JPH0364392A - Split charging method for coke dry fire extinguishing system cooling tower - Google Patents

Abstract

PURPOSE:To make the amt. of coke storage uniform in a plurality of cooling towers and to thereby make the amt. of steam generation in a waste heat boiler uniform by keeping a damper at an intermediate degree of opening to leave a part of a red-hot coke and feeding it into another cooling tower in feeding the red-hot coke in a coke bucket into the cooling tower. CONSTITUTION:When a red-hot coke in a coke bucket is fed into a cooling tower of a plurality of cooling towers of a dry type coke quench apparatus, feeding of the coke is performed for a specified time while a damper of the coke bucket is kept at an intermediate degree of opening (e.g. feeding at an opening of 1/2 for 6sec) and the damper is closed while a part of the coke is left. The remaining coke is then fed into another cooling tower.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention is a coke dry fire extinguishing system cooling system for equalizing the amount of coke held in a plurality of cooling towers and equalizing the amount of steam generated from waste heat boilers. This article relates to a method of dividing charging into a column.

[Prior Art] In a coke oven, red-hot coke discharged from a coke oven 20 in FIG. (abbreviated as) 23,
Red-hot coke from coke bucket 6 is charged into CDQ23, and it is extinguished by the cooling gas blown into CDQ23, and the high-temperature cooling gas is guided to a waste heat boiler (not shown) for heat recovery. It is being done. CDQ2 of red hot coke by coke bucket 6
The charging to No. 3 is carried out as follows. In FIG. 2(A), the coke bucket 6 of the coke car is hoisted by the hoisting drum 2 of the crane 1 and brought above the cooling tower upper hopper 12 of the CDQ23, and as shown in No. 211ffl (B), the hanging beam 4 is lowered. The bottom of the coke bucket 6 is brought into contact with the baguette holder 11. Furthermore, unwinding is continued, the damper 9 is fully opened, and the entire amount of red-hot gas in the packet (approximately 28 T) is charged into the cooling tower. The time required from fully opening to completing charging is 6 seconds. Even when there are two cooling towers per coke 2 bucket as shown in FIG. 3, the entire amount of coke in the packet is charged into one cooling tower as described above.

[Problems to be Solved by the Invention] In the conventional charging method, in which the entire amount of red-hot coke in the packet is discharged into the cooling tower, when there are multiple cooling towers, it is difficult to reduce the amount of coke held in one cooling tower. As the fluctuation increases, the fluctuation in the amount of steam generated by the attached waste heat boiler increases, and an imbalance occurs in the amount of coke held between the cooling towers, resulting in unevenness in the amount of steam generated between the attached waste heat boilers. . Another problem was that it took a long time to remove coke from the cooling tower in order to repair the coke dry fire extinguishing system.

[Means for Solving the Problems] The present invention attempts to solve the above-mentioned problems, and when charging red-hot coke in a coke bucket to a cooling tower of a plurality of coke dry digesters, the coke bucket The damper is kept partially open and charged for a predetermined period of time, the damper is fully closed leaving a part of the coke in the coke bucket, and the remaining coke is charged to other cooling towers. This is a method of dividing coke into a dry coke extinguishing system cooling tower.

[Function] When charging red hot coke into a coke bucket, the damper is opened, for example, by 1/2, and after being discharged for 6 seconds (conventional fully open discharge time), when the damper is closed, about 14T remains in the packet. This remaining 14T can be used to charge other cooling towers.

Therefore, variations in the level of red hot coke held between cooling towers and fluctuations in the level of red hot coke held in each cooling tower can be reduced.

[Example] Examples of the present invention will be described in detail below. FIG. 1 is a detailed explanatory diagram of the present invention. 1 is the cooling tower 23 shown in the third section
2 is a winding drum, 4 is a hanging beam,
5 is a hanging hook attached under the hanging beam, 7 is a hanging rod of the coke bucket 6, and 8 is a damper opening/closing link connecting fitting. 9 is a damper, 1o is a link for opening and closing the damper, and 11 is a packet receiver that receives the load of the coke bucket 6.

The red-hot coke from the coke bucket 6 is charged into the cooling tower in the same way as conventional methods. first.

The coke bucket 6 transported by the coke car 21 to the turntable 24 near the cooling tower is lifted by the crane 1 and brought to the top of the cooling tower.The hoisting drum 2 of the crane 1 is lowered and the bottom of the coke bucket 6 is placed at the top of the cooling tower. The provided packet receiver is supported by part 11. Up until this point,
The suspension rod of the damper 9 of the coke bucket 6 is lifted by the crane hook 5, so the damper (double-opening damper) 9 is fully opened via the suspension rod 7 and the damper opening/closing link 10. Further, when the hoisting drum 2 is lowered, the hanging rod 7, that is, the link connecting fitting 8 is lowered, and the damper 9 rotates around its support shaft 13 and opens, and the red-hot coke in the packet is charged into the cooling tower. Ru.

In a 28T coke packet, the amount of lowering from fully closed to fully open is 1400 am (Δh), and it takes about 6 seconds to discharge the entire amount of red-hot coke in the packet.

The method of the present invention reduces the lowering amount after the bottom of the coke bucket 6 is supported by the packet receiver 11 provided at the top of the cooling tower than the conventional lowering amount until fully opened.
After discharging the damper 9 for the conventional full discharge time,
Hoist the hoist drum and stop discharging. In this way, all of the red hot coke in the bucket is not discharged and the red hot coke remains in the coke bucket 6. This remaining red-hot coke is charged to other cooling towers.For example, in the above 28T coke packet, the amount of unwinding after the packet is supported by the receiving part 11Ah (ht-h2)=1. 000mm and the opening at this time will be half open), then discharge for 6 seconds and wind up to fully close. At this time, the remaining amount of red hot coke in the packet is approximately 14
It was T. Approximately 147 of this amount is charged to another cooling tower. In this way, fluctuations in the amount of coke held in the two cooling towers can be reduced.

The lowering amount Ah is determined by changing the setting of the limit switch built into the hoisting device, etc. When there are three cooling towers, the lowering amount Δh is changed and the damper opening degree is set to 1/3.
Simply open the damper for 6 seconds, then fully close the damper.

[Effects of the Invention] Since the method of the present invention is configured as described above, when there are a plurality of cooling towers, it is possible to reduce the dispersion in the level of red-hot coke held between each cooling tower, and to reduce the variation in the level of red-hot coke held in each cooling tower. Since fluctuations in the coke retention level can be reduced, fluctuations in the amount of steam generated between waste heat boilers and fluctuations in the amount of steam generated by each waste heat boiler can be reduced. Further, an effect can be obtained in that the time required for discharging coke from a cooling tower for repairing a coke dry fire extinguishing system can be shortened.

[Brief explanation of drawings]

FIG. 1 is a detailed explanatory diagram of the present invention, FIGS. 2A and 2B are explanatory diagrams of a conventional charging method, and FIG. 3 is a diagram showing the arrangement of a coke dry extinguishing system in a coke oven. DESCRIPTION OF SYMBOLS 1... Crane, 2... Hoisting drum, 4-... Hanging beam, 5... Hanging hook, 6... Cork baguette, 7... Hanging rod, 8... Opening/closing link connection fittings, 9...Damper 10...Damper opening/closing link, 11...Packet receiver part.

Claims (1)

[Claims] When charging red-hot coke from a coke bucket into the cooling tower of a single coke dry digester, the damper of the coke bucket is kept partially open and the coke is charged for a predetermined period of time, leaving some of the coke inside the coke bucket. A method for charging a coke dry extinguishing system into a cooling tower in divided manner, characterized by completely closing a damper and charging the remaining coke into another cooling tower.