Patent ID: 7906695
Filing Date: 2011-03-15
Classification: F23G,F23J,Y02E

Abstract:
1. A method for combustion comprising: providing a combustible feed material; providing a combustion container within which the combustion of the feed material occurs; the combustion container including a reactor portion for initial heating of the feed material; the combustion container including an exterior chamber within which at least a part of the reaction portion is located such that combustion of material in the exterior chamber causes heating of the feed material in the reactor portion; feeding the feed material into the reactor portion at a feed location; the reactor portion including at least one contact surface onto which the feed material is deposited and against which the feed material is in contact when heated; causing the combustion in the exterior chamber to heat the feed material in contact with said at least one contact surface of the reactor portion to a temperature above 600 degrees Celsius so as to cause the feed material in contact with said at least one contact surface of the reactor portion to break down to breakdown products comprising solid breakdown materials and gaseous breakdown materials including combustible gases; introducing combustion air into the exterior chamber for mixing with the breakdown products to effect combustion thereof; causing the breakdown products to exit the reactor portion into the exterior chamber for combustion therein to form solid combustion products and gaseous combustion products; providing a flue for extraction of the gaseous combustion products from the exterior chamber and generating a flow of the gaseous combustion products from the exterior chamber into the flue; providing an extraction system for the solid combustion products from a bottom of the exterior chamber; while the feed material is in contact with said at least one contact surface of the reactor portion, causing downward movement of the feed material by gravity acting on the feed material from the feed location downwardly to a bottom of said at least one contact surface; causing the solid breakdown products to exit downwardly under gravity from the bottom of said at least one contact surface of the reactor portion into said exterior chamber; and arranging the shape and orientation of said at least one contact surface of the reactor portion and controlling the combustion in the exterior chamber so as to maintain the feed materials in contact with said at least one contact surface of the reactor portion for a sufficient period of time to allow the breakdown to occur.