US1752045A - Gas washer - Google Patents

Description

March 25, 1930. F. H. WAGNER GAS WASHER 1927 2 Sheets-Sheet l Filed June 28 flbbozwaga March 25, 1930. F. H. WAGNER GAS WASHER Filed June 28, 1927 2 Sheets-Shea?. 2

Patented' Mar. 25, 1930 UNITED sT-Ai'rEs PATENT OFFICE FREDERICK HENRY WAGNER, OF BALTIMORE, MARYLAND, ASSIGNOR TO THE BART- LETT HAYWARD COMPANY, E BALTIMORE, MARYLAND, A CORPORATION Ol.

MARYLAND IApplication Atiled. June 28,

' This invention pertains to liquid and gas contact apparatus and more specifically relates t'o a washer in which gases such as blast furnace gases may be washed to remove the 3 solids from the gas.

The invention is illustrated in the accompanying drawings wherein,

Figure 1 is a vertical sectional view of the apparatus;

Figure 2 a transverse horizontal sectional view taken on the line II--II of Figure l; and i Figure 3 a similar view taken on the line III-III of Fi re 1. v

The main obJect of the invention is to provide an apparatus wherein the-gas is compelled to pass through various sprays; .through various water curtains; through various wetted screens; and through sheets ge of water which are thrown outwardly from the center of the machine toward the inner face of the casing. The arrangement is such that the gases which are forced or drawn through the apparatus take a tortuous pasz5 sage and, as above noted, pass through the water employed for cooling and cleaning the same.

It will beY appreciated that the apparatus may be made of Aany desired heightby employing separate sections or building 'the casing. of the requisite height -but in the instant case I have shown, merely for the purpose of illustration, a single casing or shell denoted by 1 and which is cylindrical in form. The l shell or casing will be supported upon a suitable foundation, not shown, and is rovided with a gas ,inlet 2 which opens into t e lower end of the Casin and with a gas outlet 3 at the upper end. aid outlet is 1n communication with a chamber 4 formed between the top of the casing 5, an annular frusto-conical partition or element 6 and a vertically disposed cylindrical member 7 having an opening 8 in that side thereof remote from the outits lower end and is in direct. communication with a chamber 9 immediately below the parftition or wall 6.

Extending vertically through the shell is av 59 centrally'disposed shaft 10 to which rotary let 3. The-cylindrical member 7 is open at-v GAS WASHER 1927. serial No. 202,124.

motion is imparted through any suitable means, not shown. Proper supports for the upper and lower ends of the shaft will, of course, be provided but as these are well known in the art I have not deemed it necessary to illustrate the same.

The inlet 2 opens into what may be termed the lower chamber 11, the upper ortion of the chamber being defined by the ottom of a pan-like member 12, the up er edge whereof is serrated or notched as s own A1n Figure 1. This pan will be su ported in spaced relation to the walls of t e casing by brackets 13 or in any other approved manner.

An outlet pipe 14 s provided in the base of the casing, extending up into the chamber 11 so as to maintain a volume of water within the lower portion thereof. Secured to the shaft 10, o r at least that portion thereof which is in the chamber 11, is a pumping element or cone-set 15, said element being 'the type shown in Letters Patent to Feld No. 983,-

x037, dated January 31st, 1911, though of.

course any other form of pumping and spraying element `may be utilized in so far as the broad invention is concerned. The lower end of this element dips into the water in the lower portion of the apparatus and through centrifugal action tends to draw the water up and spray the same laterally into intimate c ontact `with the incoming gas.

Secured to the shaft immediately above the pan 12 is another pumping element or coneset denoted by 16 and extendingoutwardly therefrom below the perforated portion is a series of vanes 17 placed in such angular relation as to act as a pump or fan upon the gas and to throw the same outwardly between a series of perforated plates 18 preferably set in an angular relation to each other, as best shown in iFigure 2. In other words, the

plates, as will be seen upon reference to said.

figure, are not diametrically arranged within the shell or casing but are thrown olf-center so that their ends stand in spaced relation to each other and form passages or pockets int and through which the gas is forced.

Overlying and rotatable with the coneset 16 is a distributor or spray plate 19. This plate is imperforate and extends outwardly to, or slightly beyond, the inner ends of the plates 18 and beyond the edge of this plate 19, and overlying the upper edges of the plates 18, I provide a foraminous surface 20. This surface may be produced 'from wire screening of the desired and proper mesh.

As will be seen upon reference to` Figure 1, the inner portions of the lower edges of the perforate plates 18 are given a downward inclination and a closure plate 21 conforming to such contour is secured in position with reference to such edges. Thus it will be seen that any gas passing upwardly around the pan 12 is caused to travel inwardly toward the center of the washer and then laterally into and between the friction plates 18 and up through the foraminous or screen surface 20. In other words, the plate 19 which overlies the cone-set prevents the gas from passing in a direct upward direction to the vnext chamber above.

The chamber in which the cone-set 16% operates is denoted by 11 and the gas, after it passes from said chamber and through'vthe foraminous plate, enters another chamber 11b. Mounted within this chamber is a pan 22, said pan being supported with its edge in spaced relation to the wall of the casing upon suitable brackets or supports 13a. The pan, in this instance, is rovided with a series of overflow or weir tu es 23, the lower ends of which extend below the bottom ofthe pan and are notched so as to cause the water to break up in streams as it flows from said pipes. These pipes or weirs maintain a given level of water within the pan so that the coneset 16a which cooperates with said pan will always have an adequate supply of water.

- The arrangement of the friction plates; the

foraminous screen; the distributing plate; and the fan blades is the same as that heretofore described and the parts are denoted by the same reference numerals with the exponent a added thereto. V

Above the chamber and elements just described is a further chamber 11c and in this chamber,as just noted. the same arrangement obtains as to the mechanism and parts as is present in the chamber 11".

Partitions 22b willpreferably be provided in all of the pans to prevent swirling of the liquid therein. y

The wash water is introduced into the apparatus through a pipe 24 connected with any suitable source of supply under pressure. ,said pipe being connected at its inner end to a head or nozzle 25. As will be seen upon reference to Figure 1, this nozzle is located centrally of the apparatus in fact surrounds the shaft 10 and the water discharges from the lower end thereof directly onto the distributor line or sprayed condition toward the wall of underlying distributor plate through the Weir tubes or channels 23a. This flow of the water continues throughout the apparatus until it reaches the pan 12. It flows from this pan through the notches formed inthe edge thereof in a series of streams and collects in the bottom of the chamber 11 as indicated in Figure 1.

The flow of the gas is indicated by the arrows. Coming into the chamber 11 from the inlet 2 the gas is brought into intimate contact with the liquid which is pumped up and sprayed outwardlyby the cone-set 1d. It then passes around the pan 12 in intimate .contact with the streams of water falling from said pan. It is then deflected inwardly to a certain extent by the closure element 21 and through the down-coming curtain of sub- "divided streams passing downwardly between the plates 18. Then in its passage it re-curves outwardly, being forced between the inner ends of the plates 18 or into the pocket formed therebetween by the blades 17 through the openings in the plates and upwardly vthrough the foraminous member 2() where it meets the down-coming water passing from the chamber next above. l In passing through the pockets formed between the plates 18 the gas is brought into frictional contact with the plates 18 and inasmuch as said surfaces are wetted they tend to remove the solids from the gas through frictional-action. So too, as the gas passes upwardly through the screen 2O further frictional action inheres.

As the gas leaves lthe screen or foraminous surface 20, after passing therethrough, it must of necessity pass through the spray or film of water thrown outwardly by the distributor plate 19. Hence at this point the gas is again brought into intimate contact with the water. v A. The How of gas just set forth inheres in each of the succeeding chambers as the gas passes upwardly until it enters the chamber 4 and passes outwardly therefrom in a clean condition through the outlet 3.

It is, of course, to be understood that the pockets formed by the plates 18 (0r18a) form in effect baiiles for the up-going gas. Other lll types of baflies might be employed in conjunction with the 1stributor plate and still perform its function of throwing a spray transversely of the 11p-coming gas. So too, the air propelling means associated with the 'liquid pumping and spraying element located within'the casing; a series of plates extending inwardly from the wall o'f the casing forming a series of pockets open at their inner ends; a foraminous surface in the upper portion of the pockets and through which the gas passes; and means for supplying a wash liquid to the pumping and spraying element.

2. In a as washer, the combination of a easing having a gas inlet and outlet; a liquid pumping and spraying element located within the casing;and a series oi plates arranged within the casing, said plates extending inwardly from the inner wall of said casing and orming a series of pockets, said pockets having their inner ends opening toward the pumping and spraying element, the walls oi the pockets being angularly arranged with reference to each other. y

3. lIn a gas washer, the combination of a casing havm a gas inlet and outlet; a liquid pumping an spraying element located within the easing; and a series of plates arranged within the casing forming a series of pockets, said pockets being closed at their outer end and having their inner ends opening toward the pumping and spraying element, the walls of the pockets being angularly arranged with reference to each other, said walls being perforate.

4. In a gas washer, the combination of a casing having a gas inlet and outlet; a liquid pumping and spraying element located withl 1n the casing; a series of plates arranged within the casing forming a series of pockets, said pockets being closed at their outerends and having their inner ends opening toward the pumping and spraying element, the walls of" the pockets being angularly arranged with reference to each other, said walls being perforate; and .a foraminous outlet for the pockets located at the upper portion thereof.

5. In a gas washer, the combination of' a casing; a combined liquid pumping and spraying element located centrally thereof; a series of plates located around the same forming a series of pockets, the inner ends of said pockets opening toward the spraying element; and means associated with the latter element for forcing the gas into the pockets.

6. In a gas washer, the combination of a casing; a liquid umping and spraying element mounted t erein; means arranged in line with the spray for battling the passage of a gas through the washer;

means associated with the pumping and spraying element for throwing liquid transversely of the flow of as 'from the bailing means; and means for ceding liquid to said liqpid throwing means.

In a gas washer, the combination of a casing; a liquid pumping and spraying element mounted therein; means arranged in line with the spray for baiiling the passage of gas through the washer; an imperforate plate overlying the pumping and spraying element and rotatable therewith, said plate lying in a plane substantially coincident with the gas discharge of the baiile means; and means for feeding liquid to said plate.

8. In a gas washer, the combination of a casing; a liquid pumping and spraying element mounted therein; a plurality of plates extending inwardly from the wall of the casing toward said pumping element, said plates being perforate and standing at an angular relation to each other and forming a series of pockets opening toward the pumping and spraying element; a closure extending around beneath the lower edges of said plates; an annular screen surface overlying the outer upper edges of said plates and forming a gas discharge from the pockets; a distributor plate associated with the spraying and pumping element; and means for feeding liquid to said plate.

9. In a gas washer, the combination of a casing having a gas inlet at its lower and a gas outlet at its `upper end; means for introducing liquid into the upper portion oi the casing and centrally thereof; a shaft ein tending down through the casing; a pan standing in spaced relation to the walls of the casing; an inverted rustro-,conical pump ing and spraying element carried by the shaft and dipping at its lower end into the pan; a distributor plate overlying the upper end of said frusto-conical element and upon which the liquid introduced into the washer is discharged; a series ot plates extending inwardly from the wall of the casing, and forming a series of pockets opening at their inner ends in line with the spray forming portion of the frusto-conical element; and a foraminous body overlying the upper portion of the pockets adjacent their outer ends.

10. Ina gas washer, the combination of a casing having a gas inlet at its lower end and a gas outlet at its upper end; means for introducing liquid into the upper portion oi the casing and centrally thereof; a shaft ex tending down through the casing; a par standing in spaced relation to the walls of the casing; an inverted truste-conical pumping and spraying element carried by the shaft and dipping at its lower end into the pan; a distributor plate overlying the upper end of said frusto-conical member and upon which the liquid introduced into the washer is dim charged; a series of plates extending inwar L III ly from the wall of the casing and forming a series of pockets, said pockets having openings at their inner ends in line with they spray forming portion of the frusto-conical element; a oraminous body overlying the upper portion ofthe pockets adjacent their out.

er ends and means associated with the rustoconical member for forcing the gas into the open ends of the pockets.

11. In a gas washer, the combination of a casing having a gas inlet at its lower end and a gas outlet at its upper end; means for introducing liquid into the upper portion of the casing and centrally thereof; a shaft extending down through the casing; a series of pans mounted in the casing in spaced relation to each other and to the walls of the casing, a plurality of successive pans having at least one weir which discharges water in a downward direction inward of the marginal f portion of the pan; a pumping and spraying,

element mounted above each4 pan and cured to the shaft for rotation therewith, the lower end of each pumping element extend ing into the pan immediately below the same;

name to this specification.

FREDERICK vHENRY WAGNER.

a series of perforate partitions forming pockL ets extending inwardly from -the inner wall of the casing in line with each of the spraying elements, said pockets being open at their inner ends; an annular 4fora-minous body overlying the upper outer ends of said pockets to orm gas discharge openings; and a distribu` tor plate associated with each of the pumping and spraying elements, said distributor plate serving to throw outwardly the liquids l which is discharged thereon. y

12. In a gas washer, the combination of a casing having a gas inlet at its lower end and a gas outlet at its upper end; means for introducing liquid into the upper por- 4 tion of thecasing and centrally thereof; a

shaft extending down throughthe casing; a series or pans ymounted in the casing invspaoed relation to each other and to the walls of the casing, a plurality of successive pans having at least one weir which discharges water in a downward direction inward of the marginal portion of the pan; a pumping and spraying element mounted above each pan and secured to the shaft for rotation therewith, the lower end of each pumping element extending into the pan immediately below the same; a series ot perforate partitions forming pockets extending inwardly from` the inner wall of the casing in line with each ot the spraying elements, Asaid pockets being open at their inner ends; an annular oraminous body overlying the upper outer ends of said pockets to form gas dischargeppenings; a distributor plate associated with each of the pumping and spraying elements, said distributor plate servin to throw outwardly the liquid which is disc arged thereon; and a series of radially disposed inclined blades extending outwardly from each of the pump-

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