JPS5940424Y2 - Extruder side dust collector in coke oven - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an extruder-side dust collector in a coke oven that collects and processes dust gas generated on the extruder side of the coke oven during the coke cake extrusion process.

Generally, during the extrusion process in a coke oven, a large amount of dust gas is generated on the guide wheel side of the furnace, but conversely, dust gas is also generated on the extruder side of the furnace when the furnace lid is removed in preparation for the operation of the extrusion ram. do.

That is, when the furnace cover is removed during extrusion, a large amount of high-temperature dust gas containing tar components and coke powder trapped in the furnace flows out and rises along the back tee.

Next, dust gas flows out during coke cake extrusion due to the extrusion ram entering the furnace, and dust gas containing a large amount of tar components is released from the furnace during cleaning of the furnace lid, which is usually performed in parallel with the extrusion ram operation. Occurs near the lid cleaning area.

Furthermore, when the extrusion ram returns, very hot gas is drawn out from the furnace.

That is, on the extruder side, dust gas is generated in various states during the work process from removing the furnace lid to closing the furnace lid after coke cake extrusion is completed.

Therefore, since dust gas is generated on the extruder side of the coke oven as mentioned above, a dust collector is necessary to prevent air pollution and deterioration of the working environment. The device is a so-called mounted type in which not only the dust collection hood but also the smoke duct connected to the hood, the dust collector, the blower, etc. are all installed on the extruder trolley, so it is large due to the installation space and weight. A device with a processing capacity could not be used, and for this reason, it was quite difficult to collect and dispose of the dust gas generated on the extruder side during extrusion without leaking.

In particular, in the case of such an extruder-mounted type, there is a problem that a gap is created between the dust collection hood and the coke oven, and a large amount of dust gas leaks from there. Not only is it necessary to suction and collect dust gas, but it is also necessary to suction and collect dust gas containing tar that is generated when cleaning the furnace lid that is removed by the lid removal mechanism, but it is not possible to suction and collect these dust gases efficiently. This idea was created in view of the above circumstances, and instead of using a large device designed to increase capacity, it uses a simple structure mounted on an extruder to eliminate problems that occur on the extruder side during the coke cake extrusion process. The dust gas produced by the coke oven can be reliably collected by suction without leaking to the outside through gaps between the coke oven and the coke oven. An object of the present invention is to provide an extruder-side dust collecting device for a coke oven, which allows suction and collection of dust gas generated at times to be carried out very effectively by concentrating it from the vicinity of the point where the salt dust gas is generated.

In other words, the extruder-side dust collection device in the coke oven of this invention collects dust gas generated on the extruder side during the coke cake extrusion operation of the coke oven from the dust collection hood installed on the extruder through a suction duct to the extruder. In the apparatus for collecting dust by conducting suction to a dust collector installed in the extruder, the dust collecting hood is disposed on the extruder near the coke oven side over an area corresponding to a plurality of ovens of the coke oven. A fixed hood that covers the extrusion ram and lid removal mechanism on the machine as well as the entire upper part near the lid cleaner is provided on the tip side of the fixed hood so that it can be moved forward and backward by a driving means such as a cylinder. and a movable hood that closes the gap between the coke oven and the coke oven while avoiding the backstay of the coke oven, and a central hood that partitions the inside of the fixed hood and surrounds the upper part of the axis of the extrusion ram. , a connection duct is provided extending from a portion of the fixed hood of the dust collection hood corresponding to the furnace lid cleaning location, a portion other than the central hood, and connecting to the suction duct, and connecting the furnace lid of the fixed duct to the suction duct. The connecting duct extending from the area corresponding to the cleaning area is provided with an opening/closing damper that is controlled to open at least when cleaning the furnace cover.

An embodiment of this invention will be described below with reference to the drawings.

First, in FIGS. 1 and 2, 1 is a coke oven having a large number of ovens 1a arranged in a row, 2 is an extruder, and 3 is a backstay.

This extruder 2 can run on rails 5, 5 via a lower truck 4, and is equipped with an extrusion ram 6 and a leveling beam 7, and is used to extrude coke cake from the lid 8 of the good 1a of the coke oven 1. It is provided with a lid removing mechanism 9 that is removed at the time of extrusion and closed when the extrusion work is completed.

As shown in FIG. 4, the lid removing mechanism 9 consists of a lifter holder 10 and a lid 11 held by the lifter holder 10.
The lifter 11 grabs the furnace lid 8 from the kiln 1a and pulls it out in a retreating manner, and then pivots along the trajectory shown by the arrow in FIG. 3 and carries it to a location away from the axis of the extrusion ram 6 It has become.

A furnace lid cleaner 12 for cleaning the furnace lid 8 with a scraper or the like is installed at a location where the furnace lid 8 is transported.

The dust collecting device of the present invention mounted on the extruder 2 includes a dust collecting hood 13 provided on the upper part of the extruder 2, a smoke duct 14, a dust collector 15, and a smoke blower 16.

The dust collection hood 13 has a fixed hood 17 and a central hood 18.
The fixed hood 17 is located near the coke oven backstay 3 on the extruder 2 and has a planar rectangular shape that spans about six ovens 1a of the coke oven 1. It has a structure that covers the extrusion ram 6, lid removing mechanism 9, and furnace lid cleaner 12 of the machine 2, and
As the top plate 17a goes from approximately the middle to the tip side (closer to the backstay 3 of the coke oven 1), it is lowered in a tapered manner, making the upper and lower middle smaller, so that it can be placed on equipment such as the lid removal mechanism 9 of the extruder 2. It is configured so that it can be brought as close to the backstay 3 as possible within a limited space with the dry main bracket 20 protruding from the coke oven 1 side.

Further, the concentration hood 18 is provided above the axis of the extrusion ram 6 by partitioning the interior of the fixed hood 17 with side walls 18a, 18a, and extends approximately to the middle of the fixed hood 17 with an intermediate position.

Further, the movable hood 19 is a flat plate provided on the top surface of the flat portion on the tip side of the top plate 17a of the fixed hood 17,
It has a length that spans a total of three parts: the kiln 1a corresponding to the axis of the extrusion ram 6 of the coke oven 1, and the kiln 1at1a adjacent to it on the left and right. It has a notch 19a at a location corresponding to each backstay 3 to allow entry, and a stopper plate 19b bent downward at the inner end of the notch 19a. The slide plate 21 provided on the top [17a] of the fixed hood 17 is held through an elastic body 22 such as a compression spring, and in this state the slide plate 21 is moved along the guide 23°23 to the cylinder 24. By reciprocating with the drive of .24, it can move forward and backward with respect to the fixed hoop 17, and when it moves forward, the stopper plate 19b comes into pressure contact with the backstay 3, and the gap between the fixed hood 17 and the coke oven 1 is closed. (Backstay 3
...including between each other).

A blind plate 25 is provided between the backstays 3 of the coke oven 1, and the movable hood 19 extends above the blind plate 25.

The smoke suction duct 14 is arranged from a position parallel to the rear side of the dust collection hood 13 so as to make a detour around the upper part of the extruder 2 as shown in FIG.

Here, the starting end of the smoke suction duct 14 and the dust collection hood 13 are a plurality of independent connection ducts protruding from different parts of the hood.

They are connected by 26B and 26C.

In other words, the connection duct 26A is connected to one end corner of the fixed duct 17 of the dust collection hood 13 (the open end on the opposite side from the furnace lid cleaner and nera 12), and the connection duct 26B is connected to the inside of the fixed duct 17. connected to the central hood 18 of the connecting duct) 2
6C is the other end of the fixed duct 17 (furnace cover cleaner 1
2).

Each connecting duct 26A, 26B, 26C has a manual air volume adjustment damper 27A, 27B, 27C.
A connection duct 26C corresponding to the 12 furnace lid cleaners is equipped with an opening/closing damper 28 which is automatically controlled to open and close by a timer or an operation signal from an appropriate extrusion device.
is installed.

Further, the smoke suction duct 14 has a temperature sensor 29 for the internally circulating gas at a portion closer to the terminal end thereof, and a temperature sensor 29 located closer to the dust collector 15 than the temperature sensor 29.
It has a cooling outside air intake 31 with a damper 30 whose opening/closing is controlled by a signal.

The end of the smoke suction duct 14 is connected to a dust collector 15 provided on the extruder 20 carriage 4, and is subjected to smoke suction power by the operation of the smoke suction blower 16.

The dust collector 15 is generally called a bag filter, which collects dust using bugs.

To describe the operation of the dust collector having the above-mentioned configuration, during coke oven extrusion work, when the extruder 2 moves to a fixed position where the axis of the extrusion ram 6 is aligned with the desired kiln 1a and stops, first, The movable hood 19 advances through the slide plate 21 due to the drive of the cylinders 24, 24, closes the gap between the fixed hood 17 and the coke oven 1, and closes the backstay of the window 1a and the ovens 1a, 1a on both sides thereof. 3...Preventing dust gas from leaking upwards between the two.

The movable hood 19 is pressed against the slide plate 21 by the elastic body 22 when moving forward, so that it comes into pressure contact with the backstay 3 side of the coke oven 1, thereby achieving a reliable seal.

After the movable hood 19 advances, the lid removing mechanism 9 of the extruder 2 starts operating, and when the furnace lid 8 of the window 1a is removed and carried to the furnace lid cleaning location, the extrusion ram 6 is driven and 1a and push out the coke cake onto a guide wheel (not shown), and in parallel with this, the furnace lid 8
is cleaned by the furnace cover cleaner 12.

Then, upon completion of coke cake extrusion, the extrusion ram 6 is moved to the kiln 1.
The furnace lid 8 of the kiln 1a is attached using a jam cleaner (not shown) after cleaning the sealing surface, and then the furnace lid 8 is returned from the cleaner 12 by the lid removal mechanism 9. Then, the window 1a is fitted into the kiln opening and the lid is closed, and then the movable hood 19 is retreated and the extruder 2 is moved in preparation for the next extrusion operation.

This completes the coke cake extrusion work in one kiln 1a, but during the extrusion work process, in the dust collector of the present invention, the movable hood 19 is advanced as described above to seal the gap between the fixed hood 17 and the coke oven 1. At the same time, the smoke blower 16 is operated to provide a smoke suction effect,
First, when removing the lid for the first time, the opening/closing damper 28 is fully opened. When the lid is removed, a large amount of dust gas containing tar and coke powder that has been trapped inside the furnace 1a flows out and rises along the pack stick. The central concentration hood 18 installed as close to the source of dust-containing gas as possible collects the smoke relatively strongly and effectively, conducts it from the connecting duct 26B to the smoke duct 14, and diffuses upward to both sides. The dust gas is collected by the fixed hood 17 and conducted to the smoke duct 14 from the connecting ducts 26A and 26C.

With this, a large amount of dust gas emitted when the lid is removed can be effectively collected and passed to the dust collector 15 for disposal.

Next, when the extrusion ram is advanced to extrude the coke cake in the kiln 1a, the amount of dust gas flowing out from the kiln mouth will be slightly smaller, but since the furnace cover is normally cleaned in parallel with the extrusion, The opening/closing damper 28 is left fully open, and the dust gas flowing out from the kiln mouth during extrusion is collected at one end of the concentration hood 18 and the fixed hood 17, and is then transferred from the connecting ducts 26A and 26B to the smoke duct 14.
The dust gas containing a very large amount of tar generated by cleaning the furnace lid 8 is passed through the cleaner 12.
The smoke is collected at the other end corner of the fixed hood 17 corresponding to the vicinity and conducted from the connecting duct l-26C to the smoke suction duct 14.
To effectively collect dust without leaking dust gas accompanying cleaning of the furnace cover.

Next, when the lid cleaning is completed, the opening/closing damper 28 is fully closed, thereby increasing the smoke suction power of one end corner of the fixed 7-door 17 and the central hood 18, and in this state, the extrusion ram 6 is retreated and the lid is closed. The very high temperature and large amount of dust gas generated when the extrusion ram 6 retreats and the dust generated during the subsequent lid closing are effectively sucked and captured at one end of the fixed 7-door IT and the central hood 18. Collect and process for dust collection.

In addition, when collecting the dust gas mentioned above, each connection duct 2
6A, 26B, 26C air volume adjustment damper 27A, 27
The openings of B and 27C are manually adjusted in advance to obtain an air volume corresponding to the amount of dust generated in the hood portion to which they are connected, so that more effective smoke collection can be achieved.

Also, when the extrusion ram 6 retreats, very high temperature dust flows out from the inside of the kiln 1a, but if the dust is passed to the bag filter dust collector 15 at that high temperature, the furnace cloth will be burned out. In order to keep the dust gas as low as possible before entering the dust collector 15, the smoke suction duct 1
4 is made longer, and the temperature is detected by the temperature sensor 29 in the smoke suction duct 14, and the damper 30 is opened in response to the signal, and the outside air is taken in from the outside air intake port 31 to cool the duct gas and pass it to the dust collector 15. I'm trying to put it in.

Since this idea was developed as described above, the dust gas generated on the extruder side during the coke cake extrusion process can be removed from the coke oven by using a simple configuration mounted on the extruder without using large equipment with increased capacity. It is possible to reliably suction and collect dust without creating gaps between it and leaking it to the outside, and also to suction dust gas generated when extruding coke cake, cleaning the furnace lid, and returning the extrusion ram. This is a highly practical extruder-side dust collecting device in a coke oven, which allows collection to be carried out very effectively by concentrating the collection near the respective dust gas generation points.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view, Fig. 2 is a side view of the same, Fig. 3 is an enlarged plan view of the main part, and Fig. 4 is an enlarged plan view of the main part. FIG. 3 is an enlarged side view partially cut away. 1... Coke oven, 1a... Kiln, 2... Extruder,
3... Backstay, 6... Extrusion ram, 8... Furnace lid, 9... Lid removal mechanism, 12... Furnace lid cleaner,
13... Dust collection hood, 14... Smoke suction duct, 15.
...Dust collector, 16...Smoke blower, 11...Fixed hood, 18...Centralized hood, 19...Movable hood, 26A, 26B. 26 C-i continuous takt, 27A, 27B, 27C-
...Air volume adjustment damper, 28...Opening/closing damper.

Claims (1)

[Scope of claim for utility model registration] (υ Dust gas generated on the extruder side during coke cake extrusion work in a coke oven is passed from the dust collection hood installed on the extruder to the dust collector installed on the extruder through a suction duct) In a device that collects dust by conducting suction, the dust collecting hood is disposed on the coke oven side of the extruder over an area corresponding to a plurality of kilns of the coke oven. A fixed hood that covers the ram and lid removal mechanism and the upper part of the oven lid near the IJ-ner, and a fixed hood that is provided on the tip side of the fixed hood so as to be movable forward and backward by a driving means such as a cylinder, so that when moving forward, the fixed hood and the coke oven are connected. A movable hood that closes the gap between the coke ovens while avoiding the backstay of the coke oven, and a central hood that surrounds the upper part of the extrusion ram axis by partitioning the inside of the fixed hood. A portion of the fixed hood of the dust collection hood corresponding to the furnace lid cleaning portion, a portion other than the central hood, and a connecting duct extending from the central hood and connecting to the suction duct are provided, and a portion corresponding to the furnace lid cleaning portion of the fixed duct and An extruder-side dust collector in a coke oven, characterized in that a connection duct extending from a corresponding part is provided with an opening/closing damper that is controlled to open at least when cleaning the oven lid. (2) Connection duct The extruder side dust collection device in the coke oven described in claim 1 of the utility model registration claim is characterized in that each device has an air volume adjusting damper.