Spray-type reheating steam reaction device and power generation equipment using the same

Abstract

The present invention discloses a spraying re-heating type steam reaction device and a power generation device using the same. The spraying re-heating type steam reaction device includes: a heat preservation furnace; a steam reaction furnace disposed in the heat preservation furnace; a re-heating pipeline connecting the steam reaction furnace to the outside of the heat preservation furnace, wherein a high heat capacity material is accommodated in the heat preservation furnace and surrounds the steam reaction furnace and the re-heating pipeline; a heater for heating the high heat capacity material; a sprayer disposed in the steam reaction furnace; and a liquid supply pipe connected to the sprayer through a heat preservation furnace structure wall of the heat preservation furnace and a reaction furnace structure wall of the steam reaction furnace, for supplying a liquid from the outside to the sprayer, so that the sprayer sprays the liquid into a mist and absorbs the heat energy of the high heat capacity material to generate low-temperature steam, and the low-temperature steam enters the re-heating pipeline and is heated into high-temperature steam for output.

Description

Technical Field

[0001] The present invention relates to a steam reaction device and a power generation device using the same, and particularly to a spraying reheat type steam reaction device and a power generation device using the same. Background Art

[0002] Solar power generation is an energy-saving and carbon-reducing technology. Light energy can be converted into electrical energy through solar cells, but solar power generation is limited by the sun's irradiation time. At night, solar power generation cannot play any role. Due to the booming development of solar cells, more and more solar power generation devices are installed in various regions, which can provide a considerable amount of electricity to the entire municipal power supply system during the day. Therefore, in the near future, the electricity generated by solar power generation devices during the day may be excessive. At this time, although batteries can be used to store electrical energy, these batteries are either expensive or have low efficiency, and will cause environmental pollution.

[0003] In addition, traditional boilers use fire to heat the water in the boilers to generate steam to drive steam generators for power generation. However, in the case of poor monitoring of the boilers, there is a risk of boiler explosion.

[0004] Therefore, how to provide a safe and stable energy storage method and energy conversion method is actually the problem to be solved in this case. The present invention further improves a spraying heat preservation type steam supply device and a power generation device using the same disclosed by the applicant of this case in US 10,256,636 B2 to further provide more stable high-temperature steam for power generation by a steam generator. Summary of the Invention

[0005] Therefore, an object of the present invention is to provide a spraying reheat type steam reaction device and a power generation device using the same, which generate high-temperature steam by spraying a mist-like liquid and heating the liquid in multiple stages to supply the high-temperature steam to a steam generator for power generation.

[0006] To achieve the above object, the present invention provides a spraying reheat type steam reaction device, comprising: a heat preservation furnace; a steam reaction furnace disposed in the heat preservation furnace; a reheating pipeline connecting the steam reaction furnace to the outside of the heat preservation furnace, wherein a high heat capacity material is accommodated in the heat preservation furnace and surrounds the steam reaction furnace and the reheating pipeline; a heater for heating the high heat capacity material; a sprayer disposed in the steam reaction furnace; and a liquid supply pipe communicating with the sprayer through a heat preservation furnace structure wall of the heat preservation furnace and a reaction furnace structure wall of the steam reaction furnace for supplying a liquid from the outside to the sprayer, so that the sprayer sprays the liquid into a mist and absorbs the heat energy of the high heat capacity material to generate low-temperature steam, and the low-temperature steam enters the reheating pipeline and is heated into high-temperature steam for output.

[0007] The steam reactor has a tapered channel that is biased to one side and is connected to a first end of the reheating pipeline for guiding the low-temperature steam to the reheating pipeline.

[0008] The reheating pipeline is a spiral pipeline with a plurality of spiral bends, and all of the plurality of spiral bends are immersed in the high heat capacity material, so that the low-temperature steam continues to absorb the heat energy of the high heat capacity material in the reheating pipeline and becomes the high-temperature steam.

[0009] The reheating pipeline is partially disposed in the insulation furnace and has a first end and a second end, wherein the first end is connected to the steam reactor, and the second end passes through the structural wall of the insulation furnace and reaches the outside of the insulation furnace.

[0010] The high heat capacity material is heated to a liquid state, and the temperature is between 450 and 580 °C, and there is an expansion space remaining above the high heat capacity material. The second end of the reheating pipeline passes through the structural wall of the insulation furnace from the expansion space and reaches the outside of the insulation furnace.

[0011] The spray-type reheating steam reaction device further includes a steam recovery pipeline that is selectively connected to the inside of the insulation furnace for recovering a recovered steam to the insulation furnace for reheating.

[0012] The present invention also provides a power generation device, characterized in that it includes:

[0013] A solar power generation device that converts solar energy into electrical energy;

[0014] The spray-type reheating steam reaction device of any of the above technical solutions, wherein the heater converts the electrical energy into heat energy to heat the high heat capacity material; and

[0015] A steam generator that is connected to the reheating pipeline and receives the high-temperature steam to generate electricity and generates a recovered steam.

[0016] The recovered steam is recovered to the insulation furnace for reheating through a steam recovery pipeline of the spray-type reheating steam reaction device.

[0017] The steam generator is connected to the reheating pipeline through the steam storage device.

[0018] The power generation device further includes:

[0019] A power management device that is electrically connected to the solar power generation device, the spray-type reheating steam reaction device and a power grid for providing power management, wherein the solar power generation device is disposed above a production device;

[0020] A steam condensation device is connected to the steam generator and is used to condense the recovered steam to generate condensed liquid;

[0021] A liquid supply source is used to provide the liquid; and

[0022] A hydraulic management device is connected to the steam condensation device and the production device and is used to provide hydraulic management.

[0023] The production device is a crop production device, and the hydraulic management device selectively supplies the condensed liquid to the production device to improve the environmental heating effect of the production device.

[0024] By means of the above embodiments, through the vaporization of the heat preservation furnace and the reheating of the reheating pipeline, high-temperature steam close to the temperature of the high heat capacity material can be effectively and stably provided for the steam generator to use, improving the power generation efficiency and the thermal efficiency of the high heat capacity material.

[0025] The beneficial effects of the present invention: The present invention generates high-temperature steam by spraying a misty liquid and heating the liquid in multiple stages to provide it to the steam generator for power generation. Description of the Drawings

[0026] Figure 1 Schematic diagram showing a power generation device according to a preferred embodiment of the present invention.

[0027] Figure 2 Showing Figure 1 Schematic diagram of the spray-type reheating steam reaction device.

[0028] CL: Condensed liquid

[0029] HV: High-temperature steam

[0030] LQ: Liquid

[0031] LV: Low-temperature steam

[0032] RV: Recovered steam

[0033] 10: Spray-type reheating steam reaction device

[0034] 11: Heat preservation furnace

[0035] 11A: Heat preservation furnace structure wall

[0036] 11B: Expansion space

[0037] 12: Steam reaction furnace

[0038] 12A: Diminishing-diameter channel

[0039] 12B: Reaction furnace structure wall

[0040] 12C: Middle cavity

[0041] 12D: Lower cavity

[0042] 12E: Conical surface

[0043] 13: Reheating pipeline

[0044] 13A: First end

[0045] 13B: Second end

[0046] 13C: Spiral bend

[0047] 14: Sprayer

[0048] 15: Liquid supply pipe

[0049] 16: Heater

[0050] 16A: Range

[0051] 17: High heat capacity material

[0052] 18: Safety valve

[0053] 19: Steam recovery pipeline

[0054] 20: Steam storage device

[0055] 30: Steam generator

[0056] 40: Steam condensation device

[0057] 50: Production device

[0058] 60: Solar power generation device

[0059] 70: Power management device

[0060] 80: Liquid supply source

[0061] 90: Hydraulic management device

[0062] 100: Power generation equipment

[0063] 200: Power grid Detailed implementation manners

[0064] As Figure 1 Shows a schematic diagram of the power generation equipment according to a preferred embodiment of the present invention. As Figure 1 Shown, this embodiment provides a power generation equipment 100, which includes a solar power generation device 60, a spray-type reheating steam reaction device 10, and a steam generator 30.

[0065] Figure 2 Shown Figure 1Schematic diagram of the spray reheating type steam reaction device 10. As Figure 2 and Figure 1 shown, the spray reheating type steam reaction device 10 includes a heat preservation furnace 11, a steam reaction furnace 12, a reheating pipeline 13, a sprayer 14, a liquid supply pipe 15 and a heater 16.

[0066] The heat preservation furnace 11 preferably includes heat insulation or heat insulating materials, which can be arranged in a heat preservation furnace structure wall 11A of the heat preservation furnace 11 to reduce the heat energy dissipation in the heat preservation furnace 11 to the external environment. The heat insulating materials can block the heat flow transmission, such as fiberglass, asbestos, rock wool, silicate, aerogel felt, vacuum panel, etc.

[0067] The steam reaction furnace 12 is arranged in the heat preservation furnace 11. The reheating pipeline 13 is a heat exchange pipe, which connects the steam reaction furnace 12 to the outside of the heat preservation furnace 11, such as an external steam storage device 20 or a steam generator 30. The high heat capacity material 17 is accommodated in the heat preservation furnace 11 and surrounds the steam reaction furnace 12 and the reheating pipeline 13. In one example, the steam reaction furnace 12 includes a tank made of stainless steel.

[0068] The heater 16 is used to heat the high heat capacity material 17, and can be arranged inside or outside the heat preservation furnace 11. The sprayer 14 is arranged in the steam reaction furnace 12. The liquid supply pipe 15 is connected to the sprayer 14 through the heat preservation furnace structure wall 11A of the heat preservation furnace 11 and a reaction furnace structure wall 12B of the steam reaction furnace 12, and is used to supply a liquid LQ from the outside to the sprayer 14. The sprayer 14 sprays the liquid LQ into a mist and absorbs the heat energy of the high heat capacity material 17 to generate low temperature steam LV. The low temperature steam LV enters the reheating pipeline 13 and is heated into high temperature steam HV and then output.

[0069] In one example, the high heat capacity material 17 includes nitrates, such as sodium nitrate, potassium nitrate, lithium nitrate or sodium nitrite. In another example, the high heat capacity material 17 is a multi-component mixed nitrate, such as a quaternary mixed nitrate of sodium nitrate, potassium nitrate, lithium nitrate and sodium nitrite. When the sample mass ratio is NaNO3:KNO3:LiNO3:NaNO2 = 0.23:0.407:0.106:0.257, the melting point of the quaternary mixed salt is as low as 92 °C and the boiling point reaches 559.3 °C. By adjusting the mass ratio and type (binary or ternary), multi-component mixed nitrates with different melting points and boiling points can be prepared, with the melting point range between 87 and 97 °C and the boiling point range between 540 and 580 °C.

[0070] In this example, the high heat capacity material 17 is heated by electromagnetic heating. Therefore, all or part of the heat insulation furnace structure wall 11A of the heat insulation furnace 11 can be made of a ferromagnetic material (such as iron), or part of the heat insulation furnace structure wall 11A within the electromagnetic heating range 16A can not use heat insulation material to improve the heating efficiency. Therefore, the heat insulation furnace structure wall 11A in this case has multiple parts made of different materials. The electromagnetic heating method can provide non-contact heating to the high heat capacity material 17 without penetrating the heat insulation furnace structure wall 11A, and the heating temperature is not limited by the operating temperature of the solid heating tube. For example, the heating power of the heater 16 can be controlled to heat the high heat capacity material 17 into a liquid state, and the temperature is between 450 and 580 °C, especially between 500 and 600 °C. In another example, the heater 16 is connected to the heat insulation furnace 11 to heat the high heat capacity material 17. The thermal energy of the high heat capacity material 17 is transmitted into the steam reactor 12 through the reactor structure wall 12B of the steam reactor 12. The heater 16 uses a stainless steel electric heating tube, which has a metal tube as the outer shell, and spiral electric heating alloy wires (nickel-chromium, iron-chromium alloy) are evenly distributed along the central axis inside the tube. Its gap is filled and compacted with magnesia sand with good insulation and heat conduction performance, and the two ends of the tube mouth are sealed with silica gel or ceramics. The stainless steel electric heating tube has high thermal efficiency, is easy to use, simple to install, and pollution-free, and is widely used in various heating occasions.

[0071] In one example, a standard container can be used as the main part of the heat insulation furnace 11, and heat insulation material is attached to the inner shell and the outer shell of the standard container, or filled in the shell of the standard container to provide heat insulation effect. The steam reactor 12 is close to the right side inside the heat insulation furnace 11, and the reheating pipeline 13 is close to the left side inside the heat insulation furnace 11. Therefore, the steam reactor 12 can be designed to have a diameter-reducing channel 12A that is inclined to one side (in this example, from the lower right side to the upper left side), providing a nozzle channel for the steam to travel upward to the left, and connecting to a first end 13A of the reheating pipeline 13 for guiding the low-temperature steam LV into the reheating pipeline 13.

[0072] The reheating pipeline 13 can be designed as a spiral pipeline with a plurality of spiral bends 13C, and all of these spiral bends 13C are immersed in the high heat capacity material 17, so that the low-temperature steam LV continues to absorb the thermal energy of the high heat capacity material 17 in the reheating pipeline 13 and becomes high-temperature steam HV. In this example, the thermal energy of the high heat capacity material 17 can be provided to the pipeline for steam heating and acceleration through the spiral pipeline that surrounds up and down and extends to the left. In addition, the reheating pipeline 13 is partially arranged in the insulation furnace 11 and has a first end 13A and a second end 13B, wherein the first end 13A is communicated with the steam reactor 12, and the second end 13B passes through the insulation furnace structure wall 11A of the insulation furnace 11 and reaches the outside of the insulation furnace 11. In addition, an expansion space 11B is reserved above the high heat capacity material 17. The expansion space 11B can be provided for the expansion of the high heat capacity material 17, and the second end 13B of the reheating pipeline 13 can also pass through the insulation furnace structure wall 11A of the insulation furnace 11 from the expansion space 11B and reach the outside of the insulation furnace 11, so that the high heat capacity material 17 will not provide pressure to the second end 13B or the risk that the high heat capacity material 17 leaks from the connection between the second end 13B and the insulation furnace 11.

[0073] In a non-limiting example, the molten salt (high heat capacity material) is heated to about 560 °C, and water (liquid LQ) is sprayed into the steam reactor 12 in a mist form to generate low-temperature steam LV at 100 °C to 120 °C. After passing through the multiple spiral bends 13C of the reheating pipeline 13, the low-temperature steam LV gradually rises, for example, rises to 150 °C, 250 °C, 350 °C, 450 °C, and finally the temperature of the high-temperature steam HV near the second end 13B at the outlet approaches the temperature of the molten salt, which is 560 °C. It is preferred that the water is pure water or water close to pure water. In other examples, other liquids can also be used for heating.

[0074] Optionally, the spray reheating type steam reaction device 10 further includes a safety valve 18, which is arranged on the insulation furnace 11 and is used to selectively communicate the inside and outside of the insulation furnace 11 to avoid excessive pressure in the insulation furnace 11. The steam reactor 12 has a lower cavity 12D, a middle cavity 12C and an upper cavity (a diameter-reducing channel 12A). The lower cavity 12D is a conical cavity with a conical surface 12E. The liquid supply pipe 15 enters the middle cavity 12C through the lower cavity 12D. The sprayer 14 is located in the middle cavity 12C, and the sprayed water mist can be vaporized in the lower cavity 12D, the middle cavity 12C and / or the upper cavity. If there is any water mist that has not been vaporized and falls on the high-temperature conical surface 12E, it will also be quickly vaporized. Finally, the water vapor will enter the reheating pipeline 13 through the upper cavity.

[0075] Optionally, the spray reheat type steam reaction device 10 may further include a steam recovery pipeline 19, selectively connected to the inside of the heat preservation furnace 11, for recovering a recovered steam RV to the heat preservation furnace 11 for reheating. The steam recovery pipeline 19 may be located in the middle cavity 12C, may also be located in the tapered channel 12A or the lower cavity 12D, and may include a check valve to prevent the reverse flow of steam. Furthermore, by using the reheating efficiency of the reheating pipeline, the design of the steam reaction furnace can be simplified. For example, there is no need for the corrugated separation layer provided in US 10,256,636 B2, and the reaction furnace structure wall of the steam reaction furnace is a quite simple structure.

[0076] In a non-limiting example, the steam reaction furnace 12 does not need to be provided with a pressure safety valve because when the pressure in the heat preservation furnace is too high, the liquid in the liquid supply pipe cannot be sprayed into the heat preservation furnace, thus having the effect of automatically cutting off the liquid source. As long as the liquid no longer enters the inner cavity of the steam reaction furnace and expands, there will be no danger of explosion. Therefore, the above heat preservation furnace and steam reaction furnace are quite safe.

[0077] The material of the liquid supply pipe 15 may be made of metal or heat-insulating material, and preferably the liquid supply pipe 15 is not in direct contact with the high heat capacity material 17 to prevent the water in the liquid supply pipe 15 from vaporizing inside the liquid supply pipe 15 and causing danger.

[0078] In the power generation device 100, the solar power generation device 60 converts solar energy into electric energy, such as a fixed solar cell module or a sun-tracking solar cell module. The heater 16 converts electric energy into heat energy to heat the high heat capacity material 17. The steam generator 30 is, for example, a steam turbine generator, connected to the reheating pipeline 13, and receives the high-temperature steam HV to generate electricity and then generates the recovered steam RV. The recovered steam RV is recovered to the heat preservation furnace 11 for reheating through the steam recovery pipeline 19 of the spray reheat type steam reaction device 10, and the cycle is repeated.

[0079] Optionally, the power generation device 100 further includes a steam storage device 20, such as a steam storage tank, wherein the steam generator 30 is connected to the reheating pipeline 13 through the steam storage device 20.

[0080] Optionally, the power generation device 100 further includes a power management device 70, a steam condensation device 40, a liquid supply source 80, and a hydraulic management device 90.

[0081] The power management device 70 is electrically connected to the solar power generation device 60, the spray reheating type steam reaction device 10, and a power grid 200 for providing power management. For example, the power management device 70 includes a controller, an inverter, etc. When the solar power generation device 60 stops generating electrical energy, it can control the spray reheating type steam reaction device 10 to provide high-temperature steam to the steam storage device 20 for power generation, or it can also control the solar power generation device 60 to supply power to the power grid 200 or the spray reheating type steam reaction device 10 for heating. It can be understood that the steam generator 30 can be electrically connected to the power grid 200, or can be electrically connected to the power grid 200 through the power management device 70. The steam condensation device 40 is connected to the steam generator 30 for condensing the recovered steam RV to generate a condensed liquid CL. The liquid supply source 80 is used to provide a liquid LQ. The hydraulic management device 90 includes a controller, a control valve, etc., and is connected to the steam condensation device 40 and a production device 50 for providing hydraulic management.

[0082] In this example, the solar power generation device 60 is arranged above the production device 50. The production device 50 is, for example, a crop production device. The hydraulic management device 90 selectively supplies the condensed liquid CL into the production device 50 to improve the environmental warming effect of the production device 50 and avoid the damage to the crops caused by cold snaps. In addition, the hydraulic management device 90 can include a reverse osmosis water softener to soften the condensed liquid CL to obtain soft water for reuse by the spray reheating type steam reaction device 10. The hydraulic management device 90 can also include fluid control devices such as a check valve and a three-way valve to provide selective hydraulic flow management.

[0083] With the spray reheating type steam reaction device and the power generation equipment using the same in the above embodiments, when there is an excess of electricity generated by the solar power generation device during sunlight, the power management device controls to supply the electricity of the solar power generation device to the heater to heat the high heat capacity material. When there is no sunlight, the power management device controls the liquid supply source to supply the liquid into the inner cavity of the steam reaction furnace to generate steam, so that the steam generator can use the steam to generate electricity, thereby enabling the optimal distribution of power. In addition, through the vaporization of the heat preservation furnace and the reheating of the reheating pipeline, high-temperature steam close to the temperature of the high heat capacity material can be effectively and stably provided for the steam generator to use, improving the power generation efficiency and the thermal efficiency of the high heat capacity material.

[0084] The specific embodiments proposed in the detailed description of the preferred embodiments are only used to conveniently illustrate the technical content of the present invention, rather than narrowly limiting the present invention to the above embodiments. Without exceeding the spirit and the scope of the patent application of the present invention, various changes and implementations belong to the scope of the present invention.

Claims

1. A spraying reheating type steam reaction device, characterized in that: Comprising: A holding furnace; A steam reaction furnace, disposed within the holding furnace; A reheating pipeline, connecting the steam reaction furnace to the outside of the holding furnace, wherein a high heat capacity material is accommodated within the holding furnace and surrounds the steam reaction furnace and the reheating pipeline; A heater, for heating the high heat capacity material; A sprayer, disposed within the steam reaction furnace; and A liquid supply pipe, connected to the sprayer through a structure wall of the holding furnace and a structure wall of the steam reaction furnace, for supplying a liquid from the outside to the sprayer, such that the sprayer sprays the liquid into a mist and absorbs the thermal energy of the high heat capacity material to generate low-temperature steam, and the low-temperature steam enters the reheating pipeline and is heated into high-temperature steam for output.

2. The spraying type reheating steam reaction device according to claim 1, wherein: The steam reaction furnace has a tapered channel that is offset to one side, connecting to a first end of the reheating pipeline, for guiding the low-temperature steam to the reheating pipeline.

3. The spraying type reheating steam reaction device according to claim 2, wherein: The reheating pipeline is a spiral pipeline, having a plurality of spiral bends, and all of the plurality of spiral bends are immersed in the high heat capacity material, such that the low-temperature steam continues to absorb the thermal energy of the high heat capacity material in the reheating pipeline and becomes the high-temperature steam.

4. The spraying type reheating steam reaction device according to claim 1, wherein: A part of the reheating pipeline is disposed within the holding furnace, and has a first end and a second end, wherein the first end is connected to the steam reaction furnace, and the second end passes through the structure wall of the holding furnace and reaches the outside of the holding furnace.

5. The spraying reheat type steam reaction device according to claim 4, wherein: The high heat capacity material is heated into a liquid state, and the temperature is between 450 and 580 °C, and an expansion space remains above the high heat capacity material, and the second end of the reheating pipeline passes through the structure wall of the holding furnace from the expansion space and reaches the outside of the holding furnace.

6. The spraying reheating type steam reaction device according to claim 1, characterized in that: Further comprising a steam recovery pipeline, selectively connected to the inside of the holding furnace, for recovering a recovered steam to the holding furnace for reheating.

7. A power generation device, characterized in that: Comprising: A solar power generation device, converting solar energy into electrical energy; The spray-type reheating steam reaction device as claimed in claim 1, wherein the heater converts the electrical energy into thermal energy to heat the high heat capacity material; and A steam generator, connected to the reheating pipeline, and receiving the high-temperature steam for power generation to generate a recovered steam.

8. The power generation device according to claim 7, wherein: The recovered steam is recovered to the holding furnace for reheating through a steam recovery pipeline of the spray-type reheating steam reaction device.

9. The power generation device according to claim 7, further comprising a steam storage device, wherein: The steam generator is connected to the reheating pipeline through the steam storage device.

10. The power generation device according to claim 7, wherein: Further comprising: A power management device, electrically connected to the solar power generation device, the spray-type reheating steam reaction device and a power grid, for providing power management, wherein the solar power generation device is disposed above a production device; A steam condensation device, connected to the steam generator, for condensing the recovered steam to generate a condensed liquid; A liquid supply source, for providing the liquid; and A hydraulic management device, connected to the steam condensation device and the production device, for providing hydraulic management.

11. The power generation device according to claim 10, characterized in that: The production device is a crop production device, and the hydraulic management device selectively supplies the condensed liquid to the production device to improve the environmental warming effect of the production device.

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