KR20030030176A - Reversing apparatus for the coke oven - Google Patents

Abstract

PURPOSE: A reversing apparatus for coke oven is provided to cut off unnecessary supplying of cold air into combustion chamber of coke oven in order to prevent heat inside the combustion chamber from emitting and prevent supply gas from discharging to the outside in the non-combustion state. CONSTITUTION: The reversing apparatus for coke oven comprises an operating member capable of being reciprocated to open or close a reversing cock(60-1); a supporting member connected to the operating member so that the supporting member is reciprocated according to reciprocation of the operating member; and an air adjusting plate(170) which is connected to one side surface of the supporting member and traversely inserted into an inlet part of an air supply box(30) to adjust degree of opening of the inlet part according to reciprocation of the supporting member according to reciprocation of the operating member, wherein a certain shaped moving guiding member(3) on which a certain sized female groove is formed is fixed to the operating member, a connection member inserted into the female groove of the moving guiding member is installed at the lower part of the supporting member, and the connection member has a smaller cross sectional area compared to the female groove so that moving action of the supporting member is started when the connection member contacts both edges of the moving guiding member by moving the operating member, and wherein an opening and closing cover(80) installed at an inlet hole(30a) of the air supply box completely closes the inlet hole in the state that the air adjusting plate minimizes opening of the inlet part of the air supply box by unidirectional movement of the operating member.

Description

Reversing apparatus for the coke oven}

The present invention relates to a reversing device for a coke oven that discharges combustion gas and introduces new gas into a combustion chamber of a coke oven, and more particularly, cold air is supplied to a combustion chamber of a coke oven during a supply gas shutoff and reversing process. The present invention relates to a reversing apparatus for a coke oven, which can reduce the production cost of coke by preventing unnecessary supply of heat to prevent the discharge of heat in the combustion chamber and preventing the supply gas from being discharged unburned.

In general, the coke used as a heat source of the blast furnace is manufactured by distilling the coal (specifically, bituminous coal) charged into the carbonization chamber of the coke oven using the heat of combustion of the combustion chamber for a predetermined time and extruding the dried coal.

In the coke oven, combustion chambers are installed at both sides of the carbonization chamber, and in the combustion chamber, a combustion gas composed of coke oven gas and blast furnace gas is combusted with the incoming oxygen, and the resulting exhaust gas is generated. Is discharged to the outside through the exhaust valve at a predetermined time interval. In this way, the supply of the combustion gas is interrupted while the exhaust gas is discharged, and the supply of the combustion gas is resumed 20 or 30 minutes later. As such, the process of replacing the combustion gas after the supply of the combustion gas is cut off is called a reversing process. And, the reversing apparatus for performing this reversal process is composed of a reversing cock for opening and closing the gas supply passage and a cylinder for operating the reversing cock.

Permanently, a plurality of combustion chambers are installed per carbonization chamber, combustion gas is introduced into the combustion chamber through the distribution pipe and the gas supply passage, and external air is introduced into the combustion chamber through the air supply box and the air pipe. The combustion chamber of the coke oven is divided into an even-numbered combustion chamber and an odd-numbered combustion chamber according to the arrangement order in order to improve combustion efficiency, and correspondingly, the gas supply passage into which the combustion gas flows is also divided into even-numbered and odd-numbered rows. Therefore, even-numbered reversing coke installed at the inlet of the even-numbered gas supply passage is integrally operated by the first cylinder, and odd-numbered reversing cock installed at the inlet of the odd-numbered heat gas supply passage is integrally operated by the second cylinder. do.

That is, as shown in FIGS. 1 to 3, when the first cylinder 11 moves to the close side, the odd-numbered reversing cock connected to the first cylinder 11 by the first rod 11 a ( 60-1) is closed, the gas supply through the distribution pipe 20 is cut off. In this state, the small flue damper is opened to control the pressure of the odd-numbered combustion chamber 70. At this time, the cold external air flowing into the odd-numbered combustion chamber 70 through the air supply box 30 by the negative pressure generated in the stack (Stack) takes the heat of the adjacent even-numbered combustion chamber 71 and exits through the year. . This heat loss increases as the reversing process is repeated. Similarly, the even-numbered reversing cock 60-2 is opened and closed in conjunction with the operation of the second cylinder 12 by the second rod 12a.

In addition, the opening and closing cover 80 of the air supply box 30 and the exhaust valve 40 positioned in the upper part of the exhaust pipe are divided into even rows and odd rows corresponding to the combustion chamber, and each of the first opening / closing cylinders 10-1. ) And the second opening and closing cylinder 10-2. That is, referring to Figure 3, the air supply box 30 is installed in the lower portion of the combustion chamber to enable air communication, the opening and closing cover 80 is installed to be hinged. The first cylinder rod 30-1 is installed at the upper portion of the air supply box 30, and the opening and closing cover 80 is connected to the first cylinder rod 30-1 through the first chain 30-2.

Reference numeral 35 is a gas supply box, 36 is a cover for the gas supply box, 35-1 is a second cylinder rod connected to the second open and close cylinder (10-2), 35-2 is for the gas supply box It is a second chain connecting the cover 35 and the second cylinder rod (35-1).

At this time, when the opening / closing cover 80 is opened by the first opening / closing cylinder 10-1, a larger negative pressure is applied to the upper side of the combustion chamber so that cold external air flows into the combustion chamber, and thus the reversing process described above is repeated. The heat loss is increased. As a result, the combustion chamber temperature drops drastically, causing a decrease in coke quality and a unit increase.

On the other hand, according to the conventional external air control method, when the negative pressure acts on the odd-numbered combustion chamber 70 by the large-scale ventilation force, the raw gas (RAW GAS) introduced into the even-numbered combustion chamber 71 through the gap between the lead and the smoke. It flows into the adjacent hydrothermal combustion chamber 70. As a result, unburned raw gas is discharged to the outside through the flue, increasing the cost of coke production and causing serious air pollution.

The present invention has been made in order to solve the conventional problems as described above to prevent the external air flow into the combustion chamber in the state that the gas supply is blocked every time the reversing in the combustion chamber of the coke oven to prevent the negative pressure from acting In order to communicate external air by automatically closing the inlet of the air supply box in conjunction with the operation of the first cylinder and the second cylinder for opening and closing the sink cock, and automatically opening the inlet at the time when gas is supplied. It is an object of the present invention to provide a reversing device for a coke oven for opening and closing the inflow of the air supply box with the opening and closing operation of the reversing cock.

1 is a configuration diagram showing an operating state and a combustion system diagram of a coke oven reversing apparatus.

FIG. 2A illustrates a state in which odd-numbered reversing cock and even-numbered reversing cock are connected to the first rod and the second rod, respectively, and FIG. 2B is a cross-sectional view illustrating a connection state of the reversing cock and the rod.

3 is an operating state diagram showing a control state of a general combustion air.

Figure 4 is a perspective view showing a state in which the air volume adjustment frame is installed in the air supply box in accordance with the present invention.

5 is a perspective view showing a state in which an air adjusting plate is installed in the air volume adjusting frame according to the present invention.

Figure 6 is a side view of the support member of the air adjusting plate according to the present invention.

7 is a front view of the support member of the air adjusting plate according to the present invention.

8 is a view showing a state in which the opening and closing cover of the air supply box according to the present invention.

9 is a view showing a state in which the opening degree of the inlet of the air supply box is adjusted in conjunction with the closing operation of the reversing cock in accordance with the present invention.

10 is a view showing a state in which the inlet of the reversing cock and the air supply box is completely closed in accordance with the present invention.

<Description of Symbols for Major Parts of Drawings>

1: Air volume adjusting frame

3: moving guide member

80: opening and closing cover

100: body

140: pinion gear

170: air control plate

180: roller

190: connecting member

210: through hole

In order to achieve the above object, according to the present invention, the combustion gas introduced through the gas supply passage provided with the opening and closing reversible cock is provided in the inlet and the external air introduced through the air supply box is burned in the combustion chamber and The coking oven reversing device for controlling the inflow of external air introduced through the inlet of the air supply box in accordance with the opening and closing operation of the reversing coke in the coke oven for carbonizing the introduced coal to open and close the reversing coke A movable member capable of reciprocating, a support member connected to the movable member to enable reciprocating movement according to the reciprocating movement of the movable member, and the support member connected to one side of the support member according to the reciprocating movement of the movable member. The flow of the air supply box to adjust the opening degree of the inlet according to the reciprocating movement of the member Characterized in that the shielding member consisting of a plate which is inserted in a direction transverse to the portion.

Hereinafter, preferred embodiments of the present invention will be described with reference to FIGS. 4 to 6, and the same components as those in the prior art are assigned the same reference numerals.

First, the lower portion of the opening and closing cover 80 is provided with an air volume adjusting frame 1 fixed in close contact with the air supply box (30). The air volume adjusting frame 1 controls the air supply separately from the operation of the opening and closing cover 80 for the air supply box 30 according to the operation of the general reversing device. That is, the opening 1a having a size corresponding to the air inlet 30a of the air supply box 30 is formed in the air volume adjusting frame 1, and the air is supplied through the fastening hole formed in the upper portion of the opening / closing cover 80. It is coupled to the body of the box 30 by a fastening pin 81. One side of the air volume adjusting frame 1 is provided with a diaphragm 1b having through holes 1d and 1e formed therein. In addition, a rubber plate 1f is attached to the outside of the diaphragm 1b in order to minimize suction of cold air during exhaust gas discharge.

The plate-shaped air adjusting plate 170 is inserted from the outside through the through holes 1d and 1e formed in the air volume adjusting frame 1. One end of the outside of the air adjusting plate is supported by four guide rollers 150 located at the upper side and the body 100 of the support member movable laterally is coupled via the rubber plate 160 of the rectangular shape. A through hole 210 through which the first cylinder rod 30-1 connected to the first opening / closing cylinder 10-1 of the reversing apparatus passes through is formed at the upper center portion of the body 100. On the bottom surface of the first cylinder rod 30-1, the power transmission rack gear bar 120 fixed to a predetermined length is fixed.

The support rollers 200 and 200a are installed in the through holes 210 so as to support upper and lower portions of the first cylinder rod 30-1, respectively. The pinion gear 140 and the bearing block 140a interlocked with the power transmission rack gear bar 120 are installed inside the body 100. A plurality of guide rollers 180 for smoothly moving the lower end of the body 100 in the horizontal direction are installed at both ends of the body. In addition, the bottom surface of the body is provided with a rectangular connecting member 190 rounded corners.

Meanwhile, the first rod 11a and the second rod 12a respectively connected to the first cylinder 11 and the second cylinder 12 reciprocate to open and close the reversing cocks 60-1 and 60-2, respectively. It is possible to install. At this time, the first guide (11a) and the second rod (12a) is fixed to the movement guide member 3 is formed with a groove of a predetermined size is inserted into the lower end of the connecting member 190. The movement guide member 3 is generally formed in a cube shape, and the groove has a size larger than the cross-sectional length of the connection member 190.

Referring to the operation of the present invention made of such a configuration as follows.

In general, the combustion air for the coke oven is sequentially adjusted by the reversing apparatus in a continuous process. When the first cylinder 11 of the reversing apparatus operates, the first rod 11a connected thereto opens and closes the odd-numbered reversing cock 60-1. As the movement guide member 3 operates in conjunction with the operation of the first rod 11a, the air adjusting plate 170 operates so that the inflow amount of air introduced through the air inlet 30a of the air supply box 30 is increased. Will be adjusted.

For example, when the first cylinder 11 performs the closing operation to block the gas supply through the gas supply box 35, the first rod 11a moves in the direction of the arrow shown in FIG. The reversing cock 60-1 is closed. By the movement of the first rod 11a, the connecting member 190 and the body 100 of the support member inserted into the grooves of the movement guide member 3 installed on the first rod 11a are integrally moved. Done. As a result, the opening of the inlet portion of the air supply box 30 is adjusted by advancing the air adjusting plate 170 connected to the side of the body 100.

When the flushing time for replacing residual gas is completed, the air introduced through the air supply box 30 discharges exhaust gas generated by combustion with the gas in the combustion chamber, while the unburned feed gas is flue ( Exhaust valve 40 is closed to prevent the discharge through the (not shown). At this time, the opening and closing cylinder for alternating opening and closing the exhaust valve 40 by a predetermined time period, for example, the first cylinder rod (30-1) in accordance with the operation of the opening and closing cylinder (10-1) is the support member body 100 The upper through hole 210 passes through. As a result, the rack gear bar 120 for power transmission coupled to the first cylinder rod 30-1 is operated, and the rack gear bar 130 fixed to the body 100 through the pinion gear 140 combined therewith. ) Is operated to completely block the inlet of the air supply box 30 to block the negative pressure generated by the ventilation force of the flue. Therefore, the cold air sucked into the inlet of the air supply box 30 is prevented from being discharged through the flue, and cold air is prevented from entering the combustion chamber.

After a predetermined time has elapsed, the second cylinder 12 is operated to the open side to open the closed even-numbered reversing cock 60-2. That is, the second rod 12a connected to the second cylinder 12 is operated to open the even row reversing cock 60-2, and at this time, the groove of the movement guide member provided in the second rod 12a. The body 100 of the support member also moves through the connection member 190 inserted into the air control plate 170 to open the air inlet 30a of the air supply box 30. As a result, the air introduced through the air inlet 30a of the air supply box 30 is burned together with the gas in the combustion chamber, and the exhaust gas generated at this time is discharged through the flue.

According to the present invention, it is possible to keep the combustion chamber temperature constant by preventing only cold air from flowing into the combustion chamber when the supply gas is blocked, thereby preventing the heat loss of the combustion chamber, and also improving the coke quality and reducing the unit unit, and negative pressure of the combustion chamber. By preventing the problem, the raw gas generated by charging bituminous coal in the carbonization chamber is introduced into the adjacent combustion chamber, thereby eliminating the problem of being discharged into the year, thereby preventing air pollution.

The foregoing is merely illustrative of the preferred embodiments of the present invention and those skilled in the art to which the present invention pertains recognize that modifications and variations can be made to the present invention without departing from the spirit and gist of the invention as set forth in the appended claims. shall.

Claims (4)

The reversing in a coke oven where combustion gas flowing through a gas supply passage provided with an openable reversible cock and external air flowing through the inlet of the air supply box are burned in the combustion chamber and carbonized in the carbonization chamber In the reversing device for the coke oven, which can adjust the flow rate of the external air flowing through the inlet of the air supply box according to the opening and closing operation of the cock, A movable member capable of reciprocating to open and close the reversing cock; A support member connected to the movable member to reciprocate in accordance with the reciprocating movement of the movable member; It is connected to one side of the support member is made of an air adjusting plate inserted in the direction crossing the inlet of the air supply box to adjust the opening degree of the inlet according to the reciprocating movement of the support member according to the reciprocating movement of the movable member Reversing device for coke oven, characterized in that. The method of claim 1, The movable member is fixedly provided with a movement guide member having a predetermined shape in which grooves of a predetermined size are formed, and a lower portion of the support member is provided with a connection member inserted into the groove of the movement guide member, and the connection member is the groove. Reversing apparatus for a coke oven having a cross-sectional area of a size smaller than the size of the movable member is moved when the connecting member is in contact with the edge of the movement guide member is initiated to move the support member. The method of claim 2, Reversing apparatus for the coke oven, characterized in that a plurality of rollers are provided on the upper and lower parts of the body of the support member to which the connection member is connected to guide the reciprocating movement of the support member. The method of claim 1, Reversing cover for coke oven, characterized in that the opening and closing cover provided in the inlet of the air supply box in the state that the air adjusting plate minimizes the opening degree of the inlet of the air supply box by the one-way movement of the movable member Device.