GB672495A - Improvements in or relating to centrifugal separators - Google Patents

Abstract

672,495. Centrifugal machines. METALLGES. AKT.-GES. June 28, 1950 [July 8, 1949], No. 16190/50. Class 23 In a centrifuge having two or more chambers D, C in which liquids are brought into contact with one another, solids are separated from any of the liquids in a separate chamber E. Solids collected in the chamber E are periodically removed from' the centrifuge by spraying the chamber, or by removing the chamber and substituting a clean chamber. Alternatively the centrifuge may have two chambers E, one of which is in use while the other is being cleaned. Phenol is extracted by means of butyl acetate from a liquid supplied to the rotary centrifuge 1. The liquid traverses a bore 56 to the chamber E where the separated solids are collected. The clarified liquid is led from the chamber E by tubes 34, a passage 53 and a bore 60 to a mixing and distributing disc 48 in the chamber C. In passages in the disc the liquid is mixed with acetate containing phenol supplied from the chamber D by a bore 59. On leaving the disc the mixture is centrifugally separated in the chamber C, the acetate containing phenol being discharged from the centrifuge through a bore 58, and the extracted liquid being led to a further mixing and distributing disc 51 by a bore 61. The butyl acetate supplied to the centrifuge is led by a bore 57 to the disc 51. The mixture leaving the disc 51 is centrifugally separated in the chamber D, the completely extracted liquid being discharged from the centrifuge by a bore 55, and the acetate containing phenol being led by the bore 59 to the chamber C for further enrichment with phenol. Specification 414,558 is referred to.