The project aims to explore the application mode of distributed biogas energy supply centered on biogas projects and the research and development of related integrated equipment. The main contents include:    1. Integrated biogas cogeneration technology and equipment research. Research and develop biogas boiler equipment, adopt the dual air supply combustion method of primary air and secondary air, seek the best matching relationship between gas and air mixed combustion, and solve the problems of insufficient combustion, instability, and low heat generation of existing biogas boilers; Research the flue gas condensation technology, recover the heat in the flue gas, reduce waste heat pollution emissions, and increase the thermal efficiency of the boiler; research the mobile heating and gas supply integration equipment, adopt the mobile biogas station mode, and integrate the heating and gas supply equipment into the mobile biogas In the station, it is convenient to provide clean energy for long-distance and scattered northern rural areas.    2. Research on unattended automatic control technology in the whole process. Research and develop the biogas boiler automatic control system, the main functions include automatic gas supply, automatic water addition, automatic ignition, automatic temperature adjustment, automatic shutdown and other functions; design online monitoring and early warning functions, real-time monitoring and recording of the biogas boiler operating status and logical reasoning calculations , When there are trends such as over-temperature, over-pressure, water shortage, leak detection, flameout, etc., it can give early warning so that operators can deal with the accident in time to ensure the safe and stable operation of the system; use WLAN and Zigbee communication technology to set data wireless transmission system is used to establish a data base station to uniformly send the room temperature conditions of the farmers after heating and the operation and fault information of the cooking gas system to the control terminal to realize decentralized feedback and centralized control.    3. Research on the distributed clean energy supply mode of biogas based on biogas engineering. Explore the promotion model of distributed biogas energy supply centered on biogas projects, and explore the applicability evaluation of distributed biogas energy supply with long-distance, decentralized small and medium-sized natural villages as the basic unit.