Pyrolysis boiler
AssigneePyroheat OÜ
InventorMark Solonin
Life of this patent
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Abstract
Heat and power engineering, specifically being heating devices includes a pyrolysis boiler, in which, wood is subjected to high-temperature gasification and pyrolysis with subsequent burning off of pyrolysis gases. A stable and controllable gasification of wood with a natural high moisture content is achieved, and at the same time, a highly efficient transfer of combustion heat to a liquid heat-transfer agent is obtained. A gasification chamber is positioned between two compartments of a pyrolysis gas combustion chamber of the pyrolysis boiler, while the external wall of the combustion chamber is used as a heat-transfer surface, and at the same time, neither the fuel bunker nor the gasification chamber are in contact with water.
Claims11
A pyrolysis boiler comprising:
- a single vertical housing comprising within a rectangular hopper for solid fuel and a gasification chamber below the rectangular hopper, which has an internal heat-resistant thermal insulation coating, and an outlet window with a grate whereby pyrolysis gases can exit;
- a pyrolysis gas combustion chamber in the form of two symmetrical, parallel, horizontal compartments;
- primary and secondary air supply ducts supplying primary and secondary air and a pressure fan installed outside the housing;
- a double-walled water cavity surrounding the pyrolysis gas combustion chamber, in such a way, that an outer wall of the combustion chamber is also an inner wall of the water cavity,
- wherein the gasification chamber is placed with no gap between the two compartments of the pyrolysis gas combustion chamber, and horizontal slots are located into side surfaces of the compartments of the combustion chamber facing the gasification chamber, which ensure that flow of the pyrolysis gas passes from the outlet window of the gasification chamber to the combustion chamber with the flow turning 90 degrees left and right.
Dependencies are inferred from the claim text.