JPWO2010044138A1 - Coke dry fire extinguishing equipment and coke dry fire extinguishing method - Google Patents

Abstract

The red hot coke is charged from the upper part of the chamber (3) whose lower part is formed in a cone shape, and the hot red coke descending in the chamber is cooled by blowing cooling gas from the cooling gas supply means installed in the lower part of the chamber. In the coke dry fire extinguishing equipment (1) for discharging coke from a coke discharge port (12) provided at the lower part of the chamber, a main head (41) with a diameter of a blast head (4) installed at the lower part of the chamber as D ), A small head (45) having a diameter d smaller than that of the main head is arranged in at least one stage, so that the descent of coke in the chamber is made uniform and the coke cooling efficiency is improved.

Description

  The present invention relates to a coke dry fire extinguishing equipment and a coke dry fire extinguishing method for cooling red hot coke.

  Coke Dry Quenching equipment (CDQ) installed in steelworks, etc. is a facility that extinguishes hot coke that has been carbonized in a coke oven with a cooling gas such as inert gas, and gradually cools high-temperature coke. This improves the coke quality, thereby stabilizing the operation of the steelmaking blast furnace. Coke dry fire extinguishing equipment can prevent the scattering of coke dust by circulating the cooling gas in the system, and also recover sensible heat of coke with a heat recovery device such as a waste heat boiler for energy saving. Have

  As shown in FIG. 6, a conventional coke dry fire extinguishing system 1 has a chamber in which a pre-chamber 2 in which a coke inlet 10 is formed at the top and a cooling chamber 3 in which a coke discharging device 11 is provided at the bottom are connected vertically. It is the structure which was made.

  The cooling chamber 3 is formed in a cone shape (for example, an inverted cone shape or an inverted truncated cone shape) at the lower portion, and is a cooling gas supply means for blowing out a cooling gas such as an inert gas at the center of the cone portion. In addition, a blast head 4 is provided for making the descending flow of coke uniform. The blast head 4 includes a substantially conical cap member 41 and is configured to blow cooling gas in a circumferential direction from an outlet (not shown) formed in the cap member 41. Further, the blast head 4 is supported by a support member 42 having a gas flow path therein, and the gas flow path inside the support member 42 communicates with the gas supply chamber 43. In addition, a part of the cooling gas supplied to the gas supply chamber 43 is also introduced into the cooling chamber 3 from a cooling gas supply means (for example, the supply port 44) disposed on the circumference of the inclined portion corresponding to the lower portion of the cooling chamber 3. It is the structure supplied to.

  Moreover, the small flue 5 divided | segmented into plurality which discharges the cooling gas blown in in the cooling chamber 3 is formed so that the trunk | drum of the pre chamber 2 may be enclosed in the circumferential direction.

  In the above configuration, high-temperature red hot coke is charged into the chamber via the coke charging inlet 10, and coke is continuously discharged from the bottom of the chamber by the coke discharging device 11. At this time, the coke 6 descending in the chamber is cooled by exchanging heat with the cooling gas from the lower part of the chamber including the blast head 4. On the other hand, the cooling gas having a high temperature due to heat exchange is discharged from the chamber through the small flue 5. And although illustration is abbreviate | omitted, after the discharged | emitted gas passes a dust remover, it is supplied to heat recovery apparatuses, such as a waste gas boiler, is heat-recovered, and is again supplied in a chamber as cooling gas.

  Here, in the above-described coke dry fire extinguishing equipment 1, the coke 6 in the chamber does not all fall down directly below, but takes course in various directions due to the influence of the chamber shape, wall surface, and coke physical properties. Gradually descend in the chamber. This uneven descent causes variations in the heat exchange of the coke 6 and has a long-standing problem that the cooling efficiency of the entire chamber is low. Furthermore, since the cooling efficiency of the whole chamber is low, there is a problem that a large chamber is required to cool the coke 6 to a predetermined temperature.

  As one of the methods for solving the above problem, a method by improving the blast head 4 is known (for example, see Patent Documents 1 and 2). Patent Document 1 describes a method of controlling variations in heat exchange by changing the width of the coke passage by driving the skirt at the tip of the blast head to extend and contract. Japanese Patent Application Laid-Open No. H10-228561 describes a method for moving up and down the entire head portion of the blast head.

  However, since a large amount of coke 6 filling pressure (ie, coke mass, pressure due to lowering, etc.) is applied to the blast head 4 provided in the lower part of the chamber, the blast head as in Patent Documents 1 and 2 is applied. In order to raise and lower or extend and contract the tip, an expensive high-power drive device is required. In addition, since the temperature of the chamber is high and the environment contains a large amount of dust, there is a concern that an equipment trouble may occur if the blast head is operated as in Patent Documents 1 and 2.

Japanese Patent Laid-Open No. 1-110592 JP-A 63-10691

  The present invention has been made based on such circumstances, and the object thereof is to provide a blast head that can contribute to uniform coke descent in the chamber and improve coke cooling efficiency. The object is to provide a coke dry fire extinguishing facility and a coke dry fire extinguishing method.

  Still another object of the present invention is to provide a coke dry fire extinguishing equipment and a coke dry fire extinguishing method equipped with a blast head capable of reducing the chamber size by improving the coke cooling efficiency.

  The coke dry fire extinguishing equipment of the present invention is charged with red hot coke from the upper part of the chamber whose lower part is formed in a cone shape, and blows cooling gas from the cooling gas supply means installed in the lower part of the chamber to descend the chamber. In a coke dry fire extinguishing system that cools red hot coke to be discharged and discharges coke from a coke discharge port provided in the lower part of the chamber, the diameter of the blast head installed in the lower part of the chamber is below the main head with D as the main head. It is characterized in that at least one or more small heads having a diameter d smaller than the head are arranged.

  The small head is preferably arranged so that an angle (θ1) between a straight line (T1) connecting the outer peripheral end and the center of the coke discharge port and a horizontal axis is within a range of 60 degrees to 80 degrees. Further, each of the angles (θ1, θ2) formed between the straight lines (T1, T2) connecting the outer peripheral ends of the small head and the main head and the center of the coke discharge port and the horizontal axis is within a range of 60 degrees to 80 degrees. It is preferable to arrange so that. At this time, the angles θ1 and θ2 formed may be the same angle or may be different from each other.

  Furthermore, when θ4 is the smaller of the angles (θ1, θ2) formed by the straight lines (T1, T2) connecting the outer peripheral ends of the small head and the main head and the center of the coke discharge port and the horizontal axis (θ1, θ2) The inclination angle θ3 of the cone portion is preferably in the range of θ4 to θ4-25 degrees.

  It is preferable that the diameter Dh of the coke discharge port is ½ or more (Dh ≧ 0.5d) of the diameter d of the small head.

  The small head is a position where the distance H is 1 to 5 times the diameter Dh of the coke discharge port, where H is the distance from the lower surface of the angle of repose of the coke formed below the small head to the coke discharge port. It is preferable to arrange in.

  Furthermore, it is preferable to provide a gas flow path for cooling gas in the main head or in the main head and the small head, and to provide cooling gas supply means for blowing cooling gas into the chamber.

  Further, the coke dry fire extinguishing method of the present invention is charged with red hot coke from the upper part of the chamber whose lower part is formed in a cone shape, and the cooling gas is blown from the cooling gas supply means installed in the lower part of the chamber. In the coke dry fire extinguishing method, in which red hot coke descending is cooled and coke is discharged from a coke discharge port provided in the lower part of the chamber, the diameter of the blast head installed in the lower part of the chamber is below the main head with D as the diameter. A small head having a diameter d smaller than the main head is arranged in at least one stage to rectify the flow of coke descending in the chamber.

  Furthermore, it is preferable to cool the red hot coke by blowing a cooling gas from the main head or the main head and the small head.

  According to the present invention, by disposing a small head having a diameter d smaller than the main head below the main head having a diameter of a blast head installed at the lower part in the chamber as D, variation in coke drop in the chamber is achieved. Which improves the coke descent. As a result, heat exchange between the coke and the cooling gas in the chamber is made uniform, thereby improving the coke cooling efficiency.

  Furthermore, according to the present invention, since the coke descent is made uniform and the coke cooling efficiency is improved, the chamber can be made compact. In particular, if cooling gas is blown from a small head, the area below the blast head (main head) that was not used as a cooling zone in the conventional structure can also be used as a cooling zone, further improving cooling efficiency. In addition, the chamber can be made compact.

It is the schematic of the coke dry-type fire extinguishing equipment by embodiment of this invention. It is a cross-sectional view of the coke dry fire extinguishing equipment. It is a figure which shows the blast head of the said coke dry-type fire extinguishing equipment. It is a figure for demonstrating the effect | action of the said blast head. It is a figure for demonstrating the effect by the said blast head. It is the schematic of the conventional coke dry-type fire extinguishing equipment.

Explanation of symbols

1 Coke dry fire extinguishing equipment 2 Pre-chamber 3 Cooling chamber 4 Blast head 41 Main bed 42 Support member 45 Small head

  A preferred embodiment of a coke dry fire extinguishing equipment and a coke dry fire extinguishing method according to the present invention will be described in detail with reference to the accompanying drawings. However, the technical scope of the present invention is not limited and interpreted by the embodiments described below.

  First, as shown in FIGS. 1 and 2, the chamber of the coke dry fire extinguishing equipment 1 of the present embodiment includes a pre-chamber 2 having a coke charging inlet 10 at the top and a cooling chamber 3 having a coke discharge port 12 at the bottom. It is the structure connected up and down. These chambers can be formed of a refractory material such as steel or brick. The high-temperature coke 6 generated in the coke oven is charged into the pre-chamber 2 from the coke charging inlet 10 by a coke transfer device such as a bucket (not shown). The coke 6 charged into the pre-chamber 2 gradually descends and enters the cooling chamber 3. Further, the coke 6 that has entered the cooling chamber 3 is cooled by the cooling gas 7 while gradually descending, and is continuously discharged by the coke discharge device 11 provided at the coke discharge port 12. In general, the coke discharging device 11 continuously discharges the coke 6 and replenishes the coke 6 in a batch manner. However, it is not limited to this.

  The lower portion of the cooling chamber 3 is formed in a cone shape (for example, an inverted cone shape or an inverted truncated cone shape), and a cooling gas such as an inert gas is blown out at the center (for example, on the central axis) of the cone portion. In addition to the cooling gas supply means, a blast head 4 for making the descending flow of the coke 6 uniform is provided. As shown in FIG. 2, the blast head 4 is supported by a substantially cross-shaped support member 42 that is installed through the side wall of the cone portion. Further, a gas supply chamber 43 is formed so as to surround the outer periphery of the cone portion, and an end portion of the support member 42 penetrating the side wall of the cone portion extends into the gas supply chamber 43. A gas flow path (not shown) for cooling gas is formed inside the support member 42, and the cooling gas supplied to the gas supply chamber 43 through this gas flow path is guided to the blast head 4 to be blasted. A cooling gas is blown into the chamber through the head 4. In addition, a part of the cooling gas supplied to the gas supply chamber 43 is also introduced into the cooling chamber 3 from a cooling gas supply means (for example, the supply port 44) disposed on the circumference of the inclined portion corresponding to the lower portion of the cooling chamber 3. It is the structure supplied to. However, the present invention is not limited to this configuration, and the cooling gas may be supplied from either the blast head 4 or the supply port 41. Furthermore, the substantially cross-shaped support member 42 shown in FIG. 2 is merely an example, and it is only necessary to be able to support the blast head 4 and is not limited to this shape.

  The blast head 4 of the present embodiment has a two-stage head structure having a main head 41 arranged at the upper stage and a small head 45 arranged at the lower stage. The main head 41 and the small head 45 include a substantially conical shade member, and are configured to blow cooling gas, for example, in a circumferential direction from a blowout port (not shown) formed in the shade member. The small head 45 has a diameter (aperture) d smaller than the diameter (aperture) D of the main head 41. If this condition is satisfied, the shape of each head is not limited to that shown in FIG. Preferably, as shown in FIG. 3A, the small head 45 and the main head 41 are each a straight line connecting the outer peripheral end of each head (in this example, the outer peripheral end of the cap member) and the center of the coke discharge port 12 ( The angles (θ1, θ2) formed by T1 and T2) and the horizontal axis are in the range of 60 degrees to 80 degrees, particularly preferably 70 degrees (condition (I)). The “coke discharge port” in this condition (I) is defined as meaning the position where the cone portion finishes tilting (that is, the lower end surface of the cone portion) as shown in FIG. 3A as an example. Is done. It is preferable that both the angles (θ1, θ2) are in the range of 60 ° to 80 °. However, if at least the angle θ1 formed by the small head 45 is within the above range, the angle θ2 formed by the main head 41. Can be outside the above range. FIG. 3A shows an arrangement in which the angles θ1 and θ2 are different as an example. However, the angles θ1 and θ2 may be arranged to be the same angle.

  More preferably, as shown in FIG. 3A, the angle (θ1, T2) formed by the straight line (T1, T2) connecting the outer peripheral ends of the small head 45 and the main head 41 and the center of the coke discharge port 12 and the horizontal axis. When the smaller one of [theta] 2) is set to [theta] 4, the cone angle [theta] 3 is set within the range of [theta] 4 to [theta] 4-25 degrees (condition (II)).

  More preferably, the diameter Dh of the coke outlet 12 shown in FIG. 3A is set to be equal to or larger than ½ of the diameter d of the small head 45 (Dh ≧ 0.5d) (condition (III)).

  Further, preferably, as shown in FIG. 3B, the small head 45 has a distance from the lower surface (h1) of the space formed by the angle of repose of the coke 6 formed below to the coke discharge port 12. When it is set to H, it arrange | positions in the position where the distance H becomes 1-5 times the diameter Dh of the coke discharge port 12, More preferably, it is 1-3 times (condition (IV)). The “coke discharge port” in this condition is also defined in the same manner as the condition (I) described above. In addition, about the height position of the lower surface (h1), since the angle of repose of coke is generally 34 to 35 degrees, it can be calculated by calculation or calculation using this value. However, the present invention is not limited to this, and the angle of repose may be obtained by a known method such as measuring the angle of repose using a coke sample.

  In the present embodiment, it is preferable to satisfy one of the above-mentioned conditions (I) and (IV). However, in order to make the coke fall uniform more reliably, the conditions (I) and (IV) It is preferable to satisfy both conditions. Furthermore, it is preferable to combine conditions (II) and / or (III) with conditions (I).

  Returning to FIG. 1, the small flue 5 divided into a plurality of parts for discharging the cooling gas is formed so as to surround the cylindrical straight body portion of the pre-chamber 2 in the circumferential direction. The small flue 5 is connected to a flue 51 and is connected to a heat recovery facility 53 such as a waste heat boiler via a dust catcher 52 as a first dust remover. The gas cooled by the heat recovery equipment 53 passes through the second dust remover 54, and then is blown to the preheater 56 by a blowing means 55 such as a blower, and is supplied again to the cooling chamber 3 as a cooling gas. Since these configurations are known, detailed description thereof will be omitted.

  In the above-described coke dry fire extinguishing equipment 1, the coke 6 charged into the pre-chamber 2 from the coke inlet 10 is gradually lowered along with continuous discharge from the bottom of the cooling chamber 3 to enter the cooling chamber 3. Enter. And it cools by exchanging heat with the cooling gas 7 blown from the main head 41, the small head 45, and the supply port 44 in the cooling chamber 3, and is discharged | emitted by the coke discharging apparatus 11. FIG. Note that the air volume ratio per unit time of the main head 41 and the small head 45 is preferably 8: 2 as an example. Here, as explained in the background art section, the coke 6 descending in the chamber usually descends gradually while taking a course in various directions due to the influence of the shape and wall surface of the chamber and the difference in coke physical properties. There is a tendency. The present inventors consider that this is the main factor that causes variations in descent, and as a result of intensive studies, a small head 45 smaller in size than the main head 41 is newly added. As a result, the inventors have found that the variation in the descent can be remarkably improved by disposing it below the lower limit of the position, and the present invention has been completed. In particular, a test was actually conducted to confirm that the effect of the relationship between the main head 41 and the small head 45 is large when the above-mentioned conditions (I) and / or (IV) are satisfied, and is greatly related to the coke properties. Go and check.

  The present inventors consider the reason why the variation in descent can be improved as follows. That is, as schematically shown in FIG. 4, in the cone portion of the cooling chamber 3, the coke descending the central portion of the chamber changes the flow direction outward in the circumferential direction by the main head 41, Promote coke flow. A flow toward the center is formed below the main head 41 by the angle of repose. Next, the small head 45 changes the direction of the flow outward in the circumferential direction to further promote the flow of coke on the wall side, forms a flow toward the center by the angle of repose below the small head 45, and is discharged from the coke discharge port 12. The By rectifying into such a flow state in the cone portion, the coke in the central portion of the chamber is prevented from selectively descending toward the coke outlet 12 after passing through the main head 41, and the coke on the wall side As a result, the descent in the cooling chamber 3 is improved.

  Furthermore, if the above condition (I) is satisfied, the outer side in the circumferential direction formed by the main head 41 and the small head 45 is more effectively applied to the region where the fluidity due to the internal friction angle of the coke is low. As a result, it is possible to improve the descent variation more reliably. That is, paying attention to the fact that the internal friction angle of coke is around 75 degrees, by setting the outer peripheral ends of the main head 41 and the small head 45 to 60 degrees to 80 degrees, the flowability due to the internal friction angle is low. The action of the flow toward the outer side in the circumferential direction is made more effective. The action / effect by the condition (I) becomes more effective by further combining the conditions (II) and / or (III).

  Furthermore, the above-mentioned condition (IV) is to optimize the position of the small head 45 in the height direction, and if this condition (IV) is satisfied, the variation in descent can be improved more reliably. It becomes possible. That is, as schematically shown in FIG. 5, the condition of Dh ≦ distance H ≦ 5Dh is satisfied as compared with the case where the distance H is smaller than the diameter Dh and the case where the distance H is larger than five times the diameter Dh. The variation of the descent is small. When the distance H is larger than 5 times the diameter Dh (FIG. 5B), the distance from the small head 45 to the coke discharge port 12 is too long, and the coke after passing through the small head 45 is selectively centered. I guess that it descends through. On the other hand, when the distance H is smaller than the diameter Dh (FIG. 5A), the distance from the small head 45 to the coke discharge port 12 is too short. It is presumed that the flow toward the center is discharged before the repose angle is formed. In addition, in the case of FIG. 5A, it is considered that the space through which the coke between the small head 45 and the chamber wall surface is narrowed is also a cause.

  As described above, according to the present embodiment, a small head 45 having a size smaller than that of the main head 41 is newly added, and the two-stage head structure in which the small head 45 is disposed below the main head 41 is achieved. The variation of the coke drop in the cone part of the chamber is improved, so that the coke drop in the entire chamber is made uniform. When the descent of the coke in the chamber is made uniform, the heat exchange between the coke and the cooling gas in the chamber is made uniform, and as a result, the coke cooling efficiency can be increased. In particular, if the conditions (I) to (IV) are satisfied, the effect can be enhanced.

  Furthermore, according to the present embodiment, since the cooling efficiency of coke is improved, the chamber can be made compact. In particular, by blowing cooling gas from the small head 45, the lower region of the main head 41, which has not been used as a cooling zone in the conventional structure, can also be used as a cooling zone, further improving cooling efficiency and compacting the chamber. Can be achieved. However, the cooling gas may be blown from only the main head 41 without blowing the cooling gas from the small head 45.

  In the present invention, the number of small heads 45 disposed below the main head 41 is not necessarily limited to one, and a multi-stage head structure having three or more stages may be employed. In this case, it is preferable to reduce the diameter (d) of the head as it goes down.

  Although one embodiment and example of the present invention have been described above, it will be apparent to those skilled in the art that many modifications and variations can be made without departing from the spirit and scope of the present invention. It is included in the technical scope of the present invention.

[0003]
DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention [0011]
The present invention has been made based on such circumstances, and the object thereof is to provide a blast head that can contribute to uniform coke descent in the chamber and improve coke cooling efficiency. The object is to provide a coke dry fire extinguishing facility and a coke dry fire extinguishing method.
[0012]
Still another object of the present invention is to provide a coke dry fire extinguishing equipment and a coke dry fire extinguishing method equipped with a blast head capable of reducing the chamber size by improving the coke cooling efficiency.
Means for Solving the Problems [0013]
The coke dry-type disappearance equipment of the present invention is charged with red hot coke from the upper part of the chamber whose lower part is formed in a cone shape, and the cooling gas is blown from the cooling gas supply means installed in the lower part of the chamber to descend the chamber. In the coke dry fire extinguishing equipment that cools red hot coke and discharges coke from a coke discharge port provided in the lower part of the chamber, the diameter of the blast head is set to D on the support member that penetrates the side wall of the cone part at the lower part of the chamber. The main head is placed, a support member extending in the vertical direction from the support member is disposed below the main head, and at least one stage of a small head having a diameter d smaller than the main head is suspended on the support member extending in the vertical direction, The small head is fixedly arranged below the main head.
[0014]
The small head is preferably arranged so that an angle (θ1) between a straight line (T1) connecting the outer peripheral end and the center of the coke discharge port and a horizontal axis is within a range of 60 degrees to 80 degrees. Further, each of the angles (θ1, θ2) formed between the straight lines (T1, T2) connecting the outer peripheral ends of the small head and the main head and the center of the coke discharge port and the horizontal axis is within a range of 60 degrees to 80 degrees. It is preferable to arrange so that. At this time, the angles θ1 and θ2 formed may be the same angle or may be different from each other.
[0015]
Furthermore, when θ4 is the smaller of the angles (θ1, θ2) formed by the straight lines (T1, T2) connecting the outer peripheral ends of the small head and the main head and the center of the coke discharge port and the horizontal axis (θ1, θ2) The inclination angle θ3 of the cone portion is preferably in the range of θ4 to θ4-25 degrees.
[0016]
The diameter Dh of the coke discharge port is ½ or more of the diameter d of the small head (Dh ≧ 0.5d).

[0004]
) Is preferred.
[0017]
The small head is a position where the distance H is 1 to 5 times the diameter Dh of the coke discharge port, where H is the distance from the lower surface of the angle of repose of the coke formed below the small head to the coke discharge port. It is preferable to arrange in.
[0018]
Furthermore, it is preferable to provide a gas flow path for cooling gas in the main head or in the main head and the small head, and to provide cooling gas supply means for blowing cooling gas into the chamber.
[0019]
Further, the coke dry fire extinguishing method of the present invention is charged with red hot coke from the upper part of the chamber whose lower part is formed in a cone shape, and the cooling gas is blown from the cooling gas supply means installed in the lower part of the chamber. In the coke dry fire extinguishing method in which the red hot coke descending is cooled and the coke is discharged from the coke discharge port provided at the lower part of the chamber, the diameter of the blast head is set to D on the support member that penetrates the side wall of the cone part at the lower part of the chamber. And a supporting member extending in the longitudinal direction from the supporting member is disposed below the main head, and at least one stage of a small head having a diameter d smaller than the main head is suspended from the supporting member extending in the longitudinal direction. The small head is fixed below the main head to rectify the flow of coke descending in the chamber. The features.
[0020]
Furthermore, it is preferable to cool the red coke by blowing a cooling gas from the main head or the main head and the small head through the support member.
Effects of the Invention [0021]
According to the present invention, by disposing a small head having a diameter d smaller than the main head below the main head having a diameter of a blast head installed at the lower part in the chamber as D, variation in coke drop in the chamber is achieved. Which improves the coke descent. As a result, heat exchange between the coke and the cooling gas in the chamber is made uniform, thereby improving the coke cooling efficiency.
[0022]
Furthermore, according to the present invention, since the coke descent is made uniform and the coke cooling efficiency is improved, the chamber can be made compact. In particular, if cooling gas is blown from a small head, the area below the blast head (main head) that was not used as a cooling zone in the conventional structure can also be used as a cooling zone, further improving cooling efficiency. In addition, the chamber can be made compact.
BRIEF DESCRIPTION OF THE DRAWINGS [0023]
FIG. 1 is a schematic view of a coke dry fire extinguishing facility according to an embodiment of the present invention.

The coke dry fire extinguishing equipment of the present invention is charged with red hot coke from the upper part of the chamber whose lower part is formed in a cone shape, and blows cooling gas from the cooling gas supply means installed in the lower part of the chamber to descend the chamber. the red-hot coke is cooled, the coke dry quenching facility for discharging the coke from the coke discharge port formed in a lower portion of the chamber, the diameter of the probe last head support member extending through the side wall of the cone portion of the chamber over lower portion A main head of D is placed, and at least one small head having a diameter d smaller than the main head is suspended below the main head.

Further, the coke dry fire extinguishing method of the present invention is charged with red hot coke from the upper part of the chamber whose lower part is formed in a cone shape, and the cooling gas is blown from the cooling gas supply means installed in the lower part of the chamber. cooling the red-hot coke to drop the in coke dry quenching method of discharging the coke from the coke discharge port formed in a lower portion of the chamber, of the probe last head support member extending through the side wall of the cone portion of the chamber over lower portion A main head having a diameter D is mounted, and at least one small head having a diameter d smaller than the main head is suspended below the main head to rectify the flow of coke descending in the chamber. To do.

Furthermore, it is preferable to cool the red coke by blowing a cooling gas from the main head or the main head and the small head through the support member .

Claims (9)

The red hot coke is charged from the upper part of the chamber whose lower part is formed in a cone shape, and the red hot coke descending in the chamber is cooled by blowing the cooling gas from the cooling gas supply means installed in the lower part of the chamber. In the coke dry fire extinguishing equipment that discharges coke from the coke outlet provided at the bottom of
Coke dry fire extinguishing equipment, wherein at least one small head having a diameter d smaller than the main head is disposed below the main head having a diameter of a blast head installed in the lower part of the chamber as D.   The small head is arranged so that an angle (θ1) between a straight line (T1) connecting the outer peripheral end and the center of the coke discharge port and a horizontal axis is in a range of 60 degrees to 80 degrees. The coke dry fire extinguishing equipment according to claim 1.   In the small head and the main head, the angles (θ1, θ2) formed by the straight lines (T1, T2) connecting the respective outer peripheral ends and the center of the coke discharge port and the horizontal axis are within a range of 60 degrees to 80 degrees. The coke dry fire extinguishing equipment according to claim 1, which is arranged as described above.   When θ4 is the smaller one of the angles (θ1, θ2) formed between the straight lines (T1, T2) connecting the outer peripheral ends of the small head and the main head and the center of the coke discharge port and the horizontal axis (θ1, θ2), The coke dry fire extinguishing system according to any one of claims 1 to 3, wherein an inclination angle θ3 of the cone portion is in a range of θ4 to θ4-25 degrees.   The coke dry fire extinguishing according to any one of claims 1 to 4, wherein a diameter Dh of the coke discharge port is set to 1/2 or more of a diameter d of the small head (Dh ≧ 0.5d). Facility.   The small head has a distance H in the range of 1 to 5 times the diameter Dh of the coke discharge port, where H is the distance from the bottom surface of the coke angle formed below the small head to the coke discharge port. The coke dry fire extinguishing equipment according to any one of claims 1 to 5, wherein the coke dry fire extinguishing equipment is arranged at a position where   The coke dry fire extinguishing equipment according to any one of claims 1 to 6, wherein a gas flow path for blowing cooling gas is provided in the main head or the main head and the small head. The red hot coke is charged from the upper part of the chamber whose lower part is formed in a cone shape, and the red hot coke descending in the chamber is cooled by blowing the cooling gas from the cooling gas supply means installed in the lower part of the chamber. In the coke dry fire extinguishing method that discharges coke from the coke outlet provided at the bottom of the
At least one small head having a diameter d smaller than the main head is arranged below the main head having a diameter of a blast head installed at the lower part of the chamber, and the flow of coke descending in the chamber is rectified. Coke dry fire extinguishing method characterized by that.   The coke dry fire extinguishing method according to claim 8, wherein the red hot coke is cooled by blowing a cooling gas from the main head or the main head and the small head.

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