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A device and method for using molten salt energy storage for distributed energy utilization

A technology of distributed energy and molten salt, which is applied in steam generation methods using heat carriers, energy storage, adsorption machines, etc., can solve the problems of natural gas air pollutants, difficult promotion, site restrictions, etc., and achieve comprehensive utilization of energy High efficiency, absorbing wind power abandonment, and reducing emissions

Active Publication Date: 2020-05-19
深圳众合零碳储能技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a device for utilizing molten salt energy storage for distributed energy, which overcomes the existing air pollution in the prior art when using natural gas for distributed energy, and The existing molten salt energy storage is limited by the site, it is difficult to promote, and the cost is high.

Method used

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  • A device and method for using molten salt energy storage for distributed energy utilization
  • A device and method for using molten salt energy storage for distributed energy utilization

Examples

Experimental program
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Effect test

Embodiment 1

[0057] Such as figure 1 In the shown device, the steam generator 2 is a vertical shell-and-tube heat exchanger, and there are two molten salt heat storage tanks 1, and each molten salt heat storage tank 1 is equipped with three electric heaters 11, which are annular along the inner wall Evenly distributed in the molten salt heat storage tank 1.

[0058] When the device is used for distributed energy utilization of molten salt energy storage, electric signal processing equipment is used to convert the discarded electricity or off-peak electricity, and the electric heater 11 is used to electrically heat the molten salt in the molten salt heat storage tank 1 to 550°C, wherein the amount of molten salt in the molten salt heat storage tank 1 is guaranteed to have a safety height of 0.5 meters above the tank, and the molten salt is sodium nitrate;

[0059] Then, open the third valve to allow the cooling water to flow into the vertical shell-and-tube heat exchanger;

[0060] Open t...

Embodiment 2

[0064] The specific method is the same as in Example 1. The difference from Example 1 is that the device used in this example: there are 3 molten salt heat storage tanks 1, and 6 electric heaters 11 are provided in each molten salt heat storage tank 1. , distributed evenly in a ring shape along the inner wall in the molten salt heat storage tank. The molten salt in the molten salt heat storage tank 1 is electrically heated to 600°C.

[0065] In this embodiment, the efficiency of the electric heating energy storage part is 97.1%, the energy utilization rate of the heat output to the combined cooling, heating and power supply part is 81%, and the comprehensive energy utilization rate can reach 71.9%.

Embodiment 3

[0067] The specific method is the same as in Example 1. The difference from Example 1 is that the device used in this example: one molten salt heat storage tank 1, each molten salt heat storage tank 1 is provided with 6 electric heaters 11 , distributed uniformly in a ring shape along the inner wall in the molten salt heat storage tank 1 . The molten salt in the molten salt heat storage tank 1 is electrically heated to 650°C.

[0068] In this embodiment, the efficiency of the electric heating energy storage part is 97.5%, the energy utilization rate of the heat output to the combined cooling, heating and power supply part is 83%, and the comprehensive energy utilization rate can reach 72.5%.

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Abstract

The invention discloses a device and method for performing distributed energy utilization on molten salt stored energy and belongs to the technical field of photo-thermal power generation. The device comprises molten salt heat storage tanks and a steam generator, and the molten salt heat storage tanks are internally provided with electric heaters, drainage pipes and molten salt pumps; the steam generator is provided with a heat source inlet, a heat source outlet, a cooling water inlet and a stream outlet; the electric heaters are connected with electric signal processing equipment through wires; the drainage pipes are connected with the heat source outlet through first pipes, and the molten salt pumps are connected with the heat source inlet through second pipes; the cooling water inlet is connected with a water source through a third pipe; and the steam outlet is connected with a steam turbine, a steam converter, a heating heat supply network and a lithium bromide unit correspondingly through fourth pipes. By means of the device, renewable resources can be effectively utilized, the energy comprehensive utilization rate is high, the occupied area is small, the cost is low, emission of various pollutants is reduced, and good economic and social benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of photothermal power generation, and in particular relates to a device and method for utilizing molten salt energy storage for distributed energy utilization. Background technique [0002] Recently, the National Development and Reform Commission, the National Energy Administration, the Ministry of Finance, the Ministry of Environmental Protection, the Ministry of Housing and Urban-Rural Development, the Ministry of Industry and Information Technology, the Ministry of Transport, and the Civil Aviation Administration jointly issued the "Guiding Opinions on Promoting Electric Energy Substitution" (NDRC Energy [2016] No. 1054) (hereinafter referred to as the "Opinions"). The "Opinions" put forward guiding opinions from four aspects: the significance of promoting electric energy substitution, general requirements, key tasks and safeguard measures, providing a policy basis for comprehensively promoting electric e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B15/06F22B1/06F28D20/00F01D25/00
CPCF01D25/00F22B1/06F25B15/06F28D20/0034F28D2020/0047Y02B30/625Y02E60/14Y02E70/30
Inventor 熊兴才刘星
Owner 深圳众合零碳储能技术有限公司
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