JP2013233530A - Gas-liquid interface increasing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas-liquid interface increasing apparatus which needs no corrosion prevention measures and no explosion prevention measures when a matter to be handled is corrosive and/or inflammable since to keep a gas-liquid interface large may exert a large influence upon operation efficiency in material transfer operation for exerting evaporation concentration, absorption dissolving or the like via the gas-liquid interface.SOLUTION: A fluid transportation apparatus, for exerting fluid circulation in a storage container 4 where gas-liquid interface increasing operation is exerted, is provided. The whole apparatus is made of a plastic or is covered with a plastic so that the fluid transportation apparatus may have corrosion resistance and not be made into an ignition source. Further a centrifugal fluid transportation apparatus 3, which is constituted so as to be driven by kinetic energy of driving fluid having pressure equal to or larger than atmospheric pressure and is adjusted outside the apparatus in order to avoid electricity feed and electricity utilization, is arranged in the container and the fluid in the storage container is sucked and dispersed to attain increase of gas-liquid interface.

Description

      The present invention relates to gas and liquid contact, such as an absorption operation for absorbing and dissolving a specific gas component in an absorption medium, which is a specific liquid, and a solvent evaporation operation for removing a solvent component in a specific solution by evaporation. The present invention relates to a means for increasing the gas-liquid interface formed in the operation target substance storage container 4 in the mass transfer operation performed in the above state.

Conventionally, as a means for increasing the gas-liquid interface, generally, a filler is arranged in the target substance storage container 4 for the operation, or the target substance is stirred by a stirrer, and a circulation pump installed outside The liquid component is circulated and scattered by a single method or a combination thereof.
However, when heating or cooling is required in accordance with the mass transfer operation, the externally installed pump and the circulation pipe generate heat loss. In addition, when the stirrer is used, if the operation target substance is corrosive, there are restrictions on the use of the metal material of the stirrer.
In addition, when the operation target substance is a flammable substance, there is a problem that the electric device becomes a flammable source, which makes it difficult to implement the means.

Shigenfumi Fujita Koichi Tahara Goichi Yoshida Ed. Practical handbook for chemical equipment and machinery P528-529 (1967)
Published by Asakura Shoten Co., Ltd.

            The object of the present invention is to provide means for increasing the gas-liquid interface that can be used in a corrosive and / or flammable atmosphere in mass transfer operations.

      The present invention described in claim 1 is an apparatus for performing a transfer operation of a specific substance via a gas-liquid interface, such as an operation for absorbing a gas component into a liquid component or a solvent evaporation operation for evaporating and removing a solvent from a solution. The drive-side rotor 1 is arranged to rotate in an independent non-magnetic drive-side container 30 using a gas having a pressure higher than the atmospheric pressure generated by heating the functional hydrocarbon and / or organic solvent as a drive medium. The drive-side rotor 2 arranged to rotate in another independent non-magnetic actuating vessel 31 by rotating the drive-side rotor 1 by contacting and flowing the drive medium using the action of magnetic force. The centrifugal fluid transport device 3 configured to rotate indirectly and rotate and suck and transport the fluid by the rotation is fixedly placed in the storage container 4 of the target substance that performs the moving operation of the specific substance, and the Inhale / spray the fluid in the storage container 4 This is a gas-liquid interface increasing device configured to increase the gas-liquid interface in the storage container 4, and thus there is no metal part that is a wear-resistant material required for a stirrer or the like, and each part is made of corrosion-resistant plastic or the like. Since it is configured to be covered with a certain material and use no electric power, it is a gas-liquid interface increasing device that can be used in corrosive and / or flammable atmospheres.

      Further, in the present invention described in claim 1, “directly rotate in conjunction with the action of magnetic force” means that the driving-side rotor 1 and the operating-side rotor 2 are made of a non-magnetic material and arranged close to each other. This is a gas-liquid interface increasing device that can be used in a flammable atmosphere that does not use electric power.

      In the present invention according to claim 1, a single substance or a mixture of two or more substances among organic solvents such as various hydrocarbons, alcohols and ethers is used as the drive medium, and the drive medium is used at room temperature. A gas-liquid interface increasing device configured to heat and pressurize the above heat source directly or indirectly through a heat medium, and has 2 to 5 carbon atoms in the methane hydrocarbon as the hydrocarbon. Substances, methanol, ethanol, propanol as the alcohol, dimethyl ether, diethyl ether, etc. can be used as the ether.

      The present invention according to claim 2 is a method in which a single substance or a mixture of two or more substances is used directly or as a driving medium from various hydrocarbons, alcohols, ethers and other organic solvents using a heat source at room temperature or higher. A receiver provided at the upper part in the vertical direction in the circulation path 7 by utilizing the buoyancy of the internal bubbles generated during the heating and pressure increase in order to circulate and use in the closed circulation path 7 that is indirectly heated and pressurized via a heat medium. The drive medium is pumped up to the inside of the tank 9 and flows down using the energy at the position, and the intermittent injection valve 8 that intermittently shuts off and opens the circulating fluid is arranged downstream of the receiver tank 9 and the The backflow prevention valve 10 is arranged upstream of the site where the internal bubbles are generated, and intermittent injection is performed toward the drive-side rotary blade 1 via the drive medium circulation path 5 by the pressure in the receiver tank 9 generated by the heating. Let me circulate A gas-liquid interface increases device that can be used in flammable atmosphere which does not consume the driving medium by which a gas-liquid interface increases device configured to facilitate.

      The gas-liquid interface increasing device according to claim 1 or 2, wherein a part of the surface of the part of the drive medium circulation pipe 5 through which the drive medium flows and the part disposed in the storage container 4 is partially open. A gas-liquid interface increasing device configured to be arranged in contact with the flow path 6 being inclined downwardly in a vertically downward direction, and is a part of the drive medium circulation conduit 5 through which the drive medium flows, and in the storage container 4 Is a gas-liquid interface increasing device in which the upper open channel 6 is arranged in contact with a part of or all of the surface of the upper open channel 6 inclined downwardly in a vertically downward gradient, and the upper open channel 5 is a centrifugal type Accepts the fluid sprayed by the fluid transport device 3 and arranges it so that it flows down to the lower part, and has a vertical cross section with a U-shaped, V-shaped, concave or similar flow path, and the re-deposited solute solids are open top Adhesion / deposition on the surface of channel 5 It increases the porosity in the solute and increases the temperature of the target substance in the storage container 4 as a heat transfer medium for the heat in the drive medium circulation line 5 to evaporate the solvent adhering to the solute solid. It is a gas-liquid interface increasing device to promote.

      In the solvent evaporation operation, the generated solvent vapor is configured to be discharged to the outside of the storage container 4 by its own pressure and / or a suction device.

        The heat of 100 ° C. or less as a heating source in the present invention refers to solar heat, geothermal heat, waste incinerator waste heat, exhaust heat from various factory facilities, atmospheric heat in the vicinity of the equator, ground heat in the desert area, etc. directly or It is a warm source of room temperature or higher that is indirectly obtained through an intermediate heat medium, and may be referred to as medium temperature heat. Even if the said heat source is 100 degreeC or more, it can be utilized.

The drive-side rotor blade 1 of the centrifugal fluid transport device 3 in the present invention may be any one that rotates using the kinetic energy of the drive fluid, and the shape of the impeller is not limited to the centrifugal impeller. Similarly, the working-side rotor 2 can be used in a shape capable of sucking and discharging fluid by the rotation.

      The injection of the heated and pressurized drive medium into the drive-side rotor 1 in the present invention may be continuous or intermittent.

According to the present invention, in a device that performs a transfer operation of a specific substance via a gas-liquid interface, such as an operation for absorbing a gas component into a liquid component or a solvent evaporation operation for evaporating and removing a solvent from a solution, a comparison of renewable energy, etc. Therefore, it is possible to increase the gas-liquid interface formed in the storage container 4 that is corrosive and / or flammable by using a low temperature heat source, and the efficiency of the operation can be increased.
In addition, the use of renewable energy and unused energy has an environmentally friendly effect.

It is a block diagram of the gas-liquid interface increase apparatus in the recrystallization apparatus which concerns on embodiment of this invention. It is a block diagram of the centrifugal fluid transport apparatus which concerns on embodiment of this invention.

A gas-liquid interface increasing device according to an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a configuration diagram of a gas-liquid interface increasing device according to an embodiment of the present invention.
FIG. 2 is a block diagram of the centrifugal fluid transport device.

      In an apparatus for performing a solvent evaporation operation for evaporating and removing water, which is a solvent, from an aqueous sodium chloride solution, ethanol and butane are mixed inside the storage container 4 of the aqueous solution, and the equilibrium vapor pressure at 50 ° C. is 1.5 in terms of gauge pressure. A centrifugal fluid transporting device 3 that operates using a mixture adjusted to ˜1.9 atm as a driving medium is fixedly arranged.

      The centrifugal fluid transport device 3 rotates in a non-magnetic working side container 31 independent of the driving unit 10 including the driving-side rotor 1 arranged to rotate in an independent non-magnetic driving side container 30. The actuating part 11 composed of the actuating rotor blades 2 arranged as described above is configured by being fixedly arranged so that the rotating surface of the driving rotor blade 1 and the rotating surface of the actuating rotor blade 2 are parallel and close to each other. In addition, permanent magnets 12, 13, 14, and 15 are embedded and fixedly arranged inside the facing sides of the driving rotor 1 and the operating rotor 2 that are arranged close to each other.

            In the heat receiving part 22 of the solar heat collector 21 which is a part of the drive medium circulation path 5 in FIG. 1, the drive medium is heated and heated by solar heat, and bubbles generated by internal boiling are used to form the upper part of the solar heat collector 21. Pump into the receiver tank 9 placed in When the pressure in the receiver tank 9 reaches 1.9 atm as a gauge pressure, the intermittent injection valve 8 arranged on the downstream side is opened, the drive medium is discharged, the drive rotor 1 is rotated, and the operation rotor 2 is rotated. Then, the aqueous sodium chloride solution at the bottom of the storage container 4 is sucked through the suction pipe 23 and sprayed toward the surface of the upper open channel 6 through the discharge pipe 24.

        On the other hand, the drive medium enclosed between the backflow prevention valve 20 arranged upstream of the heat receiving section and the intermittent injection valve 8 arranged downstream of the receiver tank rapidly moves to the downstream side of the drive medium circulation path as the intermittent injection valve 8 opens. The heat receiving unit 22 is temporarily reduced in pressure, and passes through the backflow prevention valve 20 using this to return the drive medium to the heat receiving unit 22. Since the temperature of the drive medium that has been refluxed is decreasing, the pressure is decreased and the intermittent injection valve is closed. By repeating this operation, the centrifugal fluid transport device is intermittently operated by solar heat without using electric power.

      A gas-liquid interface increasing device that can be used in a corrosive and / or flammable atmosphere by configuring each part of the driving medium circulation line 5, the centrifugal fluid transport device 3 and the upper open-type flow path 6 with a corrosion-resistant material such as plastic. Become.

        When the absorbing liquid is used as a driving medium for the centrifugal fluid transporting device 3 in the absorption operation for absorbing the gas component into the liquid component, the driving medium rotating the driving-side rotor 1 opens into the driving-side container 30. After spraying into the storage container 4 where the absorption operation is performed from one or two or more arranged outlets and using it as an absorption liquid, after discharging and collecting outside the storage container 4 and increasing the purity by distillation operation etc. It can be recycled.

      When the upper open channel 6 is also used as a heat transfer medium, it is made of a material having heat transfer and corrosion resistance, and is a part of the drive medium circulation path 5 and is a centrifugal fluid transport device in the storage container 4 3 is fixedly disposed in contact with a part or all of the swirling and rising type driving fluid return pipe 32 which is the downstream part. The upper open-type flow path 6 is continuous or a plurality of upper open-type flow paths 6 are inclinedly arranged toward the lower part of the central portion of the storage container 4 independently.

The drive medium circulation line 5 may be a metal pipe covered with plastic.
The centrifugal fluid transporting device 3 has an intake pipe 23 for sucking the fluid in the storage container 4 and a discharge pipe 24 for discharging the sucked fluid to a predetermined position.
The generated steam in the storage container 4 is discharged via the steam discharge pipe 25.

           The open / close control of the intermittent injection valve 8 can be performed by using a change in pressure or a change in temperature in the receiver tank. If necessary, install safety devices such as pressure relief tubes.

      The upper open-type flow path 6 is inclined so as to receive the fluid dispersed by the centrifugal fluid transport device 3 and flow down to the lower part, and the vertical cross section is a U-shaped, V-shaped, concave or similar flow path, The re-deposited solute solid adheres to and accumulates on the surface of the upper open channel 5 to increase the porosity in the solute, and becomes a heat transfer medium for the heat in the drive medium circulation pipe 5 to perform the operation in the storage container 4 It is arranged for the purpose of promoting the temperature rise of the target substance and promoting the evaporation of the solvent attached to the solute solid.

      In the solvent evaporation operation, the generated solvent vapor is discharged to the outside of the storage container 4 via the vapor discharge pipe 25 by its own pressure and / or a suction device.

The heat of 100 ° C. or less as a heating source in the present invention refers to solar heat, geothermal heat, waste incinerator waste heat, exhaust heat from various factory facilities, atmospheric heat in the vicinity of the equator, ground heat in the desert area, etc. directly or , A heat source from room temperature to 100 ° C. obtained indirectly through an intermediate heat medium.
When the heating source exceeds 100 ° C. due to geothermal heat or the like, the heating side temperature in the heat receiving unit 22 is set to 100 ° C. or less via an intermediate medium.

The drive-side rotor blade 1 of the centrifugal fluid transport device 3 in the present invention may be any one that rotates using the kinetic energy of the drive fluid, and the shape of the impeller is not limited to the centrifugal impeller. Similarly, the working-side rotor 2 can be used in a shape capable of sucking and discharging fluid by the rotation.

The injection of the heated and pressurized drive medium into the drive-side rotor 1 in the present invention may be continuous or intermittent.
The intermittent injection valve 8 detects the pressure in the receiver tank 9 and is controlled to open and close by a combination of a pressure switch and a solenoid valve, or the power in the receiver tank 9 is antagonized with the attractive or repulsive force of a spring or magnet. Open and close can be controlled without using it.
The receiver tank 7 may be arranged on the downstream side of the intermittent injection valve 8.

        The present invention can be used in a melting refrigerator that uses an endothermic phenomenon during melting in a combination of a specific solute and a solvent as a cold heat source. That is, in order to increase the gas-liquid interface in the regenerator which is a space for performing recrystallization operation and remelting operation repeatedly performed in the melting refrigerator, and to improve the efficiency of the recrystallization operation, Available.

      In the melting refrigerator, the solvent vapor is extracted and removed for recrystallization using the suction function of the ejector. Immediately removing the drive gas of the ejector after passing through the ejector increases the efficiency of the ejector. One of the methods for this is to absorb the driving gas in the absorption liquid, and the present invention improves the efficiency of the absorption operation by increasing the gas-liquid interface in the absorption operation. Available in

        The present invention relates to a distillation-type fresh water production apparatus that uses seawater, contaminated lake water, river water, pumped water from underground aquifers, waste water from various facilities, etc. as water source water, and evaporates water vapor from the water source water. In order to improve the efficiency of the separation / recovery operation by increasing the gas-liquid interface in the container for performing the operation in the separation / recovery operation according to the above, it can be used in a fresh water production apparatus of the distillation system.

        The present invention relates to a gas-liquid in a container that performs the concentration or drying operation in an operation of concentrating or drying solute components by evaporating and separating water from squeezed juices such as fruits and sugar millet, and solvent from solutions in various industries. It can be used for the purpose of improving the efficiency of the concentration or drying operation by increasing the interface.

      According to the present invention, in the operation of moving the specific substance via the gas-liquid interface, such as the operation of absorbing the gas component into the liquid component or the solvent evaporation operation of evaporating and separating the solvent from the solution, Since the gas-liquid interface in the container can be increased safely even when the inside of the container is corrosive and / or flammable, the efficiency of the transfer operation of the specific substance can be improved.

1 Driving rotor
2 Acting rotor
3 Centrifugal fluid transport device
4 Storage container
5 Drive medium circulation line
6 Upper open channel
7 Receiver tank
8 Intermittent injection valve
9 Receiver tank
10 Drive unit
11 Actuator
12 13 14 15 Permanent magnet
20 Check valve
21 Solar collector
22 Heat receiving part
23 Suction pipe
24 Discharge pipe
25 Steam exhaust pipe
26 Discharge port
30 Drive side container
31 Working side container
32 Rotating ascending drive fluid return line
33 Abnormal pressure relief valve

Claims (3)

      A device that performs a mass transfer operation via a gas-liquid interface, and uses a single substance or a mixture of two or more liquid substances whose equilibrium vapor pressure exceeds atmospheric pressure in the temperature range from room temperature to 100 ° C. The drive fluid is heated and boosted in the heat receiving part 22 for heating and boosting with an external heat source of 100 ° C. or lower, and is arranged to rotate in the independent drive-side container 30 via the drive fluid circulation line 5. The drive-side rotor 1 is rotated by contacting and flowing to the drive-side rotor 1, and the operating-side rotor 2 arranged to rotate in another independent operating-side container 31 is utilized by the action of magnetic force. The centrifugal fluid transport device 3 configured to rotate in conjunction and suck and transport the fluid by the rotation is fixedly disposed in the storage container 4 of the target substance that performs the mass transfer operation, and the storage container 4 Inhaling and spraying fluid A gas-liquid interface increasing device characterized in that the gas-liquid interface in the storage container 4 is further increased.             A heating / transporting means for the driving medium, which is a method for heating and transporting internal bubbles generated by boiling when the pressure is increased directly or indirectly through a heating medium in the heat receiving section 22 by using an external heat source of normal temperature or higher and 100 ° C. or lower. Using the buoyancy, the drive medium is pumped up to the receiver tank 9 provided at the upper part in the vertical direction in the drive medium circulation pipe 7 and flows down using the position energy, and the flow of the drive medium is shut off and opened. The intermittent injection valve 8 is arranged on the downstream side of the receiver tank 9 and the backflow prevention valve 20 is arranged on the upstream side of the heat receiving part 22 so that the pressure in the receiver tank 9 is increased by the heating. Centrifugal fluid transport device using the pressure reducing phenomenon between the intermittent injection valve 8 and the backflow prevention valve 20 generated immediately after the injection by intermittently injecting the drive medium toward the drive side rotor blade 1 via the path 5 From saving 2. The structure according to claim 1, wherein the drive medium is further circulated toward the heat receiving portion 22 through the backflow prevention valve 20 via the drive medium circulation pipe 5 disposed in the container. The gas-liquid interface increasing apparatus as described. A part of the drive medium circulation pipe 5 through which the drive medium flows and a part or all of the surface of the part arranged in the storage container 4 are in contact with the upper open flow path 6 inclined downwardly in a vertically downward gradient. Gas-liquid interface augmentation device characterized by being arranged

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