# US 9,518,226 B2 · Solids removal from bio-oil using biomass filter aid

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,518,226 B2
- Document ID: US9518226B2
- Status: Granted
- Kind: B2
- Application number: 14/580,971
- Filed: 2014-12-23
- Published: 2015-04-23
- Granted: 2016-12-13
- Earliest claimed: 2010-07-13
- Assignees: Inaeris Technologies, LLC
- Applicants: KiOR, Inc.
- Inventors: Ronny W. Lin
- Web page: https://patentgrep.com/patent/US9518226B2

## CPC

- C10B 53/02: of cellulose-containing material (production of pyroligneous acid C10C5/00)
- C10B 49/22: according to the "fluidised bed" technique
- C10C 5/00: Production of pyroligneous acid {distillation of wood, dry distillation of organic waste}(carbonisation of wood C10B)
- C10K 1/04: by cooling to condense non-gaseous materials {(C10K1/001 takes precedence)}
- Y02E 50/10: Biofuels, e.g. bio-diesel
- Y02P 20/145: the feedstock being materials of biological origin
- C10B: DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS (cracking oils C10G; underground gasification of minerals E21B43/295)
- C10C: WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID (compositions of bituminous materials C08L95/00; carbon filaments by decomposition of organic filaments D01F9/14)
- C10K: PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A green process and system are disclosed for utilizing a biomass filter aid in the filtration of a bio-oil. The process comprises filtering a bio-oil containing residual solids from a conversion reaction in the presence of the biomass filter aid to produce a filtered bio-oil. The biomass filter aid facilitates efficient removal of residual solids from the bio-oil. The spent biomass filter aid containing the residual solids may be recycled as a conversion feedstock or used as a combustion heat source in the biomass conversion system.

## Claims

### Claim 1

A biomass conversion system comprising:
a biomass feedstock source for providing solid particulate biomass;
a splitter coupled to said biomass feedstock source and operable to split said solid particulate biomass into a biomass feedstock fraction and a biomass filter aid fraction;
a conversion reactor for thermally converting said biomass feedstock fraction into an initial conversion product;
a residual solids separator for removing residual solids from at least a portion of said initial conversion product, wherein said residual solids separator comprises a porous filter element comprising an inlet side and an outlet side, wherein said inlet side is capable of retaining and supporting said biomass filter aid fraction thereon;
a biomass feed system for transporting said biomass feedstock fraction from said splitter to said conversion reactor; and
a biomass filter aid transport mechanism for transporting said biomass filter aid from said splitter to said residual solids separator.

### Claim 2 (depends on 1)

The system of claim 1, further comprising a spent solids transport system for transporting spent solids comprising the removed residual solids and said biomass filter aid fraction away from said residual solids separator.

### Claim 3 (depends on 2)

The system of claim 2, wherein said spent solids transport system transports said spent solids from said residual solids separator to said conversion reactor and/or to said biomass feed system.

### Claim 4 (depends on 1)

The system of claim 1, wherein said conversion reactor is a riser reactor, wherein said residual solids separator is a centrifuge, a rotary filter, a plate filter, or a bag filter.

### Claim 5 (depends on 1)

The system of claim 1, further comprising a primary solids separator coupled between said conversion reactor and said residual solids separator and operable to remove solids larger than said residual solids from said initial conversion product.

### Claim 6 (depends on 1)

The system of claim 1, further comprising a condenser coupled between said conversion reactor and said residual solids separator and operable to condense at least a portion of said initial conversion product.

### Claim 7 (depends on 1)

The system of claim 1, wherein said residual solids separator is a centrifuge.

### Claim 8 (depends on 1)

The system of claim 1, wherein said residual solids separator is a rotary filter.

### Claim 9 (depends on 1)

The system of claim 1, wherein said residual solids separator is a plate filter.

### Claim 10 (depends on 1)

The system of claim 1, wherein said residual solids separator is a bag filter.

### Claim 11 (depends on 1)

The system of claim 1, wherein said conversion reactor comprises a riser reactor.

### Claim 12 (depends on 5)

The system of claim 5, wherein said primary solids separator comprises a gas filter.

### Claim 13 (depends on 5)

The system of claim 5, further comprising a condenser coupled between said conversion reactor and said primary solids separator and operable to condense at least a portion of said initial conversion product into a condensed product, wherein said residual solids separator is configured to filter said condensed product.