DE453464C - Plant for drying and preheating coking coal - Google Patents

Description

Plant for drying and preheating of coking coal. The present invention strives to shorten the cooking time and improve heat management for Kolz ovens to the fact that the from the coal tower by means of the known loading wagon after -The fine coal brought to the furnace beforehand through the dry cooling of the coke recovered heat is dried and preheated.

Compared to other methods, drying has the advantage of the heat of the glowing coke has the advantage that higher temperatures are available than with steam and the flue gases of the oven battery and therefore the drying process is more effective and runs faster. There is also a malfunction in the oven, such as does not take place during drying due to the flue gases from the oven battery.

The new device also adapts to existing local conditions therefore particularly good because it allows the fine coal to be used at will either as before from the fine coal tower directly to the loading truck or in the pre-dried State to be given to this, so that a disruption of the operation by their installation is excluded.

On the accompanying two drawings i and: 2 is the invention shown in one embodiment.

It shows: Fig. I a longitudinal section through . the fine coal tower with cross-section of the drying device, partial view of the furnace battery and cross-section (-ler heat exchange device, Fig. 2 a plan of the entire system, Fig. 3 a section through the device for dry quenching of the coke, the fine coal tower and the heat exchange device, Fig. 4 a section in front of the drying device 'Fig. 5 shows a cross-section through a vessel with connection lines used to dry the coke.

The coal accumulated in the Feinkohlenturni a has so far been through. the feed% vague b, which is currently holding the contents of an oven and traveling on the rails c, is fed to the oven d.

The extraction at the fine coal tower took place through the lower outlets f , which can usually be closed by slides.

According to the present invention, the coal emerging from the outlets f is picked up, for example, by four scraper conveyors g , which continuously feed it to the iron drying container i provided with the agitator h in troughs closed at the side and at the bottom.

The drying container i, like the loading trolley b, holds roughly the contents of an -OpenS .--- It can be closed with sliders k at the top under the spouts of the scraper conveyors and is provided with similar outlets at the bottom. n is the one used to handle the coke extinguishing vessels o, on the rail p and a corresponding mobile bridge crane (not shown).

By the fan q the coke cooling gases are in the direction of Arrows from the vessels o over the heat exchange device or memory r in a circle out so that it is kept warm all the time.

As a result, the fan in it at the same time as shown in Fig. 4 t fresh air entering after the dry cooling i is pressed, takes place in r a heat balance or a storage of the same instead, which can be achieved by fitting Choice of dimensions, control of the slide t, regulation of the number of revolutions of the fan s or the like can regulate appropriately.

In the present exemplary embodiment, the air preheated in r enters the drying device i at u, heats the container from the outside by means of longitudinal pulls in the order of the numbers written in Fig. I and leaves it after the coal contents are in motion. crossed through holes in the upper cylinder walls, through the two standpipes w (Fig. i and 4) into the open. If instead of the open agitator shown, one with a rotating tube bundle is selected, to which the warm air is fed through appropriate stuffing boxes and the cooled air is discharged, then this can be fed to the recuperator r anew, and the devices otherwise required for disposal are not required of from about escaping with the air coal dust.

As can be overlooked, the arrangement can also be made in the latter case be that the fan q the coke cooling gases directly through the tube bundle of Drying device i sucks The heat exchange device r would then fail completely.

For better clarity, the floor plan (Fig. 2) shows the quenching platform in front of the coke ovens d , in which a slot y is provided for the passage of the crane, and the platform of the coke press machine is indicated in 29.

As will be appreciated by what has been said ', in the new device once the entire contents of the fine carbon tower are brought as a stabilizer between carbon production and coke production for validity and is still the case that the carbon drying fails for any reason, given the possibility of coke characterized to maintain that the charging carriage b can also take the coal directly from the fine coal tower at any time, as shown in Fig. i by dash-dotted lines. In the illustrated embodiment, only the drivers of the scraper chains g would have to be set accordingly far and corresponding slides would have to be provided in the conveyor troughs on the floor, which correspond to the spouts so that the coal can fall through.

If, in the illustrated embodiment, the operator of the drying device is posted on it, all the spouts of the fine coal tower are available to him if their control is set up accordingly, and he can fill the drying device in a much shorter time than the loading trolley made up of four at a time the pouring f; also is to overlook the fact that, by the constant stirring in the dryer it can are quickly emptied 'apart from the fact that by decomposition of coal, despite the high operating temperature is avoided completely in it.

It is useful to be on the track of the loading trolley under the drying drum Build in an automatic weighing device to accurately measure the coal feed to the furnace to be able to regulate.

Claims (2)

PATENT CLAIMS: i. Plant for drying and preheating of coking coal, characterized in that between the fine coal tower and coke oven battery with a a stirrer provided by the heat gained during the dry cooling of the coke heatable intermediate container that holds about the filling of the loading trolley is switched who receives the fine coal supplied from the fine coal tower and dries it and delivers it preheated to the loading trolley. 2. Plant according to claim i, characterized characterized in that the fine coal from the fine coal tower to the loading carriage as well can be supplied with switching off the intermediate container.