Biogas Upgrading and Gas Processing - Frequently Asked Questions

Biogas Upgrading and Gas Processing - Frequently Asked Questions

What biogas upgrading technologies does Panhua offer?

Panhua offers three biogas upgrading routes - membrane separation, pressure swing adsorption (PSA) and water scrubbing - selected according to raw gas flow rate, gas composition and target purity. Membrane separation is the most widely used route in our biogas projects, and our membrane modules are developed in house.

What methane purity and recovery can your systems achieve?

Our biogas upgrading systems deliver biomethane with CH4 purity of 97% or higher and methane recovery of 97% or higher, meeting pipeline injection and vehicle fuel (bio-CNG) specifications. Nitrogen content can be controlled to below 1% where required.

Can Panhua supply a complete turnkey plant, or only single equipment?

Both. We supply the complete process package - process design, core equipment, piping and control, installation, commissioning and operator training - as a turnkey project. Individual units such as gas compressors, membrane skids, PSA units, dryers and nitrogen generators can also be supplied separately.

What information do you need to prepare a quotation?

Raw gas flow rate (Nm3/h or Nm3/d), raw gas composition (CH4, CO2, H2S, O2, N2), required product purity and pressure, site conditions (ambient temperature, altitude, power supply) and project schedule. With this information we normally return a process scheme and quotation within 3 working days.

What about capacity expansion after startup?

Our biogas upgrading plants use a 2+1 expansion design: a 20,000 Nm3/d plant can be upgraded to 30,000 Nm3/d without replacing the main skid or rebuilding the site, which keeps future investment low.

What after-sales support is provided?

We provide remote diagnostics, spare parts supply, on-site service and performance guarantees. Projects are covered by defined performance indicators such as methane purity, recovery rate and unit power consumption. Reference installations include biogas upgrading plants and gas processing systems delivered in China, Ethiopia, Indonesia and other markets.