RU2350643C1 - Method for production of coke and device for its realisation - Google Patents

Abstract

FIELD: technological processes; metallurgy.

SUBSTANCE: invention is related to the field of ferrous metallurgy and may be used in coke production. Method for coke production by sublimation of coking coals, includes preparation of charge for coking, prepared charge with even layer of up to 1 m is loaded to moving container placed into coking chamber, and sublimation is carried out by heating of loaded layer to the temperature of 1100°C by radiation of several optical quantum oscillators with high density of energy - lasers installed above conveyor, with production of coke and gases removed from coking chamber. Device for method realisation comprises coking chamber with gas bleeder installed in it and moving container with the possibility to load prepared charge on it with even layer of up to 1 m height, at that rate of conveyor motion is inversely proportional to layer height; above conveyor several optical quantum generators of higher energy density - lasers - are installed; downstream coking chamber cooling chamber is installed, lower part of which comprises the second conveyor for unloading of ready coke.

EFFECT: reduction of capital expenses, lowering of coke prime cost and increase of installation efficiency for coke production.

2 cl, 1 dwg

Description

The invention relates to the field of ferrous metallurgy and can be used in the production of coke.

The closest in technical essence to the proposed method is a method for producing coke by dry distillation of coking coal in coke ovens. A coke oven is a chamber lined with refractory material, 5 m high, 15 m long and 0.4 m wide. Coke ovens are assembled in coke oven batteries. The mixture, consisting of coking coal, is loaded into the chamber from above and heated without air to a temperature of 1100 ° C. The furnace is heated by blast furnace and coke oven gas, burned in the walls between the chambers. The temperature of the refractory masonry in the heating walls reaches 1420 ° C. The coking period lasts 14.5-16 hours (Voskoboinikov V.G., Kudrin V.A., Yakushev A.M. General metallurgy. - M.: Metallurgy, 1998. - P. 62-64).

The disadvantages of this method include the large capital costs for the construction of coke oven batteries, the large current costs for heating the chambers and high heat losses in the coke oven batteries, as well as their low productivity.

The objective of the invention is to reduce capital costs, reduce the cost of coke and increase the productivity of the installation for producing coke.

The technical result is achieved by the fact that in the method for producing coke by dry distillation of coking coal, which involves preparing the charge for coking, the prepared charge is evenly loaded with a height of up to 1 m onto a moving conveyor placed in the coking chamber and the loaded layer is heated to a temperature of 1100 ° With the emission of several optical quantum generators of high energy density - lasers located above the conveyor. A device for producing coke containing a coking chamber with a moving conveyor installed in it, onto which a prepared mixture is loaded in an even layer up to 1 m high and the loaded layer is heated to a temperature of 1100 ° C by radiation of several high-density optical quantum generators - lasers located above the conveyor, the conveyor speed is inversely proportional to the layer height, and the finished coke from the moving conveyor from the coking chamber enters the cooling chamber, in the lower part of which It sets the second conveyor for unloading the finished coke.

The invention has novelty, which follows from a comparison with the prototype, inventive step, since it obviously does not follow from the existing level of technology, it is practically feasible in existing factories of ferrous metallurgy.

The drawing shows a device for implementing the proposed method, where

1 - loading funnel;

2 - coking chamber;

3 - conveyor coking chamber;

4 - boot visor;

5 - lasers;

6 - gas outlet;

7 - finished coke;

8 - cooling chamber;

9 - conveyor cooling chamber;

10 - railway carriage;

11 - pipe for supplying a cooling agent;

12 - discharge opening.

The proposed method for producing coke is as follows. The prepared charge, consisting of coking coal (coke, steam-fat, steam-sintering, etc.), is loaded through a loading funnel 1 in an even layer up to 1 m high into a coking chamber 2 onto a moving conveyor 3. If necessary, change the height of the loaded layer by lifting or lowering the boot visor 4. The speed of the conveyor is regulated depending on the height of the charge layer. With increasing layer thickness, the conveyor speed decreases. Above the conveyor are several optical quantum generators of high energy density - lasers 5 (Physical Encyclopedia. - M .: Soviet Encyclopedia, 1990, Volume 2. - P.549), the radiation of which heats the loaded layer without air access to a temperature of 1100 ° C. At this temperature, dry coking coals are distilled. The gases generated during the distillation process are removed from the coking chamber through a special gas exhaust 6. The finished coke 7 from the conveyor 5 enters the cooling chamber 8, in the lower part of which there is a conveyor 9 for unloading into the railroad car 10. Air supply is prevented by a charge layer in the loading funnel, as well as a layer of finished coke in the cooling chamber and on the conveyor for unloading. Additional cooling of the finished coke is carried out by supplying water or inert gas (N ₂ ) through the pipe 11. Water vapor or inert gas leaves the cooling chamber together with the finished coke through the discharge opening 12. Thus, the proposed method and device for its implementation allows to obtain the finished coke in a continuous way, which leads to an increase in plant productivity, a significant reduction in capital costs for producing coke and a decrease in its cost.

Claims (2)

1. A method of producing coke by dry distillation of coking coal, comprising preparing a charge for coking, characterized in that the prepared charge is evenly loaded with a layer up to 1 m high onto a moving conveyor placed in a coking chamber, and dry distillation is carried out by heating the loaded layer to a temperature of 1100 ° With the radiation of several optical quantum generators of high energy density - lasers located above the conveyor, to produce coke and gases removed from the coking chamber. 2. A device for producing coke, comprising a coking chamber with a gas outlet installed in it and a moving conveyor with the possibility of loading a prepared mixture onto it with an even layer up to 1 m high, and the conveyor speed is inversely proportional to the layer height; above the conveyor are several optical quantum generators of high energy density - lasers; after the coking chamber there is a cooling chamber, in the lower part of which a second conveyor is installed for unloading the finished coke.