US1339112A - Gas-washing apparatus - Google Patents

Description

L's. KENNEDY. GAS WASHING APPARATUS. APPLICATION FILED IAN-1.5, 1919.

Patented May 4, 1920.

3 $HEETS-SHEET 1.

FIG: I

7 11v l/E/VTOR John S Kennedy, WITNESSES J. S. KENNEDY,

GAS WASHING APPARATUS. I APPLICATIONAEILED JAN. 15, 1919.

Patented May-4, 1920.

3 SHEETSSHEET 2 IIIVVENTOR John S K en'nedy,

J. S. KENNEDY GAS WASHING APPARATUS.

' APPLICATION FILED JAN. I5, 1919 1,339,112, I Patented May 4; 1920.

3 SHEETSSHEET 3.

1: 5 a l 5 J 26 Z Z5 Z6 mmvrofl John S hnnedy, I WITNESSES:

ATTORNEYS JOHNS. KENNEDY, OF PHILADELPHIA, PENNSYLVANIA.

GAS-WASHING APPARATUS,

Specification of Letters Patent.

Patented May 4, 1920.

Application filed January 15, 1919. Serial No. 271,194.

To all whom it may concern:

Be it known that I, JOHN S. KENNEDY, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Gas-Washing Apparatus, whereof the following is a specification, reference being had to the accompanying drawings.

The invention relates to apparatus useful in washing gases delivered from blast-furnaces orsimilar devices.

The invention is directed to an apparatus of the above type arranged for horizontal gas flow. and of a diminutive height so as to permit the use of the water from the waste trough of the blast-furnace for washing purposes.

The invention is further directed to a gas washing apparatus subdivided into a number of serial chambers in which the successive stages of the washing process are accomplished.

The invention is also directed to a system of cooperative elements by which the flowing gases are broken up into exceedingly small units to efi'ect a thorough intermingling with the spray wash water.

The apparatus by which I attain these ends is represented in the accompanying illustrations'in which;

Figure I, is a plan view of a gas wash- 7 ing apparatus conveniently embodying my invention.

Fig. II. is a longitudinal sectional view through the same, and

Fig. III, is a cross sectional view, as observed in the direction of the arrows III-III, in Fig. II.

The organization constituting my invention consists of an inclosure 1. supported near its ends by pedestals 22, and sub divided by vertical partitions 3. and 5. into three serial chambers A, B and C, which I will respectively term, for convenience of nomenclature, the cooling chamber, the washing chamber and the precipitating chamber. Of these, the washing chamber B, is largest for reasons which will become apparent from further description. Partition 3, extends substantially. the full height of the inclosure and is interrupted at intervals after the manner of a grille to afford a number of elongated laterally extending rectangular openings 44, serving as communicating apertures between chambers A and B. Partition 5, terminates at its lower end 6, at a level considerably spaced from the bottom 7, of the inclosure so as to afford a communicating passage 8, between the washing chamber B, and the precipitating chamber C. The lower ends of partitions 3 ranged in respective alternative spacing so and 5, are subtended by a sloping grating as to assist in subdividing the gases and pre- I vent channeling as they traverse the chambers A and vB. Each lateral nozzle group is supplied from a branch pipe 16, extend ing from a main or manifold 17. The sprays from the nozzles are capable of individual regulation by interposed control cocks 18. The wash water collecting in the bottom of the inclosure is discharged by the assistance of its sloping bottom 7, through a drain pipe 19, to water seal and sewer.

The wash water may be supplied from any convenient source, but for the purposes of economy, it is preferable to employ the water from the waste trough about the blastfurnace. the comparatively low height of my improved washing apparatus being advantageous to this end.

The hot blast-furnace gases after leaving the dust catcher ordinarily employed in connection with apparatus of this type, are directed to the chamber A, through a conduit 20, which is supplemented with a lining of a suitable refractory material. as indicated at 21, in Fig. II. The washed gases are delivered from the apparatus through a discharge conduit 22.

In order to afford ready access to the interior of the inclosure for the removal of any vaccretions or solid precipitations, I have provided at convenient locations, a number of openings 25- 25. at each side of the apparatus. As best shown in Fig. III,

these openings are ordinarily protected by removable covers 26.

The operation of the apparatus is as follows:

The hot-blast furnace gases after being appropriately treated in a dust catcher in the well known manner, are delivered to the chamber A, through the conduit 20. While stream escapes through the openings 4:, in

partition 3, to the intermediate or washing chamber B. In consideration of the greater relative capacity of this chamber in connection With the alternate distribution of the spray nozzles, the gas stream is here even more broken up than in the former instance,

thereby effecting a thorough intimate intermingling with the wash water, and the complete elimination of the solid suspensions. After reaching this middle chamber, the general horizontal flow of the gases is interrupted by the baifling effect of the partial. partition 5, the attending reaction causing the gases to be directed downward through the interstices of the grating 10, the sloping sides of the angle bars serving to further distribute the spray water, thereby enhancing the co-mingling. v

The cleansed gases esca e through the passage 8, into the chamber (1, which is of ample size, in consideration of the retarded gas flow, to permit the precipitation of the moisture carried over from the washing chamber. The purified gases after traversing the chamber C, are finally discharged from the apparatus and conducted, by the conduit 22, to any convenient point for disposal or further treatment.

The oXids of the metallic ores carried over from the blast-furnace, as they condense in the washing apparatus, invariably build up in the form of accretions which are ordi narily difficult of removal. By the provision of the several cleaning openings 25, such deposits may be readily removed from time to time from the apparatus.

Having thus described my invention, 1 claim 1. A gas washing apparatus comprising an inclosure divided into a plurality of separate unobstructed. treating chambers. including a washing chamber wherein the gases are cleansed and a precipitating chamber wherein the suspended moisture is precipitated; in combination with means for subdividing the flowing gas in the washing chamber comprising a substantially horizontal grating therein in the path of the gases therefrom to the precipitation chamber; and means for directing spray wash water to the gases in said washing chamber.

2. A gas washing apparatus consisting of an inclosure divided into a series of separate treating chambers, including a cooling chamber wherein the gases are cooled and the greater amount of solid suspensions removed; a washing chamber of comparatively larger capacitywherein the cleansing operation is completed; and a precipitation chamber receiving the gases at one corner and discharging them at the opposite side wherein the moisture suspension is precipitated;

in combination with means for subdividing the gas flow as it traverses the said cooling and washing chambers; and means for simultaneously directing spray wash water to the divided gases.

3. A gas washing apparatus consisting of an inclosure divided into a series of separate treating chambers; means for subdividing the gas volume; and means for simultaneously directing spray wash water to the divided gases as they traverse said chambers, said means including spray nozzles staggered in series groupings arranged at the top of said chamber over the area of said inclosure.

4. A gas washing apparatus consisting of an inclosure divided into three separate serial treating chambers; a vertical grilled partition dividing the first of said chambers from the second whereby the gases are subdivided While flowing horizontally; a substantially horizontal grating dividing the second of said chambers from the third; a baffle partition for deflecting the flow of the gas downwardly through the said grating whereby the gas volume is further subdivided; and means for directing spray Wash water to the divided gases while traversing said chambers.

5. A gas washing apparatus consisting of an inclosure divided into three serial treating chambers; a grilled partition extending substantially the full height of the inclosure, dividing the first from the second of said chambers and adapted to subdivide the traversing gas volume: a deflecting partition dividing the second of said chambers from the third. and adapted to divert the gas flow in a downward direction, said deflecting partition terminating short of the bottom of the inclosure to afford an intercommunicating passage between the last mentioned chambers; a sloping grating subtending the lower ends of said partitions, the individual bars of said grating having inclined deflecting signed by name, at Philadelphia, Pennsyl- I sides functional in further subdividing the ania, this tenth day ofJanuary, 1919. trayersing as volume' and means for directing spr y Wash Waiter to the gases as JOHN KENNEDY 5 they traverse the first and second of said Witnesses: Y

chambers. I JAMES H; BELL,

In testimony whereof, I have hereunto E. L. FULLERTON.

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