Method for improving gasification efficiency through the use of waste heat

US20070220810A1Inactive Publication Date: 2007-09-27ZEROPOINT CLEAN TECH
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
ZEROPOINT CLEAN TECH
Publication Date
2007-09-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method for recycling the waste heat generated from an external process, which is fuelled by syngas, into a gasification process to enhance the energy density of the syngas produced as well as the overall gasification efficiency of the system. A method is provided for utilizing the waste heat contained in a stream exiting in the syngas fueled process to vaporize water and produce steam. The steam is then upgraded by first exchanging energy with the hot syngas exiting the gasifier and then within the gasifier itself to a temperature where significant steam gasification of the biomass occurs. The process within the gasifier is driven by introducing a small amount of air into the gasifier such that some biomass is directly combusted to provide the heat required by the process.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims benefit of co-pending U.S. Provisional Patent Application Nos. 60 / 785,519, filed Mar. 24, 2006, entitled METHOD TO IMPROVE GASIFICATION EFFICIENCY THROUGH THE USE OF WASTE HEAT, and 60 / 785,520, filed Mar. 24, 2006, entitled GASIFICATION SYSTEMS, and commonly assigned to the assignee of the present application, the disclosures of which are incorporated by reference in their entirety herein. FIELD OF THE INVENTION

[0002] The present invention relates to gasifier equipment and to the process of gasification of carbon containing solids into combustible gases. The improvement may be used to enrich the calorific density and hydrogen content of the produced syngas while simultaneously improving the thermal efficiency of the gasification process. BACKGROUND OF THE ART

[0003] Gasification processes convert carbon-containing solids of liquids into combustible gases that ideally contain all the energy originally present in ...

Claims

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