Renewable natural gas production technology based on wind light biogas resources

Abstract

The invention discloses renewable natural gas production technology based on wind light biogas resources. The renewable natural gas production technology based on wind light biogas resources comprisesfollowing steps: 1, biogas from a biogas source is delivered through a biogas purifying device to remove impurities, and purified gas containing methane and carbon dioxide as the main components is obtained; 2, the purified gas is introduced into a biogas extraction purification device for separation, purified methane is introduced into a natural gas pipeline network, discharged carbon dioxide isintroduced into an electric gas preparation device, and at the same time, wind power generation and / or photovoltaic power generation is adopted to obtain electric power, and a water electrolysis device is provided with the electric power for water electrolysis, obtained hydrogen gas is introduced into the electric gas preparation device; and 3, in the electric gas preparation device, hydrogen gasand carbon dioxide are reacted at a certain temperature under a certain pressure, and generated methane is introduced into the natural gas pipeline network. The above structure is capable of realizing construction of a wind, light, biogas multi-energy complementary energy supply resource, renewable energy is adopted to prepare natural gas, the process is clean, and is friendly to the environment,power grid wind curtailment, light curtailment can be alleviated, and it is beneficial for wind and light intermittent new energy consumption.

Description

technical field [0001] The invention relates to a renewable natural gas production process based on multi-energy complementarity of wind-solar biogas resources. Background technique [0002] Natural gas, as a clean, environmentally friendly green energy, has been widely promoted and applied all over the world. The world's natural gas consumption accounts for 24.1% of primary energy, of which: 31.8% in North America, 46.2% in Central and South America, 32.3% in Europe, and 51.5% in the Middle East. %, Africa 28.2%, Asia-Pacific 11.7%. Compared with the world average level, my country's natural gas utilization is still at a relatively low level. The "Opinions on Accelerating the Promotion of Natural Gas Utilization" proposes: "Gradually cultivate natural gas as one of the main energy sources of my country's modern clean energy system. By 2030, strive to make natural gas The proportion in the primary energy consumption structure has increased to about 15%. In 2017, my country's...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a renewable natural gas production process based on wind, wind and biogas resources, adopting a gas-electric coupling energy supply system, focusing on the complementary characteristics of wind, light and other renewable energy, fuel energy and renewable energy, in order to solve the current problem. There is a lack of energy-side complementarity in existing technologies, which can meet the needs of gas-electricity complementarity and coordinated operation

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