US1340990A - Coke-oven plant - Google Patents

Description

c. STlLL AND,C. WESSEL.

COKE OVEN PLANT.

APPLICATION FILED MAY 8, 1915.

Patented May 25, 1920.

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CARL WESSEL BE A'r-ronygi-Y C. STILL AND C. WESSEL.

COKE OVEN PLANT.

APPLICATIQN FILED MAY s, 1915.

1,340,990. Patented y 25,1920.

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3M-SMM4 ATTDR usv.

C. STILL AND C. WESSEL.

COKE OVEN PLANT. APPLICATION FILED MAY 6, 1915.

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CARL STILL, OF REGKLINGHAUSEN, AND CARL WESSEL, 0F BOBBECK, NEAR ESSEN,

GERMANY; SAID WESSEL A-YSSIGNOB. T0 SAID STILL.

COKE-GVEN PLANT.

Specification of Letters Patent.

Application filed May 8, 1915. Serial No. 26.852.

To all "whom it may concern Be it known that we, CARL STILL and CARL VESSEL, engineers, subjects of the German Emperor, and residents, respectively, of Bismarckplatz, Recklinghausen, Prussia, Germany, and of Gasstrasse, Borbeck, near Essen, Prussia, Germany, have invented certain new and useful Improvements in Coke-Oven Plants, of which the following is a specification.

Our invention relates to improvements in coke oven plants, and more particularly to the bench which is located at the discharge side of the coking oven and is used for quenching the coke. One of the objects of the improvements is to build the bench at the discharge end of the coking oven in such a way, that the quenched coke can easily be removed and loaded on cars. An

other object of the improvements is to provide means for sifting the coke while being moved from the oven to the trucks, so that only high grade coke is loaded on the trucks. lVith this and other objects in view our invention consists in providing means whereby the mass of coke which is discharged from the oven is advanced as a whole over the bottom of the quenching bench and to the place where it is loaded on trucks or the like, said means being constructed in such a way, that at the same time while thus advancing the coke the small coke or breeze is sifted from the more h valuable lumps of coke. In a coking plant in which our improved it is not necessary to employ a great number of workmen who heretofore have been necessary for sifting the coke and for loading the lumps on trucks.

For the purpose of explaining the invention two examples embodying the same have been shown in the accompanying drawings, in which the same letters of reference have been used in all the views to indicate corresponding parts. In said drawings- Figure 1, is a vertical longitudinal seehe plant showing the bench where the coke discharged from the coking oven is quenched,

Fig. 2, is a plan view showing the discharge ends of a series of coking ovens and the quenching bench located before the said discharge ends,

Fig. 3, is a detail view showing a grate or screen provided on the quenching bench,

system is provided c Fig, 4c, is a cross-section of the grate show in Fig. 3,

F g. 5, is a vertical longitudinal section similar to that shown in Fig. 1, and showing a modification of the plant, and

Fig. 6, is a planview of Fig. 5.

Referring to the example illustrated in Ihgs. 1 to 4:, a plurality of horizontal coking retorts 7a a re placed one beside the other. In front of the discharge end of the coking ovens there. is a bench Zwhere the mass of coke 72 which has been discharged from one of the ovens is quenched. The said bench may be built from masonry, and it is provided along its tail or discharge end with a sloping platform or ramp '2). The bottom of the quenching bench is formed with a gutter 0a which. extends over the whole breadth of the bench, which is slightly inclined from both sides and toward. the said gutter. The gutter is covered by perforated plates Z of sheet metal through which the excess of water is removed which hasbeen used for quenching the mass it of coke. Between the ramp 1) and the gutter a; a grate r is provided which extends over the whole length of the bench. The bars of the said grate are disposed in the direction of the 2 travel of the mass of coke being moved frointhe ovens to the ramp '1) and the car,

and they are gradually reduced in breadth, the broader end of the bars being located at the side of the coking oven and the reduced end at the side of the sloping discharging ramp o. The bars 8 are spaced at suitable distances apart and disposed parallel to one another, and the slits provided between the same are gradually broadened from the side of the coking ovens to the discharge side of the bench. Preferably the said bars 8 are i made from rolled iron bars having a crosssection in theform ofa T, the vertical webs of the said bars providing the supporting bodies of the bars and the flanges the coke supporting surface. Preferably the bars 8 Patented May 25, 1920. I

are made from iron bars of ordinary T-form, the flanges of the bars being so fashioned, that they are gradually reduced in breadth, for which purpose the part 5" shown in dotted lines in Fig. 3 is removed. The slits of the grate are provided by disposing the flanges of the bars at suitable distances from one another, and their height corresponds to the thickness of the flanges of the bars. In the foundation of the bench supports f are embedded at suitable inter vals which project beyond the rear end of i the bench-and carry bearings e for a shaft d which extends along the whole length of the bench and is provided with a plurality or drums suitable arranged at intervals.-

.I The shaft (Z is adapted to be rotated by suit able mechanical means such for example as a motor (notshown).". It w ll be easily understood that theedrums c could be arranged side by side without intervals or that each series of drums between each pair of bearings'e could be substituted by a cylindrical bodyfcorresponding in length to the distance betweenthe said bearings e.

, Below the grate ra channel if having in vertical cros s-section the form of a funnel i is provided in the quenching bench, which ,channel extends along the bench and is equipped at its bottom with discharge open- .ingst which are adapted to be closed by hingedgates t The discharge openings't ot-the funnel shaped channel communicate withanother channel y below the said channel tatthe bottom of which rails are pro- Ividedforone ormore trucks z. a

or moving themass of coke from the ovens toward the discharging ramp 'v a scraping oli member a is provided the length of which is such, thatwhen acting on a mass of coke discharged from one of the ovens it projects beyond-the same at. both ends. i The said scraper is freely located on V thequenchingbench andis held in contact therewith by its own weight. To the ends of the scraper-adrawing-ropes bor. chains 7 are secured, the opposite ends of whichare adapted to be. attached to a pair of drums 0 of the shaft (Z. Along the outer side of the quenching bench rails m are pro- 7 videdjon which carriagew can be run.

The rails in are disposed in such a way, that thelower edge of the discharging ramp projects 'abovethef truck .The operation of the plant is'a s' 'follo'ws:

mass hpf'coke, and the chains or ropes vb secured thereto areflattached to two of the drums jc sothatithe ropes are as 'far'as-possible perpendicular, to the shaft'd. ,In ro- -tating the shaft ,d themass of coke h is nbodily, moved by lmeans of the scraper a v over--the;quenchingbench and toward the 1 discharging ramp 0.

When discharging and quenching the massof coke, thegreatest ipa'rt of the smallfcoke or breeze getsto the ,bottomof the-pilejof coke, so"that it falls through the slits ofthe grate r and into the channel t as the mass of coke is being moved over the said grate. lVhile being moved-by the scraper a the mass it of coke remains in the form of a coherent pile in which the lumps retain their respective positions without tumbling one over the other; hen the mass of coke arrives on the sloping'ramp '0 it falls into the truck to which has been placed in position for receiving the coke Therefore the coke is mechanically loaded 7 right from the bench on the truck. By constructing the bars 8 of the grate in such a.

way, that'the slits provided between the same gradually increase in'breadth in the direction of the movement or the coke, iteis impossible for small pieces ofcoke to be held between the bars. The small pieces of cake which get between the bars are pushed forward along the same by the mass of coke moving over the grate until they arrive at a.

part of the grate where the breadth of the slits is sufiicient to permit them to fall through the same. The small coke which is gathered in the channel 25 is removed from time to time by opening the gates E, where- "by the small coke is discharged into the truck 2 and removed thereby; If it is desired to remove a mass of coke which has been drawn from one of the.other coking ovens of the battery, the free ends of the ropes b are attached to the drums 0 which are opposite to the'discharge end of the said oven, whereupon the operation is the sam as has beendescribedbefore.

In the -modification of the coking oven shown in Figs. 5 and 6 the grate bars 8 are not straight as shown in" Figs. 1 to 43, but are bent in such away, that one part of the grate is'substa'ntially horizon-;

'tal while the other part lies in an inclined plane. Each bar consists'of two sections r and r disposed at an obtuse angle to each other, the parts r being disposed su b- {stantiallyin the plane of the bench Z, and j the sections r sloping downward s'ubstan v tially in the same direction as the ramp 1;. desiredthe' sections, 1'} and r maybe made integral with each other, and their 3. 'The bars aremounted on the foundasen of the quenching bench [and they are supported at their" middle. by'a transverse beam 71 supported by the supports which ca'rrythe bearings e of the: shaft (Z.

7 The free endsiofthe supports f are sup- ,portedon'; pillars'gp as is shown in Figs. 5

and 6.

scraper a on thesections r of the" grate thegreater'partof thelsmall coke or breeze falls through the slits'of the grate into'the passage t. That part of the small coke Which my e e dentally rem in W in th mass of coke'ls removed While thema'ss'is flanges are formed in the'same way as has 7 been describedwith reference to Figs. 1 to a When the mass of coke is moved the moving over the grate-bar-sections 1'. When the coke in the form of a coherent pile gets on the part where the sections 4' and 1' meet, it will break up and the heavier lumps thereof will roll down on the sloping portions 7' at increased speed. Thereby the mass of coke is loosened, so

that also those parts of the small coke cair fall through the slits of the grate which were held within the coherent pile. Therefore, the small coke is removed from the valuable lumps of coke in a higher degree than in the construction described with reference to Figs. 1 to i.

We claim herein as our invention:

1. In combination, a coke oven system comprising a plurality of ovens, a horizontal and wide stationary storing and quenching bench, common to and adapted to receive coke from all of said ovens, said bench being provided with a channel, a screen over said channel, a downwardlydisposed stationary ramp extending longitudinally of the bench, and a scraper for moving a mass of coke from a selected oven 1n a coherent pile across the bench, over the screen and toward the ramp aforesaitb v 9-. In combination, a coke oven system comprising a plurality of ovens, a horizontal and wide stationary storing and quenching bench common to and adapted to receive coke from all said ovens, and provided with a channel, a plurality of bars secured in place to form a screen over said channel, the outer ends of said bars being downwardly inclined, a stationary ramp, formed, in part of said outer ends of the bars, and extending longitudinally of the bench, and means for scraping coke from the bench, over the screen and toward the ramp aforesaid.

In witness whereof we have hereunto set our hands in presence of two witnesses.

' CARL STILL.

CARL XVESSEL. Witnesses GUsTAvE LAMBERTZ, HERMANN Person.

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