Abstract: The instant invention relates to a process for the production of olefins from plastic waste, which comprises adjustment of a desired viscosity by thermal pretreatment of plastic waste in a temperature range of 350.degree. to 550.degree. C. and thermal treatment of the product obtained by the thermal pretreatment in a temperature range of 700.degree. to 1100.degree. C.

Abstract: The present invention relates to a process to sort waste mixtures by irradiating the waste objects with electromagnetic and/or acoustic waves, by picking up the waves emanating from each irradiated waste object in a signal processor to identify it, and by transmitting signals from the signal processor to a separator which sorts out the identified waste object.

Abstract: A method for determining characteristic features of processes forming radicals by sensing the temperature and/or the concentration of radicals with detectors in zones that are monitored by at least 2 detectors.

Abstract: Acoustic or electromagnetic wave energy (UV-, visible or infrared, preferably electromagnetic, particularly UV- or visible) is applied to randomly-shaped or plane materials or mixtures of such materials, whereby the materials are irradiated and the structures of the materials, particularly the surface structures of the materials, are determined by identification of the waves which arrive from the irradiated materials at a receiver-sensor, equipped with a data logger, and comparison of the thus-received data with the data of the data logger. A sorting device for sorting out thus-identified materials is operated with the aid of signals arriving from the receiver-sensor.

Abstract: The instant invention relates to a process for the detection of liquids in fibrous and/or porous materials by irradiating the materials by a source of microwaves, detecting the heat emission by temperature measuring devices and transmission of the temperature data thus obtained to a sorting device, and controlling the sorting device by the temperature data thus obtained, whereby first the materials are treated with a polymer solution and whereby residual humidity within the materials is detected after curing of the polymer and drying of the material and whereby sorting of materials, which contain residual liquids and of materials which are free of liquids is carried out, based on the differences in temperature increase.

Abstract: The present invention relates to a method for separating objects from object mixtures, and to a facility for implementing the method, whereby the object mixture is supplied to a vibrating apparatus, on which the object mixture with simultaneous object separation is moved towards a conveying device which receives the separated objects separated from each other, whereby objects not being sufficiently separated for separate supply to the conveying device due to insufficient separation on the vibrating apparatus are fed to another conveying device which enables to return the objects to the vibrating apparatus.

Abstract: The instant invention relates to a process and device for waste incineration with an oxidation agent, which consists of oxygen in a higher concentration than in air, whereby the combustion gases pass through a filter, which is resistant to high temperatures and which is arranged behind the combustion zone and whereby the gases are cooled subsequently.

Abstract: The present invention relates to a process for the recovery of metals and coatings present on the metals from composite materials by means of the treatment of the composite materials with specific solvents at elevated temperatures, whereby the coating is dissolved and recovered from this solution while the metal is quantitatively separated from the solution in a pure state, after which it can be recycled.

Abstract: Used oils, especially used lube oils, after rough filtering are mixed with an aqueous solution of water glass and an aqueous solution of polyalkylene glycol while stirring at elevated temperature, the obtained mixture is allowed to settle, the settlings are separated, and water and light ends are removed from the oil phase by distillation. The thus obtained dry oil phase may be subjected to adsorptive filtering either direct or through a per se known treatment with dispersed sodium and may finally be fractionated by distillation.

Abstract: A process is disclosed for reprocessing contaminated oils, such as used crankcase oil from automobile engines, by thermal treatment, such as visbreaking, in the presence of other hydrocarbon feedstocks, followed by fractional distillation for the recovery of a gasoline fraction, a carboxylic acid fraction, a gas oil fraction containing chlorinated hydrocarbons and a high boiling bottoms fraction. The gas oil fraction is subjected to catalytic hydrocracking with the simultaneous destruction of chlorinated hydrocarbons. The resulting hydrocracked oils, after separation of hydrogen chloride, are free from chlorine compounds and other contaminants.