US1467506A - Method of cooling coke - Google Patents

Description

H, san-mmm METHOD OF COOLING COKE Filed Jus 5 Sheets-Sheet l A ft2:

Sept. 1, 923.

H. SCHVVENKE METHOD OF COOLING COKE Filed vJune 24. s sheets-sheet 2 sem. u, 1923. awww H. SCHWENK@ METHOD 0F COOLING com File@ June' 24, 3.929 25 Shaetuheet 5 EHSGEN, GNY, ASSIGNOB 0F ONE-HALF T0 ZECHE WEBTP'HLIA, GERMANY, A CORPORATION 0F GERMANY.

MTO!) OF COOLING COKE.

Application Med June 2A, 192i). Serial No. 391,530.

To cZZ whom t may concern:

Beit known that I, i SGHWENKE, a German citizen, residing st Herringen, Westphalia, Germany, have invented certain new and useful Improvements in Methods of Cooling Coke, of which the following is s speciication.

My invention refers to the art of cokin and its particular object is a novel metho us well as a device for carrying it into eect, of dry-cooling the coke.

, l't has been tried repeatedly to choke or d -cool colic, but the methods roposedk up ti now and which considered the vuse of indi'erent gases passing through the coke or ,of a cooling liquid circulating in hollow wells of a cooling chamber, have proved to be commercially useless. All methods of working lwhich have been made public up till now involve the drawback oit requiring a separate treatment of the individual cake and therefore resulting in a non-continuous operation dependent, as ier es time is concerned, upon the pushing of the cakes, For the same reason the heat taken upv by the cooling medium and which is intended to be used' for instance in the generation of steam, i

does not leave the cooling chamber with a 'constant high temperature but diminishes gradually in accordance with the progress in cooling. Along with this nadual cooling down of the coke-calze, as it is being sul l jected to the cooling treatment, the efficiency oi this treatment 'changes to the worse.

According to the resent invention, now,

the dry-cooling of co e by means of indierf ent gases is improved by transporting the cokel as it leaves the oven, into a separate cooling chamber adapted to take up a lurality oi charges, a uniformity of coo ing and sup ly of heatv by Way of the cooling medium eing obtained by each fresh charge which arrives 'with the heat of the oven, being fed into theooling Achamber at the end where the cooling medium leaves it, 'while in contradistinction thereto the fresh cooling medium is introduced at the end Where the cooled coke is discharged. By proceeding in this wey not onlyw the lack of continuity of the methods hitherto proposed is obviated in this sense that the cooling chamber forms steam, but also the coolin 'conditions are themselves greatly improve For by means of the counter currentsavailable according to my invention a state of permanency, as far as the cooling is concerned, is kept iup in so far as now the drop in temperature between the cooling medium and the coke 4which shall be cooled will now remain sub stantially constant, whereby also the ediciency of the cooling remains constantly high.

ln-consequence thereof the cooling medium leaving the chamber charged with heat pre-l sents a uniform high temperature, whereby va more perfect utilization of the heat is obtained.

In the drawings ailixed to this specificaof the novelmethocl forming the primary ob ject of the present invention, l prefer pro# ceeding as follows:-

In order to be able to utilize the coke storing place in the existing plants, l first of allcause the coke to be pushed. into a chamber' movable on wheels and having its inner Walls lined with strong cast iron plates, said chamber being 'run on to the of the grou of ovens where its content can be pushed @y into a truck c .consisting of three troughs. The troughs o rest loosely on the truck and may be lifted thereo' by a hoist and be emptied by opening them. The lcoke taken up by the troughs. is lowered into the cylindrical cooling chambers d1. d2, d, d2 (il, the hot coke thus uniformly filling the coolingchamber suitablyrlined with refractory bricks. Each chamlwr d holds from 35 'to tons coke, that is to say, between 4 and 7 charges and is-c1osed, after having been filled, by a cover e.' The cooling gases enter through a chamberjuhaving three nozzles g, h, z' connected to the pipes g', k and i' respectively communicating. with all the cooling chambers and provided with clos- `coke storing place enclin front of the head Mtl ing devices. Underneath the cover of each cooling chamber there is futherfdisposed an outlet Z: conneeteahby aid of ipe la', having suitable closing devices inserted, with pipes g, h', 2", which the pipe is leading` to the boilers or ovens is connected to.

The cooling gases are forced by means of a blower through the pipe g into the first cooling chamber where they cool the coke Containedv therein and takenp heat, whereupon they pass through pipes la and z" into the second cooling chamber in order there to be heated further. The pipes it and It then lead the gases into the third cooling chamber, Filled last of all and therefore containing the hottest coke, so that the gases reach the boilers or ovens with a high temperature, there to spend their heat and to be carried anew into the cooling;v chambers; the fourth-'and fifth coolingl chambers are emptied and llednfresh during this time. After the/first fillingr has cooled dowrn the rstcooling chamber'is cut oft', While the second is thrown in so that the gases are always blown through three coolingrhambers one after the other. As shown in the foregoing description there exists a true cycle of working between the tive chambers, such as is frequently established for various purposes and which most reliably safeguards the desired mode of proceeding.

The conduits for the hot gases are suit? ably protected against losses ot heat. The emptying of the coolingr chambers is etfected by aid of valves Z which allow the coke to slide on to a loading device. The passage of the cooling gases through the .merece replacing the massot coke first reaching the desired temperature by fresh hot Icoke and so altering the path of the inert gases that this fresh coke shall be the last in the series to be treated with the gas, all in a continuous process.

2. The. continuous method of cooling coke which consists in arranging hot coke in discrete masses, each mass having a different temperature., passing inert gases therethrough in series in the order of the increasing temperatures prevailingy therein,

replacing the n'lass of coke first reaching the desired temperature by v'fresh hot coke and so altering the path of the inert gases that, this fresh coke shall be the last in the series to be treated with the gas, Aall in a continuous process. the inert gas being made to move in a cyclic path and the heat being' extracted from it between its passing out from the hottest coke and its introdue- 1 tion into the coolest mass.

In testimony whereof I atiix my sigmture.

HERMANN soHWnNKE

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