Procedure to convey by pneumatic means bulk material along transporting line entails increasing porosity of slugs of bulk material by repeated changing of relative velocity between slugs and transporting gas flowing through them

摘要

The procedure entails the pneumatic feed of bulk material in the form of discrete slugs(5) separated by a gas cushion, the porosity of the slugs being increased at least locally by repeated changing of the relative velocity between slugs and the transporting gas flowing through them. The velocity change is effected by repeated acceleration and deceleration of the transporting gas. The repeated changing of speed of the slugs is carried out in a straight line segment(13) of the transporting line(3). An Independent claim is included for a system for pneumatic feed of bulk material with a transporting line with indentations(14) in the lower section of the flow passage.