Geothermal power generation scrubber equipment

Abstract

To improve gas-liquid separation performance in a scrubber apparatus for geothermal power generation.SOLUTION: A scrubber apparatus for geothermal power generation processes a gas from a geothermal power generation facility to supply the gas to a power generator and includes: a wet cyclone scrubber part which has a reactor into which the gas is introduced and a liquid spray part for spraying a liquid into the reactor, and which processes the gas with the liquid; a gas lead-out part which is connected with the wet cyclone scrubber part and leads out the gas to the power generator; and a swirl part which is disposed at the downstream of the liquid spray part in a gas passage including the wet cyclone scrubber part and the gas lead-out part and swirls the gas in a predetermined swirl direction.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a scrubber unit for geothermal power generation. [Background technology]

[0002] 2. Description of the Related Art Gas treatment devices that treat gas from geothermal power generation facilities and the like are known (see, for example, Patent Documents 1 to 8). Patent Document 1: Japanese Patent Application Laid-Open No. 7-229325 Patent Document 2: Utility Model Registration No. 3160792 Patent Document 3: Japanese Patent Application Laid-open No. 1983-7528 Patent Document 4: International Publication No. 2014-014002 Patent Document 5 Japanese Patent Application Laid-Open No. 11-207106 Patent Document 6 Japanese Patent Application Laid-open No. 62-288800 Patent Document 7 Japanese Patent Application Laid-open No. 1-115428 Patent Document 8 JP-A-3-83615 Summary of the Invention [Problem to be solved by the invention]

[0003] In a geothermal power generation scrubber unit, it is preferable to improve gas-liquid separation performance. [Means for solving the problem]

[0004] In a first aspect of the present invention, there is provided a scrubber apparatus for geothermal power generation that treats gas from a geothermal power generation facility and supplies the gas to a power generation device. The scrubber apparatus for geothermal power generation may include a wet cyclone scrubber section. The wet cyclone scrubber section may have a reaction tower into which gas is introduced and a liquid spray section that sprays liquid into the reaction tower. The wet cyclone scrubber section may treat the gas with liquid. The scrubber apparatus for geothermal power generation may include a gas outlet section. The gas outlet section may be connected to the wet cyclone scrubber section and may discharge the gas to the power generation device. The scrubber apparatus for geothermal power generation may include a swirl section. The swirl section may be disposed downstream of the liquid spray section in a gas flow path including the wet cyclone scrubber section and the gas outlet section. The swirl section may swirl the gas in a predetermined swirl direction.

[0005] The geothermal scrubber unit may include a dry cyclone scrubber section. The dry cyclone scrubber section may process the gas. The gas may proceed from the dry cyclone scrubber section to the wet cyclone scrubber section.

[0006] The swirling section may be provided inside the reaction tower. The swirling section may be provided in the gas outlet section.

[0007] The power generating device may include a turbine. An axis of the rotating part and a rotation axis of the turbine may be coaxially arranged.

[0008] The scrubber unit for geothermal power generation may include a liquid recovery section that is provided downstream of the swirl section in the gas traveling direction and recovers liquid that has treated the gas.

[0009] The liquid recovery section may be formed of a protective material having a weaker hydrogen bonding force or a weaker electrical attraction than the material forming the gas outlet section. The inner wall of the liquid recovery section may be coated with a protective material having a weaker hydrogen bonding force or a weaker electrical attraction than the material forming the gas outlet section. The outer wall of the liquid recovery section may be coated with a protective material having a weaker hydrogen bonding force or a weaker electrical attraction than the material forming the gas outlet section.

[0010] The geothermal scrubber unit may include an opening that may connect the interior of the liquid recovery section to the reaction tower or the gas outlet. The opening may be coated with a protective material.

[0011] The liquid spray part may be formed of a protective material, and the inside of the liquid spray part may be coated with a protective material.

[0012] The blade of the swirl section may be coated with a protective material. The blade of the swirl section may be coated with a protective material only on the upstream side in the gas flow direction. The protective material may be a fluororesin, polyvinyl chloride, polyethylene, polypropylene, engineering plastic, or a carbon-based coating such as DLC (diamond-like carbon).

[0013] The scrubber unit for geothermal power generation may include a gas recovery unit. The gas recovery unit may be provided downstream of the turbine in the gas traveling direction and recover the gas.

[0014] The gas recovery section may cool the gas vapor and recover liquid. The gas recovery section recovers condensed water from the vicinity of the turbine. The scrubber unit for geothermal power generation may include a plurality of dry cyclone scrubber sections having different pipe diameters. The scrubber unit for geothermal power generation may include a switching section for selecting a dry cyclone scrubber section that supplies gas to a gas inlet of the wet cyclone scrubber section from among the plurality of dry cyclone scrubber sections. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a diagram showing an example of a scrubber unit 1000 for geothermal power generation according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a diagram showing an example of a wet cyclone scrubber section 100. [Diagram 3] 3 is a perspective view showing an example of a swivel unit 80 in FIG. 2. [Figure 4]FIG. 2 is a diagram showing another example of the wet cyclone scrubber unit 100 according to an embodiment of the present invention. [Diagram 5] 5 is a diagram showing an example of the liquid recovery section 51 shown in FIG. 4 when the reaction tower 10 is viewed from the traveling direction E1 of the gas 30. FIG. [Figure 6] FIG. 6 is a diagram showing an example of a cross section taken along the line AA' in FIG. [Figure 7] 3 is a diagram showing another example of the swivel unit 80 in FIG. 2. FIG. [Figure 8] 3 is a diagram showing another example of the swivel unit 80 in FIG. 2. FIG. [Figure 9] FIG. 2 is a diagram showing an example of a scrubber unit 2000 for geothermal power generation according to another embodiment of the present invention. [Figure 10] 2 is a diagram showing an example of a swirling section 80 in a geothermal power generation scrubber unit 2000. FIG. [Figure 11] FIG. 3 is a diagram showing an example of a scrubber unit 3000 for geothermal power generation according to another embodiment of the present invention. [Figure 12] FIG. 2 is a diagram showing an example of a swirling section 80 in a geothermal power generation scrubber unit 3000. [Figure 13] FIG. 2 is a diagram showing another example of the wet cyclone scrubber section 100 in the geothermal power generation scrubber apparatus 1000. [Figure 14] FIG. 2 is a diagram showing another example of the wet cyclone scrubber section 100 in the geothermal power generation scrubber apparatus 1000. [Figure 15] FIG. 2 is a diagram showing another example of the wet cyclone scrubber section 100 in the geothermal power generation scrubber apparatus 1000. [Figure 16] FIG. 2 is a diagram showing another example of the wet cyclone scrubber section 100 in the geothermal power generation scrubber apparatus 1000. [Figure 17] FIG. 2 is a diagram showing another example of the wet cyclone scrubber section 100 in the geothermal power generation scrubber apparatus 1000. [Figure 18] FIG. 2 is a diagram showing another example of the wet cyclone scrubber section 100 in the geothermal power generation scrubber apparatus 1000. [Figure 19]FIG. 2 is a diagram showing another example of the wet cyclone scrubber section 100 in the geothermal power generation scrubber apparatus 1000. [Figure 20] FIG. 2 is a diagram showing an example of a dry cyclone scrubber section 200. [Figure 21] FIG. 1 is a diagram showing another example of a scrubber unit 1000 for geothermal power generation. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] The present invention will be described below through embodiments of the invention, but the following embodiments do not limit the scope of the invention according to the claims. Furthermore, not all of the combinations of features described in the embodiments are necessarily essential to the solution of the invention.

[0017] 1 is a diagram showing an example of a scrubber apparatus 1000 for geothermal power generation according to one embodiment of the present invention. The scrubber apparatus 1000 for geothermal power generation includes a wet cyclone scrubber section 100, a dry cyclone scrubber section 200, a gas outlet section 300, a gas recovery section 500, and an introduction section 600.

[0018] The geothermal power scrubber unit 1000 treats gas 30 from a geothermal power plant. The geothermal power scrubber unit 1000 treats the gas 30 from the geothermal power plant and supplies it to the power plant 400. The gas 30 from the geothermal power plant may be steam from a production well 1100. The gas 30 from the geothermal power plant may be a mixture of steam and hot water from the production well 1100. The production well 1100 is a well that pumps steam and hot water from an underground geothermal reservoir. In FIG. 1, the steam from the production well 1100 is steam 1110, and the hot water from the production well 1100 is hot water 1120. The steam 1110 from the production well 1100 contains fine dust such as sediment, silica, and sulfides. It is preferable to prevent the power plant 400 from breaking down by removing the fine dust.

[0019] The introduction section 600 introduces the gas 30 containing the steam 1110 from the production well 1100 into the dry cyclone scrubber section 200. The introduction section 600 also introduces the liquid 40 into the wet cyclone scrubber section 100. In this example, the introduction section 600 has a heating tank 610 and a gas-liquid separation section 620.

[0020] The gas-liquid separation section 620 may separate the steam 1110 and the hot water 1120 from the production well 1100 into gas and liquid. In this example, the gas-liquid separation section 620 separates the steam 1110 and the hot water 1120 from the production well 1100 into gas 30 and liquid 640. The gas-liquid separation section 620 may introduce the gas 30 to the dry cyclone scrubber section 200. The gas-liquid separation section 620 may introduce the liquid 640 to the heating tank 610. The gas-liquid separation section 620 may add a scale inhibitor to the liquid 640 and introduce it to the heating tank 610.

[0021] The heating tank 610 heats the liquid 40 to be introduced into the wet cyclone scrubber section 100. The heating tank 610 may heat the liquid 40 using the liquid 640. The heating tank 610 in this example heats the liquid 540 by exchanging heat between the liquid 540 in the recovery tank 510 described later and the liquid 640. The heating tank 610 may introduce the liquid 40 obtained by heating the liquid 540 into the wet cyclone scrubber section 100. The heating tank 610 outputs the liquid 640 used in the heat exchange as a cooled liquid 630. The heating tank 610 may return the liquid 630 to the reinjection well 1200. Since the liquid 540 is a liquid with relatively few impurities such as scale, by introducing the liquid 40 obtained by heating the liquid 540 into the wet cyclone scrubber section 100, it is possible to suppress the generation of scale in the wet cyclone scrubber section 100 while reusing water resources. The scale refers to impurities such as silica contained in the liquid that have precipitated and solidified. In addition, by using the liquid 640 for heat exchange, the thermal energy of the liquid 640 can be effectively utilized. In addition, by introducing the heated liquid 40 into the wet cyclone scrubber section 100, the gas 30 can be prevented from being cooled by the liquid 40 in the wet cyclone scrubber section 100. Therefore, the energy loss of the gas 30 introduced into the power generation device 400 can be reduced.

[0022] The dry cyclone scrubber section 200 may treat the gas 30. In this example, the dry cyclone scrubber section 200 treats the gas 30 from the introduction section 600. In the dry cyclone scrubber section 200, relatively large suspended matter among fine dust particles in the gas 30 can be removed. In one example, the suspended matter includes silica. Treating the gas 30 refers to removing harmful substances contained in the gas 30.

[0023] The wet cyclone scrubber section 100 treats the gas 30 with the liquid 40. The wet cyclone scrubber section 100 may treat the gas 30 discharged from the dry cyclone scrubber section 200. The liquid 40 is introduced into the wet cyclone scrubber section 100. The liquid 40 may be introduced from an introduction section 600. The wet cyclone scrubber section 100 treats the gas 30 with the liquid 40.

[0024] The gas 30 may proceed from the dry cyclone scrubber section 200 to the wet cyclone scrubber section 100 in that order. That is, the gas 30 is processed in the dry cyclone scrubber section 200 and then the wet cyclone scrubber section 100. Since relatively large suspended solids are removed in the dry cyclone scrubber section 200 and then fine suspended solids are removed in the wet cyclone scrubber section 100, a reduction in pressure loss of the gas 30 can be suppressed with a simple structure. Also, the passage of fine suspended solids can be prevented.

[0025] The gas outlet section 300 is connected to the wet cyclone scrubber section 100. The wet cyclone scrubber section 100 outlets the gas 30 treated in the wet cyclone scrubber section 100 to the power generation device 400.

[0026] The power generating device 400 generates power using the gas 30. In this example, the power generating device 400 includes a turbine 410 and a generator 420. The generator 420 may generate power by rotating the blades of the turbine 410 using the gas 30. The blades of the turbine 410 are not shown in FIG. 1 .

[0027] The gas recovery section 500 may recover a liquid component contained in the gas 30 output by the power generation device 400. The gas recovery section 500 may be provided downstream of the turbine 410 in the traveling direction of the gas 30. The gas recovery section 500 may recover a liquid by cooling the vapor of the gas 30. In this example, the gas recovery section 500 has a recovery tank 510, a cooling tower 520, and a pump 530. In the gas recovery section 500, the gas 30 may be introduced into the recovery tank 510. The recovery tank 510 cools the vapor contained in the gas 30, thereby changing the phase of the vapor to a liquid. The recovery tank 510 may cool the gas 30 by performing heat exchange between the gas 30 and a cooling medium introduced therein. The cooling medium is, for example, water. The cooling tower 520 cools the cooling medium that has passed through the recovery tank 510. The cooling tower 520 may cool the cooling medium by air cooling using a fan or the like. The pump 530 circulates the cooling medium cooled by the cooling tower 520 to the recovery tank 510. The gas recovery section 500 may also recover condensed water 430 from the vicinity of the turbine 410. As described above, the liquid recovered from the gas 30 by the gas recovery section 500 and at least a part of the condensed water 430 may be used as the liquid 40 in the wet cyclone scrubber section 100. This makes it difficult for scale to occur in the wet cyclone scrubber section 100.

[0028] The liquid from the recovery tank 510 may be introduced into the reinjection well 1200. The reinjection well 1200 is a well that returns steam and hot water used for power generation to an underground geothermal reservoir. The liquid 540 from the recovery tank 510 may be introduced into the heating tank 610.

[0029] In this example, the geothermal power generation scrubber unit 1000 includes a swirling section 80. The structure of the swirling section 80 is omitted in FIG. 1. The swirling section 80 swirls the gas 30 in a predetermined swirling direction. The swirling section 80 improves the swirling force of the gas 30, and the mist in the gas 30 adheres to the inner wall of the reaction tower by centrifugal force, forming a liquid film, which is discharged as wastewater from the wet cyclone scrubber section 100. This improves the gas-liquid separation performance. In this example, the swirling section 80 is provided in the wet cyclone scrubber section 100.

[0030] 2 is a diagram showing an example of a wet cyclone scrubber section 100. The wet cyclone scrubber section 100 has a reaction tower 10 and a swirling section 80. The swirling section 80 in this example is provided inside the reaction tower 10. The wet cyclone scrubber section 100 may include a gas inlet pipe 32 and a liquid outlet pipe 20. In this example, the gas 30 is introduced into the reaction tower 10 from the dry cyclone scrubber section 200.

[0031] The reaction tower 10 has a gas inlet 11 through which the gas 30 is introduced, and a gas outlet 17 through which the gas 30 is discharged. A liquid 40 for treating the gas 30 is supplied to the reaction tower 10. The liquid 40 supplied to the reaction tower 10 treats the gas 30 inside the reaction tower 10. After treating the gas 30, the liquid 40 becomes a waste liquid 46.

[0032] The reaction tower 10 of this example has a side wall 15, a bottom surface 16, a gas treatment section 18, and a liquid outlet 19. The reaction tower 10 of this example is cylindrical. In this example, the gas outlet 17 is disposed at a position facing the bottom surface 16 in a direction parallel to the central axis of the cylindrical reaction tower 10. In this example, the side wall 15 and the bottom surface 16 are the inner surface and the bottom surface of the cylindrical reaction tower 10, respectively. The gas inlet 11 may be provided in the side wall 15. In this example, the gas 30 is introduced into the gas treatment section 18 after passing through the gas inlet 11 from the gas inlet pipe 32. In FIG. 2 and the like, the reaction tower 10 is shown as being transparent as appropriate.

[0033] The gas treatment section 18 is a space surrounded by the side wall 15, the bottom surface 16, and the gas outlet 17. The gas treatment section 18 contacts the side wall 15, the bottom surface 16, and the gas outlet 17. The gas treatment section 18 is a space for treating the gas 30 inside the reaction tower 10. The bottom surface 16 is a surface onto which the waste liquid 46 falls. The waste liquid 46 passes through the liquid outlet 19 and is then discharged into the liquid outlet pipe 20. Although omitted in FIG. 2, the waste liquid 46 may be introduced into the reinjection well 1200 via the liquid outlet 19 and the liquid outlet pipe 20.

[0034] In this specification, technical matters may be described using orthogonal coordinate axes of the X-axis, Y-axis, and Z-axis. In this specification, a plane parallel to the bottom surface 16 of the reaction tower 10 is defined as the XY plane, and a direction from the bottom surface 16 toward the gas exhaust port 17 (a direction perpendicular to the bottom surface 16) is defined as the Z axis. In this specification, a predetermined direction in the XY plane is defined as the X-axis direction, and a direction perpendicular to the X-axis in the XY plane is defined as the Y-axis direction.

[0035] The Z-axis direction may be parallel to the direction of gravity. When the Z-axis direction is parallel to the direction of gravity, the XY plane may be a horizontal plane. The Z-axis direction may be parallel to the horizontal direction. When the Z-axis direction is parallel to the horizontal direction, the XY plane may be parallel to the direction of gravity.

[0036] In this specification, a side view refers to a view of the wet cyclone scrubber unit 100 as seen from a direction perpendicular to the Z axis (a predetermined direction in the XY plane). In this specification, a side view refers to a view as seen from the side.

[0037] In the wet cyclone scrubber section 100, the gas 30 introduced into the reaction tower 10 advances in a direction from the gas inlet 11 to the gas outlet 17 (in the Z-axis direction in this example) while swirling inside the reaction tower 10. In this example, the gas 30 swirls within the XY plane when viewed from the gas outlet 17 to the bottom surface 16.

[0038] The reaction tower 10 has a liquid spraying section 90. The liquid spraying section 90 is provided between the gas inlet 11 and the gas outlet 17. The liquid spraying section 90 may be a part of the region between the gas inlet 11 and the gas outlet 17 in the traveling direction of the gas 30 (Z-axis direction). The liquid spraying section 90 may be the entire region of the reaction tower 10 when the reaction tower 10 is viewed in the direction from the gas outlet 17 to the bottom surface 16 (XY plane). The liquid spraying section 90 sprays the liquid 40 into the inside of the reaction tower 10. In FIG. 2, the range of the liquid spraying section 90 in the inside of the reaction tower 10 is indicated by a double-headed arrow.

[0039] The reaction tower 10 may have one or more trunk pipes 12 to which the liquid 40 is supplied, and one or more branch pipes 13. The reaction tower 10 may have one or more ejection parts 14 that eject the liquid 40. In this example, the ejection parts 14 are connected to the branch pipes 13, and the branch pipes 13 are connected to the trunk pipe 12.

[0040] In this example, the gas 30 travels in the inside of the reaction tower 10 from the gas inlet 11 to the gas outlet 17 while swirling in a predetermined swirling direction in the liquid spraying section 90. The traveling direction of the gas 30 from the gas inlet 11 to the gas outlet 17 in the inside of the reaction tower 10 is defined as a traveling direction E1. In this example, the traveling direction E1 of the gas 30 is parallel to the Z axis. That is, in this example, the gas 30 travels in the traveling direction E1 in a side view of the reaction tower 10, and swirls in the swirling direction as viewed from the traveling direction E1.

[0041] The swirling section 80 has an inlet end 102 into which the gas 30 is introduced, and an outlet end 104 from which the gas 30 is discharged. The gas 30 advances inside the swirling section 80 in a direction from the inlet end 102 to the outlet end 104. The direction in which the gas 30 advances from the inlet end 102 to the outlet end 104 is defined as an advancement direction E2. In this example, the advancement direction E2 is parallel to the Z-axis. That is, in this example, the gas 30 advances in the advancement direction E2 in a side view of the swirling section 80, and swirls in a predetermined swirling direction as viewed from the advancement direction E2.

[0042] The introduction end 102 is the most upstream end of the gas 30 in the traveling direction E2 of the gas 30. The introduction end 102 may be an end on the inlet side of the gas 30 in the swirling section 80. The introduction end 102 may be a planar region including the most upstream end of the gas 30. The planar region may intersect with the traveling direction E2 of the gas 30. The gas 30 may pass through the planar region.

[0043] The outlet end 104 is the most downstream end of the gas 30 in the traveling direction E2 of the gas 30. The introduction end 102 may be an end on the outlet side of the gas 30 in the swirl section 80. The outlet end 104 may be a planar region including the most downstream end of the gas 30. The planar region may intersect with the traveling direction E2 of the gas 30. The gas 30 may pass through the planar region.

[0044] The swirl section 80 is disposed downstream of the liquid spray section 90 in the gas flow path including the wet cyclone scrubber section 100 and the gas outlet section 300. In this example, the swirl section 80 is provided downstream of the liquid spray section 90 in the traveling direction of the gas 30 (the Z-axis direction in this example). In this example, the swirl section 80 is provided between the liquid spray section 90 and the gas discharge port 17 in the Z-axis direction. As will be described later, the swirl section 80 increases the speed of the gas 30.

[0045] The liquid 40 is hot water 1120 from a production well 1100. Thus, the liquid 40 may include silica, sulfides, etc. The liquid 40 may also include a scale inhibitor.

[0046] Fig. 3 is a perspective view showing an example of the swirling section 80 in Fig. 2. The swirling section 80 of this example is provided downstream of the gas 30 from the liquid spraying section 90 (see Fig. 2) in the traveling direction E2 of the gas 30 inside the reaction tower 10. The swirling section 80 of this example is provided between the liquid spraying section 90 and the gas outlet 17 in the traveling direction E2 of the gas 30.

[0047] The swirling section 80 swirls the gas 30 in a predetermined swirling direction when viewed in the direction from the outlet end 104 to the inlet end 102 (Z-axis direction). In this example, the swirling direction in the reaction tower 10 and the swirling direction in the swirling section 80 are the same.

[0048] The gas 30 swirled by the swirling section 80 may swirl around a predetermined central axis 106 when viewed from the traveling direction E2 of the gas 30. In Fig. 3, this central axis 106 is indicated by a dashed line.

[0049] When viewed from the traveling direction E2 of the gas 30, the central axis 106 may or may not be parallel to the central axis of the cylindrical reaction tower 10. In this example, the central axis 106 is parallel to the central axis of the reaction tower 10.

[0050] The position of the central axis 106 when viewed from the traveling direction E2 of the gas 30 may or may not match the position of the central axis of the reaction tower 10 when viewed from the traveling direction E1 (see FIG. 2) of the gas 30. In this example, the position of the central axis 106 when viewed from the traveling direction E2 and the position of the central axis of the reaction tower when viewed from the traveling direction E1 match.

[0051] The swirl section 80 of this example has a support pillar 81 and a wing section 82. The support pillar 81 may be disposed at the position of a central axis 106 when viewed from the traveling direction E2 of the gas 30. The support pillar 81 may be cylindrical with a central axis parallel to the central axis 106. When viewed from the traveling direction E2 of the gas 30, the position of the central axis of the cylindrical support pillar 81 may coincide with the position of the central axis 106.

[0052] In this example, the wing portion 82 is connected to the support 81. The swivel portion 80 may have a plurality of wing portions 82. The swivel portion 80 in this example has eight wing portions 82 (wing portion 82-1 to wing portion 82-8).

[0053] Wing portion 82 may be plate-shaped having a front surface 83 and a back surface 84. In this example, front surface 83 of wing portion 82 is a surface visible when viewed from the traveling direction E2 of gas 30, and back surface 84 of wing portion 82 is a surface visible when viewed from the opposite direction to traveling direction E2. Wing portions 82-1 to 82-8 in this example have front surfaces 83-1 to 83-8, respectively. Wing portions 82-1 to 82-8 in this example have back surfaces 84-1 to 84-8, respectively. Back surface 84 is inclined at a predetermined angle with respect to the XY plane. Front surface 83 may be inclined at a predetermined angle with respect to the XY plane.

[0054] The gas 30 proceeding to the gas discharge port 17 while swirling in the liquid spraying section 90 passes through the liquid spraying section 90 and is then introduced into the swirling section 80. The gas 30 introduced into the swirling section 80 passes through the inside of the swirling section 80 and is then discharged from the swirling section 80. In this example, the gas 30 passes between the back surface 84 of one wing section 82 and the front surface 83 of the other wing section 82 adjacent to the one wing section 82. Taking the wing sections 82-3 and 82-4 as an example, the gas 30 passes between the back surface 84-4 of the wing section 82-4 and the front surface 83-3 of the wing section 82-3. In FIG. 3, the flow path of the gas 30 is indicated by a thick arrow.

[0055] The swirl section 80 increases the velocity of the gas 30 introduced into the swirl section 80 or controls the direction of travel of the gas 30. The swirl section 80 may both increase the velocity and control the direction of travel.

[0056] The swirl section 80 of this example increases the velocity of the gas 30 introduced into the swirl section 80. The swirl section 80 of this example increases the velocity of the gas 30 inside the swirl section 80. The velocity of the gas 30 before being introduced into the swirl section 80 is velocity V1. The velocity of the gas 30 after being led out of the swirl section 80 is velocity V2. In this example, velocity V2 is greater than velocity V1. The thick arrow shown in FIG. 3 is an example of the flow path direction of the gas 30 passing through the swirl section 80.

[0057] In this example, when viewed from the traveling direction E2 of the gas 30, the gas 30 travels from the inlet end 102 to the outlet end 104 while swirling around the support 81. The velocity of the gas 30 refers to the tangential velocity of the flow path of the gas 30 at any position in the XY plane in the flow of the gas 30 when viewed from the traveling direction E2 of the gas 30.

[0058] Under standard conditions of a standard temperature of 0° C. and a standard pressure of 1 atmosphere, the velocity V1 may be 5 m / s or more and 25 m / s or less, or may be 10 m / s or more and 20 m / s or less, and the velocity V2 may be 30 m / s or more and 50 m / s or less, or may be 35 m / s or more and 45 m / s or less.

[0059] Geothermal power generation facilities are often installed in mountainous regions, and large installation areas require high civil engineering costs. In this example, the swirl section 80 is provided inside the reaction tower 10. This reduces the installation area of ​​the facility and the costs of connecting piping.

[0060] In this embodiment, the swirl section 80 is provided in the large diameter portion of the reaction tower 10. The large diameter portion of the reaction tower 10 is the portion having the largest cross-sectional area among the XY plane cross sections of the reaction tower 10. Since the swirl section 80 is provided in the large diameter portion of the reaction tower 10, the cross-sectional area through which the gas 30 passes can be increased, and the pressure loss can be reduced.

[0061] 4 is a diagram showing another example of the wet cyclone scrubber section 100 according to an embodiment of the present invention. The wet cyclone scrubber section 100 of this example further includes one or more liquid recovery sections 51 for recovering the liquid 40 that has treated the gas 30. The wet cyclone scrubber section 100 of this example differs from the wet cyclone scrubber section 100 shown in FIG. 2 in this respect. The liquid recovery section 51 is provided downstream of the gas 30 (gas outlet 17 side) from the swirl section 80 in the traveling direction E1 of the gas 30. The liquid recovery section 51 of this example is provided on the side wall 15 of the reaction tower 10.

[0062] The wet cyclone scrubber section 100 of this embodiment is provided with a swirling section 80 downstream of the gas 30 from the liquid spraying section 90 in the traveling direction of the gas 30. The swirling section 80 of this embodiment increases the speed of the gas 30 after passing through the liquid spraying section 90. Therefore, the mist liquid 40 traveling from the liquid spraying section 90 to the gas exhaust port 17 along with the gas 30 is likely to accumulate on the side wall 15 downstream of the swirling section 80. When the mist liquid 40 accumulates on the side wall 15, the liquid 40 is likely to become a liquid film. The liquid recovery section 51 recovers the liquid 40 accumulated on the side wall 15.

[0063] In this example, one liquid recovery section 51 is provided around the circumferential direction of the side wall 15. In this example, the liquid recovery section 51 includes a recovery chamber 55 that recovers the liquid 40 that has treated the gas 30.

[0064] FIG. 5 is a diagram showing an example of the liquid recovery section 51 shown in FIG. 4 when the reaction tower 10 is viewed from the traveling direction E1 of the gas 30. In this example, one liquid recovery section 51 is disposed in a circumferential shape in the circumferential direction of the side wall 15 at a position overlapping with the side wall 15 when viewed from the traveling direction E1 of the gas 30. In FIG. 5, the position of the liquid recovery section 51 when viewed from the traveling direction E1 of the gas 30 is indicated by hatching. The liquid recovery section 51 may be disposed so as to straddle the side wall 15 from the inside to the outside of the reaction tower 10 when viewed from the traveling direction E1 of the gas 30. In FIG. 5, the position of the side wall 15 when viewed from the traveling direction E1 of the gas 30 is indicated by a dashed line.

[0065] Fig. 6 is a diagram showing an example of the AA' cross section in Fig. 5. The AA' cross section is an XZ cross section passing through the gas treatment section 18, the side wall 15 and the liquid recovery section 51 of the reaction tower 10.

[0066] In this example, the liquid recovery section 51 has a first introduction section 54, a recovery chamber 55, and a drainage section 53. The first introduction section 54 and the recovery chamber 55 may be provided inside and outside the reaction tower 10, respectively. In Fig. 6, the ranges of the first introduction section 54 and the recovery chamber 55 in the XZ cross section are indicated by double arrows. The drainage section 53 may be provided on a bottom surface 57 of the recovery chamber 55.

[0067] In this example, the liquid recovery section 51 is provided with a first opening 52 and an opening 56. The liquid 40 obtained by treating the gas 30 is introduced into the first opening 52. In this example, the first opening 52 is provided inside the reaction tower 10. In this example, the gas treatment section 18 of the reaction tower 10 and the first introduction section 54 are communicated with each other through the first opening 52. The first opening 52 may be provided at the end of the first introduction section 54 on the gas inlet 11 side. In this example, the first introduction section 54 and the recovery chamber 55 are communicated with each other through the opening 56. The position of the opening 56 in the X-axis direction may coincide with the position of the side wall 15 in the X-axis direction. The opening 56 may connect the inside of the liquid recovery section 51 to the reaction tower 10. In this example, the liquid recovery section 51 is provided in the reaction tower 10, but if the liquid recovery section 51 is provided in the gas outlet section 300 (see Figures 10 and 12), the opening 56 may connect the inside of the liquid recovery section 51 to the gas outlet section 300.

[0068] As described above, the liquid 40 treats the gas 30 in the liquid spray section 90 (see FIG. 2). The liquid 40 that has treated the gas 30 may be accompanied by atomized liquid 40. As described above, when the swirling section 80 is provided in the reaction tower 10, the gas 30 swirled by the swirling section 80 tends to pass through the outer periphery side (side wall 15 side) of the reaction tower 10.

[0069] The mist-like liquid 40 entrained in the gas 30 swirled by the swirling unit 80 is referred to as droplets 42. The droplets 42 are likely to turn into a liquid film on the side wall 15. The droplets 42 that have turned into a liquid film on the side wall 15 are referred to as a liquid film 44. In FIG. 6, the droplets 42 and the liquid film 44 are indicated by hatching. The gas 30 swirled by the swirling unit 80 advances in the traveling direction E1 of the gas 30 (from the gas inlet 11 side to the gas outlet 17 side). For this reason, the liquid film 44 is likely to advance along the side wall 15 from the gas inlet 11 side to the gas outlet 17 side.

[0070] In this example, the liquid film 44 proceeding in the proceeding direction E1 of the gas 30 is recovered from the first opening 52 to the liquid recovery part 51. In this example, the first opening 52 is provided at the end of the first introduction part 54 on the gas inlet 11 side, so that the liquid recovery part 51 can easily recover the liquid film 44 proceeding along the side wall 15 from the gas inlet 11 side to the gas exhaust port 17 side.

[0071] The liquid film 44 advances along the side wall 15 of the reaction tower 10 from the gas inlet 11 side to the gas outlet 17 side, and is then recovered from the opening 56 into the recovery chamber 55. The liquid film 44 recovered into the recovery chamber 55 advances along the side wall 69 of the recovery chamber 55 from the gas outlet 17 side to the gas inlet 11 side. A drainage section 53 is provided on the bottom surface 57 of the recovery chamber 55. The liquid film 44 that advances along the side wall 69 of the recovery chamber 55 from the gas outlet 17 side to the gas inlet 11 side is drained from the drainage section 53. The liquid film 44 may be introduced into the reinjection well 1200.

[0072] The wet cyclone scrubber section 100 of this example further includes a liquid recovery section 51. Therefore, in the wet cyclone scrubber section 100 of this example, the liquid recovery section 51 can recover the liquid film 44. Therefore, compared with a case in which the wet cyclone scrubber section 100 does not include the liquid recovery section 51, the liquid 40 is less likely to be entrained in the gas 30 and discharged to the turbine 410 and the generator 420 outside the wet cyclone scrubber section 100. Therefore, the wet cyclone scrubber section 100 of this example is less likely to corrode the steel materials, etc., of the turbine 410 and the generator 420.

[0073] Since the liquid 40 contains silica, if the liquid recovery section 51 is made of metal or the like, scale is likely to occur. Therefore, the liquid recovery section 51 may be made of a protective material. That is, the entire liquid recovery section 51 may be made of a protective material. The protective material is a material that has a weaker hydrogen bonding force than the material that forms the side wall 15 (i.e., the reaction tower 10). Alternatively, the protective material is a material that has a weaker electric attraction than the material that forms the side wall 15. By forming the liquid recovery section 51 from a material that has a relatively weak hydrogen bonding force or a weak electric attraction, it is possible to suppress the adhesion of silica and prevent the occurrence of scale. In addition, the liquid recovery section 51 may be partially formed of a protective material. For example, only the recovery chamber 55 may be formed of a protective material. The protective material may be a resin. The protective material may be an engineering plastic having high heat resistance, corrosion resistance, and structural strength, such as fluororesin, polyvinyl chloride, polyethylene, and polypropylene. The protective material may also be a carbon-based coat such as DLC (diamond-like carbon). The protective material may be a paint.

[0074] Furthermore, the surface of liquid recovery section 51 may be coated with a protective material. The inner wall of liquid recovery section 51 may be coated with a protective material. The inner wall of liquid recovery section 51 is, for example, wall 115 inside recovery chamber 55. The outer wall of liquid recovery section 51 may be coated with a protective material. The outer wall of liquid recovery section 51 is, for example, wall 116 outside recovery chamber 55. The surface coating can also suppress adhesion of silica and prevent the generation of scale.

[0075] The surface of the opening 56 may also be coated with a protective material. "The opening 56 is coated with a protective material" may mean that the side wall 15 in the vicinity of the opening 56 is coated with a protective material. "The opening 56 is coated with a protective material" may mean that the side wall 69 in the vicinity of the opening 56 is coated with a protective material. Since a large amount of liquid 40 flows in the vicinity of the opening 56, adhesion of silica can be suppressed and the generation of scale can be prevented.

[0076] Figures 7 and 8 are diagrams showing another example of the swivel portion 80 in Figure 2. In Figures 7 and 8, the swivel portion 80 is coated with the protective material described above. In Figures 7 and 8, the multiple wing portions 82 are coated with the protective material. In Figures 7 and 8, the area coated with the protective material is indicated by hatching.

[0077] 7, the wing portion 82 of the swirl portion 80 is coated with a protective material. In this example, the entire wing portion 82 of the swirl portion 80 is coated with the protective material. By coating the wing portion 82 of the swirl portion 80 with the protective material, it is possible to prevent the generation of scale.

[0078] 8, the vane portion 82 of the swirl portion 80 is coated with a protective material only on the upstream side in the traveling direction E1 of the gas 30. Since scale is more likely to occur on the upstream side than on the downstream side, this configuration can also prevent scale from occurring.

[0079] 2, the liquid spray part 90 may be made of a protective material. In particular, the spray part 14 is prone to scale generation, so the spray part 14 may be made of a protective material. This configuration can also prevent scale generation.

[0080] Furthermore, the vicinity of the opening surface of the jetting part 14 from which the liquid 40 is jetted may be coated with a protective material. Only the inside of the jetting part 14 may be coated with a protective material. The inside of the jetting part 14 may be the part that comes into direct contact with the liquid 40. Since the fine dust contains soil and sand, the outside of the jetting part 14 is preferably made of a durable material such as metal.

[0081] Fig. 9 is a diagram showing an example of a scrubber unit for geothermal power generation 2000 according to another embodiment of the present invention. The scrubber unit for geothermal power generation 2000 in Fig. 9 differs from the scrubber unit for geothermal power generation 1000 in Fig. 1 in that a swirl section 80 is provided in the gas outlet section 300. Other configurations of the scrubber unit for geothermal power generation 2000 may be the same as those of the scrubber unit for geothermal power generation 1000.

[0082] FIG. 10 is a diagram showing an example of the swirling section 80 in the geothermal power generation scrubber apparatus 2000. In this example, the swirling section 80 and the liquid recovery section 51 are provided in the gas outlet section 300. In FIG. 10, the traveling direction of the gas 30 in the gas outlet section 300 is designated as E3. In this example, the traveling direction E3 of the gas 30 in the gas outlet section 300 is parallel to the Z-axis direction. The traveling direction E3 of the gas 30 in the gas outlet section 300 is parallel to the traveling direction E2. The side wall of the gas outlet section 300 is designated as side wall 315.

[0083] In this example, the swirling section 80 is provided in the gas outlet section 300, which has a smaller diameter than the reaction tower 10. Therefore, the swirling section 80 can be made smaller, which allows for cost reduction. Furthermore, by making the section smaller, the swirling radius becomes smaller, and a stronger swirling force can be obtained.

[0084] Fig. 11 is a diagram showing an example of a scrubber unit for geothermal power generation 3000 according to another embodiment of the present invention. The scrubber unit for geothermal power generation 3000 in Fig. 11 differs from the scrubber unit for geothermal power generation 2000 in Fig. 9 in the position where the scrubber unit 80 is provided. Other configurations of the scrubber unit for geothermal power generation 3000 may be the same as those of the scrubber unit for geothermal power generation 2000.

[0085] In FIG. 11, the axis of the swirling part 80 is designated as A1. The axis A1 of the swirling part 80 may be the central axis 106 of the swirling part 80 (see FIG. 12). The position of the axis A1 of the swirling part 80 may coincide with the position of the central axis 106 of the support 81 (see FIG. 12). Furthermore, the rotation axis of the turbine 410 is designated as A2. The rotation axis of the turbine 410 is the axis about which the blades of the turbine 410 rotate. The blades of the turbine 410 are not shown in FIG. 11.

[0086] In this example, the swirl section 80 is provided in the gas discharge section 300, and the axis A1 of the swirl section 80 and the rotation axis A2 of the turbine 410 are provided coaxially. In this example, the axis A1 of the swirl section 80 and the rotation axis A2 of the turbine 410 are parallel to the X-axis direction. By making the axis A1 of the swirl section 80 and the rotation axis A2 of the turbine 410 coaxial, the energy loss of the geothermal steam can be reduced. In addition, by disposing the swirl section 80 and the reaction tower 10 apart, the disposition of the geothermal power generation scrubber unit 3000 can be changed more flexibly. In addition, the axis A1 of the swirl section 80 and the rotation axis A2 of the turbine 410 being provided coaxially does not necessarily mean that the axis A1 of the swirl section 80 and the rotation axis A2 of the turbine 410 are provided completely coaxially. For example, if the axis A1 of the swirling part 80 and the rotation axis A2 of the turbine 410 are parallel and at least a portion of the swirling part 80 and the turbine 410 are arranged on a straight line (in this example, on the X-axis direction), the axis A1 of the swirling part 80 and the rotation axis A2 of the turbine 410 may be coaxial.

[0087] FIG. 12 is a diagram showing an example of the swirling section 80 in the geothermal power generation scrubber apparatus 3000. In this example, the swirling section 80 and the liquid recovery section 51 are provided in the gas outlet section 300. In FIG. 12, the traveling direction of the gas 30 in the gas outlet section 300 is E3. In this example, the traveling direction E3 of the gas 30 in the gas outlet section 300 is parallel to the X-axis direction. In addition, the traveling direction E3 of the gas 30 in the gas outlet section 300 is parallel to the traveling direction E2. In FIG. 12, the central axis 106 of the swirling section 80 is shown by a dashed line. In FIG. 12, the axis A1 of the swirling section 80 coincides with the position of the central axis 106.

[0088] FIG. 13 is a diagram showing another example of the wet cyclone scrubber section 100 in the scrubber apparatus 1000 for geothermal power generation. As in FIG. 2, the wet cyclone scrubber section 100 includes a reaction tower 10. The reaction tower 10 includes a gas treatment section 18, which is an internal space. The scrubber apparatus 1000 for geothermal power generation may include a gas inlet pipe 32 and a liquid outlet pipe 20. In this example, the gas 30 is introduced into the reaction tower 10 from the dry cyclone scrubber section 200. In this example, the internal configuration of the reaction tower 10 may be the same as that in FIG. 2.

[0089] In this example, the gas inlet 11 is provided on the side surface at a position in the Z-axis direction closer to the bottom surface 16 than the gas outlet 17 in a side view. A portion of the reaction tower 10 close to the liquid outlet 19 with respect to the gas inlet 11 is referred to as a liquid outlet region 702.

[0090] The wet cyclone scrubber section 100 of this example includes a heating section 700. The heating section 700 is provided in at least a part of the liquid discharge area 702 and the part of the liquid discharge pipe 20 connected downstream from the liquid discharge port 19, and heats the waste liquid 46. The heating section 700 may include a first heating section that heats the liquid discharge area 702 of the reaction tower 10 and a second heating section that heats the part of the liquid discharge pipe 20. In this example, the heating section 700 may heat at least a part of the liquid discharge area 702 and the liquid discharge pipe 20 of the wet cyclone scrubber section 100 by geothermal water 713. The geothermal water 713 may be hot water 1120 pumped from the production well 1100, or may be a liquid obtained by diluting the hot water 1120 and adjusting the temperature as necessary.

[0091] The heating section 700 includes a heating pipe 710 and a pump 720. The heating pipe 710 may include a first heating pipe 711 and a second heating pipe 712. The first heating pipe 711 is provided in the liquid discharge region 702 of the reaction tower 10 so as to cover the side wall 15 and the bottom surface 16 of the reaction tower 10 from the outside of the reaction tower 10. On the other hand, the second heating pipe 712 is provided so as to cover the side surface of the liquid discharge pipe 20 from the outside of the liquid discharge pipe 20. The first heating pipe 711 and the second heating pipe 712 may be in communication with each other. The heating section 700 may have at least one of the first heating pipe 711 and the second heating pipe 712. The pump 720 circulates the geothermal water 713 in the heating pipe 710. The heating section 700 may heat the waste liquid 46 to 70° C. or more, 80° C. or more, or 100° C. or more.

[0092] In this way, the heating unit 700 heats at least a part of the liquid discharge area 702 of the reaction tower 10 and the liquid discharge pipe 20, thereby preventing the precipitation of fine suspended matter in the waste liquid 46, i.e., silica, calcium, aluminum, magnesium, etc. As a result, it is possible to prevent the generation of "scale" and the clogging of the flow path of the waste liquid 46. In particular, when the waste liquid 46 is a silica solution, it is possible to reduce the generation of silica scale in which silica is precipitated.

[0093] The heating section 700 may include a measuring section 730 and a geothermal water temperature adjusting section 722. In one example, the measuring section 730 may measure the concentration or composition of impurities (suspended matter) in the gas 30, or may measure the concentration or composition of impurities (suspended matter) in the effluent 46. In one example, the measuring section 730 may measure the concentration of silica in the gas 30, or may measure the concentration of silica in the effluent 46. Note that the measurement of the concentration or composition in the measuring section 730 can utilize conventional technology, and therefore detailed description thereof will be omitted.

[0094] The geothermal water temperature adjusting unit 722 may change the temperature at which the effluent 46 is heated according to the measurement result by the measuring unit 730. The geothermal water temperature adjusting unit 722 may adjust the temperature of the geothermal water 713 by selecting the geothermal water 713 collected at a different collection position according to the measurement result by the measuring unit 730. The heating unit 700 may change the heating temperature of the effluent 46 based on the composition of impurities in the gas 30 or the effluent. The heating unit 700 may also change the heating temperature of the effluent 46 based on the concentration of silica in the gas 30 or the effluent 46. In one example, the higher the concentration of silica, the easier it is for silica to precipitate, so the heating temperature may be increased to suppress the precipitation of silica. Alternatively, when the precipitation temperature at which the precipitation of suspended solids begins is determined according to the composition, the heating temperature may be increased so that the effluent 46 is at or above the precipitation temperature. However, the heating unit 700 may be configured without the measuring unit 730 and the geothermal water temperature adjusting unit 722. All surfaces inside the wet cyclone scrubber section 100 that come into contact with the geothermal steam may be coated with the protective material described above. Also, all surfaces that come into contact with the effluent 46 may be coated with the protective material. Coating with the protective material can suppress the precipitation of silica.

[0095] Fig. 14 is a diagram showing another example of the wet cyclone scrubber section 100 in the geothermal power generation scrubber apparatus 1000. The structure of the wet cyclone scrubber section 100 shown in Fig. 14 is similar to the structure of the wet cyclone scrubber section 100 shown in Fig. 13 except for the configuration of the heating section 700.

[0096] The heating section 700 shown in FIG. 14 is also provided in at least a part of the liquid discharge area 702 and the part of the liquid discharge pipe 20 connected downstream from the liquid discharge port 19, and heats the waste liquid 46. The heating section 700 in this example is provided in both the liquid discharge area 702 and the liquid discharge pipe 20 connected downstream from the liquid discharge port 19. The heating section 700 may include a first heating section that heats the liquid discharge area 702 of the reaction tower 10 and a second heating section that heats a part of the liquid discharge pipe 20. In this example, the heating section 700 includes a heater section 740 and a heater power supply 750. The heater section 740 heats at least a part of the liquid discharge area 702 and the liquid discharge pipe 20 of the wet cyclone scrubber section 100. The heater section 740 may be an electric heater or an infrared heater. In this example, the heater section 740 is an electric heater.

[0097] The heater section 740 may include a plurality of heaters. In one example, the heater section 740 may include a first heater section 741 and a second heater section 742. The first heater section 741 may be provided in the liquid discharge region 702 of the reaction tower 10 so as to cover the side wall 15 and the bottom surface 16 of the reaction tower 10 from the outside of the reaction tower 10. On the other hand, the second heater section 742 is provided so as to cover the side surface of the liquid discharge pipe 20 from the outside of the liquid discharge pipe 20. The first heater section 741 and the second heater section 742 may be connected in series or in parallel. Note that the heating section 700 may have at least one of the first heater section 741 and the second heater section 742. The heater power supply 750 supplies power to the heater section 740. In one example, the first heater section 741 and the second heater section 742 are electrical resistors, and Joule heat is generated when a current flows through them. In this example, the heating section 700 may heat the drainage liquid 46 to 70° C. or higher, 80° C. or higher, or 100° C. or higher.

[0098] In this way, the heating unit 700 heats at least a part of the liquid discharge area 702 of the reaction tower 10 and the liquid discharge pipe 20, thereby preventing the precipitation of minute suspended matter in the waste liquid 46, i.e., silica, calcium, aluminum, magnesium, etc., and preventing the generation of "scale" and the clogging of the flow path of the waste liquid 46. In particular, when the waste liquid is a silica solution, the precipitation of silica can be prevented.

[0099] The heating unit 700 may include a measuring unit 730 and a heater control unit 752. The measuring unit 730 is the same as that shown in FIG. 13, and the heater control unit 752 may change the temperature at which the effluent 46 is heated according to the measurement result by the measuring unit 730. The heater control unit 752 may adjust the heating temperature by adjusting the power supplied from the heater power source 750 to the heater unit 740 according to the measurement result by the measuring unit 730. As a result, the heating unit 700 may change the heating temperature of the effluent 46 based on the composition of impurities in the gas 30 or the effluent. The heating unit 700 may also change the heating temperature of the effluent 46 based on the concentration of silica in the gas 30 or the effluent. The configuration shown in FIG. 14 can also suppress the precipitation of silica due to a decrease in the temperature of the effluent.

[0100] FIG. 15 is a diagram showing another example of the wet cyclone scrubber section 100 in the geothermal power generation scrubber apparatus 1000. The wet cyclone scrubber section 100 of this example includes an agent introduction section 800 for causing the effluent 46 to contain an agent 813. In addition, in FIG. 15, the heating section 700 is omitted. Except for these points, the structure of the wet cyclone scrubber section 100 is similar to the structure of the wet cyclone scrubber section 100 shown in FIG. 13 and FIG. 14. Note that the wet cyclone scrubber section 100 may include both the agent introduction section 800 and the heating section 700.

[0101] The drug introduction section 800 causes the drainage liquid 46 to contain a drug 813. The drug 813 may be a drug that adjusts the drainage liquid 46 to be acidic. In particular, the drug 813 may adjust the hydrogen ion exponent (pH) of the drainage liquid 46 to 5 or less. The drug 813 may contain various acids such as HCl used to adjust the hydrogen ion exponent. In the example shown in FIG. 15, the drug introduction section 800 includes a drug introduction tube 810, a pump 820, a drug container 822, a drug amount adjustment section 824, and a measurement section 830.

[0102] In this example, the inner surface of the reaction tower 10 may be formed of a material resistant to the chemical 813. The chemical introduction pipe 810 may penetrate the side of the reaction tower 10. The chemical introduction pipe 810 introduces the chemical 813 into the reaction tower 10. The chemical 813 introduced into the reaction tower 10 through the chemical introduction pipe 810 is included in the waste liquid 46 stored on the bottom surface 16 in the reaction tower 10. As a result, the hydrogen ion exponent of the waste liquid 46 is adjusted. The adjusted waste liquid is introduced into the reinjection well 1200 through the liquid outlet 19 and the liquid discharge pipe 20. Note that the waste liquid 46 may be neutralized by a neutralizing agent before being introduced into the reinjection well 1200.

[0103] In this way, by adjusting the hydrogen ion potential of the waste liquid 46, it is possible to suppress the formation of "scale" due to precipitation of minute suspended solids in the waste liquid 46, i.e., silica, calcium, aluminum, magnesium, etc. As a result, it is possible to prevent the drainage flow path from being clogged with scale. In particular, when the waste liquid is a silica solution, it is possible to reduce the precipitation of silica.

[0104] The measuring unit 830 is the same as the measuring unit 730 in FIG. 13. Therefore, repeated description will be omitted. The drug amount adjusting unit 824 adjusts the hydrogen ion exponent (pH) of the effluent 46 according to the measurement result by the measuring unit 830. Specifically, the drug amount adjusting unit 824 adjusts the concentration or amount of the drug 813 to be mixed with the effluent 46. In one example, the drug 813 whose amount or concentration has been adjusted is temporarily stored in the drug container 822. The pump 820 injects the drug 813 in the drug container 822 into the reaction tower 10 through the drug introduction pipe 810. As a result, the drug introduction unit 800 may change the hydrogen ion exponent of the effluent 46 based on the composition of impurities in the gas 30 or the effluent. The drug introduction unit 800 may also change the hydrogen ion exponent of the effluent 46 based on the concentration of silica in the gas 30 or the effluent. However, the drug delivery section 800 does not necessarily have to include the measurement section 830 and the drug amount adjustment section 824 .

[0105] FIG. 16 is a diagram showing another example of the wet cyclone scrubber section 100 in the geothermal power generation scrubber apparatus 1000. In FIG. 16, the chemical introduction pipe 810 is connected to the trunk pipe 12 that introduces the liquid 40 into the reaction tower 10. As a result, the hydrogen ion index of the liquid 40 is adjusted upstream of where the liquid 40 is sprayed. As a result, the hydrogen ion index of the waste liquid 46 generated by the liquid 40 taking in impurities is also adjusted. The other configurations are the same as those of the wet cyclone scrubber section 100 in the scrubber apparatus shown in FIG. 15. Therefore, detailed explanations will be omitted.

[0106] FIG. 17 is a diagram showing another example of the wet cyclone scrubber section 100 in the geothermal power generation scrubber apparatus 1000. In FIG. 17, the chemical introduction pipe 810 is connected to the liquid discharge pipe 20 connected downstream from the liquid discharge port 19. This allows the hydrogen ion exponent of the wastewater 46 downstream from the connection between the chemical introduction pipe 810 and the liquid discharge pipe 20 to be adjusted. It is desirable that the chemical introduction pipe 810 is connected to the liquid discharge pipe 20 near the liquid discharge port 19. In one example, it is desirable that the chemical introduction pipe 810 is connected to the liquid discharge pipe 20 in a region within 1 m from the liquid discharge port 19.

[0107] The hydrogen ion exponent of the waste liquid 46 can also be adjusted by the configurations shown in Figs. 16 and 17. This makes it possible to suppress the formation of "scale" due to precipitation of minute suspended solids in the waste liquid 46, i.e., silica, calcium, aluminum, magnesium, etc. As a result, clogging of the flow path of the waste liquid by scale can be prevented. In particular, when the waste liquid is a silica solution, precipitation of silica can be reduced. Also, precipitated silica, etc. can be removed.

[0108] It is possible to use the treatment by the heating unit 700 shown in Fig. 13 and Fig. 14 together with the treatment by the chemical introduction unit 800 shown in Fig. 15 to Fig. 17. In this case, in one example, the heating unit 700 continuously heats the waste liquid 46 steadily during the operation of geothermal power generation, and the chemical introduction unit 800 may treat the waste liquid 46 to temporarily contain the chemical 813 when the composition of impurities or the concentration of silica in the gas 30 or the waste liquid 46 meets a predetermined condition. This makes it possible to suppress the generation of scale by the heat treatment so as not to damage the inner surface of the liquid discharge pipe 20 and the reaction tower 10 through which the waste liquid 46 flows as much as possible, while the chemical treatment can be performed only in the case of the composition of impurities or the concentration of silica that causes scale to be generated even by the heat treatment.

[0109] FIG. 18 is a diagram showing another example of the wet cyclone scrubber section 100 in the geothermal power generation scrubber apparatus 1000. The wet cyclone scrubber section 100 in FIG. 18 includes a diluent supply section 900. In addition, in FIG. 18, the heating section 700 and the chemical introduction section 800 are omitted. Except for these points, the structure of the wet cyclone scrubber section 100 is similar to the structure of the wet cyclone scrubber section 100 shown in FIG. 13 to FIG. 17. The wet cyclone scrubber section 100 may include both the diluent supply section 900 and the heating section 700. The wet cyclone scrubber section 100 may include both the diluent supply section 900 and the chemical introduction section 800.

[0110] The diluent supply unit 900 shown in FIG. 18 supplies a diluent 913 for diluting the wastewater 46. The diluent supply unit 900 is provided in at least a part of the liquid discharge area 702 of the reaction tower 10 and a part of the liquid discharge pipe 20 connected downstream from the liquid discharge port 19. The diluent 913 may be, for example, water. The diluent supply unit 900 may collect river water or the like as the diluent 913. In the example shown in FIG. 18, the diluent supply unit 900 may include a diluent introduction pipe 910, a pump 920, an adjustment valve 922, a dilution amount control unit 924, and a well condition measurement unit 930.

[0111] The diluent introduction pipe 910 may penetrate the side surface of the reaction tower 10. The diluent introduction pipe 910 introduces the diluent 913 into the reaction tower 10. The diluent introduction pipe 910 is preferably provided in the liquid discharge area 702 of the reaction tower 10. If the diluent 913 is introduced into the reaction tower 10 on the gas discharge port 17 side, there is a risk that the diluent 913 will take away heat from the gas 30. Therefore, it is advantageous to provide the diluent introduction pipe 910 in the liquid discharge area 702 of the reaction tower 10.

[0112] The diluent 913 introduced into the reaction tower 10 through the diluent introduction pipe 910 dilutes the waste liquid 46 stored on the bottom surface 16 in the reaction tower 10. As a result, the concentrations of impurities such as silica, calcium, aluminum, and magnesium in the waste liquid 46 can be reduced. Therefore, the precipitation of silica, calcium, aluminum, magnesium, and the like to form "scale" can be suppressed.

[0113] The well condition measurement unit 930 may measure the amount of liquid (amount of water) in the reinjection well 1200 for returning the gas 30 used for geothermal power generation back to liquid form and returning it to the underground geothermal reservoir. Alternatively or in addition to this, the well condition measurement unit 930 may measure the amount of steam 1110 and hot water 1120 pumped from the geothermal reservoir in the production well 1100.

[0114] The dilution amount control unit 924 adjusts the supply amount of the diluent 913 based on the measurement result of the well condition measurement unit 930. Specifically, the dilution amount control unit 924 may adjust the aperture of the adjustment valve 922. The adjustment valve 922 adjusts the supply amount of the diluent 913 according to the aperture. This allows the diluent supply unit 900 to adjust the supply amount of the diluent based on the amount of water in the reinjection well 1200. If the amount of water in the reinjection well 1200 is small, the diluent supply unit 900 may increase the supply amount of the diluent 913. This adjustment makes it possible to adjust the amount of liquid not to overflow from the reinjection well 1200.

[0115] FIG. 19 is a diagram showing another example of the wet cyclone scrubber section 100 in the geothermal power generation scrubber apparatus 1000. In FIG. 19, the diluent introduction pipe 910 is connected to the liquid discharge pipe 20 connected downstream from the liquid discharge port 19. This makes it possible to lower the concentration of silica and the like in the wastewater 46 downstream from the connection between the diluent introduction pipe 910 and the liquid discharge pipe 20. It is desirable that the diluent introduction pipe 910 is connected to the liquid discharge pipe 20 near the liquid discharge port 19. For example, it is desirable that the diluent introduction pipe 910 is connected to the liquid discharge pipe 20 in a region within 1 m from the liquid discharge port 19. This makes it possible to suppress the precipitation of silica, calcium, aluminum, magnesium, and the like to form "scale".

[0116] FIG. 20 is a diagram showing an example of a dry cyclone scrubber section 200. The dry cyclone scrubber section 200 has a tube body 201. The tube body 201 has a cylindrical section 202 and a conical section 204 that are connected to each other at their ends. The conical section 204 has a diameter that decreases in the Z-axis direction from one end to the other end. An inlet 206 is provided on the side of the cylindrical section 202. Gas 30 is introduced from the inlet 206. One end of the cylindrical section 202 is connected to one end of the conical section 204. The other end of the conical section 204 is a dust outlet 209. A partition plate 208 that separates the internal space of the dry cyclone scrubber section 200 from the outside world is provided on the other end of the cylindrical section 202. A gas outlet 207 that communicates between the internal space of the dry cyclone scrubber section 200 and the outside world is provided in the center of the partition plate 208. Gas 30 is introduced through a gas outlet 207 .

[0117] The outer cylindrical diameter of the cylindrical portion 202 is Di. The height H of the cylindrical portion 202 is Di, and the height Hl of the conical portion 204 is 2Di. The height of the inlet 206 in the Z-axis direction is Di / 2. The width b of the inlet 206 in the Y-direction is Di / 5. The diameter d' of the gas outlet 207 is 2Di / 5. The diameter d of the dust outlet 209 is 4Di / 5. In this case, the viscosity of the gas 30 is μ (kg / m s), the dust density is ρ (kg / m), the gas velocity at the inlet 206 is u (m / s), and the dust particle density ρ p (kg / m) In this case, the limit minimum radius D of the particles that can be separated in the dry cyclone scrubber section 200 is pmin is (μb / {πu(ρ p For example, if Di = 0.8 m, the critical minimum radius D pmin In other words, in one example, suspended solids (silica, etc.) of 7 μm or more can be removed by the dry cyclone scrubber unit 200. The smaller the outer cylinder diameter Di, the smaller the limit minimum radius D of the separable particles. pminAs a result, the dry cyclone scrubber section 200 can remove relatively large suspended solids from the fine dust particles in the gas 30. Since the amount of gas that can be treated decreases as the outer cylinder diameter Di becomes smaller, it is possible to reduce the outer cylinder diameter Di to remove fine suspended solids while ensuring the amount of gas that can be treated by installing multiple units in parallel.

[0118] Fig. 21 is a diagram showing another example of the geothermal power generation scrubber unit 1000. In the example shown in Fig. 21, the geothermal power generation scrubber unit 1000 includes a plurality of dry cyclone scrubber sections 200a, 200b having different tube diameters Di. Specifically, the diameter Di_a of the first dry cyclone scrubber section 200a is smaller than the diameter Di_b of the second dry cyclone scrubber section 200b. Therefore, the critical minimum radius D pmin is the critical minimum radius D of the second dry cyclone scrubber section 200a pmin The geothermal power generation scrubber apparatus 1000 of this embodiment includes a switching unit 210 that selects the dry cyclone scrubber unit 200 that supplies gas to the gas inlet 11 of the wet cyclone scrubber unit 100 from among the multiple dry cyclone scrubber units 200a, 200b. The switching unit 210 is a switching valve in one example. The switching unit 210 can select an appropriate dry cyclone scrubber unit 200 depending on the size of fine particles contained in the gas.

[0119] Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments. It is clear to those skilled in the art that various modifications and improvements can be made to the above embodiments. It is clear from the description of the claims that such modifications and improvements can also be included in the technical scope of the present invention.

[0120] It should be noted that the order of execution of each process, such as operations, procedures, steps, and stages, in the devices, systems, programs, and methods shown in the claims, specifications, and drawings is not specifically stated as "before" or "prior to," and that the processes may be performed in any order unless the output of a previous process is used in a subsequent process. Even if the operational flow in the claims, specifications, and drawings is described using "first," "next," etc. for convenience, it does not mean that it is essential to perform the processes in this order. [Explanation of symbols]

[0121] 10 reaction tower, 11 gas inlet, 12 main pipe, 13 branch pipe, 14 jet section, 15 side wall, 16 bottom surface, 17 gas outlet, 18 gas treatment section, 19 liquid outlet, 20 liquid outlet pipe, 30 gas, 32 gas inlet pipe, 40 liquid, 42 droplets, 44 liquid film, 46 drainage, 51 recovery section, 52 first opening, 53 drainage section, 54 first introduction section, 55 recovery chamber, 56 opening, 57 bottom surface, 69 side wall, 80 swirl section, 81 support, 82 Blade portion, 83... front surface, 84... back surface, 90... liquid spray portion, 100... wet cyclone scrubber portion, 102... inlet end, 104... outlet end, 106... central axis, 115... wall, 116... wall, 200... dry cyclone scrubber portion, 201... tube body, 202... cylindrical portion, 204... conical portion, 206... inlet, 207... gas outlet, 208... partition plate, 209... dust outlet, 210... switching portion, 300... gas outlet portion, 315... side wall, 400... power generation device, 410... turbine, 420... generator , 430... condensate, 500... gas recovery section, 510... recovery tank, 520... cooling tower, 530... pump, 540... liquid, 600... introduction section, 610... heating tank, 620... gas-liquid separation section, 630... liquid, 640... liquid, 700... heating section, 702... liquid discharge area, 710... heating pipe, 711... first heating pipe, 712... second heating pipe, 713... geothermal water, 720... pump, 722... geothermal water temperature adjustment section, 730... measurement section, 740... heater section, 741... first heater section, 742... second heater section data unit, 750...heater power supply, 752...heater control unit, 800...chemical introduction unit, 810...chemical introduction pipe, 813...chemical, 820...pump, 822...chemical container, 824...chemical amount adjustment unit, 830...measurement unit, 900...diluent supply unit, 910...diluent introduction pipe, 913...diluent, 920...pump, 922...regulation valve, 924...dilution amount control unit, 930...well condition measurement unit, 1000...geothermal power generation scrubber device, 1100...production well, 1110...steam, 1120...hot water, 1200...injection well,2000···Scrubber unit for geothermal power generation, 3000···Scrubber unit for geothermal power generation,

Claims

1. A geothermal power generation scrubber device that processes gas from a geothermal power generation facility and supplies it to a power generation device. A wet cyclone scrubber section having a reaction tower into which the gas is introduced and a liquid spray section that sprays a liquid into the reaction tower, and treats the gas with the liquid; A gas outlet section connected to the wet cyclone scrubber section and configured to output the gas to the power generation device; a swirling section that is disposed downstream of the liquid spray section in a gas flow path including the wet cyclone scrubber section and the gas outlet section and that swirls the gas in a predetermined swirling direction; Equipped Scrubber equipment for geothermal power generation.

2. Further comprising a dry cyclone scrubber section for treating the gas, The gas advances from the dry cyclone scrubber section to the wet cyclone scrubber section. The scrubber apparatus for geothermal power generation according to claim 1.

3. The swirling section is provided inside the reaction tower. The scrubber apparatus for geothermal power generation according to claim 1 or 2.

4. The swirling portion is provided in the gas outlet portion. The scrubber apparatus for geothermal power generation according to claim 1 or 2.

5. The power generating device includes a turbine. The axis of the swirl portion and the rotation axis of the turbine are provided coaxially. The scrubber apparatus for geothermal power generation according to claim 4.

6. The gas treating apparatus further includes a liquid recovery section that is provided downstream of the swirling section in the gas traveling direction and that recovers the liquid that has treated the gas. The scrubber apparatus for geothermal power generation according to any one of claims 1 to 5.

7. The liquid recovery section is formed of a protective material having a weaker hydrogen bonding force or a weaker electrical attraction force than the material forming the gas outlet section. The scrubber apparatus for geothermal power generation according to claim 6.

8. The inner wall of the liquid recovery section is coated with a protective material having a weaker hydrogen bonding force or a weaker electrical attraction force than the material forming the gas lead-out section. The scrubber apparatus for geothermal power generation according to claim 6.

9. The outer wall of the liquid recovery section is coated with a protective material having a weaker hydrogen bonding force or a weaker electrical attraction than the material forming the gas lead-out section. The scrubber apparatus for geothermal power generation according to claim 6 or 8.

10. an opening connecting the inside of the liquid recovery section to the reaction tower or the gas outlet section; The opening is coated with the protective material. The scrubber apparatus for geothermal power generation according to any one of claims 7 to 9.

11. The liquid spray portion is formed of the protective material. The scrubber apparatus for geothermal power generation according to any one of claims 7 to 10.

12. The inside of the ejection part of the liquid spray part is coated with the protective material. The scrubber apparatus for geothermal power generation according to any one of claims 7 to 10.

13. The swirl blades are coated with the protective material. The geothermal power generation scrubber apparatus according to any one of claims 7 to 12.

14. The blade portion of the swirl portion is coated with the protective material only on the upstream side in the gas flow direction. The geothermal power generation scrubber apparatus according to any one of claims 7 to 12.

15. The protective material is fluororesin, polyvinyl chloride, polyethylene, polypropylene, engineering plastic, or DLC (diamond-like carbon). The scrubber apparatus for geothermal power generation according to any one of claims 7 to 14.

16. a gas recovery unit that is provided downstream of the turbine in a traveling direction of the gas and recovers the gas. The scrubber apparatus for geothermal power generation according to claim 5.

17. The gas recovery unit cools the vapor of the gas and recovers the liquid. The geothermal power generation scrubber apparatus according to claim 16.

18. The gas recovery unit recovers condensed water from the vicinity of the turbine. The scrubber apparatus for geothermal power generation according to claim 16 or 17.

19. A plurality of dry cyclone scrubber units each having a different pipe diameter; a switching unit for selecting a dry cyclone scrubber unit that supplies the gas to a gas inlet of the wet cyclone scrubber unit from among the plurality of dry cyclone scrubber units; Further comprising A geothermal power generation scrubber apparatus according to any one of claims 1 to 18.

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