FR2580953A2 - Method and device for setting in contact at least two gaseous components, in particular reacting at high temperature, in a space limited by walls - Google Patents

Method and device for setting in contact at least two gaseous components, in particular reacting at high temperature, in a space limited by walls Download PDF

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Publication number
FR2580953A2
FR2580953A2 FR8506218A FR8506218A FR2580953A2 FR 2580953 A2 FR2580953 A2 FR 2580953A2 FR 8506218 A FR8506218 A FR 8506218A FR 8506218 A FR8506218 A FR 8506218A FR 2580953 A2 FR2580953 A2 FR 2580953A2
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Prior art keywords
gas
walls
mixture
temperature
flow
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French (fr)
Inventor
Francois Prudhon
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Rhone Poulenc Chimie de Base SA
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Rhone Poulenc Chimie de Base SA
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Priority to FR8506218A priority Critical patent/FR2580953A2/en
Priority to DE8585401377T priority patent/DE3565476D1/en
Priority to AT85401377T priority patent/ATE37805T1/en
Priority to EP85401377A priority patent/EP0171316B1/en
Priority to CA000486493A priority patent/CA1293851C/en
Priority to JP60152148A priority patent/JPH0777608B2/en
Priority to AU44746/85A priority patent/AU585239B2/en
Publication of FR2580953A2 publication Critical patent/FR2580953A2/en
Priority to US07/296,926 priority patent/US4910008A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J12/00—Chemical processes in general for reacting gaseous media with gaseous media; Apparatus specially adapted therefor
    • B01J12/005—Chemical processes in general for reacting gaseous media with gaseous media; Apparatus specially adapted therefor carried out at high temperatures, e.g. by pyrolysis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/2405—Stationary reactors without moving elements inside provoking a turbulent flow of the reactants, such as in cyclones, or having a high Reynolds-number
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/26—Nozzle-type reactors, i.e. the distribution of the initial reactants within the reactor is effected by their introduction or injection through nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J4/00—Feed or outlet devices; Feed or outlet control devices
    • B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B7/00—Halogens; Halogen acids
    • C01B7/01—Chlorine; Hydrogen chloride
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B7/00—Halogens; Halogen acids
    • C01B7/01—Chlorine; Hydrogen chloride
    • C01B7/012—Preparation of hydrogen chloride from the elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F23D14/24—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other at least one of the fluids being submitted to a swirling motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
    • B01J2219/00081—Tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/00094—Jackets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/00099—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor the reactor being immersed in the heat exchange medium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00164—Controlling or regulating processes controlling the flow

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

The present invention relates to a method and a device for setting at least two compounds in gaseous form in contact. The device for implementing the method according to the invention comprises: - a part 1 in which at least two groups of gas intakes coming from two supply manifolds 3 and 4 are made; - a chamber 2 in which the gas intakes emerge; - groups of gas-injection orifices being arranged in accordance in repetitive patterns 5, 6 for elemental mixing, And is characterised in that it has means for regulating the temperature of the walls using a fluid which is heat-regulated to a sufficiently low value to avoid decomposition and/or reaction of the hydrocarbons contained in the mixture.

Description

PROCEDE ET DISPOSITIF POUR LA MISE EN CONTACT D'AU MOINS
DEUX COMPOSES GAZEUX, REAGISSANT NOTAtEENT A HAUTE
TEMPERATURE, DANS UN ESPACE LIMITE PAR DES PAROIS
La présente invention a trait à un procédé pour la mise en contact d'au moins deux composés gazeux, notamment à haute température, dans un espace limité par des parois. E3le a également trait à un dispositif pour sa mise en oeuvre.METHOD AND DEVICE FOR CONTACTING AT LEAST ONE
TWO GASEOUS COMPOUNDS, NOTABLY REACTING AT HIGH
TEMPERATURE, IN A SPACE LIMITED BY WALLS
The present invention relates to a method for bringing at least two gaseous compounds into contact, in particular at high temperature, in a space limited by walls. E3le also relates to a device for its implementation.

Dans la demande principale n0 84 11002 déposée le 11 Juillet 1984, on a revendiqué un procédé de mise en contact d'au moins deux composés sous forme gazeuse, selon lequel on injecte deux flux gazeux distincts dans une zone de mélange où, en prédivisant chaque flux, on forme des motifs répétitifs de mélanges élémentaires à partir desdits flux prédivisés. In main application No. 84 11002 filed on July 11, 1984, a process was claimed for bringing at least two compounds into gaseous form, according to which two distinct gas streams are injected into a mixing zone where, by predivising each flows, repetitive patterns of elementary mixtures are formed from said predivivated flows.

Selon l'invention décrite dans la demande principale, il est en particulier possible d'atteindre rapidement des températures de mise en contact et de réaction très élevées dans les meilleures conditions de sécurité et d'obtenir des sélectivités particulières. According to the invention described in the main application, it is in particular possible to quickly reach very high contacting and reaction temperatures under the best safety conditions and to obtain specific selectivities.

On peut ainsi obtenir une miniaturisation de l'appareillage avec des effets de parois diminués. It is thus possible to obtain a miniaturization of the apparatus with reduced wall effects.

Cependant, dans le cas, par exemple, du traitement de composés gazeux renfermant des hydrocarbures, il arrive que l'on observe des dépôts de carbone sur les parois. However, in the case, for example, of the treatment of gaseous compounds containing hydrocarbons, sometimes carbon deposits are observed on the walls.

En effet, la combustion d'un hydrocarbure à l'état gazeux dans un comburant donné, conduit à des produits de réaction uniquement gazeux (en général H2, H20, CO et C02) si plusieurs conditions sont réunies
1) le mélange initial entre comburant et combustible doit etre
rapide, homogène et conduire à une température de fin de
mélange (avant ou pendant le début des réactions) telle que
l'inflammation du mélange et l'entretien desdites réactions
soient possibles (préchauffage nécessaire dans certaines
conditions), et que les réactions de décomposition polyp
hasiques du type CH4 -- > C + 2H2 soient immédiatement suivies
de réactions ultérieures de combustion complémentaire ou de réduction, à des vitesses relatives nettement plus grandes

Figure img00020001
Indeed, the combustion of a hydrocarbon in the gaseous state in a given oxidizer, leads to only gaseous reaction products (in general H2, H20, CO and C02) if several conditions are met
1) the initial mixture between oxidizer and fuel must be
fast, homogeneous and lead to an end temperature of
mixture (before or during the start of the reactions) such as
inflammation of the mixture and maintenance of said reactions
are possible (preheating required in some
conditions), and that polyp decomposition reactions
hasics of type CH4 -> C + 2H2 are immediately followed
subsequent complementary combustion or reduction reactions at significantly higher relative speeds
Figure img00020001

2) la quantité de comburant doit être suffisante pour permettre
l'achèvement complet desdites réactions, sans donc laisser de
trace du produit solide transitoirer.e.t formé (carbone de
décomposition thermique en particulier).2) the quantity of oxidizer must be sufficient to allow
the complete completion of said reactions, without therefore leaving any
trace of the solid product transient. and formed (carbon of
thermal decomposition in particular).

Ces conditions sont nécessaires. Elles suffisent es phase gaz si le mélange est assez rapide et bien réalisé (en particulier dans un dispositif tel que décrit dans la demande principale). Par contre, le volume dans lequel s'effectuent ces réactions est évidemment limité par des parois. Si le dispositif d'ensemble est prévu pour un fonctionnment très chaud, donc à grandes vitesses de réactions, le "parcours libre initial" des molécules (entre leur injection à travers la zone de mélange, jusqu'à leur première rencontre avec une paroi) est volontairement court (effet recherché de confinement des jets et diminution des effets de parois).Si, au terme de ce parcours, il existe encore des molécules de carburant dans leur état initial (simpiement en cours d'échauffement), elles peuvent se trouver temporairement faire partie du gaz de couche limite laminaire qui recouvre la paroi, lieu où les mélanges ne se produisent plus pratiquement que par diffusion, où la composante de la turbulence perpendiculaire à la paroi est quasi-nulle et ou les gaz, et en particulier le carburant, se trouvent donc rapidement portés, essentiellement par conduction, à une température voisine de celle de ladite paroi, avec localement une très faible probabilité de rencontrer des molécules de comburant. These conditions are necessary. They are sufficient in the gas phase if the mixing is fast enough and well done (in particular in a device as described in the main application). On the other hand, the volume in which these reactions take place is obviously limited by walls. If the overall device is intended for very hot operation, therefore at high reaction speeds, the "initial free path" of the molecules (between their injection through the mixing zone, until their first encounter with a wall) is deliberately short (desired effect of confinement of the jets and reduction of the wall effects). If, at the end of this journey, there are still fuel molecules in their initial state (simply during heating), they may be found temporarily be part of the laminar boundary layer gas which covers the wall, place where the mixtures only occur practically by diffusion, where the component of the turbulence perpendicular to the wall is almost zero and or the gases, and in particular the fuel, are therefore quickly brought, essentially by conduction, to a temperature close to that of said wall, with locally a very low probability of encountering molecules of comburan t.

Dans ce cas, si la paroi est à une température qui dépasse celle de décomposition thermique de l'hydrocarbure, ce dernier, n'ayant ainsi que très peu de chance localement de rencontrer du comburant, va se décomposer en carbone et hydrogène par exemple, la partie solide (le carbone) de ces composés se trouvant alors soumise 2 une dynamique différente de celle des composés gazeux (accélérations, forces électrostatiques et finalement dépôt solide passible à la paroi).  In this case, if the wall is at a temperature which exceeds that of thermal decomposition of the hydrocarbon, the latter, thus having only very little chance locally of encountering oxidizer, will decompose into carbon and hydrogen for example, the solid part (carbon) of these compounds then being subjected to a dynamic different from that of the gaseous compounds (accelerations, electrostatic forces and finally solid deposit liable to the wall).

Or, on a trouvé, et c'est ce qui fait l'objet de l'invention de la présente addition, qu'il pouvait être remédié de manière simple à cet inconvénient, en maintenant les parois qui délimitent la zone de mélange à une température suffisamment basse pour éviter pratiquement la décomposition locale des produits de la réaction tels que les hydrocarbures. However, it has been found, and this is what is the subject of the invention of the present addition, that this disadvantage could be remedied in a simple manner, by maintaining the walls which delimit the mixing zone at a sufficiently low temperature to practically avoid local decomposition of the reaction products such as hydrocarbons.

Le procédé de l'invention consiste donc en une mise en contact d'au moins deux composés sous forme gazeuse, selon lequel on injecte au moins deux flux gazeux distincts dans une zone de mélange où, en prédivisant chaque flux, on forme des motifs répétitifs de mélanges élémentaires à partir desdits flux prédivisés et se caractérise par le fait que l'un au moins des flux gazeux comprend au moins un hydrocarbure et que le mélange est porté à une température provoquant la dissociation des hydrocarbures et leur éventuelle réaction avec d'autres composés dans un espace restreint limité par des parois latérales, la température desdites parois étant maintenue à une valeur suffisamment basse pour éviter la décomposition locale des produits en présence dans ce mélange. The process of the invention therefore consists in bringing at least two compounds into gaseous form, according to which at least two separate gas flows are injected into a mixing zone where, by predivising each flow, repeating patterns are formed of elementary mixtures from said predivivized flows and is characterized in that at least one of the gas flows comprises at least one hydrocarbon and that the mixture is brought to a temperature causing the dissociation of the hydrocarbons and their possible reaction with other compounds in a limited space limited by side walls, the temperature of said walls being kept at a sufficiently low value to avoid local decomposition of the products present in this mixture.

On pense que la molécule d'hydrocarbure en cours de chauffage, qui n'a pas encore rencontré de comburant avant d'approcher la paroi, si elle se trouve momentanément prise dans la couche limite laminaire décrite ci-dessus, voit sa température, par les mêmes effets de conduction que cités précédemment, redevenir proche de celle de ladite paroi, donc inférieure à celle de la décomposition dudit hydrocarbure.En l'absence locale de comburant, la paroi froide "neutralise" donc la tendance à l'évolution vers des processus de décomposition (en particulier en C solide), évolution qui réapparaîtra ultérieurement quand la molécule d'hydrocarbure quittera la couche limite froide protectrice pour se réinjecter dans le mélange chaud, l'émission de carbone se faisant alors en atmosphère chaude d'oxygène (combustion) ou de CO, et/ou H20 (réduction en CO et 112). Le procédé selon l'invention cumule donc les avantages d'une paroi froide (y compris sa tenue en présence de gaz chauds) et d'une réaction à haute température. It is believed that the hydrocarbon molecule being heated, which has not yet encountered any oxidizer before approaching the wall, if it is temporarily caught in the laminar boundary layer described above, sees its temperature, by the same conduction effects as mentioned above, once again becoming close to that of the said wall, therefore less than that of the decomposition of the said hydrocarbon. In the local absence of oxidizer, the cold wall therefore "neutralizes" the tendency towards evolution towards decomposition process (especially in solid C), an evolution which will reappear later when the hydrocarbon molecule leaves the protective cold boundary layer to be reinjected into the hot mixture, the emission of carbon then taking place in a hot oxygen atmosphere ( combustion) or CO, and / or H20 (reduction in CO and 112). The method according to the invention therefore combines the advantages of a cold wall (including its resistance in the presence of hot gases) and of a reaction at high temperature.

Pratiquement, selon ltenseignement de la demande principale, on forme un ensemble homogène de mélanges élémentaires homogènes avant le début de la réaction qui est d'autant plus rapide qu'elle 2 lieu entre gaz. Les mélanges élémentaires homogènes doivent donc être réalisés dans un délai d'autant plus court que cette réaction est ra de.  In practice, according to the teachings of the main request, a homogeneous set of homogeneous elementary mixtures is formed before the start of the reaction which is all the faster as it takes place between gases. Homogeneous elementary mixtures must therefore be produced in a shorter time as this reaction is ra.

Les gaz étant disponibles à une pression donnée, donc à une vesse d'injection définie, les mélanges élémentaires sont d'au #.-t plus rapides qu'ils sont réalisés à faible echelle. The gases being available at a given pressure, therefore at a defined injection velocity, the elementary mixtures are at least faster than they are produced at low scale.

a portée d'un jet à l'issue d'un orifice étant proportionnelle au diamètre dudit orifice et indépendante du débit, les motifs ré?ét t-.;s générateurs des mélanges élémentaires seront donc avantageusement constitués d'orifices rapprochés de petites dimen s srs.  within range of a jet at the end of an orifice being proportional to the diameter of said orifice and independent of the flow rate, the repeated patterns are generators of elementary mixtures will therefore advantageously consist of orifices close to small dimen s srs.

De manière simple, on prédivise chaque flux de gaz en formant des rotifs répétitifs d'injection tels que couples d'orifices '#cisins.  In a simple manner, each flow of gas is predivected by forming repetitive injection rotators such as pairs of orifices #cisins.

Ces motifs, qui sont répétitifs d'un point de vue géométrique, dcivent l'être aussi d'un point de vue hydrodynamlque, en assurant l'écuirépartition des débits. Cet effet est obtenu en imposant à la vitesse d'érection Ve d'un gaz à travers les orifices qui lui sont attribués dans lesdits motifs répétitifs une valeur éga ] e à au moins 3 fois de préférence 6 fois la valeur de la vitesse de distribution V@ en amont desdits orifices, dans le cas de l'air dans des conditions normales de température et de pression. These patterns, which are repetitive from a geometrical point of view, must also be repetitive from a hydrodynamic point of view, ensuring the distribution of flow rates. This effect is obtained by imposing on the speed of erection Ve of a gas through the orifices which are assigned to it in said repeating patterns a value equal to at least 3 times preferably 6 times the value of the dispensing speed V @ upstream of said orifices, in the case of air under normal temperature and pressure conditions.

On obtient ainsi un ensemble homogène de mélanges élémentaires homogènes dans un état de mélange comparable à celui observé à l'issue de la zone de pulvérisation à effet retard dans le cas des mélanges gaz-liquide. A homogeneous set of homogeneous elementary mixtures is thus obtained in a state of mixing comparable to that observed at the end of the spraying zone with a delayed effect in the case of gas-liquid mixtures.

On impartit avantageusement à l'un au moins de ces flux un mouvement tourbillon symétrique avec un débit suffisant pour provoquer un effet d'entraînement de l'autre flux gazeux (ou des autres flux gazeux). Advantageously, at least one of these flows is imparted a symmetrical vortex movement with a flow rate sufficient to cause a ripple effect of the other gas flow (or of the other gas flows).

Puis, on prévoit en aval un espace restreint, zone de confinement de manière à provoquer la rotation dudit flux autour de l'axe de l'écoulement ultérieur, en assurant la fonction d'entraînement global. Then, a downstream space is provided, a confinement zone so as to cause the rotation of said flow around the axis of the subsequent flow, ensuring the overall drive function.

Cette manière d'opérer permet d'obtenir, à l'échelle de l'appareil, un mélange très rapide des mélanges élémentaires obtenus à l'échelle des motifs répétitifs d'injection, et un début de réaction sans omission ni répétition, d'où une densité de réactions très forte dans un volume total réduit au minimum.  This way of operating makes it possible to obtain, on the scale of the apparatus, a very rapid mixing of the elementary mixtures obtained on the scale of the repeating injection patterns, and a start of reaction without omission or repetition, of where a very high density of reactions in a total volume reduced to a minimum.

Elle permet une miniaturisation de l'appareillage avec des effets de parois diminués, autorisant ainsi une protection thernique efficace par refroidissement desdites parois sans effet notable sur la vempérature moyenne de la réaction. It allows a miniaturization of the apparatus with reduced wall effects, thus authorizing effective thernic protection by cooling of said walls without significant effect on the average temperature of the reaction.

I1 en résulte que lton peut atteindre rapidement des températures très élevées dans les meilleures conditions de sécurité et obtenir des sélectivités particulières. As a result, it can quickly reach very high temperatures under the best safety conditions and obtain specific selectivities.

L'invention concerne également un dispositif qui comprend
- une partie (1) dans laquelle sont ménagées au moins deux
familles d'amenées de gaz issues de deux collecteurs d'alimen
tation (3) et (4)
- une chambre (2) dans laquelle débouchent les amenées de gaz
(avantageusement les orifices d'injection).The invention also relates to a device which comprises
- a part (1) in which are formed at least two
gas supply families from two feed collectors
tation (3) and (4)
- a chamber (2) into which the gas pipes open
(advantageously the injection orifices).

- les familles d'orifices d'injection de gaz sont disposées
selon des motifs répétitifs (5), (6) de mélange élémentaire et se caractérise par le fait qu'il présente des moyens de régulation en température des parois par un fluide thermostaté à une valeur suffisamment basse pour éviter la décomposition et/ou la réaction des hydrocabures contenus dans le mélange.- the families of gas injection orifices are arranged
according to repeating patterns (5), (6) of elementary mixture and is characterized in that it has means for regulating the temperature of the walls by a fluid thermostatically controlled at a sufficiently low value to avoid decomposition and / or reaction hydrocarbons contained in the mixture.

Avantageusement, une au moins des injections par motif est orientée de sorte à impartir une composante tangentielle à la valeur d'injection du flux gazeux par rapport à l'axe principal d'écoulement ultérieur. Advantageously, at least one of the injections per pattern is oriented so as to impart a tangential component to the injection value of the gas flow relative to the main axis of subsequent flow.

De manière simple, le fluide thermostaté circule dans une double enveloppe, dont 1' entrée et la sortie sont représentées par les tubulures (7) et (8). In a simple manner, the thermostatically controlled fluid circulates in a double envelope, the inlet and outlet of which are represented by the pipes (7) and (8).

Bien évidemment, on peut remplacet cette double enveloppe par tout autre moyen équivalent de régulation de la température.  Obviously, this double envelope can be replaced by any other equivalent means of regulating the temperature.

Claims (3)

REVENDICATIONS 1) Procédé de mise en contact d'au moins deux composés sous forme1) Method for bringing at least two compounds into contact gazeuse, selon lequel on injecte au moins deux flux gazeux gas, according to which at least two gas streams are injected distincts dans une zone de mélange où, en prédivisant chaque distinct in a mixing zone where, by predicting each flux, on forme des motifs répétitifs de mélanges élémentaires à flow, repetitive patterns of elementary mixtures are formed at partir desdits flux prédivisés, caractérisé par le fait que l'un  from said predivivized flows, characterized in that one au moins des flux gazeux comprend au moins un hydrocarbure et at least one gas stream comprises at least one hydrocarbon and que le mélange est porté à une température provoquant la dis that the mixture is brought to a temperature causing the dis sociation des hydrocarbures et leur éventuelle réaction avec association of hydrocarbons and their possible reaction with d'autres composés dans un espace restreint limité par des parois other compounds in a limited space bounded by walls latérales, la température desdites parois étant maintenue à une lateral, the temperature of said walls being maintained at a valeur suffisamment basse pour éviter la décomposition locale value low enough to avoid local decomposition des produits en présence dans ce mélange. of the products present in this mixture. 2) Procédé selon la revendication 1, caractérisé par le fait que2) Method according to claim 1, characterized in that l'on impartit à l'un au moins de ces flux un mouvement tourbil at least one of these flows is imparted a vortex movement lon symétrique avec un débit suffisant pour provoquer un effet lon symmetrical with a sufficient flow to cause an effect d'entratnement de l'autre flux gazeux (ou des autres flux of the other gas stream (or other streams gazeux), puis on prévoit en aval une zone de confinement de gaseous), then a downstream containment zone of manière à provoquer la rotation dudit flux autour de l'axe de so as to cause the rotation of said flow around the axis of l'écoulement ultérieur, en assurant la fonction d'entranement  the subsequent flow, ensuring the drive function global. global. 3) Dispositif pour la mise en oeuvre du procédé selon l'une des 3) Device for implementing the method according to one of revendications 1 ou 2, qui comprend claims 1 or 2 which includes - une partie (1) dans laquelle sont ménagées au moins deux - a part (1) in which are formed at least two familles d'amenées de gaz issues de deux collecteurs d'ali gas supply families from two aluminum collectors mentation (3) et (4) mentions (3) and (4) - une chambre (2) dans laquelle débouchent les amenées de gaz - a chamber (2) into which the gas pipes open - les familles d'orifices d'injection de gaz étant disposées - the families of gas injection orifices being arranged selon des motifs répétitifs (5), (6) de mélange élémentaire et se caractérise par le fait qu'il présente des moyens de régula- ion en tetrpérature des parois par un fluide thermostaté à une saleur suffisamment basse pour éviter la décomposition et/ou la réaction des hydrocabures contenus dans le mélange  according to repeating patterns (5), (6) of elementary mixture and is characterized in that it has means for regulating the temperature of the walls by a fluid thermostatically controlled at a sufficiently low salt level to avoid decomposition and / or the reaction of the hydrocarbons contained in the mixture
FR8506218A 1984-07-11 1985-04-24 Method and device for setting in contact at least two gaseous components, in particular reacting at high temperature, in a space limited by walls Pending FR2580953A2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FR8506218A FR2580953A2 (en) 1985-04-24 1985-04-24 Method and device for setting in contact at least two gaseous components, in particular reacting at high temperature, in a space limited by walls
DE8585401377T DE3565476D1 (en) 1984-07-11 1985-07-08 Process and apparatus for contacting at least two gaseous components reacting at high temperatures
AT85401377T ATE37805T1 (en) 1984-07-11 1985-07-08 CONTACT METHOD AND APPARATUS FOR AT LEAST TWO GASEOUS COMPOUNDS REACTING WITH EACH OTHER AT HIGH TEMPERATURES.
EP85401377A EP0171316B1 (en) 1984-07-11 1985-07-08 Process and apparatus for contacting at least two gaseous components reacting at high temperatures
CA000486493A CA1293851C (en) 1984-07-11 1985-07-09 Process and apparatus for contacting at least two gaseous compounds which react in particular at high temperature
JP60152148A JPH0777608B2 (en) 1984-07-11 1985-07-10 Method and apparatus for contacting gas
AU44746/85A AU585239B2 (en) 1984-07-11 1985-07-10 Process and apparatus for contacting at least two gaseous compounds which react in particular at high temperature
US07/296,926 US4910008A (en) 1984-07-11 1989-01-11 Gas-gas phase contactor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8506218A FR2580953A2 (en) 1985-04-24 1985-04-24 Method and device for setting in contact at least two gaseous components, in particular reacting at high temperature, in a space limited by walls

Publications (1)

Publication Number Publication Date
FR2580953A2 true FR2580953A2 (en) 1986-10-31

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FR8506218A Pending FR2580953A2 (en) 1984-07-11 1985-04-24 Method and device for setting in contact at least two gaseous components, in particular reacting at high temperature, in a space limited by walls

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Country Link
FR (1) FR2580953A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4931012A (en) * 1986-01-02 1990-06-05 Rhone-Poulenc Chimie De Base Phase contactor/process for generating high temperature gaseous phase

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4931012A (en) * 1986-01-02 1990-06-05 Rhone-Poulenc Chimie De Base Phase contactor/process for generating high temperature gaseous phase

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