Abstract:With carbon dioxide emissions from various countries, greenhouse gases are surging and China has proposed carbon peaking and carbon neutral targets. The utilization of new energy sources is the most effective way to solve environmental and energy problems and reduce carbon emissions. Hydrogen energy is an important direction for future energy development. A cogeneration system of electricity and methanol based on electrolytic water for hydrogen production and biomass power plant are proposed, which produces hydrogen and oxygen by electrolytic water technology.Oxygen is used in biomass oxygen-rich combustion power plant for electricity generation.The carbon dioxide rich tail gas produced by the power plant is used to synthesize methanol with hydrogen, and the results of simulation calculation of the system using Aspen show that the system produces The results of simulations using Aspen show that the system produces 26674 tons of methanol per year with a combined energy efficiency of 51.98%, a hydrogen to methanol conversion efficiency of 59.84%, and a dynamic payback period of 3.47 years. This system has achieved near-zero carbon emission while producing electricity and methanol, can provides a certain reference for the development of hydrogen energy utilization technology in China.