Lishui Jinyun Water-Light Hydrogen Biomass Near-Zero Carbon Demonstration Project
Thread Content
On October 31, 2022, the **near-zero carbon demonstration project integrating electricity, solar energy, hydrogen, and biomass in Jinyun, Lishui, Zhejiang was put into operation. This project is a demonstration project with rural areas as its typical application scenario. The project carries out demonstration studies including water (photovoltaic) electrolysis for hydrogen production, biomass gas generation, and hydrodesulfurization of biogas. It uses excess hydropower and rooftop photovoltaic power as energy sources to produce hydrogen through electrolysis techniques, and through flexible hydrogen storage methods, it ultimately achieves the local utilization of excess hydropower and photovoltaic energy as well as the recycling of rural waste. The project creatively utilizes green hydrogen to purify biogas, establishing an integrated energy utilization system that combines various green energy sources such as green electricity, green hydrogen, and biomass. Once operational, the project is expected to produce 20,000 standard cubic meters of biogas per year, sufficient to meet the energy needs of 100 rural households for one year ； 180,000 standard cubic meters of hydrogen can be produced each year.
This scenario is one of the key scenarios in the Lishui Comprehensive Demonstration Project for a zero-carbon energy internet across the entire region; it is also one of the first four \"green hydrogen\" projects undertaken by the Power Grid Company. The Lishui Jinyun Water-Gas-Hydrogen Biomass Near-Zero Carbon Demonstration Project utilizes proton exchange membrane technology to produce pollution-free, zero-emission \"green hydrogen\" from small-scale hydropower resources and distributed photovoltaic systems. The plant uses part of the hydrogen to meet the demands for hydrogen in transportation and industry, while utilizing another portion of hydrogen to capture carbon dioxide from biogas, thereby increasing the proportion of methane in the biogas and turning it into bionatural gas. This bionatural gas is then supplied to nearby customers to meet their needs for efficient and clean energy in rural areas. “In biogas produced by biomass fermentation in the past, methane accounted for only about 55%, with the remainder being primarily carbon dioxide. The project utilizes the country’s first biogas hydrogenation methanization unit, which allows hydrogen to react with carbon dioxide in biogas to produce methane, thereby increasing the methane content in biogas to over 95%. ”The person in charge of the project once described the technical advantages of this project in these terms.