Abstract: Method for the production of catalytically active mixed phases in powder form from precursors which contain the elements of the mixed phase and are treated thermally and mechanically.The precursor or precursors contained in a solution or suspension are applied to heated surfaces of moving heat carrying bodies and precipitated and dissociated on them with evaporation of the solvent or of the liquid component of the suspension. The mixed phase formed on the heat carrying bodies is removed from the heat carrying bodies and then, to prepare it for further use, it is crushed.

Abstract: Method for the removal of nitrogen from the exhausts of burners after they are cleaned of dust or sulfur, in which the nitrogen-bearing exhaust gases are reheated by the transfer of heat from the denitrogenated exhaust gases in a regenerative heat exchanger.Before they are finally heated to the temperature level of the reduction reaction, the nitrogen-bearing exhaust gases, and, after their reduction, the denitrogenated exhaust gases, are passed countercurrently to one another in a cyclical alternation, through heat exchanging storage masses in an additional catalytic converter serving as the main converter, whose surfaces are provided with catalytically active compounds.

Abstract: An embossed, solid-surface or grid-like metal base structure is degreased and etched and then provided with a vitreous enamel coating, using an enamel which forms a low-porosity bottom layer and a rough top layer of high resistance to acid. The base structure coated with this ground coat of enamel is immersed in a catalyst slip liquefying under the action of shear forces, which is prepared essentially from a powder of the catalytically active compounds, a binding agent, water, and, in some cases, one or more wetting agents. The wetted base structure is removed from the bath while movement of the slip bath is sustained by a stirrer or a vibrator, and then delivered to a drying process. The dried coating of slip can, if necessary, also be calcined and/or impregnated with an alkyl silicate or a solution thereof.

Abstract: A sulphite cooking process is described for the production of pulp from materials containing lignocelluloses, with recovery of the cooking chemicals, in which the cooking, the blowing, the washing and the bleaching are performed sucessively. The waste liquor is subjected to several thermal treatments for the recovery of the cooking chemicals. For the cooking of the lignocellulosic materials, alkaline sulphite solutions are used, to which one or, in mixture, several low-boiling solvents are added, as well as at least one compound suitable as a redox catalyst.

Abstract: A method of and installation for incineration of solid and, if desired, liquid waste. The installation comprises a pyrolysis chamber and connected directly therebelow a combustion chamber. Exhaust gas ducts which cover the outer walls of the pyrolysis chamber either partly or completely in such a way that the covered wall surfaces of the pyrolysis chamber serve as the inner walls of the exhaust gas ducts. One or more swivelling gate elements which when moved create passages of different cross-sections through which solid and gaseous products from the pyrolysis process are discharged from the pyrolysis chamber into the combustion chamber. Combustion air supply inlets are arranged in flow direction behind the gate elements.

Abstract: Ducts for carrying off hot gas given off from the combustion chamber of an incinerator are built into the outer walls of a pyrolysis chamber located above the combustion chamber. The pyrolysis chamber has cross-sectional dimensions that are small enough to assure that heat from the gas ducts in walls completely penetrate the fill of waste in the pyrolysis chamber. Sluice gates are provided between the pyrolysis chamber and the combustion chamber on which the fill of the pyrolysis chamber rests when the gates are quiescent. The gates are moved to allow fragments of the pyrolysis products to drop into the combustion chamber or to turn over material resting on the gates.

Abstract: Sluice gate members mounted for swinging movement about a shaft offset from the center of a furnace and arranged to be moved both gradually and discontinuously are interposed between an upper pyrolysis and precombustion chamber and a lower afterburning chamber. The movement of these sluice gate members causes particles of the fire bed supported on them to drop down into the afterburning chamber, largely in the form of embers, at about the same rate as additional waste material is added to the fire bed, so as to maintain a fire bed of approximately constant size. The sluice gate members are hollow and secondary air is blown into them near the shafts on which they are mounted and flows out through holes on their bottom surfaces and in their facing tip edges and then proceeds downward to contribute to the afterburning process.