Large-size commercial nuclear power unit based heat and power cogeneration method

A technology of combined heat and power generation and nuclear power units, applied in heating methods, household heating, applications, etc., can solve environmental pollution and other problems, and achieve the effect of preventing environmental pollution and preventing release

Inactive Publication Date: 2017-11-17
中核辽宁核电有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved in the present invention is: the exis

Method used

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  • Large-size commercial nuclear power unit based heat and power cogeneration method

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Embodiment 1

[0026] The method of the present invention specifically includes the following steps:

[0027] Step 1. Use the energy generated by nuclear fission to heat the circulating coolant in the primary circuit of the nuclear power plant;

[0028] Step 2. Use the heated coolant in the primary circuit to heat the water in the secondary circuit of the nuclear power plant into steam in the steam generator;

[0029] Step 3. Use part of the steam obtained in step 2 to drive the steam turbine to generate electricity;

[0030] Step 4. Condensate the steam that has completed the power generation of the steam turbine into water, and pump it back to the steam generator to be heated again;

[0031] Step 5. Extract part of the steam from the steam turbine for heating;

[0032] Step 6. Use the steam extracted from the steam turbine to exchange heat with the intermediate heat exchange circuit for the first time to heat the circulating water in the intermediate heat exchange circuit. There is water circulating...

Embodiment 2

[0036] The difference between this embodiment and the first embodiment is that in step 5, the position where part of the steam is extracted from the steam turbine is between the high pressure cylinder and the low pressure cylinder of the steam turbine.

Embodiment 3

[0038] The difference between this embodiment and the second embodiment is that the radioactivity in the circulating water of the heating network is monitored in real time to prevent the radioactivity of the circulating water of the heating network from exceeding the standard.

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Abstract

The invention belongs to the technical field of nuclear power heat supply, and particularly relates to a large-size commercial nuclear power unit based heat and power cogeneration method. The heat and power cogeneration method includes: using energy generated by nuclear fission to a heat a circular flow coolant in a first loop of a nuclear power plant; heating water in a second loop of the nuclear power plant into steam; and allowing part of steam to push a steam turbine to generate power; extracting the other part of steam from the steam turbine to supply heat. The technical problem of environment pollution due to the conventional coal and gas heating plants can be avoided; bled steam from the nuclear power plant is used for providing heat, and then the problem of environment pollution due to the conventional coal and gas heating plants can be prevented; four loops are arranged from the radioactive first loop system of the nuclear power plant to a regional heat supply network user, reasonable radioactive monitoring is performed, and radioactive matters can be prevent from be released to the heat supply network user.

Description

Technical field [0001] The invention belongs to the technical field of nuclear power heating, and specifically relates to a cogeneration method based on a large-scale commercial nuclear power unit. Background technique [0002] At present, most of the urban heating plants in northern my country use coal and natural gas as their main fuels. Coal-fired heating plants will cause emissions of dust, sulfides, nitrogen oxides, and carbon dioxide due to coal combustion. These emissions will cause atmospheric pollution, causing haze and the greenhouse effect. Although natural gas heating plants only emit carbon dioxide, carbon dioxide is also one of the main culprits of the greenhouse effect. [0003] The number of nuclear power plants built and under construction in northern China is increasing. Local governments hope that nuclear power plants can undertake more local public service obligations while producing electricity. The realization of cogeneration of large nuclear power plants is ...

Claims

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Application Information

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IPC IPC(8): F01D15/10F01K11/02F24D3/02
CPCY02P80/15F01D15/10F01K11/02F24D3/02F24D2200/32
Inventor 徐力葛政法林学忠李必成龚鑫
Owner 中核辽宁核电有限公司
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