Abstract: A process and device separate off a volatile component from the off-gases in cement clinker production. Raw materials for cement clinker production are passed through a preheater with heat exchange with the off-gases and are then burnt in a rotary kiln. Owing to the heating in the preheater, the volatile component bound in the raw materials is vaporized and separated off. A first raw material stream having a relatively high concentration of the volatile component is applied to a first line of the preheater and a second raw material stream having a lower concentration of the volatile component is applied to a second line. The volatile component is separated off from the first substream of the off-gases. The first raw material stream heated to a temperature of at least 250° C. with the first substream of the off gases in the first line is combined with the second raw material stream.

Abstract: A process and device separate off a volatile component from the off-gases in cement clinker production. Raw materials for cement clinker production are passed through a preheater with heat exchange with the off-gases and are then burnt in a rotary kiln. Owing to the heating in the preheater, the volatile component bound in the raw materials is vaporized and separated off. A first raw material stream having a relatively high concentration of the volatile component is applied to a first line of the preheater and a second raw material stream having a lower concentration of the volatile component is applied to a second line. The volatile component is separated off from the first substream of the off-gases. The first raw material stream heated to a temperature of at least 250° C. with the first substream of the off gases in the first line is combined with the second raw material stream.

Abstract: A metering device for metering additives into treatment liquids of a vehicle treatment installation includes an exchangeable storage container and a metering pump connected to the storage container, said metering pump metering an additive contained in the storage container into the treatment liquid. The metering device according to the invention comprises an integrated storage tank which communicates with the metering pump and with the storage container, thereby removing the need for a complete evacuation of the storage container and allowing the timely and easy exchange of a completely evacuated storage container without having to shut the vehicle treatment installation down to replace an evacuated storage container for a filled storage container.

Abstract: The invention relates to a nozzle arrangement for a vehicle washing installation, a vehicle washing installation equipped with this nozzle arrangement, and to a method in which a drying nozzle (1) that can be rotated about a longitudinal axis (7) by a motor and two high-pressure hoses (2a, 2b) parallel to the longitudinal axis (7) are provided with several high-pressure nozzles (13a, 13b) for high-pressure cleaning. The high-pressure hoses (2a, 2b) are supported so that they can rotate about their longitudinal axes (8a, 8b) according to the invention and coupled to the drying nozzle (1) for common adjustment by means of a mechanism (14, 15a, 15b, 16; 17a, 17b, 18a, 18b).