Cryogenic equipment

Paddle Screw Cooler

In the paddle screw cooler, granulates or powders are cooled up to
-196℃ by liquid nitrogen. This cooler type is normally used for cold grinding processes. Here, tough, elastic or temperature sensitive materials such as thermoplastics, elastomers, spices, pharmaceutical products or waxes can be cooled.

Coolers are available with capacities from about 50 to 3000 kg per hour. Typical gas requirement is from 0.5 to 2.0 kg/kg product.

Cryogen Control Valve Unit for Liquid Nitrogen
In a cryogen control valve unit, the dosage of liquid nitrogen is regulated in accordance with a 4-20 mA signal. A control valve is mounted on a stainless steel frame, together with safety valves, manometers, a dirt trap and an evaporator coil for captive medium supply. If required, it can also be supplied with a solenoid or membrane valve as an open/close valve. The unit is also available in a stainless steel cabinet with viewing windows.

The unit is normally constructed in a DN15 and a DN25 version.

Vacuum Insulated Pipe

A flexible pipe for nitrogen (3 to 5 m) between control unit and paddle screw cooler is also available.