Andritz-patentverwaltungs-gesellschaft M.b.h.

Sep Gesellschaft Fur Technische Studien Entwicklung Planung Mbh

Wme Gesellschaft Fur Windkraftbetriebene Meerwasserentsalzung Mbh

Ulrich Plantikow

Rainer Huss

Dieter Kowalczyk

Peter Gaiser

Detlef Wusthoff

Herbert Clemens

The invention relates to an evaporator tube for a sea water desalination system, whereby drinking water or water for domestic or industrial purposes, respectively, is extracted from the sea in particular in areas having scarce fresh-water resources. The evaporator tube of the invention is characterized by being formed of a steel that is sea water resistant and at the same time acid resistant, and by having a wall thickness between 0.1 mm and 0.5 mm. The evaporator tube of the invention may be furnished and utilized economically, and is characterized in particular by a high corrosion resistance at good heat transition owing to the thin wall, and by good resistance against low pH values. In addition, scaling on the evaporator tubes may reliably be prevented. It is therefore also suited for economical operation in intermittently operated sea water desalination systems such as, e.g., wind energy-powered sea water desalination systems.

Evaporator tube for a sea water desalination system

A process and a device for continuously drying protein-containing sludge, in particular sewage sludge, in a fluidised bed ( ) inside a drying container ( ). A drying gas flows through the fluidised bed ( ) while partially de-watered sludge ( ) in granulate form ( ) is added to the fluidised bed ( ) while dried sludge ( ) is withdrawn therefrom. The granules ( ) are formed without admixture of dried substances and are granulated preferably at the same time as they are pressed. Sewage sludge may thus be dried without admixture or recycling of dried substances, so that a highly efficient plant is obtained. In addition, a granulated dry material is produced which may be used in various ways.

Process and device for continuously drying protein-containing sludge

A compression refrigeration machine is provided having ammonia as a refriant and including a condenser, a throttle device, an evaporator device, and a motor-compressor unit. The motor compressor unit includes an electric motor that drives a compressor and may be arranged in a semi-hermetic or hermetic encapsulation. In an hermetic encapsulation, the electric motor is located outside a suction gas stream flowing into the compressor and outside a discharge gas stream exiting from the compressor so that the electric motor is only exposed to an essentially static ammonia atmosphere. The motor-compressor unit and the semi-hermetic encapsulation are composed of materials stable or resistant to ammonia.

Compression refrigeration machine

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Munich, Germany

Ulrich Plantikow