ENHANCED ENERGY EFFICIENCY SOLUTIONS FOR INDUSTRIAL BAGHOUSE FILTERS

摘要

Two new technologies for jet-pulse baghouse filters with considerable enhanced energy efficiency (Three E) have been developed. The ProJet mega~E - offline technology combines the annular-gap-coanda injection system with an offline filter operation mode and a filter design optimized by CFD. Due to a reduction of the filter pressure drop and low pressure cleaning, a reduction in energy consumption of 30% has been achieved. The ProJet mega~E - Three E technology with ProTex filter media enables an energy saving of up to 40% for jet-pulse filters in online operation mode. The new Intensiv-Filter ProTex filter media contain microfibres and are optimized with the criterion of minimizing the residual pressure loss as well as the nonlinear increase of the pressure drop curve during the first period after cleaning. Laboratory experiments according to VDI 3926 demonstrate the superior performance data of ProTex filter media compared to conventional needlefelts, conventional microfibre needlefelts and ePTFE membrane media. The Three E operation mode describes a special setting of the operating parameters of the filter system (e.g. cycle time). Validation tests at pilot plant scale show a possible reduction of the pressure difference over the bag plate by a factor of 4 compared to the current standard baghouse filter technology. The huge potential of the Intensiv-Filter Three E technology will be evaluated in field tests in the near future.