DE480815C - Process for removing frost from cold exchangers, in particular for gas separation plants - Google Patents

Process for removing frost from cold exchangers, in particular for gas separation plants

Info

Publication number
DE480815C
DE480815C DEF65012D DEF0065012D DE480815C DE 480815 C DE480815 C DE 480815C DE F65012 D DEF65012 D DE F65012D DE F0065012 D DEF0065012 D DE F0065012D DE 480815 C DE480815 C DE 480815C
Authority
DE
Germany
Prior art keywords
cold
gas separation
frost
separation plants
exchangers
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
Application number
DEF65012D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AUTOGEN GASACCUMULATOR KRUEKL
Original Assignee
AUTOGEN GASACCUMULATOR KRUEKL
Publication date
Priority to DEF65012D priority Critical patent/DE480815C/en
Application granted granted Critical
Publication of DE480815C publication Critical patent/DE480815C/en
Expired legal-status Critical Current

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
    • F25J3/08—Separating gaseous impurities from gases or gaseous mixtures or from liquefied gases or liquefied gaseous mixtures
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Gases (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Description

Verfahren zur Entfernung des Reifs aus Kältetauschern, insbesondere für Gaszerlegungsanlagen Ein großer übelstand ist die unvermeidliche Verstopfung der Kältetauscher beim Betrieb von Gaszerlegungsanlagen durch den Reif aus der Feuchtigkeit und dem Kohlensäuregehalt der Luft.Process for removing frost from cold exchangers, in particular for gas separation plants A major problem is the inevitable clogging the cold exchanger in the operation of gas separation plants through the frost from the moisture and the carbon dioxide content of the air.

Bisher wurde dieser Reif durch Auftauen beseitigt, was aber stets größere Betriebsunterbrechungen und bedeutenden Kälteverlust verursachte.So far, this frost has been removed by thawing, but this has always been the case caused major business interruptions and significant loss of cold.

Nach dem hier zu beschreibenden neuen Verfahren soll der Reif nicht mehr durch Auftauen, sondern durch trockenes Ausblasen entfernt werden.According to the new process to be described here, the frost should not can be removed more by thawing, but by dry blowing.

Zu diesem Behufe werden die Kältetauscher a, soweit dies nicht schon ohnedies der Fall ist, von Zeit zu Zeit unter a bis 5 Atm. Druck gesetzt. Sodann wird nach vorausgegangenem Abschluß des Gaseintritts b ein Nebenauslaß c mit Momentverschluß d geöffnet, so daß die unter Überdruck in den Kältetauschern befindlichen Gase ganz plötzlich entweichen können, wobei für einen Augenblick eine sehr große Strömung in den Kiältetauschern entsteht, welche den Reif mit herausbläst.For this purpose, the cold exchangers a, if this is not already done anyway, from time to time below a to 5 atm. Pressure set. Then After the gas inlet b has been closed, a secondary outlet c with a momentary lock becomes d opened, so that the gases under overpressure in the cold exchangers are completely can suddenly escape, with a very large current for a moment arises in the cold exchangers, which blow out the frost.

Der Vorgang wird mehrmals wiederholt, bis die Kältetauscher in der Hauptsache von Reif befreit sind.The process is repeated several times until the cold exchanger is in the The main thing is to be freed from frost.

Voraussetzung für die Durchführungsmöglichkeit dieses Verfahrens ist, daß die Gase vor dem Eintritt in die Kältetauscher unter 5° C. abgekühlt werden, damit sich die Feuchtigkeit nur in Form von lockerem Reif ausscheiden kann. Dies ist jedoch in der Regel der Fall, weil bei der Gaszerlegung meist eine Vorkühlung durch eine Ammoniakmaschine erfolgt.The prerequisite for the possibility of carrying out this procedure is, that the gases are cooled to below 5 ° C before entering the cold exchanger, so that the moisture can only excrete in the form of loose frost. this is usually the case, however, because the gas separation usually involves pre-cooling done by an ammonia machine.

Das Verfahren ist auch für Anlagen mit Kältespeicherumschaltwechselbetrieb als auch für Röhrenkältetauscher mit kontinuierlichem Betrieb anwendbar. Bei letzterem kann jedes Rohr für sich ausgeblasen werden, sofern der Kältetauscher aus einzelnen Rohrspiralen besteht.The procedure is also suitable for systems with cold storage alternating operation as well as for tubular cold exchangers with continuous operation. With the latter each pipe can be blown out separately, provided the cold exchanger is made up of individual There is pipe spirals.

Von Vorteil ist es, die Metauscher so anzuordnen, daß der Gaseintritt und -au.-stritt von unten erfolgt.It is advantageous to arrange the exchangers so that the gas inlet and -au.-controversy takes place from below.

Claims (1)

PATENTANSPRUCH: Verfahren zur Entfernung des Reifs aus Kältetauschern, bei denen die Eintrittstemperatur des abzukühlenden Gasgemisches unter dem Gefrierpunkt des Wassers liegt, insbesondere für Gaszerlegungsanlagen, dadurch gekennzeichnet, daß,der Raum für das abzukühlende Gasgemisch, sofern er nicht ohnedies unter Überdruck steht, zeitweilig unter a bis 5 Atm. Überdruck gesetzt wird und dann ein Nebenauslaß geöffnet wird zum Zwecke, durch die mit der plötzlichen Druckentlastung verbundene große Strömung den Reif ohne Auftauen auszublasen.PATENT CLAIM: Process for removing frost from cold exchangers, at which the inlet temperature of the gas mixture to be cooled is below freezing point of the water, in particular for gas separation plants, characterized in that, the space for the gas mixture to be cooled, provided that it is not already under excess pressure stands, temporarily below a to 5 atm. Overpressure is set and then a bypass outlet is opened for the purpose of being connected with the sudden pressure relief large currents to blow out the frost without thawing.
DEF65012D Process for removing frost from cold exchangers, in particular for gas separation plants Expired DE480815C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF65012D DE480815C (en) Process for removing frost from cold exchangers, in particular for gas separation plants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF65012D DE480815C (en) Process for removing frost from cold exchangers, in particular for gas separation plants

Publications (1)

Publication Number Publication Date
DE480815C true DE480815C (en) 1929-08-08

Family

ID=7110111

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF65012D Expired DE480815C (en) Process for removing frost from cold exchangers, in particular for gas separation plants

Country Status (1)

Country Link
DE (1) DE480815C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1100058B (en) * 1957-07-26 1961-02-23 Philips Nv Device for separating components from a gas and / or vapor mixture by cooling the mixture
DE19820133C2 (en) * 1998-05-06 2001-04-19 Stiebel Eltron Gmbh & Co Kg Heat exchanger

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1100058B (en) * 1957-07-26 1961-02-23 Philips Nv Device for separating components from a gas and / or vapor mixture by cooling the mixture
DE19820133C2 (en) * 1998-05-06 2001-04-19 Stiebel Eltron Gmbh & Co Kg Heat exchanger

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