Power generation system and method based on coupling of nuclear energy and solar energy

A power generation system and solar energy technology, which is applied in the field of power generation systems based on the coupling of nuclear energy and solar energy, can solve the problems of low steam grade and low power generation efficiency, and achieve the effects of improved cycle thermal efficiency, fast load response, and high energy density

Active Publication Date: 2021-03-16
SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the above problems, the present invention proposes a power generation system and method based on the coupling of nuclear energy and solar energy. Nuclear fuel has the characteristics of convenient transportation and high energy density. Nuclear energy is suitable for use in remote areas. Therefore, the present invention can solve the problem of nuclear energy. The problems of low steam grade and low power generation efficiency can also solve the problem of backup power generation energy for solar concentrating photothermal power plants

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  • Power generation system and method based on coupling of nuclear energy and solar energy
  • Power generation system and method based on coupling of nuclear energy and solar energy

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Embodiment 1

[0040] In one or more embodiments, a power generation system based on coupled nuclear energy and solar energy is disclosed, such as figure 1 As shown, it includes: cooling tower 26, condenser 23, deaerator 19, high pressure heater 14, nuclear island 1, solar heat absorber 9, cold molten salt tank 7, hot molten salt tank 6, molten salt-overheating Steam heat exchanger 4, molten salt-reheat steam heat exchanger 5, steam turbine 2 with base load and steam turbine for coupling;

[0041] Wherein, the steam turbine for coupling includes the high pressure cylinder 15 of the steam turbine for coupling, the medium pressure cylinder 16 of the steam turbine for coupling and the low pressure cylinder 17 of the steam turbine for coupling; the exhaust steam of the high pressure cylinder 15 of the coupling enters the molten salt-reheat steam heat exchanger 5 to be heated After the molten salt is heated, it enters the medium-pressure cylinder 16 of the steam turbine for coupling to do work, a...

Embodiment 2

[0055] In one or more embodiments, a power generation system based on coupled nuclear energy and solar energy is disclosed, such as figure 2 As shown, it includes: cooling tower 26, condenser 23, deaerator 19, high pressure heater 14, nuclear island 1, solar heat absorber 9, cold molten salt tank 7, hot molten salt tank 6, molten salt-overheating Steam heat exchanger 4, steam turbine 2 with base load and coupling steam turbine;

[0056] Wherein, the steam turbine for coupling includes the high-pressure cylinder 15 of the steam turbine for coupling and the low-pressure cylinder 17 of the steam turbine for coupling; the exhaust steam of the high-pressure cylinder 15 of the steam turbine for coupling directly enters the low-pressure cylinder 17 of the steam turbine for coupling to do work, and the exhaust steam and condensation of the low-pressure cylinder 17 of the steam turbine for coupling Steamer 23 is connected.

[0057] The inlet of the circulating water pump 24 is connec...

Embodiment 3

[0070] In one or more embodiments, a method of power generation based on coupling nuclear energy and solar energy is disclosed, comprising:

[0071] The solar heat absorber 9 absorbs sunlight 10 to heat the molten salt in the solar heat absorber 9, and the cold molten salt enters the solar heat absorber 9 from the cold molten salt tank 7 and becomes hot molten salt after being heated, and the hot molten salt enters the hot molten salt tank 6;

[0072] After the feed water is heated, it enters the nuclear island 1, and in the nuclear island 1, it is heated and evaporated to become saturated steam or wet steam with a dryness greater than 0.9. Part of the saturated steam or wet steam with a dryness greater than 0.9 enters the steam turbine 2 with basic load to do work, and the other part enters Molten salt-superheated steam heat exchanger 4;

[0073] The hot molten salt in the hot molten salt tank 6 enters the molten salt-overheated steam heat exchanger 4 to heat the saturated s...

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Abstract

The invention discloses a nuclear energy and solar energy coupling based power generation system and method. The nuclear energy and solar energy coupling based power generation system comprises a solar heat absorber; the solar heat absorber is connected with a cold molten salt tank and a hot molten salt tank; the cold molten salt tank and the hot molten salt tank are connected with a molten salt-superheated steam heat exchanger; a steam outlet of a nuclear island is divided into two paths, one path is connected with a steam turbine with a basic load, and the other path is connected with the molten salt-superheated steam heat exchanger; the steam outlet of the molten salt-superheated steam heat exchanger is connected with a steam turbine for coupling; the steam turbine with the basic load drives a first power generator to generate power; and the steam turbine for coupling drives a second power generator to generate the power. The nuclear energy and solar energy coupling based power generation system provided by the invention fully utilizes the characteristics of convenience in nuclear fuel transportation, larger energy density and the like and the characteristic that a temperature of 800 DEG C or above can be generated after solar light gathering, relatively low temperature steam (with the temperature being 300 DEG C or below generally), going out from the nuclear island, is heated to 400-700 DEG C, the circulation thermal efficiency is greatly improved, and thus the power generation efficiency is greatly improved.

Description

technical field [0001] The invention relates to the field of energy technology, in particular to a power generation system and method based on the coupling of nuclear energy and solar energy. Background technique [0002] Pressurized water reactors are the mainstream technology for modern commercial nuclear power. A conventional pressurized water reactor is generally a two-circuit system, in which the steam in the two-circuit system drives a steam turbine to generate electricity. Due to the limitation of the temperature of the reactor heat carrier (the average outlet temperature of the pressurized water reactor is generally lower than 330 degrees Celsius), only low-pressure (5.0-8.0MPa) saturated steam or slightly superheated (20-30 degrees Celsius) steam can be produced , the ideal specific enthalpy drop of the whole machine is very small, and the steam humidity is high. In order to increase the power of a single machine, the steam flow rate must be large. At present, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01K27/00F03G6/06F01D15/10
CPCF01D15/10F01K27/00F03G6/06Y02E10/46
Inventor 刘义达祁金胜杨俊波李官鹏
Owner SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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