Abstract:
Process for solid waste treatment, and particularly municipal solid waste, with recovery of the thermal energy, which is based on the general pyrolysis process modified in order to improve, on the one hand, the energy yield and, on the other, to reduce the quantity of unusable solid residues to be sent to the waste disposal, the unusable solid waste being limited to 10-15% of the total weight of the initial residue. The process and relative plant include a boosted treatment of the incoming waste, with a preliminary separation into three solid fractions, the first one of which is separately subjected to a preliminary drying step and the third one undergoes further shredding. The process and relative plant also include a section for recovering energy from the pyrolysis coke, wherein the latter is subjected to a thermochemical treatment with the production of a further quantity of synthesis gas.
Abstract:
The present invention discloses a process and equipment for the complete thermal annihilation of proteins contained in material of animal or vegetable origin, in solid or semisolid state, that comprises the steps of: (a) previously milling the material of animal or vegetable origin to assure that the drying step reaches to be completed in the whole material, without remaining areas or pieces with high humidity that can not reach high temperatures by being shielded from the heat; (b) drying the whole material to be able to increase the combustion temperature of the solids from 800null C. to 1350null C.; (c) thermally annihilating the material, by means of a combustion in a refractory oven, either shredded or powdered and in suspension, to achieve the high required temperature to be reached and kept within the whole material; that there is an homogeneous oxygen concentration and that it can be sure that the time of treatment allows for getting the thermal annihilation; and (d) recovering the heat of combustion of the material, which should be carried out only after the total oxidation of the material, never during its combustion, for not allowing to decrease the temperature before the treatment of thermal annihilation has been completed.
Abstract:
The present invention relates to reaction equipment for the treatment of organic and/or inorganic waste of refineries or petrochemical plants comprising: • - a drying and pyrolysis device (4) which rotates around its longitudinal, tilted rotation axis (A), • - a gasification device (6) which rotates around its longitudinal, horizontal rotation axis (B), • - a combustion device (14) comprising a burner (13) having a longitudinal horizontal axis (C), • - at least one settling chamber (15) for the collection of intermediate solid residues and the accumulation of intermediate gaseous reaction products, • - at least one outlet duct of the gaseous end-products (16), at least one outlet duct of the solid end-products (7), and at least one inlet duct of the feedstock (2) • - said combustion device (14), drying and pyrolysis device (4), gasification device (6) are physically separated and positioned on three different levels, • - the longitudinal rotation axis (A) of the drying and pyrolysis device (4) is tilted with respect to both the longitudinal rotation axis (B) of the gasification device (6) and also with respect to the longitudinal axis (C) of the combustion device (14), • - the longitudinal rotation axis (B) of the gasification device (6) is parallel to the longitudinal axis (C) of the combustion device (14), • - the combustion device (14) is in fluid communication with the drying and pyrolysis device (4), • - the drying and pyrolysis device (4) comprises, in its interior, a first indirect heat exchange device (3) in which the combustion fumes coming from the combustion device (14) flow, • - at least one settling chamber (15) in fluid communication with said drying and pyrolysis device (4) and with said gasification device (6) and with said combustion device (14), • - conveying means (5) are positioned in the settling chamber (15) and put the drying and pyrolysis device (4) in fluid communication with the gasification device, • - it comprises a second heat exchange device (12) in fluid communication with the first indirect heat exchange device (3) and the combustion device (14), • - it comprises means for the suction of the intermediate gaseous reaction products, said means being positioned in the settling chamber (15).
Abstract:
PROBLEM TO BE SOLVED: To increase a throughput of materials to be treated per one carbonization furnace. SOLUTION: The carbonization furnace is equipped with two or more groups 11, 11' of inner furnaces and a movable outer furnace 20. The groups 11, 11' of inner furnaces comprise two or more inner furnaces 10, 10'. The inner furnaces 10, 10' have inner furnace lids 12, 12' to be opened and closed. The movable outer furnace 20 has an opening end 21 and freely moves between the groups 11, 11' of inner furnaces. The movable outer furnace 20 takes either one of the groups 11 or 11' of inner furnaces from the opening end 21 into inside and forms a combustion chamber between the movable outer furnace 20 and the outer surface of the inner furnace 10 or 10'. The material to be treated carried into the inner furnace 10 is carbonized by burning a burner or the like in the combustion chamber. COPYRIGHT: (C)2004,JPO