JP5921939B2 - Molded coke manufacturing equipment and charging equipment - Google Patents

Description

  The present invention relates to a molding coke production facility for continuously carbonizing coal in a carbonization furnace, and more particularly to a charging device for charging coal into a carbonization furnace.

  Molded coke production equipment is to produce cast coke by continuously carbonizing coal in a carbonization furnace, and the process of lowering the coal coal as raw material is charged from the top of the carbonization furnace The carbonization is carried out by contact with the carbonization gas and heated directly. The charcoal charged from the upper part of the carbonization furnace needs to be charged as a complete prototype, and if it is crushed and cracked during the charging process, This causes segregation of distribution and uneven flow of dry distillation gas, and uniform heating is hindered. As a result, the quality and product yield of molded coke after dry distillation are deteriorated.

  Therefore, for example, Patent Document 1 discloses a furnace for the purpose of reducing crushing and cracking due to a drop impact when charging coal into the furnace, and improving segregation of the coal char particle size distribution and drift of dry distillation gas. An exhaust gas duct is provided at the top of the body, a charging chute is provided at the upper side of the furnace body, and a lower hopper and an upper hopper are provided above the charging chute so as to be kept airtight via a lower seal valve and an upper seal valve, respectively. A top structure of a molded coke carbonization furnace is disclosed.

  Moreover, in patent document 2, in the molding coke dry distillation furnace which inserts a charcoal in a furnace with the charging chute inserted in the furnace top part, the charcoal in a charging chute is always filled directly under a charging chute. There has been proposed a method of reducing the height difference of the charging surface by dividing the molding charcoal charged by each charging chute into two forks by arranging the saddle members with a certain gap to descend.

JP 54-43202 A JP 54-148003 A

  However, the former method has a drawback that a raw material stock line of peaks and valleys is formed in the furnace in accordance with the pitch of the charging chute, and the drift of dry distillation gas tends to occur as it goes to the upper part of the furnace. . In particular, when the top of the furnace is lengthened for scale-up of the carbonization furnace, the arrangement interval in the furnace length direction of a set of charging devices composed of an upper hopper, a lower hopper, an upper seal valve, a lower seal valve, and the like is long. Accordingly, the pitch between the peaks and valleys of the raw material becomes longer, and as shown in FIG. 6, the height difference H between the peaks and valleys formed by the angle of repose of the formed coal becomes larger, and gas drift is more likely to occur.

  Moreover, if the number of charging devices is increased so that the arrangement intervals are the same, there is a problem that the cost increases. Even in the latter method, although the drop impact when charging the coal into the carbonization furnace is reduced, the difference in height is reduced by dividing into two branches, so the degree of gas drift is reduced, but the gas still remains. It is not possible to prevent drifting. Further, in this method, since the gas generated at the top of the furnace contains tar generated in the dry distillation process of the coal, the tar is fixed to the charging chute disposed in the space through which the gas passes and the dredge member, As a result of the growth, the gas flow velocity and the descent rate of the coal coal are disturbed at the top of the furnace, which hinders normal operation. If there is a deviation in the gas flow or the descent rate of the coal, the heating rate of the raw coal will not be controlled properly, and coal coal will be fused or cracked during the dry distillation process, resulting in molding coke. The quality and product yield deteriorate.

  Therefore, in the present invention, even if the furnace length is increased for scale-up, the stock line of the charcoal charged into the dry distillation furnace is made uniform without greatly increasing the number of charging apparatuses. It is an object of the present invention to provide a molded coke manufacturing facility and a charging device for the same that can eliminate the uneven flow of dry distillation gas in the dry distillation furnace.

  The molding coke production facility of the present invention is a molding coke production facility for continuously carbonizing coal in a carbonization furnace, a charging chute for charging coal into the carbonization furnace from the upper side of the carbonization furnace, It is provided with a charging device that is provided on the chute and has a dispersion plate that disperses the charged coal into the dry distillation furnace.

  Further, the charging device of the molding coke production facility of the present invention includes a charging chute for charging the coal into the carbonization furnace from the upper side of the carbonization furnace, and a charging chute provided in the charging chute. And a dispersion plate to be dispersed and charged therein.

  According to these inventions, when the charcoal is charged into the dry distillation furnace by the charging chute, the charcoal is dispersed and charged in the dry distillation furnace by the dispersion plate in the charging chute. It is possible to make uniform the stock line of coal.

  Here, it is desirable that the dispersing plate is rocked so as to disperse the charged coal into the dry distillation furnace. As a result, since the charcoal charged into the carbonization furnace by the charging chute is continuously dispersed in the carbonization furnace by the oscillating dispersion plate, compared with the charging from the fixed position of the conventional method. The coal stock line in the carbonization furnace can be made more uniform, the placement pitch of the charging equipment in the furnace length direction can be made longer than in the conventional method, and the number of charging equipment can be reduced. it can.

  Further, the molding coke production facility of the present invention is formed by controlling a hopper that supplies coal, a stop valve that cuts out the coal supplied from the hopper, and opening / closing of the stop valve and a swinging opening of the dispersion plate. It is desirable to have a control device that uniformly disperses the charcoal in the carbonization furnace. Thereby, the control can be performed so that the charcoal is uniformly dispersed in the dry distillation furnace by the oscillating dispersion plate, so that the stock line of the charcoal in the dry distillation furnace can be surely made uniform.

  In addition, it is desirable that the charging devices are arranged in a staggered manner in the furnace length direction as viewed from above the dry distillation furnace. Thereby, when a plurality of charging devices are arranged in the furnace length direction when viewed from above the carbonization furnace, it is possible to arrange the plurality of charging devices without interfering with each other.

(1) A charging chute for charging coal into the carbonization furnace from the upper side of the carbonization furnace, and a dispersion plate provided in the charging chute for dispersing and charging the charcoal into the carbonization furnace. According to the charging apparatus having the above, it becomes possible to make the stock line of the coal in the furnace length direction in the carbonization furnace uniform, to eliminate the drift of the carbonization gas in the carbonization furnace, and to ensure an appropriate heating rate. In the dry distillation process, it is possible to prevent the fusion of the coals and the cracking of the coals to improve the quality of the molded coke and the product yield.

(2) As the dispersion plate swings, the charcoal is dispersed and charged in the dry distillation furnace so that the charcoal is continuously dispersed in the furnace length direction in the dry distillation furnace. Thus, it becomes possible to make the stock line of the coal coal in the carbonization furnace more uniform and eliminate the drift of the carbonization gas in the carbonization furnace.

(3) A hopper for supplying the coal, a stop valve for cutting the coal supplied from the hopper, and the length of the coal in the dry distillation furnace by controlling the opening and closing of the stop valve and the swinging opening of the dispersion plate And a control device that uniformly disperses the carbon in the direction, and controls the charcoal to be uniformly dispersed in the dry distillation furnace by means of the oscillating dispersion plate, thereby ensuring the stock line of the coal in the dry distillation furnace. It is possible to eliminate the uneven flow of the dry distillation gas in the dry distillation furnace.

(4) Since the charging devices are arranged in a staggered manner in the furnace length direction when viewed from above the dry distillation furnace, it is possible to arrange a plurality of charging devices without interfering with each other. By using the apparatus, it becomes possible to make the stock line of the forming coal in the dry distillation furnace uniform, and to eliminate the drift of the dry distillation gas in the dry distillation furnace.

(5) Due to the above effect, when the furnace length is increased for scale-up, the placement pitch of the charging apparatus in the furnace length direction can be increased compared to the conventional method, so the number of charging apparatuses is reduced. be able to.

It is a top view of the dry distillation furnace upper part of the shaping | molding coke manufacturing equipment in embodiment of this invention. It is AA sectional drawing of FIG. It is explanatory drawing which shows the state by which the shaping | molding charcoal in the dry distillation furnace of FIG. 1 is disperse | distributed and charged. It is a figure which shows another embodiment of a dispersion plate. It is a figure which shows the operation time chart of the stop valve and dispersion | distribution board of the charging device of FIG. These are explanatory drawings of the stock line shape and gas flow rate distribution of a carbonization furnace by a conventional method.

  FIG. 1 is a plan view of an upper part of a carbonization furnace of a molding coke production facility according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. It is explanatory drawing which shows the state inserted.

  As shown in FIG. 1 and FIG. 2, the molding coke manufacturing facility in the embodiment of the present invention continuously carbonizes the coal char C in the carbonization furnace 1, and the raw material is formed on the upper side of the carbonization furnace 1. A plurality of charging devices 2 for charging a certain coal char C into the dry distillation furnace 1 are provided. As shown in FIG. 1, the charging devices 2 are arranged in a staggered manner in the furnace length direction (left and right longitudinal direction in the figure) as viewed from above the dry distillation furnace 1.

  As shown in FIG. 2, each charging device 2 includes a hopper 3 for supplying the coal char C, a charging chute 4 for charging the coal char C supplied from the hopper 3 from the upper side of the dry distillation furnace 1, It has. The charcoal C is appropriately put into the hopper 3 by an electromagnetic feeder (not shown). The hopper 3 includes an upper hopper 30 and a lower hopper 31. An upper gate valve 32 and an upper seal valve 33 are provided below the upper hopper 30. A lower gate valve 34 and a lower seal valve 35 are provided below the lower hopper 31.

  In the middle portion of the charging chute 4, a stop valve 5 is provided for temporarily holding the charcoal C on the upper portion of the charging chute 4 for the purpose of mitigating the drop impact when cutting out the charcoal C supplied from the hopper 3. ing. The stop valve 5 is opened and closed by a stop valve driving device 6 (see FIG. 3), and the coal char C once held on the charging device 2 is cut out into the dry distillation furnace 1. In addition, a dispersion plate 7 for dispersing the formed coal C in the dry distillation furnace 1 is provided in the vicinity of the inlet (dry distillation furnace inlet 1 a) to the dry distillation furnace 1 below the charging chute 4. As shown in FIG. 3, the dispersion plate 7 is a plate that can swing in the furnace length direction of the dry distillation furnace 1. The dispersion plate 7 is driven by a dispersion plate driving device 8.

  Although not shown, the upper hopper 30, the lower hopper 31, the upper gate valve 32, and the upper seal valve 33 are also provided with driving devices, respectively, together with the stop valve driving device 6 and the dispersion plate driving device 8, not shown. It is controlled by the control device.

  Next, operation | movement of the charging device 2 of the said structure is demonstrated with reference to FIG. FIG. 5 is a diagram showing an operation time chart of the stop valve 5 and the dispersion plate 7 of the charging device 2 of FIG.

  In order to prevent outflow of high-temperature dry distillation gas in the dry distillation furnace 1 when the raw coal C is charged into the dry distillation furnace 1 by each charging device 2, the dry coal furnace is used to prevent the hot dry distillation gas in the dry distillation furnace 1 from flowing out. 1 is loaded.

(1) While the upper gate valve 32 and the upper seal valve 33 provided at the lower part of the upper hopper 30 are closed, the charcoal C corresponding to one charging amount is charged into the upper hopper 30 from the electromagnetic feeder.

(2) When charging the coal into the furnace with the lower gate valve 34 and the lower seal valve 35 provided at the lower part of the lower hopper 31 closed, the dry distillation gas in the furnace flows out of the system. In order to prevent this, the upper seal valve 33 is opened while the purge gas (N ₂ gas in this embodiment) is supplied into the upper hopper 30 from the purge gas hole 36 provided in the lower hopper 31, and then the upper gate is opened. The valve 32 is opened and the coal char C is cut out to the lower hopper 31.

(3) When the cutting of the coal char C to the lower hopper 31 is completed, the upper gate valve 32 and the upper seal valve 33 are closed in this order, and after these two valves are completely closed, a purge gas valve (not shown) is turned on. Then, the supply of the purge gas from the purge gas hole 36 is stopped. When the amount of in-furnace carbonization gas flowing into the upper hopper 30 is large, the N ₂ purge is continued until the cutting of the coal char C into the lower hopper 31 is completed.

(4) Next, the lower seal valve 35 and the lower gate valve 34 are sequentially opened, and the coal char C in the lower hopper 31 is cut out on the charging chute 4. At this time, the stop valve 5 provided in the intermediate portion of the charging chute 4 is in a closed state, and the coal char C remains in the upper part of the charging chute 4. The operations (1) to (4) are sequentially performed by a timer in accordance with the set number of times of charging (charging amount). The charging amount per time is always constant, and the adjustment of the total charging amount is determined by the number of times of charging.

(5) From the state where the coal char C once stayed on the upstream side of the stop valve 5 above the charging chute 4, the stop valve 5 is opened to a predetermined opening (α) as shown in FIG. While maintaining the degree (α), the charcoal C is charged into the dry distillation furnace 1. Then, during the time (T seconds) when the coal char C is charged into the carbonization furnace 1, the opening degree of the stop valve 5 is held at a predetermined angle (α), and the coal char C into the carbonization furnace 1 is kept. Adjustment is made so that the input amount is uniform (see FIG. 5).

(6) Further, at the same time as the stop valve 5 is opened, the dispersion plate 7 provided at the dry distillation furnace inlet 1a at the lower portion of the charging chute 4 is synchronized with the opening and closing of the stop valve 5, as shown in FIG. It is swung by the opening degree (β) so as to reach the position (b) after a time T seconds from the initial position (a) until the charging is completed (see FIG. 5). As a result, the cast charcoal C is uniformly charged on the charging chute 4 along the dispersion plate 7 in the furnace length direction in the dry distillation furnace 1. At this time, the opening / closing speed of the stop valve 5, the opening degree (α) of the stop valve 5, the charging time T, the swinging speed and the swinging opening degree (β) of the dispersion plate 7 are determined as a single charging amount. Therefore, it is possible to make adjustments and make adjustments in advance during a trial run.

(7) When the charging to the carbonization furnace 1 is completed, the stop valve 5 is closed, but the dispersion plate 7 keeps the position (b) as it is and from the position (b) at the next charging. Swing to position (a).

  As described above, according to the charging device 2 in the present embodiment, when the coal char C is charged into the dry distillation furnace 1 by the charging chute 4, the charcoal C is generated by the dispersion plate 7 in the charging chute 4. Since it is dispersed in the furnace length direction in the dry distillation furnace 1, as shown in FIG. 3, the height difference between the peaks and valleys of the coal coal C stock line in the dry distillation furnace 1 is reduced, and the stock line is made uniform. Can do. As a result, it becomes possible to eliminate the drift of the dry distillation gas in the dry distillation furnace 1 and to ensure an appropriate rate of temperature rise, so that the coal coal C can be prevented from being fused or cracked in the dry coal process. In addition, the quality of molded coke and product yield can be improved.

  Moreover, in the charging apparatus 2 in this embodiment, since the dispersion | distribution board 7 rock | fluctuates, in order to disperse | distribute the shaping | molding coal C in the dry distillation furnace 1, it is charged in the dry distillation furnace 1 by the charging chute 4. The coal coal C that is introduced is continuously dispersed in the furnace length direction of the dry distillation furnace 1. Thereby, it is possible to uniformly charge the coal char C in the furnace length direction of the carbonization furnace 1 and make the stock line of the coal char C in the carbonization furnace 1 more uniform. In particular, in this charging device 2, the coking coal C is uniformly dispersed in the dry distillation furnace 1 by controlling the opening and closing of the stop valve 5 and the swinging of the dispersion plate 7 in synchronization, so that the stock line of the forming coal C is obtained. Can be made uniform uniformly.

  In addition, about the dispersion | distribution board 7, as shown in FIG. 4, the casting charcoal C charged in the dry distillation furnace 1 from the charging chute 4 disperse | distributes in the dry distillation furnace 1, and a stock line becomes uniform, It is also possible to use fixed dispersion plates 9a, 9b, and 9c in which the shape, angle, number and the like are set in advance. As a result, like the oscillating dispersion plate 7, the coal char C charged into the dry distillation furnace 1 by the charging chute 4 is dispersed in the furnace length direction of the carbonization furnace 1, and the coal char in the carbonization furnace 1 is dispersed. It becomes possible to make the stock line of C more uniform.

  In addition, since the charging devices 2 in the present embodiment are arranged in a staggered manner in the furnace length direction as viewed from above the dry distillation furnace 1, a plurality of charging devices 2 are provided in the furnace length direction as viewed from above the dry distillation furnace 1. When arranged, it is possible to arrange a plurality of charging devices 2 without interfering with each other. Thereby, even if the furnace length becomes longer due to the scale-up of the carbonization furnace 1, the stock line of the forming coal C in the carbonization furnace 1 is made uniform without increasing the number of the charging devices 2, and the carbonization furnace The drift of the dry distillation gas in 1 can be eliminated.

  INDUSTRIAL APPLICABILITY The present invention is useful as a molded coke production facility and a charging device for producing molded coke by continuously carbonizing coal in a carbonization furnace.

C Coking charcoal 1 Carbonization furnace 2 Charger 3 Hopper 30 Upper hopper 31 Lower hopper 32 Upper gate valve 33 Upper seal valve 34 Lower gate valve 35 Lower seal valve 4 Charging chute 5 Stop valve 6 Stop valve drive 7 Dispersing plate 8 Dispersion plate drive device 9a-9c Dispersion plate

Claims (5)

In a molding coke production facility that continuously carbonizes coal in a carbonization furnace,
A charging chute for charging the coal into the carbonization furnace from the upper side of the carbonization furnace;
It consists of a plate extending in the charging direction of the charging chute, provided at the center in the furnace length direction of the dry distillation furnace in the charging chute so as to be swingable in the furnace length direction of the dry distillation furnace, Molded coke manufacturing facility provided with a charging device having a dispersion plate for dispersing and charging in a carbonization furnace.   2. The molding coke manufacturing facility according to claim 1, wherein the dispersion plate is rocked to disperse the charging coal into the dry distillation furnace. A hopper for supplying the charcoal;
A stop valve for cutting out the formed charcoal supplied from the hopper;
The molding coke manufacturing facility according to claim 2, further comprising: a control device that uniformly disperses the coal char in the dry distillation furnace by controlling opening / closing of the stop valve and a swinging opening degree of the dispersion plate.   4. The molded coke manufacturing facility according to claim 1, wherein the charging devices are arranged in a staggered manner in the furnace length direction as viewed from above the dry distillation furnace. It is a charging device of a molding coke production facility that continuously carbonizes coal in a carbonization furnace,
A charging chute for charging the coal into the carbonization furnace from the upper side of the carbonization furnace;
It consists of a plate extending in the charging direction of the charging chute, provided at the center in the furnace length direction of the dry distillation furnace in the charging chute so as to be swingable in the furnace length direction of the dry distillation furnace, A charging device having a dispersion plate for dispersing and charging in a dry distillation furnace.

Images