About this machine

This Gerhard+Rauh GmbH extraction column — sometimes referred to as a liquid-liquid extractor — is a mixer and blender designed for continuous countercurrent extraction processes, in which two immiscible liquid phases are brought into controlled contact to transfer target compounds from one phase to the other. Gerhard+Rauh GmbH is a German manufacturer with a long-standing reputation for building process equipment, including extraction columns and mixing systems, for the chemical, pharmaceutical, and fine-chemical industries.

This particular unit is a type RZE counterflow column, serial number 6321, built in 1996 and currently located in Barneveld, Netherlands. The column shell measures 700 mm in diameter with an overall footprint of 12.1 × 1.2 metres and a total height of 1.0 metre. The main vessel has a volume of 3,600 litres and a process capacity of 4,000 litres; with the jacket included, the jacketed volume is approximately 3,640 litres. The column carries an identification of DN 900/700, reflecting the nominal diameters associated with its construction.

Constructed entirely from stainless steel grade L), the column offers excellent resistance to aggressive media including chloride-containing and acidic process streams, making it well suited to demanding chemical applications. The working pressure is rated at 1 bar, and the unit is additionally capable of operating under vacuum down to -1 bar, giving process engineers flexibility across a range of pressure conditions. Maximum operating temperature is 95 °C.

The column is fitted with an internal rotor and is supplied complete with its agitator and drive unit, which features a variable speed drive, allowing operators to adjust rotor speed to optimise the extraction performance for different solvent systems and throughput requirements. The drive motor is of explosion-proof (Ex) specification, making the machine suitable for use in environments where flammable solvents or vapours may be present. The machine is offered used and is available for inspection in the Netherlands.

This description was generated automatically from the listing details and may not reflect every specification. Please confirm with the seller before purchase.