EP0524432A1 - Dispositif pour la fabrication d'un courant de gaz froid sous pression - Google Patents

Dispositif pour la fabrication d'un courant de gaz froid sous pression Download PDF

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Publication number
EP0524432A1
EP0524432A1 EP92110375A EP92110375A EP0524432A1 EP 0524432 A1 EP0524432 A1 EP 0524432A1 EP 92110375 A EP92110375 A EP 92110375A EP 92110375 A EP92110375 A EP 92110375A EP 0524432 A1 EP0524432 A1 EP 0524432A1
Authority
EP
European Patent Office
Prior art keywords
pressure vessel
cold gas
mixing section
connection
liquid component
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.)
Granted
Application number
EP92110375A
Other languages
German (de)
English (en)
Other versions
EP0524432B1 (fr
Inventor
Jürgen Busse
Erwin Schmitz
Wolfgang Volker
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.)
Messer Griesheim GmbH
Original Assignee
Messer Griesheim GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Messer Griesheim GmbH filed Critical Messer Griesheim GmbH
Publication of EP0524432A1 publication Critical patent/EP0524432A1/fr
Application granted granted Critical
Publication of EP0524432B1 publication Critical patent/EP0524432B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/10—Mixing gases with gases
    • B01F23/12—Mixing gases with gases with vaporisation of a liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/48—Mixing liquids with liquids; Emulsifying characterised by the nature of the liquids
    • B01F23/481—Mixing liquids with liquids; Emulsifying characterised by the nature of the liquids using liquefied or cryogenic gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media

Definitions

  • the invention relates to a device for producing a pressurized cold gas stream by heat exchange and mixing a gaseous component with a cold liquid component, according to the features of claim 1.
  • Cold gas streams under pressure are increasingly required in various technical fields. These are primarily areas of application in which the low temperature of a liquefied low-boiling gas, for example liquid nitrogen, is not desired. In such cases, it is inexpensive to produce the gas stream from a cold liquid component, for example from liquid nitrogen, and a gaseous component, for example gaseous nitrogen at ambient temperature.
  • a cold liquid component for example from liquid nitrogen
  • a gaseous component for example gaseous nitrogen at ambient temperature.
  • Such cold gas flows under pressure are used, for example, for deburring molded rubber parts by cryogenic gun blasting (4 to 15 bar; -40 to -120 ° C), for additional internal cooling when blowing plastic hollow bodies (2 to 12 bar; -40 to -150 ° C and when cold gas polishing highly elastic paints on the production line (0.02 to 5 bar; -20 to -120 ° C).
  • the invention has for its object to provide a device for producing a pressurized cold gas stream by heat exchange and mixing a gaseous component with a cold liquid component, which works equally well in both continuous and discontinuous operation, from one mode of operation to the other others can be converted and is simple and inexpensive to manufacture.
  • the device according to the invention works with direct heat exchange between the gaseous and the liquid component.
  • the difficulties that had to be overcome in this context were primarily the long residence time which the liquid droplets in the gaseous component need to evaporate completely.
  • the formation of a cold gas stream from gaseous and liquid nitrogen the liquid droplets require an at least 4m long mixing section for complete evaporation. This distance could at best be shortened by using additional atomizing devices, which would however make the device more expensive and make it sluggish depending on the operating conditions. Due to the arrangement of the mixing section in a pressure vessel according to the invention, however, the device can be made compact.
  • the pressure vessel serves as a pressure pulsation damper. It is advantageous to provide the pressure vessel with a bed, for example made of VA-Raschig rings. This enables particularly precise temperature control, for example in discontinuous operation, ie surge operation at constant temperature. For the desired fast and precise temperature control, especially in the case of discontinuous operation, a control specification serves for the pressure and temperature-controlled introduction of the liquid component.
  • the operation of the device according to the invention is of course not limited to the production of a cold compressed gas stream from gaseous and liquid nitrogen. Dry air, carbon dioxide and other gases can also be considered as gaseous components.
  • the liquid component can also consist of carbon dioxide or argon, for example.
  • the liquid component can also contain solid components, for example liquid nitrogen with frozen carbon dioxide particles or hydrogen slush from liquid and frozen hydrogen.
  • the drawing shows a pressure vessel 1 with insulation 2.
  • a long tubular mixing section 3 is arranged in the pressure vessel 1, which opens into the interior of the pressure vessel 1.
  • the other end of the mixing section 3 is guided through the cover 4 of the pressure vessel 1 to a connection 5.
  • the mixing section 3 is surrounded by a bed 8 of VA rings, which is arranged in a screen fabric 9.
  • a valve 10 At the bottom of the pressure vessel 1 there is a valve 10 through which water can be drawn off. For example, the water can separate if air that is not completely dried is used as the gaseous component.
  • the device is provided with a pressure relief valve 11, which responds to excessively high pressures in the pressure vessel 1.
  • the supply of the liquid component is controlled by a control specification 12, which detects the temperature in the mixing section 3 and the pressure in the connection 6.
  • the mixing section 3 is so long that complete evaporation of the liquid component is ensured even during continuous operation and low temperatures. In a practical device, the mixing section is 3 4m long.
  • the pressurized gaseous component is introduced into the mixing section through the connection 5 via the valve 13.
  • the liquid component flows through the Connection 6 via the control valve 14, the liquid component. Their amount is controlled by the rule specification 12. In this way, any freely selectable temperature below the temperature of the gaseous component to just above the temperature of the liquid component can be achieved.
  • the liquid component is under a higher pressure than the gaseous component. It is injected into the mixing section 3, evaporates there and leaves the mixing section 3 as a cold gas stream. Through the connection 7 and the valve 15, the cold gas stream can be discharged from the device at a freely selectable pressure. This pressure can be freely selected up to the permissible operating pressure of the pressure vessel 1.
  • the prerequisite is that the pressure of the liquid component is greater than that of the gaseous component.
  • a pressure of the liquid component which is 0.1 to 1.5 bar higher is sufficient.
  • the pressure of the liquid component can be significantly higher, for example liquid nitrogen below 15 bar and gaseous nitrogen below 8 bar.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
EP92110375A 1991-07-23 1992-06-19 Dispositif pour la fabrication d'un courant de gaz froid sous pression Expired - Lifetime EP0524432B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4124336A DE4124336A1 (de) 1991-07-23 1991-07-23 Vorrichtung zur herstellung eines unter druck stehenden kalten gasstromes
DE4124336 1991-07-23

Publications (2)

Publication Number Publication Date
EP0524432A1 true EP0524432A1 (fr) 1993-01-27
EP0524432B1 EP0524432B1 (fr) 1995-10-25

Family

ID=6436787

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92110375A Expired - Lifetime EP0524432B1 (fr) 1991-07-23 1992-06-19 Dispositif pour la fabrication d'un courant de gaz froid sous pression

Country Status (5)

Country Link
EP (1) EP0524432B1 (fr)
JP (1) JPH05248776A (fr)
AT (1) ATE129432T1 (fr)
DE (2) DE4124336A1 (fr)
ES (1) ES2080381T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995008387A1 (fr) * 1993-09-24 1995-03-30 Lentek S.R.L. Procede et dispositif de formation et d'utilisation regulees d'une atmosphere gazeuse ayant au moins deux constituants, et application a des installations de traitement thermique ou de cementation
EP2679879A2 (fr) 2012-06-27 2014-01-01 Messer Group GmbH Dispositif de surfusion de gaz liquides à bas point d'ébullition
EP3594554A1 (fr) 2018-07-11 2020-01-15 Messer Group GmbH Dispositif de sous-refroidissement des gaz liquéfiés
CN112370947A (zh) * 2020-11-17 2021-02-19 宁波顺泽橡胶有限公司 一种节能环保型丁腈橡胶改造废气废热回收利用装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019016909A1 (fr) * 2017-07-20 2019-01-24 日新ネオ株式会社 Échangeur de chaleur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR318331A (fr) * 1902-02-03 1902-10-14 Benoit De Laitte Procédés et appareil pour la production d'un mélange intime entre l'air ou un gaz comburant et les vapeurs d'un liquide combustible, particulièrement applicables à la carburation de l'air
FR9850E (fr) * 1908-06-25 1909-02-02 Charles Leclercq Procédé et appareil de fabrication de gaz carburés à l'aide d'hydrocarbures liquides volatils, alcools, essence de pétrole et autres
FR2133330A5 (fr) * 1971-04-16 1972-11-24 Oreal
EP0411500A1 (fr) * 1989-08-02 1991-02-06 Hoechst Aktiengesellschaft Dispositif pour la fabrication de mélanges gaz-vapeur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR318331A (fr) * 1902-02-03 1902-10-14 Benoit De Laitte Procédés et appareil pour la production d'un mélange intime entre l'air ou un gaz comburant et les vapeurs d'un liquide combustible, particulièrement applicables à la carburation de l'air
FR9850E (fr) * 1908-06-25 1909-02-02 Charles Leclercq Procédé et appareil de fabrication de gaz carburés à l'aide d'hydrocarbures liquides volatils, alcools, essence de pétrole et autres
FR2133330A5 (fr) * 1971-04-16 1972-11-24 Oreal
EP0411500A1 (fr) * 1989-08-02 1991-02-06 Hoechst Aktiengesellschaft Dispositif pour la fabrication de mélanges gaz-vapeur

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995008387A1 (fr) * 1993-09-24 1995-03-30 Lentek S.R.L. Procede et dispositif de formation et d'utilisation regulees d'une atmosphere gazeuse ayant au moins deux constituants, et application a des installations de traitement thermique ou de cementation
US5749978A (en) * 1993-09-24 1998-05-12 Lentek S.R.L. Method and device for the controlled forming and feeding of a gaseous atmosphere having at least two components, and application in plants of thermal or carburizing treatment
EP2679879A2 (fr) 2012-06-27 2014-01-01 Messer Group GmbH Dispositif de surfusion de gaz liquides à bas point d'ébullition
DE102012013300A1 (de) 2012-06-27 2014-01-02 Messer Group Gmbh Vorrichtung zum Unterkühlen von tiefsiedenden Flüssiggasen
DE102012013300B4 (de) * 2012-06-27 2017-11-09 Messer Group Gmbh Vorrichtung zum Unterkühlen von tiefsiedenden Flüssiggasen
EP3594554A1 (fr) 2018-07-11 2020-01-15 Messer Group GmbH Dispositif de sous-refroidissement des gaz liquéfiés
DE102018005503A1 (de) 2018-07-11 2020-01-16 Messer Group Gmbh Vorrichtung zum Unterkühlen von verflüssigten Gasen
CN112370947A (zh) * 2020-11-17 2021-02-19 宁波顺泽橡胶有限公司 一种节能环保型丁腈橡胶改造废气废热回收利用装置
CN112370947B (zh) * 2020-11-17 2022-07-12 宁波顺泽橡胶有限公司 一种节能环保型丁腈橡胶改造废气废热回收利用装置

Also Published As

Publication number Publication date
ATE129432T1 (de) 1995-11-15
EP0524432B1 (fr) 1995-10-25
DE4124336A1 (de) 1993-01-28
DE59204108D1 (de) 1995-11-30
JPH05248776A (ja) 1993-09-24
ES2080381T3 (es) 1996-02-01

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