Method and apparatus for controlling gasifier efficiency

a gasifier and efficiency control technology, applied in the field of gasifiers, can solve the problems of unfavorable many smaller-scale gasifier operations, complex operation, and unreachable, and achieve the effect of controlling the efficiency of the gasifier system

Inactive Publication Date: 2009-11-12
NEATHERY JAMES K
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0011]Embodiments of the present invention relate to a method and apparatus that detects the thermal conductivity (TC) of a ...

Problems solved by technology

Gasifier reactors are relatively simple in construction; however, the chemistry and physics involved in their operation can be quite complex and are still not well understood.
Air-blown gasification produces a low heating value gas (100-180 Btu/ft3 higher heating value) suitable for boiler, engine and turbine operation but not for pipeline transportation due to its low energy density.
The gasification of biomass, which includes crop r...

Method used

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  • Method and apparatus for controlling gasifier efficiency
  • Method and apparatus for controlling gasifier efficiency
  • Method and apparatus for controlling gasifier efficiency

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Embodiment Construction

[0018]The detailed description set forth below in connection with the appended drawings is intended as a description of various embodiments of the invention and is not intended to represent the only embodiments in which the invention may be practiced. The detailed description includes specific details for the purpose of providing a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without these specific details. In some instances, well known structures and components are shown in block diagram form in order to avoid obscuring the concepts of the invention.

[0019]One useful parameter for characterizing a gasifier system is the quantity of air or other oxidizer supplied to the gasifier or the ratio of air rate to the fuel fed or consumed. Typically for air-blown gasification, the air-fuel ratio is expressed as a dimensionless number known as the air equivalence ratio, φ:

ϕ=msuppliedmstoich

[0020]Where, ms...

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Abstract

In a gasifier system, the gas thermal conductivity of the producer gas may beneficially be used as a control variable in controlling the combustion parameters of the gasifier process or gasifier system. For example, the control variable may be used to modulate the volume amount of air provided to a gasifier vessel or to modulate an oxidizer delivery rate.

Description

RELATED APPLICATIONS[0001]The present application claims priority to provisional Patent Application Ser. No. 61 / 072,471 filed Mar. 31, 2008, the disclosure of which is incorporated by reference herein, in its entirety.SPONSORED RESEARCH AND DEVELOPMENT[0002]This invention was supported in full or in part with an award from the Kentucky Science and Technology Corporation under the Kentucky Alternative Fuel and Renewable Energy Fund Program.BACKGROUND OF THE INVENTION[0003]1. Field of the Invention[0004]The present invention relates generally to gasifiers and, more particularly, with controlling operating efficiency of a gasifier.[0005]2. Description of Related Art[0006]Gasifier reactors are relatively simple in construction; however, the chemistry and physics involved in their operation can be quite complex and are still not well understood. Conventional thermal gasification processes oxidize a portion of a fuel feedstock (containing predominantly carbon, hydrogen, and in some cases ...

Claims

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Application Information

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IPC IPC(8): C10J3/68C10J3/46C10J3/00C10J1/207
CPCC10J3/00C10J3/723C10J2300/1696C10J2300/0956C10J2300/1621C10J2300/0916
Inventor NEATHERY, JAMES K.
Owner NEATHERY JAMES K
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