WO2007085671A1 - Réacteur de précipitation gaz-liquide-solide - Google Patents

Réacteur de précipitation gaz-liquide-solide Download PDF

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Publication number
WO2007085671A1
WO2007085671A1 PCT/ES2007/000031 ES2007000031W WO2007085671A1 WO 2007085671 A1 WO2007085671 A1 WO 2007085671A1 ES 2007000031 W ES2007000031 W ES 2007000031W WO 2007085671 A1 WO2007085671 A1 WO 2007085671A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
liquid
tank
bubbles
central tube
Prior art date
Application number
PCT/ES2007/000031
Other languages
English (en)
Spanish (es)
Inventor
Jaime NUÑEZ AGUILAR
Pedro Luis Arias Ergueta
Blanca Egia Laka
Jose Francisco CAMBRA IBAÑEZ
Maria Belen GÜEMEZ BILBAO
Victoria Laura Barrio Cagigal
Original Assignee
Universidad Del Pais Vasco - Euskal Herriko Unibertsitatea
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 Universidad Del Pais Vasco - Euskal Herriko Unibertsitatea filed Critical Universidad Del Pais Vasco - Euskal Herriko Unibertsitatea
Publication of WO2007085671A1 publication Critical patent/WO2007085671A1/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
    • B01J10/00—Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially adapted therefor
    • B01J10/002—Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially adapted therefor carried out in foam, aerosol or bubbles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
    • 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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23311—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2335—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the direction of introduction of the gas relative to the stirrer
    • B01F23/23351—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the direction of introduction of the gas relative to the stirrer the gas moving along the axis of rotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2336—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer
    • B01F23/23362—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer the gas being introduced under the stirrer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/115—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis
    • B01F27/1151—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis with holes on the surface
    • 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
    • B01F35/10—Maintenance of mixers
    • B01F35/12—Maintenance of mixers using mechanical means
    • B01F35/122—Maintenance of mixers using mechanical means using pushers, i.e. a piston, for pushing out rests of products
    • 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
    • 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
    • B01J2219/00761—Details of the reactor
    • B01J2219/00763—Baffles
    • B01J2219/00779—Baffles attached to the stirring means

Definitions

  • the present invention relates to a precipitation reactor in which the reaction between a gas and a liquid housed therein is carried out to cause precipitation of a solid phase.
  • the reactor incorporates an agitator inside which facilitates an intimate contact of the gas with the liquid so that the gas is retained as long as possible within the solution to achieve the highest possible precipitation of particles. solid and that has means that facilitate the evacuation of said solid particles.
  • Reactors are known in which the purification of the gases is carried out by means of the projection of the gas in liquid medium, incorporating for this purpose inside the reactor solid decantation systems.
  • a gas-liquid reaction is carried out to cause the precipitation of a solid phase, incorporating in its interior an agitator that hinders the displacement of the bubbles towards the surface for this way to keep the gas in the solution for a longer time, improving the contact time with the liquid.
  • the proposed precipitation reactor stands out mainly because it incorporates a cleaning system that allows the precipitation of solid particles contained in the gas simultaneously and without the need to stop the equipment while the gas is bubbled into the reactant liquid. contained in the reactor, as well as facilitates the draining of solids for the use of the reactant liquid free of solid particles in the reaction zone with the gas.
  • the reactor has a lid that guarantees its pressure-tight seal and has a central hole through which an agitator stands out, as well as incorporating one or more holes that allow sampling for subsequent analysis or the insertion of measuring equipment (phmetro or others).
  • a pressure control valve can be incorporated either for a discontinuous operation or a continuous operation of the gas phase.
  • the reactor in the lid or in the body, can have inputs and outputs for the continuous operation of the liquid phase as well as the extraction by the bottom of the precipitated mud.
  • the reactor incorporates in its interior a trap disk that allows the solids to be directed towards the bottom of the reactor and through a stirring movement confines almost all of the precipitated solid under it, preventing the solids from being incorporated into the agitation and obstructing the diffuser.
  • This trap disc can descend driven from the outside to drain the solids, incorporating for this purpose legs provided with springs that facilitate its vertical movement.
  • the agitator is conceived in accordance with a design that allows intimate contact of the gas with the liquid so that the gas is retained as long as possible within the solution.
  • the agitator has a central tube with an upper inlet and an outlet diffuser at its base consisting of slits of very small width through which the gas gushed out in the reactant liquid contained in the reactor.
  • slits can be cleaned of possible solid deposits by means of a piston with blades that penetrates inside the tube through its lower mouth, with a spring that facilitates the movement of the piston inside by the variable thrust that exerts the pressure of the gas on it, so that the piston in its movement drags the solid particles clearing the slits.
  • the slots have holes that allow the solids to be trapped inside the tube to be evacuated, as well as the cleaning plunger can have a cone topped off that directs the solids to these holes, thus preventing their accumulation inside the tube.
  • the agitator incorporates a gas distribution zone that is designed for the most optimal distribution and dispersion of this gas and which consists of a distributor disk equipped with stirring blades, which can be adapted in height at the most appropriate level for each process taking into account the amount of solids that can accumulate in this area.
  • the stirring blades By means of the stirring blades, the bubbles are prevented from rising to the surface vertically, as well as the gas is distributed towards the periphery of the reactor, causing the bubbles to collide with the reactor walls.
  • the gas Once the gas is distributed and dispersed through the diffuser and the distributor disk, the gas enters the homogenization zone of the agitator.
  • This area consists of a series of homogenizing blades welded to the central tube of the agitator equipped with several perforations on its surface, designed to break the large bubbles that would be the fastest to reach the free surface of the liquid. Also these vanes are designed to direct the bubbles towards the bottom of the reactor and move them towards their walls according to their direction of rotation and the upper fold of each vane.
  • this area there is a retention disk whose diameter is adjusted to the inner diameter of the reactor that prevents the bubbles from sticking to the walls of the reactor, by the action of blades located at the end of said disk. These blades make the bubbles come back and remain in this retention zone.
  • the design of the retention disk contemplates that the bubbles continue vertically towards the surface through its central part where there are small holes. This design allows the gas to remain as long as possible in contact with the liquid solution.
  • the retention disc is mobile so that it can be placed at the most appropriate level possible.
  • This recirculation disk is also mobile, to fix it at the most appropriate level of the agitator.
  • the direction of rotation and the inclination of the vanes of the recirculation disk make return as many bubbles as possible keeping them as long as possible in this recirculation zone.
  • Figure 1. Shows a schematic view of the reactor in which its constituent elements are observed.
  • Figure 2.- Shows a front view of the agitator.
  • Figure 3. Shows a front view of the central tube of the agitator.
  • Figure 4.- Shows an elevation view of the distribution disk mounted on the central tube.
  • Figure 5.- Shows a plan view of the distribution disk.
  • Figure 6. It shows a view of the diffuser of the central tube of the agitator with a detail in section of the grooved sector, as well as the cleaning piston is shown facing the outlet of the central tube.
  • Figure 7. It shows a view similar to that represented in the previous figure in which the plunger is inserted in the tube for cleaning it and leaving the solids that accumulate in the slits.
  • Figure 8.- Shows an elevation view of the pallets homogenizers
  • Figure 9.- Shows an elevation view of the bubble retention disc mounted on the central tube.
  • Figure 10.- Shows a plan view of the bubble retention disc.
  • Figure 11.- Shows an elevation view of the bubble recirculation disk mounted on the central tube.
  • Figure 12.- Shows a plan view of the bubble recirculation disk.
  • Figure 13.- Shows a sectioned elevation view of the reactor cover.
  • Figure 14.- Shows a perspective view of the trap disk that is located at the base of the reactor.
  • the reactor consists of a reservoir (1) container of reactant liquid that is topped off by a lid (2) that is crossed by a stirrer
  • the agitator (3) incorporates, mounted superiorly to the outlet diffuser (5) and on the central tube (4), a distributor disk (6), represented in figures 4 and 5, provided with stirring vanes (7) that in its rotating movement prevents the bubbles from rising to the surface vertically by distributing the bubbles towards the walls of the tank (1) against which they collide.
  • a retention disc (10) As can be seen in figures 9 and 10, whose diameter is slightly smaller than the inside diameter of the tank (1) and which is provided with blades (11), straight or curved, located inferiorly.
  • said vanes prevent the bubbles from sticking to the walls of the tank (1) by keeping them under said retention disc (10), being also provided with small holes (12) in their central area through which the bubbles are directed in the vertical direction.
  • the above-mentioned outlet diffuser (5) as seen in detail in Figures 6 and 7, consists of slits (15) of very small width through which the gaseous gas exits in the reactant liquid, in which holes are also defined (16) that allow the solids trapped inside the central tube (4) to be evacuated with the collaboration of cleaning means (17, 18, 19, 20).
  • Said cleaning means (17, 18, 19, 20) basically consist of a piston with blades (17) provided with vertical movement in the lower mouth of the central tube (4) that moves inside it driven by the variable gas pressure dragging the solid particles through the holes (16) thus clearing the slits (15).
  • the cleaning means (17, 18, 19, 20) comprise an axis (18) on which the piston with blades (17) moves against the elastic action of a spring (19) also mounted around the axis (18) .
  • the plunger with blades (17) can be found topped by a conical surface (20) that facilitates the dragging of solid particles in their vertical movement, all as seen in Figures 6 and 7.
  • Figure 13 shows the cover (2) of the reactor in which there is a central hole (21) through which the agitator (3), and the access and / or exit ducts (22) and (23) stand out. ) that allow the taking of samples, and / or the insertion of instrumentation and / or the control of the pressure, both for continuous and discontinuous operation.
  • Figure 14 shows the trap disk (24), also represented in Figure 1 inside and on the base of the tank (1), which is provided with descending grooves (25) on its upper face that directs the solids towards the bottom of the tank (1) by action of a stirring movement, the trap disk (24) being mounted on springs (26) surrounding legs (27) to allow movement of agitation of said trap disk (24).

Landscapes

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

Abstract

L'invention concerne un réacteur équipé de moyens (17, 18, 19, 20) de nettoyage associés à la bouche de sortie inférieure d'un tube central (4) d'un agitateur (3), par l'entrée supérieure duquel pénètre un gaz traversant le tube central (4) et débouchant dans la partie inférieure de l'intérieur du réservoir (1) à travers un diffuseur (5) de sortie, barbotant dans un liquide de réaction contenu dans le réacteur. Lesdits moyens (17, 18, 19, 20) de nettoyage permettent, de manière simultanée et sans nécessité d'arrêter le réacteur, la précipitation et la sortie des particules solides contenues dans le gaz pendant le barbotage. L'invention permet également l'égouttage des solides au moyen d'un disque (24) à trappe situé à l'intérieur et sur la base du réservoir (1), qui est doté de cannelures descendantes (25) dans sa face supérieure, dirigeant les solides vers le fond du réservoir (1) par un mouvement d'agitation.
PCT/ES2007/000031 2006-01-24 2007-01-24 Réacteur de précipitation gaz-liquide-solide WO2007085671A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES200600150A ES2296500B1 (es) 2006-01-24 2006-01-24 Reactor de precipitacion gas-liquido-solido.
ESP200600150 2006-01-24

Publications (1)

Publication Number Publication Date
WO2007085671A1 true WO2007085671A1 (fr) 2007-08-02

Family

ID=38308883

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2007/000031 WO2007085671A1 (fr) 2006-01-24 2007-01-24 Réacteur de précipitation gaz-liquide-solide

Country Status (2)

Country Link
ES (1) ES2296500B1 (fr)
WO (1) WO2007085671A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3010085A1 (fr) * 2013-09-03 2015-03-06 Solvay Procede pour precipiter une matiere plastique en solution dans un solvant
CN105195003A (zh) * 2015-10-23 2015-12-30 宿州市皖神面制品有限公司 一种用于锅炉烟气的脱硫脱硝除尘装置
CN108592643A (zh) * 2018-05-10 2018-09-28 遵义中铂硬质合金有限责任公司 烧结炉废气处理装置
CN109289490A (zh) * 2018-11-07 2019-02-01 金世杰 一种节能环保废气净化处理装置
CN109589769A (zh) * 2018-11-01 2019-04-09 韩燕� 一种废气处理用酸雾净化塔
US20220040652A1 (en) * 2020-01-17 2022-02-10 Hamilton Beach Brands, Inc. Food processor with cleaning accessory and methods of using same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113813858B (zh) * 2021-11-10 2023-01-31 西安国际医学中心有限公司 一种治疗癌症疼痛膏药制作的混料装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB239761A (en) * 1924-12-22 1925-09-17 Collin & Company Improvements in or relating to washing or absorption apparatus for gases or vapours
US3253821A (en) * 1962-06-04 1966-05-31 Ajem Lab Inc Gas washing apparatus having a rotating bowl pump
US4936878A (en) * 1986-09-17 1990-06-26 Flakt Ab Method for cleansing gas and apparatus herefor
ES2048007T3 (es) * 1989-12-05 1994-03-01 Univ Toronto Metodo y aparato para efectuar contacto gas-liquido.
US6402816B1 (en) * 1997-10-08 2002-06-11 Gordon S. Trivett Gas scrubber

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB239761A (en) * 1924-12-22 1925-09-17 Collin & Company Improvements in or relating to washing or absorption apparatus for gases or vapours
US3253821A (en) * 1962-06-04 1966-05-31 Ajem Lab Inc Gas washing apparatus having a rotating bowl pump
US4936878A (en) * 1986-09-17 1990-06-26 Flakt Ab Method for cleansing gas and apparatus herefor
ES2048007T3 (es) * 1989-12-05 1994-03-01 Univ Toronto Metodo y aparato para efectuar contacto gas-liquido.
US6402816B1 (en) * 1997-10-08 2002-06-11 Gordon S. Trivett Gas scrubber

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3010085A1 (fr) * 2013-09-03 2015-03-06 Solvay Procede pour precipiter une matiere plastique en solution dans un solvant
CN105195003A (zh) * 2015-10-23 2015-12-30 宿州市皖神面制品有限公司 一种用于锅炉烟气的脱硫脱硝除尘装置
CN108592643A (zh) * 2018-05-10 2018-09-28 遵义中铂硬质合金有限责任公司 烧结炉废气处理装置
CN109589769A (zh) * 2018-11-01 2019-04-09 韩燕� 一种废气处理用酸雾净化塔
CN109289490A (zh) * 2018-11-07 2019-02-01 金世杰 一种节能环保废气净化处理装置
US20220040652A1 (en) * 2020-01-17 2022-02-10 Hamilton Beach Brands, Inc. Food processor with cleaning accessory and methods of using same

Also Published As

Publication number Publication date
ES2296500A1 (es) 2008-04-16
ES2296500B1 (es) 2009-03-16

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