US136066A

US136066A - johnson

Info

Publication number: US136066A
Authority: US
Publication date: 1873-02-18
Anticipated expiration: 1890-02-18

Description

I 2Sheets--Sheet1. W..|..!0HNSUN.

Ap paratus for Gondens ng and Pu rifying the Smoke 7 of Metauui'gic Furnaces. 7 No. 136,066. PatentedFeb-18,1873.

FIG-.l

70 i ineairei. f v I k li'zven for g AM. Pl-IOTO-UTHOGIMPHJC ca 1v. Hassonuz PnacEss) wlI-JUHNSGN. 2Sheets Sheet2. Apparatus forflondenslng and Purifying the Smoke =6 of Metallurgic Furnaces.

N0.136,066. C 5 Patented Feb-18,1873;

fl I f W Z WM? WILLIAM J. JoHNsoN, on ALLEN ALE, ENGLAND.

-IMPROVEMENT IN APPARAIUS FOR CllNDENSING AND PURlFYING THE SMOKE OF METAL LURGIC FURNACES. a

Specification forming part of Letters Patent hid-136,066, dated February 18, 1873.

To all whom it may concern:

Be it known that I, WILLIAM JAMES J OHN- SON, of Allendale, in the county of- Northumberland, Kingdom of- Great Britain and Ireland, have invented an Improved Method of and Apparatus for Condensing and Purifying Smoke and Vapors, of which the following is a specification:

I of a revolving wheel or drum, with projections dipping into water or other liquid for the pur-.

pose of producin g a shower or spray, in combin at-ion withan inclined screen constructed,as hereafter explained, of a number of partitions provided with horizontal ribs, between which the smoke,fumes, or vapor is caused to pass under the influence of the shower or spray. In,

' any convenient part of the flue, between the furnace-or hearth and the chimney or outlet, I form a chamber, the bottom part of which serves as a tank to contain water or other liquid. Above the surface of such water or liquid is mounted a revolving wheel or drum, having projections or wings on theperiphery, which dip into the water and, as the wheel or drum revolves, throwup a shower or sprayin an inclined direction. In advance of this wheel, and near'to the chimney, I form a net-work or an inclined screen, constructed of anumber ofverticalparti'tions of graduated heights, those nearest to the wheel being the lowest, so that the top of the partition forms an incline at about the same angle that the shower or spray is thrown 011' from the wheel or drum. These partitions are provided with laths, ribs, or gratings, set horizontally or at an inclination, and the whole screen is so arranged and situated that the smoke, fumes, or vapor passing from the furnace or hearthto the chimney oroutlet must.

necessarily pass through the spaces between these said partitions, while the shower of water is projected over the top of the same and also all acids or soluble or insoluble metallic,

sulphurous, or other particles are removed therefrom. In fact, the smoke, fume, or vapor becomes thoroughly washed and purified on its passage through the-shower or spray and between the partitions, and only the purified vapor escapes by the chimney or otherwise to the atmosphere. The water from the partitions falls again into the tank, and is used over and over again. The soot or carbon, and also the other matters extracted from the smoke or vapor, whether solid or in the form of a solution, may be extracted from the wash-water and utilized in a variety of ways, according to the nature of the material under combustion.

Instead of a drum or wheel, as above described, any other means of producing a shower or spray by water under pressure, or by the condensation of steam, might be employed in combination with the screen; and by putting vanes on the wheel'and admitting the smoke, fume, or vapor at the center, the draft may be greatly accelerated. Insome instances, also, I propose to place a jet of steam in the chimney for the same purpose:

In order to enable others skilled in theart to make and use my invention, I will now proceed to describe its construction and opera-- tion.

On reference to the accompanying drawing, which forms part of this specification, Figure l is a longitudinal section, takenv vertically through the apparatus. Fig. 2 is a similar section, taken horizontally; and Fig. 3 is a transverse section through about the line A B.

a aispart ofthe flue leading from the furnace,- heart-h, or other place where the combustion is carried on; and b I) is the lower part of the chimney. c c is thefpurifying-chamber, the bottom part of whichforms a tank, d d, for containing the water'or other liquid employed.

It will be observed, on referring to Figs. 2 an d 3, that the lowest part of this tank is carried outside the fiue, and is open at thev top, so as to allow of access to remove the solid or other matters extracted from the smoke or fumes,

PATENT OFFICE.

which may be utilized ina variety of manners, according to the nature of the material under combustion. The escape of smoke or gases at this point is prevented by placing the openings e e (communicating with the interior) below the level of the water or other liquid. f f is the wheel for throwing up the spray or shower of water or other liquid, as seen at Fig. 1. It is mounted on a shaft, g g, which passes through the wall of the flue, and is driven at the requisite speed by means of a band-pulley 0r toothed wheel in connection with the steamengine or other motive power. This wheel is shown in the drawing with tines or pegs dipping into the water or other liquid; but, as previously mentioned, it may be made in the form of a fan, so as to increase the draft, in which case the flue would be carried outside the ends, and the smoke or fumes be drawn in round the axle or other means for throwing up a spray or shower in the manner indicated at Fig. 1 might be employed. The inclined screen or grating is shown at Figs. 1 and 2, and consists of a number of vertical partitions, h h,

of graduated heights, the partition next to the wheel being the lowest, and dipping into the water or other liquid so as to prevent any smoke or fumes from passing to the chimney excepting through the screen. On each side of each partition there are fixed, either horizontally or at an inclination, several laths or ribs, 2' i, of an angular or other suitable sec tion, the whole forming a screen, in passing through which; the smoke or fumes become thoroughly washed and purified, as previously described. The arrows in Fig. 1 show the course of the smoke or fumes.

I may here remark that, although only one wheel and one screen are shown in the drawing, it will be evident that two or more wheels. and screens may be placed in one flue, if found desirable.

7c krepresenta jet of steam, which may he placed at the foot of the chimney, if further aid to the draft should be required.

I I am aware that the products of combustion from a furnace have been passed through a chamber into which water is thrown in the form of spray by a rotating wheel, and I make no claim to this; but

I claim 1. The combination, with a flue forIthe passage of the products of combustion, of a series of slats or a screen, or its equivalent, from which water is caused to fall in a constant shower, substantially as described.

2. The combination, with the slats or screen, of a wheel, by which water is thrown upon the slats, as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

W. J. JOHNSON. Witnesses:

WM. HEDLEY, GEO. BARR.