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    Flocculation
    2.
    发明授权
    Flocculation 失效

    公开(公告)号：US2143750A

    公开(公告)日：1939-01-10

    申请号：US23628238

    申请日：1938-10-21

    Applicant: DORR CO INC

    Inventor： DARBY GEORGE M ,  WEBER WILLIAM C ,  FISCHER ANTHONY J

    IPC: B01D21/00 ,  C02F1/52 ,  F22B1/30

    CPC classification number: F22B1/30 ,  B01D21/0018 ,  B01D21/02 ,  B01D21/06 ,  B01D21/08 ,  B01D21/18 ,  B01D21/2427 ,  C02F1/5281

    Abstract: 537,469. Agitating liquids in flocculating chambers. DORR CO., Inc. Oct. 23, 1939, No. 28484. Convention date, Oct. 21, 1938. [Class 86] [Also in Group I] Agitating blades in a flocculating chamber are arranged with the blade faces at an angle to the direction in which they move and co-operate with stationary blades to deflect the liquid in places at right angles to the normal flow of the liquid through the chamber. In the combined flocculation and settling apparatus shown the liquid is supplied to an inner flocculation chamber 41 through a vertical pipe 7 and apertures 8 and agitated therein by vertical blades 60 on a rotary support. The blades are arranged at an angle to their direction of motion so that they direct the liquid inwardly. The blades 60 pass between stationary vertical baffles 52 which are also arranged to direct the liquid inwards. The chamber 41 and the baffles 52 are supported from a truss 14 extending across the top of the settling tank 1. The rotary support for the blades 60 comprises radial arms, 72, 73, attached to a drum 66 supported by a bearing 68 and rotated by a motor 69. The drum 66 has apertures 22 corresponding to the apertures 8 for the entry of the liquid. The liquid passes from the flocculating chamber to the settling-tank through an annular passage between the outer edge of a plate 46 attached to the pipe 7 and the inner edge of an inclined annular plate 45 which forms a bottom for the chamber 41. Sludge settling in the tank is directed to a sump 12 by scoopers 21 attached to the pipe 7 which is supported by a shaft 27 rotated by mechanism 28.

    Liquid clarification apparatus
    7.
    发明授权
    Liquid clarification apparatus 失效

    公开(公告)号：US2355640A

    公开(公告)日：1944-08-15

    申请号：US44263842

    申请日：1942-05-12

    Applicant: DORR CO

    Inventor： FISCHER ANTHONY J ,  WEBER WILLIAM C

    IPC: A61K8/365 ,  A61Q11/00 ,  B01D21/00 ,  B01D21/04 ,  C02F3/02 ,  C02F3/04 ,  C02F3/12

    CPC classification number: C02F3/121 ,  B01D21/00 ,  B01D21/003 ,  B01D21/12 ,  B01D21/2433 ,  B01D21/245 ,  C02F3/02 ,  C02F3/04 ,  Y02W10/15

    Abstract: 575,827. Clarifying foul liquids. TRIGGS, W. W. (Dorr Co.) Aug. 23, 1944, No. 16091. [Classes 46 and 111] Apparatus for the clarification of polluted liquids comprises a tank having partitioning means the lower edge of which is spaced from the bottom of the tank, so that the tank is divided into two communicating compartments, each compartment having means for the supply and withdrawal of liquid, means being provided for delivering into the second compartment liquid that has been withdrawn from the first compartment and submitted to an additional treatment, and means being provided for withdrawing sediment from the bottom of the tank. In the construction indicated in Figs. 1 and 2, a tank 10 is divided into two compartments 22, 23 by a partition 19 which terminates above the bottom of the tank to leave a space for passage of an endless conveyer 40 provided with scrapers 47 for delivering sediment to a sump 13. Liquid to be treated enters compartment 22 by a feed pipe 6 and is distributed by a launder 25 and baffle 26. At the other end of the compartment is a launder 32 from which liquid flows through pipe 73 to a biologic trickling filter 70. Liquid also flows to the filter through pipe 75 from the outlet'37 of the compartment 23. The filtered liquid is pumped through pipe 82 and valve-controlled pipes 83,84 to the feed pipe 6 and to a launder 30 of the compartment 23. Scum is removed through a slotted trough 58 provided with an adjusting handle 60. In a modification the filter is above the level of the top of the tank and the pump supplies the liquid to the filter. Fig. 7 shows an arrangement in which two filters are used. Liquid from launder 30 is led by a pipe 106 to a well 107 from which it is pumped through pipes 108, 110 to a filter 100. The filtered liquid flows through pipes 101, 102, 103, pipe 103 communicating through pipe 104 with a well 105 from which liquid is pumped to the filter 120. The filtered liquid flows to launder 32. The quantity of liquid supplied to the launder 32 may be larger than that overflowing past the weir 36 whereby a back flow of liquid occurs along the bottom of the tank from compartment 23 to compartment 22, and this facilitates the work of the scrapers 47 on the endless conveyer 40.

    Crystallization
    8.
    发明授权
    Crystallization 失效
    结晶

    公开(公告)号：US2091898A

    公开(公告)日：1937-08-31

    申请号：US67928733

    申请日：1933-07-07

    Applicant: DORR CO INC

    Inventor： WEBER WILLIAM C

    IPC: B01D1/04 ,  B01D9/00 ,  B01D21/00

    CPC classification number: B01D1/04 ,  B01D9/0022 ,  B01D9/0036 ,  B01D9/0063 ,  B01D21/00 ,  B01D21/06 ,  B01D21/2405 ,  B01D21/2427 ,  B01D21/2488 ,  Y10S159/901

    Abstract: In the removal of minor crystallizable constituents or impurities contained in solution in a main solution, the minor constituents being of the kind that show decreasing solubility at increasing concentration of the main solution, the main solution is continuously concentrated within the metastable range of said minor constituents so as not to permit spontaneous crystallization thereof and is then mixed with fresh feed in such proportions that the mixture is supersaturated to such a degree that the minor constituents are precipitated and removed. The process is applicable to the removal from a solution of phosphoric acid of silicofluorides which on concentration of the acid tend to deposit as fluosilicates on the evaporator surfaces. Phosphoric acid solution is circulated continuously through a sedimentation tank 27 and an evaporator 12 at a speed controlled by a valve 37. The solution is concentrated in the evaporator 12 within the metastable range and then passes through a barometric pipe 22 into a vessel 23 to which fresh feed is added through a pipe 24 at a rate controlled by a valve 25 so that the impurities crystallize out in the tank 23. The solution is then pumped to the tank 27 where the crystals settle out and are removed through an outlet 32 and pipe 33, a portion being returned through a line 34 for seeding the solution in the tank 23. The evaporator is provided with a trap 15 and condenser 13.

    Treatment of pulp
    10.
    发明授权
    Treatment of pulp 失效
    纸浆处理

    公开(公告)号：US1770353A

    公开(公告)日：1930-07-08

    申请号：US7332425

    申请日：1925-12-05

    Applicant: DORR CO

    Inventor： WEBER WILLIAM C

    IPC: B01D21/00

    CPC classification number: B01D21/0024 ,  B01D21/0018 ,  B01D21/003 ,  B01D21/0036 ,  B01D21/14 ,  B01D21/186 ,  B01D21/2405 ,  B01D21/2427 ,  B01D21/2444 ,  B01D21/245 ,  B01D21/30 ,  B01D21/34

    Abstract: 262,479. Dorr Co., (Assignees of Weber, W. C.). Dec. 5, 1925, [Convention date]. Separating by gravity.-A settling-vessel 1 is divided into compartments by trays 5, 6 with central depending cylinders 19 for the discharge of the settled matter which forms a continuous column from the top compartment to the bottom of the tank, whence it is withdrawn by a pump 25. The clear liquid passes from the top of the compartments through pipes 26, 27, 28 which lead to an overflow vessel 29, the upper ends of the pipes 26, 27 being provided with adjustable shields 30 to regulate the flow through the pipes. Cylindrical baffles 20 attached to and rotating with rakes 16, which move over the trays 5, 6, prevent the admixture of unsettled liquid with the central column of sludge. The material for treatment flowing from a feed trough 7 is directed by adjustable vanes 9 to the compartments of a vessel 8 which are connected to the several compartments of the settling-vessel 1 by pipes 11, 12, 13. Specifications 13606/14 and 110,188 are referred to.

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