WO2019201533A1 - Procédé et dispositif pour accélérer une réaction chimique entre au moins deux réactifs dans un réacteur chimique - Google Patents

Procédé et dispositif pour accélérer une réaction chimique entre au moins deux réactifs dans un réacteur chimique Download PDF

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Publication number
WO2019201533A1
WO2019201533A1 PCT/EP2019/056815 EP2019056815W WO2019201533A1 WO 2019201533 A1 WO2019201533 A1 WO 2019201533A1 EP 2019056815 W EP2019056815 W EP 2019056815W WO 2019201533 A1 WO2019201533 A1 WO 2019201533A1
Authority
WO
WIPO (PCT)
Prior art keywords
reactor
reactant
nozzle
pressure
injected
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
PCT/EP2019/056815
Other languages
German (de)
English (en)
Inventor
Anja Veronica RATH
Bernd Stuke
Lars Olems
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2019201533A1 publication Critical patent/WO2019201533A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/02—Feed or outlet devices therefor
    • 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
    • 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
    • B01J19/18—Stationary reactors having moving elements inside
    • B01J19/1806—Stationary reactors having moving elements inside resulting in a turbulent flow of the reactants, such as in centrifugal-type reactors, 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
    • B01J19/24—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
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00796—Details of the reactor or of the particulate material
    • B01J2208/00893—Feeding means for the reactants
    • B01J2208/00902—Nozzle-type feeding elements
    • 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
    • B01J2219/00002—Chemical plants
    • B01J2219/00027—Process aspects
    • B01J2219/00036—Intermittent processes
    • 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
    • B01J2219/00002—Chemical plants
    • B01J2219/00027—Process aspects
    • B01J2219/00038—Processes in parallel
    • 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

Definitions

  • the invention relates to a method for accelerating a chemical reaction between at least two reactants in a chemical reactor and an on device for carrying out the method.
  • Reactors are used in the chemical industry to react with different reactants.
  • a stirred tank also known as a stirred tank.
  • chemical reactions are carried out in the liquid phase.
  • the reaction time can be very long.
  • the size of the Re actor as well as the required residence time of the reactants in the reactor play a role.
  • Stirring tanks are usually tanks made of steel, which are equipped with a stirrer and a heating jacket. Through baffles baffles protrude into the container. These prevent the contents of the container from rotating with the stirrer, so that a mixing of the reactants or reactants is achieved. In addition, further nozzles may be provided, which serve for the feed of the reactants and / or the introduction of measuring instruments. At the bottom of the container is usually a drain pipe, which is closed, for example, with a movable valve plate ge.
  • At least one reactant is pressurized and injected under high pressure into the chemical reactor.
  • a high-pressure injection valve is used with a nozzle and a cooperating with the nozzle hubbeweglich Dü sennadel.
  • Such high-pressure injection valves are known from fuel injection technology, so that this technique can be used.
  • the injection by means of such valves allows a defined droplet size and droplet distribution. Due to the injection under high pressure very small droplets of Reaktan th can be achieved, so that an increase in surface area takes place, which contributes to a acceleration of the desired Be chemical reaction in the reactor. For example, syntheses and / or oxidation reactions can be promoted in this way.
  • At least one further reactant may already be present in the reactor or even if it is injected under high pressure into the reactor.
  • the reactants may be liquid and / or gaseous substances.
  • injection also includes the introduction of gaseous substances, commonly referred to as "blowing in”.
  • the injection of at least one reactant under high pressure into the reactor represents a much more dynamic process than that known from the prior art Stirring. Mitels the high-pressure injection high impulse who introduced the who, which lead to a thorough mixing of the reactants in the reactor and thus to an acceleration of the chemical reaction.
  • the injection pressure is above 1,400 bar, more preferably above 1,600 bar, and more preferably above 2,000 bar.
  • the injection of a reactant by means of a high-pressure injection valve is carried out before preferably in a pulsed process.
  • a pulsed method also has the advantage that the vote is facilitated tert. Furthermore, smaller and therefore energy-saving components for Be provision of pressure and / or flow can be used.
  • At least two Re aktanten each subjected to high pressure and injected using a high-pressure injection valve under high pressure into the reactor.
  • the nozzles of the high-pressure injection valves are preferably aligned at an angle to each other, so that the reactants meet in the reactor. This shear forces are generated, which lead to a very fine atomization of the reactants. In this way, a further acceleration of the desired chemical reaction is achieved.
  • At least one reactant is injected into a further reactant already present in the reactor.
  • the reactant injected into the reactor penetrates deep into the already existing reactants, so that high shear rates are achieved, which contribute to a rapid mixing and thus to an accelerated chemical reaction of the reactants.
  • the high-pressure injection can also deliberately cavitation bubbles are introduced into the already existing reactants ago, which then collapse and thereby generate turbulence in the reactor, which also contribute to an acceleration of the ge wished chemical reaction.
  • the reac tant already present in the reactor is preferably fed via a lateral feed to the reactor, wherein wei terhin preferably the feed takes place continuously.
  • the reactor is only partially filled with a reactant into which then at least one further reactant is injected.
  • a gas layer in particular an air layer, forms above the reactant present, through which the further reactant is injected.
  • the reactants can each be a liquid.
  • at least one reactant may also be a gas.
  • a gaseous medium can be used as a reactant, which is injected under high pressure into the reactor.
  • a so-called bubble column reactor is known, which allows the injection of a gas into a liquid. This entste hen comparatively large bubbles.
  • very small bubbles can be generated during injection of the gaseous medium, so that the reaction rate increases.
  • a device is furthermore proposed that comprises a reactor and at least one high-pressure injection valve assigned to the reactor.
  • the high-pressure injection valve has a nozzle and a nozzle movable with the hub movable nozzle needle for injecting egg nes reactant into the reactor under high pressure.
  • the high-pressure injection valve may in particular be a known from the fuel injection technology known valve, the injection pressures over 2,000 bar made light. This means that high pulses can be generated in the reactor, which contribute to a acceleration of the desired chemical reaction. Furthermore, very small quantities can be displayed, which enable an exact metering or metering of the reactant to be injected.
  • the device comprises at least one high-pressure pump for compressing a reactant.
  • the high-pressure pump can be designed, for example, as a piston pump analogous to a high-pressure fuel pump.
  • the device can be resorted to known components of the fuel injection technology, so that the device can be comparatively inexpensive Umset zen.
  • the reactor has an inlet for a further reactant.
  • the feed can be arranged in particular laterally with respect to the reactor, while the at least one high-pressure injection valve is preferably arranged above the reactor. Gravity in this case supports deep penetration of the injected reactant into the reactants already in the reactor.
  • the nozzle is followed by a mixing chamber.
  • another medium may be present, which is entrained in the injection of the reactant of this.
  • an additional substance in particular excipient, can be introduced into the reactor.
  • This may in particular be a solid material, preferably a solid in the form of nanoparticles.
  • the mixing chamber is preferably placed on the nozzle an adapter so that the nozzle and the adapter together delimit the mixing chamber. In this way can be dispensed with a separate fitting for the addition of the further substance.
  • FIG. 1 shows a schematic longitudinal section through a device according to the invention according to a first preferred embodiment
  • FIG. 2 shows a schematic longitudinal section through a device according to the invention according to a second preferred embodiment
  • FIG. 3 shows a schematic longitudinal section through a device according to the invention according to a third preferred embodiment
  • Fig. 4 is a schematic longitudinal section through an inventive device according to a fourth preferred embodiment.
  • Fig. 5 is a schematic longitudinal section through an inventive device according to a fifth preferred embodiment.
  • the device shown in FIG. 1 comprises a reactor 3, above which a high-pressure injection valve 4 is arranged.
  • the high-pressure injection valve 4 has a nozzle 5 and a hub-movable nozzle needle 6 cooperating with the nozzle 5, via the stroke of which at least one injection opening 14 formed in the nozzle 5 can be released.
  • a high-pressure reactant 1 can be injected into the reactor 3.
  • a further reactant 2 is added, in which the first reactant 1 is injected by means of the high-pressure injection valve 4.
  • the first reac tant 1 penetrates deeply into the second reactant 2, so that shear forces lead to a rupture of the second reactant 2. In this way, a thorough mixing of the two reactants 1, 2 is achieved, which leads to an acceleration of the desired chemical reaction.
  • FIG. 2 shows a further embodiment of a device according to the invention.
  • the nozzle 5 of the high-pressure injection valve 4 does not submerge in the second reactant 2 already present in the reactor 3, so that contact of the nozzle 5 with the reactant 2 is avoided.
  • FIG. 3 is a device according to the invention with a reactor 3 with a mallli chen inlet 7 for the other reactants 2 refer. On the side to run 7, the further reactant 2 to the reactor 3 can be fed. On the bottom side, the reactor has an outlet 12, via which the reactants 1, 2 are removed from the reactor 3 after the chemical reaction.
  • a further medium 9 can be introduced into the reactor 3 in a simple manner.
  • an adapter 11 is arranged for this purpose, in which a mixing chamber 8 is out forms, in which the further medium 9 is received.
  • the first reactant 1 is then injected via the mixing chamber 8 into the reactor 3.
  • the reac tant 1 tears the other medium 9 with.
  • FIG. 5 A further preferred embodiment of a device according to the invention is shown in FIG. 5.
  • two reactants 1, 2 respectively by means of a high-pressure pump 10 subjected to high pressure and injected in each case under high pressure by means of a high-pressure injection valve 4 in the reactor 3.
  • the nozzles 5 of the two high-pressure injection valves 4 are aligned obliquely to each other, so that the spray rays meet or intersect. In this way, a very fine atomization of both reactants 1, 2 is achieved, so that an increase in surface area is effected, which leads to an acceleration of the desired chemical reaction.

Landscapes

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

Abstract

L'invention concerne un procédé pour accélérer une réaction chimique entre au moins deux réactifs (1, 2) dans un réacteur chimique (3), au moins un réactif (1) étant soumis à une haute pression et injecté sous haute pression dans le réacteur chimique (3). Une soupape d'injection haute pression (4) pourvue d'une buse (5) et d'un pointeau (6) pouvant effectuer un mouvement de va-et-vient et coopérant avec la buse (5) est utilisée pour injecter le réactif. L'invention concerne en outre un dispositif permettant de mettre en œuvre ce procédé.
PCT/EP2019/056815 2018-04-20 2019-03-19 Procédé et dispositif pour accélérer une réaction chimique entre au moins deux réactifs dans un réacteur chimique Ceased WO2019201533A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018206106.8 2018-04-20
DE102018206106.8A DE102018206106A1 (de) 2018-04-20 2018-04-20 Verfahren und Vorrichtung zur Beschleunigung einer chemischen Reaktion zwischen mindestens zwei Reaktanten in einem chemischen Reaktor

Publications (1)

Publication Number Publication Date
WO2019201533A1 true WO2019201533A1 (fr) 2019-10-24

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PCT/EP2019/056815 Ceased WO2019201533A1 (fr) 2018-04-20 2019-03-19 Procédé et dispositif pour accélérer une réaction chimique entre au moins deux réactifs dans un réacteur chimique

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DE (1) DE102018206106A1 (fr)
WO (1) WO2019201533A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3159376A1 (fr) * 2024-02-20 2025-08-22 Rheonis Procédé et dispositif pour la préparation d’un produit à partir de la mise en contact de flux dirigés sécants de solide divisé et de liquide

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4307838A (en) * 1978-06-24 1981-12-29 Plessey Handel Und Investments Ag Fuel injector
EP0830894A1 (fr) * 1996-09-20 1998-03-25 Bayer Ag Réacteur-mélangeur et procédé pour réaliser des réactions, en particulier la phosgénation d'amines primaires
JP2004092969A (ja) * 2002-08-30 2004-03-25 Fuji Photo Film Co Ltd 噴霧乾燥装置
JP2010116852A (ja) * 2008-11-13 2010-05-27 Toyota Motor Corp 内燃機関の燃料噴射装置
EP3243564A1 (fr) * 2016-05-13 2017-11-15 Karlsruher Institut für Technologie Dispositif et procede pour la realisation de reactions de precipitation par association d'au moins deux produits de depart

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4307838A (en) * 1978-06-24 1981-12-29 Plessey Handel Und Investments Ag Fuel injector
EP0830894A1 (fr) * 1996-09-20 1998-03-25 Bayer Ag Réacteur-mélangeur et procédé pour réaliser des réactions, en particulier la phosgénation d'amines primaires
JP2004092969A (ja) * 2002-08-30 2004-03-25 Fuji Photo Film Co Ltd 噴霧乾燥装置
JP2010116852A (ja) * 2008-11-13 2010-05-27 Toyota Motor Corp 内燃機関の燃料噴射装置
EP3243564A1 (fr) * 2016-05-13 2017-11-15 Karlsruher Institut für Technologie Dispositif et procede pour la realisation de reactions de precipitation par association d'au moins deux produits de depart

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DE102018206106A1 (de) 2019-10-24

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