Patent GB-190221384-A (GB)
Title: Improvements in and relating to Apparatus for Separating Grease and Water from Steam and Grease from Condensation Water.
Inventor: PATERSON WILLIAM
Filed: 1902-10-01
Granted: 1903-10-01
Abstract: 21,384. Paterson, W. Oct. 1. Extracting oils; fats and fatty oils.- Relates to the separation of oil, grease, and such like impurities from steam and condensation water, and consists of apparatus for bringing the steam into contact with water films contained in shallow trays, the impurities being floated off and separated by suitable means. In the construction shown in Fig. 1, the steam enters the apparatus by the pipe a and escapes by the pipe a<1>. It impinges upon the ribbed deflecting-plate b<1>, and is cast downwards into the preliminary separator B' where the bulk of the impurities are thrown out. They overflow by the pipe b<2> into the well C of the main separator. From the preliminary separator, the steam passes through the tangential opening b<3> and, receiving a circular motion, casts off the water and oily particles through the peripheral slots C<3> by which they reach the gutter c' and the well C. A pipe C<1> permits of the removal of the impurities. In the arrangement, shown in Fig. 3, for the separation of grease from steam, the steam enters the chamber by the opening a, passes round the baffle b, and zig-zags about the shallow trays D, D<1>, to which water has been supplied by the pipe g, or deposited from the steam itself. After curling round the flange e', the steam escapes by the central duct a'. The floating grease overflows from tray to tray. Modifications in the arrangement of the trays and of the steam passages occur. In Fig. 6, for instance, a double-contact apparatus is shown, the direction of the steam being shown by arrows. The perforated plate h serves as a distributer of steam over the water. With a suitable modification, the direction of the steam is reversed. Fig. 8 shows the application of the grease separator A to the condenser system of an engine. The water supply to the separator is shown as taken in from the tank L by the pipe g which is provided with the ball-cock l<1> or equivalent device. When the water sinks, the cock closes and communication with the separator A is broken. The water supply to the tank may be proportioned to the amount of steam passing through the separator by arranging that the condensation water, as discharged by the air pump P, shall traverse a measuring-apparatus which controls the supply to the tank in a similar manner to that described in Specifications No. 10,719, A.D. 1902, or No. 7170, A.D. 1901, [Abridgment Class Filtering &c.]. Water escapes from the separator to the pump-suction side of the condenser by the pipe c<10> which may be formed with an enlargement or pocket for catching the suspended oil. If desired, a pump may be additionally fitted to the separator. The water, after passing the air pump P, may be filtered in the chamber R after treatment in the tank Q with a coagulant such as alumina ferric, by an apparatus such as is described in Specification No. 6329, A.D. 1899, or No. 10,719, A.D. 1902, [Abridgment Class Filtering &c.]. When space is limited, as on board ship, a medium such as sawdust or charcoal is preferred and, in order to obtain a large filtering-area, the medium is packed between inner and outer casings m', m<5>, Fig. 9, which are supported on shoulders around the outlet aperture m<2>. The inner casing is secured by the fly-nut n<1> and the outer casing by the nut n<3>. To renew the filtering-medium, the caps and nuts are removed, and the casing m<5> raised when the medium is flushed through the waste pipe p or both the casings may be removed together. Several filters may be arranged in one chamber. An air vent is provided at p<1>.