Back to results
US 8,940,129 B2Granted
Process for reducing one or more insoluble solids in a black liquor
AssigneeUop LLC
InventorsJohn Q. Chen, Mark B. Koch
Life of this patent
Estimating the term…
Abstract
One exemplary embodiment can be a process for reducing one or more insoluble solids in a black liquor. The process may include hydrothermal processing the black liquor to a temperature of about 250-less than about 300° C. for an effective time to reduce the one or more insoluble solids by more than about 40%, by weight, based on a weight of the one or more insoluble solids prior to hydrothermal processing.
Claims15
A process for converting lignin in a black liquor, comprising:
- hydrothermal processing the black liquor to a temperature of about 250- about 290° C., wherein the black liquor comprises about 5 to about 85%, by weight, one or more insoluble solids prior to hydrothermal processing, and wherein the one or more insoluble solids are reduced by more than about 40%, by weight, based on a weight of the one or more insoluble solids prior to hydrothermal processing,
- separating the hydrothermally processed black liquor into a liquid and an insoluble portion;
- recovering the liquid portion;
- and
- deoxygenating, dehydrogenating, and/or cracking the recovered liquid portion in the presence of a catalyst.
2 more elements
Dependencies are inferred from the claim text.