Vorrichtung zur Behandlung von feinteiligen Stoffen mit Gasen

摘要

In a continuous method for contacting finely divided particles, e.g. starch, with a gas, e.g. anhydrous hydrogen chloride, a stream of the particles is conveyed through a confined contact space containing the gas and having an inlet and outlet arranged so that they are continuously filled with the particles to prevent escape of the gas. Particles are fed from a belt 41 (Fig. 1) to a conveyer 10 having a floor 11 and sides 12, which is mounted on a carrier 13 vibrated by an eccentric 19, carrier 13 being supported on flexible struts 28. The vibrations cause the particles M to flow from right to left, passing through a chamber 32 filled with gas supplied by diffuser 39. The conveyer floor 11 has V-shaped transverse depressions 35 and 351 below end walls 34 and 341 forming an inlet 36 and an outlet 37. The particles flow down into and up out of depressions 35 and 351 filling inlet 36 and outlet 37. Dust formation at openings 36 and 37 is eliminated by flanges 38 and 381. The floor 11 has transverse protuberances 27 which mix the stream of particles to ensure uniform contact with the gas. Carrier 13 is in the form of a channel and conducts material discharged from conveyer 10.ALSO:In a continuous method for contacting finely divided particles of starch with anhydrous hydrogen chloride, a stream of the particles is conveyed through a confined contact space containing the gas and having an inlet and outlet arranged so that they are continuously filled with the particles to prevent escape of the gas. Particles are fed from a belt 41 (Fig. 1) to a conveyer 10 having a floor 11 and sides 12, which is mounted on a carrier 13 vibrated by an eccentric 19, carrier 13 being supported on flexible struts 28. The vibrations cause the particles M to flow from right to left, passing through a chamber 32 filled with gas supplied by diffuser 39. The conveyer floor 11 has V-shaped transverse depressions 35 and 351 below end walls 34 and 341 forming an inlet 36 and an outlet 37. The particles flow down into and up out of depressions 35 and 351 filling inlet 36 and outlet 37. Dust formation at openings 36 and 37 is eliminated by flanges 38 and 381. The floor 11 has transverse protuberances 27 which mix the stream of particles to ensure uniform contact with the gas. Carrier 13 is in the form of a channel and conducts material discharged from conveyer 10.