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A system and process for storing electrical energy

A technology for storing electrical energy and technology, applied in the field of electrical energy storage systems, can solve problems such as difficult wind, difficult storage and grid connection, and achieve the effects of improving energy storage efficiency, alleviating supply and demand, and solving large-scale storage problems.

Active Publication Date: 2019-04-12
SINOPEC ENG +1
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  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to provide a system and process for storing electric energy, which can solve the problem of large-scale storage of electric energy generated by wind and solar energy and other excess electric energy that are difficult to store and grid-connected, and at the same time solve the problem of exhaust gas from industrial enterprises. The processing of resources and the integration and recycling of resources

Method used

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  • A system and process for storing electrical energy
  • A system and process for storing electrical energy

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Embodiment 1

[0059] Such as figure 1 As shown, M=3.0 containing CO 2 , CO industrial tail gas, after dedusting and purification treatment, is pressurized and sent to 1# raw material heater 20 through carbon oxide gas compressor 36, and the purified gas after preheating passes through hydrolysis reactor 32, fine desulfurization reactor 31, deoxidation, After the denitrification reactor 30, the obtained purified gas has a sulfur content of 65ppb, a nitrogen content of 150ppm, and an oxygen content of 270ppm.

[0060] The wind power that is difficult to store and grid-connected is rectified by the AC / DC rectifier 41 and introduced into the manganese salt solution electrolytic cell 21 . The manganese salt solution electrolytic cell 21 obtains metal manganese, and the precipitated metallic manganese reacts with dilute sulfuric acid in the manganese dilute acid reaction device 42 to generate a large amount of hydrogen and manganese salt solution, and the manganese salt solution returns to the e...

Embodiment 2

[0069] Such as figure 2 As shown, embodiment 2 is basically the same as embodiment 1, and the difference is: 1) use four radial bed reactors with diversion cone heat transfer instead of heat pipe reactor; 2) 1# methanation reactor outlet is set Steam superheater 26; 3) Medium pressure waste boiler 25 and medium pressure waste boiler 37 are installed at the outlets of 2# and 3# methanation reactors respectively; 4) 3# and 4# methanation reactors are connected in series. The specific process is as follows:

[0070] The electric energy generated by wind power and solar energy, which is difficult to store and grid-connected, is rectified by the AC / DC rectifier 41 and then introduced into the manganese salt solution electrolytic cell 21 . The manganese salt solution electrolytic cell 21 obtains metal manganese, and the precipitated metallic manganese reacts with dilute sulfuric acid in the manganese dilute acid reaction device 42 to generate a large amount of hydrogen and mangane...

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Abstract

The invention discloses a system and a technology for storing electric energy based on a methanation reaction. The system and the technology both comprise a carbon-oxygen-containing compound purifying system, a gas making system, a methanation system, a steam heat-taking system of the methanation system, and a product separation system. Compared with the prior art, by adoption of the system and the technology provided by the invention, the large-scale storage of the electric energy which is generated by wind energy and solar energy, is difficult to store and has grid-connected difficulty, and other surplus electric energy is realized; and meanwhile, the treatment of industrial and enterprise exhaust gases, and comprehensive and cyclic utilization of resources are realized.

Description

technical field [0001] The present invention relates to a system and process for storing electrical energy. Background technique [0002] At present, more than 70% of carbon emissions come from coal combustion, and then come from oil, natural gas, cement and other industries in descending order. This not only brings about the global greenhouse effect and frequent occurrence of extreme weather, but also wastes a lot of energy. resource. In addition, due to the bottleneck of access to the Internet, my country's wind power and solar energy seriously restrict the development of wind power and solar energy industries. A large loss of electric energy and loss of equipment and line network in the long term. The increasingly serious environmental problems caused by carbon emissions, the recycling of resources, and the improvement of energy efficiency have prompted people to seek solutions to these problems. [0003] According to incomplete statistics, my country's current cumulati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J15/00
CPCY02E70/30Y02P90/50
Inventor 张旭戴文松王子宗蒋荣兴
Owner SINOPEC ENG
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