DE2031870A1 - Process for the production of equal piece coke in coking ovens - Google Patents

Description

Dr.F / Ke June 19, 197ο

"" ** ' Fatent registration

the
Carl Still company, Recklinghausen

Process for the production of identical pieces of coke in coking ovens

It has been suggested to match coke in horizontal or vertical coking chambers in such a way that one can produce pellets that are made from fine coal and Produces water, or briquettes made of coal are externally coated with a layer of fine iron ore, e.g. hematite, and the carbon bodies prepared in this way take precautionary measures filled in coking ovens and coked

It has also been proposed for the application of the Iron ore layer on the surface of the coal body Mixture of fine coal, preferably that of which the coal bodies are made, and iron ore to use · On this We succeed in reducing the iron ore content of the coal bodies, which is necessary in order to adhere to one another during coking prevent it from being reduced considerably · The outer layer of iron ore has an oxidizing effect on the back bitumen of the coal, causing a firm caking of the individual coal bodies during coking is prevented · You get a from the coking furnace Coke charge, which consists of only loosely connected, essentially uniform coke bodies, which are supported by light mechanical treatment, e.g. rolling in a drum, i » Single body can be separated. The superficially applied Iron ore that is partly produced during coking

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has been reduced 1st, is located after coking for the most part in the fine properties of coke »

This procedure, which is advantageous in itself, still has some shortcomings « The breaking strength of charcoal pellets is not very great and when they are poured into the Qfenkaramern one breaks relatively large portion and disintegrates into fine coal, which bakes together into irregular pieces when coked This reduces the yield of coke in the same piece "

When using Brikett® », this problem is largely eliminated.

Furthermore, when the coal becomes plastic, the surfaces of the initially essentially round carbon bodies largely lie against one another, so that the originally existing gaps are filled. This results in particular problems for the heating of the Ofenkairaner, since it has to be heated normally at the beginning of the coking process ₉ based on normal degassing sr auKihöhe and later, when the shrinkage occurs, the upper heating wall parts of the coking chamber may no longer be heated if one not accept decomposition of the valuable hydrocarbons in the escaping Entgasungsgasen in buying and also for waste heat will be the top Heizwandteile actually cooled · Xn this heating phase would.

There is a new process for the production of equal pieces of coke in horizontal or vertical coking furnace chambers using the same _9, preferably approximately round or pillow-like shaped, on the surface coated with fine iron ore, whereby for the application of the iron ore layer on the coal body, the briquettes or

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Can be pellets, finely ground iron ore or a finely ground mixture of coal with iron ore used is proposed, which is characterized in that the carbon body together with a fine-grain additive filled into the coking chamber and coked

The fine-grained additive can be non-baking or under-baking Coal, sand, ceramic material, another Si or SlO ^ and / or alumina or carbon containing substance be. It is also advantageous to use materials with high thermal conductivity, such as corundum or silicon carbide. This results in a shortening of the coking time · The joint, simultaneous filling of carbon bodies and additive happens in such a way that the Carbon bodies are embedded in the additive. So break proportionately fewer carbon bodies during the filling process, since they are to a certain extent on a cushion of additive fall. There are no longer any gaps between the carbon bodies, which then become plastic the carbon bodies are filled with a strong shrinkage in height of the carbon stock. These are through the Additive filled in the coal In the normal limits of about 4 to 6 percent. Keep the coal or coke bodies apart from normal coal shrinkage during coking to their original shape. When the finished coke batch is discharged from the coking furnace, the uniform ones fall Coke body with the additive together in the emptying container. A caking of the additive on the carbon bodies does not take place and the coke bodies fall on a cushion of the additive during emptying, whereby their mechanical stress is significantly reduced.

The fine-grained additive can be separated from the carbon bodies in a simple manner by sieving.

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When working with horizontal coking ovens, preference is given to adding fine coal, which reduces a certain amount Baking ability, so that a still cohesive, uniform coke cake from the oven chambers is expressed, which only has to hold together until he is in a trolley, see B. a fire truck, falls

When using vertical coking ovens, any baking ability of the additive can be dispensed with. In the same way, non-baking fine coal, sand or ceramic material can be added to the carbon bodies will. Due to the type of emptying, it is not important that an initially cohesive Coke cake is obtained

The coke breeze obtained can be used, for example, to make the coking coal from which the coal bodies to be coked are made to become emaciated »

Sand or ceramic material and the like can be used again after the dust has been separated off and as an additive can be used.

The carbon bodies can be pellets made of fine coal, which are in can be produced in a known manner in a pelletizing plate and by rolling in or sprinkling with fine iron ore.

Preferably, however, more solid briquettes with a roughly round or pillow-like shape are used as the carbon body. For the To produce these briquettes, roller presses are used, in the rollers of which half the briquette shapes are embossed. The fine Eiseners is sprinkled into the half-molds of the rollers.

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It is also advantageous to use magnetic rollers and a magnetic iron ore, for example magnetite, since this then adheres better to the half-forms and it is firmly embedded in the surfaces of the briquettes. ,

You can do this with hdss, e.g. pressed at 4oo to 45o ° C Briquettes that are free of binders, so-called Use hot briquettes.

However, it is also possible to use cold-pressed briquettes or to use without a binder.

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Claims (1)

Patent claims Process for the production of equal pieces of coke in horizontal or vertical coking _{furnace chambers using evenly s,} preferably roughly round or cushion-like, coal bodies coated on the surface with fine iron ore, whereby for the application of the iron ore layer to the coal bodies, the briquettes or pellets can be ^ Finely ground iron ore or a finely ground mixture of coal with iron ore is used ₉ characterized in that the coal bodies are filled into the coking furnace chamber together with a fine-grain additive and coked. 2. The method according to claim I _9, characterized in that low-baking coal is used as the fine-grain additive and the coking is carried out in horizontal coking kairimer η « 3. The method according to claim 1 _9, characterized in that non-baking coal, sand or ceramic material or another substance containing Si or SiO «and / or alumina or carbon is used as the fine-grain additive and the coking is carried out in vertical coking chambers. 4. Method according to claim 3 _f, characterized in that the additive used is one with high thermal conductivity, such as κ, Β * corundum or silicon carbide. 5 · The method according to claim I, characterized in ^ that coal pellets are used as the carbon body » ■ «- 7 - 6. The method according to claim 1, characterized in that that briquettes are used as carbon bodies " 7 · The method of claim 6 _t characterized in that one magnetic body for coal preparation roll presses and a magnetic iron ore, for example, "magnetite used · 8. The method according to claim 6, characterized in that hot-pressed briquettes, so-called Hcissbriquetten used. 9 · Method according to claim 6 and 7, characterized in that, that cold-pressed briquettes with or without a binder are used as the carbon body * 109882/0835