A power generation and heating device and method for cascade utilization of high temperature gas-cooled reactors

Abstract

The present invention provides a power generation and heat supply device and method for cascade utilization of high-temperature gas-cooled reactors, comprising a high-temperature gas-cooled reactor, a high-temperature heat collector, a carbon dioxide turbine, a carbon dioxide circulation unit and a low-temperature industrial heat source driving unit. The present invention firstly utilizes the heat of the high-quality high-temperature gas-cooled reactor to perform carbon dioxide circulation power generation, further improving the power generation efficiency and realizing the effective utilization of the heat of the high-quality high-temperature gas-cooled reactor; utilizes the helium waste heat with a temperature of about 400°C after power generation and the high-temperature carbon dioxide in the heat regenerator to drive the generator in the absorption heat pump, thereby realizing the improvement of the quality of the low-temperature industrial waste heat and improving the utilization efficiency of the low-temperature industrial waste heat; the carbon dioxide power generation system in the device is compact in size and occupies a small space, reducing the overall volume and cost of the high-temperature gas-cooled reactor utilization system.

Description

Technical Field

[0001] The invention belongs to the field of power generation, and in particular relates to a power generation and heating device and method for cascade utilization of high-temperature gas-cooled reactors. Background Art

[0002] High-temperature reactors are fourth-generation reactors with inherent safety. Compared with third-generation nuclear power technology, they have the characteristics of flexible layout, high thermal efficiency, good safety, and simple system. They are an effective way to achieve carbon peak and carbon neutrality in the future, especially in cogeneration and high-temperature heat utilization. Both at home and abroad, corresponding deployments have been made for the development planning of high-temperature gas-cooled reactors. At present, the demonstration of grid-connected power generation of high-temperature gas-cooled reactors has been steadily carried out in my country and achieved important results.

[0003] The temperature of helium at the outlet of the primary circuit of the high-temperature gas-cooled reactor reaches above 750°C. At present, the heat of the high-temperature gas-cooled reactor is generally used to generate high-temperature and high-pressure steam. In addition to the conventional cogeneration application based on steam units, the high-temperature helium at the outlet of the high-temperature gas-cooled reactor can also be used in other high-temperature heat utilization scenarios, such as iodine-sulfur hydrogen production, helium turbine power generation, and supercritical carbon dioxide Brayton cycle power generation. The iodine-sulfur hydrogen production cycle mainly includes Bunsen reaction and acid separation, hydrogen iodide concentration and decomposition, sulfuric acid concentration and decomposition. The reaction temperature of the third step is 800-900°C, so the helium temperature of the high-temperature gas-cooled reactor needs to reach about 950°C. The research on the helium turbine power generation cycle mainly focuses on the cycle form and cycle efficiency, including the overall Brayton cycle and combined cycle, the influence of inlet and outlet temperature parameters, etc.

[0004] At present, the direct use of high-temperature gas-cooled reactors for steam cogeneration has the following problems:

[0005] 1. The primary medium outlet temperature of the high-temperature gas-cooled reactor is 750°C, and a more efficient circulation method can be adopted.

[0006] 2. The volume of high-temperature gas-cooled reactor units is relatively small. In comparison, steam cycle units are larger in size and have higher supporting construction costs. Summary of the invention

[0007] The object of the present invention is to provide a power generation and heating device and method for cascade utilization of high temperature gas-cooled reactors, which solves the above-mentioned shortcomings in the prior art.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is:

[0009] The present invention provides a high-temperature gas-cooled reactor cascade utilization power generation and heating device, comprising a high-temperature gas-cooled reactor, a high-temperature heat collector, a carbon dioxide turbine, a carbon dioxide circulation unit and a low-temperature industrial heat source drive unit, wherein the high-temperature medium outlet of the high-temperature gas-cooled reactor is connected to the high-temperature medium inlet provided on the high-temperature heat collector; the supercritical carbon dioxide outlet provided on the high-temperature heat collector is connected to the supercritical carbon dioxide inlet of the carbon dioxide turbine;

[0010] The low-temperature carbon dioxide outlet of the carbon dioxide turbine is connected to the inlet of the carbon dioxide circulation unit, and the carbon dioxide circulation unit is provided with a heat network return water inlet, a heat network water supply outlet and a carbon dioxide outlet, wherein the carbon dioxide outlet is connected to the carbon dioxide inlet provided on the high-temperature heat collector; the heat network water supply outlet is connected to the heat network water supply equipment;

[0011] The high-temperature circulating medium outlet arranged on the high-temperature heat extractor is connected to the high-temperature circulating medium inlet arranged on the low-temperature industrial heat source driving unit, and the low-temperature industrial heat source driving unit is provided with a heat network return water inlet and a heat network water supply outlet, wherein the heat network water supply outlet is connected to the heat network water supply equipment.

[0012] Preferably, the carbon dioxide circulation unit comprises a carbon dioxide low-temperature regenerator, a carbon dioxide high-temperature regenerator, a carbon dioxide cooler and a carbon dioxide compressor, wherein the low-temperature carbon dioxide outlet of the carbon dioxide turbine is connected to the low-temperature side inlet provided on the carbon dioxide high-temperature regenerator, the low-temperature side outlet on the carbon dioxide high-temperature regenerator is divided into two paths, one path is connected to the low-temperature side inlet of the carbon dioxide low-temperature regenerator, and the other path is connected to the carbon dioxide inlet of the low-temperature industrial heat source driving unit; the low-temperature side outlet of the carbon dioxide low-temperature regenerator is connected to the carbon dioxide inlet of the carbon dioxide cooler, and the carbon dioxide outlet of the carbon dioxide cooler is connected to the carbon dioxide high-temperature regenerator through the carbon dioxide compressor and the carbon dioxide low-temperature regenerator in sequence;

[0013] The carbon dioxide cooler is provided with a heat network return water inlet and a heat network water supply outlet, and the heat network water supply outlet is connected to the heat network water supply equipment.

[0014] Preferably, the low-temperature industrial heat source driving unit comprises a generator, a condenser, an evaporator, an absorber and a low-temperature industrial heat source generator, wherein the carbon dioxide inlet on the generator is connected to the carbon dioxide outlet of the carbon dioxide circulation unit; the evaporation solvent outlet on the generator is connected to the solvent inlet of the condenser, and the condensed solvent outlet on the condenser is connected to the condensed solvent inlet of the evaporator;

[0015] The circulating medium inlet and outlet on the evaporator are connected to the circulating medium inlet and outlet of the low-temperature industrial heat source generator;

[0016] The absorber is provided with a heat network return water inlet and a heat network return water outlet, wherein the heat network return water outlet is connected to the heat network water inlet provided on the condenser, and the heat network water supply outlet on the condenser is connected to the heat network water supply equipment;

[0017] The gas outlet on the evaporator is connected to the gas inlet of the absorber.

[0018] Preferably, a solvent throttle valve is provided between the condenser and the evaporator.

[0019] Preferably, the solution outlet of the generator is connected to the absorber through a solution heat exchanger;

[0020] The dilute solution outlet on the absorber is connected to the solution inlet of the generator through a solution heat exchanger.

[0021] Preferably, a concentrated solution expansion valve is provided between the concentrated solution outlet of the solution heat exchanger and the inlet of the absorber.

[0022] Preferably, a solution pump is provided between the dilute solution inlet of the solution heat exchanger and the dilute solution outlet of the absorber.

[0023] A method for power generation and heating by cascade utilization of high temperature gas-cooled reactors, comprising the following steps:

[0024] The carbon dioxide is heated by the heat of a high temperature gas-cooled reactor to form supercritical carbon dioxide; the supercritical carbon dioxide is used to generate electricity;

[0025] The waste heat after supercritical carbon dioxide cooling and the heat of the high-temperature gas-cooled reactor after heat release are combined with low-temperature industrial heat sources as low-temperature driving heat sources to heat the heat network return water.

[0026] Preferably, the high temperature medium enters the high temperature heat extractor after the high temperature gas-cooled reactor absorbs the high temperature heat of the high temperature gas-cooled reactor;

[0027] The high-pressure carbon dioxide fluid from the carbon dioxide high-temperature regenerator absorbs heat in the high-temperature heat collector and then enters the carbon dioxide turbine to generate electricity;

[0028] After that, the low-temperature carbon dioxide returns to the carbon dioxide high-temperature regenerator for heat exchange. After the heat exchange, part of the low-temperature carbon dioxide enters the carbon dioxide low-temperature regenerator and the carbon dioxide cooler in turn, and is cooled by the low-temperature heat network return water; the cooled carbon dioxide enters the carbon dioxide compressor, and the pressurized carbon dioxide enters the carbon dioxide low-temperature regenerator and the carbon dioxide high-temperature regenerator in turn for heat exchange, and then enters the high-temperature heat collector;

[0029] Another part of the low-temperature carbon dioxide enters the low-temperature industrial heat source unit, and the heat of the high-temperature gas-cooled reactor after heat release is combined with the low-temperature industrial heat source as a low-temperature driving heat source to heat the return water of the heat network.

[0030] Preferably, the high-temperature circulating medium releases heat to the carbon dioxide in the high-temperature heat extractor before entering the generator, and at the same time, another portion of carbon dioxide from the carbon dioxide circulation unit also enters the generator;

[0031] The salt solution in the generator is heated by the high-temperature medium, the solvent in the solution evaporates, and the concentration of the solution increases; the evaporated solvent enters the condenser and condenses into liquid, releasing heat that is absorbed by the hot water network from the absorber;

[0032] The condensed solvent enters the evaporator, where it is further heated by the low-temperature circulating medium from the low-temperature industrial heat source generator, evaporates into gas, and enters the absorber;

[0033] The return water from the heating network first enters the absorber for primary heating, and then enters the condenser for secondary heating.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] The present invention provides a power generation and heating device and method for cascade utilization of high-temperature gas-cooled reactors. First, the heat of high-grade high-temperature gas-cooled reactors is used to circulate carbon dioxide for power generation, which further improves the power generation efficiency and realizes the effective utilization of the heat of high-grade high-temperature gas-cooled reactors. The helium waste heat with a temperature of about 400°C after power generation and the high-temperature carbon dioxide in the regenerator are used to drive the generator in the absorption heat pump, thereby realizing the improvement of the quality of low-temperature industrial waste heat and improving the utilization efficiency of low-temperature industrial waste heat. The carbon dioxide power generation system in the device is compact in size and occupies a small space, which reduces the overall volume and cost of the high-temperature gas-cooled reactor utilization system. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a system structure diagram involved in the present invention. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0038] like Figure 1 As shown, the present invention provides a power generation and heating device and method for cascade utilization of high-temperature gas-cooled reactors. On the one hand, supercritical carbon dioxide is used to generate electricity, making full use of the high-quality thermal energy of the high-temperature gas-cooled reactor to generate electricity; on the other hand, absorption heat pump technology is adopted, and the heat of the high-temperature gas-cooled reactor after releasing heat to carbon dioxide is used as a high-temperature driving heat source, and a low-temperature industrial heat source is used as a low-temperature driving heat source, which is used together with the waste heat in the cooling process of supercritical carbon dioxide for heating water supply in the heat network, thereby realizing comprehensive and in-depth utilization of the high-temperature gas-cooled reactor.

[0039] The present invention provides a power generation and heating device for cascade utilization of a high-temperature gas-cooled reactor, comprising a high-temperature gas-cooled reactor 1, a high-temperature heat collector 2, a generator 3, a carbon dioxide turbine 4, a low-temperature carbon dioxide heat regenerator 5, a high-temperature carbon dioxide heat regenerator 6, a carbon dioxide cooler 7, a carbon dioxide compressor 8, a condenser 9, an evaporator 10, an absorber 11, a solution heat exchanger 12, an expansion valve 13, a solution pump 14, a low-temperature industrial heat source 15 and a solvent throttle valve 16, wherein the high-temperature medium outlet of the high-temperature gas-cooled reactor heat source 1 is connected to the high-temperature medium inlet of the generator 3 through the high-temperature heat collector 2.

[0040] The high-temperature heat collector 2 is provided with a carbon dioxide fluid inlet and a supercritical carbon dioxide outlet, wherein the carbon dioxide fluid inlet is connected to the carbon dioxide fluid outlet provided on the carbon dioxide low-temperature heat regenerator 6; the supercritical carbon dioxide outlet is divided into two paths, one of which is connected to the carbon dioxide inlet of the carbon dioxide turbine 4; and the other is connected to the carbon dioxide inlet provided on the generator 3.

[0041] The low-temperature circulating medium outlet arranged on the generator 3 is connected to the low-temperature industrial heat source generator 15 through the solution heat exchanger 12, the absorber 11, the condenser 9 and the evaporator 10 in sequence.

[0042] The high-temperature circulating medium outlet provided on the low-temperature industrial heat source generator 15 is connected to the high-temperature circulating medium inlet provided on the evaporator 10 .

[0043] The generator 3 is provided with a solvent outlet, and the solvent outlet is connected to a solvent inlet provided on the condenser 9 .

[0044] The high-temperature water outlet provided on the condenser 9 is connected to the heating network water supply equipment.

[0045] The condensing agent outlet arranged on the condenser 9 is connected to the solvent inlet of the evaporator 10 through the solvent throttle valve 16 .

[0046] The evaporator 10 is provided with a gas outlet, and the gas outlet is connected to the gas inlet of the absorber 11 .

[0047] The dilute solution outlet provided on the absorber 11 is connected to the solution inlet of the solution heat exchanger 12 through a solution pump 14 .

[0048] The low-temperature solution outlet provided on the solution heat exchanger 12 is connected to the solution inlet provided on the absorber 1 through the solution expansion valve 12 .

[0049] The absorber 1 is provided with a heat network return water inlet, the high-temperature heat network return water outlet provided on the absorber 11 is connected to the high-temperature water inlet of the condenser 9, and the high-temperature water outlet provided on the condenser is connected to the heat network water supply equipment.

[0050] The carbon dioxide exhaust steam outlet arranged on the carbon dioxide turbine 4 is connected to the carbon dioxide inlet arranged on the carbon dioxide high-temperature regenerator 5 through the carbon dioxide low-temperature regenerator 6 .

[0051] The carbon dioxide fluid inlet provided on the carbon dioxide low-temperature regenerator 6 is connected to the carbon dioxide fluid outlet provided on the carbon dioxide high-temperature regenerator 5 .

[0052] The carbon dioxide high-temperature heat exchanger 5 is provided with a high-pressure carbon dioxide inlet, and the high-pressure carbon dioxide inlet is connected to a high-pressure carbon dioxide outlet provided on the carbon dioxide compressor 8 .

[0053] The carbon dioxide high-temperature heat exchanger 5 is provided with a low-temperature carbon dioxide outlet, and the low-temperature carbon dioxide outlet is connected to the carbon dioxide inlet of the carbon dioxide cooler 7 .

[0054] The low-temperature carbon dioxide outlet provided on the carbon dioxide cooler 7 is connected to the carbon dioxide inlet provided on the carbon dioxide compressor 8 .

[0055] The carbon dioxide cooler 7 is provided with a heat network return water inlet and a heat network water supply outlet, and the heat network water supply outlet is connected to the heat network water supply equipment.

[0056] The carbon dioxide outlet provided on the carbon dioxide low-temperature heat exchanger 6 is also connected to the carbon dioxide inlet provided on the generator 3 .

[0057] Working process of the present invention:

[0058] The utilization of heat from the high-temperature gas-cooled reactor mainly includes the use of supercritical carbon dioxide power generation to generate electricity and drive the evaporation of the solution in the generator of the absorption heat pump.

[0059] The high-temperature medium such as helium first absorbs the high-temperature heat of the high-temperature gas-cooled reactor in the high-temperature gas-cooled reactor 1, and its own temperature reaches above 600° C., and then enters the high-temperature heat collector 2.

[0060] The high-pressure carbon dioxide fluid from the carbon dioxide high-temperature regenerator 6 absorbs heat in the high-temperature heat exchanger 2, enters the carbon dioxide turbine 4 to generate power, and then returns to the carbon dioxide high-temperature regenerator 6 for heat exchange, and the temperature drops to about 300°C; then a part of the low-temperature carbon dioxide enters the carbon dioxide low-temperature regenerator 5 and the carbon dioxide cooler 7 in turn, and is cooled by the low-temperature return water from the heat network, and its own temperature reaches a critical temperature of about 35°C, and the temperature of the return water from the heat network reaches about 60°C; the cooled carbon dioxide enters the carbon dioxide compressor 8, and the pressurized carbon dioxide enters the carbon dioxide low-temperature regenerator 5 and the carbon dioxide high-temperature regenerator 6 in turn for heat exchange, and then enters the high-temperature heat exchanger 2; a carbon dioxide power generation cycle is formed, and this part realizes the conversion of high-temperature gas-cooled reactor heat into high-quality electrical energy through the circulation of carbon dioxide working fluid.

[0061] After releasing heat to carbon dioxide in the high-temperature heat collector 2, the high-temperature circulating medium still has a temperature of about 400°C. The absorption heat pump is used to recover this part of the heat and low-temperature industrial waste heat.

[0062] The high-temperature circulating medium enters the generator 3 from the high-temperature heat extractor 2. At the same time, another part of the carbon dioxide coming out of the carbon dioxide high-temperature regenerator 6 also enters the generator 3. The low-temperature circulating medium absorbs heat in the low-temperature industrial heat source generator 15 and enters the evaporator 10.

[0063] The salt solution composed of salt and solvent in the generator 3 is heated by the high-temperature medium, the solvent in the solution evaporates, and the concentration of the solution increases; wherein, the evaporated solvent enters the condenser 9 and condenses into liquid, and the heat released is absorbed by the hot network water;

[0064] After the condensed solvent is throttled by the solvent throttle valve 16, the pressure decreases and the corresponding saturation temperature decreases. The solvent itself approaches the saturation point and enters the evaporator 10. In the evaporator 10, it is further heated by the low-temperature circulating medium, evaporates into gas, and enters the absorber 11.

[0065] The concentrated solution produced by the heating and evaporation of the generator 3 first enters the solution heat exchanger 12 to exchange heat with the dilute solution delivered by the solution pump 14, and then enters the absorber 11 after being throttled by the solution expansion valve 13.

[0066] The concentrated solution in the absorber 11 absorbs the low-pressure water vapor from the evaporator 10, releasing latent heat and heat of solution.

[0067] The return water from the heating network first enters the absorber 11 for primary heating, and then enters the condenser 9 for secondary heating. It is then used together with the heating network supply water heated in the carbon dioxide cooler 7 for heating the heating network, thereby completing the heating function.

[0068] The technical effects achieved by the present invention are:

[0069] 1. Through the combination of carbon dioxide power generation and absorption heat pump, the cascade recovery and utilization of high-temperature gas-cooled reactor heat for power generation and heating can be achieved.

[0070] 2. By adopting absorption heat pumps, the heat of high-temperature gas-cooled reactors is further utilized to improve the quality of low-temperature industrial waste heat, thus achieving comprehensive utilization of high-temperature gas-cooled reactor heat and industrial waste heat.

[0071] 3. The heat generated during the cooling process of the power generation medium carbon dioxide is used to recycle the waste heat from power generation to supply water to the heating network.

[0072] First, the heat from the high-grade high-temperature gas-cooled reactor is used for carbon dioxide circulation power generation, which further improves the power generation efficiency and realizes the effective utilization of the heat from the high-grade high-temperature gas-cooled reactor.

[0073] The generator in the absorption heat pump is driven by the waste heat of helium with a temperature of about 400°C after power generation and the high-temperature carbon dioxide in the recuperator, thereby improving the quality of low-temperature industrial waste heat and increasing the utilization efficiency of low-temperature industrial waste heat.

[0074] The carbon dioxide power generation system is compact and occupies little space, reducing the overall volume and cost of the high-temperature gas-cooled reactor utilization system.

Claims

1. A power generation and heating device using high temperature gas-cooled reactors in cascades, characterized in that: The invention comprises a high temperature gas-cooled reactor (1), a high temperature heat collector (2), a carbon dioxide turbine (4), a carbon dioxide circulation unit and a low temperature industrial heat source drive unit, wherein the high temperature medium outlet of the high temperature gas-cooled reactor (1) is connected to the high temperature medium inlet provided on the high temperature heat collector (2); the supercritical carbon dioxide outlet provided on the high temperature heat collector (2) is connected to the supercritical carbon dioxide inlet of the carbon dioxide turbine (4); The low-temperature carbon dioxide outlet of the carbon dioxide turbine (4) is connected to the inlet of a carbon dioxide circulation unit, and the carbon dioxide circulation unit is provided with a heat network return water inlet, a heat network water supply outlet and a carbon dioxide outlet, wherein the carbon dioxide outlet is connected to the carbon dioxide inlet provided on the high-temperature heat collector (2); the heat network water supply outlet is connected to the heat network water supply equipment; The high-temperature circulating medium outlet provided on the high-temperature heat extractor (2) is connected to the high-temperature circulating medium inlet provided on the low-temperature industrial heat source drive unit, and the low-temperature industrial heat source drive unit is provided with a heat network return water inlet and a heat network water supply outlet, wherein the heat network water supply outlet is connected to the heat network water supply equipment; The carbon dioxide circulation unit comprises a carbon dioxide low-temperature regenerator (5), a carbon dioxide high-temperature regenerator (6), a carbon dioxide cooler (7) and a carbon dioxide compressor (8), wherein the low-temperature carbon dioxide outlet of the carbon dioxide turbine (4) is connected to a low-temperature side inlet provided on the carbon dioxide high-temperature regenerator (6), and the low-temperature side outlet on the carbon dioxide high-temperature regenerator (6) is divided into two paths, one of which is connected to the low-temperature side inlet of the carbon dioxide low-temperature regenerator (5), and the other is connected to the carbon dioxide inlet of the low-temperature industrial heat source drive unit; the low-temperature side outlet of the carbon dioxide low-temperature regenerator (5) is connected to the carbon dioxide inlet of the carbon dioxide cooler (7), and the carbon dioxide outlet of the carbon dioxide cooler (7) is connected to the carbon dioxide high-temperature regenerator (6) through the carbon dioxide compressor (8) and the carbon dioxide low-temperature regenerator (5) in sequence; The carbon dioxide cooler (7) is provided with a heat network return water inlet and a heat network water supply outlet, and the heat network water supply outlet is connected to the heat network water supply equipment; The low-temperature industrial heat source driving unit comprises a generator (3), a condenser (9), an evaporator (10), an absorber (11) and a low-temperature industrial heat source generator (15), wherein a carbon dioxide inlet on the generator (3) is connected to a carbon dioxide outlet of a carbon dioxide circulation unit; an evaporation solvent outlet on the generator (3) is connected to a solvent inlet of the condenser (9), and a condensation solvent outlet on the condenser (9) is connected to a condensation solvent inlet of the evaporator (10); The circulating medium inlet and outlet on the evaporator (10) are connected to the circulating medium inlet and outlet of the low-temperature industrial heat source generator (15); The absorber (11) is provided with a heat network return water inlet and a heat network return water outlet, wherein the heat network return water outlet is connected to a heat network water inlet provided on the condenser (9), and the heat network water supply outlet on the condenser (9) is connected to a heat network water supply device; The gas outlet on the evaporator (10) is connected to the gas inlet of the absorber (11).

2. The power generation and heating device for cascade utilization of high temperature gas-cooled reactors according to claim 1, characterized in that: A solvent throttle valve is provided between the condenser (9) and the evaporator (10).

3. The power generation and heating device for cascade utilization of high temperature gas-cooled reactors according to claim 1, characterized in that: The solution outlet of the generator (3) is connected to the absorber (11) through the solution heat exchanger (12); The dilute solution outlet on the absorber (11) is connected to the solution inlet of the generator (3) through the solution heat exchanger (12).

4. The power generation and heating device for cascade utilization of high temperature gas-cooled reactors according to claim 3, characterized in that: A concentrated solution expansion valve (13) is provided between the concentrated solution outlet of the solution heat exchanger (12) and the inlet of the absorber (11).

5. The power generation and heating device for cascade utilization of high temperature gas-cooled reactors according to claim 4, characterized in that: A solution pump (14) is provided between the dilute solution inlet of the solution heat exchanger (12) and the dilute solution outlet of the absorber (11).

6. A method for power generation and heating by cascade utilization of high temperature gas-cooled reactors, characterized in that: The device according to any one of claims 1 to 5 comprises the following steps: The carbon dioxide is heated by the heat of a high temperature gas-cooled reactor to form supercritical carbon dioxide; the supercritical carbon dioxide is used to generate electricity; The waste heat after supercritical carbon dioxide cooling and the heat of the high-temperature gas-cooled reactor after heat release are used in combination with low-temperature industrial heat sources as low-temperature driving heat sources to heat the return water of the heat network; The high temperature medium absorbs the high temperature heat of the high temperature gas-cooled reactor (1) and then enters the high temperature heat collector (2); The high-pressure carbon dioxide fluid from the carbon dioxide high-temperature regenerator (6) absorbs heat in the high-temperature heat extractor (2) and then enters the carbon dioxide turbine (4) to generate electricity; Afterwards, the low-temperature carbon dioxide returns to the carbon dioxide high-temperature regenerator (6) for heat exchange. After the heat exchange, a portion of the low-temperature carbon dioxide enters the carbon dioxide low-temperature regenerator 5 () and the carbon dioxide cooler (7) in turn, and is cooled by low-temperature heat network return water; the cooled carbon dioxide enters the carbon dioxide compressor (8), and the pressurized carbon dioxide enters the carbon dioxide low-temperature regenerator (5) and the carbon dioxide high-temperature regenerator (6) in turn for heat exchange, and then enters the high-temperature heat extractor (2); Another part of the low-temperature carbon dioxide enters the low-temperature industrial heat source unit, and uses the heat from the high-temperature gas-cooled reactor after heat release combined with the low-temperature industrial heat source as a low-temperature driving heat source to heat the return water of the heat network; The high-temperature circulating medium releases heat to the carbon dioxide in the high-temperature heat extractor (2) and then enters the generator (3). At the same time, another portion of the carbon dioxide from the carbon dioxide circulation unit also enters the generator (3); The salt solution in the generator (3) is heated by the high-temperature medium, the solvent in the solution evaporates, and the concentration of the solution increases; wherein the evaporated solvent enters the condenser (9) and condenses into liquid, and the heat released is absorbed by the hot water network from the absorber (11); The condensed solvent enters the evaporator (10), is further heated by the low-temperature circulating medium from the low-temperature industrial heat source generator (15) in the evaporator (10), evaporates into gas, and enters the absorber (11); The return water from the heating network first enters the absorber (11) for primary heating, and then enters the condenser (9) for secondary heating.

Images