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» Personal Loan No Credit Check, Online Economics » Logistics » Topics begins with P » Pneumatic promotion
By pneumatic promotion one understands the transport of bulk materials by air by means of over or negative pressure. The promotion finds principle conditionally meisst by pipes or hoses instead of. Also the promotion over fluid gutters is far common.
Differences become flight, and For suitable bulk materials also flow promotion is possible.
During the flight promotion the conveying speed is so high that the bulk material with little contact is fast blown or sucked to the pressure line by these. In addition high air speeds are necessary. The loading, i.e. the relationship from material to be conveyed to are smaller than 10 kg/kg
The takes place at air speeds of approx. 15 - 20 m/s. A part of the material to be conveyed slips as over the soil of the pipe and of the over-flying particles is propelled. The loading lies within the range 20 - 40 kg/kg.
During the plug promotion the pressure line is so far filled with material that by the one or more material plugs are pushed by the line. Here rather high pressures are necessary instead of high air speeds. There is more possible for loadings of up to 100 kg/kg or. Air speeds move in the context of approx. 3 - 10 m/s and are very strong from the promoted material
During the flow promotion the air solid mixture behaves like a continuum. Highest loadings to 300 or 400 kg/kg are possible. The speeds are with approx. 7 - 15 m/s
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