Improvements to the separators of oil and water

摘要

735,130. Gravity separation apparatus. SILLEY, H. A. J., and UNTHANK, G. R. Dec. 30, 1953 [Jan. 8, 1953], No. 646/53. Class 46. Oil is separated from water in a tank having a primary partition 14, Fig. 3, which forms with one or more side walls 10-13, Fig. 1, of the tank a passage 24 open at the bottom edge 15 of the partition 14 near the tank bottom and which provides at the upper edge 16 a weir over which water flowing up the passage 24 passes to a discharge duct 22; the mixture being introduced into the upper .part of the tank through a channel 25 and the separated oil collecting at the upper part of the tank being discharged through a box 30 and conduit 31. Each longer wall 10, 11 of the tank is associated with two separate primary partitions 14 forming passages 24 and each partition 14 is associated with secondary and tertiary partitions 17, 18 to form passages 19, 21 having closed bottoms and being connected by ducts 20. Water from a passage 24 flows over the upper edges of partitions 14, 18 to the passage 19, 21 and is discharged therefrom through a duct 22 into a trunk 23 outside the adjacent end wall of the tank. The inlet 25 has a sloping bottom and the mixture flows over weirs 26 on to oilcollecting baffles 28 having slots 29 near to and perforations remote from said inlet channel. Flow of oil to the boxes 30 which are adjustably pivoted about the ducts 31 is assisted by water from nozzles 35 and oil vapour is confined by water sprayed from nozzles 36. Two, or more tanks having a common inlet and common water and oil discharge trunks may be arranged in parallel. Also a single tank may comprise only one primary partition and one secondary partition which co-operate with all the walls of the tank. Specification 721,212 is referred to.