Combustion apparatus

US4724779A · kind A · utility

Inventors

• John White · Port Moody, CA
• Kenneth S. Dunn

Key dates

• Filing date: Oct 21, 1986
• Grant date: Feb 16, 1988
• Expiry date: Oct 21, 2006

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23G2202/101
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

An incinerator comprises a combustion chamber 1 having a hearth comprising a grid 2, a vibrator 17 for vibrating the grid, and ash removal means 9, 18 for collecting ash that falls through the grid. The grid normally consists of a series of parallel bars and, when the hearth is elongated, these bars normally extend along the length of the hearth. The ash removal means comprises an inclined trough 9 and a hopper 18. Ash may be removed as a slurry. The incinerator comprises a sub-stoichiometric chamber to which is supplied insufficient oxygen for complete combustion Vibration of the grid allows ash to fall through the hearth and to be collected in the trough without ash causing abrasion to the incinerator components to improve the rate of burning. A preferred sub-stoichiometric chamber is separated from an ignition zone for a secondary chamber by a partition that defines a jacket around the zone, whereby improved heat exchange and compactness is achieved.