RU2785812C2 - Installation for dust-free issue of coke from coke battery furnaces - Google Patents

Abstract

FIELD: coke industry.

SUBSTANCE: invention relates to the coke industry, in particular to devices for removal of dust-gas products formed in coke issue from coke furnaces to a moving coke-drying car, in particular to an installation for dust-free coke issue from coke battery furnaces. The installation contains a door-removable machine with a dust-suction hood, a gas removal collector, and a smoke exhauster, the dust-suction hood equipped with a casing installed inside it and closed from above, placed with a slot gap relatively to hood walls, while the slot gap is made with a size providing coming of a dust-suction mixture at a speed from 40 to 60 m/s and a volume, which is 1.1-1.21 of a volume of primary sucked air. Moreover, the hood is made of an asymmetrical shape in a lower part within a length of the coke-drying car along the course of movement of the car, in a transverse part, at an end of the hood, an additional slot channel is made with its removal to a central upper part of the hood. At the same time, a fan is installed on the additional slot channel, on an upper part of a gas duct, for creation of thrust in the lower part of the hood, in the upper part of the casing, left and right from sides of the hood, a row of vertical longitudinal windows is made, slot gates are made with the same windows. Moreover, a width of windows is equal to jumpers between them, so that, when moving horizontally left or right, slot windows are opened or closed.

EFFECT: increase in the efficiency of selection of dust-gas emissions into the atmosphere and reduction in metal consumption of a hood.

1 cl, 4 dwg

Description

The invention relates to the coke-chemical industry, in particular, to devices for removing dust and gas products formed during the issuance of coke from coke ovens to a moving coke quenching car.

Known and used both in domestic and foreign practice, installations for dust-free issuance of coke from coke ovens (hereinafter installation).

Known, in particular, the installation, including a door remover with a dust suction umbrella, a collector for removing dust and gas products mounted on supports along the front of the coke oven battery parallel to the movement of the door remover.

Analog: A.S. No. 947173 class. C10B 33/04.

The disadvantage of this invention is that the umbrella installed on the door-removing machine does not have slotted channels, therefore, when unloading coke from the oven into the coke quenching car, a large amount of atmospheric air enters the coke scattering zone into the car, which contributes to the combustion of a certain amount of coke.

Known patent No. 2177976 class. C10B 33/00.

A device for reducing harmful emissions during the issuance of coke from coke ovens.

This invention has a slotted hood, but is applicable only for the issuance of coke to the coke car from one setting.

Prototype: Patent №2004567 class. С10В 33/04

The plant for dust-free dispensing of coke from coke oven battery ovens includes a door-removing machine with a dust suction hood, a collector for removing dust and gas products installed on supports along the front of the coke oven battery ovens, a dust collecting device and a smoke exhauster.

The disadvantage of this installation is that the unloading of coke from the coke oven occurs in the movement of the coke quenching car, while the cars are of different lengths, for example, from 12, 14, 16 meters; for efficient selection of the dust-gas mixture, the length of the umbrella must overlap the length of the car, and this entails a large metal content of the umbrella, which increases the load on the door-removing machine and the working platform.

The purpose of this proposal is to increase the efficiency of collecting dust and gas emissions into the atmosphere and reduce the metal consumption of the umbrella. This is achieved due to the fact that in order to reduce the metal consumption and the efficiency of removing harmful emissions into the atmosphere when unloading coke from the coke oven, the umbrella is made of an asymmetric shape in the lower part within the length of the coke quenching car in the direction of its movement, and in the upper part on the edge of the umbrella is made an additional slotted channel with its outlet to the central upper part of the umbrella to achieve the optimal efficiency of the selection of the dust-gas mixture from the coke unloaded from the coke oven. A fan is installed on an additional slotted channel in the upper part of the gas outlet to create draft in the lower part of the umbrella. The slot gap is made with a size that ensures the inflow of a dust-gas mixture at a speed of 40 to 60 m/s and a volume of 1.1-1.21 of the volume of the initially drawn air.

Since the coke is unloaded from the oven into the long-length coke quenching car in motion, there is a violation of the constant gap along the perimeter between the umbrella and the end walls of the car, constant movement in the umbrella zone, as a result of which the traction balance of the suction of the removed dust and gas mixture from the coke unloaded into the car body is disturbed , therefore, to stabilize and optimize the gas flows of the left and right slotted channels, on the casing in the upper part on the left and right sides of the umbrella, vertical windows are made, closed by slotted gates, and the width of the windows is equal to the width of the jumpers between them.

When moving the slotted gate horizontally to the left or right, the vertical windows overlap or open.

Adjustment of gas flows by gate valves occurs visually until the maximum efficiency of gas extraction from the unloaded coke from the coke oven is determined.

Application of the proposed invention in the coke industry will increase:

1. Efficiency of selection of dust and gas emissions into the atmosphere.

2. Significantly reduce the metal consumption of the umbrella.

Illustrations:

Fig. 1 Cross section of the installation.

Fig. 2 The main view of the installation.

Fig. 3 Side view of the additional slotted channel.

Fig. 4 Slot gate.

The installation consists of a door-removing machine 1, a coke oven battery 2, an umbrella 3, inside of which a casing 4 is fixed with slotted gaps along the perimeter 5 of the umbrella 3, in the upper part of which slotted windows 6 are made frontally on the left and right, on a separate lower part of the umbrella 3 is installed on at the end there is an additional slotted channel 7 with a partition 8, a branch pipe 9 for removing the dust-gas mixture to the upper part of the umbrella 3, a fan 10, slotted gates 11 with longitudinal windows 12, a dust extraction collector 13.

The installation works as follows.

Before unloading the coke from the coke oven, the quenching car is set to its initial position, see Fig. 2. When the coke begins to be unloaded into the car, the car slowly starts to move under the umbrella, so the coke is evenly distributed along the length of the car body. The umbrella is displaced towards the movement of the car in order to cover the area of the car as much as possible at the time of coke unloading, and therefore to minimize the possibility of emission of harmful emissions into the atmosphere.

Claims (1)

Installation for dust-free delivery of coke from coke ovens, containing a door-removing machine with a dust-extraction hood, a gas exhaust manifold and a smoke exhauster, a dust-exhaust hood equipped with a casing closed from above installed inside it, placed with a slot gap relative to the walls of the umbrella, while the slot gap is made with a size that provides the dust-exhausting mixture enters at a speed of 40 to 60 m/s and a volume of 1.1-1.21 of the volume of the initial sucked-in air, characterized in that the umbrella is made of an asymmetric shape in the lower part within the length of the coke-extinguishing car in the direction of the car, in the transverse part on the edge of the umbrella, an additional slotted channel is made with its outlet to the central upper part of the umbrella, on the additional slotted channel on the upper part of the gas outlet, a fan is installed to create draft in the lower part of the umbrella, in the upper part of the casing, on the left and right sides of the umbrella, a number of vertical longitudinal windows, with the same windows slotted gates are installed, and the width of the windows is equal to the jumpers between them so that when moving horizontally to the left or right, the slotted windows open and close.

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