A method of energy conversion and storage based on electricity-to-gas technology

Abstract

The invention discloses an energy conversion and storage method based on an electricity-to-gas technique and belongs to the field of clean energy sources. The method comprises the following steps: capturing carbon dioxide gas emitted by a power plant and natural gas terminal users; electrolyzing water by using wasted residual electric energy to generate hydrogen and oxygen; carrying out a reactionon carbon dioxide and hydrogen to generate natural gas which is provided to the natural gas terminal users; and finally, carrying out flow analysis and economical analysis on the electricity-to-gas technique. The method can achieve reversible conversion processes from electricity to gas and from gas to electricity, so that part of problems of abandoning wind and light in the field of clean energysources is solved, and meanwhile, the problem that a natural gas source is in short severely is solved, and conversion and economical utilization of different energy source forms are achieved. Meanwhile, fuel gas replaces a current conventional water storage power station, electric energy is converted in low ebb into fuel gas to be stored, and in an electricity consumption peak, a combustion gasturbine generates electricity directly to play a peak regulating role to a power grid, so that the method plays a great role in stable and safe operation of a large power grid.

Description

technical field [0001] The invention belongs to the technical field of clean energy, and relates to energy form conversion and energy storage technology. Specifically, it refers to a technology that converts electrical energy into natural gas to facilitate storage, transportation and reuse. At the same time, this technology also has the functions of power system peak regulation, reduction of carbon dioxide emissions, by-production of oxygen, hydrogen and other energy products. Background technique [0002] At present, the consumption of natural gas in my country is increasing year by year, and the source of gas fluctuates violently with different seasons! How to obtain a relatively stable gas source supply is an urgent problem before us. Another energy source in stark contrast to the relative shortage of gas sources—electricity supply is relatively surplus. Due to the price formation mechanism, grid access policy, and long-term and short-term benefit issues, my country's ...

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Problems solved by technology

[0014] In order to solve the problem of abandoning wind and solar energy under the existing technical conditions and facing a severe shortage of natural gas, the present invention provides an energy conversion and storage method based on electricity-to-gas technology, which not only realizes the use of gas to generate electricity (gas turbine), Moreover, it is necessary to realize the reverse electric (combustion) gas

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