EP2475616A2 - Procédé et dispositif de production de particules de dioxyde de carbone solides - Google Patents

Procédé et dispositif de production de particules de dioxyde de carbone solides

Info

Publication number
EP2475616A2
EP2475616A2 EP10749872A EP10749872A EP2475616A2 EP 2475616 A2 EP2475616 A2 EP 2475616A2 EP 10749872 A EP10749872 A EP 10749872A EP 10749872 A EP10749872 A EP 10749872A EP 2475616 A2 EP2475616 A2 EP 2475616A2
Authority
EP
European Patent Office
Prior art keywords
carbon dioxide
liquid carbon
nozzle assembly
cooled
brought
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.)
Ceased
Application number
EP10749872A
Other languages
German (de)
English (en)
Inventor
Thomas Böckler
Friedhelm Herzog
Joachim Hertrampf
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 Group GmbH
Original Assignee
Messer Group 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 Group GmbH filed Critical Messer Group GmbH
Publication of EP2475616A2 publication Critical patent/EP2475616A2/fr
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/50—Carbon dioxide
    • C01B32/55—Solidifying
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock

Definitions

  • the invention relates to a method for producing solid carbon dioxide particles.
  • the invention further relates to a suitable for carrying out the method
  • the object of the invention is thus to provide a method and a device for
  • This object is achieved by a method in which liquid carbon dioxide in a heat exchanger brought into thermal contact with a refrigerant and brought to a temperature just above its solidification temperature (based on the pressure that the liquid carbon dioxide in thermal contact has), the cooled liquid carbon dioxide is then supplied to a cooled by contact with a refrigerant nozzle assembly is further cooled by thermal contact with the nozzle assembly and escapes from an orifice of the nozzle assembly in the form of solid carbon dioxide particles.
  • the liquid carbon dioxide is thus in the first
  • Heat exchanger cooled strongly, but remains in the liquid state.
  • the carbon dioxide in the liquid state can easily be promoted, on the other hand, within the nozzle arrangement, a relatively small heat exchanger surface is sufficient to further cool the carbon dioxide to the target temperature, which is approximately that Freezing temperature or a temperature below the freezing temperature corresponds. As a result, the expenditure on equipment is substantially reduced.
  • Carbon dioxide is brought to a pressure of 20 to 100 bar before it is fed to the first heat exchanger or before it is fed to the nozzle assembly. Due to the increased pressure is achieved, if necessary in the
  • Solid carbon dioxide located nozzle assembly is remelted and can be discharged.
  • the liquid carbon dioxide is brought by the thermal contact with the nozzle assembly to a temperature below its freezing point.
  • the carbon dioxide thus solidifies already within the nozzle assembly and is discharged as a solid. This minimizes losses due to the transfer of carbon dioxide to the gaseous state.
  • the liquid carbon dioxide is cooled by the thermal contact with the nozzle assembly so far that the liquid carbon dioxide at least largely merges with its relaxation at an outlet of the nozzle assembly in the solid state.
  • the carbon dioxide is in this alternative within the
  • the nozzle arrangement has cooled down only so far that, at the exit from the nozzle arrangement, it is at least partially still in the liquid state.
  • the final transition to the solid state occurs during cooling due to the relaxation of the carbon dioxide. Since the liquid carbon dioxide is at least almost cooled to its freezing point of minus 78.4 ° C at the exit from the nozzle assembly, it goes almost completely in the solid state during the relaxation. Also in this case, the loss by evaporation of the carbon dioxide is thus low and much lower than in conventional dry ice production equipment.
  • Passing through the first heat exchanger is between minus 40 ° C and minus 56 ° C.
  • a device for carrying out the method according to the invention, in particular a device is suitable, which with a to a tank for liquid carbon dioxide
  • Carbon dioxide line arranged first cooling device, and is equipped with a connected to the carbon dioxide line nozzle assembly, wherein the nozzle assembly is operatively connected to a second cooling device.
  • the cooling device may be a conventionally operating chiller, e.g. a compression chiller, or one
  • Heat exchanger act in which a heat exchange with a cryogenic medium, for example, liquid nitrogen takes place.
  • the carbon dioxide line is a device for
  • pressure increase which increases the pressure of the liquid carbon dioxide to a value of 20 bar to 100 bar.
  • the pressure of the carbon dioxide on the exiting dry ice is so high that any ice formation during short-term treatment breaks displaced and so icing of the device is reliably avoided.
  • the nozzle arrangement preferably comprises a die provided with passages for the liquid carbon dioxide and made of a good heat-conducting material.
  • a die here is understood any component that exerts a shaping effect on the freezing carbon dioxide.
  • the die may be a pinhole of 0.1 cm to 20 cm in thickness, or an elongate nozzle body of 20 to 50 cm in length, in which one or more passage openings or longitudinal bores for the carbon dioxide are provided. The diameters of the passage openings or
  • Fig. 1 shows schematically a device according to the invention.
  • the device 1 comprises a pressure-resistant carbon dioxide line 2, which is connected to a tank 3 for liquid carbon dioxide, such as a low-pressure tank system.
  • a valve 4 allows the fluidic separation of the tank 3 from the carbon dioxide line 2. Downstream of the valve 4, the carbon dioxide line 2 passes through a refrigeration device, in the embodiment, a heat exchanger 5, in which guided through the carbon dioxide line 2
  • Carbon dioxide in indirect heat exchange with a coolant such as liquid nitrogen or technical refrigerants such as propane or butane, passes.
  • the refrigeration device may alternatively also be a conventional refrigeration machine of the compression-adsorption or absorption type.
  • the carbon dioxide line 2 opens into a nozzle arrangement 6.
  • the nozzle assembly 6 comprises a structural body 7 of thermally highly conductive material, such as copper, through which a plurality of holes 8 are passed.
  • the holes 8 are one
  • the structure 7 may be, for example, a pinhole, with a thickness of, for example, 0.1 cm to 20 cm or a massive heat sink of length 20 cm to 50 cm, in or in a variety of holes 8 for the liquid carbon dioxide are introduced.
  • the structure 7 of the nozzle assembly 6 is above a
  • Cooling device 10 in thermal communication with a cooling medium, which may be the same or a different cooling medium than that used in the heat exchanger 5.
  • the structure 7 of the nozzle assembly 6 is thus cooled and can absorb more heat from the flowing through the holes 8 liquid carbon dioxide.
  • a pressure increasing device 1 1 In the carbon dioxide line 2 may optionally be provided a pressure increasing device 1 1, which further increases the pressure of the liquid carbon dioxide in the line 2. During operation of the device 1 liquid carbon dioxide flows over the
  • Carbon dioxide line 2 to the nozzle assembly 6.
  • the pressure of the carbon dioxide is further increased, the carbon dioxide remains in the liquid state.
  • the liquid carbon dioxide at a temperature near the freezing point at
  • Nozzle arrangement 6 a further cooling to minus 80 ° C or below.
  • the carbon-solidified carbon dioxide particles emerging at the nozzle outlet have a considerably higher strength than C0 2 -snow particles, which were produced merely by expansion of liquid carbon dioxide, the usual
  • Tank conditions between 20 ° C to minus 35 ° C and not further cooled.
  • liquid carbon dioxide is brought at a pressure between 1 bar and 100 bar in the heat exchanger 5 to a temperature of about minus 40 ° C to minus 50 ° C and fed to the nozzle assembly 6, in which a further cooling to a temperature of approx minus 50 ° C to minus 56 ° C he follows.
  • the carbon dioxide leaves the nozzle arrangement still in the liquid state, passes almost completely into solid carbon dioxide snow during the expansion at the nozzle opening 9.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

L'invention concerne un procédé de production de particules de dioxyde de carbone solides, consistant à mettre un dioxyde de carbone liquide en contact thermique avec un réfrigérant dans un échangeur thermique et à le refroidir à une température juste supérieure à sa température de solidification. Le dioxyde de carbone liquide refroidi est ensuite acheminé dans un dispositif de filière refroidi par contact avec un réfrigérant, dans lequel il est davantage refroidi par contact thermique avec le dispositif de filière, avant de s'en échapper par une ouverture. Les particules de dioxyde de carbone ainsi produites et solidifiées par le froid présentent une plus grande résistance que les particules de CO2 obtenues par un procédé classique.
EP10749872A 2009-09-08 2010-09-07 Procédé et dispositif de production de particules de dioxyde de carbone solides Ceased EP2475616A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009040498A DE102009040498A1 (de) 2009-09-08 2009-09-08 Verfahren und Vorrichtung zum Herstellen fester Kohlendioxid-Partikel
PCT/EP2010/063126 WO2011029825A2 (fr) 2009-09-08 2010-09-07 Procédé et dispositif de production de particules de dioxyde de carbone solides

Publications (1)

Publication Number Publication Date
EP2475616A2 true EP2475616A2 (fr) 2012-07-18

Family

ID=43127042

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10749872A Ceased EP2475616A2 (fr) 2009-09-08 2010-09-07 Procédé et dispositif de production de particules de dioxyde de carbone solides

Country Status (3)

Country Link
EP (1) EP2475616A2 (fr)
DE (1) DE102009040498A1 (fr)
WO (1) WO2011029825A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2748710C1 (ru) * 2020-03-11 2021-05-31 федеральное государственное бюджетное образовательное учреждение высшего образования "Кемеровский государственный университет" (КемГУ) Аппарат для производства твердого диоксида углерода

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1659435A (en) * 1926-12-07 1928-02-14 Dryice Corp Method of and apparatus for making carbon-dioxide snow
US2138758A (en) 1935-06-15 1938-11-29 Texas Co Manufacture of carbon dioxide ice
NL140490B (nl) 1970-04-21 1973-12-17 Laszlo Vahl Prof Dr Ing Werkwijze voor het bereiden van vast kooldioxyde, inrichting voor het uitvoeren van die werkwijze en door toepassing van de werkwijze verkregen vast kooldioxyde.
WO1990009347A2 (fr) * 1989-02-08 1990-08-23 Cold Jet, Inc. Ajutage d'injection a changement de phase
US5514024A (en) * 1993-11-08 1996-05-07 Ford Motor Company Nozzle for enhanced mixing in CO2 cleaning system
GB9400838D0 (en) 1994-01-18 1994-03-16 Mg Gas Products Ltd Production of solid carbon dioxide
US6173916B1 (en) * 1994-12-15 2001-01-16 Eco-Snow Systems, Inc. CO2jet spray nozzles with multiple orifices
DE10160902A1 (de) * 2001-12-12 2003-07-03 Messer Griesheim Gmbh Reinigen von Objekten mit Flüssiggas
DE102004011194A1 (de) * 2004-03-04 2005-09-22 Messer Austria Gmbh Verfahren und Vorrichtung zur Erzeugung fester Kohlendioxidpartikel
US7140954B2 (en) * 2004-10-21 2006-11-28 S. A Robotics High pressure cleaning and decontamination system
DE102004053239A1 (de) * 2004-10-29 2006-05-04 Technische Universität Dresden Verfahren und Vorrichtung zur Erzeugung von festen Partikeln aus Flüssigkeiten, insbesondere aus flüssigem Kohlendioxid
DE102005005638B3 (de) * 2005-02-05 2006-02-09 Cryosnow Gmbh Verfahren und Vorrichtung zum Reinigen, Aktivieren oder Vorbehandeln von Werkstücken mittels Kohlendioxidschnee-Strahlen
DE102005054246C5 (de) * 2005-11-15 2011-08-18 MESSER Group GmbH, 65843 Vorrichtung und Verfahren zum Bestrahlen einer Oberfläche mit Trockeneis-Teilchen
DE102007052390B4 (de) * 2007-10-31 2021-01-28 Air Liquide Deutschland Gmbh Verfahren und Vorrichtung zur Reinigung von Oberflächen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011029825A2 *

Also Published As

Publication number Publication date
DE102009040498A1 (de) 2011-03-10
WO2011029825A2 (fr) 2011-03-17
WO2011029825A3 (fr) 2011-07-14

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