JP5576577B1 - Gas extraction device - Google Patents

Abstract

When extracting a gas in a gaseous state from the target liquid by heating and evaporating the target liquid, even if the gas is a flammable gas, the gas is reliably in a gaseous state without being ignited. It is an object of the present invention to provide a gas extraction device that can extract a gas.
An auxiliary heating unit that auxiliaryly heats a target liquid containing a gas component in a liquid state, and the target liquid heated by the auxiliary heating unit is introduced into the target liquid. A main heating unit 3 that heats and vaporizes, and the auxiliary heating unit 2 includes a liquid medium holding unit 11 that holds a liquid medium that is a liquid for a heat medium, heat exchange with the liquid medium, and A target liquid holding means for holding the target liquid in a state not confused with the liquid medium, and conducts heat of the liquid medium to the target liquid.
[Selection] Figure 1

Description

  The present invention relates to a gas extraction device that takes out a gas in a gaseous state from the target liquid by heating and evaporating the target liquid containing a gas component.

  2. Description of the Related Art A gas extraction device that takes out a gas in a gaseous state from the target liquid by heating and evaporating the target liquid containing a gas component is known (for example, see Patent Document 1).

JP-A-2-227102

  In the gas extraction device of the above document, the target liquid is pumped from the tank to the heating unit, heated by the heating unit, and then sent to the decompression chamber for vaporization. In such a technique, when the gas to be taken out is a combustible gas, there is a risk of ignition when the target liquid is directly heated by the heating unit, which is problematic in terms of safety.

  In the present invention, when the gas is taken out from the target liquid by heating and evaporating the target liquid, even if the gas is a flammable gas, the gas is surely kept in a gaseous state without being ignited. It is an object of the present invention to provide a gas extraction device that can extract gas.

In order to solve the above-mentioned problem, a gas extraction device that takes out a gas in a gaseous state from the target liquid by heating and evaporating the target liquid containing the gas component, wherein the gas component is in a liquid state An auxiliary heating unit that auxiliaryly heats the target liquid contained in the liquid, and a main heating unit that introduces the target liquid heated by the auxiliary heating unit and heats and vaporizes the introduced target liquid, auxiliary heating unit includes a liquid tank which liquid medium is poured inside a liquid heat-transfer medium, and a container in which the object liquid was poured therein, was poured into the liquid bath liquid by immersing at least a portion of said container so as to allow heat exchange to the liquid medium in a state not to be confused with the medium, the heat of the liquid medium by conducting the object liquid within said vessel the subject solution supplementally a structure to heat, inert gas introduction hand for introducing an inert gas into the target-liquid in the container The inert gas introduction means has an introduction nozzle that introduces the inert gas in a bubble state by being immersed in the target liquid in the container, and above the liquid level of the target liquid in the container, In the space where the pressure rises by the inert gas introduced by the inert gas introduction means and the target liquid heated and misted by the heat conducted from the liquid medium is mixed with the introduced inert gas. A certain space is formed, and the main heating unit has a heating space in which an inert gas atmosphere is formed to heat the mist target liquid, and the inert gas and the mist target liquid are supplied to the main heating unit. The transfer pipe for transferring to the heating space side is piped to a position not reaching the liquid level of the target liquid in the space .

A gas extraction device that takes out a gas in a gaseous state from the target liquid by heating and vaporizing the target liquid containing the gas component, and the target liquid containing the gas component in a liquid state An auxiliary heating unit for auxiliary heating; and a main heating unit that introduces the target liquid heated by the auxiliary heating unit and heats and vaporizes the introduced target liquid. A liquid tank in which a liquid medium, which is a liquid for use, is poured, and a container in which the target liquid is poured, and is heated without being confused with the liquid medium poured in the liquid tank. The container has a structure in which at least a part of the container is immersed in the liquid medium so as to be exchanged, whereby the heat of the liquid medium is conducted to the target liquid in the container to supplementally heat the target liquid. An inert gas introduction means for introducing an inert gas into the target liquid is provided in the container. Above the liquid surface of the target liquid to be heated, the target liquid that is heated and heated by heat conducted from the liquid medium and mist is introduced by the inert gas introduced by the inert gas introduction means. A space which is a space mixed with the inert gas formed is formed, and the main heating unit has a heating space in which an inert gas atmosphere is formed and heats the mist target liquid, and the mist formation The auxiliary target heating unit may have a heating unit that heats the liquid medium in the liquid tank and a cooling unit that cools the liquid medium. .

The inert gas introduction means may introduce an inert gas having a temperature higher than that of the target liquid into the target liquid .

It is good also as what was provided in the middle of the flow path of the gas heated and vaporized by this heating part, and provided with the temperature adjustment means which adjusts the temperature of this gas .

The gas may be a combustible reducing gas .

The liquid medium may be water or a liquid that neutralizes the target liquid .

  Since the target liquid is indirectly heated by the liquid medium in the auxiliary heating unit and then indirectly heated and vaporized in the main heating unit, even if the gas is a flammable gas, it is not ignited. The gas can be reliably taken out in the gaseous state.

It is a front view of the gas extraction device to which the present invention is applied. It is a side view of the gas extraction device to which the present invention is applied. It is explanatory drawing which illustrates notionally the principal part structure of the gas extraction apparatus shown to FIG. It is a flowchart which shows the procedure which takes out gas using this gas extraction apparatus shown in FIG.

  1 and 2 are a front view and a side view of a gas extraction device to which the present invention is applied. The gas extraction apparatus 1 shown in the figure is an apparatus for extracting a gas component to be vaporized from a target liquid containing the liquid component in a liquid state, and the gas is combustible in this example. Formic acid gas, which is a reducing gas, and the target liquid is a formic acid aqueous solution.

  The gas extraction device 1 includes an auxiliary heating unit 2 for heating the formic acid aqueous solution and misting it, and a book for heating and vaporizing the formic acid aqueous solution that is auxiliary heated and misted by the auxiliary heating unit 2. The heating unit 3, the transfer pipe 4 that transfers the formic acid aqueous solution that has been auxiliary heated by the auxiliary heating unit 2 to the main heating unit 3, and the formic acid gas that has been heated and vaporized in the main heating unit 3, An output pipe 6 that outputs to the outside and a control box (control unit) 7 that includes a microcomputer and performs various controls are provided.

  The auxiliary heating unit 2 described above includes a pressure vessel (container, target solution holding means) 8 in which an aqueous formic acid solution is poured, and an inert gas (specifically, in the formic acid aqueous solution accommodated in the pressure vessel 8). An inert gas introduction means 9 for introducing nitrogen gas), a water tank (target liquid holding means, liquid tank) 11 in which water (liquid medium), which is a liquid heat medium that conducts heat, is poured, and A heating device (heating means) 12 which is a heater or the like for heating water stored in the water tank 11 and a cooling device (cooling means) 13 for cooling the water stored in the water tank 11 are included.

  In this example, the formic acid aqueous solution has a concentration of less than 90%. Formic acid has a boiling point of 107 ° C., a flash temperature of 65 ° C., and has a characteristic of evaporating vigorously when the temperature reaches 50 ° C. or higher.

  The water tank 11 is a bottomed container whose upper side is opened, and the opened upper end side is closed by a lid 11a, and water is accommodated and held therein. A water tank side temperature sensor 14 that is a temperature detecting means for detecting the temperature of the water poured inside is provided inside the water tank 11. The detection result of the water tank side temperature sensor 14 is input to the control box 7.

  The water in the water tank 11 is circulated in the water tank 11 → the circulation pump 15 → the water tank 11 →... By the circulation pump 15 installed on the control box 7 side. Is made uniform throughout. The operation of the circulation pump 15 is controlled by the control box 7.

  The heating device 12 is located on the bottom side in the water tank 11 and is installed in a state immersed in the water in the water tank 11, and the heating device 12 can heat the water in the water tank 11. Yes, its operation is controlled by the control box 7. Incidentally, since the water is circulated by the circulation pump 15 during this heating, the temperature is maintained in a state where the temperature of the water in the water tank 11 is made uniform.

  The cooling device 13 includes a device main body 13a having a function of cooling a liquid by a principle such as heat of vaporization, a cooling outflow pipe 13b piped from the bottom side of the water tank 11 to the device main body 13a, and the water tank 11 from the device main body 13a. And a cooling circulation pump 13d for causing the water in the water tank 11 to flow into the apparatus main body 13a and the water cooled by the apparatus main body 13a to flow into the water tank 11. Yes.

  In the cooling device 13, the water in the water tank 11 that circulates and flows by the power of the cooling circulation pump 13d is first sent to the device main body 13a through the cooling outflow pipe 13b, and is cooled by the device main body 13a. The water thus returned is returned into the water tank 11 through the cooling inflow pipe 13c. Thereafter, the cooling cycle of the water tank 11 → the cooling outflow pipe 13b → the apparatus main body 13a → the cooling inflow pipe 13c → the water tank 11 →... Is repeated, whereby the water in the water tank 11 is sequentially cooled.

  Incidentally, the operations of the apparatus main body 13a and the cooling circulation pump 13d are controlled by the control box 7, and while the circulation pump 15 is in operation, the operation of the cooling circulation pump 13d is stopped. Thus, while the cooling circulation pump 13d is in operation, the operation of the circulation pump 15 is stopped.

  And as above-mentioned, since the temperature of the water in the water tank 11 can be detected with the water tank side temperature sensor 14, the control box 7 is the heating apparatus 12 and the temperature of water so that it may become predetermined temperature set beforehand. Temperature control is performed via the cooling device 13.

  The pressure vessel 8 is a container having a structure formed in a bottomed cylindrical shape that is long in the vertical direction, and the opened upper end side is closed by a closing lid (closing cap) 8a to improve the internal airtightness. By the airtight structure, the inside of the pressure vessel 8 can be set to a high pressure with respect to the outside. As described above, the formic acid aqueous solution is injected into the pressure vessel 8, and a highly airtight space S is formed between the liquid surface of the formic acid aqueous solution in the pressure vessel 8 and the closing cap 8 a. Is done.

  The pressure vessel 8 is fixedly installed on the inner side of the water tank 11 with the middle portion and the lower end portion excluding the upper end portion immersed in the water in the water tank 11, and the upper end portion of the pressure vessel 8 is a lid of the water tank 11. It protrudes upward through 11a. The heat from the formic acid aqueous solution in the pressure vessel 8 is released to the water in the water tank 11 through the peripheral wall 8b of the pressure vessel 8, while the water-side heat is released through the peripheral wall 8b. And conducted to the formic acid aqueous solution.

  In other words, the pressure vessel 8 accommodates and holds the formic acid aqueous solution in a state where heat exchange can be performed between the internal formic acid aqueous solution and the water in the water tank 11 without mixing each other. doing. For this reason, the formic acid aqueous solution in the pressure vessel 8 is indirectly heated by heating the water in the water vessel 11, while the formic acid aqueous solution in the pressure vessel 8 is indirectly heated by cooling the water in the water vessel 11. Cool.

  A container-side temperature sensor 16 that is a temperature detecting means for detecting the temperature of the formic acid aqueous solution poured inside is provided inside the pressure vessel 8, and the detection result of the temperature sensor 16 is sent to the control box 7. Entered.

  That is, the control box 7 evaporates the water in the water tank 11 and the formic acid aqueous solution in the pressure vessel 8 using the cooling device 13 when the gas extraction device 1 that does not extract the formic acid gas from the formic acid aqueous solution is unused. The water tank 11 is used when the gas extraction device 1 is used to cool or maintain the liquid in a predetermined range (low temperature) in a predetermined range (low temperature) and stably maintain the liquid state while extracting the formic acid gas from the formic acid aqueous solution. The water inside is heated to a predetermined range of temperature (high temperature) by the heating device 12, so that the formic acid aqueous solution in the pressure vessel 8 is indirectly heated to a predetermined range of temperature. Heat to.

  For example, when the formic acid aqueous solution is stably held in a liquid state, the water temperature in the water tank 11 is controlled to about 25 ° C., and the temperature of the formic acid aqueous solution in the pressure vessel 8 is set to 27 ° C. or lower. adjust. On the other hand, when the formic acid aqueous solution is vaporized, the water temperature in the water tank 11 is set to about 60 to 70 ° C. (more preferably 70 ° C.), and the formic acid aqueous solution is heated by a hot water bath and evaporated.

  By the way, formic acid has the property of evaporating violently when it is 50 ° C. or higher, its boiling point is 107 ° C., and its flash point is 65 ° C. When the concentration of formic acid in the formic acid aqueous solution is 78% or less, the flammability is lost Less than 2% is harmless to human body.

  The inert gas introducing means 9 includes a drawing pipe 17 that draws nitrogen gas, which is an inert gas sent from the outside of the gas extracting device 1, into the inside of the gas extracting device 1, and An inert gas heating device (inert gas heating means) 18 that directly heats nitrogen gas, an introduction side pipe 19 that causes the gas heated by the inert gas heating device 18 to flow to the pressure vessel 8 side, and an introduction side It has an introduction nozzle 21 for introducing nitrogen gas from the pipe 19 into the inside of the pressure vessel 8, and a backflow prevention valve (not shown) for preventing the backflow of gas and liquid from the pressure vessel 8 to the drawing pipe 17 side. Yes.

  In other words, nitrogen gas is introduced into the pressure vessel 8 via a flow path formed by the lead-in pipe 17, the introduction side pipe 19, and the introduction nozzle 21, and in the middle of this flow path, the inert gas is introduced. A heating device 18 is provided, and the inert gas heated by the inert gas heating device 18 flows into the pressure vessel 8. The operation of the inert gas heating device 18 is controlled by the control box 7, and the nitrogen gas is heated and kept warm so that nitrogen gas having a temperature higher than that of the formic acid aqueous solution is introduced into the formic acid aqueous solution at the time of introduction. .

  At this time, nitrogen gas may be drawn into the gas extraction device 1 using a pressure difference from a cylinder (not shown) installed outside the gas extraction device 1 and containing nitrogen gas at a high pressure. Further, the liquefied nitrogen in a liquefied gas storage tank (not shown) containing liquefied nitrogen, which is a liquefied inert gas, is evaporated into nitrogen gas by an evaporation device connected to the liquefied gas storage tank, The nitrogen gas may be drawn into the gas extraction device 1 using the pressure difference.

  The introduction nozzle 21 penetrates the closing cap 8a up and down, and its lower end portion is immersed in the formic acid aqueous solution in the pressure vessel 8. Nitrogen gas is introduced into the formic acid aqueous solution, and the nitrogen The gas raises the pressure of the space S in the pressure vessel 8 and heats the formic acid aqueous solution stored in the pressure vessel 8.

  In the space S, the formic acid aqueous solution evaporated to mist (specifically, formic acid mist-like formic acid and mist-like water, more specifically, a large amount of mist-like formic acid and a small amount of water vapor) ) And the nitrogen gas introduced by the inert gas introduction means 9 are confused. Incidentally, the temperature of the nitrogen gas is heated to a temperature of 90 to 100 ° C. in the inert gas heating device 18 in order to give a function of heating the formic acid aqueous solution.

  The transfer pipe 4 described above is piped to the space S side in the pressure vessel 8, and the lower end thereof does not reach the water surface of the formic acid aqueous solution accommodated therein. The transfer pipe 4 may be provided with an electromagnetic open / close valve (not shown) controlled by the control box 7, and it is necessary to flow gas or mist-like liquid from the pressure vessel 8 to the main heating unit 3. When there is no, the opening / closing valve blocks the flow path of the transfer pipe 4. Moreover, it is possible to prevent an unintended fluid from flowing back into the space S from the transfer pipe 4 side by blocking the flow path.

Nitrogen gas and mist of aqueous formic acid are mixed in the pressure vessel 8, through the transfer feed pipe 4, sent to the heating unit 3. At this time, since the space S is pressurized, the nitrogen gas and the mist-formic formic acid aqueous solution smoothly flow to the main heating unit 3.

  The main heating unit 3 described above includes a heater 22 that extends in the horizontal direction, a heated pipe 23 that is spirally arranged around the heater 22 and has heat resistance, and a support that supports the heater 22, the heated pipe 23, and the like. The frame 24 is configured as a unit. Incidentally, the operation of the heater 22 is controlled by the control box 7.

  The heated pipe 23 is formed with a material for allowing a fluid to flow therein, and is made of a material that easily conducts heat of the heater 22 in the channel. The flow upstream end of the heated pipe 23 is connected to the flow downstream end of the transfer pipe 4, and the flow downstream end of the heated pipe 23 is connected to the output pipe 6.

  In the main heating unit 3, the heated pipe 23 having a long flow path is directly heated by the heater 22, and a mist-form formic acid aqueous solution and nitrogen gas are formed inside the heated pipe 23 (heating space). The mist-like formic acid aqueous solution is vaporized by flowing the confusion fluid consisting of the above, and the formic acid gas is output from the output pipe 6 described above. Incidentally, in the heating of the main heating unit 3, the formic acid aqueous solution is completely vaporized by heating to 107 ° C. or higher, which is the boiling point of formic acid.

  Since the formic acid gas thus vaporized is confused with nitrogen gas, which is an inert gas, temporarily, the formic acid gas in the heated pipe 23 is exposed to the outside due to cracks in the heated pipe 23 or the like. Even if it leaks and directly contacts the heater 22, it is confused with nitrogen gas, so the risk of ignition is greatly reduced.

  In other words, an inert atmosphere is formed in the heating space inside the heated pipe 23 by the nitrogen gas, and the risk of ignition is greatly reduced or almost eliminated. In addition, since the auxiliary heating unit 2 is once heated to a predetermined temperature, a rapid temperature rise is suppressed, and the risk of ignition is reduced in this respect as well.

  The formic acid gas output from the output pipe 6 described above is sequentially sent to the work space where the formic acid gas is used for work, but is vaporized in the middle of the flow path (in the middle of the piping path of the output pipe 6). You may provide the temperature adjustment apparatus 25 (refer FIG. 3) which is a temperature adjustment means which adjusts the temperature of formic acid gas.

  When the temperature is low, such as in winter, or when the piping path of the output pipe 6 is long, the temperature of the vaporized formic acid gas is lowered and it is easy to return to the mist state. This is reheated to keep the vaporized state.

  As described above, the temperature adjusting device 25 is used to control the output formic acid gas within a certain range (appropriate temperature) at which the vaporized state is maintained, and this operation is controlled by the control box 7. Is done.

  The control box 7 described above performs various controls as described above, and an operation panel 26 is installed for the operator to perform various operations. The worker performs various settings and operations via the operation panel 26.

  Next, based on FIG.3 and FIG.4, the gas extraction method using this gas extraction apparatus 1 is explained in full detail.

  FIG. 3 is an explanatory diagram conceptually illustrating the main configuration of the gas extraction device shown in FIGS. 1 and 2, and FIG. 4 shows a procedure for extracting gas using the gas extraction device shown in FIGS. FIG. When the gas extraction device 1 is not used, the water in the water tank 11 is held at a low temperature by the cooling device 13 or the like, and the formic acid aqueous solution in the pressure vessel 8 is stably held in a liquid state.

  The gas extraction method using the gas extraction device 1 includes an auxiliary heating step in the auxiliary heating unit 2, a main heating step in the main heating unit, and a temperature adjustment step in the temperature adjustment device.

  In the auxiliary heating step, the water in the water tank 11 is heated by the heating device 12 to increase the temperature, and the heat of this water is conducted to the formic acid aqueous solution in the pressure vessel 8 and heated by hot water. Further, the inert gas introduction means 9 introduces nitrogen gas into the formic acid aqueous solution in the form of bubbles, which also heats the formic acid aqueous solution and raises the pressure in the space S.

  At this time, the formic acid aqueous solution is accommodated in the pressure vessel 8 and heated in the absence of a fire source, so the possibility of ignition is low. Even when heated by nitrogen gas, the risk of ignition can be greatly reduced because the nitrogen gas is inactive.

  The formic acid aqueous solution is evaporated by heating by the hot water bath and the introduction of nitrogen gas to form a mist-like formic acid aqueous solution, thereby facilitating the transfer of the formic acid aqueous solution from the pressure vessel 8 to the main heating unit 3. The generated mist-form formic acid aqueous solution is confused with nitrogen gas in the space S to become a confused fluid. The confusion fluid increases the pressure in the space S, and the confusion fluid containing the mist-form formic acid aqueous solution is pumped to the main heating unit 3 via the transfer pipe 4 due to the pressure increase.

  That is, the pressure vessel 8, the inert gas introduction means 9, the water tank 11, and the like constitute a mist forming means 27 that mists the formic acid aqueous solution by evaporation.

  In the main heating step, an inert gas atmosphere is formed in the main heating unit 3 (specifically, the heating space in the heated pipe 23) by the nitrogen gas contained in the mixed fluid, and the flammability of the formic acid gas is increased. Under an inert gas atmosphere that lowers (more specifically, cancels), the introduced mist-like formic acid aqueous solution is heated and vaporized, and the vaporized formic acid gas is confused with nitrogen gas, Output from the output tube 6.

  More specifically, in the main heating unit 3, the heat from the heater 22 is conducted to the heating space formed in the heated pipe 23 through the peripheral wall of the heated pipe 23. The temperature rises. The formic acid aqueous solution in the mist state is heated and vaporized by being introduced into the heated heating space. At this time, it is conceivable that the formic acid gas leaks from the gaps or cracks in the heated pipe 23 and touches the heater 22, but even in such a case, in a state where it is mixed with nitrogen gas, which is an inert gas, Since the heater 22 is touched, ignition is efficiently prevented.

  Since the aqueous formic acid solution is already supplementarily heated by the auxiliary heating unit 2, since it can be heated moderately, the risk of ignition can be reduced, and the heating is performed under an inert gas atmosphere. The risk of ignition can be greatly reduced.

  In the temperature adjusting step, the temperature of the formic acid gas flowing through the output pipe 6 is appropriately controlled by the temperature adjusting device 25, and the temperature of the formic acid gas is maintained in a predetermined range that is maintained in a gaseous state by this control. Held in.

  In this way, the formic acid gas maintained at an appropriate temperature can be used as a reducing gas, and is sent to a working apparatus that performs work using this formic acid gas. For example, in the illustrated example, the working device is a heating furnace 28 that performs reflow soldering, and the formic acid gas extracted by the gas extraction device 1 is output to the heating furnace 28 via the output pipe 1.

  The formic acid gas sent to the heating furnace 28 is introduced into a heating chamber (working space) in the heating furnace 28 to form a reducing atmosphere in the heating chamber, and the reducing action improves wettability during solder melting. To improve the quality of solder connections.

  At this time, nitrogen gas is also introduced into the heating chamber, but the nitrogen gas itself is also an inert gas and has a function of preventing oxidation. improves.

  Note that a gas flow meter (gas flow rate detecting means) 29 for detecting the amount of formic acid gas supplied to the working device may be provided near the end of the output pipe 6 on the working device side (the end in the illustrated example). The measurement result may be input to the control box 2 or may be visible to the operator on the spot by a scale or the like.

  The gas extraction device 1 configured as described above is highly convenient because it is possible to safely extract gas vaporized in a state where the risk of ignition is greatly reduced. Moreover, since the extracted gas is also confused with the inert gas, even in this state, the risk of ignition is avoided and the gas is easy to handle.

  The target liquid may be a formic acid aqueous solution having a concentration of 90% or more. Further, the type of gas to be taken out is not limited to formic acid gas, and may be combustible reducing gas or other gas.

  Incidentally, in the above-described example, water is used as the liquid medium. However, the liquid medium may be of any type as long as the target liquid can be warmed in a heated state, and may be, for example, oil or the like, but preferably the target liquid contained in the pressure vessel A liquid that neutralizes the liquid or a liquid that can reduce the concentration and exchange heat is preferable. By selecting the liquid type of the liquid medium in this way, high safety can be ensured even if the target liquid leaks from the pressure vessel 8.

  Further, the inert gas introduced by the inert gas introduction means 9 is not limited to nitrogen gas, and may be a rare gas such as argon gas.

  Furthermore, in the above-described example, the heating space of the main heating unit 3 is provided in the heated pipe 23, but a dedicated space such as a heating chamber may be provided separately.

  Moreover, in the above-mentioned example, although the to-be-heated pipe 23 is heated with the radiant heat of the heater 22, you may make it heat with a convection heat. In this case, the main heating unit 3 includes a flow path for circulating and flowing air, a fan for circulating and flowing air in the flow path, and an air heating device for heating air convection in the flow path, The heated pipe 23 is arranged in the middle of the circulating flow path, and heat is convected by circulating and flowing air through the flow path, thereby heating the heated pipe 23.

  Further, when the formic acid aqueous solution that is the target liquid can be sufficiently heated in the auxiliary heating unit 2, the inert gas heating device 18 of the inert gas introduction means 9 may be omitted.

DESCRIPTION OF SYMBOLS 1 Gas extraction apparatus 2 Auxiliary heating part 3 This heating part 8 Pressure vessel (target liquid holding means, container)
9 Inert gas introduction means 11 Water tank (liquid medium holding means, liquid tank)
12 Heating device (heating means)
13 Cooling device (cooling means)
25 Temperature adjusting means (temperature adjusting means)
27 Mistification means

Claims (6)

A gas extraction device for extracting gas in a gaseous state from the target liquid by heating and evaporating the target liquid containing a gas component,
An auxiliary heating unit that auxiliaryly heats the target liquid containing the gas component in a liquid state;
A main heating unit that introduces the target liquid heated in the auxiliary heating unit and heats and vaporizes the introduced target liquid;
The auxiliary heating unit includes a liquid tank which liquid medium is a liquid heat-transfer medium is poured therein, and a container in which the object liquid was poured therein,
By immersing at least a portion of said container so as to allow heat exchange conditions not be confused with the liquid medium that is poured in the liquid tank to the liquid medium, transferred to the target liquid in the vessel to heat the liquid medium by a structure for heating the object liquid subsidiarily,
An inert gas introduction means for introducing an inert gas into the target liquid in the container is provided,
The inert gas introduction means has an introduction nozzle that introduces the inert gas in a bubble state by being immersed in the target liquid in the container,
Above the liquid surface of the target liquid in the container, the target liquid is misted by being heated by heat conducted from the liquid medium while the pressure is increased by the inert gas introduced by the inert gas introducing means. A space is formed which is a space mixed with the introduced inert gas,
The main heating unit has a heating space in which an inert gas atmosphere is formed to heat the mist target liquid.
A gas take-out device , wherein a transfer pipe for transferring an inert gas and a mist-like target liquid to the heating space side of the main heating unit is piped to a position that does not reach the liquid level of the target liquid in the space . A gas extraction device for extracting gas in a gaseous state from the target liquid by heating and evaporating the target liquid containing a gas component,
An auxiliary heating unit that auxiliaryly heats the target liquid containing the gas component in a liquid state;
A main heating unit that introduces the target liquid heated in the auxiliary heating unit and heats and vaporizes the introduced target liquid;
The auxiliary heating unit includes a liquid tank in which a liquid medium that is a liquid for a heat medium is poured, and a container in which the target liquid is poured.
By immersing at least a part of the container in the liquid medium so that heat exchange is possible without being confused with the liquid medium poured into the liquid tank, the heat of the liquid medium is conducted to the target liquid in the container. And a structure for supplementarily heating the target liquid,
An inert gas introduction means for introducing an inert gas into the target liquid in the container is provided,
Above the liquid surface of the target liquid in the container, the target liquid is misted by being heated by heat conducted from the liquid medium while the pressure is increased by the inert gas introduced by the inert gas introducing means. A space is formed which is a space mixed with the introduced inert gas,
The main heating unit has a heating space in which an inert gas atmosphere is formed to heat the mist target liquid.
The structure that introduces the mist target liquid into the heating space,
The auxiliary heating unit includes a heating unit that heats the liquid medium in the liquid tank and a cooling unit that cools the liquid medium.
A gas extraction device characterized by that . The inert gas introduction means introduces an inert gas having a temperature higher than that of the target liquid into the target liquid.
The gas extraction device according to claim 1 or 2 . A temperature adjusting means is provided in the middle of the flow path of the gas heated and vaporized by the main heating unit and adjusts the temperature of the gas.
The gas extraction device according to any one of claims 1 to 3 . The above gas is a flammable reducing gas
The gas extraction device according to any one of claims 1 to 4 . The liquid medium is water or a liquid that neutralizes the target liquid
The gas extraction device according to any one of claims 1 to 5 .

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