CBG Plants

CBG Plants

A Compressed BioGas (CBG) plant is a facility that converts organic waste materials into a renewable energy source known as Compressed BioGas. The primary process involves anaerobic digestion, where microorganisms break down biodegradable feedstock, such as agricultural residue, kitchen waste, and sewage, in an oxygen-free environment to produce biogas

The process of Converting Feedstock to CBG can be divided into the following steps:

• 1.Pre-treatment: The feedstock may need to undergo pre-treatment to optimize the anaerobic digestion process. This can involve shredding, chopping, or homogenizing the waste to reduce particle size and improve digestion efficiency.
• 2.Anaerobic digestion: The shredded feedstock is fed into an anaerobic digester, which is a sealed chamber where bacteria break down the organic matter in the absence of oxygen. This process produces biogas, which is a mixture of methane, carbon dioxide, and other gases.
• 3.Biogas purification: The biogas from the anaerobic digester is then purified to remove impurities, such as hydrogen sulfide, water vapor, and carbon dioxide. This can be done using a variety of methods, such as pressure swing adsorption (PSA) & Vacuum Swing Adsorption (VSA), Membrane Separation and Chemical scrubbing - Monoethylammine (MEA) system.
• 4.Biogas compression & Utilization: The purified biogas is then compressed using a compressor. This produces CBG, which has a similar calorific value and other properties to compressed natural gas (CNG). CBG can be used in various applications, including as a fuel for vehicles, power generation, heating, and cooking.