Processes for producing fuels and biofertilizers from biomass and products produced
USRE48308E1 · kind E1 · reissue
Assignees
Inventors
Key dates
| Filing date | Dec 15, 2019 |
| Grant date | Nov 17, 2020 |
| Priority date | — |
| Expiry date | Dec 15, 2039 |
Classification
- Technology area (CPC —)General
Abstract
An IBTL system having a low GHG footprint for converting biomass to liquid fuels in which a biomass feed is converted to liquids by direct liquefaction and the liquids are upgraded to produce premium fuels. Biomass residues from the direct liquefaction, and optionally additional biomass is pyrolyzed using microwave pyrolysis to produce structured biochar, hydrogen for the liquefaction and upgrading, and CO2 for conversion to algae, including blue green algae (cyanobacteria) in a photobioreactor (PBR). Produced algae and diazotrophic microorganisms are used to produce a biofertilizer that also contains structured biochar. The structured biochar acts as a nucleation agent for the algae in the PBR, as a absorption agent to absorb inorganics from the biomass feed to direct liquefaction or from the liquids produced thereby, and as a water retention agent in the biofertilizer. The ratio of cyanobacteria to diazotrophic microorganisms in the biofertilizer can be selected so as to achieve desired total chemically active carbon and nitrogen contents in the soil for a given crop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.