Jacobi Helps Make Green Electricity?
Biogas generation is a growing industry that focuses on converting biogas into electric power or heat, with a second option being feeding the gas into the grid. Independent of the application, the gas needs to be treated. Depending on the renewable source, the biogas can contain H₂S (hydrogen sulphide), siloxanes and/or terpenes.
Hydrogen sulphide needs to be removed as it has a negative effect on the engine oil, meaning it needs to be changed too frequently resulting in high maintenance cost. H₂S is burned to SO₂/SO₃ in the engine, so we can control the SO₂/SO₃ emissions the by removing the hydrogen sulfide before the combustion. Concentrations can also be too high for grid feeding. In general, a gas quality of >99% methane needs to be achieved to be able to feed to the grid.
Siloxanes will cause deposits on the turbine blades resulting in vibrations or even damage of the turbines, consequently causing extra costs and disturbing processes.
Terpenes are a large and diverse class of organic compounds, produced by a variety of plants, for example, citrus plants and conifers, that typically have a strong odour. Terpenes are removed from the biogas prior to the injection of the green gas into the grid because they can mask the typical odour of the THT (Tetrahydrothiophene). They can cause problems by reducing the lifetime of gaskets, leading to frequent maintenance which, in turn, has a negative impact on production revenue and continuity.
For optimal biogas treatment, the operational conditions need to be set properly. The Jacobi engineers in your local sales team are there to jointly develop and optimise the systems, resulting in improved revenue and reduced total cost of ownership (TCO).