WO2017212398A1 - Dispensing device - Google Patents

Dispensing device Download PDF

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Publication number
WO2017212398A1
WO2017212398A1 PCT/IB2017/053321 IB2017053321W WO2017212398A1 WO 2017212398 A1 WO2017212398 A1 WO 2017212398A1 IB 2017053321 W IB2017053321 W IB 2017053321W WO 2017212398 A1 WO2017212398 A1 WO 2017212398A1
Authority
WO
WIPO (PCT)
Prior art keywords
tank
pump
valve
dosing mechanism
pressure
Prior art date
Application number
PCT/IB2017/053321
Other languages
Spanish (es)
French (fr)
Inventor
Diego Andrés ACOSTA MAYA
Carlos Alberto GONZALEZ MEJÍA
Original Assignee
Universidad Eafit
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 Eafit filed Critical Universidad Eafit
Publication of WO2017212398A1 publication Critical patent/WO2017212398A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B11/00—Obtaining noble metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B11/00—Obtaining noble metals
    • C22B11/10—Obtaining noble metals by amalgamating
    • C22B11/12—Apparatus therefor
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/02—Apparatus therefor
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/22—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B1/00—Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B1/00—Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values
    • G05B1/01—Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values electric
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the present invention relates to fluid dosing devices, preferably, dosing fluid (s) to other fluid (s).
  • WO2014090260A1 discloses a zinc precipitation circuit comprising a container configured to carry a pregnant solution with dissolved precious metals.
  • the container includes means for supplying zinc particles.
  • the circuit also has a precipitation filter (for solid-solid separations) located downstream of the vessel; and at least one classifier (eg hydrocyclones, vibrating tables) that separates zinc particles from other precipitates from the filtered (clarified) pregnant solution.
  • the classifier is arranged upstream of the precipitation filter and downstream of the vessel.
  • the circuit comprises a recycle stream with supply means (eg wet conveyors, sludge pump pipes, and / or hoppers) configured to deliver the zinc particles that are separated in the classifier to the container.
  • supply means eg wet conveyors, sludge pump pipes, and / or hoppers
  • the document indicates that an objective of the invention is to reduce the overall size of a Merrill-Crowe type operating plant.
  • the document discloses a deaeration column operating under vacuum conditions, the deaerated pregnant solution comes out of the bottom of the deaeration column.
  • a vacuum pump connected above the deaeration tower is shown in Figure 4 of the document, and a tank with clarified pregnant solution connected by a pipe and a pump to the deaeration tower.
  • the document discloses pumps connected by pipeline to the classifier and to a sterile solution tank (liquid fraction leaving the classifier).
  • the document shows a device that in its configuration requires a pump before the deaeration tower to generate a flow to the same tank and a pump between the deaeration tower and the clarification tank to achieve the precipitation of metals. This configuration implies high costs in the maintenance and operation of the plant.
  • the present invention corresponds to a dosing device comprising a tank, a pressure variator, a dosing mechanism and a pump.
  • the tank is connected to a liquid fluid supply through a conduction line.
  • the pressure variator and the tank are connected by a pipe.
  • the tank is connected to an outlet line that has a breakdown that connects to the dosing mechanism.
  • the pump suction is connected to the outlet line downstream of the breakdown.
  • the discharge of the pump is connected to a discharge line that leaves the battery limits of the process and has a return to the dosing mechanism.
  • the pressure in the pump suction and the pressure given by the pressure variator cause a flow from the tank and the dosing mechanism through the pump.
  • FIG.1 corresponds to the dosing device.
  • FIG.2 corresponds to an embodiment of the dosing device where the pressure variator is a vacuum ejector.
  • FIG.3 corresponds to an embodiment of the dosing device where the pressure variator is a barometric leg.
  • FIG.4 corresponds to an embodiment of the dosing device applied to an emulsion polymerization process.
  • the present invention corresponds to a dosing device comprising: a tank (1) with an inlet, an outlet and a connection, the first inlet is connected to a supply of a liquid fluid by a conduction line, not illustrated, and the outlet is connected to an outlet line;
  • a pressure variator (2) connected to the tank connection (1) by means of a pipe;
  • a dosing mechanism (3) with an inlet and outlet the dosing mechanism (3) is loaded with substances and the outlet is connected to a breakdown of the outlet line between the tank (1) and the pump (4) ;
  • the discharge line is connected to the discharge of the pump (4); where the pump (4) and the pressure variator (2) cause a flow of liquid fluid from the tank (1) and the dosing mechanism (3) through the pump (4).
  • the tank (1) receives and stores a liquid fluid at a pressure different from the ambient pressure.
  • Liquid fluid comes from various sources such as tank trucks, other tanks and other sources of liquid fluid. Said liquid fluid requires a subsequent dosing process.
  • the liquid fluid enters the tank (1) through the conduction line.
  • a first valve (5) is arranged to regulate the flow of liquid fluid into the tank (1).
  • Dispersion means are arranged in the conduction line, such as showers, diffusers, perforated pipes and combinations of the above.
  • the pressure of the liquid fluid inside the conduction line is greater than the pressure in the gas phase of the liquid fluid in the tank (1).
  • a pressure variation process hereinafter, conditioning process
  • the tank (1) and the pressure variator (2) are connected by the pipe.
  • the pressure variator (2) conditions the liquid fluid in the tank (1).
  • a second valve (6) is arranged in the pipeline to control the level of the liquid fluid.
  • An outlet line is connected to the tank (1) which is arranged to allow the exit of liquid fluid.
  • the dosing mechanism (3) is loaded with substances required for the liquid fluid process and is connected to a breakdown of the outlet line. In the breakdown of the output line there is a third valve (7) that regulates the level of the dosing mechanism (3).
  • the pump (4) is connected to the output line. In the suction of the pump (4) there is a fourth valve (8) that prevents the flow through the pump (4) when it is not on.
  • the pump (4) is a centrifugal pump that sucks from the tank (1) and the dosing mechanism (3).
  • the discharge of the pump (4) is connected to a discharge line that has a return line to the dosing mechanism (3) to prevent overpressure of the discharge line.
  • a fifth valve (9) is arranged to control the flow of the discharge line to the dosing mechanism (3).
  • the discharge line of the pump (4) also has an exit from the process on which a sixth valve (10) that regulates the liquid fluid level of the tank (1) is arranged. The effect of the pump (4) and the pressure variator (3) causes a flow from the tank (1) and the dosing mechanism (3).
  • the equivalent head of liquid fluid Ah ea given by P dh-liquid gas must be the same in the tank (1) and in the dosing mechanism (3). Said equivalent head of liquid fluid must exceed the net positive suction head (hereinafter NPSH) of the pump (4).
  • NPSH net positive suction head
  • the height of liquid fluid in the dosing mechanism (3) is regulated by the third valve (7).
  • the device has:
  • a pressure transmitter (12) connected to the tank (1) above the liquid fluid level
  • a pressure transmitter (15) connected to the outlet of the sixth valve (10); a flow controller (16) with two inputs and one output, one input connected to the flow transmitter (16), the other input connected to the pressure transmitter (12) and the output connected to the first valve (5);
  • a level control (18) with two inputs and one output, one input connected to the pressure transmitter (12), the other input connected to the level transmitter (13) and the output connected to the sixth valve (10); Y
  • a pressure controller (19) with an inlet and outlet, the inlet connected to the pressure transmitter (15) and the outlet connected to the fifth valve (9).
  • the information taken from the flow transmitter (11) and the information taken from the pressure transmitter (12) are compared through a calculation that indicates to the flow controller (16) the opening level of the first valve (5).
  • the information taken from the pressure transmitter (12) and the information taken from the flow transmitter (13) are compared through a calculation that indicates to the level controller (18) the valve opening level (10) .
  • the pressure controller (17) varies the opening level of the second valve (6) to regulate the level of liquid fluid.
  • the level controller (20) regulates the opening level of the third valve (7) to control the level of substances dosed by the dosing mechanism (3).
  • the pressure controller (19) varies the opening level of the valve (9) to control the flow that is diverted to the dosing mechanism (3) through the return and control the pressure in the discharge line.
  • the first valve (5) is an automatic control valve.
  • the first valve (5) is a manual control valve.
  • the sixth valve (10) is an automatic control valve. In another embodiment not illustrated by the invention, the sixth valve (10) is a manual control valve.
  • homogeneous distribution means of liquid fluid are arranged inside the tank (1), for example, packed beds, perforated plates, stirrers and combinations of the above.
  • the tank (1) is selected from the group consisting of deaeration units, reactors, bioreactors, distillation towers and combinations of the above. Said selection depends on the conditioning process that is selected from the group consisting of deaeration, oxygenation, carbonation, heterogeneous catalysis and submission to an inert atmosphere.
  • the liquid fluid fluid is a pregnant solution composed of cyanide complexed gold between 0.5 and 10% v / v.
  • the liquid fluid is a detergent solution prior to the addition of the saponifying agent.
  • the liquid fluid is a solution of emulsion monomers prior to polymerization.
  • the liquid fluid is a solution that requires deodorization such as oils.
  • the liquid fluid is an aqueous solution prior to carbonation.
  • the liquid fluid is process water that requires treatment.
  • the pressure variator (2) is selected from the group consisting of vacuum ejectors, barometric pump legs and gas supply devices.
  • the pipe connecting the tank (1) with the pressure variator (2) is characterized in that the length to internal diameter ratio is between 1 and 100.
  • the variator Pressure (2) is connected to the tank (1) above the level of liquid fluid and a baffle is arranged between the tank (1) and the pressure variator (2) to prevent the entry of liquid fluid into the pressure variator .
  • the pressure variator (2) is a vacuum ejector.
  • the liquid fluid level of the tank (1) is regulated by a second valve (6) arranged at the inlet of the vacuum ejector.
  • the pipe is connected to the suction section of the vacuum ejector.
  • the dosing mechanism is used in the precipitation of pregnant solution from the Merrill Crowe process.
  • the tank (1) is an absorption tower with a height between 2 and 6m, diameter between 0.25 and 2m with a height / diameter ratio between 3 and 10.
  • the absorption tower has inside a packed bed loaded between the 20% and 60% of the total volume of the tower with means of homogeneous distribution of the liquid phase, for example, pall ring, raschig rings, and cylinders. Said packed bed with a specific length, defined by the relationship between the packing volume and the wet area, between 0.02 meters and 0.10m.
  • a space is disposed from the top of the packing and the top of the absorption tower between 0.5m and lm.
  • the packed bed is located inside the absorption tower at its bottom.
  • the liquid fluid is pregnant solution.
  • Said pregnant solution is entered into the absorption tower through a distribution shower that is located at the top of the absorption tower above the packed bed.
  • the pressure variator (2) is a vacuum ejector that generates a pressure between - 104 and -3 kpa to achieve an oxygen concentration in the pregnant solution of less than 2% w / w.
  • the pregnant solution is entered into the absorption tower through liquid fluid distribution means, such as diffusers to prevent flow grooving.
  • the second valve (6) is a manual control valve.
  • the second valve (6) is an automatic control valve.
  • the pressure variator (2) is a barometric leg caused by a vacuum pump.
  • the pressure of the tank (1) is regulated by the second valve (6) arranged in the suction of the vacuum pump.
  • the pipe is connected to the suction of the vacuum pump.
  • a flow control mechanism is provided in the pump (4), such as a speed variator (20).
  • the pressure variator (2) is a vacuum pump.
  • the pressure of the tank (1) is regulated by a variable speed drive arranged in the vacuum pump.
  • the pipe is connected to the suction of the vacuum pump.
  • the dosing device is used in a polymerization inhibition process in an emulsion polymerization process.
  • the tank (1) is a reactor with a height between 2 and 5m; a diameter between 2 and 10m; and a height / diameter ratio between 1 and 2.
  • the reactor is continuously stirred by means of agitation such as, for example, anchor, vane and propeller stirrers. Said stirring means rotate at a speed between 1 and 200rpm.
  • the pressure variator (2) is a pressurization mechanism such as, for example, a pressurized line that carries an inert gas such as nitrogen and maintains the oxygen concentration of less than 2% v / v.
  • Said pressurized line is connected to the pipe and in the pipe a second valve (6) is arranged to regulate the pressure in the reactor.
  • the pressure inside the reactor is maintained between 101 and 1,010 kpa.
  • the reactor has a temperature control mechanism such as coils through which a hot fluid passes. Said hot fluid is selected to maintain the reactor operating temperature between 30 and 120 ° C.
  • the vapors generated in the polymerization reaction carried out in the reactor pass through a condenser maintaining a reflux rate between 0 and 1 and are returned to the reactor at a temperature between 30 and 120 ° C.
  • a flow control mechanism such as a speed variator (20).
  • the inert gas is any suitable gas that does not adversely affect the polymerization reaction.
  • the tank (1) is a jacket reactor through which hot fluid is passed to heat the tank.
  • the hot fluid is, for example, water, air, steam and any other industrial service that is provided for heating.
  • the pressure variator (2) is a pressurized line that conducts a gas.
  • the pipe is connected to the pressurized line.
  • the pressure of the tank (1) is regulated by a second valve (6) arranged in the pipe.
  • the pressurized line conducts a reactive gas.
  • the pressurized line conducts an inert gas.
  • the pressurized line conducts a gas that is bubbled in the liquid phase of the tank (1).
  • the pressure variator (2) is a gas pump.
  • the pressure of the tank (1) is regulated by means of a speed variator arranged in the gas pump.
  • the pipe is connected to the pump discharge.
  • the pressure variator (2) generates vacuum and does so by any method known in the art.
  • the dosing mechanism (3) is a container that feeds substances at the outlet of the tank (1).
  • the fed substance is a precipitating agent.
  • the fed substance is a saponifying agent.
  • the fed substance is a polymerization inhibitor.
  • the fed substance is a bleaching agent, such as adsorbent clay.
  • the fed substance is a preservative.
  • the fed substance is a solution for oxygen capture.
  • the dosing mechanism (3) comprises a conical section with an angle between 10 and 90 ° measured from a plane perpendicular to the axis of revolution of the section.
  • the dosing mechanism (3) is a pressure vessel.
  • the fifth valve (9) is an automatic control valve.
  • the fifth valve (9) is a manual control valve.
  • the pump (4) is a centrifugal floor pump. In another embodiment of the invention, the pump (4) mixes the liquid fluid and the substances of the dosing mechanism (3).
  • the output of the process goes through filters where polymetallic precipitates are deposited.
  • the output of the process goes to packing tanks where surfactant products are stored.
  • the process exit goes to a packing line where aqueous base adhesives are stored.
  • the process outlet goes to a filter where bleaching agent is retained and the refined oil goes to a tank.
  • the output of the process goes to a carbonated beverage packaging line.
  • the process output goes to a power boiler.
  • the third valve (7) is an automatic control valve.
  • the third valve (7) is a manual control valve.
  • control of the dosing device is carried out through the steps taken by the following process: to. close the flow step between:
  • control process is performed automatically. In another embodiment not illustrated by the invention, it is performed manually.
  • a dosing device was designed and built to perform the gold precipitation process in a Merrill Crowe process.
  • the tank (1) corresponds to a deaeration tower
  • the pressure variator (2) corresponds to a barometric leg generated by a vacuum pump
  • the dosing mechanism (3) is a hopper
  • the pump (4) is a centrifugal floor pump.
  • the tank (1) is connected to a reservoir of pregnant solution through a line of
  • the tank (1) It has a height of 2.5m and is a 40-pipe tube made of carbon steel.
  • the connection between the pregnant solution tank and the tank (1) is 2.4m high. Inside the tank (1) 5 plates are arranged to homogeneously distribute the pregnant solution.
  • the level of pregnant solution is between 80 and 110cm.
  • the tank (1) has a level transmitter (13) that corresponds to a 30cm long viewfinder located between 80 and 110cm high. In the upper part of the tank (1) there is a glycerin pressure gauge to measure the pressure of the gas phase.
  • the pressure variator (2) consists of a single stage vacuum pump with a power of 1/4 Hp that reaches a pressure of -104 kpa.
  • the dosing mechanism (3) is a funnel formed of a cylindrical section 50 centimeters high and 16 "in diameter; and a conical section having a diameter greater than 16" and a diameter less than 3/4 ".
  • Dosing (3) is made of carbon steel and is at ambient pressure. The dosage is carried out by micro drip.
  • the pump (4) is a 1.5 Hp centrifugal pump. All valves are ball and are made of PVC. The return on the discharge line is 3/4 ". The control of all valves is manual.
  • the pregnant and dosed solution arrives at press filters from which samples are taken and reacted with a chromophone to verify that the gold is completely precipitated.

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Abstract

The present invention relates to a dispensing device comprising a tank, a pressure regulator, a dispensing mechanism and a pump. The tank is connected to a supply of liquid by means of a pipeline. The pressure regulator and the tank are connected by means of tubes. Connected to the tank is an outlet line having a discharge line connected to the dispensing mechanism. The suction side of the pump is connected to the outlet line, downstream of the discharge line. The discharge side of the pump is connected to a discharge line that exits the battery limits of the process and has a return to the dispensing mechanism.

Description

DISPOSITIVO DE DOSIFICACIÓN  DOSAGE DEVICE
Campo de la invención  Field of the Invention
El presente invento se relaciona con dispositivos de dosificación de fluidos, preferiblemente, dosificación de fluido(s) a otro(s) fluido(s). The present invention relates to fluid dosing devices, preferably, dosing fluid (s) to other fluid (s).
Descripción del estado de la técnica Description of the state of the art
En el estado de la técnica se encuentran documentos que divulgan dispositivos de dosificación como el documento WO2014090260A1, que divulga un circuito de precipitación de zinc que comprende un recipiente configurado para llevar una solución preñada con metales preciosos disueltos. El recipiente incluye medios de suministro de partículas de zinc. El circuito también tiene un filtro de precipitación (para separaciones sólido- sólido) ubicado aguas abajo del recipiente; y al menos un clasificador (v.g. hidrociclones, mesas vibratorias) que separa partículas de zinc de otros precipitados de la solución preñada filtrada (clarificada). El clasificador se dispone aguas arriba del filtro de precipitación y aguas abajo del recipiente. Adicionalmente el circuito comprende una corriente de reciclo con medios de suministro (v.g. transportadores húmedos, tuberías con bombas para lodos, y/o tolvas) configurada para entregar al recipiente las partículas de zinc que se separan en el clasificador. El documento indica que un objetivo de la invención es reducir el tamaño global de una planta de operaciones tipo Merrill-Crowe. Además, el documento divulga una columna de desaireación que opera en condiciones de vacío, del fondo de la columna de desaireación sale la solución preñada desaireada. Además, en la figura 4 del documento se aprecia una bomba de vacío conectada encima de la torre de desaireación, y un tanque con solución preñada clarificada conectado mediante una tubería y una bomba a la torre de desaireación. Adicionalmente el documento divulga bombas conectadas mediante tubería al clasificador y a un tanque de solución estéril (fracción líquida que sale del clasificador). El documento muestra un dispositivo que en su configuración requiere una bomba antes de la torre de deaireación para generar un flujo hacia el mismo tanque y una bomba entre la torre de deaireación y el tanque de clarificación para lograr la precipitación de metales. Dicha configuración implica altos costos en el mantenimiento y funcionamiento de la planta. Breve descripción del invento In the state of the art are documents that disclose dosing devices such as WO2014090260A1, which discloses a zinc precipitation circuit comprising a container configured to carry a pregnant solution with dissolved precious metals. The container includes means for supplying zinc particles. The circuit also has a precipitation filter (for solid-solid separations) located downstream of the vessel; and at least one classifier (eg hydrocyclones, vibrating tables) that separates zinc particles from other precipitates from the filtered (clarified) pregnant solution. The classifier is arranged upstream of the precipitation filter and downstream of the vessel. Additionally, the circuit comprises a recycle stream with supply means (eg wet conveyors, sludge pump pipes, and / or hoppers) configured to deliver the zinc particles that are separated in the classifier to the container. The document indicates that an objective of the invention is to reduce the overall size of a Merrill-Crowe type operating plant. In addition, the document discloses a deaeration column operating under vacuum conditions, the deaerated pregnant solution comes out of the bottom of the deaeration column. In addition, a vacuum pump connected above the deaeration tower is shown in Figure 4 of the document, and a tank with clarified pregnant solution connected by a pipe and a pump to the deaeration tower. Additionally, the document discloses pumps connected by pipeline to the classifier and to a sterile solution tank (liquid fraction leaving the classifier). The document shows a device that in its configuration requires a pump before the deaeration tower to generate a flow to the same tank and a pump between the deaeration tower and the clarification tank to achieve the precipitation of metals. This configuration implies high costs in the maintenance and operation of the plant. Brief Description of the Invention
La presente invención corresponde a un dispositivo de dosificación que comprende un tanque, un variador de presión, un mecanismo de dosificación y una bomba. El tanque se conecta a un suministro de fluido líquido mediante una línea de conducción. El variador de presión y el tanque se conectan mediante una tubería. Al tanque se conecta a una línea de salida que tiene un desglose que se conecta al mecanismo de dosificación. La succión de la bomba se conecta a la línea de salida aguas abajo del desglose. La descarga de la bomba se conecta a una línea de descarga que sale de los límites de batería del proceso y que tiene un retorno al mecanismo de dosificación. La presión en la succión de la bomba y la presión dada por el variador de presión provocan un flujo desde el tanque y el mecanismo de dosificación a través de la bomba. The present invention corresponds to a dosing device comprising a tank, a pressure variator, a dosing mechanism and a pump. The tank is connected to a liquid fluid supply through a conduction line. The pressure variator and the tank are connected by a pipe. The tank is connected to an outlet line that has a breakdown that connects to the dosing mechanism. The pump suction is connected to the outlet line downstream of the breakdown. The discharge of the pump is connected to a discharge line that leaves the battery limits of the process and has a return to the dosing mechanism. The pressure in the pump suction and the pressure given by the pressure variator cause a flow from the tank and the dosing mechanism through the pump.
Breve descripción de las figuras Brief description of the figures
FIG.1 corresponde al dispositivo de dosificación. FIG.1 corresponds to the dosing device.
FIG.2 corresponde a una modalidad del dispositivo de dosificación donde el variador de presión es un eyector de vacío. FIG.2 corresponds to an embodiment of the dosing device where the pressure variator is a vacuum ejector.
FIG.3 corresponde a una modalidad del dispositivo de dosificación donde el variador de presión es una pierna barométrica. FIG.3 corresponds to an embodiment of the dosing device where the pressure variator is a barometric leg.
FIG.4 corresponde a una modalidad del dispositivo de dosificación aplicado a un proceso de polimerización por emulsión. FIG.4 corresponds to an embodiment of the dosing device applied to an emulsion polymerization process.
Descripción detallada del invento Detailed Description of the Invention
Haciendo referencia a la FIG. 1, la presente invención corresponde a un dispositivo de dosificación que comprende: un tanque (1) con una entrada, una salida y una conexión, la primera entrada se conecta a un suministro de un fluido líquido mediante una línea de conducción, no ilustrado, y la salida se conecta a una línea de salida; Referring to FIG. 1, the present invention corresponds to a dosing device comprising: a tank (1) with an inlet, an outlet and a connection, the first inlet is connected to a supply of a liquid fluid by a conduction line, not illustrated, and the outlet is connected to an outlet line;
un variador de presión (2) conectado a la conexión del tanque (1) mediante una tubería;  a pressure variator (2) connected to the tank connection (1) by means of a pipe;
una bomba (4) con una succión y una descarga, la succión se conecta a la línea de salida;  a pump (4) with a suction and a discharge, the suction is connected to the outlet line;
un mecanismo de dosificación (3) con una entrada y una salida, el mecanismo de dosificación (3) se carga con sustancias y la salida se conecta a un desglose de la línea de salida entre el tanque (1) y la bomba (4); y  a dosing mechanism (3) with an inlet and outlet, the dosing mechanism (3) is loaded with substances and the outlet is connected to a breakdown of the outlet line between the tank (1) and the pump (4) ; Y
una línea de descarga con un retorno a la entrada del mecanismo de dosificación (3), la línea de descarga se conecta a la descarga de la bomba (4); donde la bomba (4) y el variador de presión (2) provocan un flujo del fluido líquido desde el tanque (1) y el mecanismo de dosificación (3) a través de la bomba (4).  a discharge line with a return to the input of the dosing mechanism (3), the discharge line is connected to the discharge of the pump (4); where the pump (4) and the pressure variator (2) cause a flow of liquid fluid from the tank (1) and the dosing mechanism (3) through the pump (4).
Haciendo referencia a la FIG. 1, el tanque (1) recibe y almacena un fluido líquido a una presión diferente a la presión ambiental. El fluido líquido proviene de diversas fuentes como carrotanques, otros tanques y otras fuentes de fluido líquido. Dicho fluido líquido requiere de un proceso de dosificación posterior. Referring to FIG. 1, the tank (1) receives and stores a liquid fluid at a pressure different from the ambient pressure. Liquid fluid comes from various sources such as tank trucks, other tanks and other sources of liquid fluid. Said liquid fluid requires a subsequent dosing process.
Haciendo referencia a la FIG. 1, el fluido líquido ingresa al tanque (1) mediante la línea de conducción. Entre el tanque (1) y el suministro de fluido líquido, sobre la línea de conducción, se dispone una primera válvula (5) para regular el flujo de entrada del fluido líquido al tanque (1). En la línea de conducción se disponen medios de dispersión como, por ejemplo, duchas, difusores, tuberías perforadas y combinaciones de los anteriores. La presión del fluido líquido dentro de la línea de conducción es mayor que la presión en la fase gaseosa del fluido liquido en el tanque (1). En el tanque (1) se realiza un proceso de variación de presión (en adelante, proceso de acondicionamiento) al fluido líquido. El tanque (1) y el variador de presión (2) se conectan mediante la tubería. El variador de presión (2) acondiciona el fluido líquido en el tanque (1). Entre el tanque (1) y el variador de presión (2), en la tubería se dispone una segunda válvula (6) para controlar el nivel del fluido líquido. Al tanque (1) se conecta una línea de salida que se dispone para permitir la salida de fluido líquido. El mecanismo de dosificación (3) se carga con sustancias requeridas para el proceso del fluido líquido y se conecta a un desglose de la línea de salida. En el desglose de la línea de salida se dispone una tercera válvula (7) que regula el nivel del mecanismo de dosificación (3). Posterior al desglose, se conecta la bomba (4) a la línea de salida. En la succión de la bomba (4) se dispone una cuarta válvula (8) que impide el flujo a través de la bomba (4) cuando no está encendida. La bomba (4) es una bomba centrífuga que succiona del tanque (1) y del mecanismo de dosificación (3). La descarga de la bomba (4) se conecta con una línea de descarga que tiene una línea de retorno al mecanismo de dosificación (3) para prevenir sobrepresión de la línea de descarga. En el retorno se dispone una quinta válvula (9) para controlar el flujo de la línea de descarga hacia el mecanismo de dosificación (3). La línea de descarga de la bomba (4) cuenta también con una salida del proceso sobre la que se dispone una sexta válvula (10) que regula el nivel de fluido líquido del tanque (1). El efecto de la bomba (4) y el variador de presión (3) provocan un flujo desde el tanque (1) y el mecanismo de dosificación (3). Referring to FIG. 1, the liquid fluid enters the tank (1) through the conduction line. Between the tank (1) and the liquid fluid supply, on the conduction line, a first valve (5) is arranged to regulate the flow of liquid fluid into the tank (1). Dispersion means are arranged in the conduction line, such as showers, diffusers, perforated pipes and combinations of the above. The pressure of the liquid fluid inside the conduction line is greater than the pressure in the gas phase of the liquid fluid in the tank (1). In the tank (1) a pressure variation process (hereinafter, conditioning process) is carried out to the liquid fluid. The tank (1) and the pressure variator (2) are connected by the pipe. The pressure variator (2) conditions the liquid fluid in the tank (1). Between the tank (1) and the pressure variator (2), a second valve (6) is arranged in the pipeline to control the level of the liquid fluid. An outlet line is connected to the tank (1) which is arranged to allow the exit of liquid fluid. The dosing mechanism (3) is loaded with substances required for the liquid fluid process and is connected to a breakdown of the outlet line. In the breakdown of the output line there is a third valve (7) that regulates the level of the dosing mechanism (3). After the breakdown, the pump (4) is connected to the output line. In the suction of the pump (4) there is a fourth valve (8) that prevents the flow through the pump (4) when it is not on. The pump (4) is a centrifugal pump that sucks from the tank (1) and the dosing mechanism (3). The discharge of the pump (4) is connected to a discharge line that has a return line to the dosing mechanism (3) to prevent overpressure of the discharge line. On the return, a fifth valve (9) is arranged to control the flow of the discharge line to the dosing mechanism (3). The discharge line of the pump (4) also has an exit from the process on which a sixth valve (10) that regulates the liquid fluid level of the tank (1) is arranged. The effect of the pump (4) and the pressure variator (3) causes a flow from the tank (1) and the dosing mechanism (3).
La cabeza equivalente de fluido líquido Ahea dada por
Figure imgf000006_0001
gas P dh-líquido debe ser igual en el tanque (1) y en el mecanismo de dosificación (3). Dicha cabeza equivalente de fluido líquido debe superar la cabeza neta de succión positiva (en adelante NPSH, por sus siglas en inglés) de la bomba (4). La altura de fluido líquido en el mecanismo de dosificación (3) es regulada mediante la tercera válvula (7). The equivalent head of liquid fluid Ah ea given by
Figure imgf000006_0001
P dh-liquid gas must be the same in the tank (1) and in the dosing mechanism (3). Said equivalent head of liquid fluid must exceed the net positive suction head (hereinafter NPSH) of the pump (4). The height of liquid fluid in the dosing mechanism (3) is regulated by the third valve (7).
Haciendo referencia a la FIG. 1, en una modalidad de la invención, el dispositivo cuenta con: Referring to FIG. 1, in one embodiment of the invention, the device has:
un transmisor de flujo (11) a la salida de la válvula (5);  a flow transmitter (11) at the outlet of the valve (5);
un transmisor de presión (12) conectado al tanque (1) por encima del nivel de fluido líquido;  a pressure transmitter (12) connected to the tank (1) above the liquid fluid level;
un transmisor de nivel (13) conectado al tanque (1);  a level transmitter (13) connected to the tank (1);
un control de nivel (14) conectado al mecanismo de dosificación (3);  a level control (14) connected to the dosing mechanism (3);
un transmisor de presión (15) conectado a la salida de la sexta válvula (10); un controlador de flujo (16) con dos entradas y una salida, una entrada conectada al transmisor de flujo (16), la otra entrada conectada al transmisor de presión (12) y la salida conectada a la primera válvula (5); a pressure transmitter (15) connected to the outlet of the sixth valve (10); a flow controller (16) with two inputs and one output, one input connected to the flow transmitter (16), the other input connected to the pressure transmitter (12) and the output connected to the first valve (5);
un controlador de presión (17) con una entrada y una salida, la entrada conectada al transmisor de presión (12) y la salida conectada a la segunda válvula (6);  a pressure controller (17) with an inlet and outlet, the inlet connected to the pressure transmitter (12) and the outlet connected to the second valve (6);
un control de nivel (18) con dos entradas y una salida, una entrada conectada al transmisor de presión (12), la otra entrada conectada al transmisor de nivel (13) y la salida conectada a la sexta válvula (10); y  a level control (18) with two inputs and one output, one input connected to the pressure transmitter (12), the other input connected to the level transmitter (13) and the output connected to the sixth valve (10); Y
un controlador de presión (19) con una entrada y una salida, la entrada conectada al transmisor de presión (15) y la salida conectada a la quinta válvula (9).  a pressure controller (19) with an inlet and outlet, the inlet connected to the pressure transmitter (15) and the outlet connected to the fifth valve (9).
En esta modalidad de la invención, la información tomada del transmisor de flujo (11) y la información tomada del transmisor de presión (12) se comparan a través de un cálculo que le indica al controlador de flujo (16) el nivel de apertura de la primera válvula (5). Además, la información tomada del transmisor de presión (12) y la información tomada del transmisor de flujo (13) se comparan a través de un cálculo que le indica al controlador de nivel (18) el nivel de apertura de la válvula (10). El controlador de presión (17) varía el nivel de apertura de la segunda válvula (6) para regular el nivel de fluido líquido. El controlador de nivel (20) regula el nivel de apertura de la tercera válvula (7) para controlar el nivel de sustancias dosificadas por el mecanismo de dosificación (3). El controlador de presión (19) varía el nivel de apertura de la válvula (9) para controlar el flujo que se desvía hacia el mecanismo de dosificación (3) a través del retorno y controlar la presión en la línea de descarga. In this embodiment of the invention, the information taken from the flow transmitter (11) and the information taken from the pressure transmitter (12) are compared through a calculation that indicates to the flow controller (16) the opening level of the first valve (5). In addition, the information taken from the pressure transmitter (12) and the information taken from the flow transmitter (13) are compared through a calculation that indicates to the level controller (18) the valve opening level (10) . The pressure controller (17) varies the opening level of the second valve (6) to regulate the level of liquid fluid. The level controller (20) regulates the opening level of the third valve (7) to control the level of substances dosed by the dosing mechanism (3). The pressure controller (19) varies the opening level of the valve (9) to control the flow that is diverted to the dosing mechanism (3) through the return and control the pressure in the discharge line.
En una modalidad no ilustrada de la invención, la primera válvula (5) es una válvula de control automático. In a non-illustrated embodiment of the invention, the first valve (5) is an automatic control valve.
En otra modalidad no ilustrada de la invención, la primera válvula (5) es una válvula de control manual. In another embodiment not illustrated by the invention, the first valve (5) is a manual control valve.
En una modalidad no ilustrada de la invención, la sexta válvula (10) es una válvula de control automático. En otra modalidad no ilustrada de la invención, la sexta válvula (10) es una válvula de control manual. In a non-illustrated embodiment of the invention, the sixth valve (10) is an automatic control valve. In another embodiment not illustrated by the invention, the sixth valve (10) is a manual control valve.
En una modalidad no ilustrada de la invención, al interior del tanque (1) se disponen medios de distribución homogénea de fluido líquido como, por ejemplo, lechos empacados, platos perforados, agitadores y combinaciones de los anteriores. In a non-illustrated embodiment of the invention, homogeneous distribution means of liquid fluid are arranged inside the tank (1), for example, packed beds, perforated plates, stirrers and combinations of the above.
El tanque (1) se selecciona del grupo compuesto por unidades de deaireación, reactores, biorreactores, torres de destilación y combinaciones de los anteriores. Dicha selección depende del proceso de acondicionamiento que se selecciona del grupo compuesto por deaireación, oxigenación, carbonatación, catálisis heterogénea y sometimiento a una atmósfera inerte. The tank (1) is selected from the group consisting of deaeration units, reactors, bioreactors, distillation towers and combinations of the above. Said selection depends on the conditioning process that is selected from the group consisting of deaeration, oxygenation, carbonation, heterogeneous catalysis and submission to an inert atmosphere.
En una modalidad no ilustrada de la invención, el fluido fluido líquido es una solución preñada compuesta de oro acomplejado con cianuro entre 0,5 y 10% v/v. En otra modalidad de la invención, el fluido líquido es una solución detergente previo a la adición del agente saponificante. En otra modalidad de la invención, el fluido líquido es una solución de monómeros en emulsión previo a la polimerización. En otra modalidad de la invención, el fluido líquido es una solución que requiere desodorización como, por ejemplo, aceites. En otra modalidad de la invención, el fluido líquido es una solución acuosa previo a la carbonatación. En otra modalidad de la invención, el fluido líquido es agua de proceso que requiere tratamiento. In a non-illustrated embodiment of the invention, the liquid fluid fluid is a pregnant solution composed of cyanide complexed gold between 0.5 and 10% v / v. In another embodiment of the invention, the liquid fluid is a detergent solution prior to the addition of the saponifying agent. In another embodiment of the invention, the liquid fluid is a solution of emulsion monomers prior to polymerization. In another embodiment of the invention, the liquid fluid is a solution that requires deodorization such as oils. In another embodiment of the invention, the liquid fluid is an aqueous solution prior to carbonation. In another embodiment of the invention, the liquid fluid is process water that requires treatment.
El variador de presión (2) se selecciona del grupo compuesto por eyectores de vacío, piernas barométricas de bombas y dispositivos de suministros de gas. The pressure variator (2) is selected from the group consisting of vacuum ejectors, barometric pump legs and gas supply devices.
En una modalidad no ilustrada de la invención, la tubería que conecta al tanque (1) con el variador de presión (2) se caracteriza porque la relación longitud a diámetro interno está entre 1 y 100. En otra modalidad de la invención, el variador de presión (2) se conecta al tanque (1) por encima del nivel de fluido líquido y se dispone un bafle deflector entre el tanque (1) y el variador de presión (2) para prevenir el ingreso de fluido líquido al variador de presión. Haciendo referencia a la FIG. 2, en una modalidad de la invención, el variador de presión (2) es un eyector de vacío. El nivel de fluido líquido del tanque (1) es regulada mediante una segunda válvula (6) dispuesta a la entrada del eyector de vacío. La tubería se conecta a la sección de aspiración del eyector de vacío. In a non-illustrated embodiment of the invention, the pipe connecting the tank (1) with the pressure variator (2) is characterized in that the length to internal diameter ratio is between 1 and 100. In another embodiment of the invention, the variator Pressure (2) is connected to the tank (1) above the level of liquid fluid and a baffle is arranged between the tank (1) and the pressure variator (2) to prevent the entry of liquid fluid into the pressure variator . Referring to FIG. 2, in one embodiment of the invention, the pressure variator (2) is a vacuum ejector. The liquid fluid level of the tank (1) is regulated by a second valve (6) arranged at the inlet of the vacuum ejector. The pipe is connected to the suction section of the vacuum ejector.
Haciendo referencia a la FIG. 2, en una modalidad de la invención, el mecanismo de dosificación se utiliza en la precipitación de solución preñada del proceso de Merrill Crowe. El tanque (1) es una torre de absorción con una altura entre 2 y 6m, diámetro entre 0,25 y 2m con una relación altura/diámetro entre 3 y 10. La torre de absorción tiene en su interior un lecho empacado cargado entre el 20% y 60% del volumen total de la torre con medios de distribución homogénea de la fase líquida como, por ejemplo, anillo pall, anillos raschig, y cilindros. Dicho lecho empacado con una longitud específica, definida por la relación entre el volumen de empaque y el área mojada, entre 0,02 metros y 0,10m. Se dispone un espacio desde la parte superior del empaque y la parte superior de la torre de absorción entre 0,5m y lm. El lecho empacado se ubica al interior de la torre de absorción en su parte inferior. El fluido líquido es solución preñada. Dicha solución preñada se ingresa a la torre de absorción a través de una ducha de distribución que se ubica en la parte superior de la torre de absorción por encima del lecho empacado. El variador de presión (2) es un eyector de vacío que genera una presión entre - 104 y -3 kpa para lograr una concentración de oxígeno en la solución preñada menor al 2% p/p. Referring to FIG. 2, in one embodiment of the invention, the dosing mechanism is used in the precipitation of pregnant solution from the Merrill Crowe process. The tank (1) is an absorption tower with a height between 2 and 6m, diameter between 0.25 and 2m with a height / diameter ratio between 3 and 10. The absorption tower has inside a packed bed loaded between the 20% and 60% of the total volume of the tower with means of homogeneous distribution of the liquid phase, for example, pall ring, raschig rings, and cylinders. Said packed bed with a specific length, defined by the relationship between the packing volume and the wet area, between 0.02 meters and 0.10m. A space is disposed from the top of the packing and the top of the absorption tower between 0.5m and lm. The packed bed is located inside the absorption tower at its bottom. The liquid fluid is pregnant solution. Said pregnant solution is entered into the absorption tower through a distribution shower that is located at the top of the absorption tower above the packed bed. The pressure variator (2) is a vacuum ejector that generates a pressure between - 104 and -3 kpa to achieve an oxygen concentration in the pregnant solution of less than 2% w / w.
En una modalidad no ilustrada de la invención, la solución preñada se ingresa a la torre de absorción a través medios de distribución de fluido líquido como, por ejemplo, difusores para evitar el acanalamiento del flujo. In a non-illustrated embodiment of the invention, the pregnant solution is entered into the absorption tower through liquid fluid distribution means, such as diffusers to prevent flow grooving.
En una modalidad no ilustrada de la invención, la segunda válvula (6) es una válvula de control manual. In a non-illustrated embodiment of the invention, the second valve (6) is a manual control valve.
En una modalidad no ilustrada de la invención, la segunda válvula (6) es una válvula de control automático. In a non-illustrated embodiment of the invention, the second valve (6) is an automatic control valve.
Haciendo referencia a la FIG 3, en una modalidad de la invención, el variador de presión (2) es una pierna barométrica causada por una bomba de vacío. La presión del tanque (1) es regulada mediante la segunda válvula (6) dispuesta en la succión de la bomba de vacío. La tubería se conecta a la succión de la bomba de vacío. En una modalidad de la invención, en la bomba (4) se dispone un mecanismo de control de flujo como, por ejemplo, un variador de velocidad (20). Referring to FIG 3, in one embodiment of the invention, the pressure variator (2) is a barometric leg caused by a vacuum pump. The pressure of the tank (1) is regulated by the second valve (6) arranged in the suction of the vacuum pump. The pipe is connected to the suction of the vacuum pump. In one embodiment of the invention, a flow control mechanism is provided in the pump (4), such as a speed variator (20).
En una modalidad no ilustrada de la invención, el variador de presión (2) es una bomba de vacío. La presión del tanque (1) es regulada mediante un variador de velocidad dispuesto en la bomba de vacío. La tubería se conecta a la succión de la bomba de vacío. In a non-illustrated embodiment of the invention, the pressure variator (2) is a vacuum pump. The pressure of the tank (1) is regulated by a variable speed drive arranged in the vacuum pump. The pipe is connected to the suction of the vacuum pump.
Haciendo referencia a la FIG. 4, en una modalidad de la invención, el dispositivo de dosificación se utiliza en un proceso de inhibición de la polimerización en un proceso de polimerización por emulsión. El tanque (1) es un reactor con una altura entre 2 y 5m; un diámetro entre 2 y 10m; y una relación altura/diámetro entre 1 y 2. El reactor es continuamente agitado mediante medios de agitación como, por ejemplo, agitadores de anclas, de paletas y de propela. Dichos medios de agitación giran a una velocidad entre 1 y 200rpm. El variador de presión (2) es un mecanismo de presurización como, por ejemplo, una línea presurizada que transporta un gas inerte como, por ejemplo, nitrógeno y mantiene la concentración de oxígeno menor a 2% v/v. Dicha línea presurizada se conecta a la tubería y en la tubería se dispone una segunda válvula (6) para regular la presión en el reactor. La presión al interior del reactor se mantiene entre 101 y 1.010 kpa. El reactor tiene un mecanismo de control de temperatura como, por ejemplo, serpentines por los que pasa un fluido caliente. Dicho fluido caliente se selecciona para mantener la temperatura de operación del reactor entre 30 y 120°C. Los vapores generados en la reacción de polimerización que se lleva a cabo en el reactor pasan por un condensador manteniendo una tasa de reflujo entre 0 y 1 y se retornan al reactor a una temperatura entre 30 y 120°C. En la bomba (4) se dispone un mecanismo de control de flujo como, por ejemplo, un variador de velocidad (20). Referring to FIG. 4, in one embodiment of the invention, the dosing device is used in a polymerization inhibition process in an emulsion polymerization process. The tank (1) is a reactor with a height between 2 and 5m; a diameter between 2 and 10m; and a height / diameter ratio between 1 and 2. The reactor is continuously stirred by means of agitation such as, for example, anchor, vane and propeller stirrers. Said stirring means rotate at a speed between 1 and 200rpm. The pressure variator (2) is a pressurization mechanism such as, for example, a pressurized line that carries an inert gas such as nitrogen and maintains the oxygen concentration of less than 2% v / v. Said pressurized line is connected to the pipe and in the pipe a second valve (6) is arranged to regulate the pressure in the reactor. The pressure inside the reactor is maintained between 101 and 1,010 kpa. The reactor has a temperature control mechanism such as coils through which a hot fluid passes. Said hot fluid is selected to maintain the reactor operating temperature between 30 and 120 ° C. The vapors generated in the polymerization reaction carried out in the reactor pass through a condenser maintaining a reflux rate between 0 and 1 and are returned to the reactor at a temperature between 30 and 120 ° C. In the pump (4) there is a flow control mechanism, such as a speed variator (20).
En una modalidad no ilustrada de la invención, el gas inerte es cualquier gas apropiado que no afecte negativamente la reacción de polimerización. In a non-illustrated embodiment of the invention, the inert gas is any suitable gas that does not adversely affect the polymerization reaction.
En una modalidad no ilustrada de la invención, el tanque (1) es un reactor con chaqueta a través de la cual se pasa fluido caliente para calentar el tanque. En una modalidad no ilustrada de la invención, el fluido caliente es, por ejemplo, agua, aire, vapor y cualquier otro servicio industrial que se preste para calentar. In a non-illustrated embodiment of the invention, the tank (1) is a jacket reactor through which hot fluid is passed to heat the tank. In a non-illustrated embodiment of the invention, the hot fluid is, for example, water, air, steam and any other industrial service that is provided for heating.
En otra modalidad no ilustrada de la invención, el variador de presión (2) es una línea presurizada que conduce un gas. La tubería se conecta a la línea presurizada. La presión del tanque (1) es regulada mediante una segunda válvula (6) dispuesta en la tubería. In another embodiment not illustrated by the invention, the pressure variator (2) is a pressurized line that conducts a gas. The pipe is connected to the pressurized line. The pressure of the tank (1) is regulated by a second valve (6) arranged in the pipe.
En otra modalidad no ilustrada de la invención, la línea presurizada conduce un gas reactivo. In another embodiment not illustrated of the invention, the pressurized line conducts a reactive gas.
En otra modalidad no ilustrada de la invención, la línea presurizada conduce un gas inerte. In another embodiment not illustrated of the invention, the pressurized line conducts an inert gas.
En otra modalidad no ilustrada de la invención, la línea presurizada conduce un gas que se burbujea en la fase líquida del tanque (1). In another non-illustrated embodiment of the invention, the pressurized line conducts a gas that is bubbled in the liquid phase of the tank (1).
En una modalidad no ilustrada de la invención, el variador de presión (2) es una bomba de gas. La presión del tanque (1) es regulada mediante un variador de velocidad dispuesto en la bomba de gas. La tubería se conecta a la descarga de la bomba. In a non-illustrated embodiment of the invention, the pressure variator (2) is a gas pump. The pressure of the tank (1) is regulated by means of a speed variator arranged in the gas pump. The pipe is connected to the pump discharge.
En una modalidad no ilustrada de la invención, el variador de presión (2) genera vacío y lo hace mediante cualquier método conocido en la técnica. In a non-illustrated embodiment of the invention, the pressure variator (2) generates vacuum and does so by any method known in the art.
El mecanismo de dosificación (3) es un recipiente que alimenta sustancias a la salida del tanque (1). The dosing mechanism (3) is a container that feeds substances at the outlet of the tank (1).
En una modalidad no ilustrada de la invención, la sustancia alimentada es un agente precipitante. En otra modalidad de la invención, la sustancia alimentada es un agente saponificante. En otra modalidad de la invención, la sustancia alimentada es un inhibidor de polimerización. En otra modalidad de la invención, la sustancia alimentada es un agente blanqueador como, por ejemplo, arcilla adsorbente. En otra modalidad de la invención, la sustancia alimentada es un preservante. En otra modalidad de la invención, la sustancia alimentada es una solución para captura de oxígeno. En una modalidad de la invención, el mecanismo de dosificación (3) comprende una sección cónica con un ángulo entre 10 y 90° medido desde un plano perpendicular al eje de revolución de la sección. In a non-illustrated embodiment of the invention, the fed substance is a precipitating agent. In another embodiment of the invention, the fed substance is a saponifying agent. In another embodiment of the invention, the fed substance is a polymerization inhibitor. In another embodiment of the invention, the fed substance is a bleaching agent, such as adsorbent clay. In another embodiment of the invention, the fed substance is a preservative. In another embodiment of the invention, the fed substance is a solution for oxygen capture. In one embodiment of the invention, the dosing mechanism (3) comprises a conical section with an angle between 10 and 90 ° measured from a plane perpendicular to the axis of revolution of the section.
En otra modalidad no ilustrada de la invención, el mecanismo de dosificación (3) es un recipiente a presión. In another embodiment not illustrated by the invention, the dosing mechanism (3) is a pressure vessel.
En una modalidad no ilustrada de la invención, la quinta válvula (9) es una válvula de control automático. In a non-illustrated embodiment of the invention, the fifth valve (9) is an automatic control valve.
En una modalidad no ilustrada de la invención, la quinta válvula (9) es una válvula de control manual. In a non-illustrated embodiment of the invention, the fifth valve (9) is a manual control valve.
En una modalidad de la invención, la bomba (4) es una bomba centrífuga de piso. En otra modalidad de la invención, la bomba (4) mezcla el fluido líquido y las sustancias del mecanismo de dosificación (3). In one embodiment of the invention, the pump (4) is a centrifugal floor pump. In another embodiment of the invention, the pump (4) mixes the liquid fluid and the substances of the dosing mechanism (3).
En una modalidad no ilustrada de la invención, la salida del proceso va unos filtros donde se depositan precipitados polimetálicos. En otra modalidad de la invención, la salida del proceso va a unos tanques de empacado donde se almacena productos tensoactivos. En otra modalidad de la invención, la salida del proceso va a una línea de empaque donde se almacena adhesivos base acuosa. En otra modalidad de la invención, la salida del proceso va a un filtro donde se retiene agente blanqueador y el aceite refinado va a un tanque. En otra modalidad de la invención, la salida del proceso va a una línea de envasado de bebidas carbonatadas. En otra modalidad de la invención, la salida del proceso va a una caldera de potencia. In a non-illustrated embodiment of the invention, the output of the process goes through filters where polymetallic precipitates are deposited. In another embodiment of the invention, the output of the process goes to packing tanks where surfactant products are stored. In another embodiment of the invention, the process exit goes to a packing line where aqueous base adhesives are stored. In another embodiment of the invention, the process outlet goes to a filter where bleaching agent is retained and the refined oil goes to a tank. In another embodiment of the invention, the output of the process goes to a carbonated beverage packaging line. In another embodiment of the invention, the process output goes to a power boiler.
En una modalidad de la invención, la tercera válvula (7) es una válvula de control automático. In one embodiment of the invention, the third valve (7) is an automatic control valve.
En otra modalidad de la invención, la tercera válvula (7) es una válvula de control manual. In another embodiment of the invention, the third valve (7) is a manual control valve.
En una modalidad no ilustrada de la invención, el control del dispositivo de dosificación se realiza a través de los pasos dados por el siguiente proceso: a. cerrar el paso de flujo entre: In a non-illustrated embodiment of the invention, the control of the dosing device is carried out through the steps taken by the following process: to. close the flow step between:
el suministro de fluido líquido y el tanque (1), cerrando la primera válvula the liquid fluid supply and the tank (1), closing the first valve
(i); (i);
el tanque (1) y el variador de presión (2), cerrando la segunda válvula (2); el tanque (1) y el mecanismo de dosificación (3), cerrando la tercera válvula (7);  the tank (1) and the pressure variator (2), closing the second valve (2); the tank (1) and the dosing mechanism (3), closing the third valve (7);
el tanque (1), el mecanismo de dosificación (3) y la bomba (4), cerrando la cuarta válvula (8);  the tank (1), the dosing mechanism (3) and the pump (4), closing the fourth valve (8);
la bomba (4) y el retorno al mecanismo de dosificación, cerrando la quinta válvula (9); y  the pump (4) and the return to the dosing mechanism, closing the fifth valve (9); Y
la bomba (4) y el límite de batería, cerrando la sexta válvula (10);  the pump (4) and the battery limit, closing the sixth valve (10);
b. encender el variador de presión (2); b. turn on the pressure variator (2);
c. abrir el paso de flujo entre el tanque (1) y el variador de presión (2), abriendo la segunda válvula (6); C. open the flow passage between the tank (1) and the pressure variator (2), opening the second valve (6);
d. abrir el paso de flujo entre el suministro de fluido líquido y el tanque (1), abriendo la primera válvula (5), una vez que se obtenga la presión adecuada en el tanque; e. abrir el paso de flujo entre el tanque (1) y el mecanismo de dosificación (3), abriendo la tercera válvula (7); d. open the flow passage between the liquid fluid supply and the tank (1), opening the first valve (5), once the proper pressure in the tank is obtained; and. open the flow passage between the tank (1) and the dosing mechanism (3), opening the third valve (7);
f. abrir el paso de flujo entre el tanque (1), el mecanismo de dosificación (3) y la bomba (4), abriendo la cuarta válvula (8); F. open the flow passage between the tank (1), the dosing mechanism (3) and the pump (4), opening the fourth valve (8);
g. encender la bomba (4); g. turn on the pump (4);
h. abrir el paso de flujo entre la bomba (4) y el límite de batería, abriendo la sexta válvula (10); h. open the flow path between the pump (4) and the battery limit, opening the sixth valve (10);
i. abrir el paso de flujo entre la bomba (4) y el retorno al mecanismo de dosificacióni. open the flow path between the pump (4) and the return to the dosing mechanism
(3); y (3); Y
j. dosificar químicos en el mecanismo de dosificación (3). j. Dosing chemicals in the dosing mechanism (3).
En una modalidad no ilustrada de la invención, dicho proceso de control se realiza de manera automática. En otra modalidad no ilustrada de la invención, se realiza de manera manual. In a non-illustrated embodiment of the invention, said control process is performed automatically. In another embodiment not illustrated by the invention, it is performed manually.
Ejemplo: dispositivo de dosificación en el proceso de precipitación de complejos cianoauríferos y cianoargentíferos por la vía de Merrill-Crowe. Se diseñó y construyó un dispositivo de dosificación para realizar el proceso de precipitación del oro en un proceso de Merrill Crowe. Haciendo referencia a la FIG. 3, en dicho dispositivo de dosificación, el tanque (1) corresponde a una torre de deaireación, el variador de presión (2) corresponde a una pierna barométrica generada por una bomba de vacío, el mecanismo de dosificación (3) es una tolva y la bomba (4) es una bomba centrífuga de piso. Example: dosing device in the process of precipitation of cyanoauriferous and cyanoargentiferous complexes via the Merrill-Crowe route. A dosing device was designed and built to perform the gold precipitation process in a Merrill Crowe process. Referring to FIG. 3, in said dosing device, the tank (1) corresponds to a deaeration tower, the pressure variator (2) corresponds to a barometric leg generated by a vacuum pump, the dosing mechanism (3) is a hopper and The pump (4) is a centrifugal floor pump.
El tanque (1) está conectado a un depósito de solución preñada mediante una línea de The tank (1) is connected to a reservoir of pregnant solution through a line of
i  i
conducción hecha en PVC con tubería de 1 - pulgadas de diámetro nominal. El tanquePVC conduction with 1 - inch nominal diameter pipe. The tank
(1) tiene una altura de 2,5m y es un tubo de cédula 40 hecha con acero al carbono. La conexión entre el depósito de solución preñada y el tanque (1) se encuentra a 2,4m de altura. Al interior del tanque (1) se disponen 5 platos para distribuir homogéneamente la solución preñada. El nivel de solución preñada se ubica entre 80 y 110cm. El tanque (1) tiene un transmisor de nivel (13) que corresponde a un visor de 30cm de largo ubicado entre los 80 y 110cm de altura del tanque. En la parte superior del tanque (1) se dispone un manómetro de glicerina para medir la presión de la fase gaseosa. (1) It has a height of 2.5m and is a 40-pipe tube made of carbon steel. The connection between the pregnant solution tank and the tank (1) is 2.4m high. Inside the tank (1) 5 plates are arranged to homogeneously distribute the pregnant solution. The level of pregnant solution is between 80 and 110cm. The tank (1) has a level transmitter (13) that corresponds to a 30cm long viewfinder located between 80 and 110cm high. In the upper part of the tank (1) there is a glycerin pressure gauge to measure the pressure of the gas phase.
El variador de presión (2) consiste de una bomba de vacío de una etapa con una potencia de 1/4 Hp que alcanza una presión de -104 kpa. The pressure variator (2) consists of a single stage vacuum pump with a power of 1/4 Hp that reaches a pressure of -104 kpa.
El mecanismo de dosificación (3) es un embudo formado de una sección cilindrica de 50 centímetros de altura y 16" de diámetro; y una sección cónica que tiene un diámetro mayor de 16" y un diámetro menor de 3/4". El mecanismo de dosificación (3) está hecho en acero al carbono y está a presión ambiental. La dosificación se realiza mediante microgoteo. The dosing mechanism (3) is a funnel formed of a cylindrical section 50 centimeters high and 16 "in diameter; and a conical section having a diameter greater than 16" and a diameter less than 3/4 ". Dosing (3) is made of carbon steel and is at ambient pressure.The dosage is carried out by micro drip.
La bomba (4) es una bomba centrífuga de 1,5 Hp. Todas las válvulas son de bola y están hechas de PVC. El retorno en la línea de descarga es de 3/4". El control de todas las válvulas es manual. The pump (4) is a 1.5 Hp centrifugal pump. All valves are ball and are made of PVC. The return on the discharge line is 3/4 ". The control of all valves is manual.
A la salida del proceso, la solución preñada y dosificada llega a filtros de prensa de los cuales se toman muestras y se hacen reaccionar con un cromófono para verificar que se encuentre totalmente precipitado el oro. At the exit of the process, the pregnant and dosed solution arrives at press filters from which samples are taken and reacted with a chromophone to verify that the gold is completely precipitated.
Se debe entender que la presente invención no se halla limitada a las modalidades descritas e ilustradas, pues como será evidente para una persona versada en el arte, existen variaciones y modificaciones posibles que no se apartan del espíritu de la invención, el cual solo se encuentra definido por las siguientes reivindicaciones. It should be understood that the present invention is not limited to the modalities described and illustrated, since as will be evident to a person versed in art, there are possible variations and modifications that do not depart from the spirit of the invention, which is only found defined by the following claims.

Claims

CAPÍTULO REIVINDICATORIO Modificaciones Voluntarias - Examen de Forma CLAIMS CHAPTER Voluntary Modifications - Form Examination
1. Un dispositivo de dosificación que comprende: 1. A dosing device comprising:
un tanque (1) con dos entradas y una salida, la primera entrada se conecta a un suministro de un fluido líquido y la salida se conecta a una línea de salida; a tank (1) with two inlets and one outlet, the first inlet is connected to a supply of a liquid fluid and the outlet is connected to an outlet line;
un variador de presión (2) conectado a la segunda entrada del tanque (1) mediante una tubería; a pressure regulator (2) connected to the second inlet of the tank (1) by means of a pipe;
una bomba (4) con una succión y una descarga, la succión se conecta a la línea de salida; a pump (4) with a suction and a discharge, the suction is connected to the outlet line;
un mecanismo de dosificación (3) con una entrada y una salida, el mecanismo de dosificación se carga con sustancias, la salida del mecanismo de dosificación (3) se conecta a un desglose de la línea de salida ubicado entre el tanque (1) y la bomba (4); y a dosing mechanism (3) with an inlet and an outlet, the dosing mechanism is loaded with substances, the outlet of the dosing mechanism (3) is connected to a breakdown of the outlet line located between the tank (1) and the pump (4); and
una línea de descarga con un retorno a la entrada del mecanismo de dosificación (3), la línea de descarga se conecta a la descarga de la bomba (4); a discharge line with a return to the inlet of the dosing mechanism (3), the discharge line connects to the discharge of the pump (4);
donde la bomba (4) y el variador de presión (2) provocan un flujo del fluido líquido desde el tanque (1) y el mecanismo de dosificación (3) a través de la bomba (4). where the pump (4) and the pressure variator (2) cause a flow of liquid fluid from the tank (1) and the dosing mechanism (3) through the pump (4).
2. El dispositivo de la Reivindicación 1, donde: 2. The device of Claim 1, where:
se dispone una primera válvula (5) entre el tanque (1) y el suministro de fluido líquido; a first valve (5) is arranged between the tank (1) and the liquid fluid supply;
se dispone una segunda válvula (6) entre el tanque (1) y el variador de presión A second valve (6) is arranged between the tank (1) and the pressure regulator
(2); (2);
se dispone una tercera válvula (7) en el desglose de la línea de salida; a third valve (7) is arranged in the outlet line breakdown;
se dispone una cuarta válvula (8) en la succión de la bomba (4); a fourth valve (8) is arranged in the suction of the pump (4);
se dispone una quinta válvula (9) en el retorno de la línea de descarga al mecanismo de dosificación; y a fifth valve (9) is arranged in the return of the discharge line to the dosing mechanism; and
se dispone una sexta válvula (10) en la línea de descarga. A sixth valve (10) is arranged in the discharge line.
3. El dispositivo de la Reivindicación 2 caracterizado porque: se dispone un primer transmisor de flujo (11) entre la primera válvula (5) y el tanque (1); 3. The device of Claim 2 characterized because: a first flow transmitter (11) is arranged between the first valve (5) and the tank (1);
se dispone un primer transmisor de presión (12) conectado al tanque (1) por encima del nivel de fluido líquido; a first pressure transmitter (12) connected to the tank (1) is arranged above the liquid fluid level;
se dispone un primer transmisor de nivel (13) conectado al tanque (1) a la altura de la fase líquida; a first level transmitter (13) connected to the tank (1) is arranged at the height of the liquid phase;
se dispone un segundo transmisor de presión (15) conectado aguas debajo de la sexta válvula (10); a second pressure transmitter (15) is arranged downstream of the sixth valve (10);
se dispone un primer controlador de flujo (16) con dos entradas y una salida, una entrada conectada al primer transmisor de flujo (11), la otra entrada conectada al primer transmisor de presión (12) y la salida conectada a la primera válvula (5); se dispone un primer controlador de presión (17) con una entrada y una salida, la entrada conectada al primer transmisor de presión (12) y la salida conectada a la segunda válvula (6); A first flow controller (16) is arranged with two inputs and one output, one input connected to the first flow transmitter (11), the other input connected to the first pressure transmitter (12) and the output connected to the first valve ( 5); a first pressure controller (17) is arranged with an input and an output, the input connected to the first pressure transmitter (12) and the output connected to the second valve (6);
se dispone un primer control de nivel (18) con dos entradas y una salida, una entrada conectada al primer transmisor de presión (12), la otra entrada conectada al primer transmisor de nivel (13) y la salida conectada a la sexta válvula (10); se dispone un segundo control de nivel (14) conectado al mecanismo de dosificación (3); y A first level control (18) is provided with two inputs and one output, one input connected to the first pressure transmitter (12), the other input connected to the first level transmitter (13) and the output connected to the sixth valve ( 10); a second level control (14) connected to the dosing mechanism (3) is provided; and
se dispone un segundo controlador de presión (19) con una entrada y una salida, la entrada conectada al segundo transmisor de presión (15) y la salida conectada a la quinta válvula (9). A second pressure controller (19) is provided with an input and an output, the input connected to the second pressure transmitter (15) and the output connected to the fifth valve (9).
4. El dispositivo de la Reivindicación 1, caracterizado porque al interior del tanque (1) se disponen medios de distribución homogénea de fluido líquido. 4. The device of Claim 1, characterized in that means for homogeneous distribution of liquid fluid are arranged inside the tank (1).
5. La unidad de precipitación de la Reivindicación 1, caracterizada porque se dispone un bafle deflector entre el variador de presión (2) y el tanque (1). 5. The precipitation unit of Claim 1, characterized in that a deflector baffle is arranged between the pressure regulator (2) and the tank (1).
6. La unidad de precipitación de la Reivindicación 1, caracterizada porque la tubería tiene una relación entre la longitud y el diámetro entre 1 y 100. 6. The precipitation unit of Claim 1, characterized in that the pipe has a ratio between length and diameter between 1 and 100.
7. La unidad de precipitación de la Reivindicación 1, caracterizada porque la bomba (4) es centrífuga de piso. 7. The precipitation unit of Claim 1, characterized in that the pump (4) is a floor centrifugal pump.
8. La unidad de precipitación de la Reivindicación 1, caracterizada porque el mecanismo de dosificación (3) comprende una sección cónica con un ángulo entre 10 y 90° medido desde un plano perpendicular al eje de revolución de la sección. 8. The precipitation unit of Claim 1, characterized in that the dosing mechanism (3) comprises a conical section with an angle between 10 and 90° measured from a plane perpendicular to the axis of revolution of the section.
9. El dispositivo de la Reivindicación 1, donde el tanque (1) se selecciona del grupo compuesto por unidades de deaireación, reactores, biorreactores, torres de destilación y combinaciones de los anteriores. 9. The device of Claim 1, wherein the tank (1) is selected from the group consisting of deaeration units, reactors, bioreactors, distillation towers and combinations of the above.
10. Un proceso de control para un dispositivo de dosificación de acuerdo con cualquiera de las Reivindicaciones 1-9, el cual se conecta a un suministro de fluido líquido con solución preñada, dicho proceso comprende las siguientes etapas: 10. A control process for a dosing device according to any of Claims 1-9, which is connected to a supply of liquid fluid with pregnant solution, said process comprises the following steps:
a. cerrar el paso de flujo entre: to. close the flow path between:
el suministro de fluido líquido y el tanque (1); the liquid fluid supply and tank (1);
el tanque (1) y el variador de presión (2); the tank (1) and the pressure regulator (2);
el tanque (1) y el mecanismo de dosificación (3); the tank (1) and the dosing mechanism (3);
el tanque (1), el mecanismo de dosificación (3) y la bomba (4); the tank (1), the dosing mechanism (3) and the pump (4);
la bomba (4) y el retorno al mecanismo de dosificación (3); y la bomba (4) y el límite de batería; the pump (4) and the return to the dosing mechanism (3); and the pump (4) and the battery limit;
b. encender el variador de presión (2); b. turn on the pressure regulator (2);
c. abrir el paso de flujo entre el tanque (1) y el variador de presión (2); c. open the flow path between the tank (1) and the pressure regulator (2);
d. abrir el paso de flujo entre el suministro de fluido líquido y el tanque (1), una vez que se obtenga un nivel en el tanque (1); d. open the flow path between the liquid fluid supply and the tank (1), once a level is obtained in the tank (1);
e. abrir el paso de flujo entre el tanque (1) y el mecanismo de dosificación (3); f. abrir el paso de flujo entre el tanque (1), el mecanismo de dosificación (3) y la bomba (4); and. open the flow path between the tank (1) and the dosing mechanism (3); F. open the flow path between the tank (1), the dosing mechanism (3) and the pump (4);
g. encender la bomba (4); g. turn on the pump (4);
h. abrir el paso de flujo entre la bomba (4) y el límite de batería; h. open the flow path between the pump (4) and the battery limit;
i. abrir el paso de flujo entre la bomba (4) y el retorno al mecanismo de dosificación (3); y Yo. open the flow passage between the pump (4) and the return to the dosing mechanism (3); and
j. dosificar químicos en el mecanismo de dosificación (3). j. dose chemicals in the dosing mechanism (3).
PCT/IB2017/053321 2016-06-07 2017-06-06 Dispensing device WO2017212398A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4913730A (en) * 1987-05-15 1990-04-03 Canadian Patents And Development Ltd. Recovery of gold from aqueous solutions
US5250273A (en) * 1990-01-18 1993-10-05 Canadian Liquid Air Ltd - Air Liquide Canada Ltee Hydrometallurgical leaching process and apparatus
US5449397A (en) * 1994-06-24 1995-09-12 Hunter; Robert M. Biocatalyzed leaching of precious metal values
WO2000015856A1 (en) * 1998-09-16 2000-03-23 Acacia Resources Limited A process for gold extraction
US20020179451A1 (en) * 2001-04-20 2002-12-05 Weldon Todd A. Apparatus and method for recovery of gold and silver from ore
WO2014090260A1 (en) * 2012-12-13 2014-06-19 Flsmidth A/S Zinc precipitation systems and methods for the efficient recovery of precious metals

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4913730A (en) * 1987-05-15 1990-04-03 Canadian Patents And Development Ltd. Recovery of gold from aqueous solutions
US5250273A (en) * 1990-01-18 1993-10-05 Canadian Liquid Air Ltd - Air Liquide Canada Ltee Hydrometallurgical leaching process and apparatus
US5449397A (en) * 1994-06-24 1995-09-12 Hunter; Robert M. Biocatalyzed leaching of precious metal values
WO2000015856A1 (en) * 1998-09-16 2000-03-23 Acacia Resources Limited A process for gold extraction
US20020179451A1 (en) * 2001-04-20 2002-12-05 Weldon Todd A. Apparatus and method for recovery of gold and silver from ore
WO2014090260A1 (en) * 2012-12-13 2014-06-19 Flsmidth A/S Zinc precipitation systems and methods for the efficient recovery of precious metals

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