Bevel-helical gearbox B3 mounted pumpLSS GMDENd sl h f p m bh h cf p E ann B3-VV-16B

Flender/Flender Gear Units/Bevel-helical gearbox B3

order to operate granugr bed filter, the cleaning of the filter medium, in articular, must also be clarified Further fundamental investigations are necessary to this en8 3. Results For the first time, systematic measurements of the degree of separation in the particle size range between 0.0 [MCrIm and 1 [MCrIm were conducted as function of important filtra- tion parameters at room temperature. By var ing the different influencing variables in wide range, optimum operating conditions were Jetermined for particle separation, which should also be applicable at high temperatures. From the oint of view of both separation and pres- sure lossand,thus, energy consumption,filtration slould be performed at lowfiltration speeds (,<.IO /) and with small collector diameters (,< 0.5 mm). Under these operating condi- tions, dense dust deposit forms on the inflow side of the filter which leads to outstanding separation in the entire particle size range. In addition to particle separation, the regeneration of the filter medium is also of decisive importance for the trouble-free operation of granular bed filter. No investigations have been conducted to date in this context. It is, however, conceivable that regeneration of the granular bed could take place outside the filter housing, as is already practised in several fields of appli- cation. pilot-plant which can be operated at temperatures of up to 8C was constructed for the investigations as function of temperature. In order to measure the degree of separation of different fractions as function of temperature, nephelometer developed at the Institute was to be used and operated for the first time at temperatures of up to 8C. The construction of this instrument was, however, delayed, meaning that no measurements of the degree of sepa- ration at high temperatures could be performed to date. The investigations into the sorption of gaseous pollutants showed that granular bed filters can also be used eff