RU2312125C1 - Plant for dust-free discharging of coke out of ovens of coke oven bank - Google Patents

Abstract

FIELD: coal-tar chemistry, protection of environment.

SUBSTANCE: at discharging coke out of oven of coke oven bank door-dismounting machine platform is mounted. On said platform plant having coke guide 3 with jacket 2 is arranged along axis of oven to be discharged and quenching car 15 is arranged under lower part of said platform between protection blinds 8. Simultaneously evacuation is created in dust and gas accumulator 10 communicated through branch pipe 12 with collector of system for removing dust and gas. Dust-gas mixture formed at supplying coke to quenching car 15 is entrapped upward by means of hot air flow. Comparatively large dust particles colliding to surface of lower part of platform are fallen into body of quenching car 15 while fine particles of dust trapped by hot air flow are moved along lower part of platform to slit openings from which they penetrate into horizontal air conduits 5. Out of air conduits 5 through air conduits 11 fine particles are fed to dust and gas accumulator 10 and through branch pipe 12 they penetrate to system for removing dust and gas. Dust-gas mixture penetrated to jacket 2 is fed to box 13 and then to dust and gas accumulator 10.

EFFECT: significantly reduced contamination degree of environment with harmful dust-gas outbursts, lowered metal consumption of door-dismounting machine.

3 dwg

Description

The invention relates to the equipment of coke oven batteries with horizontal coking chambers, and more particularly to the installation of dust-free coke delivery from coke oven furnaces, which can be used in machines serving the battery on its coke side.

When coke is discharged from the coke oven through the coke guide basket into the quencher, the coke cake is destroyed and the resulting mixture of dust, gas and air, carried away by rising convection currents, rises into the atmosphere in the form of a black cloud polluting the environment.

Harmful emissions, polluting the environment, increase environmental stress and lead to intensive wear of coke oven equipment. Therefore, at present, the development of more advanced dust collection devices for the production of coke is an urgent task and give it priority, since the level of environmental pollution and the intensification of coke production depend to a large extent on it.

At modern coke-chemical plants, in order to protect the environment when burning hot coke from coke ovens to a fire truck, plants and devices with dust collecting umbrellas connected to dust and gas removal systems are widely used.

From the patent and scientific and technical information, several varieties of such plants and devices for collecting dust and gas emissions during coke production are known, which are used with varying success and require further improvement.

It is known, for example, a device for venting gases when unloading coke from a coke oven, which contains a dust collecting umbrella mounted on a coke guide and connected by means of a docking device to the collector of the dust removal system, and a casing forming slotted channels with the walls of the said umbrella. The latter have extensions in the upper part, connected to the collector by independent docking devices (see the description of the invention to the patent of Ukraine No. 12029, class СВВ 33/00, publ. 25.12.96).

The presence of a casing in the device increases energy consumption for exhausting harmful emissions of dust and gas. This is due to the fact that the device, in addition to the suction of dusty gases generated during the unloading of coke, also sucks atmospheric air through slotted channels, which increases the volumes of exhaust gases and thereby increases the load on the smoke exhaust systems of the dust removal system.

In addition, the presence of a casing increases the intensity of the device.

All this in general increases the cost of manufacturing and operating a known device.

Also known is the installation of dust-free coke delivery from coke oven furnaces (see the description of the invention to the patent of Ukraine No. 38619, class СВВ 33/00, publ. June 16, 2003), which is devoid of the disadvantages of the above device. The design of this installation by technical nature is closest to the claimed technical solution.

This installation contains a casing mounted on the platform of a door-sawing machine, inside of which a coke guide is located, and means for collecting dust and gas, which are made in the form of an umbrella fixed in the lower part of the casing with a gap in relation to the walls of the casing. The umbrella forms a cavity closed at the top, which, by means of connecting pipes installed on the side of the umbrella, communicates with the collector of the dust removal system.

However, the installation of such a design is not effective enough in operation when large amounts of dust and gas are emitted during coke production. This is due to the small size of the means for collecting dust and gas, in particular the umbrella, which does not allow to quickly evacuate the entire amount of released dust and gas emissions into the collector of the dust and gas removal system, which causes periodic emissions of dust and gas into the environment.

In addition, an installation of this type does not allow rational arrangement of the main devices of the door-sawing machine on its platform and, as a result, causes an increase in the dimensions of the platform, as well as the dimensions of the door-sawing machine.

The basis of the present invention is the task to improve the known installation of dust-free coke dispensing from coke oven furnaces, in which a new implementation of means for collecting dust and gas, as well as their new location on the platform of a door-lifting machine, would ensure reliable and efficient collection of dust and gas emissions during coke a rational arrangement of the main devices of the door-lifting machine on its platform and, as a result, significantly reduce the level of environmental pollution are harmful dust and gas emissions and reduce the metal consumption of a door-lifting machine.

The problem is solved in that in the installation of dust-free coke delivery from coke oven furnaces containing a casing mounted on a platform of a door-lifting machine, inside which a coke guide is installed, and means for collecting dust and gas during coke delivery, communicating with the collector of the dust removal system, according to the invention, means for collecting dust and gas are made in the form of horizontal ducts with suction slotted holes that are installed along the edges of the transverse sides of the platform, and the suction The crevice holes are located at the level of the lower part of the platform and are directed towards the casing, protective curtains, which are fixed on the lower part of the platform along its longitudinal sides behind the running trolleys, and the dust and gas collector installed in front of the casing, which is connected via air ducts to horizontal air ducts and communicates with the system manifold dust and gas removal.

The proposed technical solution for the installation of dust-free coke dispensing from coke oven furnaces in comparison with the known one provides more efficient dust and gas capture during coke production. This is achieved due to the new design of means for collecting dust and gas, in which the functions of the umbrella are performed by the lower part of the platform of the door-sawing machine and protective curtains. The latter allows you to quickly capture the dust and gas mixture formed during the coke in the extinguishing car, and send it to the suction slotted holes of the horizontal ducts, from where this mixture enters the dust and gas removal system.

In addition, the proposed implementation of means for collecting dust and gas makes it possible to rationally position the main devices of the door-lifting machine (door-lifting device, door and frame cleaning devices and coke guide) on the platform and thereby reduce the length of the machine and, as a result, reduce its metal consumption.

Further, the invention is fully disclosed on a specific example of its implementation with reference to the accompanying drawings, where:

figure 1 shows a General view of the installation, side view;

figure 2 is the same, view a in figure 1 with local sections;

figure 3 is the same in axonometric projection.

The dust-free coke delivery unit from the coke oven furnaces (see FIGS. 1 and 2) comprises a casing 2 mounted on the platform 1 of the door-lifting machine, inside of which a coke guide 3 is installed, and means for collecting dust and gas during coke delivery (see FIG. 1, 2 and 3). The latter include horizontal ducts 5 installed along the edges 4 of the platform 1 with suction slot holes 6, which are located at the level of the lower part 7 of the platform 1 and directed towards the casing 2, protective shutters 8, which are fixed on the lower part 7 of the platform 1 to the running trolleys 9, and a dust collector 10 mounted in front of the casing 2.

The dust and gas collector 10 by means of air ducts 11 is connected to horizontal air ducts 5 and communicates by means of a pipe 12 with a collector of a dust and gas removal system (not shown). In addition, a box 13 is attached to the dust collector 10, which is mounted on the top of the casing 2 and protrudes beyond its front 14 to exhaust dust and gas released in the upper part of the coke guide 3 when coke is emitted into the quencher 15.

To explain the operation of the installation in the drawings (see FIGS. 1 and 2), an additional thin line shows a fragment of a coke oven battery 16 with furnaces 17.

Installation works as follows.

At the time of coke delivery, a dust and gas removal system (not shown) is turned on, with which the necessary vacuum is created in the dust and gas collector 10, which is connected by means of a pipe 12 to a collector (not shown) of the specified system. At the same time, moving the platform 1 of the door-sawing machine, a coke guide 3 is installed with a casing 2 along the axis of the unloading furnace 17 and an extinguishing car 15 under the lower part 7 of the platform 1 between the protective shutters 8 (see Figs. 1 and 2).

Then, coke is unloaded from the furnace 17 through the coke guide 3 into the extinguishing car 15. When coke is discharged into the extinguishing car 15, a dust-gas mixture is formed, which is carried upward by a hot air stream. In this case, relatively large dust particles, hitting the surface of the lower part 7 of platform 1, fall into the body of the extinguishing car 15, and small dust particles entrained by the hot air stream move along the lower part 7 of the platform 1 to the suction slot holes 6 through which they enter into the horizontal air ducts 5. From where they come through the air ducts 11 to the dust collector 10 and through the nozzle 12 are carried into the dust and gas removal system (not shown). Similarly, the dust-gas mixture is captured, which breaks into the casing 2, from where it is carried up by the casing 2 and through an open opening protruding above the casing 2, enters the box 13, and then into the dust-gas collector 10.

After the coke is unloaded, the door-lifting machine with the installation is moved to the next coke oven being unloaded and the dust and gas collection cycle is repeated.

Claims (1)

Installation of dust-free coke delivery from coke oven furnaces, comprising a casing mounted on the platform of a door-sawing machine, inside which a coke guide is installed, and means for collecting dust and gas during coke delivery, communicating with a collector of a dust and gas removal system, characterized in that the means for collecting dust and gas are made in the form of horizontal ducts with suction slotted holes that are installed on the edges of the transverse sides of the platform, and the suction slotted holes are located on a level bottom of the platform and directed toward the casing, the protective curtains, which are fixed to the bottom of the platform along its longitudinal sides for the undercarriages and ahead of the set housing pylegazosbornika which by means of air tubes connected to the horizontal air ducts and communicates with a collector pylegazoudaleniya system.

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