Method of fuel for energetics production
AssigneeHedviga Group, A.S.
InventorsPetr Cuber, Monika Pullmanová
Life of this patent
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Abstract
Pressure vessels containing a charge are preheated at pressure of 2 to 5 kPa with liquid heat carrier to maximally 120° C. They are afterheated in another place to maximally 550° C. The pressure vessels are continually added and/or replaced and generated gasses are continuously drawn off, cooled to maximally 60° C. and separated oily condensate. Residual gasses and solid residues are burned after treatment in a cogeneration unit.
Claims11
Method of producing fuel for energetics in which a carbonaceous material is processed by means of thermal decomposition without the presence of flame, wherein the method comprises:
- placing a charge of material into a cavity inside a mobile container, wherein the mobile container is a pressure vessel (1) with a gas outlet (5);
- closing the mobile container after insertion of the charge and placing the mobile container into a preheating unit (2);
- connecting the gas outlet (5) to a gas pipeline (7);
- exhausting present air with contingent gases from the pressure vessel (1) through the gas outlet (5) such that the pressure in the pressure vessel (1) is decreased to 2 to 5 kPa;
- preheating the pressure vessel (1) in the state connected to the gas pipeline (7) to a temperature of 90 to 120° C., wherein this preheating is done within 60 to 120 minutes and during this time period, pressure in the connected gas pipeline (7) is maintained at 2 to 5 kPa;
- drawing off a gas mixture released by thermal decomposition of the charge in the pressure vessel (1) through the gas pipeline (7), wherein a solid residue remains in the mobile container;
- closing and disconnecting the gas outlet (5),
- relocating the pressure vessel (1) in closed state to an afterheating unit (3);
- reconnecting the gas outlet (5) to the gas pipeline (7) and opening the gas outlet (5);
- heating the pressure vessel (1) in the afterheating unit (3) to a higher temperature, but not higher than 550° C., for a time up to 180 minutes, while during this time period, pressure in the connected gas pipeline (7) is maintained at 2 to 5 kPa and the gas mixture generated in the pressure vessel (1) is drawn off through this gas pipeline (7).
Dependencies are inferred from the claim text.