Application Direction and Prospect of Power To Gas in Methanation Process

Abstract

The former comprises of a hydrogen comprehensive usage system, a 10MW electrolytic water hydrogen production system, and a 200MW wind farm. 17.52 million Nm3 of hydrogen may be produced annually by the project, some of which is used for industrial production to cut down on the use of fossil fuels in the industrial hydrogen production sector. A portion of it will be delivered to the hydrogen refueling station that supports the hydrogen-powered vehicle industry. The later wind farm, solar power plant, and electrolytic water hydrogen production system have respective capacities of 106 MW, 2 MW, and 4 MW. The hydrogen produced will be sent to the hydrogen refueling station via the pipeline network for use in fuel cell buses. This technology has low cost of large-scale transportation and is of great significance to mitigate CO2. Power-to-gas provides a new technical approach for fully utilizing renewable energy and improving natural gas supply capacity, with important engineering application value. This paper also describes the Power-to-gas energy storage technology. A variety of hydrocarbon fuels can be prepared by CO2 hydrogenation reaction, among which the catalyst technology for CO2 hydrogenation to methane is relatively mature, thus making the electricity-to-methane energy storage technology a practical potential electricity-to-hydrocarbon fuel energy storage technology. This paper comprehensively analyses the development status of the involved key technologies, including water electrolysis and CO2 methanation.