Method of gasifying carbonaceous material and a gasification system

US20130306913A1Inactive Publication Date: 2013-11-21CURTAIN UNIV OF TECH
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
CURTAIN UNIV OF TECH
Publication Date
2013-11-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method of gasifying carbonaceous material is described. The method comprises a first step of pyrolysing and partially gasifying the carbonaceous material to produce volatiles and char. The volatiles and the char are then separated and, subsequently, the char is gasified and the volatiles are reformed. The raw product gas is then finally cleaned with char or char-supported catalysts or other catalysts.
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Description

FIELD OF THE INVENTION

[0001] The present invention relates to a method of gasifying carbonaceous material and a gasification system.BACKGROUND OF THE INVENTION

[0002] Gasification refers to the conversion of a solid or liquid material, such as a carbonaceous material, into a gaseous fuel. Gasification is of interest for many low-emission technologies in chemical and energy industries.

[0003] Gasification of a carbonaceous material can be conceptually divided into two steps although a clear distinction between the two steps is not possible. As the (solid) carbonaceous material is heated up, a mixture of gas and vapour (“volatiles”), including moisture of the carbonaceous material, is released from the carbonaceous material, leaving a solid residue (“char”). Both the volatiles and the char then react with gasifying agents such as H2O and O2 to form a product gas.

[0004] Low-rank carbonaceous fuels such as brown coal (lignite), peat, biomass and solid wastes are particularly suitable for gasi...

Claims

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