# US 2009/0260286 A1 · Biomass gasification apparatus

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- Number: US 2009/0260286 A1
- Document ID: US20090260286A1
- Status: Published application
- Kind: A1
- Application number: 12/097,905
- Filed: 2006-11-16
- Published: 2009-10-22
- Earliest claimed: 2005-12-28
- Assignees: Chugai Ro Co., Ltd., a corporation of Japan
- Inventors: Kenichi Sasauchi; Miki Taniguchi; Takumi Kato
- Web page: https://patentgrep.com/patent/US20090260286A1

## CPC

- C10J 3/66: by introducing them into the gasification zone
- C10J 3/24: to permit flow of gases or vapours other than upwardly through the fuel bed
- C10J 3/84: with means for removing dust or tar from the gas
- C10J 2200/09: Mechanical details of gasifiers not otherwise provided for, e.g. sealing means
- C10J 2200/156: Sluices, e.g. mechanical sluices for preventing escape of gas through the feed inlet
- C10J 2300/0916: Biomass
- C10J 2300/1215: using synthesis gas as fuel
- 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

## Abstract

A compact biomass gasification apparatus is capable of gasifying a wide variety of biomass materials, without regard to their size and/or the water content of those materials, and also capable of substantially removing the tar component generated in a gasification process. A biomass gasification apparatus primarily includes an externally heated rotary kiln-type thermal cracking unit (2) indirectly heating and thermally cracking a biomass material to generate a tar-containing pyrolysis gas and char from the biomass material, and a gasification unit (3) receiving the tar-containing pyrolysis gas and char from the thermal cracking unit (2) and thermally cracking the tar component in the pyrolysis gas and gasifying the char by an oxidation gas being introduced therein.

## Claims

### Claim 1

A biomass gasification apparatus comprising:
an externally heated rotary kiln thermal cracking unit that indirectly heats and thermally cracks a biomass material to generate a tar-containing pyrolysis gas and char from the biomass material, and
a gasification unit that receives the tar-containing pyrolysis gas and char from said thermal cracking unit, and thermally cracks the tar component in the pyrolysis gas and gasifies the char by an oxidation gas introduced therein.

### Claim 2 (depends on 1)

The biomass gasification apparatus according to claim 1, wherein said gasification unit includes a tar component thermal cracking region in which the tar component is thermally cracked, and a char gasification region in which the char is gasified and the remaining ash discharged therefrom.

### Claim 3 (depends on 1)

The biomass gasification apparatus according to claim 1, wherein said gasification unit is structured as a shaft furnace.

### Claim 4 (depends on 2)

The biomass gasification apparatus according to claim 2, wherein said gasification unit is structured as a shaft furnace.