ES2290370T3 - PROCEDURE AND DEVICE FOR MIXING FLUIDS IN FLUIR CAPABLE MEANS. - Google Patents

PROCEDURE AND DEVICE FOR MIXING FLUIDS IN FLUIR CAPABLE MEANS. Download PDF

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Publication number
ES2290370T3
ES2290370T3 ES03005018T ES03005018T ES2290370T3 ES 2290370 T3 ES2290370 T3 ES 2290370T3 ES 03005018 T ES03005018 T ES 03005018T ES 03005018 T ES03005018 T ES 03005018T ES 2290370 T3 ES2290370 T3 ES 2290370T3
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Spain
Prior art keywords
fibrous material
medium
mixed
fluid
flowing
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Expired - Lifetime
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ES03005018T
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Spanish (es)
Inventor
Max Dipl. Ing. Grengg
Peter Dipl.Ing.Dr. Scheucher
Johann Ing. Strasser
Kaj Henricson
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Andritz AG
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Andritz AG
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/34—Kneading or mixing; Pulpers
    • D21B1/342—Mixing apparatus
    • 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
    • B01F23/2331—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
    • B01F23/23314—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 element
    • 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
    • B01F23/23364—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 between 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
    • B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
    • B01F23/2376—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media characterised by the gas being introduced
    • B01F23/23767—Introducing steam or damp in liquids
    • 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
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/43—Mixing liquids with liquids; Emulsifying using driven stirrers
    • 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
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3131—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
    • 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
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3132—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices
    • 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
    • B01F27/50—Pipe mixers, i.e. mixers wherein the materials to be mixed flow continuously through pipes, e.g. column mixers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

In a process to admix a fluid into a fibrous suspension of e.g. cellulose, the fluid is esp. admixed at high relative speed and at a higher temperature of e.g. 180degreesC. The admixed fluid is e.g. steam which heats the medium to e.g. 180degreesC. In a further embodiment, the admixed fluid is a reactive gas e.g. oxygen, ozone or chlorine. In a further alternative embodiment, the admixed fluid is e.g. water, peroxide, caustic solution, acid, additives, catalysts or other additive agents. The steam, gas or liquid may be admixed at high speed by themselves or in conjunction with each other. Also claimed is a commensurate assembly with e.g. a rotor (10) located between the incoming fluid and the fibrous suspension. A jet (16) distribution (15) array is located in the zone where high relative speeds pertain. The rotor has a hollow shaft (13) feeding the jets (16) with the incoming fluid. The rotor (10) assembly is located within a pipe bend or tank immediately prior to a reactor vessel.

Description

Procedimiento y dispositivo para mezclar fluidos en medios capaces de fluir.Procedure and device for mixing fluids in media capable of flowing.

La presente invención se refiere a un procedimiento para mezclar fluidos con medios capaces de fluir, por ejemplo suspensiones de material fibroso. Además, se refiere a un dispositivo para realizar el procedimiento.The present invention relates to a procedure for mixing fluids with media capable of flowing, by example suspensions of fibrous material. In addition, it refers to a device to perform the procedure.

En diferentes procesos es necesario introducir en medios fluyentes, en solitario o conjuntamente, vapor, gases de reacción, agua o sustancias químicas. Especialmente, en el ámbito de la industrial del papel y de la celulosa se utiliza generalmente vapor para calentar agua (filtrados) y suspensiones. Hoy en día esto se realiza generalmente en una tubería que conduce a un recipiente de reacción. Además, hay que mezclar sustancias químicas muy diferentes en forma gaseosa y/o líquida con introducidas con medios fluyentes. Si se deben mezclar líquidos, existe entonces la posibilidad de mezcladores estáticos, es decir, el líquido a mezclar se introduce en la tubería, por ejemplo se ingresa en ésta y, a continuación, se la transporta junto con el líquido, por ejemplo suspensión de material fibroso, por medio de un dispositivo en el que se mezclan las dos corrientes de medios por efecto de múltiples desviaciones. Si se deben mezclar gases o el vapor, esto se realiza frecuentemente por medio de toberas dispuestas en la periferia del tubo, de modo que se produce una distribución de la cantidad total a dosificar sobre varios (muchos) lugares de dosificación. El inconveniente de todos estos procedimientos o disposiciones consiste en que se realiza ya localmente en los lugares de dosificación una reacción, especialmente en el caso de sustancias químicas muy reactivas y en el caso de vapor, con lo que pueden aparecer irregularidades en la distribución. Si se utiliza vapor para calentar medios, pueden configurarse sobrecalentamientos locales en los lugares de dosificación, lo que, por ejemplo en suspensiones de material fibroso, llevará a daños en las fibras.In different processes it is necessary to introduce in flowing media, alone or together, steam, gases reaction, water or chemicals. Especially, in the field of the paper and cellulose industry is generally used steam to heat water (filtered) and suspensions. Today this it is usually done in a pipe that leads to a container of reaction. In addition, you have to mix chemicals very different in gaseous and / or liquid form with introduced with media flowing If liquids must be mixed, then there is possibility of static mixers, that is, the liquid to mix it is introduced into the pipe, for example it is entered into the pipe and, at then it is transported along with the liquid, for example suspension of fibrous material, by means of a device in the that the two media streams are mixed by the effect of multiple deviations If gases or steam must be mixed, this is done frequently by means of nozzles arranged on the periphery of the tube, so that a distribution of the total amount to dose over several (many) dosage sites. He inconvenience of all these procedures or provisions consists  in which it is already done locally at the dosing sites a reaction, especially in the case of very chemical substances reactive and in the case of steam, which may appear irregularities in the distribution. If steam is used for heating media, local overheating can be configured in the dosing locations, which, for example in suspensions of Fibrous material, will lead to damage to the fibers.

El documento US-A-4 577 974 muestra, por ejemplo, un dispositivo en el que se introduce un medio a través de un codo de tubo y este medio fluye axialmente contra un rotor, desde donde se la "lanza" hacia la sección transversal exterior. El documento WO 97 46310 A muestra un rotor con aberturas en el árbol, instalándose el rotor en posición sustancialmente perpendicular a la dirección de circulación. Por tanto, el suministro de fluido se realiza tanto en la dirección de circulación, como también del rotor contra la dirección de circulación en la otra mitad. En el documento WO 93 07961 A, en una variante, se aspira gas de la corriente de líquido. El documento WO 97 46309 A describe un mezclador en el que la corriente de suspensión es desviada por una placa que hace de válvula en la dirección de circulación, de tal modo que penetre excéntricamente en el espacio de mezclado. En un lado del espacio de mezclado se suministran a continuación sustancias químicas. En el documento US-A-5 863 120 se introducen sustancias químicas a través de la parte hueca de un árbol de rotor, estando dispuesto el rotor en un codo de tubo con afluencia de corriente irregular.The document US-A-4 577 974 shows, for example, a device in which a medium is inserted through an elbow of tube and this medium flows axially against a rotor, from where it is "thrown" towards the outer cross section. He WO 97 46310 A shows a rotor with openings in the shaft, the rotor being installed in a position substantially perpendicular to the Direction of movement Therefore, the fluid supply is performs both in the direction of movement, as well as the rotor against the direction of movement in the other half. At WO 93 07961 A, in a variant, gas is aspirated from the liquid stream WO 97 46309 A describes a mixer in which the suspension current is diverted by a plate that acts as a valve in the direction of circulation, such so that it penetrates eccentrically in the mixing space. In a side of the mixing space are supplied below chemical substances. In the document US-A-5 863 120 are introduced chemical substances through the hollow part of a tree rotor, the rotor being arranged in a tube bend with influx of irregular current.

Por tanto, el objetivo de la invención es crear una distribución uniforme de fluidos que se han de mezclar en medios fluyentes.Therefore, the objective of the invention is to create a uniform distribution of fluids to be mixed in flowing media.

Conforme al procedimiento según la invención, el fluido que se va a mezclar se introduce directamente en este medio fluyente con elevada velocidad relativa por medio de un rotor que consta de un árbol hueco y un dispositivo de distribución dispuesto en el extremo del árbol hueco y dotado de aberturas de salida, por ejemplo un dispositivo de distribución en forma de estrella y se le distribuye de manera uniforme por medio del giro del dispositivo de distribución. Debido al mezclado del fluido a través de un dispositivo de distribución dispuesto en el extremo del árbol hueco puede lograrse un una distribución muy ampliamente uniforme del fluido en medio fluyente. Se evitan así prácticamente también sobrecalentamientos locales (durante el suministro de vapor) o daños, por ejemplo de las fibras. Cuando se mezclan sustancias químicas, pueden conseguirse así una distribución uniforme y, por tanto, una acción uniforme.According to the method according to the invention, the fluid to be mixed is introduced directly into this medium flux with high relative velocity by means of a rotor that It consists of a hollow tree and an arranged distribution device at the end of the hollow shaft and provided with outlet openings, by example a star-shaped distribution device and it will be evenly distributed by turning the device distribution. Due to the mixing of the fluid through a distribution device arranged at the end of the hollow shaft a very broadly uniform distribution of the fluid in flowing medium. They are thus practically avoided as well. local overheating (during steam supply) or damage, for example of the fibers. When substances are mixed chemical, can thus achieve a uniform distribution and, by Therefore, a uniform action.

Un perfeccionamiento ventajoso de la invención está caracterizado porque se mezcla vapor con el medio fluyente, por ejemplo suspensión de material fibroso y, por tanto, el medio, en particular una suspensión de material fibroso, se calienta a una temperatura más alta, por ejemplo hasta 180ºC. Debido al mezclado de vapor poco antes de un recipiente, el medio, por ejemplo una suspensión de material fibroso, puede suministrarse ya calentado de manera uniforme. Con una elección adecuada del tipo de adición, el vapor se condensa ya en el medio antes de su entrada en el recipiente, de modo que se garantiza un calentamiento completo.An advantageous improvement of the invention It is characterized in that steam is mixed with the flowing medium, for example suspension of fibrous material and, therefore, the medium, in particular a suspension of fibrous material, is heated to a higher temperature, for example up to 180 ° C. Due to the mixing of steam shortly before a container, the medium, for example a suspension of fibrous material, can be supplied already heated of uniform way. With an appropriate choice of the type of addition, the steam condenses already in the middle before entering the container, so that a complete heating is guaranteed.

Si se mezcla con el medio, por ejemplo una suspensión de material fibroso, un gas, preferentemente un gas de reacción como, por ejemplo, oxígeno, ozono o cloro, resulta entonces una reacción especialmente uniforme con el medio.If mixed with the medium, for example a suspension of fibrous material, a gas, preferably a gas of reaction, such as oxygen, ozone or chlorine, is then an especially uniform reaction with the medium.

Se aplica una consideración análoga cuando se mezcla con el medio fluyente, por ejemplo, una suspensión de material fibroso, un líquido y/o sustancias químicas como, por ejemplo, agua, peróxido, lejías, ácidos, aditivos o materias auxiliares.An analogous consideration is applied when mixing with the flowing medium, for example, a suspension of fibrous material, a liquid and / or chemical substances such as example, water, peroxide, bleach, acids, additives or materials auxiliary

Se ha visto que es especialmente favorable que se mezclen conjuntamente vapor y/o gas y/o líquido.It has been seen that it is especially favorable that steam and / or gas and / or liquid are mixed together.

Una variante especialmente favorable consiste en que el rotor esté equipado con dispositivos de transporte, por ejemplo paletas, de modo que genere una presión de transporte y se transporten simultáneamente los fluidos mezclados.An especially favorable variant consists of that the rotor is equipped with transport devices, for example pallets, so that it generates a transport pressure and Simultaneously transport mixed fluids.

La invención se refiere también a un dispositivo para mezclar fluidos con medios capaces de fluir, por ejemplo suspensiones de material fibroso, estando previsto un rotor que presenta un árbol hueco giratorio para suministrar el fluido, y estando previsto en el extremo del árbol hueco un dispositivo de distribución en forma de estrella con aberturas de salida, a través de las cuales el fluido que se va a mezclar es introducido directamente en el medio fluyente con alta velocidad relativa. Por tanto, el fluido a añadir se distribuye de manera muy fina en el medio, por ejemplo una suspensión de material fibroso.The invention also relates to a device for mixing fluids with media capable of flowing, for example suspensions of fibrous material, a rotor being provided that features a rotating hollow shaft to supply the fluid, and being provided at the end of the hollow tree a device of Star-shaped distribution with exit openings, through of which the fluid to be mixed is introduced directly in the flowing medium with high relative speed. By therefore, the fluid to be added is distributed very finely in the medium, for example a suspension of fibrous material.

Si las aberturas de salida del dispositivo de distribución en forma de estrella están configuradas como toberas, entonces los fluidos que se van a mezclar se pueden suministrar en lugares óptimos.If the output openings of the device Star-shaped distribution are configured as nozzles, then the fluids to be mixed can be supplied in optimal places.

La invención se refiere también a una instalación para mezclar fluidos en medios capaces de fluir, en particular suspensiones de material fibroso. Es ventajoso que el dispositivo esté dispuesto en una tubería, especialmente en una desviación de una tubería.The invention also relates to a installation for mixing fluids in media capable of flowing, in Particular suspensions of fibrous material. It is advantageous that the device is arranged in a pipe, especially in a deviation of a pipe.

Alternativamente, el dispositivo puede estar dispuesto en un recipiente o bien directamente antes de un recipiente de reacción.Alternatively, the device may be arranged in a container or directly before a reaction vessel

La invención se describe a continuación a título de ejemplo a partir de los dibujos, representando la figura 1 un dispositivo según el estado de la técnica y la figura 2, una variante de la invención.The invention is described below by way of title. Example from the drawings, FIG. 1 depicting a device according to the state of the art and figure 2, a variant of the invention.

Las figuras 3 a 5 representan diferentes disposiciones de la invención y la figura 6, un ejemplo de un rotor según la invención.Figures 3 to 5 represent different arrangements of the invention and figure 6, an example of a rotor according to the invention.

La figura 1 muestra una instalación según el estado de la técnica. Se bombea aquí desde un recipiente 1 una suspensión de material fibroso o de celulosa por medio de una bomba 2, pudiendo ser el recipiente 1, por ejemplo, un tubo vertical de un lavadero o de un depósito de almacenamiento. En la tubería 4, junto a la bomba 2, está prevista también una acometida de vapor 6 que consta de varias válvulas de vapor que están dispuestas alrededor de la periferia de la tubería. A continuación, se introduce la suspensión en un recipiente de tratamiento 9 por medio de una bomba de aumento de presión 8. La suspensión debe presentar, en el lugar del suministro de vapor, una presión más reducida que la del vapor suministrado, que es generalmente vapor de baja presión.Figure 1 shows an installation according to state of the art It is pumped here from a container 1 a suspension of fibrous or cellulose material by means of a pump 2, the container 1, for example, being a vertical tube of a laundry or storage warehouse. In pipe 4, next to the pump 2, a steam connection 6 is also provided consisting of several steam valves that are arranged around the periphery of the pipe. Then it introduce the suspension into a treatment vessel 9 by means of a booster pump 8. The suspension must present, at the place of steam supply, a pressure lower than that of the steam supplied, which is generally low steam Pressure.

La figura 2 muestra un dispositivo 10 según la invención, en el que se suministra el medio fluyente, por ejemplo una suspensión de material fibroso, a través de un conducto 11 y se descarga de nuevo el medio mezclado con un fluido a través de una tubería 12. En este caso, el dispositivo 10 presenta un árbol hueco 13 giratorio a través del cual se suministra un fluido 14 como, por ejemplo, vapor, un gas o un líquido. En el extremo del árbol hueco 13 está dispuesto un dispositivo de distribución 15 con aberturas 16 a través de los cuales el fluido que se va a mezclar se introduce directamente en el medio fluyente o circulante con alta velocidad relativa.Figure 2 shows a device 10 according to the invention, in which the flowing medium is supplied, for example a suspension of fibrous material, through a conduit 11 and is discharge the medium mixed with a fluid again through a pipe 12. In this case, the device 10 has a hollow shaft 13 rotating through which a fluid 14 is supplied as, by example, steam, a gas or a liquid. At the end of the hollow tree 13 a distribution device 15 with openings 16 is arranged through which the fluid to be mixed is introduced directly in the flowing or circulating medium with high speed relative.

Las figuras 3 a 5 muestran diferentes disposiciones del dispositivo 10. La figura 3 corresponde aproximadamente a la figura 2, estando dispuesto aquí el dispositivo 10 en un codo de tubería 21. Debido a la desviación del flujo se mejora aún más el mezclado y se reducen las pérdidas de rozamiento.Figures 3 to 5 show different device arrangements 10. Figure 3 corresponds approximately to figure 2, where the device 10 in a pipe bend 21. Due to the deviation of the flow is further improved mixing and losses of friction.

La disposición de la figura 4 muestra un dispositivo 10 según la invención que está dispuesto en un recipiente 22. El rotor 23 se asienta aquí sobre un árbol hueco 13 a través del cual se mezcla de manera uniforme un correspondiente fluido como, por ejemplo, vapor, gas o un líquido. En el caso de una denominada tina de pasta en la industria papelera, se hace circular todo el líquido en el recipiente por medio de la turbulencia generada por el rotor 23 y, por tanto, se garantiza un mezclado uniforme.The arrangement of Figure 4 shows a device 10 according to the invention which is arranged in a vessel 22. The rotor 23 sits here on a hollow shaft 13 through which a corresponding one is mixed uniformly fluid such as steam, gas or a liquid. In the case of a called pasta tub in the paper industry, it is circulated all the liquid in the container by means of turbulence generated by rotor 23 and therefore mixing is guaranteed uniform.

La figura 5 muestra una disposición según la invención del dispositivo 10 en un reactor 24. El medio, por ejemplo una suspensión de material fibroso, se suministra al reactor 24 a través de una tubería 11'. El fluido, por ejemplo vapor, gas o un medio de reacción líquido, se alimenta directamente al medio fluyente con alta velocidad relativa a través del árbol hueco 13 del rotor, que está equipado con al menos un dispositivo de distribución en forma de estrella, y se le distribuye allí de manera uniforme.Figure 5 shows an arrangement according to invention of the device 10 in a reactor 24. The medium, by example a suspension of fibrous material, is supplied to the reactor 24 through an 11 'pipe. The fluid, for example steam, gas or a liquid reaction medium, is fed directly to the medium relative high velocity flow through the hollow shaft 13 of the rotor, which is equipped with at least one device star-shaped distribution, and it is distributed there so uniform.

La figura 6 muestra un ejemplo para un rotor según la invención. Se pueden apreciar bien aquí las aberturas de salida 16 para el fluido que se va a mezclar.Figure 6 shows an example for a rotor according to the invention. The openings of outlet 16 for the fluid to be mixed.

Un uso preferido de la invención reside en el mezclado de vapor y/o sustancias químicas en el campo de la deslignificación y/o blanqueo de la celulosa. En general, se mezclan aquí vapor de calentamiento de la suspensión y/o sustancias químicas de deslignificación y/o blanqueo con una suspensión de recortes de picadura-lejía de cocción o con una suspensión de celulosa que tiene una proporción de fibra de 0,1 a 20%. En este caso, según sea necesario, pueden utilizarse gases como oxígeno, ozono, cloro, dióxido de cloro, dióxido de azufre o líquidos como lejía blanca o peróxido. Adicionalmente, la temperatura es un criterio esencial para la reacción. Por tanto, por medio de vapor, se aumenta la temperatura de partida de la suspensión de celulosa de entre 10 y 100ºC hasta una temperatura mayor de hasta aproximadamente 180ºC. Con la presente invención es posible elevar de manera uniforme la temperatura de la suspensión de celulosa y, por tanto, evitar sobrecalentamientos parciales desventajosos de partes del medio. Con una elección adecuada de las posiciones de suministro, pueden mezclarse de manera uniforme con la suspensión ya calentada (ajuste de la temperatura de reacción necesaria/deseada) el gas de reacción deseado o las sustancias químicas de reacción líquidas. Asimismo, pueden mezclarse favorablemente ácidos o lejías para el ajuste del valor del pH.A preferred use of the invention resides in the mixed steam and / or chemicals in the field of delignification and / or bleaching of cellulose. In general, they mix here steam heating the suspension and / or substances chemical delignification and / or bleaching with a suspension of cuts of bite-bleach cooking or with a cellulose suspension having a fiber ratio of 0.1 to twenty%. In this case, as necessary, gases can be used such as oxygen, ozone, chlorine, chlorine dioxide, sulfur dioxide or liquids such as white bleach or peroxide. Additionally, the Temperature is an essential criterion for the reaction. So, by means of steam, the starting temperature of the cellulose suspension between 10 and 100ºC up to a temperature higher than about 180 ° C. With the present invention it is possible to raise the temperature of the suspension evenly of cellulose and therefore avoid partial overheating disadvantages of parts of the medium. With an appropriate choice of supply positions, can be mixed evenly with the suspension already heated (adjustment of the reaction temperature necessary / desired) the desired reaction gas or substances Liquid reaction chemicals. They can also be mixed favorably acidic or bleach for the adjustment of the pH value.

Claims (11)

1. Procedimiento para mezclar fluidos con medios capaces de fluir, por ejemplo suspensiones de material fibroso, en el que se introduce el fluido que se va a mezclar en este medio fluyente con alta velocidad relativa a través de un rotor que comprende un árbol hueco y un dispositivo de distribución dispuesto en el extremo del árbol hueco y provisto de aberturas de salida, por ejemplo un dispositivo de distribución en forma de estrella, y se le distribuye de manera uniforme por medio del giro del dispositivo de distribución.1. Procedure for mixing fluids with media capable of flowing, for example suspensions of fibrous material, in which introduces the fluid to be mixed in this medium stream with relative high velocity through a rotor that it comprises a hollow shaft and a distribution device arranged at the end of the hollow shaft and provided with outlet openings, for example a star-shaped distribution device, and it is distributed evenly by turning the distribution device 2. Procedimiento según la reivindicación 1, caracterizado porque se mezcla vapor con el medio fluyente, en particular una suspensión de material fibroso y, por tanto, el medio, en particular una suspensión de material fibroso, se calienta a una temperatura superior, por ejemplo, de hasta 180ºC.2. Method according to claim 1, characterized in that steam is mixed with the flowing medium, in particular a suspension of fibrous material and, therefore, the medium, in particular a suspension of fibrous material, is heated to a higher temperature, for example , up to 180 ° C. 3. Procedimiento según la reivindicación 1, caracterizado porque se mezcla en el medio, en particular una suspensión de material fibroso, un gas, preferentemente un gas de reacción como, por ejemplo, oxígeno, ozono o cloro.3. Method according to claim 1, characterized in that a medium of fibrous material, a gas, preferably a reaction gas, such as oxygen, ozone or chlorine, is mixed in the medium. 4. Procedimiento según la reivindicación 1, caracterizado porque se mezclan con el medio, en particular una suspensión de material fibroso, un líquido y/o sustancias químicas como, por ejemplo, agua, peróxido, lejías, ácidos, aditivos o materias auxiliares.Method according to claim 1, characterized in that they are mixed with the medium, in particular a suspension of fibrous material, a liquid and / or chemical substances such as, for example, water, peroxide, bleach, acids, additives or auxiliary materials. 5. Procedimiento según una de las reivindicaciones 1 a 4, caracterizado porque se mezclan conjuntamente vapor y/o gas y/o líquido.5. Method according to one of claims 1 to 4, characterized in that steam and / or gas and / or liquid are mixed together. 6. Procedimiento según una de las reivindicaciones 1 a 5, caracterizado porque el rotor está equipado con unos dispositivos de transporte, por ejemplo paletas, de modo que éste genera un presión de transporte y los fluidos mezclados son transportados simultáneamente.Method according to one of claims 1 to 5, characterized in that the rotor is equipped with transport devices, for example vanes, so that it generates a transport pressure and the mixed fluids are transported simultaneously. 7. Dispositivo (10) para mezclar fluidos con medios capaces de fluir, por ejemplo suspensiones de material fibroso, en el que está previsto un rotor que presenta un árbol hueco giratorio (13) para suministrar los fluidos, caracterizado porque en el extremo del árbol hueco (13) está prevista un dispositivo de distribución en forma de estrella (15) con unas aberturas de salida (16), a través de las cuales el fluido que se va a mezclar es introducido directamente en el medio fluyente con alta velocidad relativa.7. Device (10) for mixing fluids with means capable of flowing, for example suspensions of fibrous material, in which a rotor is provided having a rotating hollow shaft (13) for supplying the fluids, characterized in that at the end of the tree The hollow (13) is provided with a star-shaped distribution device (15) with outlet openings (16), through which the fluid to be mixed is introduced directly into the flowing medium with high relative velocity. 8. Dispositivo según la reivindicación 7, caracterizado porque las aberturas de salida (16) del dispositivo de distribución en forma de estrella están configuradas como toberas.Device according to claim 7, characterized in that the outlet openings (16) of the star-shaped distribution device are configured as nozzles. 9. Instalación para mezclar fluidos con medios capaces de fluir, por ejemplo suspensiones de material fibroso, con un dispositivo según una de las reivindicaciones 7 u 8, caracterizada porque el dispositivo (10) está dispuesto en una tubería (21), en particular en una desviación de una tubería.9. Installation for mixing fluids with means capable of flowing, for example suspensions of fibrous material, with a device according to one of claims 7 or 8, characterized in that the device (10) is arranged in a pipe (21), in particular in a deviation from a pipe. 10. Instalación para mezclar fluidos con medios capaces de fluir, por ejemplo suspensiones de material fibroso, con un dispositivo según una de las reivindicaciones 7 u 8, caracterizada porque el dispositivo (10) está dispuesto en un recipiente (22).10. Installation for mixing fluids with means capable of flowing, for example suspensions of fibrous material, with a device according to one of claims 7 or 8, characterized in that the device (10) is arranged in a container (22). 11. Instalación para mezclar fluidos con medios capaces de fluir, por ejemplo suspensiones de material fibroso, con un dispositivo según una de las reivindicaciones 7 u 8, caracterizada porque el dispositivo (10) está dispuesto directamente delante de un recipiente de reacción (24).11. Installation for mixing fluids with means capable of flowing, for example suspensions of fibrous material, with a device according to one of claims 7 or 8, characterized in that the device (10) is arranged directly in front of a reaction vessel (24) .
ES03005018T 2002-03-21 2003-03-06 PROCEDURE AND DEVICE FOR MIXING FLUIDS IN FLUIR CAPABLE MEANS. Expired - Lifetime ES2290370T3 (en)

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AT0043102A AT413017B (en) 2002-03-21 2002-03-21 METHOD AND DEVICE FOR MIXING FLUIDS INTO FLOWABLE MEDIA
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US7121490B2 (en) * 2004-04-08 2006-10-17 Deseret Laboratories, Inc. Chopper blade apparatus and method for refining particles
EP1600205A1 (en) * 2004-05-28 2005-11-30 Sika Technology AG Mixing apparatus and method for adding an additive to a pumpable mixture
US20060280027A1 (en) * 2005-06-10 2006-12-14 Battelle Memorial Institute Method and apparatus for mixing fluids
WO2007038128A2 (en) * 2005-09-21 2007-04-05 Tarome, Inc. Apparatus and method for use in making ruminant feedstuff
US9102885B2 (en) 2013-07-26 2015-08-11 Renmatix, Inc. Method of transporting viscous slurries
DE102013017887B4 (en) * 2013-10-28 2016-09-15 Bernhard Giersberg mixing device
CN107961687B (en) * 2017-11-21 2024-05-28 中国中轻国际工程有限公司 Internal-mounted static liquid mixing structure and control method thereof

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US4577974A (en) * 1984-05-04 1986-03-25 Kamyr, Inc. Medium consistency mixer rotor and stator construction
FI95821B (en) * 1991-10-18 1995-12-15 Ahlstroem Oy A method and apparatus for mixing a gas with a medium and a bleaching process applying the method
FI104621B (en) * 1996-06-03 2000-03-15 Ahlstroem Oy A method and apparatus for mixing a second medium with a first medium
JPH11511694A (en) * 1996-06-03 1999-10-12 ベロイト・テクノロジーズ・インコーポレイテッド High turbulence mixer
US6193406B1 (en) * 1996-12-20 2001-02-27 Andritz-Ahlstrom Oy Method and apparatus for mixing pulp a suspension with a fluid medium with a freely rotatable mixing rotor
US5863120A (en) * 1997-01-31 1999-01-26 Beloit Technologies, Inc. Medium consistency liquid mixture

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AT413017B (en) 2005-10-15
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PT1347092E (en) 2007-10-24
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ATA4312002A (en) 2005-03-15
DE50307745D1 (en) 2007-09-06

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