KR100651775B1 - Discharging apparatus for exhausting gas of coke oven - Google Patents

Abstract

An equipment for exhausting waste gas of a coke oven, which prevents heat loss of the coke oven and prevents damage of facilities within the coke oven due to thermal shock by flowing air of a high temperature into the coke oven and improves working environment and prevents breakdown of the facilities due to thermal expansion by flowing air around the equipment into the coke oven, is provided. An equipment for exhausting waste gas of a coke oven comprises: an exhaust pipe connected to a circulation path(11) installed below the coke oven; an air inflow part(20) installed on an outer surface of the exhaust pipe; a waste gas valve damper(30) which is connected to the exhaust pipe, and on which a blocking member for opening or closing the exhaust pipe; and a small flue(40) connected to the waste gas valve damper. The blocking member comprises an air blocking plate(34) and a waste gas blocking plate(36) installed above the air blocking plate. The air inflow part comprises a cover plate for controlling inflow of air and an air inflow part chain(23) for operating the cover plate. The equipment further comprises a reversing bar(50) installed on an upper portion of the waste gas valve damper to adjust opening and closing of the waste gas valve damper and the air inflow part. The waste gas valve damper comprises a waste gas valve damper chain(38) of which one end is fixed to the blocking member, and of which the other end is fixed to the reversing bar.

Description

Waste gas discharge device of coke oven {DISCHARGING APPARATUS FOR EXHAUSTING GAS OF COKE OVEN}

1 is a schematic perspective view of a coke oven according to the prior art.

Figure 2 is a cross-sectional view showing a waste gas discharge device according to an embodiment of the present invention.

3 is a partial perspective view showing a waste gas discharge device according to an embodiment of the present invention.

Figure 4 is a longitudinal sectional view showing a waste gas discharge device according to an embodiment of the present invention.

The present invention relates to a waste gas discharge device for a coke oven, and more particularly, to a waste gas discharge device for a coke oven provided with an air inlet.

The coke oven is a device for producing coke to be used as fuel in the blast furnace from coal as a raw material, the coke production process is very important because the quality of the coke has a great influence on the charter work in the blast furnace.

1 is a schematic diagram illustrating a coke oven according to the prior art. Referring to the drawings described above, the coke oven 100 is installed in both of the carbonization chamber 110 and the carbonization chamber 110 into which the raw material such as coal is charged, and combustion gas and air are injected into the carbonization chamber 110. ) And a heat storage chamber 130 for accumulating heat generated in the combustion chamber 120 and supplying the heat generated in the combustion chamber 120 to the carbonization chamber 110, and under the heat storage chamber 130. It is installed in the distribution channel 140, through which air and gas are distributed.

Combustion gas supplied to the combustion chamber 120 is introduced through a gas inlet box 160, and air is air inlet box 150 installed adjacent to the gas inlet 160. Inflow through)

The gas introduced through the coke oven 100 flows into the combustion chamber 20 through the flow passage 140 and the heat storage chamber 130 and is burned in the combustion chamber 120 to transfer heat to the carbonization chamber 110. In addition, the gas which has been burned in the combustion chamber 120 is discharged to the waste gas discharge device 180 through the heat storage chamber 130 and the flow passage 140.

Coal charged in the coke oven 100 is dried at high temperature, the tar and hydrocarbon-based compounds are pyrolyzed to generate coke and coke oven gas. At this time, the generated coke oven gas is the main component of hydrogen, sent to the Hwaseong factory through the riser, and after the gas purification process is reused as a heat source in the steel mill. On the other hand, tar from the coke oven is separated into tar and sludge through a tar process, and then produced as a product through a process for recycling.

On the other hand, the combustion chamber 120 is composed of a plurality, the two combustion chambers 120 are paired. In addition, the plurality of combustion chambers 120 are paired with each other and are divided into even-numbered combustion chambers 120 and even-numbered combustion chambers 120, and in order to maintain a constant temperature of the carbonization chamber 110, the odd-numbered combustion chambers 120 and Even-numbered combustion chambers 120 operate alternately. The alternating combustion of the odd-numbered combustion chamber 120 and the even-numbered combustion chamber 120 is called reversing. This reversal is performed by injection of combustion gas by a reversing device (not shown) consisting of a cylinder and a pull rod. By controlling the discharge of the waste gas, a reversing action is caused.

Here, the air introduced into the coke oven (100) is introduced into the air at a significantly lower temperature than the temperature in the course, cold air flows into the coke oven (100) to generate heat loss to raise the temperature of the coke oven again Not only does it require a lot of fuel, it also lowers its utilization.

In addition, a thermal shock is applied to the brick installed in the heat storage chamber 130 due to the inflow of cold air, which causes a problem of early crack formation or breakage of the brick.

The waste gas discharged to the waste gas discharge device 180 is cooled by transferring heat to the heat storage chamber 130 while passing through the heat storage chamber 130, but the temperature of the waste gas passing through the heat storage chamber 130 is also very high. Thermal expansion causes a failure of the facility or the hot heat causes a problem that the operator's work efficiency is reduced.

The present invention has been made to solve the above problems, an object of the present invention to provide a waste gas discharge device for introducing the preheated air into the coke oven.

In order to achieve the above object, the present invention is a device for discharging the waste gas generated in the coke oven, an exhaust pipe connected to the distribution passage installed in the lower portion of the coke oven, an air inlet installed on the outer surface of the exhaust pipe, the exhaust pipe It provides a waste gas discharge device comprising a waste valve damper connected to and connected to the waste valve and a small smoke connected to the waste valve damper.

The blocking member may include an air blocking plate and a waste gas blocking plate installed on the air blocking plate.

The exhaust pipe may have a structure in which two pipes connected to the distribution passage are joined at the waste damper side.

The air inlet may include a cover plate for controlling the inflow of air and an air inlet chain for operating the cover plate.

A reversing bar for controlling opening and closing of the waste toilet damper and the air inlet may be installed at an upper portion of the waste toilet damper.

The air inlet chain may have one end fixed to the cover plate and the other end fixed to the reversing bar.

The waste valve damper may include a waste valve damper chain having one end fixed to the blocking member and the other end fixed to the reversing bar.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a cross-sectional view showing a waste gas discharge device of the coke oven according to an embodiment of the present invention.

The waste gas discharge device according to the present embodiment includes an exhaust pipe 12 connected to a flow passage 11 formed at a lower portion of the heat storage chamber, an air inlet box 20 installed on an outer surface of the exhaust pipe 12, A waste valve damper 30 connected to the exhaust pipe 12 and provided with a blocking member 32 (shown in FIG. 4) for opening and closing, and a small smoke diagram 40 (shown in FIG. 4) connected to the waste valve damper 30. It includes.

The exhaust pipe 12 has a structure in which one end is connected to the distribution path 11, the other end is connected to the waste valve damper 30, and two pipes connected to the distribution path 11 are combined at the waste valve damper 30. Is done.

As shown in FIG. 3, an air inlet 20 is installed on an outer surface of the exhaust pipe 12. The air inlet 20 has a lower case 21 connected to the exhaust pipe 12, a cover plate 22 fixed to the lower case 21, and an inlet chain 23 that opens and closes the cover plate 22. It includes.

The cover plate 22 is fixed with a pin with respect to the lower case 21 so as to be rotatable with respect to the lower case 21, and an inlet for rotating the cover plate 22 on the upper surface of the cover plate 22. The chain 23 is installed.

Figure 4 is a schematic cross-sectional view showing a waste gas discharge device according to an embodiment of the present invention.

Referring to the drawings described above, the waste gas discharge device according to the present embodiment is an exhaust pipe 12 connected to the flow passage 11 formed in the lower portion of the heat storage chamber, and an air inlet portion installed on the outer surface of the exhaust pipe 12 ( 20), a waste valve damper 30 connected to the exhaust pipe 12 and provided with a blocking member 30 for opening and closing, and a small flue 40 connected to the waste valve damper 30.

The blocking member 32 for opening and closing the waste valve damper 30 includes an air blocking plate 34 and a gas blocking plate 36 installed on the air blocking plate 34, and the blocking plates 34. The waste valve damper chain 38 is installed at an upper portion of the blocking member 32 so that 36 can move in the vertical direction.

A reversing bar 50 for controlling opening and closing of the air inlet 20 and the waste valve damper 30 is installed above the waste valve damper 30, and the reversing bar 50 has a waste valve damper chain. 38 and inlet chain 23 are fixed. Therefore, the waste valve damper 30 and the air inlet 20 may be opened or closed due to the rotation of the reversing bar 50.

That is, when the waste gas is discharged, the reversing bar 50 is rotated so that the air blocking plate 34 and the gas blocking plate 36 are raised upwards, and the waste valve damper 30 is opened, and the air inlet 20 is It is closed. When the air is introduced, the reversing bar 50 rotates in the opposite direction, such that the air barrier plate 34 and the gas barrier plate 36 are lowered to close the waste damper 30 and the air inlet unit ( 20) is opened.

According to the above, the air inlet 20 is installed on the outer surface of the exhaust pipe 12 through which the waste gas is discharged, and the gas inlet (not shown) is installed on the opposite side of the portion where the waste gas discharge device is installed as in the prior art.

Therefore, the air inlet 20 may be installed in the exhaust pipe 12 so that air around the exhaust pipe 12 whose temperature is increased due to the waste gas may be introduced into the coke oven. That is, the air around the exhaust pipe 12 is preheated by the waste gas and maintained at a temperature of 20 ° C. to 30 ° C. higher than the air at the portion where the gas inlet is installed, and this air is introduced into the coke oven to prevent heat loss of the coke oven. Can be.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the range of.

As described above, according to the embodiment of the present invention, an air inlet may be installed in the waste gas discharge device to introduce high temperature air into the coke oven. Therefore, not only the heat loss of the coke oven can be prevented, but also the equipment in the coke oven can be prevented from being damaged by thermal shock.

In addition, as the air around the waste gas discharge device is introduced into the coke oven, fresh air is introduced from the outside around the waste gas discharge device, so that the temperature around the waste gas discharge device may be lowered than before, thereby improving the working environment as well as thermal expansion. It is possible to prevent the failure of the equipment.

Claims (7)

In the apparatus for discharging waste gas generated in the coke oven, An exhaust pipe connected to a distribution passage installed at a lower portion of the coke oven; An air inlet installed on an outer surface of the exhaust pipe; A waste valve damper connected to the exhaust pipe and provided with a blocking member for opening and closing; A small flue connected to the waste valve damper; Waste gas discharge device of the coke oven comprising a. According to claim 1, The blocking member is a waste gas discharge device of the coke oven comprising an air barrier plate and a waste gas barrier plate installed on the air barrier plate. According to claim 1, The exhaust pipe is a waste gas discharge device of a coke oven having a structure in which two pipes connected to the flow passage are joined at a waste side damper side. According to claim 1, The air inlet unit waste gas discharge device of the coke oven comprising a cover plate for controlling the inflow of air and an air inlet chain for operating the cover plate. The method of claim 4, wherein The waste gas discharge device of the coke oven is provided with a reversing bar for controlling the opening and closing of the waste toilet damper and the air inlet in the upper portion of the waste toilet damper. The method of claim 5, One end of the air inlet chain is fixed to the cover plate, the other end waste gas discharge device of the coarse oven is fixed to the reversing bar. The method of claim 5, The waste valve damper is a waste gas discharge device of the coke oven comprising a waste valve damper chain one end is fixed to the blocking member and the other end is fixed to the reversing bar.

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