Biogas is an ideal clean energy source with a wide range of applications, but different utilization methods have different requirements for the quality of biogas. The main utilization methods and quality requirements of biogas are as follows:
Combustion heating. This is a common form of biogas utilization in developing countries, such as the commonly used rural household biogas digesters in China, which are generally used to provide cooking and lighting fuel. The technology of rural household biogas digesters is simple, with small investment and quick results. Generally, biogas only needs to undergo simple desulfurization and dehydration treatment.
Biogas generator cogeneration. This is a commonly used biogas utilization method in large and medium-sized biogas projects. To avoid the adverse effects of impurities in biogas on the engine, biogas needs to be dehydrated and treated to remove impurities such as sulfides, halogenated hydrocarbons, and siloxanes.
Biogas fuel cells. The electricity efficiency of biogas power generation is generally lower than 35% and the unit investment is relatively high, while the electricity efficiency used for fuel cells can reach 40%~60%. The use of biogas in fuel cells requires the separation of CO2 and the removal of trace gases such as H2S, halogens, and CO.
After purification, biogas is used as pipeline natural gas and as car fuel. This utilization method requires high quality of biogas, which not only requires dehydration and removal of impurities, but also removes CO2 to obtain high-quality biomethane.
Biogas is used as a raw material for chemical production. It is used to produce hydrogen and carbon black, and can further be made into various chemical products such as acetylene, gasoline, alcohol, artificial fibers, and artificial leather.
Summary of Three Biogas Purification and Purification Processes
Biogas purification generally involves removing trace harmful components from biogas, such as biogas desulfurization and deoxygenation drying technology. Biogas purification is the removal of carbon dioxide from biogas to improve its applicability and calorific value. Bionatural gas obtained through purification usually contains 95% to 97% methane and 1% to 3% carbon dioxide, which can be used as a substitute for natural gas.
The exciting content of this article is provided by the knowledge of biogas desulfurization. There are also many exciting content on this website, and you can click to enter more content: We have dedicated customer service to answer your questions