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    • 7. 发明专利
    • BE850859A
    • 1977-07-28
    • BE174468
    • 1977-01-28
    • SHAFRANOVSKY ALEXANDR VOLEVSKY VIKTOR MCHUBUKOVVLADIMIR KBASKOV JURY A
    • B01D1/22B01D3/10B01D3/30B01D47/12B01D47/16B01D53/18B01J10/02B01J19/18B01J19/32F28C1/02F28C3/06B01J
    • 1532941 Gas/liquid contact apparatus A V SHAFRANOVSKY V M OLEVSKY V K CHUBUKOV and J A BASKOV 14 Jan 1977 01582/77 Headings B1F and B1R [Also in Division F4] In gas/liquid mass and heat exchange apparatus, e.g. contacting nitrogen oxides with water with the resultant formation of nitric acid, comprising a cylindrical casing 1 housing a rotatable shaft 7 carrying a plurality of spaced apart gas/liquid contact units 8 each in the form of flanged bands 9 spirally wound about the shaft 7, with each unit 8 being surrounded by an annular trough 13 for collecting liquid discharged centrifugally outwardly therefrom, the collected liquid is transferred from one unit 8 to the next unit 8 by means of an overflow pipe arrangement 14 the inlet end 15 of which communicates with the annular collector trough and the outlet end 20 of which is arranged to deliver the liquid onto the spiral surface of the next unit 8. A portion of the collected liquid in trough 13 may be recirculated back to the associated contact unit 8 for further passage therethrough via a pipe 22 having an inlet end 24, outlet end 23 and a valve 25 to control the amount of liquid recirculated. A series of movable partitions 21 connected to a spindle 26 at the periphery of the units 8 and rotatable therewith are arranged to extend into the annular troughs 13 to impart movement to the liquid collecting therein. As shown the shaft 7 is disposed vertically within the casing, and liquid, before being distributed to the last contact unit 8, may be cooled in an external heat exchanger 27. In an alternative embodiment (Figs. 3-6 not shown), the shaft (29) is mounted horizontally and the bottom of the annular collection trough (35) communicates with an external chamber (40) located above the casing axis through an inlet opening (44) in its upper part, said chamber having an outlet opening (45) in its lower part communicating with the inlet end (46) of an overflow pipe (37) disposed in the space between adjacent contact units, the outlet end (47) of the overflow pipe is provided with two discharge pipes (48, 49) extending from opposite sides thereof, whereby part of the collected liquid may be recirculated to the same contact unit and part may be supplied to the next unit on the shaft.