Sandwich gasification process for high-efficiency conversion of carbonaceous fuels to clean syngas with zero residual carbon discharge

Patent · Tue Jul 18 04:00:00 EDT 2023

OSTI ID:2221981

Patel, Nikhil Manubhai

gasifier and a gasification process provides a long, uniform temperature zone in the gasifier, regardless of the particle size, chemical composition, and moisture content of the fuel by sandwiching a reduction zones between two oxidation zones. The gasifier and gasification process produces a char that is more energy-dense and almost devoid of moisture, affording an additional (char) oxidation zone with a temperature that is higher than a first oxidation zone which is closer to an evaporation and devolatilization zone. As such, the additional (char) oxidation zone contributes to augmenting the reduction zone temperature, providing a favorable dual impact in improving syngas composition and near-complete conversion of the tar.

• Research Organization: US Dept. of Energy (USDOE), Washington, DC (United States); US Army Research Office (ARO)
• Sponsoring Organization: USDOE
• DOE Contract Number: FC26-05NT42465
• Assignee: Patel, Nikhil Manubhai, Grand Forks, ND (United States)
• Patent Number(s): 11,702,604
• Application Number: 17/570,448
• OSTI ID: 2221981
• Country of Publication: United States
• Language: English