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Downdraft gasifier with internal cyclonic combustion chamber

a gasifier and cyclonic combustion technology, which is applied in the direction of combustible gas production, combustion types, lighting and heating apparatus, etc., can solve the problems of affecting the gasification effect of gasification gas, affecting the gasification effect of output gasses, and reducing the gasification efficiency of gasification

Inactive Publication Date: 2008-05-01
BOARD OF REGENTS FOR OKLAHOMA STATE UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Improper handling and processing of the biomass can result in a suboptimal amount of the raw biomass being gasified.
Unacceptably high levels of undesirables can also be produced and taint the output gasses if the production process is not controlled.

Method used

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  • Downdraft gasifier with internal cyclonic combustion chamber
  • Downdraft gasifier with internal cyclonic combustion chamber
  • Downdraft gasifier with internal cyclonic combustion chamber

Examples

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Embodiment Construction

[0014]Referring now to FIG. 1, a schematic diagram illustrating one embodiment of a gasification system according to aspects of the present disclosure is shown. The gasifier system 100 comprises three primary components: a biomass feeding unit 102; a combustion chamber 104; and a separator 106. These primary components may further comprise a number of subcomponents, which will be described in detail below. The system 100 is operable to accept biomass as an input product and provide useful gases as an output product. The producer gas may be a mixture of carbon monoxide (CO), carbon dioxide (CO2), hydrogen (H2), and possibly other gases. In one embodiment, the gasification system 100 operates to convert biomass material into the desired gases by means of pyrolysis and tar cracking. This result may be achieved by creating high temperatures within the combustion chamber 104. This causes the biomass material to break down into a number of materials, including ash and gases.

[0015]The biom...

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Abstract

A downdraft gasifier is disclosed. The gasifier has a biomass feeding unit, a combustion chamber, and a separator unit. The biomass feeding unit accepts raw biomass materials and selectively feeds the materials into the combustion chamber. The combustion chamber provides means to induce pyrolysis, tar cracking, and char gasification of the raw biomass materials to produce gases and ash. The separator unit accepts the gases and ash from the combustion chamber and separates the gases from the ash.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of U.S. Provisional Application No. 60 / 818,925 filed on Jul. 6, 2006, titled “Downdraft Gasifier with Internal Cyclonic Combustion Chamber,” which is incorporated herein by reference.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT[0002]This invention was made with government support under contracts 2000-52104-9662, 2003-34447-13162, and 2004-34447-14487 awarded by United States Department of Agriculture—Cooperative State Research, Education, and Extension Service. The government has certain rights in the invention.FIELD OF THE INVENTION[0003]This disclosure relates to gasification of biomass materials in general and, more specifically, to gasification by downdraft gasifiers.BACKGROUND OF THE INVENTION[0004]Biomass may be converted into useful gas products such as carbon monoxide (CO), carbon dioxide (CO2), hydrogen (H2), and others. There are multiple processes by which the raw biomass m...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10J3/32C10J3/60
CPCC10J3/26F23G5/027F23G2201/303F23G2201/40F23G2205/14C10J2200/158F23G2900/50002C10J3/32C10J3/36C10K1/02F23G2205/18Y02P20/145
Inventor PATIL, KRUSHNA N.HUHNKE, RAYMOND L.BELLMER, DANIELLE D.
Owner BOARD OF REGENTS FOR OKLAHOMA STATE UNIVERSITY
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