Renewable energy driven iron-based zero-carbon-emission energy storage power generation system based on iron-oxygen circulation

Abstract

The invention provides a renewable energy driven iron-based zero-carbon-emission energy storage power generation system based on iron-oxygen circulation, and belongs to the technical field of renewable energy utilization and power generation, and the renewable energy driven iron-based zero-carbon-emission energy storage power generation system comprises a renewable energy consumption module, an alkaline water electrolysis hydrogen production module, a hydrogen reduction reaction module, a combustion energy supply module and a steam Rankine cycle module; the renewable energy consumption module is used for acquiring and converting renewable energy into electric energy; the alkaline water electrolysis hydrogen production module is used for producing hydrogen by using electric energy; the hydrogen reduction reaction module utilizes hydrogen to carry out reduction reaction to store energy; and the steam Rankine cycle module is used for converting energy released by combustion into electric energy. Based on iron-oxygen circulation and through cooperative operation of the renewable energy consumption module, the alkaline water electrolysis hydrogen production module, the hydrogen reduction reaction module, the combustion energy supply module and the steam Rankine cycle module, efficient consumption of renewable energy, effective storage and conversion of energy and zero-carbon-emission green electricity production are achieved.

Description

Technical Field

[0001] The present invention relates to the field of renewable energy utilization and power generation technology, and in particular to a renewable energy-driven iron-based zero-carbon emission energy storage power generation system based on an iron-oxygen cycle. Background Art

[0002] In today's environment of strong demand for clean energy and increasing environmental awareness, technological innovation in the energy field has attracted much attention. In particular, the effective use of renewable energy and low-carbon electricity production have become key issues that need to be addressed urgently.

[0003] At present, traditional coal-fired power plants produce a large amount of carbon dioxide during the power generation process, which has a serious impact on the environment. Although some scholars have tried to use carbon capture and storage technology to reduce the carbon dioxide produced during the power generation process of conventional coal-fired power plants, or to use small-scale renewable energy devices to provide auxiliary power for coal-fired power plants, these methods can only alleviate the problem to a certain extent, and cannot fundamentally solve the carbon emission problem generated by the coal combustion process. It is also difficult to achieve large-scale energy transformation, and the role in addressing global climate change is limited.

[0004] In terms of the storage and transportation of renewable energy, existing technologies also face many challenges. Some scholars have proposed the use of batteries and chemical energy storage carriers such as hydrogen and ammonia, or the use of technologies such as methyl ether hydrogen storage and magnesium-based metal solid hydrogen storage to achieve the storage and transportation of hydrogen. However, these carriers have low energy density, making it difficult to achieve safe and high-density energy storage and transportation, which greatly limits their practical applications and cannot meet the needs of large-scale, long-distance energy transportation. At the same time, renewable energy itself is intermittent and unstable, and there are differences between it and the application scenarios in multiple dimensions such as distance and time, which makes the efficient use of renewable energy more difficult. Existing energy storage and transportation carriers are difficult to meet the requirements of both high energy density and convenient storage and transportation, which limits the application of renewable energy in a wider range of fields. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide a renewable energy-driven iron-based zero-carbon emission energy storage and power generation system based on the iron-oxygen cycle. Based on the iron-oxygen cycle and through the coordinated operation of the renewable energy consumption module, the alkaline water electrolysis hydrogen production module, the hydrogen reduction reaction module, the combustion energy supply module and the steam Rankine cycle module, the efficient consumption of renewable energy, the effective storage and conversion of energy, and the zero-carbon emission green electricity production are realized.

[0006] To achieve the above object, the present invention provides the following solutions: A renewable energy-driven iron-based zero-carbon emission energy storage and power generation system based on the ferrite cycle, comprising a renewable energy consumption module, an alkaline electrolytic water hydrogen production module, a hydrogen reduction reaction module, a combustion energy supply module, and a steam Rankine cycle module; the renewable energy consumption module is used to obtain and convert renewable energy into electric energy; the alkaline electrolytic water hydrogen production module uses electric energy to produce hydrogen; the hydrogen reduction reaction module uses the request to carry out a reduction reaction to store energy; the steam Rankine cycle module is used to convert the energy released by combustion into electric energy.

[0007] Preferably, the renewable energy consumption module includes a photovoltaic generator, and the photovoltaic generator is respectively connected to the alkaline electrolytic water hydrogen production module and the hydrogen reduction reaction module through a first power transmission line and a second power transmission line to provide electric energy for the electrical structures in the modules.

[0008] Preferably, the alkaline electrolytic water hydrogen production module includes an alkaline electrolytic cell, and the alkaline electrolytic cell is connected to the photovoltaic generator. A first mixer, a first water pump, and a first heat exchanger are provided at the input end of the alkaline electrolytic cell. One end of the first mixer is connected to a first water pipeline, and the other end is connected to one end of the first water pump through a second water pipeline. The other end of the first water pump is connected to one end of the first heat exchanger through a third water pipeline. The other end of the first heat exchanger is connected to the input end of the alkaline electrolytic cell through a fourth water pipeline; A first separator, a second separator, and a third separator are provided at the output end of the alkaline electrolytic cell. The input end of the first separator is connected to the output end of the alkaline electrolytic cell through a first water-hydrogen-oxygen mixed pipeline. The output end of the first separator is connected to the input end of the second separator through a first water-oxygen pipeline. A first oxygen pipeline and a fifth water pipeline are respectively provided at the output end of the second separator, and the fifth water pipeline is connected to the first mixer; the output end of the first separator is also connected to the input end of the third separator through a first water-hydrogen pipeline. A sixth water pipeline and a first hydrogen pipeline are respectively provided at the output end of the third separator, the sixth water pipeline is connected to the first mixer, and the first hydrogen pipeline is connected to the hydrogen reduction reaction module.

[0009] Preferably, the hydrogen reduction reaction module includes a reduction reactor, a second heat exchanger, and a first heat exchanger. The reduction reactor is connected to the photovoltaic generator. The input end of the second heat exchanger is connected to the first hydrogen pipeline. The output end of the second heat exchanger is connected to the input end of the reduction reactor through a second hydrogen pipeline. The output end of the reduction reactor is connected to one end of the second heat exchanger through a first iron pipeline. The other end of the second heat exchanger is connected to the input end of the first heat exchanger through a second iron pipeline. The output end of the first heat exchanger is connected to the combustion energy supply module.

[0010] Preferably, the combustion energy supply module includes a burner. The input end of the burner is connected to the input end of the first heat exchanger through a third iron conveying pipeline. The input end of the burner is also respectively connected to a fourth iron conveying pipeline and a second oxygen conveying pipeline. The output end of the burner is connected to the reduction reactor through an iron oxide conveying pipeline. The burner is used for burning the iron transported from the hydrogen reduction reaction module to release energy, and the heat generated by the burner is used to drive the steam Rankine cycle module.

[0011] Preferably, the steam Rankine cycle module is composed of several groups of heat exchange mechanisms, steam turbine mechanisms, mixing mechanisms and separation mechanisms. The heat exchange mechanisms include a fifth heat exchanger, a sixth heat exchanger, a seventh heat exchanger, an eighth heat exchanger, a ninth heat exchanger, a tenth heat exchanger and an eleventh heat exchanger; the steam turbine mechanisms include a first steam turbine, a second steam turbine, a third steam turbine, a fourth steam turbine, a fifth steam turbine, a sixth steam turbine, a seventh steam turbine, an eighth steam turbine and a ninth steam turbine; the mixing mechanisms include a second mixer, a third mixer, a fourth mixer, a fifth mixer, a sixth mixer, a seventh mixer and an eighth mixer; the separation mechanisms include a fourth separator, a fifth separator, a sixth separator, a seventh separator, an eighth separator, a ninth separator, a tenth separator and an eleventh separator; a third heat exchanger is installed between the fifth heat exchanger and the first steam turbine. The output end of the third heat exchanger is connected to the input end of the first steam turbine through a seventh water conveying pipeline. The output end of the first steam turbine is connected to the input end of the fourth separator through an eighth water conveying pipeline. The output end of the fourth separator is respectively connected to the input end of the corresponding second steam turbine and the input end of the fifth heat exchanger through a ninth water conveying pipeline and a tenth water conveying pipeline. The output end of the fifth heat exchanger is connected to the input end of the third heat exchanger through a fifty-ninth water conveying pipeline. The output end of the fifth heat exchanger is also connected to the input end of the second mixer through an eleventh water conveying pipeline; The output end of the second steam turbine is connected to the input end of the fifth separator through a twelfth water conveying pipeline. The output end of the fifth separator is connected to the input end of the fourth heat exchanger through a thirteenth water conveying pipeline. The output end of the fifth separator is also connected to the input end of the second mixer through a fourteenth water conveying pipeline. The output end of the second mixer is connected to the input end of the sixth heat exchanger through a fifteenth water conveying pipeline. The output end of the sixth heat exchanger is connected to the input end of the third mixer through a sixteenth water conveying pipeline.

[0012] Preferably, the output end of the fourth heat exchanger is connected to the input end of the third steam turbine through the seventeenth water conveyance pipeline. The output end of the third steam turbine is connected to the input end of the sixth separator through the eighteenth water conveyance pipeline. The output end of the sixth separator is respectively connected to the input ends of the corresponding fourth steam turbine and the third mixer through the nineteenth water conveyance pipeline and the twentieth water conveyance pipeline. The output end of the third mixer is connected to the input end of the seventh heat exchanger through the twenty-first water conveyance pipeline. The output end of the seventh heat exchanger is connected to the input end of the fourth mixer through the twenty-second water conveyance pipeline.

[0013] Preferably, the output end of the fourth steam turbine is connected to the input end of the seventh separator through the twenty-third water conveyance pipeline. The output end of the seventh separator is respectively connected to the input ends of the corresponding fifth steam turbine, the compressor, and the fourth mixer through the twenty-fourth water conveyance pipeline, the twenty-fifth water conveyance pipeline, and the twenty-sixth water conveyance pipeline. The output end of the compressor is connected to the eighth mixer through the forty-seventh water conveyance pipeline. The output end of the fifth steam turbine is connected to the input end of the eighth separator through the twenty-seventh water conveyance pipeline. The output end of the eighth separator is respectively connected to the input ends of the corresponding sixth steam turbine and the eighth heat exchanger through the twenty-eighth water conveyance pipeline and the twenty-ninth water conveyance pipeline. The output end of the eighth heat exchanger is connected to the input end of the fifth mixer through the thirtieth water conveyance pipeline. The output end of the sixth steam turbine is connected to the input end of the ninth separator through the thirty-first water conveyance pipeline. The output end of the ninth separator is respectively connected to the input ends of the corresponding seventh steam turbine and the fifth mixer through the thirty-second water conveyance pipeline and the thirty-third water conveyance pipeline. The output end of the fifth mixer is connected to the input end of the ninth heat exchanger through the thirty-fourth water conveyance pipeline. The output end of the ninth heat exchanger is connected to the input end of the sixth mixer through the thirty-fifth water conveyance pipeline.

[0014] Preferably, the output end of the seventh steam turbine is connected to the input end of the tenth separator through the thirty-sixth water conveyance pipeline. The output end of the tenth separator is respectively connected to the input end of the corresponding eighth steam turbine and the input end of the sixth mixer through the thirty-seventh water conveyance pipeline and the thirty-eighth water conveyance pipeline. The output end of the sixth mixer is connected to the input end of the tenth heat exchanger through the thirty-ninth water conveyance pipeline. The output end of the tenth heat exchanger is connected to the input end of the seventh mixer through the fortieth water conveyance pipeline. The output end of the eighth steam turbine is connected to the input end of the eleventh separator through the forty-first water conveyance pipeline. The output end of the eleventh separator is respectively connected to the input end of the corresponding ninth steam turbine and the input end of the seventh mixer through the forty-second water conveyance pipeline and the forty-third water conveyance pipeline. The output end of the seventh mixer is connected to the input end of the eleventh heat exchanger through the forty-fourth water conveyance pipeline. The output end of the eleventh heat exchanger is connected to the input end of the eighth mixer through the forty-fifth water conveyance pipeline.

[0015] Preferably, the output end of the ninth steam turbine is connected to the input end of the eighth mixer through the forty-sixth water conveyance pipeline. The output end of the eighth mixer is connected to the input end of the twelfth heat exchanger through the forty-eighth water conveyance pipeline. The output end of the twelfth heat exchanger is connected to the input end of the third water pump through the forty-ninth water conveyance pipeline. The output end of the third water pump is connected to the eleventh heat exchanger through the fiftieth water conveyance pipeline. The eleventh heat exchanger and the tenth heat exchanger are connected through the fifty-first water conveyance pipeline. The tenth heat exchanger and the ninth heat exchanger are connected through the fifty-second water conveyance pipeline. The ninth heat exchanger and the eighth heat exchanger are connected through the fifty-third water conveyance pipeline. The eighth heat exchanger is connected to the fourth mixer through the fifty-fourth water conveyance pipeline. The fourth mixer is connected to the second water pump through the fifty-fifth water conveyance pipeline. The second water pump and the seventh heat exchanger are connected through the fifty-sixth water conveyance pipeline. The seventh heat exchanger and the sixth heat exchanger are connected through the fifty-seventh water conveyance pipeline. The sixth heat exchanger and the fifth heat exchanger are connected through the fifty-eighth water conveyance pipeline.

[0016] According to the specific embodiments provided by the present invention, the following technical effects of the present invention are disclosed: (1) The present invention converts solar energy into electrical energy through a photovoltaic generator, drives alkaline electrolytic water to produce hydrogen, and then uses hydrogen to reduce iron oxide to achieve energy storage, effectively solving the problem of power consumption caused by the intermittency and instability of renewable energy, reducing the phenomenon of abandoned electricity, and improving the utilization rate of renewable energy.

[0017] (2) Based on the iron-oxygen cycle, the entire power generation process uses iron as an energy carrier. The iron oxide generated after burning iron for power generation can be recycled again, without generating additional carbon emissions, achieving zero carbonization of power production, meeting the environmental protection requirements, and contributing to coping with climate change.

[0018] (3) The present invention realizes energy storage with iron as the carrier. Compared with other energy storage carriers such as hydrogen, it is more convenient for long-distance transportation and has high safety. At the same time, each module in the system operates in coordination, forming an integrated process from renewable energy acquisition, energy storage to power generation, improving the comprehensive energy utilization efficiency and reducing energy transmission losses. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a structural diagram of a renewable energy-driven iron-based zero-carbon emission energy storage and power generation system based on the ferrite cycle of the present invention; Figure 2 It is a structural diagram of the comparative system provided in Embodiment 1 of the present invention.

[0021] Description of the Reference Numerals: 1. First water conveyance pipeline; 2. Second water conveyance pipeline; 3. Third water conveyance pipeline; 4. Fourth water conveyance pipeline; 5. First water-hydrogen-oxygen mixing pipeline; 6. First water-oxygen pipeline; 7. First water-hydrogen pipeline; 8. First oxygen conveyance pipeline; 9. Fifth water conveyance pipeline; 10. Sixth water conveyance pipeline; 11. First hydrogen conveyance pipeline; 12. Second hydrogen conveyance pipeline; 13. First iron conveyance pipeline; 14. Second iron conveyance pipeline; 15. Third iron conveyance pipeline; 16. Ferric oxide conveyance pipeline; 17. Second oxygen conveyance pipeline; 18. Fourth iron conveyance pipeline; 19. Seventh water conveyance pipeline; 20. Eighth water conveyance pipeline; 21. Ninth water conveyance pipeline; 22. Tenth water conveyance pipeline; 23. Eleventh water conveyance pipeline; 24. Twelfth water conveyance pipeline; 25. Thirteenth water conveyance pipeline; 26. Fourteenth water conveyance pipeline; 27. Fifteenth water conveyance pipeline; 28. Sixteenth water conveyance pipeline; 29. Seventeenth water conveyance pipeline; 30. Eighteenth water conveyance pipeline; 31. Nineteenth water conveyance pipeline; 32. Twentieth water conveyance pipeline; 33. Twenty-first water conveyance pipeline; 34. Twenty-second water conveyance pipeline; 35. Twenty-third water conveyance pipeline; 36. Twenty-fourth water conveyance pipeline; 37. Twenty-fifth water conveyance pipeline; 38. Twenty-sixth water conveyance pipeline; 39. Twenty-seventh water conveyance pipeline; 40. Twenty-eighth water conveyance pipeline; 41. Twenty-ninth water conveyance pipeline; 42. Thirtieth water conveyance pipeline; 43. Thirty-first water conveyance pipeline; 44. Thirty-second water conveyance pipeline; 45. Thirty-third water conveyance pipeline; 46. Thirty-fourth water conveyance pipeline; 47. Thirty-fifth water conveyance pipeline; 48. Thirty-sixth water conveyance pipeline; 49. Thirty-seventh water conveyance pipeline; 50. Thirty-eighth water conveyance pipeline; 51. Thirty-ninth water conveyance pipeline; 52. Fortieth water conveyance pipeline; 53. Forty-first water conveyance pipeline; 54. Forty-second water conveyance pipeline; 55. Forty-third water conveyance pipeline; 56. Forty-fourth water conveyance pipeline; 57. Forty-fifth water conveyance pipeline; 58. Forty-sixth water conveyance pipeline; 59. Forty-seventh water conveyance pipeline; 60. Forty-eighth water conveyance pipeline; 61. Forty-ninth water conveyance pipeline; 62. Fiftieth water conveyance pipeline; 63. Fifty-first water conveyance pipeline; 64. Fifty-second water conveyance pipeline; 65. Fifty-third water conveyance pipeline; 66. Fifty-fourth water conveyance pipeline; 67. Fifty-fifth water conveyance pipeline; 68. Fifty-sixth water conveyance pipeline; 69. Fifty-seventh water conveyance pipeline; 70. Fifty-eighth water conveyance pipeline; 71. Fifty-ninth water conveyance pipeline; 72. First power transmission line; 73. Second power transmission line; HX-01. First heat exchanger; HX-02. Second heat exchanger; HX-03. Third heat exchanger; HX-04. Fourth heat exchanger; HX-05. Fifth heat exchanger; HX-06. Sixth heat exchanger; HX-07. Seventh heat exchanger; HX-08. Eighth heat exchanger; HX-09. Ninth heat exchanger; HX-10. Tenth heat exchanger; HX-11. Eleventh heat exchanger; HX-12. Twelfth heat exchanger; TB-01. First steam turbine; TB-02. Second steam turbine;TB-03, the third steam turbine; TB-04, the fourth steam turbine; TB-05, the fifth steam turbine; TB-06, the sixth steam turbine; TB-07, the seventh steam turbine; TB-08, the eighth steam turbine; TB-09, the ninth steam turbine; Combustion chamber, burner; Alkaline electrolyzer, alkaline electrolytic cell; Reduction reactor, reduction reactor; Mix-01, the first mixer; Mix-02, the second mixer; Mix-03, the third mixer; Mix-04, the fourth mixer; Mix-05, the fifth mixer; Mix-06, the sixth mixer; Mix-07, the seventh mixer; Mix-08, the eighth mixer; Sep-01, the first separator; Sep-02, the second separator; Sep-03, the third separator; Sep-04, the fourth separator; Sep-05, the fifth separator; Sep-06, the sixth separator; Sep-07, the seventh separator; Sep-08, the eighth separator; Sep-09, the ninth separator; Sep-10, the tenth separator; Sep-11, the eleventh separator; Com-01, compressor; Pump-01, the first water pump; Pump-02, the second water pump; Pump-03, the third water pump; PV, photovoltaic generator.; Detailed implementation manners

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the drawings and specific implementation manners.

[0024] Embodiment 1 As Figure 1 shown, the present invention provides a renewable energy-driven iron-based zero-carbon emission energy storage power generation system based on the ferrite cycle, including a renewable energy consumption module, an alkaline electrolytic water hydrogen production module, a hydrogen reduction reaction module, a combustion energy supply module, and a steam Rankine cycle module. Through the coordinated operation of each module, the system realizes the efficient utilization of renewable energy and the production of green electricity with zero carbon emissions.

[0025] In this embodiment, the renewable energy consumption module is used to obtain and convert renewable energy into electric energy. This module includes a photovoltaic generator PV, which converts solar energy into electric energy and is connected to an alkaline electrolytic water hydrogen production module and a hydrogen reduction reaction module through a first power transmission line 72 and a second power transmission line 73 respectively, providing electric energy for the electrical structures in these two modules and serving as the energy source of the entire system.

[0026] The alkaline electrolytic water hydrogen production module uses the electric energy provided by the photovoltaic generator PV to produce hydrogen. This module includes an alkaline electrolyzer, and a first mixer Mix-01, a first water pump Pump-01, and a first heat exchanger HX-01 are provided at its input end. One end of the first mixer Mix-01 is connected to a first water supply pipeline 1 for inputting makeup water, and the other end is connected to one end of the first water pump Pump-01 through a second water supply pipeline 2. The first water pump Pump-01 transports water to the first heat exchanger HX-01 through a third water supply pipeline 3 for preheating, and the other end of the first heat exchanger HX-01 sends the preheated water into the alkaline electrolyzer through a fourth water supply pipeline 4. The alkaline electrolyzer electrolyzes water to produce hydrogen, oxygen, and unreacted water, and a first separator Sep-01, a second separator Sep-02, and a third separator Sep-03 are provided at its output end. The input end of the first separator Sep-01 is connected to the output end of the alkaline electrolyzer through a first water-hydrogen-oxygen mixed pipeline 5 to preliminarily separate the mixed products. The separated oxygen-rich fluid enters the second separator Sep-02 through a first water-oxygen pipeline 6. The second separator Sep-02 further separates oxygen and outputs it through a first oxygen pipeline 8, and at the same time sends the separated circulating water back to the first mixer Mix-01 through a fifth water supply pipeline 9 for recycling; the hydrogen-rich fluid separated by the first separator Sep-01 enters the third separator Sep-03 through a first water-hydrogen pipeline 7. The third separator Sep-03 separates hydrogen and transports it to the hydrogen reduction reaction module through a first hydrogen pipeline 11, and the separated circulating water is also sent back to the first mixer Mix-01 through a sixth water supply pipeline 10.

[0027] The hydrogen reduction reaction module stores energy through a reduction reaction using hydrogen. This module includes a Reduction Reactor, a second heat exchanger HX-02, and a first heat exchanger HX-01. Here, the first heat exchanger is the same device as the one that preheats the raw material water in the alkaline electrolytic water hydrogen production module, serving a multiple heat exchange function. The Reduction Reactor is connected to the photovoltaic generator PV and can be used for power consumption such as controlling the operation of the equipment. Hydrogen from the alkaline electrolytic water hydrogen production module enters the second heat exchanger HX-02 through the first hydrogen pipeline 11 for preheating. The preheated hydrogen enters the Reduction Reactor through the second hydrogen pipeline 12 and undergoes a reduction reaction with the input iron oxide to generate iron. The generated iron is transported to the second heat exchanger HX-02 through the first iron pipeline 13, where it is cooled while preheating the hydrogen. Then, it enters the first heat exchanger HX-01 through the second iron pipeline 14 for further heat exchange and is then transported to the combustion energy supply module.

[0028] The combustion energy supply module includes a Combustion Chamber. Its input end is connected to the output end of the first heat exchanger HX-01 through the third iron pipeline 15 to receive the iron that has undergone heat exchange. At the same time, the input end is also respectively connected to a fourth iron pipeline 18 and a second oxygen pipeline 17. The fourth iron pipeline 18 is used to supplement iron raw materials, etc., and the second oxygen pipeline 17 is used to input the oxygen required for combustion. The Combustion Chamber is used to burn the iron transported from the hydrogen reduction reaction module, releasing a large amount of energy. The generated iron oxide is sent back to the Reduction Reactor through the iron oxide pipeline 16 to form an iron-oxygen cycle, and the generated heat is used to drive the steam Rankine cycle module.

[0029] The steam Rankine cycle module is used to convert the energy released by combustion into electrical energy, and is composed of several groups of heat exchange mechanisms, steam turbine mechanisms, mixing mechanisms and separation mechanisms. The heat exchange mechanisms include the fifth heat exchanger HX-05, the sixth heat exchanger HX-06, the seventh heat exchanger HX-07, the eighth heat exchanger HX-08, the ninth heat exchanger HX-09, the tenth heat exchanger HX-10 and the eleventh heat exchanger HX-11; the steam turbine mechanisms include the first steam turbine TB-01, the second steam turbine TB-02, the third steam turbine TB-03, the fourth steam turbine TB-04, the fifth steam turbine TB-05, the sixth steam turbine TB-06, the seventh steam turbine TB-07, the eighth steam turbine TB-08 and the ninth steam turbine TB-09; the mixing mechanisms include the second mixer Mix-02, the third mixer Mix-03, the fourth mixer Mix-04, the fifth mixer Mix-05, the sixth mixer Mix-06, the seventh mixer Mix-07 and the eighth mixer Mix-08; the separation mechanisms include the fourth separator Sep-04, the fifth separator Sep-05, the sixth separator Sep-06, the seventh separator Sep-07, the eighth separator Sep-08, the ninth separator Sep-09, the tenth separator Sep-10 and the eleventh separator Sep-11.

[0030] Among them, the heat generated by the burner Combustionchamber is transferred to the working medium in the fifth heat exchanger HX-05. A third heat exchanger HX-03 is installed between the fifth heat exchanger HX-05 and the first steam turbine TB-01. The output end of the third heat exchanger HX-03 is connected to the input end of the first steam turbine TB-01 through the seventh water pipeline 19. The output end of the first steam turbine TB-01 is connected to the input end of the fourth separator Sep-04 through the eighth water pipeline 20. The output end of the fourth separator Sep-04 is respectively connected to the input end of the corresponding second steam turbine TB-02 and the input end of the fifth heat exchanger HX-05 through the ninth water pipeline 21 and the tenth water pipeline 22. The output end of the fifth heat exchanger HX-05 is connected to the input end of the third heat exchanger HX-03 through the fifty-ninth water pipeline 71. At the same time, the output end of the fifth heat exchanger HX-05 is also connected to the input end of the second mixer Mix-02 through the eleventh water pipeline 23.

[0031] The output end of the second steam turbine TB-02 is connected to the input end of the fifth separator Sep-05 through the twelfth water conveyance pipeline 24. The output end of the fifth separator Sep-05 is connected to the input end of the fourth heat exchanger HX-04 through the thirteenth water conveyance pipeline 25. The output end of the fifth separator Sep-05 is also connected to the input end of the second mixer Mix-02 through the fourteenth water conveyance pipeline 26. The output end of the second mixer Mix-02 is connected to the input end of the sixth heat exchanger HX-06 through the fifteenth water conveyance pipeline 27. The output end of the sixth heat exchanger HX-06 is connected to the input end of the third mixer Mix-03 through the sixteenth water conveyance pipeline 28.

[0032] The output end of the fourth heat exchanger HX-04 and the input end of the third steam turbine TB-03 are connected through the seventeenth water conveyance pipeline 29. The output end of the third steam turbine TB-03 is connected to the input end of the sixth separator Sep-06 through the eighteenth water conveyance pipeline 30. The output end of the sixth separator Sep-06 is respectively connected to the input end of the corresponding fourth steam turbine TB-04 and the input end of the third mixer Mix-03 through the nineteenth water conveyance pipeline 31 and the twentieth water conveyance pipeline 32. The output end of the third mixer Mix-03 is connected to the input end of the seventh heat exchanger HX-07 through the twenty-first water conveyance pipeline 33. The output end of the seventh heat exchanger HX-07 is connected to the input end of the fourth mixer Mix-04 through the twenty-second water conveyance pipeline 34.

[0033] The output end of the fourth steam turbine TB-04 is connected to the input end of the seventh separator Sep-07 through the twenty-third water conveyance pipeline 35. The output end of the seventh separator Sep-07 is respectively connected to the input ends of the corresponding fifth steam turbine TB-05, the compressor Com-01, and the fourth mixer Mix-04 through the twenty-fourth water conveyance pipeline 36, the twenty-fifth water conveyance pipeline 37, and the twenty-sixth water conveyance pipeline 38. The output end of the compressor Com-01 is connected to the eighth mixer Mix-08 through the forty-seventh water conveyance pipeline 59. The output end of the fifth steam turbine TB-05 is connected to the input end of the eighth separator Sep-08 through the twenty-seventh water conveyance pipeline 39. The output end of the eighth separator Sep-08 is respectively connected to the input ends of the corresponding sixth steam turbine TB-06 and the eighth heat exchanger HX-08 through the twenty-eighth water conveyance pipeline 40 and the twenty-ninth water conveyance pipeline 41. The output end of the eighth heat exchanger HX-08 is connected to the input end of the fifth mixer Mix-05 through the thirtieth water conveyance pipeline 42. The output end of the sixth steam turbine TB-06 is connected to the input end of the ninth separator Sep-09 through the thirty-first water conveyance pipeline 43. The output end of the ninth separator Sep-09 is respectively connected to the input ends of the corresponding seventh steam turbine TB-07 and the fifth mixer Mix-05 through the thirty-second water conveyance pipeline 44 and the thirty-third water conveyance pipeline 45. The output end of the fifth mixer Mix-05 and the input end of the ninth heat exchanger HX-09 are connected through the thirty-fourth water conveyance pipeline 46. The output end of the ninth heat exchanger HX-09 is connected to the input end of the sixth mixer Mix-06 through the thirty-fifth water conveyance pipeline 47.

[0034] The output end of the seventh steam turbine TB-07 is connected to the input end of the tenth separator Sep-10 through the thirty-sixth water conveyance pipeline 48. The output end of the tenth separator Sep-10 is respectively connected to the input end of the corresponding eighth steam turbine TB-08 and the input end of the sixth mixer Mix-06 through the thirty-seventh water conveyance pipeline 49 and the thirty-eighth water conveyance pipeline 50. The output end of the sixth mixer Mix-06 is connected to the input end of the tenth heat exchanger HX-10 through the thirty-ninth water conveyance pipeline 51. The output end of the tenth heat exchanger HX-10 is connected to the input end of the seventh mixer Mix-07 through the fortieth water conveyance pipeline 52. The output end of the eighth steam turbine TB-08 is connected to the input end of the eleventh separator Sep-11 through the forty-first water conveyance pipeline 53. The output end of the eleventh separator Sep-11 is respectively connected to the input end of the corresponding ninth steam turbine TB-09 and the input end of the seventh mixer Mix-07 through the forty-second water conveyance pipeline 54 and the forty-third water conveyance pipeline 55. The output end of the seventh mixer Mix-07 is connected to the input end of the eleventh heat exchanger HX-11 through the forty-fourth water conveyance pipeline 56. The output end of the eleventh heat exchanger HX-11 is connected to the input end of the eighth mixer Mix-08 through the forty-fifth water conveyance pipeline 57.

[0035] The output end of the ninth steam turbine TB-09 is connected to the input end of the eighth mixer Mix-08 through the forty-sixth water pipeline 58. The output end of the eighth mixer Mix-08 is connected to the input end of the twelfth heat exchanger HX-12 through the forty-eighth water pipeline 60. The output end of the twelfth heat exchanger HX-12 is connected to the input end of the third water pump Pump-03 through the forty-ninth water pipeline 61. The output end of the third water pump Pump-03 is connected to the eleventh heat exchanger HX-11 through the fiftieth water pipeline 62. The eleventh heat exchanger HX-11 is connected to the tenth heat exchanger HX-10 through the fifty-first water pipeline 63. The tenth heat exchanger HX-10 is connected to the ninth heat exchanger HX-09 through the fifty-second water pipeline 64. The ninth heat exchanger HX-09 is connected to the eighth heat exchanger HX-08 through the fifty-third water pipeline 65. The eighth heat exchanger HX-08 is connected to the fourth mixer Mix-04 through the fifty-fourth water pipeline 66. The fourth mixer Mix-04 is connected to the second water pump Pump-02 through the fifty-fifth water pipeline 67. The second water pump Pump-02 is connected to the seventh heat exchanger HX-07 through the fifty-sixth water pipeline 68. The seventh heat exchanger HX-07 is connected to the sixth heat exchanger HX-06 through the fifty-seventh water pipeline 69. The sixth heat exchanger HX-06 is connected to the fifth heat exchanger HX-05 through the fifty-eighth water pipeline 70. Finally, the thermal energy released by the burner is efficiently converted into electrical energy output. At the same time, a compressor Com-01, a second water pump Pump-02, and a third water pump Pump-03 are also provided in the system. The compressor Com-01 is used to increase the pressure of the working medium, and the second water pump Pump-02 and the third water pump Pump-03 are used to transport the working medium to ensure the stable operation of the system.

[0036] In this embodiment, the system is set to 300 MW. At the same time, the steam turbine mechanism of the system selects the PLPK series turbine, the compressor selects the INGERSOLL-RAND series compressor of England, and the heat exchanger mechanism all adopts countercurrent heat exchangers. At the same time, referring to Figure 2 , Figure 2 a traditional 300 MW coal-fired power plant system is provided as Comparative Example 1. By comparing the parameters of Example 1 and Comparative Example 1, the results are shown in Table 1, specifically: Table 1 Parameter Comparison Results

[0037] It can be seen from Table 1 that the system provided in Example 1 is based on the ferrite cycle and through the coordinated operation of the renewable energy consumption module, the alkaline electrolyzed water hydrogen production module, the hydrogen reduction reaction module, the combustion energy supply module, and the steam Rankine cycle module, realizing the efficient consumption of renewable energy, the effective storage and conversion of energy, and the production of green electricity with zero carbon emissions.

[0038] In this article, specific examples are used to elaborate on the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. At the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation on the present invention.

Claims

1. A renewable energy-driven iron-based zero-carbon emission energy storage and power generation system based on an iron-oxygen cycle, characterized in that: It includes a renewable energy consumption module, an alkaline water electrolysis hydrogen production module, a hydrogen reduction reaction module, a combustion energy supply module and a steam Rankine cycle module; the renewable energy consumption module is used to obtain and convert renewable energy into electrical energy; the alkaline water electrolysis hydrogen production module uses electrical energy to produce hydrogen; The hydrogen reduction reaction module utilizes hydrogen to perform a reduction reaction to store energy; the steam Rankine cycle module is used to convert the energy released by combustion into electrical energy.

2. According to claim 1, a renewable energy-driven iron-based zero-carbon emission energy storage power generation system based on an iron-oxygen cycle is characterized in that: The renewable energy consumption module includes a photovoltaic generator, which is connected to the alkaline water electrolysis hydrogen production module and the hydrogen reduction reaction module through a first power transmission line and a second power transmission line respectively to provide electrical energy for the power consumption structure in the module.

3. The renewable energy-driven iron-based zero-carbon emission energy storage power generation system based on iron-oxygen cycle according to claim 2 is characterized in that: The alkaline water electrolysis hydrogen production module comprises an alkaline electrolytic cell, which is connected to a photovoltaic generator. A first mixer, a first water pump and a first heat exchanger are provided at the input end of the alkaline electrolytic cell. One end of the first mixer is connected to a first water pipeline, and the other end is connected to one end of the first water pump through a second water pipeline. The other end of the first water pump is connected to one end of the first heat exchanger through a third water pipeline, and the other end of the first heat exchanger is connected to the input end of the alkaline electrolytic cell through a fourth water pipeline. A first separator, a second separator and a third separator are provided at the output end of the alkaline electrolytic cell. The input end of the first separator is connected to the output end of the alkaline electrolytic cell through a first water-hydrogen-oxygen mixing pipeline. The output end of the first separator is connected to the input end of the second separator through a first water-oxygen pipeline. The output end of the second separator is respectively provided with a first oxygen pipeline and a fifth water pipeline, and the fifth water pipeline is connected to the first mixer. The output end of the first separator is also connected to the input end of the third separator through a first water-hydrogen pipeline. The output end of the third separator is respectively provided with a sixth water pipeline and a first hydrogen pipeline, and the sixth water pipeline is connected to the first mixer. The first hydrogen pipeline is connected to the hydrogen reduction reaction module.

4. The renewable energy-driven iron-based zero-carbon emission energy storage power generation system based on iron-oxygen cycle according to claim 3 is characterized in that: The hydrogen reduction reaction module includes a reduction reactor, a second heat exchanger and a first heat exchanger, the reduction reactor is connected to the photovoltaic generator, the input end of the second heat exchanger is connected to the first hydrogen transmission pipeline, the output end of the second heat exchanger is connected to the input end of the reduction reactor through the second hydrogen transmission pipeline, the output end of the reduction reactor is connected to one end of the second heat exchanger through the first iron transmission pipeline, the other end of the second heat exchanger is connected to the input end of the first heat exchanger through the second iron transmission pipeline, and the output end of the first heat exchanger is connected to the combustion energy supply module.

5. The renewable energy-driven iron-based zero-carbon emission energy storage power generation system based on iron-oxygen cycle according to claim 4 is characterized in that: The combustion energy supply module includes a burner, the input end of the burner is connected to the input end of the first heat exchanger through a third iron delivery pipeline, the input end of the burner is also connected to a fourth iron delivery pipeline and a second oxygen delivery pipeline, respectively, the output end of the burner is connected to the reduction reactor through a ferric oxide delivery pipeline, the burner is used to burn the iron delivered from the hydrogen reduction reaction module to release energy, and the heat generated by the burner is used to drive the steam Rankine cycle module.

6. The renewable energy-driven iron-based zero-carbon emission energy storage power generation system based on iron-oxygen cycle according to claim 5 is characterized in that: The steam Rankine cycle module is composed of several groups of heat exchange mechanisms, steam turbine mechanisms, mixing mechanisms and separation mechanisms. The heat exchange mechanisms include a fifth heat exchanger, a sixth heat exchanger, a seventh heat exchanger, an eighth heat exchanger, a ninth heat exchanger, a tenth heat exchanger and an eleventh heat exchanger; the steam turbine mechanism includes a first steam turbine, a second steam turbine, a third steam turbine, a fourth steam turbine, a fifth steam turbine, a sixth steam turbine, a seventh steam turbine, an eighth steam turbine and a ninth steam turbine; the mixing mechanism includes a second mixer, a third mixer, a fourth mixer, a fifth mixer, a sixth mixer, a seventh mixer and an eighth mixer; the separation mechanism includes a fourth separator, a fifth separator, a sixth separator, a seventh separator , an eighth separator, a ninth separator, a tenth separator and an eleventh separator; a third heat exchanger is installed between the fifth heat exchanger and the first steam turbine, the output end of the third heat exchanger is connected to the input end of the first steam turbine through a seventh water pipeline, the output end of the first steam turbine is connected to the input end of the fourth separator through an eighth water pipeline, the output end of the fourth separator is connected to the corresponding input end of the second steam turbine and the input end of the fifth heat exchanger through a ninth water pipeline and a tenth water pipeline, the output end of the fifth heat exchanger is connected to the input end of the third heat exchanger through a fifty-ninth water pipeline, and the output end of the fifth heat exchanger is also connected to the input end of the second mixer through an eleventh water pipeline; The output end of the second steam turbine is connected to the input end of the fifth separator through a twelfth water pipeline, the output end of the fifth separator is connected to the input end of the fourth heat exchanger through a thirteenth water pipeline, the output end of the fifth separator is also connected to the input end of the second mixer through a fourteenth water pipeline, the output end of the second mixer is connected to the input end of the sixth heat exchanger through a fifteenth water pipeline, and the output end of the sixth heat exchanger is connected to the input end of the third mixer through a sixteenth water pipeline.

7. The renewable energy-driven iron-based zero-carbon emission energy storage power generation system based on iron-oxygen cycle according to claim 6 is characterized in that: The output end of the fourth heat exchanger is connected to the input end of the third steam turbine through the seventeenth water pipeline, the output end of the third steam turbine is connected to the input end of the sixth separator through the eighteenth water pipeline, the output end of the sixth separator is connected to the corresponding input end of the fourth steam turbine and the input end of the third mixer through the nineteenth water pipeline and the twentieth water pipeline respectively, the output end of the third mixer is connected to the input end of the seventh heat exchanger through the twenty-first water pipeline, and the output end of the seventh heat exchanger is connected to the input end of the fourth mixer through the twenty-second water pipeline.

8. The renewable energy driven iron-based zero carbon emission energy storage power generation system based on iron-oxygen cycle according to claim 7 is characterized in that: The output end of the fourth steam turbine is connected to the input end of the seventh separator through the twenty-third water pipeline, the output end of the seventh separator is connected to the input end of the corresponding fifth steam turbine, the input end of the compressor and the input end of the fourth mixer through the twenty-fourth water pipeline, the twenty-fifth water pipeline and the twenty-sixth water pipeline respectively, the output end of the compressor is connected to the eighth mixer through the forty-seventh water pipeline; the output end of the fifth steam turbine is connected to the input end of the eighth separator through the twenty-seventh water pipeline, the output end of the eighth separator is connected to the corresponding sixth steam turbine through the twenty-eighth water pipeline, the twenty-ninth water pipeline respectively. The input end of the steam turbine is connected to the input end of the ninth separator through a thirty-first water pipeline, and the output end of the ninth separator is connected to the corresponding input end of the seventh steam turbine and the input end of the fifth mixer through a thirty-second water pipeline and a thirty-third water pipeline respectively. The output end of the fifth mixer is connected to the input end of the ninth heat exchanger through a thirty-fourth water pipeline, and the output end of the ninth heat exchanger is connected to the input end of the sixth mixer through a thirty-fifth water pipeline.

9. The renewable energy-driven iron-based zero-carbon emission energy storage power generation system based on iron-oxygen cycle according to claim 8 is characterized in that: The output end of the seventh steam turbine is connected to the input end of the tenth separator through a thirty-sixth water pipeline, the output end of the tenth separator is connected to the corresponding input end of the eighth steam turbine and the input end of the sixth mixer through a thirty-seventh water pipeline and a thirty-eighth water pipeline respectively, the output end of the sixth mixer is connected to the input end of the tenth heat exchanger through a thirty-ninth water pipeline, and the output end of the tenth heat exchanger is connected to the input end of the seventh mixer through a forty-first water pipeline; the output end of the eighth steam turbine is connected to the input end of the eleventh separator through a forty-first water pipeline, the output end of the eleventh separator is connected to the corresponding input end of the ninth steam turbine and the input end of the seventh mixer through a forty-second water pipeline and a forty-third water pipeline respectively, the output end of the seventh mixer is connected to the input end of the eleventh heat exchanger through a forty-fourth water pipeline, and the output end of the eleventh heat exchanger is connected to the input end of the eighth mixer through a forty-fifth water pipeline.

10. The renewable energy driven iron-based zero carbon emission energy storage power generation system based on iron-oxygen cycle according to claim 9, characterized in that: The output end of the ninth steam turbine is connected to the input end of the eighth mixer through a forty-sixth water pipeline, the output end of the eighth mixer is connected to the input end of the twelfth heat exchanger through a forty-eighth water pipeline, the output end of the twelfth heat exchanger is connected to the input end of the third water pump through a forty-ninth water pipeline, the output end of the third water pump is connected to the eleventh heat exchanger through a fiftieth water pipeline, the eleventh heat exchanger is connected to the tenth heat exchanger through a fifty-first water pipeline, the tenth heat exchanger is connected to the ninth heat exchanger through a fifty-second water pipeline, the ninth heat exchanger is connected to the eighth heat exchanger through a fifty-third water pipeline, the eighth heat exchanger is connected to the fourth mixer through a fifty-fourth water pipeline, the fourth mixer is connected to the second water pump through a fifty-fifth water pipeline, the second water pump is connected to the seventh heat exchanger through a fifty-sixth water pipeline, the seventh heat exchanger is connected to the sixth heat exchanger through a fifty-seventh water pipeline, and the sixth heat exchanger is connected to the fifth heat exchanger through a fifty-eighth water pipeline.

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