EP0149574A2 - Verfahren zum Verdünnen eines Gases oder einer Gasmischung in Luft von deren Abführung zur Atmosphäre - Google Patents

Verfahren zum Verdünnen eines Gases oder einer Gasmischung in Luft von deren Abführung zur Atmosphäre Download PDF

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Publication number
EP0149574A2
EP0149574A2 EP85400050A EP85400050A EP0149574A2 EP 0149574 A2 EP0149574 A2 EP 0149574A2 EP 85400050 A EP85400050 A EP 85400050A EP 85400050 A EP85400050 A EP 85400050A EP 0149574 A2 EP0149574 A2 EP 0149574A2
Authority
EP
European Patent Office
Prior art keywords
gas
injection means
atmosphere
upstream
venturi
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
EP85400050A
Other languages
English (en)
French (fr)
Other versions
EP0149574A3 (en
EP0149574B1 (de
Inventor
Michel Georges Toussaint
Michel Siard
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.)
Total Marketing Services SA
Original Assignee
Compagnie Francaise de Raffinage SA
Compagnie de Raffinage et de Distribution Total France SA
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 Compagnie Francaise de Raffinage SA, Compagnie de Raffinage et de Distribution Total France SA filed Critical Compagnie Francaise de Raffinage SA
Priority to AT85400050T priority Critical patent/ATE30518T1/de
Publication of EP0149574A2 publication Critical patent/EP0149574A2/de
Publication of EP0149574A3 publication Critical patent/EP0149574A3/fr
Application granted granted Critical
Publication of EP0149574B1 publication Critical patent/EP0149574B1/de
Expired 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
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/311—Injector mixers in conduits or tubes through which the main component flows for mixing more than two components; Devices specially adapted for generating foam

Definitions

  • the present invention relates to the dilution in air of a gas or a gaseous mixture, before its rejection to the atmosphere.
  • the present invention aims to propose for this purpose a method which is easy to implement, even when the quantities of gas to be discharged are significant. It also aims to propose a method, the implementation of which requires a simple device and easy maintenance during use.
  • the subject of the invention is a process for the dilution in air of a gas or of a gaseous mixture, before its rejection into the atmosphere, using a device comprising a body. profile forming a venturi, open to the atmosphere at its two ends and at the upstream end of which said gas or gas mixture is introduced under pressure using an injection means, this process being characterized in that said gas or gas mixture is injected into said body in the form of a sheet with an annular cross section.
  • said gas or gaseous mixture will be injected into said body using a plurality of injection means offset from upstream to downstream and such that the successive layers of said second gas produced by said means have increasing cross sections d 'upstream downstream.
  • said venturi body and said injection means will have a symmetry of revolution about the same axis.
  • Said injection means may consist of an injector with an annular orifice.
  • It may also include a bundle of injectors whose circular orifices are arranged in a ring at the upstream end of the body bed forming a venturi.
  • the devices which can be used for implementing the method according to the invention are of a general type known per se (see, for example, FR-A- 1 451 539 or FR-A- 1 491 215).
  • FR-A- 1 451 539 or FR-A- 1 491 215 devices for the mixture of two gases and their application to the mixture of air and a combustible gas for the supply of burners or nozzles have been abundantly described in the literature, the application of such Devices for diluting a gas in air, before it is released to the atmosphere, is neither known nor suggested by the prior art.
  • a plurality of devices when the gas or the quantities of gas to be diluted in air before they are released to the atmosphere are very large, a plurality of devices will preferably be used, the venturi bodies of which will be open at their two ends and which will be arranged in parallel inside a tubular structure communicating at its two ends with the atmosphere.
  • an additional mixing effect will be obtained inside said tubular structure.
  • this structure will preferably form a venturi and said devices will preferably be arranged at its upstream part.
  • This combination of a plurality of similar devices also has the advantage that it is possible to dismantle one of the devices for maintenance operations without immobilizing the entire apparatus.
  • additional air inlets can be provided laterally in the downstream part of said venturi body, in order to increase the gas dilution effect.
  • the dilution in the air before rejection to the atmosphere must be such that one is outside the flammability limits for its constituents, in particular for hydrogen and methane, which is most commonly found in residual gases released to the atmosphere.
  • the divergent 3 opens into the atmosphere, either directly, or by means of non-represented auxiliary members.
  • the gas to be diluted before discharge to the atmosphere is supplied by an annular section nozzle 6, coaxial with the air inlet chamber 1 and provided with an annular section injector.
  • the nozzle 6 is pierced along its axis with a conduit 8, open at its two ends and which communicates with the atmosphere through its downstream end.
  • This duct 8 forms a second air inlet, which is added to that defined by the external walls of the nozzle 6 and the internal walls of the chamber 1.
  • the dilution in the air is carried out by entrainment of the air by the gas to be diluted, which acts as a driving agent, this gas being injected under pressure, in the form of a cylindrical or conical sheet, in contact with the air both by its external part and its internal part, diffusion and mixing with the air occurring very quickly, with a minimum pressure drop in contact with the walls.
  • the divergent 3 will be pierced laterally with orifices 4, near its downstream end, in order to increase the rate of dilution of the gas in the air.
  • FIG. 2 illustrates a preferred embodiment of the invention, in which the gas to be diluted in the air is injected at the downstream end of a body 10 forming a venturi by three successive nozzles with annular injectors offset from upstream to downstream, respectively 11, 12 and 13, and of increasing section from upstream to downstream.
  • each nozzle will open into the upstream part, open to the atmosphere, of the next nozzle. This will give a considerably increased dilution and air entrainment effect.
  • the injection pressures at each injector may be different and even zero, each pressure being chosen so as to obtain the optimum effect of dilution in air for the injector considered .
  • the invention is not limited to the use of injection nozzles with an annular orifice and any equivalent means can naturally be used.
  • FIG. 3 9 can be used to inject the gas to be diluted in the venturi body 20, a plurality of tubes 21 carried by a plate 22 and supplied by a manifold 23, the discharge orifices 24 being arranged in the upstream part of the body 20 so as to form a crown there.
  • preferably several successive injection means will be used, offset from upstream to downstream and capable of forming the gas sheets of increasing cross section from upstream to downstream.
  • the tubes 25 arranged upstream and carried by the plate 26, will be supplied with gas by the manifold 27 and will preferably open at the downstream end, open to the atmosphere, of a venturi 28, while the downstream tubes 21 will be arranged substantially in the extension of the downstream part of the venturi 27.
  • the side walls of the downstream part of this venturi may advantageously be pierced with additional air inlets 29.
  • a plurality of devices according to the invention arranged in parallel inside a tubular structure forming a venturi 30, open to the atmosphere.
  • Each device will comprise a body 31 forming a venturi, open at its two ends, and at least one injector 32 disposed at the upstream end of said body in order to inject the gas to be diluted therein in the form of a ply with annular section.
  • the supports of the devices and the gas supply means of the injectors 31 have not been shown in the drawing.
  • the invention therefore provides a simple and easy-to-use method and device for producing and diluting in the ambient air a gas or a mixture of gases before they are released to the atmosphere.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Sampling And Sample Adjustment (AREA)
EP85400050A 1984-01-13 1985-01-11 Verfahren zum Verdünnen eines Gases oder einer Gasmischung in Luft von deren Abführung zur Atmosphäre Expired EP0149574B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85400050T ATE30518T1 (de) 1984-01-13 1985-01-11 Verfahren zum verduennen eines gases oder einer gasmischung in luft von deren abfuehrung zur atmosphaere.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8400525A FR2558071A1 (fr) 1984-01-13 1984-01-13 Procede et dispositif pour le melange d'au moins deux gaz et application a la dilution dans l'air d'un gaz avant son rejet a l'atmosphere
FR8400525 1984-01-13

Publications (3)

Publication Number Publication Date
EP0149574A2 true EP0149574A2 (de) 1985-07-24
EP0149574A3 EP0149574A3 (en) 1985-09-11
EP0149574B1 EP0149574B1 (de) 1987-11-04

Family

ID=9300111

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85400050A Expired EP0149574B1 (de) 1984-01-13 1985-01-11 Verfahren zum Verdünnen eines Gases oder einer Gasmischung in Luft von deren Abführung zur Atmosphäre

Country Status (5)

Country Link
EP (1) EP0149574B1 (de)
AT (1) ATE30518T1 (de)
DE (1) DE3560859D1 (de)
FR (1) FR2558071A1 (de)
NO (1) NO850110L (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000074831A1 (en) * 1999-06-09 2000-12-14 Aeroflo (Proprietary) Limited Method and device for mixing gases
CN108518682A (zh) * 2018-05-04 2018-09-11 中国石油集团川庆钻探工程技术有限公司钻采工程技术研究院 降低噪音的文丘里管及燃烧器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3014505A1 (fr) 2013-12-06 2015-06-12 Acri In Dispositif d'optimisation de la valorisation de la quantite de mouvement d'un jet fluide pour la propulsion ou l'entrainement du fluide recepteur ou le melange des deux fluides
US20150174360A1 (en) * 2013-12-23 2015-06-25 12th Man Technologies, Inc. Device for Discharging Toxic Gases
DE102017217248A1 (de) * 2017-09-27 2019-03-28 Robert Bosch Gmbh Brennstoff-Luft-Mischeinrichtung und ein Heizgerät

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1451539A (fr) * 1965-07-22 1966-01-07 Bertin & Cie Perfectionnements aux appareils comportant un ajutage en forme de fente mince, pour fluide gazeux
GB1024870A (en) * 1962-12-17 1966-04-06 Abbott Lab Device for circulating and turbulently intermixing a fluid with a liquid
FR1491215A (fr) * 1965-09-21 1967-08-11 Bertin & Cie Perfectionnements aux éjecteurs-mélangerus ou trompes
US4149453A (en) * 1977-04-19 1979-04-17 John Zink Company No-plume device
GB1582898A (en) * 1977-07-25 1981-01-14 Kamelmacher E Jet pump or mixer and jet means therefor
FR2530317A1 (fr) * 1982-07-15 1984-01-20 Raffinage Cie Francaise Procede et dispositif pour la combustion de gaz combustibles avec induction d'air atmospherique

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1024870A (en) * 1962-12-17 1966-04-06 Abbott Lab Device for circulating and turbulently intermixing a fluid with a liquid
FR1451539A (fr) * 1965-07-22 1966-01-07 Bertin & Cie Perfectionnements aux appareils comportant un ajutage en forme de fente mince, pour fluide gazeux
FR1491215A (fr) * 1965-09-21 1967-08-11 Bertin & Cie Perfectionnements aux éjecteurs-mélangerus ou trompes
US4149453A (en) * 1977-04-19 1979-04-17 John Zink Company No-plume device
GB1582898A (en) * 1977-07-25 1981-01-14 Kamelmacher E Jet pump or mixer and jet means therefor
FR2530317A1 (fr) * 1982-07-15 1984-01-20 Raffinage Cie Francaise Procede et dispositif pour la combustion de gaz combustibles avec induction d'air atmospherique
EP0099828A2 (de) * 1982-07-15 1984-02-01 Compagnie De Raffinage Et De Distribution Total France Vorrichtung zur Verbrennung von brennbaren Fluiden mit Luftinduktion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000074831A1 (en) * 1999-06-09 2000-12-14 Aeroflo (Proprietary) Limited Method and device for mixing gases
CN108518682A (zh) * 2018-05-04 2018-09-11 中国石油集团川庆钻探工程技术有限公司钻采工程技术研究院 降低噪音的文丘里管及燃烧器

Also Published As

Publication number Publication date
ATE30518T1 (de) 1987-11-15
DE3560859D1 (en) 1987-12-10
NO850110L (no) 1985-07-15
FR2558071A1 (fr) 1985-07-19
EP0149574A3 (en) 1985-09-11
EP0149574B1 (de) 1987-11-04

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