Patent DE-102007056907-A1 (DE)
Title: Plant for thermal treatment and recycling of waste materials on the basis of paper and/or plastics in the form of composite carton, comprises a reactor with a housing, an inlet, an outlet and a heating unit, and a separator
Inventor: MORSCHETT PETER
IPC: C10L3/00
Filed: 2007-11-22
Abstract: The plant for thermal treatment and recycling of waste materials on the basis of paper and/or plastics in the form of composite carton comprises a reactor (1) with a housing, in which a screw is arranged, an inlet for the waste material as initial substance (SA), an outlet for the thermally treated final substance (SE), a heating unit (2) for heating the reactor and with a suction for the suction of separated gases and vapors during the thermal treatment of the waste material, and a separator, in which metal is separated from smoldered/pyrolysed paper and/or plastic parts. The plant for thermal treatment and recycling of waste materials on the basis of paper and/or plastics in the form of composite carton, comprises a reactor (1) with a housing, in which a screw is arranged, an inlet for the waste material as initial substance (SA), an outlet for the thermally treated final substance (SE), a heating unit (2) for heating the reactor and with a suction for the suction of separated gases and vapors during the thermal treatment of the waste material, and a separator, in which metal is separated from smoldered/pyrolysed paper and/or plastic parts. The reactor and/or the housing is extensively and/or completely sealed against the environment. The inlet in the housing and/or the outlet from the housing are formed in the form of a cellular wheel sluice guaranteeing the sealing for the surrounding atmosphere. The area of the screw at the inlet has a riser (a), in which the initial substances are condensed so that a sealing is guaranteed for the surrounding atmosphere. The area of the screw present itself before the outlet has a raiser (c), in which the final substances are condensed so that the sealing is guaranteed for the surrounding atmosphere. The heating unit has a combustor (5) for thermal combustion of gas/vapor or of rest gases formed from the gas/vapor. The first part (T1) of the gas/vapor or rest gas is supplyable to the combustor and the heating unit and the second part (T2) of the gas/vapor or the rest gas is supplyable to an energy supply unit (9). The volume of the treated substances in relation to the volume of the initial substances is reduced up to 90%. A condensator (4) is arranged downstream to an oil precipitator. A recooling plant is arranged between the condensator and the oil precipitator for generating a cooling circuit. In the reactor, a temperature guaranteeing the low temperature pyrolysis of the initial substances is adjustable at up to 500[deg] C, a temperature guaranteeing the middle temperature pyrolysis is adjusted at 500-800[deg] C, and a temperature guaranteeing the high temperature pyrolysis is adjusted at 800[deg] C. The temperature in the reactor is 250-800[deg] C. The final substances are deposited or recirculatable into economic cycle. The initial substances are used in the form of minerals e.g. sand and stone, miscellaneous waste from the mechanical treatment of waste and from the shredders of metal containing waste like coated packaging, spit materials, cellulose sludge, deinking sludge, oil containing waste, sludge having dangerous material from the treatment of waste water in industries, biological treatment of industrial waste water, physical and chemical treatment and from sewer cleaning, sludge or emulsions from desalination, residues from scrap processing, waste with organic pesticides, wood preventives and biocides, waste from sand trap plant and oil-water precipitators, sanitation of base and ground water, mechanical chipping and/or physical and mechanical surface treatment of metal and plastic, track skeleton, sand of the turbulence layer that occur in the combustion or pyrolysis of waste, waste from waste oil processing, medical and hospital waste, shredder waste from vehicle core of the scrap car application, production wastes, DSD (Duales System Deutschland) sorting residue, faeces from animal husbandry, and/or substances from the animal body disposal. The final substances are ash with metal deposition in the use of initial substances in the form of spit material, shredder waste and/or DSD sorting residue. The sucked gas/vapor is used as combustion gas. The final substance serving as fuel and/or the combustion gas is used for the operation of the plant. The volume of the treated substance is reduced to the volume of the initial substances. The housing has height that is larger over the total length of the screw or area wisely larger than the diameter of the screw present itself in the housing, which rejuvenates itself in the cross-section towards the top. A discharge screw conveyor joins at the outlet of the reactor and is arranged in a perforated screw jacket pipe at its under side. Units existing out of housing and the screw are arranged in the reactor next to one another and/or above one another. The reactors are coupled to each other. The housing and the screw have a bias that extends in direction to discharge opening. An independent claim is included for a procedure for thermal treatment of waste materials from composite cartons by reactors.