UA79529C2 - Process for preparation of coke without trapping of chemical coking products - Google Patents

Abstract

The invention relates to the field of by-product coking industry. A process for preparation of coke without trapping chemical products of coking comprises loading coal charge to coking chamber, at that coking chamber is inclined at an angle corresponding to the angle of natural mowing of charge, and coal charge is shaped with forming layer of coal pie of same height by tamping of horizontal support outside the chamber and are loaded to the coking chamber with inclination under the angle corresponding to the inclination of coking chamber, and unloading the coke pie outside the chamber is performed by self-tail. The invention allows to increase the productivity of coking chamber and enhance the coke quality.

Description

Description of the invention

The invention belongs to methods of obtaining coke without trapping chemical products of coking and can find 2 applications in the coke industry.

There is a known method of obtaining coke, which is carried out in vertical coke ovens, which consists of the preliminary formation of a layer of coal cake of the same height outside the coking chamber by tamping the charge with the subsequent transfer of the coal cake into the coking chamber, the coking process, the discharge of hot coke | see, for example, stalemate. 5 6332957, IPC: C10831/10; C10845/02, op. 25.12.2000). 70 The disadvantages of the known method are the impossibility of achieving high productivity in the process of forming a vertical coal cake, which is due to the duration of the tamping process due to the limited working area of tamping and the impossibility, therefore, of increasing the number of simultaneously working mechanical tamping devices. In addition, the compaction of coal cake for vertical narrow-chamber coke ovens with a height of 5 m or more requires high compaction devices and complicates the compaction technology, 72 especially the lower layers of the coal cake. Also, when the coal cake is thrown into the coke chamber, it is impossible to preserve its integrity, measures are needed to prevent the cake from collapsing.

There is also a known method of obtaining coke, which is carried out in furnaces without trapping chemical products of coking, which consists of loading a coal charge into the coking chamber, forming a layer of coal cake of the same height by tamping on a horizontal substrate outside the chamber, which is introduced into the coking chamber on a non-cantilever conveyor, and after tamping, the coal cake is removed from the chamber, coking with the formation of volatile chemical products, their combustion and heat utilization, discharge of hot coke

See, for example, pat. 5 6059932, IPC: C10837/02; C10815/02, application. 9.05.2000).

The disadvantages of the known solution are the technical complexity and relatively long duration of the process, the need to cool the bed and the coal conveyor feeding into the red-hot chamber, and, in addition, the tamping process is carried out inside the red-hot chamber, that is, from the moment the coal charge is introduced into the chamber until ( 9 of the conveyor outlet from the chamber, degassing occurs and gases are released into the atmosphere, which worsens the environmental performance of the process, in addition, mechanical vibration is dangerous for the masonry of the chamber.

There is also a known method of obtaining coke without trapping chemical products of coking, which consists of loading the coal charge into the coking chamber, which has an inclination at an angle corresponding to the angle of the natural slope of the charge, the formation of a layer of coal cake of the same height, coking the coal charge with the formation of Ha volatile chemical products, their burning and utilization of heat, discharge of hot coke See, for example, application OA 200501301, IPC: С1089/00; C10О829/00, application 14.02.05). at

In terms of technical significance and the result achieved, the known technical solution is the closest to Ge"! of what is claimed. 3o In a known technical solution, the formation of a layer of coal cake of the same height over the entire floor area of the coking chamber is provided by the inclined location of the coking chamber and depends on the bulk weight of the specific coal raw material. The disadvantage of the known method is the dependence of furnace productivity and coke quality on the properties of specific raw materials. "

The invention is based on the task of creating a method of obtaining coke without capturing chemical products from coking, which allows to ensure high furnace productivity and coke quality by achieving the maximum density of coke cake and expanding the range of raw materials used. c" The task is solved in a method of obtaining coke without trapping chemical products of coking, which includes loading the coal charge into the coking chamber, which has an inclination at an angle corresponding to the angle of the natural slope of the charge, the formation of a layer of coal cake of the same height, coking of the coal charge with the formation of volatile chemical products, their burning and utilization of heat, unloading and hot coke; at the same time, the coal cake, which is formed by tamping on a horizontal bed outside the (Te) chamber, is tilted at an angle corresponding to the angle of inclination of the coking chamber, and the coal cake is unloaded by means of an adjustable self-elevator. Another distinguishing feature of the claimed method is: ka 20 - a coal cake, which is formed by tamping on a horizontal substrate outside the chamber, is tilted at an angle corresponding to the angle of inclination of the coking chamber, and the coal cake is unloaded by means of an adjustable self-elevator.

Based on the described state of the art, it follows that the indicated termination is new.

Loading the coal cake, which was formed by tamping outside the coking chamber, into the inclined coking chamber 25 from the inclined bed significantly reduces the loading time, technologically simplifies it, which allows

GF) to increase the productivity of the furnace. The method makes it possible to control the coking technology of rammed coal cakes according to the main parameters by means of adjustable changes in the composition of the coal charge, the density of the coal cake and its height, as well as the coking period, and to reduce the time the chamber remains in the open state. 60 The figure shows a diagram that explains the claimed method.

The method of obtaining coke without trapping the chemical products of coking is carried out in the coking chamber 1, the bottom of the chamber 2 of which is tilted according to the angle of the natural slope of the charge, outside the chamber 1 there is a tamping chamber C with a substrate 4, at the entrance to the chamber there is a door opening 5 on the machine side of the coking chamber 1, tamping devices 6, unloading devices 7, doors 8 from the coke side for adjustable self-lift to the extinguishing car 9. The method is carried out as follows.

Before loading the coal charge into the coking chamber 1, a coal cake of the same height is formed on the bed 4 of the tamping chamber C with the help of tamping devices 6. The substrate 4 is in a horizontal state at the level of the lower edge of the door opening 5 of the camera 1 on the machine side. To load the coal cake into the coking chamber 1, the side of the bed 4 opposite to the door opening 5 is raised in such a way that the angle of inclination of the bed 4 is equal to the angle of inclination of the coking chamber 1, that is, the bed 2 of the chamber and the bed 4 form one plane. Next, the regulated self-ascension of the coal cake to floor 2 of the coking chamber 1 is carried out. After its completion, the bed 4 with the tamping chamber C is returned to the horizontal position. Camera 1 closes. They carry out the process of coking the coal charge with the formation of volatile 7/0 Chemical products, their burning and subsequent utilization of heat. The finished coke is unloaded through the door 8 from the coke side into the extinguishing car 9.

The method is explained by the following examples.

Example 1. Coal charge, which has the composition: G-63.0 (gas.coal);

Zh-20.0 (fatty coal); OS-5.0 (heat-sintering); T-12.0 (lean) is loaded onto the substrate 4, with an area of 75, which is equal to the area of the coking chamber 75 mm 2 (width 5.0 m; length 15.0 m) and subjected to tamping with the help of tamping devices, forming a layer of coal cake 1 of the same height ,0--0.2 m. Tamping time - 1.5-2 minutes. To load the coal cake into the coking chamber 1, the side of the substrate 4 opposite to the door opening 5 is raised so that the angle of inclination of the substrate 4 is equal to the angle of inclination of the coking chamber 1, the bottom of the chamber and the substrate form one plane. Adjustable self-ascension of the coal cake to the coking chamber is carried out. Next, the coking process is carried out. As a result, the yield of volatiles is: M-31.8.

Coke quality: Mov-89.1; M410-5.5-5.3.

Example 2. For a charge that has the composition: G-60.0; ЖжЖ-20.0; 0C-10.0;

T-10.0; M-29.2-29.0. Ge

Coke quality: Mov-88.8; M10-5.9-6.0. at

Example 3. For a charge that has the composition: G-60.0; Zh-20.0; 0C-5.0; T1-10.0;

SS-3.0 (low-baking); PA-2.0 (semi-anthracite); M-27,1-27,2.

Coke quality: Mo5-90.0; M10-5.4.

The technical and economic advantages of the proposed method, in comparison with the prototype method, consist in providing high productivity of the furnace and the quality of coke, expanding the range of raw materials used. high school

F IF) formula of the invention (o)

A method of obtaining coke without trapping chemical products of coking, which includes loading a coal charge into the coking chamber, and the coking chamber is tilted at an angle that corresponds to the angle of the natural slope of the charge, and the coal charge is formed to form a layer of coal cake of the same height, coking of the coal charge with the formation of volatile chemical products, their combustion and utilization of heat, "discharge of hot coke, which differs in that the coal cake is formed by tamping on a horizontal substrate outside the chamber and loaded into the coking chamber with an inclination at an angle corresponding to the angle of inclination of the coking chamber, and the discharge of coal pie from the chamber is made by self-raising.

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