Patent · US Active

Methods and apparatus for producing activated carbon from biomass through carbonized ash intermediates

US11213801B2 · kind B2 · utility

0Cited by

99References

1Claims

0Family size

Assignee

Carbon Technology Holdings, LLC · US

Inventors

Daniel J. Despen · Minneapolis, US
James A. Mennell · Brighton, US
David Reamer · Oakdale, US

Key dates

Filing date	Sep 7, 2017
Grant date	Jan 4, 2022
Priority date	—
Expiry date	Dec 20, 2037

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/145
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Biomass combustion processes may be controlled to intentionally generate a carbon-containing ash, from which activated carbon is produced according to the methods disclosed. Some variations provide an economically attractive process for producing an activated carbon product, the process comprising combusting a carbon-containing feedstock to generate energy, combustion products, and ash, wherein the ash contains at least 10 wt % carbon; separating and recovering carbon contained in said ash; and further activating or treating the separated carbon, to generate an activated carbon product. Many process variations are disclosed, and uses for the activated carbon product are disclosed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.