JP2010279918A - Gas separation apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas separation apparatus capable of separating natural gas dissolved in hot-spring raw water. <P>SOLUTION: The apparatus includes a turbulent flow type steam separator 1 comprising a container 10 in which hot-spring water containing natural gas is introduced and a plurality of stirring members 11 which, installed in the container 10, make the hot-spring water introduced therein to collide with them to generate a turbulent flow. Thus, natural gas dissolved in the hot-spring water is made to bubble up and to easily separate. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a gas separation device for separating natural gas from hot spring water.

  In order to prevent disasters caused by combustible natural gas that occurs when hot springs are collected, hot spring facilities are required to make natural gas contained in hot spring water below a predetermined concentration. As a technique for separating natural gas contained in such hot spring water, for example, Patent Literatures 1 and 2 describe a gas separation device that separates natural gas from hot spring water using a specific gravity difference.

JP 2008-285583 A Japanese Patent No. 2735548

  In the case of an apparatus that separates natural gas using the above-mentioned specific gravity difference, natural gas contained as bubbles in hot spring water can be separated to some extent, but natural gas dissolved in hot spring water is removed. Can not do it.

  Therefore, an object of the present invention is to provide a gas separation device capable of separating natural gas dissolved in hot spring water.

  The gas separation device of the present invention includes a container into which hot spring water containing natural gas is introduced, and a plurality of stirring members that are provided in the container and generate turbulent flow by colliding the hot spring water introduced into the container And a turbulent air / water separator.

  According to the gas separation device of the present invention, hot spring water introduced into a container is vigorously stirred by colliding with a plurality of stirring members, and turbulent flow is generated. As a result, the natural gas dissolved in the hot spring water is bubbled and can be easily separated.

  Here, the container has a partition plate for partitioning the inside of the container into a plurality of tanks excluding the upper space, a water inlet for introducing hot spring water from the upper part of the container toward the tank partitioned by the partition plate, It is desirable to have a drain outlet provided at the lower part of a tank different from the tank provided with the water inlet.

  Thereby, the hot spring water introduced into the container is introduced from the upper part of the container toward the tank partitioned by the partition plate, and is vigorously stirred by colliding with a plurality of stirring members as described above, and turbulent flow is generated. Although this occurs, the stirred hot spring water is transferred from the upper space of the tank to another tank, and is further vigorously stirred by colliding with a plurality of stirring members in the tank. Discharged from. That is, it is possible to lengthen the time during which the hot spring water introduced into the container collides with the plurality of stirring members and stirs, and promotes the bubbling of natural gas by stirring.

  The plurality of stirring members are preferably arranged in a staggered manner in the container. Thereby, the stirring effect when the hot spring water introduced into the container collides with the plurality of stirring members is enhanced, and the bubbling of the natural gas dissolved in the hot spring water is further promoted.

  Furthermore, it is desirable that the gas separation device of the present invention has a laminar flow water / water separator provided with a container for introducing and swirling hot spring water discharged from the turbulent flow water / water separator. The hot spring water in which the natural gas melted as described above is bubbled by the turbulent flow turns into a laminar flow by swirling in the container of the laminar flow water separator. Thereby, the bubble of the natural gas in hot spring water rises by specific gravity difference, and is isolate | separated from hot spring water. Further, the centrifugal force is generated by the swirling of the hot spring water, and the bubbles of the natural gas having a small specific gravity are collected in the center where the flow is slow, so that the natural gas can be easily removed from the hot spring water.

  If the amount of natural gas contained in the hot spring water is large, the natural gas is contained in the hot spring water in the form of bubbles. Therefore, the laminar air / water separator is connected upstream of the turbulent air / water separator. It is also possible to have a configuration on the side. In this case, the natural gas-containing hot spring water is first removed from the natural gas bubbles by a laminar flow type water separator, and then the natural gas dissolved in the hot spring water is bubbled by a turbulent flow water separator. Can be removed.

  Moreover, it is desirable that the gas separation device of the present invention is provided with a stirring device that stirs the hot spring water in the middle of the water conduit leading to the water inlet of the turbulent air-water separator. By stirring the hot spring water to be introduced into the container of the turbulent flow-type steam / water separator with a stirring device in advance, the stirring effect when the hot spring water introduced into the container collides with the stirring member is increased. Vigorously stirred. In addition, when a stirrer is provided in the middle of the water conduit leading to the water inlet of the laminar flow water separator, stir the hot spring water to be introduced into the laminar water separator with the stirrer in advance. Therefore, it is possible to promote the bubbling of the natural gas and to further easily remove the natural gas by using a laminar flow type steam separator.

  The stirring device includes a plurality of blades disposed at predetermined intervals in the water conduit, and includes a plurality of blades inclined in the reverse direction at positions shifted by 180 ° around the central axis of the water conduit. It is desirable that As a result, the hot spring water passes while being disturbed in the flow direction by the plurality of blades inclined in the reverse direction around the central axis of the water conduit and is stirred.

  The gas separation device of the present invention includes a perforated plate having a plurality of holes formed in the middle of a water conduit leading to a water inlet of a turbulent air / water separator or a laminar air / water separator. It is desirable to be. As a result, cavitation occurs when the hot spring water passing through the water conduit to the water inlet of the turbulent air / water separator or laminar flow water / water separator passes through the holes of the perforated plate. The bubbling of the natural gas dissolved in the gas is further promoted.

(1) Turbulence comprising a container into which hot spring water containing natural gas is introduced, and a plurality of stirring members that are provided in the container and collide with the hot spring water introduced into the container to generate turbulent flow By having the flow-type steam-water separator, the natural gas dissolved in the hot spring water can be bubbled and easily separated.

(2) The container partitions the inside of the container into a plurality of tanks excluding the upper space, the water inlet for introducing hot spring water from the upper part of the container toward the tank partitioned by the partition plate, The hot spring water introduced into the container collides with a plurality of stirring members and is stirred by being provided with a drain port provided at the lower part of the tank different from the tank provided with the water inlet The time can be made longer, and the bubbling of natural gas by stirring can be further promoted.

(3) Since the plurality of stirring members are arranged in a staggered manner in the container, the stirring effect when the hot spring water introduced into the container collides with the plurality of stirring members is increased, and the hot water is dissolved in the hot spring water. The bubbling of natural gas is further promoted.

(4) By further including a laminar flow type water separator equipped with a container for introducing and swirling hot spring water discharged from the turbulent flow type water separator, the dissolved natural gas is bubbled by turbulent flow. The hot spring water is turned into a laminar flow by swirling in the container of this laminar air-water separator. Thereby, the bubble of natural gas rises by specific gravity difference, and is isolate | separated from hot spring water. Further, the centrifugal force is generated by the swirling of the hot spring water, and the bubbles of the natural gas having a small specific gravity gather at the center where the flow is slow, so that the natural gas can be easily removed from the hot spring water.

(5) When the amount of natural gas contained in the hot spring water is large, a state of bubbles in the hot spring water can be obtained by having a laminar flow water separator on the upstream side of the turbulent air water separator. It is possible to remove the natural gas abundantly in the hot spring water first by using a laminar flow water separator, and then the natural gas dissolved in the hot spring water can be bubbled by the turbulent air water separator for more efficient removal. Become.

(6) By providing a stirring device that stirs the hot spring water in the middle of the water conduit leading to the water inlet of the turbulent air-water separator, when the hot spring water introduced into the container collides with the stirring member Since the stirring effect is enhanced and the mixture is stirred more vigorously, the bubbling of the natural gas dissolved in the hot spring water is further promoted.

(7) Agitating the hot spring water to be introduced into the laminar flow water / water separator in advance by providing a stirrer in the middle of the water conduit leading to the water inlet of the laminar flow water / water separator Thus, the bubbling of the natural gas is promoted, and the natural gas can be more easily removed by the laminar flow type steam separator.

(8) By being provided with a plurality of blades arranged at predetermined intervals in the water conduit, and provided with a plurality of blades inclined in the reverse direction around the central axis of the water conduit at a position shifted by 180 °, Natural water dissolved in the hot spring water, since the hot spring water is passed and stirred by a plurality of blades inclined in the opposite direction at a position shifted by 180 ° around the central axis of the water conduit. Is further promoted.

(9) A water guide pipe leading to the water inlet by providing a perforated plate with a plurality of holes in the middle of the water pipe leading to the water inlet of the turbulent air / water separator or laminar air / water separator Cavitation occurs when the hot spring water that passes through the plurality of holes of the perforated plate, and the bubbling of the natural gas dissolved in the hot spring water is further promoted.

It is a schematic block diagram of the gas separation apparatus in embodiment of this invention. FIG. 2 is an enlarged view of the turbulent steam / water separator of FIG. 1. FIG. 3 is a right side view of the turbulent air / water separator of FIG. 2. It is AA sectional drawing of FIG. It is an enlarged view of the laminar flow type steam separator of FIG. FIG. 6 is a right side view of the laminar flow steam separator of FIG. 5. It is BB sectional drawing of FIG. It is an enlarged view of the stirring member of FIG. It is CC sectional drawing of FIG. It is a top view which shows the blade which comprises the stirring member of FIG. It is a side view which shows the aeration apparatus provided in the middle of a water conduit. It is DD sectional drawing of FIG. It is a front view of the porous plate of FIG. It is EE sectional drawing of FIG. It is a figure which shows a gas water ratio measurement result. It is a figure which shows a gas water ratio measurement result. It is a figure which shows a gas water ratio measurement result.

  FIG. 1 is a schematic configuration diagram of a gas separation device according to an embodiment of the present invention, FIG. 2 is an enlarged view of a turbulent steam-water separator in FIG. 1, and FIG. 3 is a right side of the turbulent steam-water separator in FIG. FIG. 4 is a cross-sectional view taken along the line AA of FIG. 2, FIG. 5 is an enlarged view of the laminar flow water separator of FIG. 1, and FIG. 6 is a right side view of the laminar flow water separator of FIG. 7 is a sectional view taken along the line BB in FIG. 5, FIG. 8 is an enlarged view of the stirring member in FIG. 1, FIG. 9 is a sectional view taken along the line CC in FIG. FIG.

  In FIG. 1, the gas separation device in the embodiment of the present invention is mainly composed of a turbulent flow water separator 1 and a laminar flow water separator 2. Hot spring water containing natural gas is introduced into the turbulent flow water separator 1 through the water conduit 3. Further, the turbulent air / water separator 1 and the laminar air / water separator 2 are connected by a water conduit 4. A stirring device 5 for stirring the hot spring water is provided in the middle of the water conduit 3.

  As shown in FIGS. 2 to 4, the turbulent steam-water separator 1 includes a cylindrical container 10 into which hot spring water is introduced, and the hot spring water provided in the container 10 and introduced into the container 10. A plurality of stirring members 11 that collide with each other to generate turbulent flow, a partition plate 13 that divides the inside of the container 10 into two tanks 12b and 12c excluding the upper space 12a, and a gas that discharges the gas in the upper space 12a And a drain valve 14.

  Further, the container 10 includes a water inlet 15 for introducing hot spring water introduced by the water conduit 3 from the upper part of the container 10 toward the one tank 12b, and a drain port 16 provided at the lower part of the other tank 12c. Have. Further, the stirring member 11 is made of Yamagata rope, and is staggered on the partition plate 13 at predetermined intervals on both the tanks 12b and 12c with the peaks of the respective stirring members 11 facing upward.

  As shown in FIGS. 5 to 7, the laminar flow water / water separator 2 includes a cylindrical container 20, a columnar rectifier 21 erected in the center of the container 10, and a container 20 The gas vent valve 23 is configured to discharge the gas in the upper space 22. The container 20 also has a water inlet 24 for introducing hot spring water introduced by the water conduit 4 from the upper part of the container 20 and a drain outlet 25 for discharging the hot water from the lower part of the container 20. In addition, the water inlet 24 and the drain port 25 are provided in the position offset from the center of the container 20, as shown in FIG.

  As shown in FIG. 8, the stirring device 5 includes a plurality of blade plates 50 a and 50 b and a shaft member 51 that are arranged in the water conduit 3 at predetermined intervals. The blades 50a and 50b are substantially semi-elliptical plates as shown in FIG. 10, and are shifted by 180 ° around the shaft member 51 arranged at the center of the water conduit 3 as shown in FIGS. It is arranged so as to incline in the opposite direction at a certain position. That is, the 90 ° inclination is different between the front surface of the blade 50a disposed in the left half of FIG. 9 and the front surface of the blade 50b disposed in the right half.

  In the gas separation device having the above-described configuration, hot spring water pumped up by a pumping pump (not shown) or the like and fed is introduced into the turbulent air / water separator 1 through the water conduit 3. At this time, the hot spring water first passes while being disturbed in the flow direction by the stirring device 5 provided in the middle of the water conduit 3, is stirred, and is introduced into the turbulent steam-water separator 1.

  In the turbulent flow separator 1, the water is introduced from the water inlet 15 at the top of the container 10 toward the tank 12b, and is vigorously stirred by colliding with the plurality of stirring members 11 to generate turbulent flow. As a result, the natural gas dissolved in the hot spring water is bubbled. And the hot spring water in the tank 12b flows into the adjacent tank 12c beyond the upper end of the partition plate 13, and is discharged from the drain 16 at the lower part of the tank 12c. Then, the mixture is vigorously stirred again by colliding with the stirring member 11.

  The hot spring water discharged from the drain port 16 is introduced into the laminar flow water separator 2 through the water conduit 4. In the laminar flow steam / water separator 2, hot spring water is introduced along the inner wall surface of the container 20 from the water inlet 24 at the top of the container 20, so that the introduced hot spring water rotates around the rectifier 21. While being laminarized, it is discharged from the drain port 25 at the bottom of the container 20. At this time, the rectified hot spring water is separated from the hot spring water by the natural gas bubbles in the hot spring water rising due to the specific gravity difference. Moreover, centrifugal force works by turning the hot spring water, and bubbles of natural gas having a small specific gravity gather around the rectifier 21 at the center of the slow-flow container 20.

  As described above, in the gas separation device according to the present embodiment, the natural gas dissolved in the hot spring water is bubbled by the turbulent gas-water separator 1, and the hot spring water containing the bubbled natural gas is laminar. It is separated into bubbles and hot spring water by the type steam-water separator 2. The natural gas separated by the laminar flow water / water separator 2 is accumulated in the upper space 22 of the container 20 of the laminar flow water / water separator 2 and is discharged from the gas vent valve 23. Similarly, the natural gas accumulated in the upper space 12 a of the turbulent flow separator 1 is discharged from the gas vent valve 14.

  As described above, in the gas separation device according to the present embodiment, the container 10 into which the hot spring water containing natural gas is introduced and the hot spring water provided in the container 10 and collided with the hot spring water introduced into the container 10 are disturbed. By having the turbulent flow-type water / water separator 1 provided with a plurality of stirring members 11 for generating a flow, it is possible to easily form natural gas dissolved in the hot spring water by bubbling.

  In particular, in this gas separation device, the container 10 is divided into a plurality of tanks 12 b and 12 c except for the upper space 12 a by the partition plate 13, and hot spring water is separated from the upper part of the container 10 by the partition plate 13. By having a water inlet 15 to be introduced toward the partitioned tank 12b and a drain 16 provided at a lower part of the tank 12c different from the tank 12b provided with the water inlet 15, It is possible to lengthen the time during which the hot spring water introduced into the container 10 collides with the plurality of stirring members 11 and stirs, and it is possible to further promote the bubbling of natural gas by stirring. In the present embodiment, the two tanks 12b and 12c are divided by the single partition plate 13, but may be divided into three or more by the two or more partition plates.

  Moreover, in this gas separation apparatus, since a plurality of stirring members 11 are arranged in a staggered manner in the container 10, stirring when hot spring water introduced into the container 10 collides with the plurality of stirring members 11 is performed. The effect is enhanced and the bubbling of natural gas dissolved in the hot spring water is further promoted. In addition, arrangement | positioning of the stirring member 11 can also be set as arrangement | sequences other than a staggered arrangement | sequence.

  In addition, since this gas separation device further includes a laminar flow water / water separator 2 having a container 20 for introducing and swirling hot spring water discharged from the turbulent flow water / separator 1, the dissolved natural gas The hot spring water, which has been bubbled by turbulent flow, is swirled in the container 20 of the laminar flow-type water separator 2 to become laminar flow, and the natural gas bubbles in the hot spring water rise due to the difference in specific gravity. Separated. In addition, since the centrifugal force works by the swirling of the hot spring water and the bubbles of the natural gas having a small specific gravity gather in the central part where the flow is slow, it is possible to easily remove the natural gas from the hot spring water.

  In addition, in this embodiment, although it is the structure which has arrange | positioned the turbulent type steam-water separator 1 in the upstream and the laminar-flow type steam-water separator 2 in the downstream, on the contrary, a layer is formed in the upstream. The flow type steam / water separator 2 may be configured to have the turbulent type steam / water separator 1 disposed on the downstream side. When there is a large amount of natural gas dissolved in the hot spring water, the laminar flow water / water separator 2 is provided on the upstream side of the turbulent flow water / separator 1 so that a large amount of bubbles are generated in the hot spring water. It is possible to remove the natural gas contained in the hot spring water first by the laminar flow water / water separator 2, and then the natural gas dissolved in the hot spring water can be bubbled by the turbulent water / water separator 1 to be removed more efficiently. Become.

  Moreover, in the gas separation apparatus in this embodiment, the stirring apparatus 5 which stirs the hot spring water is provided in the middle of the water conduit 3 leading to the water inlet 15 of the turbulent gas-water separator 1. The agitation effect when the introduced hot spring water collides with the agitation member 11 is enhanced, and the agitation is performed more vigorously. Thereby, bubbling of the natural gas dissolved in the hot spring water is further promoted. Further, the stirring device 5 may be configured to be provided in the middle of the water conduit 4 leading to the water inlet 24 of the laminar flow water / water separator 2. In this case, the hot spring water to be introduced into the laminar flow water separator 2 is agitated by the agitator 5 in advance to promote the bubbling of the natural gas. Further, it can be removed easily.

  In addition, since the stirring device 5 includes a plurality of blade plates 50a and 50b inclined in the reverse direction around the central axis of the water guide pipe 3, the hot spring water is provided with the plurality of blade plates. Since the flow direction is disturbed by 50a and 50b and the mixture is stirred, the bubbling of the natural gas dissolved in the hot spring water is further promoted, and the effect of removing the natural gas dissolved in the hot spring water is high.

  Moreover, it can also be set as the structure provided with the bubble forming apparatus 6 shown in FIGS. 11 is a side view showing the aeration apparatus 6 provided in the middle of the water conduit 3, FIG. 12 is a sectional view taken along the line DD in FIG. 11, FIG. 13 is a front view of the porous plate in FIG. 12, and FIG. It is EE sectional drawing.

  The aeration apparatus 6 shown in FIG. 11 is provided in the middle of the water conduit 3, and in the substantially cylindrical casing 60, the slit 61, the mesh pressure ring 62, and the A mesh 63 is provided.

  A plurality of perforated plate holding holes 64 are formed in the slit 61. The perforated plate 65 shown in FIG. 13 is fitted in each of the perforated plate holding holes 64. The perforated plate 65 is a disc-shaped plate material, and a plurality of apertures 66 are provided around the center at intervals of 40 °. As shown in FIG. 14, the opening 66 may be a round hole having a diameter of 3 mm, for example, and 90 ° countersinks may be provided on both sides, but these can be changed.

  The mesh 63 is, for example, a mesh made of PVC (polyvinyl chloride) of # 10 to # 24 mesh. The mesh pressing ring 62 is for holding the mesh 63 in the casing 60.

  According to such an aeration device 6, cavitation occurs when the hot spring water passing through the water conduit leading to the water inlet 15 passes through the plurality of apertures 66 of the porous plate 65 provided in the slit 61, Natural gas dissolved in the hot spring water is bubbled. Thereby, the bubbling in the next turbulent air-water separator 1 is further promoted, and the natural gas separation effect is improved. Note that the aeration device 6 can be provided in the middle of the water conduit 4 leading to the water inlet of the laminar flow water / water separator 2.

  In the aeration apparatus 6 in the present embodiment, it is possible to generate more effective cavitation by providing countersinks on both sides of the aperture 66 of the perforated plate 65, and natural gas is aerated. Can be performed efficiently. Moreover, by providing the mesh 63 on the downstream side, the hot spring water that has passed through the perforated plate 65 is sheared, and further bubble formation is promoted.

  The removal effect of the natural gas by the gas separator in this embodiment was confirmed. 15 to 17 show the measurement results of the gas water ratio. 15-17, the gas water ratio has shown the volume ratio of the natural gas contained in hot spring water, and the hot spring water except this natural gas.

  In the example shown in FIG. 15, the hot spring water is 209.2 for the gas 1, and% LEL was 100% LEL or more before the gas separation device was installed, whereas 19% after the gas separation device was installed. Reduced to above LEL. In addition,% LEL represents the ratio with respect to the minimum density | concentration (LEL (Lower Explosive Limit): explosion lower limit) with which a combustible gas causes a combustion explosion in percentage. For example, since the lower limit of explosion of methane gas is 5%, 50% LEL is obtained when the concentration of methane gas is 2.5%.

  In the example shown in FIG. 16, the hot spring water is 16.6 with respect to the gas 1, and the natural gas content is higher than that in the example of FIG. 15. On the other hand, it decreased to 17% LEL or more after the gas separator was installed.

  In the example shown in FIG. 17, the hot spring water is 0.8 with respect to the gas 1, and the content of natural gas is very large. Therefore, two turbulent gas-water separators 1 of the gas separator are arranged in series. In this case, the% LEL was 100% LEL or more before the gas separator was installed, but decreased to 21% LEL or more after the gas separator was installed.

  The gas separation device of the present invention is useful as a device for separating natural gas from hot spring water in various hot spring facilities such as a health land and a hot spring center.

DESCRIPTION OF SYMBOLS 1 Turbulent flow water separator 2 Laminar flow water separator 3, 4 Water conduit 5 Stirrer 6 Aeration device 10 Container 11 Stirring member 13 Partition plate 14 Degassing valve 15 Water inlet 16 Drain outlet 20 Container 21 Adjustment Fluid 23 Gas vent valve 24 Water inlet 25 Water outlet 50a, 50b Blade plate 51 Shaft member 60 Casing 61 Slit 62 Mesh holding ring 63 Mesh 64 Porous plate holding hole 65 Porous plate 66 Opening

Claims (10)

A container into which hot spring water containing natural gas is introduced;
A gas separation device having a turbulent flow water separator provided in the container and provided with a plurality of stirring members that collide with hot spring water introduced into the container to generate turbulent flow. The container is
A partition plate for partitioning the inside of the container into a plurality of tanks excluding the upper space;
A water inlet for introducing the hot spring water toward the tank partitioned by the partition plate from the upper part of the container;
The gas separator according to claim 1, further comprising a drain outlet provided at a lower portion of a tank different from the tank provided with the water inlet.   The gas separation device according to claim 1 or 2, wherein the plurality of stirring members are arranged in a staggered manner in the container.   The gas separation device according to any one of claims 1 to 3, further comprising a laminar flow water / water separator provided with a container for introducing and swirling hot spring water discharged from the turbulent water / water separator.   The gas separation device according to any one of claims 1 to 4, further comprising a laminar flow water / water separator provided with a container for introducing and swirling the hot spring water upstream of the turbulent water / water separator. .   The gas separation device according to any one of claims 1 to 3, further comprising a stirrer that stirs the hot spring water in the middle of the water conduit to the water inlet of the turbulent air / water separator.   The gas separator according to claim 4 or 5, further comprising a stirring device that stirs the hot spring water in the middle of a water conduit leading to a water inlet of the laminar flow water separator.   The stirring device includes a plurality of blades arranged at predetermined intervals in the water conduit, and includes a plurality of blades inclined in the reverse direction around the central axis of the water conduit at a position shifted by 180 °. The gas separation device according to claim 6 or 7, wherein the gas separation device is one.   The gas separation device according to any one of claims 1 to 8, further comprising a perforated plate in which a plurality of holes are formed in the middle of the water guide pipe leading to the water inlet of the turbulent air / water separator.   The gas separation device according to claim 4, 5 or 7, further comprising a perforated plate in which a plurality of holes are formed in the middle of the water conduit leading to the water inlet of the laminar flow water separator.

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