SANDWICH GASIFICATION PROCESS FOR HIGH-EFFICIENCY CONVERSION OF CARBONACEOUS FUELS TO CLEAN SYNGAS WITH ZERO RESIDUAL CARBON DISCHARGE
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United States of America
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May 5, 2022
app pub date -
Jan 7, 2022
filing date -
Jan 7, 2022
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Abstract
The present invention discloses a gasifier and/or a gasification process that 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/or gasification process has a char that is more energy-dense and almost devoid of moisture that affords for an additional (or 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 (or char) oxidation zone contributes to augmenting the reduction zone temperature, thereby providing a favorable dual impact in improving syngas composition and near-complete conversion of the tar.
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