WO2008082324A2 - Réacteur cavitationnel à plaques à canaux multiples - Google Patents

Réacteur cavitationnel à plaques à canaux multiples Download PDF

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Publication number
WO2008082324A2
WO2008082324A2 PCT/RU2007/000720 RU2007000720W WO2008082324A2 WO 2008082324 A2 WO2008082324 A2 WO 2008082324A2 RU 2007000720 W RU2007000720 W RU 2007000720W WO 2008082324 A2 WO2008082324 A2 WO 2008082324A2
Authority
WO
WIPO (PCT)
Prior art keywords
cavitation
channel
channels
reactor according
flow
Prior art date
Application number
PCT/RU2007/000720
Other languages
English (en)
Russian (ru)
Other versions
WO2008082324A3 (fr
Inventor
Alexandr Nikolayevich Lebedev
Original Assignee
Alexandr Nikolayevich Lebedev
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 Alexandr Nikolayevich Lebedev filed Critical Alexandr Nikolayevich Lebedev
Publication of WO2008082324A2 publication Critical patent/WO2008082324A2/fr
Publication of WO2008082324A3 publication Critical patent/WO2008082324A3/fr

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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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/008—Processes for carrying out reactions under cavitation conditions
    • 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
    • B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
    • B01F25/3141—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit with additional mixing means other than injector mixers
    • 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
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
    • 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
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
    • B01F25/4335—Mixers with a converging-diverging cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/56—General build-up of the mixers
    • 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
    • B01J19/248—Reactors comprising multiple separated flow channels
    • B01J19/249—Plate-type reactors
    • 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
    • B01J2219/24—Stationary reactors without moving elements inside
    • B01J2219/2401—Reactors comprising multiple separate flow channels
    • B01J2219/245—Plate-type reactors
    • B01J2219/2451—Geometry of the reactor
    • B01J2219/2453—Plates arranged 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
    • B01J2219/24—Stationary reactors without moving elements inside
    • B01J2219/2401—Reactors comprising multiple separate flow channels
    • B01J2219/245—Plate-type reactors
    • B01J2219/2474—Mixing means, e.g. fins or baffles attached to the plates

Definitions

  • the invention relates to devices for the preparation of highly dispersed liquid and gas-liquid media (emulsions, suspensions ...), as well as for the intensification of chemical reactions in liquid and gas media, as well as for heat production.
  • the principle of operation is based on the physical phenomenon of hydrodynamic cavitation.
  • the device can be used for the preparation of fuel mixtures, in particular, water-oil, water-bitumen and water-oil, as well as pharmaceutical, cosmetic, food, etc ...; to intensify the chemical interaction of media and substances, for example, wastewater treatment in the interaction with ozone; to obtain heat released during cavitation of liquids.
  • the cavitation phenomenon that arises under certain conditions in a moving fluid causes local instantaneous (10 "8 sec) pressure values of 10 " 3 MPa and a temperature of 10 4 C 0 in the cavity, and pressure (10 MPa) and microjet velocity 500 in the region of collapse of bubbles m / s, which leads to a sharp activation of heat and mass transfer physicochemical processes in a cavitation reactor.
  • a cavitation reactor contains a housing with a channel for moving fuel in between, and devices that cause cavitation when they flow around the fuel mixture, with at least one baffle located in the channel for separating the flow, on which the said devices are fixed in the form of rods (see RU 30094 Ul , MPK7 BOlF 5/00, 06/20/2003).
  • the disadvantages of the known device - high complexity in the manufacture and repair service, and hence higher production cost
  • the reactor less resistant to hydrodynamic vibrations accompanying the cavitation process, i.e. less stable in comparison with the case channel of the same cross section as the flow cross section between adjacent partitions - the presence of only one channel means that only one medium is subjected to cavitation treatment, namely the one that entered its entrance, i.e. there is no possibility to organize the cavitation interaction of two different media processed in channels with different geometry with different hydrodynamic modes (pumps).
  • the closest to the technical concept of the claimed invention is a cavitation reactor containing a body having a rectangular cross-section with cylindrical cowls, the ratio of the distance between them to the cowling diameter is 0.8-1.1, and the ratio of cowling height to its diameter is 0.8- 1.2 (SU 745050, IPC 7 BOlF 3/08, 08/07/1981). A notch is made on the surface of the fairings.
  • the technical task of the invention is: - improving the operational properties of the reactor while reducing its cost
  • the cavitation reactor is made in the form of a cassette composed of plates fastened together, part of which has cutouts forming the lateral surfaces of the flow channels, and solid plates form the upper and lower surfaces of the channels, and at least one of the channels contains at least one device causing cavitation when the medium flows around it.
  • the implementation of the cavitation reactor in the form of a cartridge, composed of a set of flat plates, allows you to quickly replace the damaged plates, easy to assemble a new product without the laborious operations of milling channels, increases the vibration resistance of the structure.
  • the shape of the flow channel (length and cross-section, as well as the shape, quantity and location in the channel of the devices causing cavitation, depend on the rheological properties of the cavitational media, are selected individually for each final product in order to achieve the desired quality and are a “no-xay” emulsion manufacturer. Selected the optimal channel geometry, as a rule, does not provide the required performance.At least one channel can have a passage section in the form of a rectangle or in the form of a circle channel. al may take the form of a venturi nozzle, the minimum channel cross-sectional area different from the maximum not more than 20 times. At least two channels may have different lengths, the ratio of their lengths is in the range from 1.01 to 100.
  • At least two channels may not be parallel and intersect with each other at an angle from 16 ° to 90 ° and have a communication with each other.
  • the cavitation-inducing device can be made in the form of an obstacle fixed in the channel, streamlined from the incoming flow side, at least no worse than from the opposite side.
  • the obstacle can be made in the form of a body of revolution around an axis passing perpendicular to the flow in the channel or in the form of a rod located perpendicular to the flow, having in its cross section the shape of a truncated circle or oval, or the shape of a triangle or trapezoid and directed by its streamlined side towards the incoming flow.
  • grooves are formed on the surface of the plates or obstacles to form a separated flow of the flow.
  • At least one obstacle causing cavitation has an artificial roughness on the streamlined side.
  • cavitation-causing devices are arranged in several stages along the flow axis at a distance from each other no less than the length of the cavitation and collapse zones of the bubbles.
  • the pressure drops in the flow at each of the cascades may differ from optimally selected ones.
  • the organization of interacting channels is provided when one of the flow channels through the communication channel provides hydraulic back-up of the other flow channel.
  • the cassette can be configured to mount additional tubular channels in it for supplying or discharging additional media, while the tubular channel can simultaneously serve as a device that causes cavitation in the main medium channel.
  • the cavitation reactor can be made in a single
  • insulating casing provided with input and output nozzles according to the number of input / output collectors, and can
  • FIG. 1 is a diagram of a cavitation reactor consisting of plates 1 in accordance with one embodiment
  • FIG. 2 is a section A-A in FIG. L, showing the shape of one of the flow channels
  • FIG. 3 is a section BB in FIG. 1
  • FIG. 4 is a section B-B in FIG. 1, in FIG. 5 - section GG in figure 2.
  • FIG. 6 view G in figure 4.
  • the cavitation reactor is made in the form of a cartridge, consisting of a set of plates 1 tightly pressed and fixedly fixed to each other so that channels are connected to one or more common input collectors for medium 1 and medium 2 and one common one, thanks to the shapes and arrangement of the plates output manifold for emulsion.
  • the cassette contains five channels 2 for processing the medium 1 and four additional tubular channels 3 for processing the medium 2. The latter simultaneously serve as devices that cause cavitation in the channel of the medium 1.
  • Channels 2, 3 are made intersecting at an angle of 90 0 C and interact on Wednesdays 1 and 2 in the cavitation zones.
  • Medium 1 and 2 are mixed (chemically interact) with each other through an open hole (Fig.6) due to the pressure difference in channels 2 and 3.
  • the shape and dimensions of the channels are determined using solid plates 4 forming the upper and lower the plane of the channel, as well as the plates 5 with cutouts forming its side surfaces and setting its height, width and profile.
  • the bore of the channel 2 may be in the form of a rectangle or a circle.
  • the channel 2 can have a variable width, for example, in the form of a Venturi nozzle, while the minimum cross-sectional area of the channel differs from the maximum by no more than 20 times.
  • the plates 4 and plates 5 can be installed in two or more, depending on the required channel sizes.
  • Channels 2 can be parallel to each other or intersect with each other at an angle from 16 ° to 90 °.
  • Channels 2 can have the same shape and length or have different lengths, and it is preferable if the ratio of their lengths is in the range from 1.01 to 100. There are 13 cavitation-causing devices in the channel
  • Devices 6 are located in several cascades (Fig. 2) along the flow axis at a distance from each other no less than the length of the cavitation and collapse zones of the bubbles.
  • the devices 6 are preferably in the form of a body of revolution, the axis of which is perpendicular to the flow in the channel.
  • the device 6 may be made in the form of a rod having in its cross section the shape of a truncated circle or oval or the shape of a triangle or trapezoid and directed by its streamlined side towards the oncoming stream. Preferably, if there is a roughness on the streamlined side of the device 6.
  • the cavitation reactor operates as follows.
  • Medium 1 liquid or gas-liquid medium, for example, a mixture of water and fuel oil — is fed through a common input collector to all five channels 2 formed by plates 4, 5.
  • the geometry of each of the five channels 2 is calculated as optimal for the given rheological properties of medium 1, providing cavitation. If you block the shutters (the shutters are not shown in the figures) part of the channels, the cavitation mode in the open channels is not violated. Thus, it is possible to adjust the processing performance of the medium 1.
  • Cavitation processing of the components of the medium 1 occurs during the flow around the cavitation-causing devices 6 in the channels 2.
  • the devices 6 narrow the passage section of the channels, while the velocity of the medium increases and the pressure in the stream decreases.
  • caverns rarefied zones — are formed in the region immediately after the devices 6.
  • the low-boiling component actively evaporates in them, which causes the appearance of vapor bubbles.
  • the caverns are transformed into micro-jets of steam bubbles, which, falling into the high pressure zone, collapse with force, providing effective mixing of the medium components and its dispersion.
  • Medium 2 enters cavitation zones through channels 3 intersecting channels 2. After joint processing of media 1 and 2 in these zones, the resulting new medium (emulsion) is discharged through a common output collector.
  • the large energy dissipated by the collapse of cavitation microbubbles can lead to increased vibration of the walls of the channels, as well as to cavitation destruction of the surfaces of the flow channels 2 and cavitation devices 6.
  • Vibration reduction is achieved by using plates 4, 5, fastened together, of various shapes, which effectively dampen vibrations due to the friction forces between themselves.
  • a coating of carbide, corrosion-resistant and wear-resistant materials can be made. Since the thickness of the plates is several times less than the minimum size of the channel, for example, its height, the cassette can easily be assembled for a given number of channels and a given channel geometry by a set of desired plates. This allows you to abandon the complex operations of milling channels, and also allows you to easily replace damaged plates and ensure their maintainability.

Landscapes

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

Abstract

L'invention concerne des dispositifs de fabrication de milieux liquides et gaz-liquides hautement dispersés (tels que suspensions ou émulsions) ainsi que d'intensification de réactions chimiques dans des milieux liquides ou gazeux et de production de chaleur. Le réacteur cavitationnel se présente comme une cassette assemblée à partir de plaques fixées les unes aux autres dont une partie comporte des découpes formant les surfaces latérales des canaux d'écoulement, et les plaques continues formes des surfaces supérieure et inférieure des canaux. Au moins dans l'un des canaux on a disposé au moins un dispositif provoquant la cavitation lorsqu'un milieu s'écoule autour de lui. L'utilisation de l'invention permet d'améliorer les qualités d'exploitation du réacteur et de réduire ses coûts, d'augmenter la qualité du traitement cavitationnel de milieux et d'augmenter le degré de régulation de régimes hydrodynamiques de fonctionnement.
PCT/RU2007/000720 2006-12-29 2007-12-20 Réacteur cavitationnel à plaques à canaux multiples WO2008082324A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2006147297/15A RU2336123C1 (ru) 2006-12-29 2006-12-29 Пластинчатый многоканальный кавитационный реактор
RU2006147297 2006-12-29

Publications (2)

Publication Number Publication Date
WO2008082324A2 true WO2008082324A2 (fr) 2008-07-10
WO2008082324A3 WO2008082324A3 (fr) 2008-09-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2007/000720 WO2008082324A2 (fr) 2006-12-29 2007-12-20 Réacteur cavitationnel à plaques à canaux multiples

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RU (1) RU2336123C1 (fr)
WO (1) WO2008082324A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2947187A1 (fr) * 2009-06-24 2010-12-31 Inst Polytechnique Grenoble Procede et dispositif de traitement d'un compose chimique et/ou une espece chimique et/ou transporte par un liquide et/ou un gaz

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2455055C1 (ru) * 2010-12-23 2012-07-10 Общество с ограниченной ответственностью "Полимеры" Устройство для быстрого смешения реагентов
RU194618U1 (ru) * 2019-11-21 2019-12-17 Ассоциация "Группа Компаний "Синтез" Гидродинамический кавитационный гомогенизатор

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB766006A (en) * 1953-10-09 1957-01-16 Urquhart S 1926 Ltd Improvements relating to the mixing of gaseous streams
SU610896A1 (ru) * 1976-10-04 1978-06-15 Украинский научно-исследовательский институт целлюлозно-бумажной промышленности Гидродинамический кавитационны реактор
RU2239491C1 (ru) * 2003-02-05 2004-11-10 Автономная некоммерческая организация "Секция "Инженерные проблемы стабильности и конверсии" Российской инженерной академии" Диспергатор
RU50431U1 (ru) * 2005-08-03 2006-01-20 Автономная некоммерческая организация "Секция "Инженерные проблемы стабильности и конверсии" Российской инженерной академии" Диспергатор
US20060157129A1 (en) * 2002-09-24 2006-07-20 Somerville John M Fluid routing device
RU2285558C1 (ru) * 2005-02-24 2006-10-20 Александр Валерьевич Петров Диспергатор

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB766006A (en) * 1953-10-09 1957-01-16 Urquhart S 1926 Ltd Improvements relating to the mixing of gaseous streams
SU610896A1 (ru) * 1976-10-04 1978-06-15 Украинский научно-исследовательский институт целлюлозно-бумажной промышленности Гидродинамический кавитационны реактор
US20060157129A1 (en) * 2002-09-24 2006-07-20 Somerville John M Fluid routing device
RU2239491C1 (ru) * 2003-02-05 2004-11-10 Автономная некоммерческая организация "Секция "Инженерные проблемы стабильности и конверсии" Российской инженерной академии" Диспергатор
RU2285558C1 (ru) * 2005-02-24 2006-10-20 Александр Валерьевич Петров Диспергатор
RU50431U1 (ru) * 2005-08-03 2006-01-20 Автономная некоммерческая организация "Секция "Инженерные проблемы стабильности и конверсии" Российской инженерной академии" Диспергатор

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2947187A1 (fr) * 2009-06-24 2010-12-31 Inst Polytechnique Grenoble Procede et dispositif de traitement d'un compose chimique et/ou une espece chimique et/ou transporte par un liquide et/ou un gaz

Also Published As

Publication number Publication date
RU2336123C1 (ru) 2008-10-20
WO2008082324A3 (fr) 2008-09-25
RU2006147297A (ru) 2008-07-10

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