In partnership with Western Research Institute (WRI) and incorporating a design from the Gas Technology Institute (GTI) CleanCarbon Energy has developed the patent pending Downhole Flexfuel Gasifier to enable economic gasification of wet coal and biomass.
A well 2000-3000m deep is drilled and completed in a manner that a biomass or coal slurry is injected to supercritical conditions. Supercritical water gasification can convert biomass and coal to hydrogen-rich gaseous product efficiently and cleanly. The produced syngas is produced to surface.
-Water shift reaction results in a hydrogen rich syngas
-Must inject wet as a slurry; no need to dewater.
-Use of downhole wells reduces surface footprint, CAPEX and OPEX
-Can handle low grade coals and biomass blend ready
-Greater value add opportunity (detailed later); carbon conversion ready
-Potential for ash to be used as carbon fiber precursor
C + H₂O → CO + H₂ ΔH= 132kJ/mol
CO + H₂O → CO₂+ H₂ ΔH= -41kJ/mol
CO + 3H₂ → CH₄ + H₂O ΔH= -206kJ/mol