US1723329A - Apparatus and process for preventing contamination of centrifugallypurified liquids - Google Patents

Apparatus and process for preventing contamination of centrifugallypurified liquids Download PDF

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Publication number
US1723329A
US1723329A US79817A US7981726A US1723329A US 1723329 A US1723329 A US 1723329A US 79817 A US79817 A US 79817A US 7981726 A US7981726 A US 7981726A US 1723329 A US1723329 A US 1723329A
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Prior art keywords
liquid
gas
casing
liquids
vessel
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Expired - Lifetime
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US79817A
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English (en)
Inventor
Chadburn William Roy
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De Laval Separator Co
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De Laval Separator Co
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B15/00—Other accessories for centrifuges
    • B04B15/08—Other accessories for centrifuges for ventilating or producing a vacuum in the centrifuge

Definitions

  • This invention relates to centrifugal liquid puriliers and is mncerned with the degassing and stahilizing of the liquid treated in such nnichines.
  • centrifugal purifiers are used tor separating solids from a liquid and for separating two liquids mixed together.
  • the purified liquid is ordinarily continuously leaving the centrifugal howl and passes into a statioiniry casing or receiving pan generally placed around the centrifugal howl, from wuich casing it passes out of suitahly disposed spouts into the collecting vessels placed to receive it.
  • statioiniry casing or receiving pan generally placed around the centrifugal howl, from wuich casing it passes out of suitahly disposed spouts into the collecting vessels placed to receive it.
  • the liquid tends to become highly aerated.
  • the liquids are generally very linely divided and pass to the cars ing in the form of a spray. It is evident that during this 1 assage the liquid will he in the host condition to ahsorh or gases. It should turther he noted that when the liquid or liquids leave the using, a greatamount of gas or gases is mechanically mixed into the liquid, and 'l'urcher that the rotating centrifugal howl will cause some pressure in the cars ing. For this latter reason, a great amount o't air leaves the casing or tinware through the outlet spouts. In many cases, this air contains a suhstautial volume of the liquid in a finely divided condition.
  • Fig. 1 is a view, in side elevation, and some what diagrannnatic, 01 a centri'lfugal apparatus provided with means for carrying out certain of the processes herein described.
  • Fig. is a similar view of a n'ioditication.
  • Fig. 3 is a similar view of another modil'i ca ti on.
  • Fig. is a sectional elevation oil proved collecting vessel.
  • Fig. 5 is a cross-section of the collecting vessel shown in Fig. l. l
  • Figure 1 shows the simplest form of the invention, In. this 'ligure the centrifugal bowl 1 is rotating in a :lrame 2.
  • the separator howl is assumed to he one provided with a single outle The liquid leaves the howl in a lincly divided state and collectingin the casing. 3, provided with an outlet spout 4:.
  • the liquid to he treated is delivered to the centri'liupgil howl through a pipe S, prelcrahly under a slight pressure head, wlnch may he obtained hy means of an elevated tank.
  • 'lhe centrifuge is 'i 'urther connected to a reservoir 7 hy a pipe line 6, the reservoir containing, suitahly under high n'essure, the gas which to he ahsorhml hy the liquid.
  • the pipe line (3 is connected directly to the casing 3, a preferable hut not necessary arrangen'ient, since the gas to he introduced into the system may he delivered at other positions so long as precautions are taken to insure that the gas supply can pass to the casing 3.
  • the pipe line (5 is provideiil with a valve 8 by which the gas supply can he regulated.
  • This valve is suitahly of such a design that it will automatically keep a suitable over-pressure in the stationary casing. In starting the operation, it is, of course, necessary, or at least desirable, to at first replace the atmospheric air in the system hy the desirable gas.
  • FIG. 2 shows a suitable term of one such arrangement.
  • the design differs from that shown in Figure 1 in the following respects.
  • the outlet spout at is connected to a collecting vessel provided with a delivery pipe 11.
  • the collecting vessel 10 is suitably provided with means automatically maintaining the liquid level at a suitable heigh 1. According to the drawing, this is effec ed by means of a liquid seal, but, of course, other known regulating means can be used.
  • a vacuum pump 12 is provided for withdrawing theatmosphere in the system when startin Dun ing this air-exhausting period the valve 8 in the pipe line 6 and the valve 13 in the pipe line 11 should be closed. As soon as a vacuum indicator shows a sufliciently low pressure.
  • the pipe line 1 L connecting the vacuum pump with the centrifuge is provided with a valve 15, by which the pum p may be shut oil", when the dc- :ired degree i vacuum has been established. if a repeated air-withdrau'al operation is necssary, the valve 15 preferably cloed in ordnto prevent the desirable gas from being immediately sucked out.
  • the valve to is prcforably made automatically shut the pump from the system as soon as the dili'erence between the atmospheric pressure and the absolute pressure in the system has reached a certain degree.
  • rho system is completely filed with oil, which is then drawn away from the tem at the lowest point, at the same time allowing the desirable gas to flow into the sys tem.
  • This method can be used when treating, for instance, a lubricating oil.
  • the frame in order to prevent air from being sucked into the system during the evacuation period and for economizin g with gas during the separation, the frame preferably completely closed. Bushings, from which shafts are protruding, are for this reason provided with packing bones.
  • the drain pipe at the bottom of the bowl frame which in ordinary parators carries away liquid dripping down from the tinware, must also be closed. When using only a small pressure in excess of atmosphere, this pipe can be dosed by a liquid seal, but when using higher pressure there should be provided other mechanical devices which allow the collected liquid to escape continuously butprevcnt the gas from leaking out to the surrouni'ling atmosphere.
  • thevalvcs and 13 are opener] and liquid is fed into the separator. "lhe separated liquid is then led to the collecti vessel 10, from which it is delive red to another CORP tainer as soon as the level in the vcsse' has reached a certain height. During the time the liquid is lrept in the vessel it), the mechanically enclosed gas apes from the liquid and collects in the vcss l above the liquid level.
  • FIG. 3 shows an arrangement, which suitably can be used for such purposes.
  • the compartment 17 is connected to a collect- .ing vessel 18, which suitably is of the same construction as the vessel 10in Figure 2 and is provided with similar means for regulating the liquid level.
  • the pipe line and the collecting vessel are connected together above the liquid level in the vessel, the separated out in the vessel can be brought back to the connaartments oi. the easing through the same pipe line.
  • pipe lines are connected to the collecting vessels below the liquid surface, special pipe lines, such as 16 in Fig. 2, must be arranged in order to bring the gas, separated in the vessels, back to the con'ipartments 3 and 17 of the tinwarc casing.
  • Fig ures i and 5 are illustrated in order to reduce the dimensions of the collecting vessels when using separators of great capacity.
  • Fig ures i and 5 may be assumed to illustrate a collecting vessel which may be substituted for the vessel 10 of Fig. 2 or the vessels 10 and 18 of Fig.
  • the liquid is conducted to a compartment 21 oi the collectin vessel lUt). From the com partment 21 the liquid flows through a number of thin layers formed by partitions 22 in the main part of the vessel. If these partitions form angles with a vertical line, the effect is highly increased.
  • the gas bubbles coming into the tank at the bottom, must pass through a. considerable depth oi.
  • an absorptiondevice for the undesirable gas should be provided in some part of the system.
  • the from the separating vessels should be carried away to a container, which may be connected to the pipe line delivering the inert o desirable gas to the system.
  • the container between the separating vessel and the pipe line is, of course, not absolutely necessary.
  • an absorption device is suitably placed. Should a complete saturation be desired. but found unobtainable in one single operation, it is of course necessary to repeat the treatment, and this can be effected by means of a pinup operating to withdraw the liquid from the separating vessel and deliver it to a tanl: connected to the centrifuge by the pipe line l. After some time this ilr will contain a liquid freed from solid impurities, and at the same time this liquid will be saturated with desirable gas.
  • a treatment of the above described kind is suitable for many purposes.
  • lt is, for in stance, possible to replace oxygen, absorbed by lubricating oils, transformer oils, or vegetable oils, by inert gases, such as carbonic acid or nitrogen, in order to prevent changes in the composition of the oils.
  • inert gases such as carbonic acid or nitrogen
  • the process which comprise. displacing air in the receptacle with a neutral gas, centrifugally purifying the liquid and discharging it into the body of neutral gas in the receptacle, conveying the liquid mixed with the neutral gas to a different locus and there separating neutral gas from the liquid, and returning the separated neutral gas to the receptacle along a pathindependent of the paths of flow of the liquid and neutral gas to and from the receptacle.

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  • Physical Or Chemical Processes And Apparatus (AREA)
  • Centrifugal Separators (AREA)
  • Degasification And Air Bubble Elimination (AREA)
US79817A 1925-01-27 1926-01-07 Apparatus and process for preventing contamination of centrifugallypurified liquids Expired - Lifetime US1723329A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2404/25A GB252421A (en) 1925-01-27 1925-01-27 Improvements in centrifugal liquid purifiers

Publications (1)

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US1723329A true US1723329A (en) 1929-08-06

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US79817A Expired - Lifetime US1723329A (en) 1925-01-27 1926-01-07 Apparatus and process for preventing contamination of centrifugallypurified liquids

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US (1) US1723329A (fr)
FR (1) FR610100A (fr)
GB (1) GB252421A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2584424A (en) * 1952-02-05 Method and apparatus for treating
US2779536A (en) * 1952-02-15 1957-01-29 Dorr Oliver Inc Anti-foaming centrifugal methods and apparatus
US3640452A (en) * 1968-10-14 1972-02-08 Alfa Laval Ab Centrifugal separator
CN102139247A (zh) * 2010-12-16 2011-08-03 中国科学院高能物理研究所 无氧自动连续离心过滤机
CN102280609A (zh) * 2011-07-04 2011-12-14 曙鹏科技（深圳）有限公司 电池注液装置及注液方法

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2584424A (en) * 1952-02-05 Method and apparatus for treating
US2779536A (en) * 1952-02-15 1957-01-29 Dorr Oliver Inc Anti-foaming centrifugal methods and apparatus
US3640452A (en) * 1968-10-14 1972-02-08 Alfa Laval Ab Centrifugal separator
CN102139247A (zh) * 2010-12-16 2011-08-03 中国科学院高能物理研究所 无氧自动连续离心过滤机
CN102280609A (zh) * 2011-07-04 2011-12-14 曙鹏科技（深圳）有限公司 电池注液装置及注液方法
CN102280609B (zh) * 2011-07-04 2013-09-18 曙鹏科技（深圳）有限公司 电池注液装置及注液方法

Also Published As

Publication number Publication date
GB252421A (en) 1926-05-27
FR610100A (fr) 1926-08-30

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