Methane concentration technology – biogas

Technical Overview

The PSA (Pressure Swing Adsorption) biogas upgrading technology uses specially selected adsorbents to separate impurities such as carbon dioxide (CO₂) and nitrogen (N₂) from biogas while retaining methane (CH₄). Through this adsorption and regeneration process, the methane content is significantly increased to achieve natural gas-grade biogas upgrading.

Before entering the PSA purification unit, raw biogas undergoes pretreatment processes including moisture removal through a liquid separator and hydrogen sulfide (H₂S) removal through a desulfurization tower. After purification, the gas is processed in the PSA system to produce high-quality upgraded natural gas.

System Capacity: 200–5000 Nm³/h

Key Technical Features

High Methane Recovery and Adjustable Product Purity
The system can achieve high-purity upgraded gas output, with product quality adjustable according to different application requirements.

Automated Operation and Control
The PSA unit features a high level of automation, enabling stable operation, simplified management, and reduced manual intervention.

Skid-Mounted Modular Structure
The compact skid-mounted design integrates major process components into a standardized module, reducing installation complexity and improving project deployment efficiency.

Application

Biogas Purification and Upgrading

The PSA biogas upgrading system is designed for converting raw biogas into high-quality natural gas by removing CO₂, H₂S, moisture, and other impurities. It is suitable for industrial biogas purification projects requiring efficient methane enrichment and reliable gas quality control.

Process Diagram

Methane Concentration Technology – Biogas

Typical Performance