A nuclear power multi-element consumption system device

Abstract

This disclosure relates to the field of nuclear energy technology, and in particular to a nuclear power multi-element power consumption system device. Addressing the challenges and pain points of existing nuclear power consumption technologies, such as their monotonous nature and severely insufficient consumption capacity, this disclosure overcomes the limitations of existing technologies and provides a nuclear power multi-element power consumption system device. The involved processes are characterized by high energy consumption, high coupling, and high added value. It not only enables large-scale consumption of nuclear power and possesses high technical and economic efficiency, but also solves the problem that the severe insufficiency of nuclear power consumption in existing technologies may negatively impact the safe operation of nuclear power units.

Description

Technical Field

[0001] This disclosure relates to the field of nuclear energy technology, and in particular to a nuclear power multi-electrode consumption system device. Background Technology

[0002] With the rapid development of new energy installed capacity and the continuous expansion of the peak-valley difference of grid load, the structural contradiction between the base load operation of nuclear power plants and the insufficient grid absorption capacity has become increasingly prominent. Nuclear power absorption technology has become a common challenge and research hotspot in the nuclear power industry worldwide.

[0003] Current research on nuclear power consumption technologies and systems mostly focuses on specific local issues, lacking a holistic and systematic approach. Existing nuclear power consumption technologies also suffer from limitations in their capacity to meet the demands of nuclear power consumption, such as pumped hydro storage, molten salt thermal storage, batteries, and supercapacitors. Traditional seawater integrated utilization projects (such as desalination plants in the Middle East) typically employ monotonous models like "nuclear energy → freshwater" or "nuclear energy to hydrogen," resulting in resource utilization rates of less than 40%.

[0004] Therefore, it is necessary to provide a holistic and systematic multi-element nuclear power consumption system to effectively solve the problems of monotonous existing nuclear power consumption technology and serious inadequacy of consumption capacity. This is of strategic significance for the safe and economical operation of coastal nuclear power plants. Summary of the Invention

[0005] To address the aforementioned technical problems, this disclosure provides a nuclear power multi-electrode consumption system device.

[0006] This disclosure provides a nuclear power multi-electrode consumption system device, including: Nuclear power generation unit, used to provide nuclear power, secondary loop steam and waste heat steam; The seawater desalination unit includes an electrodialysis seawater desalination module for using nuclear power from the nuclear power generation unit to desalinate seawater to obtain fresh water and concentrated brine; and / or a steam seawater desalination module for using nuclear power from the nuclear power generation unit, secondary loop steam, and waste heat steam to desalinate seawater to obtain fresh water and concentrated brine. An electrolysis hydrogen production unit is used to electrolyze fresh water from the seawater desalination unit to produce hydrogen using nuclear power from the nuclear power generation unit. A metal salt separation unit is used to separate metal salts from the concentrated brine from the seawater desalination unit, yielding magnesium chloride, potassium salt, and sodium chloride, respectively. A CO2 capture unit is used to capture CO2 using nuclear power generated by the nuclear power generation unit. The chlor-alkali electrolysis unit is used to electrolyze sodium chloride from the metal salt separation unit using nuclear power from the nuclear power generation unit to produce sodium hydroxide, chlorine and hydrogen. A methane synthesis unit is used to synthesize methane from hydrogen from the electrolysis hydrogen production unit and / or from the chlor-alkali electrolysis unit with CO2 from the CO2 capture unit using nuclear power from the nuclear power generation unit. And a seawater bromine extraction unit, used to extract bromine from seawater using nuclear power from the nuclear power generation unit, chlorine from the chlor-alkali electrolysis unit, and sodium hydroxide.

[0007] Nuclear power is characterized by high power output (megawatts and above), low carbon emissions and near-zero emissions, and large baseload capacity. Nuclear power units exhibit stable or slowly varying load characteristics. Based on these characteristics, this disclosure provides a multi-system device capable of significantly absorbing nuclear power under nuclear safety constraints. This multi-system device does not exceed the design regulation capacity of the nuclear power unit, ensures the safe operation of both the nuclear power unit and the power grid, and achieves comprehensive utilization of nuclear energy through "nuclear energy drive - marine development - energy conversion - green cycle". Specifically: First, this disclosure utilizes the electricity and secondary loop steam (i.e., secondary loop steam) and waste heat from nuclear power plants for energy-intensive seawater desalination. On the one hand, this enables large-scale consumption of nuclear power, and on the other hand, it creates conditions for subsequent green nuclear hydrogen production and the extraction of marine chemicals from concentrated brine.

[0008] Second, this disclosure adopts a combined seawater desalination and salt production process to further integrate nuclear power and achieve zero discharge of high-salinity wastewater.

[0009] Third, this disclosure also utilizes nuclear power to produce green hydrogen from the freshwater produced by seawater desalination, further consumes CO2 captured by nuclear power, and then uses the produced green hydrogen and CO2 to produce methane using renewable energy power generation technology (Power to Gas, abbreviated as P2G).

[0010] Fourth, this disclosure also utilizes nuclear power to extract high-value marine chemicals, such as sodium chloride products, potassium products, bromine products, and magnesium products, from the concentrated brine produced by seawater desalination processes.

[0011] In summary, the system device disclosed herein deeply couples processes such as nuclear power, seawater desalination, nuclear hydrogen production, carbon capture, power-to-gas conversion, and potassium, bromine, and magnesium extraction and purification to form a zero-carbon cycle chain of "nuclear power → hydrogen production → CO2 methanation → energy feedback," achieving safe and reasonable utilization of nuclear power and possessing good economic benefits.

[0012] It should be noted that the nuclear power generation unit disclosed herein is preferably located in a coastal area.

[0013] The following are preferred technical solutions of this disclosure, but are not intended to limit the technical solutions provided by this disclosure. The technical objectives and beneficial effects of this disclosure can be better achieved through the following technical solutions.

[0014] As a preferred technical solution of this disclosure, the nuclear power generation unit includes a pressurized water reactor nuclear power generation module and / or a high-temperature gas-cooled reactor nuclear power generation module.

[0015] In this disclosure, secondary loop steam refers to steam generated in a pressurized water reactor nuclear power plant through heat exchange via a steam generator, without direct contact with the reactor core. Part of this steam is used to drive the turbine generator set for power generation, and another part is used for other energy-intensive processes described in this disclosure, such as seawater desalination.

[0016] Waste heat steam includes the exhaust steam generated after the steam turbine generator set generates electricity.

[0017] As a preferred technical solution of this disclosure, the steam seawater desalination module includes a multi-effect distillation device and / or a low-temperature multi-effect evaporation device.

[0018] As a preferred technical solution of this disclosure, the electrolytic hydrogen production unit includes a proton exchange membrane water electrolysis hydrogen production module and / or a solid oxide electrolysis cell hydrogen production module.

[0019] In this disclosure, the pressurized water reactor nuclear power generation module mainly adopts the pressurized water reactor nuclear power unit; the high temperature gas-cooled reactor nuclear power generation module mainly adopts the solid oxide electrolyzer for hydrogen production.

[0020] As a preferred technical solution of this disclosure, the metal salt separation unit includes a potassium salt extraction module, a magnesium chloride extraction module, and a sodium chloride extraction module; The potassium salt extraction module includes an enrichment device for separating impurity ions from concentrated brine and achieving preliminary enrichment of potassium ions to obtain a primary concentrate. A concentration device is used to concentrate potassium ions in the primary concentrate to obtain a secondary concentrate; Purification equipment is used to remove residual impurity ions from the intermediate concentrate to obtain a purified solution; And a first evaporation and crystallization device, used to evaporate and crystallize the purified solution to obtain potassium salt products; The magnesium chloride extraction module includes a first evaporation device for precipitating sodium chloride and part of magnesium sulfate to obtain mother liquor; A solid-liquid separation device is used to separate the mother liquor into solid and liquid components to obtain a medium-grade solution; The second evaporation device is used to evaporate and concentrate the intermediate solution to obtain a concentrated solution; And a cooling crystallization device for cooling and crystallizing the concentrated solution to obtain magnesium chloride product; The sodium chloride extraction module includes a reverse osmosis device and a second evaporation crystallization device connected in sequence.

[0021] As a preferred technical solution of this disclosure, the nuclear power multi-electrode consumption system further includes an electrolytic magnesium unit, which uses the nuclear power generated by the nuclear power generation unit to electrolyze magnesium chloride from the metal salt separation unit to obtain magnesium and chlorine gas.

[0022] As a preferred technical solution of this disclosure, the nuclear power multi-electrode consumption system further includes an ammonia synthesis unit, which is used to use the nuclear power generated by the nuclear power generation unit to react hydrogen from the electrolysis hydrogen production unit and / or hydrogen from the chlor-alkali electrolysis unit with nitrogen to generate ammonia.

[0023] As a preferred technical solution of this disclosure, the nuclear power multi-electrode consumption system further includes a methanol synthesis unit, which uses the nuclear power generated by the nuclear power generation unit to react hydrogen from the chlor-alkali electrolysis unit and / or from the electrolysis hydrogen production unit with CO2 from the CO2 capture unit to generate methanol.

[0024] As a preferred technical solution of this disclosure, the nuclear power multi-electrode consumption system device further includes a radioactive isotope production unit, which is used to produce radioactive isotopes using the nuclear power generated by the nuclear power generation unit during periods of low grid load.

[0025] As a preferred technical solution of this disclosure, the nuclear power multi-electrode consumption system device further includes an electrochemical seawater uranium extraction unit, which is used to extract uranium from seawater using the nuclear power generation unit during off-peak grid load periods.

[0026] The technical solution provided in this disclosure has the following advantages compared with the prior art: This disclosure addresses the challenges and pain points of existing nuclear power consumption technologies, such as their monotonous nature and severe inadequacy in consumption capacity. It breaks through the limitations of existing technologies and provides a multi-element nuclear power consumption system device. The processes involved are characterized by high energy consumption, high coupling, and high added value. It can not only consume nuclear power on a large scale and has high technical and economic efficiency, but also solve the problem that the severe inadequacy of nuclear power consumption in existing technologies may have a negative impact on the safe operation of nuclear power units. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0028] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of a nuclear power multi-electrode consumption system device according to a specific embodiment of this disclosure.

[0030] The system comprises: 1. Nuclear power generation unit; 2. Seawater desalination unit; 3. Electrolytic hydrogen production unit; 4. Metal salt separation unit; 401. Potassium salt extraction module; 402. Magnesium chloride extraction module; 403. Sodium chloride extraction module; 5. CO2 capture unit; 6. Chlor-alkali electrolysis unit; 7. Methane synthesis unit; 8. Seawater bromine extraction unit; 9. Electrolytic magnesium unit; 10. Ammonia synthesis unit; 11. Methanol synthesis unit; 12. Radioactive isotope production unit; and 13. Electrochemical seawater uranium extraction unit.

[0031] In the diagram, the lightning bolt symbol represents the unit's use of nuclear power. Detailed Implementation

[0032] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0033] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0034] Unless otherwise specified, the equipment used in each unit process in this disclosure are all conventional equipment that can be obtained through existing channels.

[0035] The nuclear power multi-electrode consumption system of this disclosure is described below with reference to the accompanying drawings.

[0036] like Figure 1 As shown, this disclosure provides a nuclear power multi-electrode consumption system device, comprising: Nuclear power generation unit 1 is used to provide nuclear power, secondary loop steam, and waste heat steam; Seawater desalination unit 2 includes an electrodialysis seawater desalination module for using nuclear power from the nuclear power generation unit 1 to desalinate seawater to obtain fresh water and concentrated brine; and / or a steam seawater desalination module for using nuclear power from the nuclear power generation unit 1, secondary loop steam, and waste heat steam to desalinate seawater to obtain fresh water and concentrated brine. Electrolysis hydrogen production unit 3 is used to electrolyze fresh water from the seawater desalination unit 2 to produce hydrogen using nuclear power from the nuclear power generation unit 1. Metal salt separation unit 4 is used to separate metal salts from the concentrated brine from the seawater desalination unit 2 to obtain magnesium chloride, potassium salt and sodium chloride respectively; CO2 capture unit 5 is used to capture CO2 using nuclear power generated by nuclear power generation unit 1; The chlor-alkali electrolysis unit 6 is used to electrolyze sodium chloride from the metal salt separation unit 4 using nuclear power from the nuclear power generation unit 1 to produce sodium hydroxide, chlorine and hydrogen. Methane synthesis unit 7 is used to synthesize methane from hydrogen from the electrolysis hydrogen production unit 3 and / or from the chlor-alkali electrolysis unit 6 and CO2 from the CO2 capture unit 5 using nuclear power from the nuclear power generation unit 1. And, seawater bromine extraction unit 8, used to extract bromine from seawater using nuclear power from nuclear power generation unit 1, chlorine from chlor-alkali electrolysis unit 6, and sodium hydroxide.

[0037] In some embodiments of this disclosure, the nuclear power generation unit 1 includes a pressurized water reactor nuclear power generation module and / or a high-temperature gas-cooled reactor nuclear power generation module.

[0038] In some embodiments of this disclosure, the steam seawater desalination module includes a multi-effect distillation device and / or a low-temperature multi-effect evaporation device.

[0039] In some embodiments of this disclosure, the electrolytic hydrogen production unit 3 includes a proton exchange membrane water electrolysis hydrogen production module and / or a solid oxide electrolysis cell hydrogen production module.

[0040] In some embodiments of this disclosure, the metal salt separation unit 4 includes a potassium salt extraction module 401, a magnesium chloride extraction module 402, and a sodium chloride extraction module 403; The potassium salt extraction module 401 includes enrichment devices connected in sequence, used to separate impurity ions in concentrated brine and achieve preliminary enrichment of potassium ions to obtain a primary concentrate. The concentration equipment is used to concentrate potassium ions in the primary concentrate to obtain the secondary concentrate; Purification equipment is used to remove residual impurity ions from intermediate concentrate to obtain a purified solution; And the first evaporation and crystallization equipment, used for evaporating and crystallizing the purified solution to obtain potassium salt products; The magnesium chloride extraction module 402 includes a first evaporation device connected in sequence, used to precipitate sodium chloride and part of magnesium sulfate to obtain mother liquor; Solid-liquid separation equipment is used to separate the solids and liquids of the mother liquor to obtain a medium-grade solution; The second evaporation unit is used to evaporate and concentrate the intermediate solution to obtain a concentrated solution; And cooling crystallization equipment, used to cool and crystallize concentrated solutions to obtain magnesium chloride products; The sodium chloride extraction module 403 includes a reverse osmosis device and a second evaporation crystallization device connected in sequence.

[0041] In some embodiments of this disclosure, the nuclear power multi-electrode consumption system further includes an electrolytic magnesium unit 9, which uses the nuclear power generated by the nuclear power generation unit 1 to electrolyze magnesium chloride from the metal salt separation unit 4 to obtain magnesium and chlorine gas.

[0042] In some embodiments of this disclosure, the nuclear power multi-electrode consumption system further includes an ammonia synthesis unit 10, which uses the nuclear power generated by the nuclear power generation unit 1 to react hydrogen from the electrolysis hydrogen production unit 3 and / or hydrogen from the chlor-alkali electrolysis unit 6 with nitrogen to generate ammonia.

[0043] In some embodiments of this disclosure, the nuclear power multi-electrode consumption system further includes a methanol synthesis unit 11, which uses the nuclear power generated by the nuclear power generation unit 1 to react hydrogen from the chlor-alkali electrolysis unit 6 and / or from the electrolysis hydrogen production unit 3 with CO2 from the CO2 capture unit 5 to generate methanol.

[0044] In some embodiments of this disclosure, the nuclear power multi-electrode consumption system further includes a radioactive isotope production unit 12, used to produce radioactive isotopes using the nuclear power generated by the nuclear power generation unit 1 during periods of low grid load.

[0045] In some embodiments of this disclosure, the nuclear power multi-electrode consumption system further includes an electrochemical seawater uranium extraction unit 13, used to produce radioactive isotopes using the nuclear power generated by the nuclear power generation unit 1 during periods of low grid load.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A nuclear power multi-element energy consumption system device, characterized in that, include: Nuclear power generation unit, used to provide nuclear power, secondary loop steam and waste heat steam; The seawater desalination unit includes an electrodialysis seawater desalination module for using nuclear power from the nuclear power generation unit to desalinate seawater to obtain fresh water and concentrated brine; and / or a steam seawater desalination module for using nuclear power from the nuclear power generation unit, secondary loop steam, and waste heat steam to desalinate seawater to obtain fresh water and concentrated brine. An electrolysis hydrogen production unit is used to electrolyze fresh water from the seawater desalination unit to produce hydrogen using nuclear power from the nuclear power generation unit. A metal salt separation unit is used to separate metal salts from the concentrated brine from the seawater desalination unit, yielding magnesium chloride, potassium salt, and sodium chloride, respectively. A CO2 capture unit is used to capture CO2 using nuclear power generated by the nuclear power generation unit. The chlor-alkali electrolysis unit is used to electrolyze sodium chloride from the metal salt separation unit using nuclear power from the nuclear power generation unit to produce sodium hydroxide, chlorine and hydrogen. A methane synthesis unit is used to synthesize methane from hydrogen produced by electrolysis and / or from chlor-alkali electrolysis unit and CO2 from CO2 capture unit using nuclear power from the nuclear power generation unit. And a seawater bromine extraction unit, used to extract bromine from seawater using nuclear power from the nuclear power generation unit, chlorine from the chlor-alkali electrolysis unit, and sodium hydroxide.

2. The nuclear power multi-element consumption system device according to claim 1, characterized by, The nuclear power generation unit includes a pressurized water reactor nuclear power generation module and / or a high-temperature gas-cooled reactor nuclear power generation module.

3. The nuclear power multi-element consumption system device of claim 1, wherein, The steam seawater desalination module includes a multi-effect distillation device and / or a low-temperature multi-effect evaporation device.

4. The nuclear power multi-element consumption system device of claim 1, wherein, The electrolytic hydrogen production unit includes a proton exchange membrane water electrolysis hydrogen production module and / or a solid oxide electrolysis cell hydrogen production module.

5. The nuclear power multi-element consumption system device of claim 1, wherein, The metal salt separation unit includes a potassium salt extraction module, a magnesium chloride extraction module, and a sodium chloride extraction module; The potassium salt extraction module includes an enrichment device for separating impurity ions from concentrated brine and achieving preliminary enrichment of potassium ions to obtain a primary concentrate. A concentration device is used to concentrate potassium ions in the primary concentrate to obtain a secondary concentrate; Purification equipment is used to remove residual impurity ions from the intermediate concentrate to obtain a purified solution. And a first evaporation and crystallization device, used to evaporate and crystallize the purified solution to obtain potassium salt products; The magnesium chloride extraction module includes a first evaporation device for precipitating sodium chloride and part of magnesium sulfate to obtain mother liquor; A solid-liquid separation device is used to separate the mother liquor into solid and liquid components to obtain a medium-grade solution; The second evaporation device is used to evaporate and concentrate the intermediate solution to obtain a concentrated solution; And a cooling crystallization device for cooling and crystallizing the concentrated solution to obtain magnesium chloride product; The sodium chloride extraction module includes a reverse osmosis device and a second evaporation crystallization device connected in sequence.

6. The nuclear power multi-element consumption system device of claim 1, wherein, The nuclear power multi-electrode consumption system also includes an electrolytic magnesium unit, which uses the nuclear power generated by the nuclear power generation unit to electrolyze magnesium chloride from the metal salt separation unit to obtain magnesium and chlorine gas.

7. The nuclear power multi-element consumption system device of claim 1, wherein, The nuclear power multi-element consumption system also includes an ammonia synthesis unit, which uses the nuclear power generated by the nuclear power generation unit to react hydrogen from the electrolysis hydrogen production unit and / or hydrogen from the chlor-alkali electrolysis unit with nitrogen to generate ammonia.

8. The nuclear power multi-electrode consumption system device according to claim 1, characterized in that, The nuclear power multi-electrode consumption system also includes a methanol synthesis unit, which uses the nuclear power generated by the nuclear power generation unit to react hydrogen from the chlor-alkali electrolysis unit and / or from the electrolysis hydrogen production unit with CO2 from the CO2 capture unit to produce methanol.

9. The nuclear power multi-electrode consumption system device according to claim 1, characterized in that, The nuclear power multi-element consumption system also includes a radioactive isotope production unit, which is used to produce radioactive isotopes using the nuclear power generated by the nuclear power generation unit during periods of low grid load.

10. The nuclear power multi-element consumption system device of claim 1, wherein, The nuclear power multi-element consumption system also includes an electrochemical seawater uranium extraction unit, which is used to extract uranium from seawater using the nuclear power generated by the nuclear power generation unit during off-peak grid load periods.

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