High efficiency cyclone gasifying combustion burner and method

Abstract

A cyclone gasifying combustion burner and its operation is described. An exemplary burner has an inner cylindrical wall with a contour chamber feeding combustion air into the inner cylindrical wall, with an open end and a solid fuel support end where a combustible material forms a fuel bed. The inner cylindrical wall has a series of inclined air jet holes of substantially predetermined diameter and disposed at substantially predetermined locations therein to create a unidirectional cyclone within a combustion zone defined within the inner cylindrical wall. The air jet holes are disposed at a tangential and vertical angle whereby the combustion air is drawn into the inner cylindrical wall and creates a cyclone flow to mix with the combustion gases released from the flaming pyrolysis fuel bed and causes the combustion gases to flow in a cyclone path within a reaction zone to increase the residency, mixing and turbulence time of the combustion gases and simultaneously precipitate suspended particles against an inner surface of the inner cylindrical wall whereby the particles are caused to gravitate to the fuel bed where they are removed in a controlled manner during the operation of the burner.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims priority to Canadian Patent Application No. ______, filed on Dec. 15, 2005, and entitled “High Efficiency Cyclone Gasifying Combustion Burner to Produce Thermal Energy and Devices and Method of Operation”, and hereby incorporated by reference. TECHNICAL FIELD [0002] The present invention relates in general to fuel burners, and in particular to a high-efficiency cyclone gasifying combustion burner and methods of operation. BACKGROUND ART [0003] In U.S. Pat. No. 6,336,449, a solid fuel burner is disclosed of cylindrical shape with holes disposed in an inner cylindrical wall to create a swirling motion to burn the combustion gases. Further experimental work and testing of this concept has led to important improvements beneficial to human health. [0004] There has been a considerable increase in the use of wood-burning devices to heat residential buildings. This increase has been precipitated by the high cost of oil a...

AI Technical Summary

Benefits of technology

[0022] In accordance with an exemplary embodiment, there is provided a cyclone gasifying combustion burner having a combustion housing defined by an inner cylindrical wall surrounded by a manifold chamber having a combustion air inlet mechanism or system. The inner cylindrical wall has air jet holes therein of predetermined diameter and disposed at a predetermined angle to create an air cyclone flow in a reaction zone in the inner cylindrical wall spaced above a lower combustion gas supply. The cyclone flow in the reaction zone increases the residency time, turbulence, mixing of oxygen with volatile gases for substantially complete combustion of gases drawn in the reaction zone thereby substantially reducing the emission of pollutants into the atmosphere.

[0023] In accordance with an exemplary embodiment, a method of substantially reducing the emission levels of any one of volatile organic compounds (VOC), particulates, entrained fly ash, and/or the

Problems solved by technology

This increase has been precipitated by the high cost of oil and gas.

However, these wood-burning devices pollute the atmosphere and are harmful to human health.

Smoke from the combustion of wood is present in both inside and outside the home.

At the local level, wood combustion may contribute far more severely to pollution.

In addition to emitting contaminants outdoors, wood combustion units may alter the quality of the air inside the home as portions of the combustion g

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