Biogas Upgrader

Basics

• A Device that "Upgrades" Biogas to the same quality and roughly the same standards as Natural Gas, thus allowing it to be used with the existing infastructure such as CNG
• May reduce damage caused by H2S if present in the biogas\
• This could also produce dilute sulphuric acid

Existing Open Source Designs

• This Wet Scrubber + Electostatic Precipitator Combo

Minimum Viable Product

• Modular
• Removes H2S and CO2
• Has a low pressure out feed with quick disconnects to connect to other devices such as a Natural Gas Compressor

Design Research

• From Wikipedia:

Water washing The most prevalent method is water washing whereby high pressure gas flows into a column in which the carbon dioxide and other trace elements are scrubbed by cascading water running counter-flow to the gas. This arrangement can deliver 98% methane with manufacturers guaranteeing maximum 2% methane loss in the system. It takes roughly between 3% and 6% of the total energy output in gas to run a biogas upgrading system

So essentially a simple wet scrubber

See Also

• CNG

Useful Links

• The Wikipedia page on Biogas Upgraders