieved in the process according to the main patent in that the nitrogen to be heated coming from the rectification column is countered with a correspondingly large amount of air so that it only cools down to the extent that the above-mentioned requirement is met. However, this means that less air goes to the expansion machine than in the usual case of processing CO 2 -free air. Compared to this usual way of working, the refrigeration capacity drops, and the result is that some of the oxygen produced can only be obtained in gaseous form instead of liquid.
Dem Gegenstand der Erfindung liegt die Aufgabe zugrunde, den erwähnten Nachteil beim Verarbeiten CÖ2-haltiger Luft zu vermeiden und das Verfahren dadurch wirtschaftlicher zu gestalten.The object of the invention is based on avoiding the disadvantage mentioned when processing CO 2 -containing air and thereby making the process more economical.
Bei dem Gegenstand der Erfindung wird die überraschende Feststellung ausgenutzt, daß eine Unterschreitung der Ausscheidungstemperatur von Kohlendioxyd vor dem Drosselventil bis zu 10° C zu einer Verlegung des Drosselventils mit Kohlendioxyd führt, während dies bei einer Unterschreitung um 10 bis 20° C vermieden wird und keinerlei Störung am Ventil auftritt.In the subject matter of the invention, the surprising Finding exploited that a drop below the excretion temperature of carbon dioxide up to 10 ° C in front of the throttle valve leads to a relocation of the throttle valve with carbon dioxide, while this is avoided if the temperature falls below 10 to 20 ° C and there is no malfunction on the valve occurs.
Demgemäß ist die Erfindung dadurch gekennzeichnet, daß der zum Drosselventil strömende Teil der Hochdruckluft 10 bis 20° C unter die Temperatur abgekühlt wird, bei der die Ausscheidung fester Kohlensäure aus der Hochdruckluft beginnt.Accordingly, the invention is characterized in that the flowing to the throttle valve part of the High pressure air is cooled 10 to 20 ° C below the temperature at which the excretion solidifies Carbon dioxide from the high pressure air begins.
Weil die zum Drosselventil geführte Luftmenge nunmehr kälter werden soll, wird dieser Luftstrom kleiner, dafür wird der arbeitsleistend in der Expan-Because the amount of air sent to the throttle valve is now to be colder, this air flow becomes smaller, but the work-performing in the expansion
von festem Kohlendioxyd aus Luftof solid carbon dioxide from air
bei deren Zerlegungwhen dismantling them
Zusatz zum. Patent 1 044 127Addition to. U.S. Patent 1,044,127
Anmelder:Applicant:
Gesellschaft für Linde's EismaschinenSociety for Linde's ice machines
Aktiengesellschaft,Corporation,
Zweigniederlassung Höllriegelskreuth,
Höllriegelskreuth bei MünchenBranch office Höllriegelskreuth,
Höllriegelskreuth near Munich
Dr.-Ing. Ernst Karwat, Dr. Joseph Weishaupt,Dr.-Ing. Ernst Karwat, Dr. Joseph Weishaupt,
Pullach bei München,Pullach near Munich,
und Jakob Oberpriller, Buchenhain bei München,
sind als Erfinder genannt wordenand Jakob Oberpriller, Buchenhain near Munich,
have been named as inventors
sionsmaschine entspannte Luftstrom größer. Die Verteilung beider Luftströme gleicht ihrer Aufteilung beim üblichen Verfahren der Verarbeitung CO2-freier Luft mit ihrem günstigen hohen Kälteertrag und ihrer hohen Ausbeute an flüssigem Sauerstoff. Zugleich bleibt der Vorzug des Verfahrens nach dem Hauptpatent, daß nämlich die CO2-Entfernung mit Lauge unterbleiben kann, bei dem Verfahren, nach der Erfindung erhalten.sion machine relaxed airflow larger. The distribution of the two air flows is similar to their distribution in the usual process of processing CO 2 -free air with its favorable, high cold yield and its high yield of liquid oxygen. At the same time, the advantage of the method according to the main patent, namely that the CO 2 removal with lye can be omitted, remains in the method according to the invention.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG27701A DE1089788B (en) | 1957-07-31 | 1959-08-12 | Process for separating solid carbon dioxide from air during its decomposition |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG22663A DE1044127B (en) | 1957-07-31 | 1957-07-31 | Process for separating solid carbon dioxide from air during its decomposition and device for carrying out the process |
| DEG27701A DE1089788B (en) | 1957-07-31 | 1959-08-12 | Process for separating solid carbon dioxide from air during its decomposition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1089788B true DE1089788B (en) | 1960-09-29 |
Family
ID=25978101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEG27701A Pending DE1089788B (en) | 1957-07-31 | 1959-08-12 | Process for separating solid carbon dioxide from air during its decomposition |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1089788B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1044127B (en) | 1957-07-31 | 1958-11-20 | Linde Eismasch Ag | Process for separating solid carbon dioxide from air during its decomposition and device for carrying out the process |
-
1959
- 1959-08-12 DE DEG27701A patent/DE1089788B/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1044127B (en) | 1957-07-31 | 1958-11-20 | Linde Eismasch Ag | Process for separating solid carbon dioxide from air during its decomposition and device for carrying out the process |
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