WO2019221282A1

WO2019221282A1 - Coke dry quenching facility

Info

Publication number: WO2019221282A1
Application number: PCT/JP2019/019718
Authority: WO
Inventors: 政嗣森田; 耀介渡邊; 正栄山口
Original assignee: 株式会社Ｉｈｉポールワース
Priority date: 2018-05-18
Filing date: 2019-05-17
Publication date: 2019-11-21
Also published as: CN111989385A; TWI683001B; KR20200127237A; TW202003865A; JPWO2019221282A1

Abstract

This coke dry quenching facility comprises: a cooling tower 3 having a cooling chamber surrounded by a wall section 3a; a gas supplying unit that is provided on the cooling tower and supplies a gas to the interior of the cooling chamber; a small smoke passage 13 that is formed in the wall section of the cooling tower and vertically above the gas supplying unit, and that opens to the cooling chamber; a partitioning member 100 that is provided in the small smoke passage and that partitions the small smoke passage into an upper flue 13c1 and a lower flue 13c2 positioned farther to the outside in a radial direction of the cooling tower than the upper flue; and a pressure detection unit 200 that detects the pressure of at least the lower flue.

Description

Coke dry fire extinguishing equipment

This disclosure relates to coke dry fire extinguishing equipment.

Conventionally, coke dry fire extinguishing equipment is known. The coke dry fire extinguishing equipment extinguishes and cools the coke extruded from the coke oven. The coke dry fire extinguishing equipment includes a cooling tower. In the cooling tower, a preliminary chamber and a cooling chamber continuous below the preliminary chamber are formed inside. Coke (red hot coke) is charged into the preliminary chamber from the top of the cooling tower. Coke (red hot coke) moves from the reserve chamber to the cooling chamber. An inert gas is supplied to the cooling chamber from below. Coke is extinguished and cooled by heat exchange with the inert gas.

The cooling tower is formed with a plurality of small flues that open to the cooling chamber in the circumferential direction. The inert gas goes up the cooling chamber while extinguishing and cooling the coke. The inert gas is discharged from the small flue to the outside of the cooling chamber.

Patent Documents 1 and 2 disclose so-called two-stage flue-type coke dry fire extinguishing equipment in which a partition member is provided in a small flue. In the two-stage flue type coke dry fire extinguishing equipment, the upper flue and the lower flue are formed in the small flue by the partition member.

¡Coke enters the small flue from the upper end of the cooling chamber opening due to the gas flow. On the other hand, the coke that has entered the small flue is returned to the cooling chamber by being dragged by the coke descending in the cooling chamber. Thus, a coke flow occurs in the small flue. In the two-stage flue type in which the small flue is divided into a plurality of flues, the total amount of coke entering the small flue is reduced compared to the single flue type in which no partition member is provided. Therefore, in the two-stage flue type, the ventilation capacity can be improved compared to the single flue type.

Japanese Patent No. 4137676 Japanese Unexamined Patent Publication No. 2016-23230

In the coke dry fire extinguishing equipment, the intrusion and escape of coke into the small flue are made continuously. At this time, the balance between the amount of coke entering the small flue (hereinafter referred to as “intrusion coke”) and the amount of coke exiting from the small flue (hereinafter referred to as “escape coke”) is lost, and the amount of intrusion coke escapes. If the amount of coke is greatly exceeded, normal operation becomes impossible.

Therefore, in general coke dry fire extinguishing equipment, the small flue can be visually observed from the inspection port of the annular flue ceiling so that the amount of coke in the small flue can be monitored. However, in the above-described two-stage flue type coke dry fire extinguishing equipment, the visual observation of the small flue is hindered by the partition member, and it may be difficult to monitor the amount of coke in the small flue.

In view of the above problems, the present disclosure is intended to provide a coke dry fire extinguishing facility capable of easily monitoring a dangerous amount of coke in a small flue.

In order to solve the above problems, a coke dry fire extinguishing facility according to one aspect of the present disclosure includes a cooling tower having a cooling chamber surrounded by a wall portion, and a gas supply that is provided in the cooling tower and supplies gas into the cooling chamber. And a small flue that is formed above the gas supply unit in the vertical direction and opens to the cooling chamber, and is provided in the small flue and includes a plurality of small flues in the vertical direction. And a pressure detection unit that detects the pressure of the lowermost flue located at the lowest position in the vertical direction among the plural flues.

In addition, the pressure detection unit includes a lower detection unit that detects the pressure of the lowermost flue, an upper detection unit that detects a pressure above the lower detection unit in a vertical direction, a pressure detected by the lower detection unit, and an upper portion A differential pressure deriving unit for deriving a differential pressure from the pressure detected by the detection unit.

Further, the upper detection unit may detect the pressure above the upper end of the partition member in the vertical direction.

Further, a control unit may be provided that performs a predetermined notification when the differential pressure derived by the differential pressure deriving unit exceeds a preset threshold value.

Further, the pressure detection unit may be provided in a plurality of different small flues.

According to the present disclosure, the dangerous amount of coke in the small flue can be easily monitored.

FIG. 1 is a diagram illustrating a coke dry fire extinguishing facility. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 3 is a perspective view of the partition member. 4 is a cross-sectional view taken along line IV-IV in FIG. FIG. 5 is a plan view of the partition member in four directions. FIG. 6 is a view for explaining an attachment state of the partition member. 7 is a cross-sectional view taken along line VII-VII in FIG. FIG. 8 shows a state in which the partition member is removed from FIG. FIG. 9 is a diagram illustrating a state where the amount of intrusion coke is increased. FIG. 10 is a flowchart for explaining an example of the control process of the coke dry fire extinguishing equipment. FIG. 11 is a diagram illustrating a coke dry fire extinguishing facility according to a first modification. FIG. 12 is a diagram illustrating a partition member according to a second modification. FIG. 13 is a diagram illustrating a partition member according to a third modification. FIG. 14 is a diagram illustrating a partition member according to a fourth modification.

Hereinafter, an embodiment of the present disclosure will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiment are merely examples for facilitating understanding, and do not limit the present disclosure unless otherwise specified. In the present specification and drawings, elements having substantially the same functions and configurations are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present disclosure are not illustrated. To do.

FIG. 1 is a diagram for explaining the coke dry fire extinguishing equipment 1. 2 is a cross-sectional view taken along line II-II in FIG. As shown in FIG. 1, the coke dry fire extinguishing equipment 1 includes a cooling tower 3. The cooling tower 3 includes a wall portion 3a formed in an annular shape. The cooling tower 3 is provided with a preliminary chamber 5 and a cooling chamber 7 surrounded by a wall 3a. The preliminary chamber 5 includes an input port 5a formed at the top of the wall 3a. Coke is charged into the cooling tower 3 from the charging port 5a. The cooling chamber 7 is a space continuous with the preliminary chamber 5 and is provided below the preliminary chamber 5. At the bottom of the cooling chamber 7, a gas supply port 7a (gas supply unit) penetrating the wall 3a is formed. A circulating gas mainly containing an inert gas such as nitrogen is supplied into the cooling tower 3 from the gas supply port 7a. A gas distribution mechanism 9 is provided at the bottom of the cooling chamber 7. The gas distribution mechanism 9 divides the circulating gas supplied into the cooling tower 3 from the gas supply port 7a.

An annular flue 11 is formed in a portion of the wall 3 a that surrounds the preliminary chamber 5. The annular flue 11 is an annular hole extending in the circumferential direction of the wall 3a. The wall 3a is provided with a plurality of small flues 13 having openings 13a opened in the cooling chamber 7. The small flue 13 is located above the gas supply port 7a and the gas distribution mechanism 9 in the vertical direction in the wall 3a. A plurality of small flues 13 are formed apart from each other in the circumferential direction of the cooling tower 3. The small flue 13 allows the annular flue 11 and the cooling chamber 7 to communicate with each other. That is, the small flue 13 is a passage connecting the cooling chamber 7 and the annular flue 11. The circulating gas is discharged from the cooling chamber 7 to the annular flue 11 through the small flue 13.

In the present embodiment, a portion of the wall portion 3a that partitions the annular flue 11 and the preliminary chamber 5 is defined as an inner wall portion 3b. That is, in the wall portion 3a, the radially inner side of the annular flue 11 becomes the inner wall portion 3b. Therefore, the opening 13a on the cooling chamber 7 side of the small flue 13 is positioned below the inner wall 3b. In the present embodiment, the preliminary chamber 5 is a space above the opening 13 a of the small flue 13. The opening 13 a is open to the cooling chamber 7. That is, the upper end portion of the opening 13 a of the small flue 13 serves as a boundary between the preliminary chamber 5 and the cooling chamber 7.

The inner diameter of the cooling chamber 7 is larger than the inner diameter of the preliminary chamber 5. In other words, the inner diameter of the portion surrounding the cooling chamber 7 in the wall 3a is larger than the inner diameter of the inner wall 3b. An inclined surface 3c whose inner diameter gradually increases downward from the lower end of the inner wall 3b is provided on the inner circumferential surface of the wall 3a. An opening 13a of the small flue 13 is formed on the inclined surface 3c. Therefore, the opening 13a of the small flue 13 is inclined with respect to the vertical direction. In addition, the protrusion which protrudes to the radial inside of the cooling tower 3 may be provided in the internal peripheral surface of the inner wall part 3b.

As shown in FIG. 2, an annular bottom 11 a of the annular flue 11 is formed on the wall 3 a. The annular bottom portion 11a extends in an annular shape, and an upper opening 13b of the small flue 13 opens into the annular bottom portion 11a. A plurality of air supply ports 15 are provided in the annular bottom portion 11a. The air supply port 15 is located between the adjacent upper openings 13b. As shown in FIG. 1, branch pipes 17 are connected to the plurality of air supply ports 15, respectively. The plurality of branch pipes 17 are connected to the fan 21 via the main pipe 19. The main pipe 19 supplies combustion air to the air supply port 15 via the branch pipe 17. The branch pipe 17 is provided with a flow rate adjusting valve 23 for adjusting the flow rate of the combustion air. The main pipe 19 is provided with a control valve 25.

The coke dry fire extinguishing equipment 1 includes a gravity settling type dust remover 31. The dust remover 31 has a dust removal wall portion 31 a connected to the cooling tower 3. A flue 33 is formed in the dust removing wall portion 31a. The dust removal wall portion 31 a is configured integrally with the wall portion 3 a of the cooling tower 3. The dust removal wall portion 31 a extends from the wall portion 3 a in the radial direction of the cooling tower 3. That is, a communication port 3d that opens the annular flue 11 to the outside of the wall 3a is formed in a part of the wall 3a surrounding the annular flue 11 over a part of the circumferential direction. The dust removal wall portion 31a extends in the radial direction of the cooling tower 3 from the outer peripheral surface of the wall portion 3a so as to cover the periphery of the communication port 3d. Thereby, the flue 33 formed in the dust removing wall portion 31a communicates with the annular flue 11 through the communication port 3d.

The dust removing wall portion 31 a includes a tapered portion 31 b that is inclined downward as it is separated from the cooling tower 3. Therefore, the cross-sectional area of the flue 33 increases as the distance from the cooling tower 3 increases. Further, a dust outlet 31c is formed in the dust removing wall portion 31a constituting the bottom surface of the flue 33. The downstream end of the taper part 31b is connected to the escape port 31c. As will be described in detail later, the circulating gas discharged from the cooling tower 3 to the flue 33 contains dust. The dust in the circulating gas is separated from the circulating gas by gravity in the process of flowing through the flue 33 and is discharged out of the system through the outlet 31c.

The coke dry fire extinguishing equipment 1 includes a boiler 41. The boiler 41 is provided in the subsequent stage of the dust remover 31. The boiler 41 recovers sensible heat of coke from the circulating gas that has passed through the dust remover 31. The boiler 41 includes a boiler wall 41a that is continuous with the dust removal wall 31a. Here, the boiler wall part 41a is comprised integrally with the dust removal wall part 31a. A screen tube 43 that is a part of a boiler tube that generates steam is provided in the boiler wall 41a. The screen tubes 43 are arranged in parallel with a gap so that the circulating gas can pass therethrough. Inside the boiler wall 41a, a heat exchange pipe 45 through which a heat medium flows is provided. Heat exchange is performed between the heat medium that circulates inside the heat exchange pipe 45 and the circulating gas that circulates in the boiler wall 41a, and the sensible heat of the coke is recovered.

A circulation duct 47 is connected to the boiler 41. The circulation duct 47 is connected to the downstream side in the circulation direction of the circulation gas from the heat exchange pipe 45 in the boiler wall 41a. The circulation duct 47 is connected to the suction side of the circulation blower 51. The discharge side of the circulation blower 51 is connected to the gas supply port 7 a of the cooling tower 3. The circulating gas that has passed through the boiler 41 is blown into the cooling tower 3 by the circulating blower 51.

According to the above-mentioned coke dry fire extinguishing equipment 1, coke (red hot coke) is charged into the cooling tower 3 from the inlet 5a. In the cooling tower 3, the preliminary chamber 5 and the cooling chamber 7 are filled with coke. Circulating gas is supplied into the cooling tower 3 through the gas supply port 7 a and the gas distribution mechanism 9 by the circulation blower 51. The circulating gas cools the coke in the process of rising in the cooling chamber 7. The coke cooled by the circulating gas is cut out from the lower part of the cooling chamber 7. Depending on the amount of coke cut out from the cooling chamber 7, coke is newly charged into the cooling tower 3 from the charging port 5a.

The circulating gas that has cooled the coke is discharged to the annular flue 11 through the small flue 13. At this time, combustion air is supplied from an air supply port 15 provided in the annular bottom 11 a of the annular flue 11. Combustion air is mixed with the hot circulating gas immediately after passing through the small flue 13. The combustion air burns combustible gas (hydrogen, carbon monoxide) contained in the mixed gas. The circulating gas is guided from the annular flue 11 to the dust remover 31. In the circulation gas, dust is separated by gravity settling in the course of flowing through the flue 33. The dust separated from the circulating gas is discharged out of the system from the outlet 31c.

The circulating gas from which the dust has been separated is guided to the boiler 41. As for the circulating gas, the sensible heat of the coke is recovered by the screen tube 43 and the heat exchange pipe 45. The circulating gas cooled by the heat recovery is sucked by the circulating blower 51 through the circulation duct 47. The circulating gas sucked into the circulating blower 51 is again supplied into the cooling tower 3 from the gas supply port 7a.

Here, the small flue 13 is provided with a partition member 100. The coke dry fire extinguishing equipment 1 of the present embodiment is configured as a multi-stage flue type in which a small flue 13 is partitioned by a partition member 100 into a plurality of flues (passages). In the present embodiment, a two-stage flue type in which the small flue 13 is divided into two flues (passages) by the partition member 100 will be described.

FIG. 3 is a perspective view of the partition member 100. 4 is a cross-sectional view taken along line IV-IV in FIG. FIG. 5 is a plan view of the partition member 100 in four directions. The partition member 100 includes a plate-shaped main body 102. Hereinafter, the x direction illustrated in FIG. 3 is referred to as the width direction of the main body 102, and the y direction illustrated in FIG. 3 is referred to as the longitudinal direction of the main body 102. As shown in FIG. 4, the main body 102 is configured by stacking a refractory material on a metal (for example, stainless steel) plate material 104.

Specifically, the plate member 104 includes a flat plate-like flat surface portion 104a and a pair of side surface portions 104b. The side surface portions 104b are provided at both ends in the width direction of the flat surface portion 104a. The side surface portion 104b has a cross-sectional shape in which both ends of a flat plate shape are bent by approximately 90 degrees. The pair of side surface portions 104 b are opposed to the width direction of the main body portion 102. The flat surface portion 104a and the side surface portion 104b extend by the same length in the longitudinal direction. In the present embodiment, the flat surface portion 104a and the side surface portion 104b are composed of separate members. However, the present invention is not limited to this, and the flat surface portion 104a and the side surface portion 104b may be formed by bending one member.

The plate member 104 has a cross-sectional shape in which the side surface portion 104b is projected at an angle of approximately 90 degrees on the front surface side and the back surface side of the flat surface portion 104a. On the surface side of the flat surface portion 104a, a refractory material layer 106 (shown by cross-hatching in FIG. 4) made of a refractory material is provided in a portion surrounded by the flat surface portion 104a and the side surface portion 104b. In other words, the main body 102 is configured by stacking refractories on the plate material 104. Here, the refractory layer 106 is formed of an indeterminate refractory material (castable refractory material, refractory concrete) in which a binder is blended with an aggregate obtained by pulverizing the refractory material.

The plate member 104 is provided with a plurality of reinforcing members 108. The reinforcing member 108 is composed of a rod member such as a castable anchor or an anchor bolt. The reinforcing member 108 is made of metal. The reinforcing member 108 is formed in a V shape, for example. However, the reinforcing member 108 may have a shape different from the V shape, such as a U shape, a J shape, or an L shape. The reinforcing member 108 is welded to the plate material 104. However, the reinforcing member 108 may be fastened to the plate material 104 or may be fitted to the plate material 104. The plurality of reinforcing members 108 are spaced apart from each other in the width direction of the main body 102. The plurality of reinforcing members 108 are spaced apart from each other in the longitudinal direction of the main body 102. That is, the plurality of reinforcing members 108 are arranged on the main body 102 in a lattice shape or a zigzag shape. The reinforcing member 108 has a V-shaped portion embedded in the refractory layer 106. In other words, the V-shaped part of the reinforcing member 108 is covered with an irregular refractory. Thus, the reinforcing member 108 is disposed in the refractory layer 106.

A refractory layer 110 is provided on the opposite side of the refractory layer 106 with respect to the flat portion 104 a, that is, on the back side of the plate material 104. Here, the refractory layer 110 is formed of a regular refractory (a refractory brick or a refractory heat insulating brick). As described above, the main body 102 of the partition member 100 has the refractory layer 106 laminated on the surface side of the plate member 104 and the refractory layer 110 laminated on the back side of the plate member 104. In other words, in the main body 102, the plate material 104 is covered with the

refractory layers

106 and 110.

Here, it is assumed that the refractory layer 106 is made of an irregular refractory and the refractory layer 110 is made of a fixed refractory. That is, the refractory provided in the main body portion 102 includes an irregular refractory. However, for example, both of the

refractory layers

106 and 110 may be formed of an amorphous refractory or a regular refractory. Further, the refractory layer 106 may be formed of a regular refractory, and the refractory layer 110 may be formed of an amorphous refractory. Furthermore, only one of the

refractory layers

106 and 110 may be provided.

As shown in FIGS. 3 and 5, the partition member 100 includes a pair of locking portions 120 provided on both side surfaces of the main body portion 102 in the width direction. The pair of locking portions 120 are separated from each other in the width direction of the main body portion 102. The locking part 120 is provided at one end (upper end) in the longitudinal direction of the main body part 102 and protrudes to the back side of the main body part 102. Of the locking portion 120, a bottom portion 120 a that protrudes to the back side of the main body portion 102 extends in the horizontal direction (the radial direction of the cooling tower 3) in a state where the partition member 100 is attached to the small flue 13. . The locking portion 120 includes a fitting portion 122 that protrudes in the vertical direction from the bottom portion 120a. The fitting portion 122 is continuous to the side of the bottom portion 120a that is separated from the main body portion 102.

In addition, the latching | locking part 120 may be comprised with an irregular refractory material and may be comprised with a regular refractory material. For example, the refractory layer 106 of the main body 102 may be extended to form the locking portion 120 (fitting portion 122). The refractory layer 110 of the main body 102 may be extended to form the locking portion 120 (fitting portion 122). Alternatively, the locking member 120 may be configured by protruding the plate member 104 of the main body 102 in the width direction and covering the protruding portion of the plate member 104 with a refractory.

Furthermore, as shown in FIG. 5, the partition member 100 includes leg portions 130 on the back side of the main body portion 102. The leg portion 130 protrudes at a substantially right angle with respect to the back surface of the main body portion 102. The leg portion 130 is located near the center of the main body portion 102 in the width direction and the longitudinal direction. The length in the width direction of the leg portion 130 is shorter than the length in the width direction of the main body portion 102. Further, the length of the leg portion 130 in the longitudinal direction is shorter than the length of the main body portion 102 in the longitudinal direction. The leg portion 130 is provided above the lower end in the longitudinal direction of the main body portion 102 in the vertical direction. Here, the leg portion 130 is made of the same refractory material as the refractory layer 110 provided on the back side of the main body portion 102. However, the material of the leg part 130 is not particularly limited, and may be composed of any of metal, refractory, and combinations thereof.

FIG. 6 is a diagram for explaining an attachment state of the partition member 100. 7 is a cross-sectional view taken along line VII-VII in FIG. FIG. 8 shows a state in which the partition member 100 is removed from FIG. As described above, a plurality of small flues 13 are provided apart from each other in the circumferential direction of the wall 3a. Below, the part facing the radial direction of the cooling tower 3 with respect to the inner wall part 3b among the wall parts 3a surrounding the small flue 13 is demonstrated as the outer wall part 3e. A portion connecting the inner wall portion 3b and the outer wall portion 3e will be described as a connecting wall portion 3f (see FIG. 8).

As shown in FIG. 6, the small flue 13 includes a lower passage 13c and an upper passage 13d. The lower passage 13c extends obliquely upward from the opening 13a. The upper passage 13d is continuous above the lower passage 13c and extends along the vertical direction. The upper passage 13d includes an upper opening 13b (see FIG. 2) that opens to the annular bottom 11a of the annular flue 11 described above.

The wall 3a (connection wall 3f) surrounding the small flue 13 is provided with a support wall 3g. In FIG. 6, the support wall 3g is shown in black for easy understanding. As shown in FIG. 8, the support wall portion 3 g is provided on the opposing surface of the wall portion 3 a that faces in the circumferential direction. That is, two support wall portions 3g are disposed opposite to the small flue 13 so as to be separated from each other in the circumferential direction. The support wall 3g protrudes into the small flue 13 from the wall 3a. Support wall portion 3g is provided with a horizontal portion 3g ₁ and the inclined portion 3g _2. As shown in FIG. 6, the horizontal portion 3 g ₁ is located above the opening 13 a of the small flue 13 in the vertical direction. Horizontal portion 3 g ₁ is located in the upper passage 13d. Horizontal portion 3 g ₁ extends in the horizontal direction. Inclined portion 3 g ₂ extends from the horizontal portion 3 g ₁ downward is located in the lower passage 13c. Inclined portion 3 g ₂ has a lower end side is inclined in a direction which is located inward in the radial direction from the upper end side.

The partition member 100 is placed on the support wall 3g. More specifically, on the horizontal portion 3 g _1, the bottom 120a of the partition member 100 is placed. Further, on the inclined portion 3 g _2, both side surfaces in the width direction of the main body 102 is placed. As described above, the side surface portions 104b made of a metal plate material are provided on both side surfaces of the main body portion 102 in the width direction (see FIG. 4). The inclined portion 3 g ₂ becomes the side surface portion 104b is placed.

Fitting portion 122 protrudes downward in the vertical direction than the horizontal portion 3 g _1. The back and the fitting portion 122 of the body portion 102, the horizontal portion 3 g ₁ is held. Thereby, falling off of the partition member 100 is prevented. In this way, the partition member 100 is held in the small flue 13 by the support wall 3g. In a state where the partition member 100 is held in the small flue 13, the tip portion of the leg portion 130 in the protruding direction comes into contact with the wall portion 3a. However, in a state where the partition member 100 is held in the small flue 13, a slight gap may be formed between the distal end portion of the leg portion 130 in the protruding direction and the wall portion 3a.

The partition member 100 divides the small flue 13 into two flues in the lower passage 13c. That is, the lower passage 13c of the small flue 13, an upper flues 13c _1, is partitioned into a lower flue 13c _2. The lower flue 13c ₂ is located below the upper flue 13c _{1 in the} vertical direction (on the wall 3a side of the cooling tower 3 (outside in the radial direction of the cooling tower 3)). Here, the lower stage flue 13c2 is the lowermost stage flue located at the lowest position in the vertical direction among the plurality of flues. Body portion 102 of the partition member 100, the surface facing the upper flue 13c _1, the rear surface facing the lower flue 13c _2. Accordingly, the body portion 102 of the partition member 100, so that the refractory layer 106 (monolithic refractories) is provided on the surface of the upper flue 13c ₁ side of the plate 104. Further, the main body 102 of the partition member 100 is provided with a refractory layer 110 (standard refractory) on the surface of the plate member 104 on the lower stage 13c ₂ side. Legs 130 of the partition member 100 is provided in the lower flue 13c _2. The leg 130 extends from the back surface of the main body 102 facing the lower flue 13c ₂ toward the wall 3a.

As shown in FIG. 6, coke enters the small flue 13 from the opening 13a. The intrusion coke that has entered the small flue 13 contacts the partition member 100. That is, the intrusion coke contacts the partition member 100 in a state where it is exposed to a high temperature atmosphere, and the powder coke collides. Therefore, the partition member 100 is in a state where it is easily worn out by coke. Since the partition member 100 of this embodiment has the main-body part 102 by which the refractory material was laminated | stacked on the metal board | plate material 104, heat resistance and abrasion resistance are high. Therefore, the service life of the partition member 100 is increased, and the frequency of maintenance can be reduced. The temperature of the passing gas, the flow velocity, and the powder coke in the gas vary depending on the operating conditions such as the charging coke temperature. Therefore, the material of the partition member 100 may be determined for each plant.

A coke load acts on the main body 102 of the partition member 100 from the upper flue 13c ₁ side. In the main body 102, the plate member 104 and the refractory layer 106 are integrated by a reinforcing member 108. Therefore, the partition member 100 can sufficiently withstand the coke load. The main body 102 is pressed outward in the radial direction of the cooling tower 3 by the load of coke acting from the upper stage 13c ₁ side. Legs 130 are provided on the back side of the main body 102. Therefore, the coke load acts on the wall portion 3 a via the leg portion 130. In addition, both ends in the width direction of the main body 102 are supported by the support wall 3g. Therefore, the load of coke is received by the wall 3a, and the creep strength of the partition member 100 is improved.

Since the partition member 100 only needs to be placed on the support wall 3g, the replacement work is easy, and the operating rate of the coke dry fire extinguishing equipment 1 can be increased.

Height of penetration coke in the lower flues 13c ₂ is lower than the height of the penetration coke in the upper flues 13c _1. The leg part 130 is provided above the height position of the intrusion coke in the lower flue 13c ₂ during normal operation. That is, by providing the leg part 130 above the lower end of the main body part 102, contact with the coke is avoided and the ventilation capacity is not adversely affected. On the other hand, a part or the whole of the leg part 130 is provided in a range lower than the height of the intrusion coke in the upper stage flue 13c ₁ in the main body part 102. As described above, the leg portion 130 extends from the vicinity of the center of the main body portion 102 toward the lower end side. The legs 130, load entering coke acting from the upper flue 13c ₁ side to the main body 102, likely acting on the wall portion 3a of the cooling tower 3. However, the arrangement and shape of the legs 130 are not limited to this.

In addition, during the operation of the coke dry fire extinguishing equipment 1, the intrusion and escape of the coke into the small flue 13 are continuously performed. At this time, the balance between the amount of coke that enters the small flue 13 and the amount of coke that escapes from the small flue 13 may be lost. When the intrusion coke amount greatly exceeds the escape coke amount, normal operation becomes impossible. Therefore, it is necessary to constantly monitor the amount of coke in the small flue 13.

However, when the partition member 100 is provided, the visibility of the small flue 13 is lowered, and it may be difficult to monitor the amount of coke in the small flue 13. If it is left without noticing that the amount of intrusion coke has exceeded the limit, the amount of intrusion coke increases without permission, leading to an irreversible state. Therefore, a means for constantly monitoring the amount of intrusion coke in the small flue 13 and knowing the amount of intrusion coke is important.

The coke dry fire extinguishing equipment 1 of this embodiment includes a pressure detection unit 200 for estimating the amount of coke in the small flue 13. The pressure detection unit 200 includes a lower detection unit 200a, an upper detection unit 200b, and a differential pressure deriving unit 200c. Lower sensing unit 200a includes a pipe having one end opened to the lower flue 13c _2, and the other end is connected to the differential-pressure detecting portion 200c. Lower sensing unit 200a detects the pressure of the lower flues 13c _2. The upper detection unit 200b includes a pipe having one end opened to the upper passage 13d and the other end connected to the differential pressure deriving unit 200c. The upper detection unit 200 b detects the pressure in the vertical direction above the upper end of the partition member 100 (here, the upper passage 13 d) in the small flue 13. The differential pressure deriving unit 200c derives a differential pressure between the pressure detected by the lower detection unit 200a and the pressure detected by the upper detection unit 200b.

In the present embodiment, the pressure detection unit 200 is provided in a plurality of different small flues 13. Specifically, as shown in FIG. 2, four pressure detection units 200 are provided apart from each other in the circumferential direction of the cooling tower 3. These pressure detection units 200 are approximately 90 degrees in the circumferential direction, except for one pressure detection unit 200 arranged in the vicinity of the communication port 3d communicating with the flue 33 of the dust remover 31 in the cooling tower 3. The phase is shifted.

As shown in FIG. 6, the lower detection unit 200 a detects a pressure above the position where the coke can invade in the lower flue 13 c ₂ during normal operation of the coke dry fire extinguishing equipment 1. Therefore, if the amount of intrusion coke in the small flue 13 is within an appropriate range, the difference between the pressure detected by the lower detection unit 200a and the pressure detected by the upper detection unit 200b is small.

FIG. 9 is a diagram illustrating a state where the amount of intrusion coke is increased. A penetration amount of coke to the small flue 13, the balance between the escape amount of coke from the small flue 13 collapses, as shown in FIG. 9, entering amount of coke in the upper flue 13c ₁ is increased. In this case, the intrusion coke in the upper flue 13c ₁ gets over the partition member 100 and enters the lower flue 13c ₂ from above. As a result, the amount of intrusion coke in the lower flue 13c ₂ increases. At this time, the lower flues 13c _2, when entering coke closes the lower detecting unit 200a, the higher the pressure the lower detecting unit 200a detects.

As a result, the difference between the pressure detected by the lower detection unit 200a and the pressure detected by the upper detection unit 200b increases. Thus, the differential pressure between the lower flues 13c ₂ and the upper passage 13d has a coke content and correlation in the small flue 13 (proportional). Thus, the differential pressure between the lower flues 13c ₂ and the upper passage 13d, it is possible to estimate the intrusion amount of coke in the small flue 13.

The coke dry fire extinguishing equipment 1 includes a control unit 202 and a notification unit 204. The control unit 202 performs a determination process for determining whether the differential pressure derived by the differential pressure deriving unit 200c is greater than or equal to a preset threshold value. The notification unit 204 includes a speaker, a display unit, and the like that output an alarm. The control unit 202 outputs an alarm from the notification unit 204 when the determination process determines that the differential pressure is equal to or greater than the threshold value.

FIG. 10 is a flowchart for explaining an example of the control process of the coke dry fire extinguishing equipment 1. The control unit 202 repeatedly performs the process shown in FIG. 10 at predetermined time intervals. The control unit 202 acquires the differential pressure from the pressure detection unit 200 (differential pressure deriving unit 200c) (S1). The control unit 202 performs a determination process for determining whether the acquired differential pressure is greater than or equal to a preset threshold value (S2). And when it determines with a differential pressure | voltage being more than a threshold value (YES of S3), the control part 202 outputs a warning from the alerting | reporting part 204, and starts predetermined alerting | reporting (S4). On the other hand, when it is determined that the differential pressure is not greater than or equal to the threshold (NO in S3), the control unit 202 determines whether the determination process has been completed for all the pressure detection units 200 (S5). And if the determination process is complete | finished about all the pressure detection parts 200 (YES of S5), the said process will be complete | finished. In addition, if the determination process has not been completed for all the pressure detection units 200 (NO in S5), the above process is repeated for the pressure detection units 200 that have not been subjected to the determination process.

As described above, according to the coke dry quenching equipment 1 of the present embodiment, the differential pressure between the lower flues 13c ₂ and the upper passage 13d, entering coke amounts of the small flue 13 are identified. Accordingly, the amount of intrusion coke in the small flue 13 can be monitored accurately and easily.

FIG. 11 is a diagram illustrating a coke dry fire extinguishing facility 1A according to a first modification. The coke dry fire extinguishing equipment 1A of the first modification is different from the above embodiment in that two partition members 100 are provided in the small flue 13. Therefore, description of the same configuration as that of the above embodiment will be omitted here, and different points from the above embodiment will be described. The coke dry fire extinguishing equipment 1 A includes two support wall portions 3 g in the small flue 13. The two support wall portions 3g are spaced apart in the vertical direction. A partition member 100 is placed on each of the two support wall portions 3g. The two partition members 100 are arranged in the small flue 13 while being separated in the vertical direction.

The lower passage 13c of the small flue 13 is partitioned by the two partition members 100 into three flues (passages), that is, an upper flue 13c ₁ , a lower flue 13c ₂ and an intermediate flue 13c ₃ . The upper stage flue 13c ₁ is positioned above the lower stage flue 13c ₂ and the middle stage flue 13c _{3 in the} vertical direction. The lower stage flue 13c ₂ is located at the lowermost position in the vertical direction among the three flues. That is, in the coke dry fire extinguishing equipment 1 </ _b > A, the lower flue 13 c ₂ is the lowermost flue located at the lowest position in the vertical direction among the plural flues.

The middle flue 13c ₃ is located between the upper flue 13c ₁ and the lower flue 13c ₂ . That is, the middle stage flue 13 c ₃ is located between the two partition members 100.

The leg portion 130 of the partition member 100 provided above in the vertical direction has a surface on the distal end side in the protruding direction in contact with the surface of the main body portion 102 of the partition member 100 provided below in the vertical direction. Thereby, the wall part 3a will receive the load of the intrusion coke which acts on the partition member 100 located relatively upward in the vertical direction via the partition member 100 located relatively below in the vertical direction. . At least a portion of the middle flues 13c ₃ and upper flues 13c ₁ and the leg portion 130 of the partition member 100 for partitioning is provided to a lower range than the height of the penetration coke in the upper flues 13c _1. In addition, at least a part of the leg portion 130 of the partition member 100 that partitions the middle flue 13c ₃ and the lower flue 13c ₂ is provided in a range lower than the height of the intrusion coke in the middle flue 13c ₃ . Thereby, the load of intrusion coke tends to act on the wall 3 a of the cooling tower 3. However, the arrangement and shape of the legs 130 are not limited to this.

Also in the coke dry fire extinguishing equipment 1A, as in the above embodiment, the lower detection unit 200a detects the pressure of the lower flue 13c ₂ (the lowermost flue) located at the lowest position in the vertical direction among the plural flues. .

As described above, according to the coke dry fire extinguishing equipment 1A of the first modification, the lower passage 13c is partitioned into three flues. Thereby, the ventilation capability can be further improved.

FIG. 12 is a diagram illustrating a partition member 100A according to a second modification. As shown in FIG. 12, the partition member 100 A of the second modification is different from the above embodiment in that the refractory layer 110 is not provided on the back side of the plate material 104. That is, the partition member 100A has the back side of the flat surface portion 104a exposed. In other words, the partition member 100 A is provided with the plate member 104 on the most back side of the main body 102 (the side facing the flue located relatively below in the vertical direction).

A load of intrusion coke acts on the main body 102. Therefore, a bending stress acts on the main body 102 in a direction in which the center side in the width direction protrudes toward the back side. The partition member 100A is provided with a plate member 104 on the back side where the bending stress becomes relatively large. Here, the back side of the plate member 104 (i.e., the lower flues 13c ₂ side (see FIG. 6)), the surface side of the plate member 104 (i.e., upper flues 13c ₁ side (see FIG. 6)) at a relatively low temperature as compared with is there. Therefore, the refractory layer 110 of the above embodiment is not provided on the back side of the plate material 104 of the second modified example. Thereby, 100 A of partition members of a 2nd modification can achieve weight reduction rather than the partition member 100 of the said embodiment. Here, a refractory layer 106 made of an irregular refractory is provided on the surface side of the plate member 104. However, the present invention is not limited to this, and a refractory layer 110 made of a regular refractory may be provided on the surface side of the plate member 104.

FIG. 13 is a diagram illustrating a partition member 100B according to a third modification. As shown in FIG. 13, the partition member 100 B according to the third modification is provided with a refractory layer 106 on both the front side and the back side of the plate member 104. Further, reinforcing members 108 are provided on both the front side and the back side of the plate member 104. Accordingly, the reinforcing member 108 is provided on each of the refractory layers 106 provided on both the front side and the back side of the plate member 104. Furthermore, the partition member 100B is curved so that the center side in the width direction of the main body 102 (the plate material 104 and the refractory layer 106) protrudes to the surface side compared to the both end sides.

Here, a refractory layer 106 made of an irregular refractory is provided on both the front side and the back side of the plate member 104. However, the present invention is not limited to this, and a refractory layer 110 made of a regular refractory may be provided on one or both of the front side and the rear side of the plate member 104. In addition, the main body 102 (the plate member 104 and the refractory layer 106) may be curved so that the center side in the width direction protrudes to the back side as compared to the both end sides.

FIG. 14 is a diagram illustrating a partition member 100C according to a fourth modification. As shown in FIG. 14, the partition member 100 C of the fourth modification is provided with a refractory layer 106 on the surface side of the plate material 104. The partition member 100 C is curved so that the center side in the width direction of the main body 102 (the plate material 104 and the refractory layer 106) protrudes to the surface side compared to the both end sides. Here, a refractory layer 106 made of an irregular refractory is provided on the surface side of the plate member 104. However, the present invention is not limited to this, and a refractory layer 110 made of a regular refractory may be provided on the surface side of the plate member 104. In addition, the main body 102 (the plate member 104 and the refractory layer 106) may be curved so that the center side in the width direction protrudes to the back side as compared to the both end sides.

The

partition members

100A, 100B, and 100C of the second to fourth modifications described above are applicable to both the coke dry fire extinguishing equipment 1 of the embodiment and the coke dry fire extinguishing equipment 1A of the first modification. is there.

In the embodiment and the first modification, the pressure detection unit 200 includes the lower detection unit 200a, the upper detection unit 200b, and the differential pressure deriving unit 200c. However, the pressure detection unit 200 may include only the lower detection unit 200a, for example. In this case, the intrusion coke amount may be estimated based on the pressure detected by the lower detection unit 200a. Anyway, the pressure sensing unit 200 may be detected at least the pressure of the lower flues 13c _2.

Further, in the above embodiment and the first modification, the case has been described in which the upper detection unit 200b detects the pressure above the upper end of the partition member 100 in the vertical direction, that is, the pressure in the upper passage 13d. However, the upper detection unit 200b, if the upper is than the lower detection unit 200a, for example, may be detected pressure of the upper flue 13c _1, may detect the pressure of the lower flues 13c _2.

In the above embodiment and the first modification, the pressure detection unit 200 is provided in a plurality of different small flues 13, but only one pressure detection unit 200 may be provided. Further, the pressure detection unit 200 may be provided at any position in the circumferential direction of the cooling tower 3.

In the embodiment and the first modification, the control unit 202 outputs an alarm (predetermined notification) from the notification unit 204 when the differential pressure becomes equal to or greater than a threshold value. However, the control unit 202 may change the operation conditions such as stopping the operation of the coke dry fire extinguishing facility 1 instead of or in addition to the alarm output.

Moreover, in the said embodiment and 1st modification, when the differential pressure becomes more than a threshold value in any one pressure detection part 200 among the several pressure detection parts 200, the control part 202 outputs an alarm. It was. However, an alarm may be output when the differential pressure is equal to or greater than a threshold value in two or more pressure detection units 200. In this way, false alarms can be prevented.

In the above embodiment, the lower passage 13c is divided into two flues. In the first modification, the lower passage 13c is divided into three flues, but the lower passage 13c has four or more flues. You may partition.

As mentioned above, although embodiment was described referring an accompanying drawing, it cannot be overemphasized that this indication is not limited to this embodiment. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims and that they naturally fall within the technical scope.

This disclosure can be used for coke dry fire extinguishing equipment.

1: Coke dry fire extinguishing equipment 3: Cooling tower 3a: Wall part 7: Cooling chamber 7a: Gas supply port (gas supply part) 13: Small flue 13c ₁ : Upper stage flue 13c ₂ : Lower stage flue 100: Partition member 200: Pressure Detection unit 200a: Lower detection unit 200b: Upper detection unit 200c: Differential pressure deriving unit 202: Control unit

Claims

A cooling tower having a cooling chamber surrounded by a wall;
A gas supply unit that is provided in the cooling tower and supplies gas into the cooling chamber;
Of the wall portion of the cooling tower, a small flue that is formed above the gas supply unit in the vertical direction and opens into the cooling chamber;
A partition member provided in the small flue and partitioning the small flue into a plurality of flues in a vertical direction;
At least a pressure detection unit that detects the pressure of the lowest stage flue located in the lowest position in the vertical direction among the plurality of flues;
Coke dry fire extinguishing equipment.
The pressure detector is
A lower detection part for detecting the pressure of the lowermost flue;
An upper detector that detects a pressure above the lower detector in the vertical direction;
A differential pressure deriving unit for deriving a differential pressure between the pressure detected by the lower detection unit and the pressure detected by the upper detection unit;
The coke dry fire extinguishing equipment according to claim 1 containing.
[Claim 3] The coke dry fire extinguishing equipment according to claim 2, wherein the upper detection unit detects a pressure above the upper end of the partition member in a vertical direction.
The coke dry fire extinguishing equipment according to claim 2 or 3, further comprising a control unit that performs a predetermined notification when the differential pressure derived by the differential pressure deriving unit is equal to or greater than a preset threshold value.
The coke dry fire extinguishing equipment according to any one of claims 1 to 4, wherein the pressure detection unit is provided in a plurality of different small flues.