# US 2014/0193326 A1 · Process for the gasification of wet biomass

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- Number: US 2014/0193326 A1
- Document ID: US20140193326A1
- Status: Published application
- Kind: A1
- Application number: 14/239,617
- Filed: 2012-08-20
- Published: 2014-07-10
- Earliest claimed: 2011-08-26
- Assignees: Gensos Holding B.V.
- Inventors: John Harinck; Klaas Gerrit Smit
- Web page: https://patentgrep.com/patent/US20140193326A1

## CPC

- C10B 49/10: according to the "fluidised bed" technique
- C01B 3/02: Production of hydrogen; Production of gaseous mixtures containing hydrogen
- C07C 1/22: by reduction
- C10J 3/78: High-pressure apparatus
- C10L 3/08: Production of synthetic natural gas
- C10L 9/086: {Hydrothermal carbonization}
- C10J 2300/0916: Biomass
- C10J 2300/0923: Sludge, e.g. from water treatment plant
- C10J 2300/0979: as supercritical steam
- C10J 2300/1884: with one stream being synthesis gas
- Y02E 50/10: Biofuels, e.g. bio-diesel
- Y02P 20/145: the feedstock being materials of biological origin
- Y02P 20/54: using solvents, e.g. supercritical solvents or ionic liquids
- C10B: DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS (cracking oils C10G; underground gasification of minerals E21B43/295)
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C10J: PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES (synthesis gas from liquid or gaseous hydrocarbons C01B; underground gasification of minerals E21B43/295); CARBURETTING AIR OR OTHER GASES
- C10L: FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
- 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 process for the gasification of wet biomass comprises feeding the wet biomass at a temperature of at most 370 C. and a pressure of at least 22.1 MPa (absolute) to a reactor. The reactor comprises a bed of solid particles suspended in a fluid. The temperature of the feed is increased in the presence of the bed of suspended solid particles to a temperature of at least 375° C., forming supercritical water and converting in the presence of the supercritical water at least a portion of the organic materials present in the wet biomass into fluid gasification product.

## Claims

### Claim 1

A process for the gasification of wet biomass, which process comprises
feeding the wet biomass at a temperature of at most 370° C. and a pressure of at least 22.1 MPa (absolute) to a reactor comprising a bed of solid particles suspended in a fluid,
increasing the temperature of the feed in the presence of the bed of suspended solid particles to a temperature of at least 375° C., forming supercritical water, and
converting in the presence of the supercritical water at least a portion of the organic materials present in the wet biomass into fluid gasification product.

### Claim 2 (depends on 1)

A process as claimed in claim 1, wherein the wet biomass is selected from fermentation residues, sewage sludge, dredging sludge, algae, animal manures, and mixtures thereof.

### Claim 3 (depends on 1, 2)

A process as claimed in claim 1 or 2, wherein the wet biomass comprises at least 40% w of water, relative to the total weight of the wet biomass.

### Claim 4 (depends on 1, 2, 3)

A process as claimed in any of claims 1-3, wherein the wet biomass is fed at a pressure in the range of from 22.1 MPa to 50 MPa, in particular a pressure in the range of from 22.5 MPa to 35 MPa.

### Claim 5 (depends on 1, 2, 3, 4)

A process as claimed in any of claims 1-4, wherein the wet biomass is fed at a temperature in the range of from 280° C. to 360° C.

### Claim 6 (depends on 5)

A process as claimed in claim 5, wherein the wet biomass is fed at a temperature in the range of from 300° C. to 350° C.

### Claim 7 (depends on 1, 2, 3, 4, 5, 6)

A process as claimed in any of claims 1-6, wherein the temperature of the feed is increased in the presence of the bed of suspended solid particles to a temperature in the range of from 400° C. to 800° C.

### Claim 8 (depends on 7)

A process as claimed in claim 7, wherein the temperature of the feed is increased in the presence of the bed of suspended solid particles to a temperature in the range of from 420° C. to 760° C.

### Claim 9 (depends on 1, 2, 3, 4, 5, 6, 7, 8)

A process as claimed in any of claims 1-8, wherein the bed of suspended solid particles is a fluidised bed.

### Claim 10 (depends on 9)

A process as claimed in claim 9, wherein the fluidised bed is a bubbling fluidised bed.

### Claim 11 (depends on 1, 2, 3, 4, 5, 6, 7, 8, 9, 10)

A process as claimed in any of claims 1-10, wherein the fluid is an aqueous fluid.

### Claim 12 (depends on 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11)

A process as claimed in any of claims 1-11, wherein the suspended solid particles comprise particles selected from minerals or aggregates of minerals, crushed rock or crushed stone, salts, metals, crystalline or non-crystalline ceramics, and mixtures thereof.

### Claim 13 (depends on 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)

A process as claimed in any of claims 1-12, wherein the suspended solid particles comprise particles having a size of at least 20 μm, wherein the size of the particles is as determined by ISO 13320:2009.

### Claim 14 (depends on 13)

A process as claimed in claim 13, wherein the suspended solid particles comprise particles having a size in the range of from 20 μm to 1 mm, wherein the size of the particles is as determined by ISO 13320:2009.

### Claim 15 (depends on 14)

A process as claimed in claim 14, wherein the suspended solid particles comprise particles having a size in the range of from 50 μm to 0.5 mm, wherein the size of the particles is as determined by ISO 13320:2009.

### Claim 16 (depends on 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)

A process as claimed in any of claims 1-15, wherein the rate of temperature increase is in the range of from 1.5° C./s to 80° C./s, in particular in the range of from 2° C./s to 50° C./s.