Oxy-Steam Fluidized Bed Gasifiers

From biomass and waste to synthetic fuels and chemicals

Oxy-Steam Fluidized Bed Gasifiers

Oxy-steam Gasification is a process that converts traditional fuels such as biomass,
municipal and industrial waste into valuable syngas. This technology uses a mixture
of oxygen and steam, instead of air, as the gasifying agent. By replacing air with a
mixture of oxygen and steam, the resulting gas is free from nitrogen, making it suitable
for other applications than combustion.

In this case, the syngas’ main components are hydrogen and carbon monoxide, the basic “building blocks” of many valuable chemicals and fuels, such as methanol, diesel and jet fuel. Thus, the oxy-steam gasification technology can unlock the value of waste streams by turning these into energy or feedstock for biorefineries, replacing transport fuels, reducing CO2 emissions and promoting circularity.

NSE Biofuels


1. The most fuel-flexible gasification technology in the market

Unlike other gasification technologies, SFW fluidized bed (FB) gasifiers can utilize a wide range of fuels, including waste streams such as refuse-derived fuels (RDF/REF), demolition wood, forest residues, sludge, and other non-recyclable waste.

2. Superior fluidized bed technology for high efficiency

While other technologies use high temperatures and short residence times, SFW’s gasifiers take advantage of vigorous mixing and long particle residence times to efficiently gasify even the lower quality fuels. Another benefit of low-temperature fluid bed gasification technology is that the residual ash never melts, allowing the use of feedstocks considered too corrosive for other gasifiers.

3. Production of carbon-neutral chemicals and fuels

Since 2010, SFW has demonstrated the oxy-steam gasification, combined with and syngas cleaning system, for wood-based biomass type of feedstocks on a 12 MWth scale. The system produces ultra-clean syngas that can be used in the production of renewable diesel from biomass. The oxy-steam gasification technology can also be applied to convert waste to fuels and chemicals.