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Energy storage system and method for preparing methanol by using methanol synthesis waste gas

A technology for synthesizing methanol and energy storage systems, which is applied in chemical instruments and methods, preparation of hydroxyl compounds, preparation of organic compounds, etc., can solve the problems of long-term storage, self-discharge loss, high investment cost, etc., to improve energy storage effect, Strong stability and high energy density

Pending Publication Date: 2022-04-01
XIAN THERMAL POWER RES INST CO LTD
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Problems solved by technology

In the prior art, the energy density of mechanical energy storage and electromagnetic energy storage is low, there is a certain self-discharge loss, it cannot be stored for a long time, and the investment cost is high, and the application occasions have certain limitations.

Method used

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  • Energy storage system and method for preparing methanol by using methanol synthesis waste gas

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Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0031] The present invention is an energy storage system that utilizes synthetic methanol waste gas to produce methanol, such as figure 1 As shown, it includes wind power generation device 1, electrolyzer 2, hydrogen storage tank 3, mixer 4, compressor 5, methanol reactor A 6, decarbonization tower 7, methanol reactor B 8, separation device 9, oxygen storage tank 10. Waste heat boiler 11, turbine 12, regenerator 13, precooler 14, carbon dioxide compressor 15.

[0032] like figure 1 As shown, the hydrogen outlet of the electrolytic cell 2 is connected with the inlet of the reaction end tube side of the methanol reactor A6, and the oxygen outlet of the electrolytic cell 2 is connected with the furnace side inlet of the waste heat boiler 11;

[0033] The input end of the decarburization tower ...

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Abstract

The invention provides an energy storage system and method for preparing methanol by using methanol synthesis waste gas. A hydrogen outlet of an electrolytic bath is communicated with a methanol reactor A, and an oxygen outlet of the electrolytic bath is communicated with a waste heat boiler; the input end of the decarburization tower is connected with methanol synthesis waste gas, the carbon dioxide output end is connected with the reaction end inlet of the methanol reactor A, the separated gas outlet of the separation device is connected with the methanol reactor B, and the methanol outlet outputs methanol; a purge gas conveying pipeline is arranged on a pipeline between a separated gas outlet of the separation device and an inlet of the methanol reactor B and is used for being connected with a furnace side inlet of the waste heat boiler; the methanol reactor A is communicated with a waste heat boiler, and the waste heat boiler is connected with a heat absorption end inlet of the methanol reactor A after acting through a turbine to form a circulating energy storage loop. Wind energy, waste gas generated in methanol synthesis and the like are converted into methanol, energy is stored in the chemical energy storage mode, the energy density is high, long-term storage can be achieved, and the application range is wide.

Description

technical field [0001] The invention belongs to the field of energy storage technology and the field of waste gas utilization, and in particular relates to an energy storage system and method for producing methanol by utilizing synthetic methanol waste gas. Background technique [0002] Wind energy has the characteristics of cleanness and inexhaustibility, but there is a problem of uneven time distribution. When wind energy is utilized, energy storage and other technologies are generally required. In the northwestern region and the eastern coast of my country, wind energy resources are abundant, but in order to use wind energy stably, it is necessary to perform peak regulation on thermal power units or battery energy storage. In the prior art, the energy density of mechanical energy storage and electromagnetic energy storage is low, there is a certain self-discharge loss, it cannot be stored for a long time, and the investment cost is high, and the application occasions have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C31/04C07C29/151C25B1/04
CPCY02P20/50Y02P20/129Y02P20/133
Inventor 张纯吴家荣赵锋张一帆李红智姚明宇
Owner XIAN THERMAL POWER RES INST CO LTD
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