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Furnace for heating particles

a technology for heating particles and furnaces, applied in the field of particles processing, can solve problems such as energy inefficiency, and achieve the effect of reducing heat loss and energy efficient systems

Inactive Publication Date: 2007-11-29
JAMES HARDIE INT FINANCE BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0004]The present invention solves problems found with many current furnaces for heating particles and are configured to reduce heat loss and provide an energy efficient system. Furnaces of the present invention also provide improved characteristics with regard to anti-fouling, process efficiency, and yield.

Problems solved by technology

Current furnaces for heating particles operate with a sufficient amount of heat loss and are often energy inefficient.

Method used

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Examples

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Embodiment Construction

[0035]Although making and using various embodiments of the present invention are discussed in detail below, it should be appreciated that the present invention provides many inventive concepts that may be embodied in a wide variety of contexts. The specific aspects and embodiments discussed herein are merely illustrative of ways to make and use the invention, and do not limit the scope of the invention.

[0036]In the description that follows like parts are marked throughout the specification and drawing with the same reference numerals, respectively. The drawing figures are not necessarily to scale and certain features may be shown exaggerated in scale or in a somewhat generalized or schematic form in the interest of clarity and conciseness.

[0037]Various types of furnaces may be used to process particles. The furnace design approaches may be applicable to various types of furnaces. For example, some furnace embodiments are disclosed in applicants co-pending application having Ser. No....

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Abstract

A bottom-up cocurrent combustion furnace for the production of synthetic microspheres by thermal expansion of glass particles is provided having improved characteristics with regard to anti-fouling, process efficiency, and yield. The disclosed furnace uses preheated combustion air to preheat the feed material and to convey the feed material in a dilute phase transport regime to a burner. The combustion air, fuel, and feed material are premixed prior to being injected though the burner. The feed material rapidly expands as it is ejected through the burner and through a flame and then rapidly cools to solidify the microspheres. Additional features are provided to prevent the furnace from fouling by keeping the feed material away from the furnace walls, removing feed material that adheres to the furnace walls, and collecting feed material that agglomerates or does not expand.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of U.S. Provisional Patent Application No. 60 / 648,480, filed May 25, 2005.BACKGROUND OF THE INVENTION[0002]The present invention relates generally to the processing of particles and, more particularly, to a furnace for heating particles.[0003]Current furnaces for heating particles operate with a sufficient amount of heat loss and are often energy inefficient. Therefore, there remains a need to provide improved furnaces for heating particles that reduce heat loss and are energy efficient.SUMMARY OF THE INVENTION[0004]The present invention solves problems found with many current furnaces for heating particles and are configured to reduce heat loss and provide an energy efficient system. Furnaces of the present invention also provide improved characteristics with regard to anti-fouling, process efficiency, and yield.[0005]The present invention includes a furnace configured to process particles. The particle...

Claims

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Application Information

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IPC IPC(8): F23D11/36
CPCB22F3/003C03B19/109C03B19/102
Inventor BISCAN, GIANGBLAKE, CHARLES D.CRESSWELL, RONALD W.EVERHART, ROBERT E.HOJAJI, HAMIDPHAM, THINHSTEVENS, MARK G.
Owner JAMES HARDIE INT FINANCE BV
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