Filtration of gases in fluidised beds.

This review concentrates of the fundamental processes occurring in fluidized filters especially when concerned with the removal of gases by filtration. (from paper

Filtration of gases in fluidised beds.

The following review concentrates on the fundamental processes occurring in fluidised filters. Section II gives a brief summary of filtration in fixed granular beds, to define terms and concepts used in analysis of fluidised filtration. Attention is restricted to 'stationary' filtration, in which the collection medium is the granular material itself, without discussing 'non-stationary' effects caused by structural changes resulting from dust accumulation within the filter. Section III sets out an analysis of filtration in a fluidised bed, derived from conventional models of filtration in fixed beds and reaction in fluidised beds. The interpretation of available experimental results in terms of this model is summarised in Section IV. Section V reviews two variations which have been proposed on a simple configuration of: electrofluidised filters, and rotating fluidised beds. Actual and potential applications of the technique are discussed very briefly in Section VI. (from paper

MECHANISMS OF STEADY FILTRATION OF GASES IN PACKED BEDS.

Correlations for the efficiency of removal of dust from a gas by Brownian diffusion, inertial deposition, gravitational settling, and direct interception in a fixed bed of spherical granular collector particles are applied to predicting the performance of a packed bed filter. The results clarify the difference between filtration of sub-micron particles and particles larger than 1 mu m. Filter efficiency is shown to be dependent on operating temperature, with pressure exerting a much weaker effect

Filtration of gases in fluidised beds.

This review concentrates of the fundamental processes occurring in fluidized filters especially when concerned with the removal of gases by filtration. (from paper

MECHANISMS OF STEADY FILTRATION OF GASES IN PACKED BEDS.

Correlations for the efficiency of removal of dust from a gas by Brownian diffusion, inertial deposition, gravitational settling, and direct interception in a fixed bed of spherical granular collector particles are applied to predicting the performance of a packed bed filter. The results clarify the difference between filtration of sub-micron particles and particles larger than 1 mu m. Filter efficiency is shown to be dependent on operating temperature, with pressure exerting a much weaker effect

Filtration of gases in fluidised beds.

The following review concentrates on the fundamental processes occurring in fluidised filters. Section II gives a brief summary of filtration in fixed granular beds, to define terms and concepts used in analysis of fluidised filtration. Attention is restricted to 'stationary' filtration, in which the collection medium is the granular material itself, without discussing 'non-stationary' effects caused by structural changes resulting from dust accumulation within the filter. Section III sets out an analysis of filtration in a fluidised bed, derived from conventional models of filtration in fixed beds and reaction in fluidised beds. The interpretation of available experimental results in terms of this model is summarised in Section IV. Section V reviews two variations which have been proposed on a simple configuration of: electrofluidised filters, and rotating fluidised beds. Actual and potential applications of the technique are discussed very briefly in Section VI. (from paper