| 摘要 |
955,804. Washing gases; centrifugal separators. NATIONAL ENGINEERING CO. OF CANADA Ltd. July 19, 1960 [July 27, 1959], No. 25194/60. Headings B1R and B2P. A dust-containing gas from an inlet 20, Fig. 1, is passed together with an unfoamed foamable liquid from a nozzle 32 through a foraminous plate 34 into a chamber 6 to form therein a bed of foam which removes the dust from the gas, the mixture of foam and gas passes downwardly into a lower chamber 18 containing a rotating drum 40 which breaks up the foam by centrifugal action, the defoamed liquid being withdrawn through an annular gap between the drum 40 and an outer casing 41 and the washed gas through an outlet 58. The drum 40 is mounted on and rotated by a shaft 42 and contains a series of spaced vertical plates 51 which extend radially inwards from the shell of the drum. The foraminous plate 34 may have cylindrical bores as shown in Fig. 5 or comprise spaced foraminous plates as shown in Fig. 6. In a further modification the plate may be replaced by a nest of vertical tubes which are vibrated to assist in forming the bed of foam.
|
