Patent DE-102006021624-A1 (DE)
Title: Device for producing pressurized hot gas, comprises a pot like cyclone combustor arranged in a boiler having a cylindrical section, a lid section and a bottom section, a cyclone for cleaning the produced pressurized hot gas, and an agitator
Inventor: ARTMANN MICHAEL
IPC: F23R3/58
Filed: 2006-05-09
Abstract: The device for producing pressurized hot gas, comprises a pot like cyclone combustor (14) arranged in a boiler (12) having a cylindrical section, a lid section and a bottom section, a cyclone (15) for cleaning the produced pressurized hot gas, and an agitator intended between the inner side of the boiler and the outer side of the cyclone combustor by joints. The cyclone is concentrically arranged to the cyclone combustor in which the pressure of the pressurized hot gas prevails. The boiler encloses the cyclone combustor having a cylinder wall (29) and an upper lid wall. The device for producing pressurized hot gas, comprises a pot like cyclone combustor (14) arranged in a boiler (12) having a cylindrical section, a lid section and a bottom section, a cyclone (15) for cleaning the produced pressurized hot gas, and an agitator intended between the inner side of the boiler and the outer side of the cyclone combustor by joints. The cyclone is concentrically arranged to the cyclone combustor in which the pressure of the pressurized hot gas prevails. The boiler encloses the cyclone combustor having a cylinder wall (29) and an upper lid wall, in such a manner that an annular space (31) is built between the cyclone combustor and the cyclone having a cylindrical section, a downwardly tapering conical section and a central outlet pipe. The bottom section of the cylinder wall and the boiler are arranged within a first interval of distance and at the circumferential section of the cylinder wall that is opened at the bottom. A mechanism is arranged in the lower section of the annular space and/or in the bottom section of the boiler for feeding of combustible materials and/or a mechanism for production of combustible gases from biological materials. A wood gasifier is provided with a decomposition zone for decomposition of the biological material or wood into low-temperature carbonization gases, with an oxidation zone for oxidation of carbon and hydrogen to generate process heat and for splitting up of the hydrocarbons, and with reduction zone for reduction of the oxidation products, carbon dioxide and water at the glowing coal or charcoal for the formation of the actual wood gases or product gases. A glowing bed is built in the oxidation zone. The circumferential section of the cylinder wall is opened at the bottom. At the lower cylinder section of the boiler in the region of the oxidation zone, a large number of openings are arranged at the periphery for feeding of pressurized oxygen or pressurized air. The boiler is built in a double-walled manner to form an air space between the exterior and interior wall of the boiler for the supply of oxygen. The cylinder wall of the cyclone combustor is built as a double-wall and/or is provided on the inner side with slots and/or channels, which lead into the oxidation zone. In the interior of the cyclone combustor, many openings or nozzles are arranged at the periphery for tangential feeding of oxygen or air into the cyclone combustor so that a swirl flow is caused in the cyclone combustor. An inlet opening is arranged in the lid section of the boiler for biomass or wood. A chamber lock is arranged at the inlet opening. An opening is provided in the upper central section of the cyclone combustor for hot steam, which is supplied to the hot gas. A line is provided between an upper central section of the combustor and a multitude of tangential openings or nozzles that lead into the inner peripheral wall of the cyclone to establish an overflow of the hot gas from the combustor into the cyclone. The outlet line has openings at its upper section that are peripherally distributed for flowing of the purified hot gas. The pipeline leads into the outlet pipe for feeding of oxygen or air into the outlet pipe in which a post-combustor is formed and a temperature control of the discharged hot gas is effected by feeding of air. The outlet pipe runs out from the bottom section of the boiler. The bottom section of the boiler is formed with a cylindrical extension, which stretches itself downwards and which is provided with an ash discharge opening, which is in turn provided with a valve, so that the ash is discharged from the mechanism for the production of combustible gases. The agitator has peripherally-distributed and vertically-extending bars, which extend themselves from a circumferential section of the bottom section of the boiler to a central section of the bottom section of the boiler. An independent claim is included for a procedure for the production of pressurized hot gas.