Download Operating instructions - Air Compressor

Product description
2.3
BLUEKAT operation principle
2.3 BLUEKAT operation principle
The screw compressor SLF 40 BLUEKAT is equipped with an integrated converter for catalyctic separation of oil residues contained in the compressed air.
During the oxidation process, the converter serves to break up residual oil particles from the air compressed by the compressor into carbon dioxide and water. The treated compressed air is classified as oil-free (class 0) according to
DIN ISO 8573-1.
Compressor control
Converter control
Compressor
Converter
Fig. 2.3: Overview BLUEKAT: compressor (gray section) with integrated converter
As for the screw compressor BLUEKAT, the converter is installed downstream
of the compressor. Prior to the oil separation process the compressed produced by compressor (1) is first heated up in plate heat exchanger (2) (see figure below).
After escaping from the plate heat exchanger the heated compressed air is fed
into converter (3) which is filled with catalytic material. The catalytic material is
kept at operating temperature (200 °C) by means of an electrically powered
heating. At the same time the heating also heats up the incoming compressed
air. Due to the heat build-up the oil particles in the compressed air are able to
react with the catalytic material. When impacting on the catalyst surface the oil
particles (hydrocarbons are completely burnt (oxidized).
The heated oil free compressed air is fed back to plate heat exchanger (2) after the treatment process. While being in the plate heat exchanger it releases
part of its heat energy to the compressed air (still to be treated) flowing from
the compressor into the plate heat exchanger which is now able to heat up prior to the oxidation process while the already treated compressed air cools off
at the same time. In order to further cool off it is then fed into aftercooler (4).
The compressed air escapes at a temperature of 30 – 35°C and can be fed
into a compressed air receiver for further use. The condensate which is built
up in the compressed air receiver conforms to industrial water quality and may
be discharged accordingly.
BOGE Operating instructions for screw compressors series SLF 30...SLF 125
Page 17