Biogas H2S Removal Skids: The First Step in Every CBG Plant

7 hours ago

2 min read

At a glance. Raw biogas carries hydrogen sulphide (H2S), which corrodes compressors and pipework and damages upgrading membranes and engines. The Tech Inc. Biogas H2S Removal Skid removes it at the start of the gas train in two adsorber vessels that run lead/lag. For compressed biogas (CBG) and biogas-to-power plants, it is one of the best investments they can make.

How it works

A knock-out pot removes condensate from the raw gas.
A blower raises the gas pressure where needed.
Two adsorber vessels with iron-oxide or impregnated activated-carbon media remove H2S.
A valve manifold runs the vessels lead/lag, so one can be recharged while the other runs.
An H2S analyser checks the outlet gas.

Versions

Version	Use
Iron-oxide skid	High H2S levels at low running cost
Activated-carbon skid	Polishing to low H2S levels
Two-stage skid	Bulk removal followed by polishing
With online analyser	Continuous outlet monitoring

Why it is one of the best things to happen to a CBG plant

Protected equipment. Upgrading membranes, compressors and engines stay free of H2S damage.
No shutdown for recharges. Lead/lag vessels keep the plant running.
Longer media life. Media chosen for the actual H2S load.
Fits the train. Sized for the biogas upgrading and CBG gas train that follows it.

Where it is used

CBG plants, biogas-to-power plants, landfill gas and digester gas. Plants that must prove gas quality also use our CBG compliance and performance kit.