Compressed Biogas Plant (CBG)

Transforming Organic Waste into Clean, Green Energy

A patented technology for Biogas generation and purification, Raj Process Equipments & Systems Pvt. Ltd. is one of the leading compressed biogas plant manufacturers in India, offering world-class turnkey solutions for CBG production. With decades of expertise and a proven track record, we deliver advanced technology and custom-engineered systems that convert organic waste into high-purity compressed biogas (CBG) — a sustainable and eco-friendly alternative fuel.

As India moves towards a clean energy future, Raj Process is at the forefront of supporting SATAT (Sustainable Alternative Towards Affordable Transportation) and GOBARdhan initiatives by designing and executing next-generation CBG plants across the country and abroad.

Biogas Generation

Raj Process, a leader in industrial gas purification and renewable energy solutions, has developed a patented CSTR-based biodigester with a unique combination of central and lateral agitation. This innovative design enhances biogas production and organic waste treatment, making it one of the most advanced systems for anaerobic digestion in the market.

What is a CSTR-Based Biodigester?

A CSTR (Continuous Stirred Tank Reactor) biodigester is an anaerobic digester used to process organic waste and produce biogas (mainly methane and carbon dioxide). It breaks down organic matter such as agricultural waste, food scraps, or sewage sludge in the absence of oxygen, producing valuable biogas and nutrient-rich digestate for fertilizer use.

Turnkey Compressed Biogas Plant Solutions

We provide end-to-end CBG plant solutions, covering:

• Plant Design & Engineering → Optimized for efficiency, safety, and sustainability
• High-Quality Equipment Manufacturing → Fabricated at our five advanced manufacturing facilities
• Biogas Upgradation Systems → Advanced technologies to achieve >96% methane purity
• Automation & Process Control → PLC-based integrated monitoring for safety and performance
• Installation, Commissioning & Training → Seamless plant execution with full operational support

How Raj Process CBG Plants Work

Our state-of-the-art CBG plants use biomethanation technology to convert organic feedstock into clean, high-purity compressed biogas.

1. Biogas Generation (Anaerobic Digestion)

• Utilizes a Continuous Stirred Tank Reactor (CSTR) configuration
• Operates under mesophilic conditions for stable and efficient digestion
• Converts press mud, distillery waste, cattle dung, agri-residues, and other organics into raw biogas

2. Biogas Cleaning & Upgradation

• Advanced absorber columns remove H₂S and CO₂
• Achieves >96% methane content, meeting MoPNG CBG quality norms
• Uses aerobic reactors, sulphur recovery units, and PLC-based controls
• Equipped with real-time gas analyzers and central gas holders to maintain consistent pressure

3. Compression & Bottling

• Upgraded biogas is compressed to 200 bar using energy-efficient compressors
• Stored and transported as Compressed Biogas (CBG) for fuel and industrial applications

Applications of Compressed Biogas

• Automotive fuel replacement → CBG can substitute CNG and LPG in vehicles
• Industrial heating and power → Used as a green alternative to fossil fuels
• Electricity generation → Via gas engines and turbines
• Thermal energy → For steam and hot water systems in process industries

Benefits of Raj Process CBG Plants

• Environmental Sustainability → Reduces greenhouse gas emissions and diverts organic waste from landfills
• Energy Security → Reduces dependency on imported fossil fuels
• Economical for Farmers & Industries → Converts press mud, agri-residues, and waste into valuable energy
• Compliance-Ready Designs → Aligned with SATAT and GOBARdhan government initiatives
• Future-Ready Solutions → Integrates seamlessly with ethanol plants, distilleries, and biomass complexes

Why Raj Process Leads as CBG Plant Manufacturers in India

• Turnkey Project Expertise → From design to commissioning
• Advanced Biogas Upgradation Systems → Achieving 96%+ methane recovery
• Five State-of-the-Art Manufacturing Units → Precision-built equipment for guaranteed performance
• Global Project Execution → Successful installations across India, Brazil, Africa, and Southeast Asia
• Sustainability-Driven Designs → Integrated solutions for Zero Liquid Discharge (ZLD) and resource optimization

Raj Process offers a variety of gas purification technologies. While biochemical scrubbing followed by chilled water scrubbing is one of the most advanced methods, we also provide alternative technologies such as Pressure Swing Adsorption (PSA), Vacuum Pressure Swing Adsorption (VPSA), and membrane-based systems for gas purification.