US888638A

US888638A - Apparatus for electrical separation of particles from a fluid stream.

Info

Publication number: US888638A
Application number: US30779906A
Authority: US
Inventors: Lawrence N Morscher
Original assignee: WILLIAM J EHRSAM
Current assignee: WILLIAM J EHRSAM
Priority date: 1906-03-24
Filing date: 1906-03-24
Publication date: 1908-05-26
Anticipated expiration: 1925-05-26

Description

. PATENTED MAY 26, 1908. L. N. MORSGHER. APPARATUS FOR ELECTRICAL SEPARATION OF PARTICLES FROM A FLUID STREAM.

APPLICATION rum) 11.13.24, 1906.

2 SHEBTS-SHEET 1.

:lllllllllh No. 888,638. PATBNTED MAY 26, 1908.

L. N. MORSGHER. APPARATUS FOR ELECTRICAL SEPARATION OF PARTICLES FROM A FLUID STREAM. APPLICATION FILED MAR. 24, 1906.

2 SHEETS-SHEET a.

l i lll l umbo z I awrezzr 2/7? 1% 75 C er I Wane MM PATENT OFFICE. i

- LAWRENCE N- oRscnER, F ENTERPRISE, .KANsas'AssIeNoR TO WILLIAM L HRSAM AND LAWRENCE N. MoRsonER;oo' rRUs'rEEs, 0F ENTERPRISE, KANSAS.

' To all whom it may concerns Be it known that I, LAWRENCE N. MOR-' APPARATUS FOR ELECTRICAL SEPARATION OF PARTIcLEsrRom A mma STREAM.

soHER, a citizen of the United States, residmg at Enterprlse, in the county of Dickinson and State of Kansas, have invented certain new and useful Improvements in Apparatus for Electrical Separation of Particles from a Fluid Stream, of which the following is a specification. 1

The object of my invention is to produce an apparatus .for the separation of particles from a poorly conductlng fluid streannby drivingthe particleladen fluid-stream through the electrical field between two opposite members charged with high potential.

of opposite signs, one of said members being adapted to discharge readily while the other member is arranged to prevent discharge as far as possible, and providing 'means for catching the repelled particles in such manner as to remove them from the influence of the electrical field, the velocity of the par: ticle-laden fluid-stream'and the arrangement of the particle-arresting members'b'eing such as to ractically prevent the charged and re,- p'elled particles from contacting with the non-discharging member. I I The accompanying drawings'illustrate my invention: p

.Figure 1 is a plan of an apparatus embodying my invention; Fig.2 a partial vertical section thereof; Fig. '3 a plan'of a modified form, and Fig. 4 a vertical section on line: 44 of Fig. 3..

In order to accomphsh desired results. I

provide a chamber 10 which is preferably I substantially circular in cross section and has a circular wall 11 of conductingmaterial such, for instance, as sheet iron. Leading into chamber 10 is a tangentiall arranged induction passage 12 through w 'ch the particlel-aden fluid-stream is driven at a considerable velocity. The top 13 of the chamber is formed preferably of a non-conducting material, and is provided with a central eye '13' The eye 13 is extended into the chamber 10 by means of a cylinder 1 4 which is preferabl. o conducting material. Projected throug the cylinder 14 is an. insulatingtub'e '15 suitably supported-by bracket 16 and projected through the tube 15 is a wire 17 connected 'with a suitable source high potential P grounded at G; The inner end of the conductor 17 is connected to a'conductor 18 which is preferably a reticulated dlSk having- Specification of Letters Patent;

-Applica'tion filed March 24,1906. Serial No. 307,799.

. Patented May 2c, 1908.

final diameter of thechamber 10 and presentlng a shar edge or a ringofsharp points to the inner ace of'the wall 11. The wall 11 is grounded.

In the form shownin Figs. and 2 the chamber 10 is rovided with a hopper bottom 19 which ischarges into a sultable receiver 20. In the form shown in Figs. 3 and 4 the bottom-21 of the chamber is flat and is adapted to be swept by brushes 22 which are carried by arms or disks 23 carried by a shaft 24 j ournaled in the'b'ottom 21 and adapted to sweep the bottom 21 mtoadischarge stop 25.

v In operation, the discharging electrode 18 is given. a charge of high potential and this will induce in the wt} 11 a charge of high potential of the: opposite sign. The article laden: fluid stream, such as dustaden air or gas forinstance, is then driven through the passage 12 into thechamber 10 thus setting up 'a-cyclonic action in a well understood ma er.- This action has a normal tendency to cause a separation of the particles from the flui stream by centrifugal action, but, where the-\particles are hght and fine, a good separation can not be .accomplished in this manner alone. When the parts are electrically charged in the manner described, however, the I articles are violently repelled downwar through the reticulated-con uctor 18 and dropping either into the insulated hopper 19 or upon the insulated floor 21from whence they are removed from the electrical field,

the cleaned fluid-stream gassing outwar from the chamber 10 throu the annulus 14. The guard 14 gradually ac uires apotentlal assing easily approximating that ofthe ielectric bathing it, and therefore the' dust does not cling to this guard but drops into the hopper.

I have found by experiment that where an electrical field is established between'two parallel surfaces of considerable area and a particle-laden fluid-stream is passed between such char ed conductors man of the line and very buoyant particles W11 be set into violent vibration and will not-be readily sep-' arable from the fluid stream. If however,

one of the conductors be directed toward a de ression in the other conductor. the violent vi rations of the particles is eliminated. In the form shown in the drawings it will be noticed thatany given ortion of the edge of the dischar'glng con uctor 18 is directed into, said chamber also having tion passage leading therefrom.

toward a cupped portion of the conductor 11 and experiments show that in such form the particle separation is accomplished, with great efliciency. It will be readily under-;

stood that the circuits may be reversed so that the induced charge is on the conductor 18, but I prefer the arrangement shown.

I claim as my invention:

1. An apparatus for separating particles from aflui stream comprising, a pair of electrodes to be electrically charged at different potentials and arranged one within'theother to form an annular separating chamber -having aninduction' assage leading tangentially thereinto, sai chamber also having a fluid-eduction passage leading therefrom.

2. An a from a fiUl stream comprising, a pair of electrodes to be electrically charged atdiiferent potentials and arranged one within the other to form an annular separating chamber having an induction passage leading therea fluid-educent potentials and arranged one within thev other with an annular separating chamber pgaratus for separating particlesin the field of said electrodes having an induc-:

tion also aving a fluid-eduction passage leading therefrom, and a non-charged member arranged to receive the precipitated particles.

passage leading thereinto, said chamber 5. An apparatus for separating particles from a flui stream comprising a chamber having a wall concave in one plane and an electrode adaptedto be electrically charged at high potential, a reticulateddisk electrode arranged within saidchamber substantially in its plane of concavity and adapted to be electrically charged at high potential and discharging to the concave wall, said chamber having an inlet assage and an eduction passage, and non-c argeable means for receiving the precipitated particles.

6. An ap aratus for separating particles from a flui stream comprising: a chamber having a wall concave in one plane and of material capable of being electrically charged at high otential, areticulateddisk electrode adapts to be electrically discharged at high potential and arrangedwithin said chamber substantially in itsplane of concavity, and

discharging to the concave wall, said chamber having an inlet passage and an eduction passage.

7 An ap from a fluid tially cylindrical chamber, the cylindrical wall whereof is an electrode adapted to receive an electrical charge of high otential, a tube of less diameter than the c amber araratus for separating. particles ofmaterial capable of receiving an e ectrical charge at hi h potential, and an electrode arranged withm the chamber outside the inner tube and insulated from the first-mentioned trode beingadapted to receive an electrical charge of high potential. .2.

from a flui mass comprising aseparating chamber having an induction passage leading tangentially thereinto, and means for maintaining an electrostatic discharge field within said chamber. I

from a flui stream comprising a substantially cylindrical chamber, the cylindrical \wall whereof isan electrode adapted to receive an electrical charge of high potential,

tion 0 eningsa tube of. ess diameter than the cham er arranged axially in said chamber said tube bein formed of material capable of receiving an e ectrical charge at high potential, a .reticulated disk arranged within the cylindrical chamber be ond the inner end of the tube and insulated rom the chamber and tube, said disk being an electrode-adapted to receive and discharge an electrical charge of high potential.

10. An apparatus for separating particles 'from a' fluid stream comprising a substantially cylindrical chamber, the cylindrical wall whereof is an electrode adapted to receive an electrical charge of high potential, and the'chamber having induction and eduction openings a reticulated disk arranged within the cylindrical chamber beyond the inner end of the tube and insulated from the chamber and tube, said disk being an elec; trode ada ted to receive and discharge an electricalc arge'of-hi hpotential.

11. An a paratus or separating particles from a flui stream comprising a substantially cylindrical chamber, the cylindrical wall whereof is an electrode adapted to receive an electrical charge of high potential, and the chamber having induction and eduction openings, a tube of less diameter than the chamber arranged axially in said chamber said tube being formed of material capable of receiving an electrical charge at high otential, a disk arranged within the c linrical chamber beyond the inner end 0 the tube and insulated from the chamber and stream comprising a substanranged axially therein, said tube beingformed chargeable bodies, said last-mentioned elec- 8, 4 An apparatus fgr separa tihg particles 9. An apparatus for separating particles and the chamber havin induction and eductube, said disk'being an electrode adapted to 1? ,0

receive and discharge an electrical charge of high potential.

' 12. An apparatus for separating particles from a fluid stream comprising a substantially cylindrical chamber, the cylindrical wall whereof is an electrode adapted to receive an electrical charge of high potential,

and the chamber having induction and educ-' tion openings, a disk arranged within the cylindrical chamber beyond the inner end of the tube and insulated from the chamber and tube, said disk being an electrode adapted to receive and discharge an electrical charge of high potential. r

13. An a paratus for separating'particles from a flui mass comprising a pair of Walls one within the other to form an annular sepa rating chamber and an induction assage leading tan entially into said annular chamber, one wa of said chamber being an electrode adapted to be electrically charged at high potential, and an electrode arranged in conjunction" with said chamber wal and apapted to be electrically charged at high potential to create a field within the annular chamber.

In witness whereof, I have hereunto set my hand and seal at Enterprise, Kansas, this 14th day of March, A. D. one thousand nine hundred and siX.

LAWRENCE N. MORSCHER. [L. 5.]

Witnesses:

A. W. EHRSAM, A. K. CHASE.