CN111989385A - Coke dry fire extinguishing apparatus - Google Patents
Coke dry fire extinguishing apparatus Download PDFInfo
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- CN111989385A CN111989385A CN201980026179.9A CN201980026179A CN111989385A CN 111989385 A CN111989385 A CN 111989385A CN 201980026179 A CN201980026179 A CN 201980026179A CN 111989385 A CN111989385 A CN 111989385A
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- Prior art keywords
- flue
- coke
- pressure
- detection unit
- partition member
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B39/00—Cooling or quenching coke
- C10B39/02—Dry cooling outside the oven
Abstract
The coke dry fire extinguishing apparatus of the present invention comprises: a cooling tower (3) having a cooling chamber surrounded by a wall portion (3 a); a gas supply unit provided in the cooling tower and supplying gas into the cooling chamber; a small flue (13) which is formed in the wall of the cooling tower above the gas supply part in the vertical direction and opens into the cooling chamber; a partition member (100) provided in the small flue and dividing the small flue into upper flue (13 c)1) And a lower flue (13 c) located radially outward of the cooling tower from the upper flue2) (ii) a And a pressure detection unit (200) that detects at least the pressure of the lower flue.
Description
Technical Field
The present disclosure relates to a coke dry fire suppression apparatus.
Background
Today, coke dry fire suppression equipment is known. The coke dry-type fire extinguishing apparatus extinguishes and cools the coke pushed out from the coke oven. A coke dry fire extinguishing apparatus is provided with a cooling tower. The cooling tower has a preliminary chamber and a cooling chamber formed therein and continuing to a lower portion of the preliminary chamber. The preliminary chamber is charged with coke (red hot coke) from the top of the cooling tower. The coke (red hot coke) moves from the preparation chamber to the cooling chamber. An inert gas is supplied to the cooling chamber from below. The coke is put out a fire and cooled by heat exchange with inert gas.
In the cooling tower, a plurality of small flues opening into the cooling chamber are formed in the circumferential direction. The inert gas rises in 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 a coke dry fire extinguishing system of a so-called two-stage flue type in which a partition member is provided in a small flue. In a two-stage flue type coke dry-type fire extinguishing apparatus, an upper stage flue and a lower stage flue are formed in a small flue by a partition member.
The coke is pushed by the airflow and enters the small flue from the upper end of the opening of the cooling chamber. On the other hand, the coke entering the small flue is pulled by the coke descending in the cooling chamber and returned to the cooling chamber. In this way, a flow of coke is created within 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 as compared with the single flue type in which no dividing member is provided. Therefore, the two-stage flue type can improve ventilation capacity as compared with the single flue type.
Documents of the prior art
Patent document
Patent document 1: japanese patent No. 4137676
Patent document 2: japanese patent laid-open publication No. 2016-23230
Disclosure of Invention
Problems to be solved by the invention
In coke dry fire suppression plants, the intrusion and expulsion of coke from the small flue is continuous. At this time, the amount of coke entering the small flue (hereinafter referred to as "entering coke") and the amount of coke escaping from the small flue (hereinafter referred to as "escaping coke") are out of balance, and if the entering coke amount greatly exceeds the escaping coke amount, the normal operation cannot be performed.
Therefore, in a general coke dry-type fire extinguishing apparatus, the small flue can be visually observed from the inspection port of the ceiling portion of the circular flue so that the amount of coke in the small flue can be monitored. However, in the above two-stage flue type coke dry-type fire extinguishing system, visual observation of the small flue is obstructed by the partition member, and monitoring of the amount of coke in the small flue may become difficult.
In view of the above-described problems, an object of the present disclosure is to provide a coke dry fire extinguishing facility capable of easily monitoring a dangerous coke amount in a small flue.
Means for solving the problems
In order to solve the above problems, a coke dry fire extinguishing apparatus according to one aspect of the present disclosure includes: a cooling tower having a cooling chamber surrounded by a wall portion; a gas supply unit provided in the cooling tower and supplying gas into the cooling chamber; a small flue formed in the wall of the cooling tower above the gas supply portion in the vertical direction and opening into the cooling chamber; a partition member provided in the small flue and dividing the small flue into a plurality of flues in the vertical direction; and a pressure detection unit that detects at least a pressure of a lowermost flue located at the lowest position in the vertical direction among the plurality of flues.
Preferably, the pressure detection unit includes: a lower detection unit that detects a pressure of the lowermost flue; an upper detection unit that detects a pressure above the lower detection unit in the vertical direction; and a differential pressure deriving unit that derives a differential pressure between the pressure detected by the lower detection unit and the pressure detected by the upper detection unit.
Preferably, the upper detection unit detects a pressure vertically above the upper end of the partition member.
Preferably, the control unit is provided to perform a predetermined report when the differential pressure derived by the differential pressure deriving unit is equal to or greater than a predetermined threshold value.
Preferably, the pressure detection unit is provided in a plurality of different small flues.
The effects of the invention are as follows.
According to the present disclosure, dangerous coke amounts in small flues can be easily monitored.
Drawings
FIG. 1 is a diagram illustrating a coke dry fire suppression facility.
Fig. 2 is a sectional view taken along line II-II of fig. 1.
Fig. 3 is a perspective view of the partition member.
Fig. 4 is a sectional view taken along line IV-IV of fig. 3.
Fig. 5 is a top view of the partition member in four directions.
Fig. 6 is a view illustrating an installation state of the partition member.
Fig. 7 is a sectional view taken along line VII-VII of fig. 6.
Fig. 8 shows a state where the partition member is removed from fig. 7.
Fig. 9 is a diagram illustrating a state after the amount of coke entering increases.
Fig. 10 is a flowchart illustrating an example of the control process of the coke dry quenching apparatus.
Fig. 11 is a diagram illustrating a coke dry quenching apparatus 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.
Detailed Description
Hereinafter, one embodiment of the present disclosure will be described in detail with reference to the drawings. Dimensions, materials, other specific numerical values, and the like shown in the embodiments are merely examples for facilitating understanding, and the present disclosure is not limited to these specific numerical values unless otherwise specified. In the present specification and the drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, so that overlapping description is omitted, and elements not directly related to the present disclosure are not illustrated.
Fig. 1 is a diagram illustrating a coke dry fire extinguishing apparatus 1. Fig. 2 is a sectional view taken along line II-II of fig. 1. As shown in fig. 1, the coke dry quenching apparatus 1 includes a cooling tower 3. The cooling tower 3 includes a wall portion 3a formed annularly. The cooling tower 3 is provided with a preliminary chamber 5 and a cooling chamber 7 surrounded by a wall portion 3 a. The preliminary chamber 5 includes an inlet 5a formed in the top of the wall 3 a. Coke is charged into the cooling tower 3 through the charging port 5 a. The cooling chamber 7 is a space continuous with the preliminary chamber 5, and is provided below the preliminary chamber 5. A gas supply port 7a (gas supply portion) penetrating the wall portion 3a is formed in the bottom of the cooling chamber 7. A circulation gas mainly composed of an inert gas such as nitrogen gas is supplied into the cooling tower 3 from the gas supply port 7 a. Further, a gas distribution mechanism 9 is provided at the bottom of the cooling chamber 7. The gas distribution mechanism 9 divides the circulation gas supplied from the gas supply port 7a into two flows in the cooling tower 3.
An annular flue 11 is formed in a portion of the wall portion 3a formed around the preliminary chamber 5. The annular flue 11 is an annular hole extending in the circumferential direction of the wall 3 a. The wall portion 3a is provided with a plurality of small flues 13 that open the openings 13a to 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 3 a. The small flues 13 are formed in plurality in a spaced manner in the circumferential direction of the cooling tower 3. The small flue 13 communicates the annular flue 11 with the cooling chamber 7. 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 separates the annular flue duct 11 and the preliminary chamber 5 is defined as an inner wall portion 3 b. That is, the radially inner side of the annular flue 11 in the wall portion 3a becomes the inner wall portion 3 b. Therefore, the opening 13a of the small flue 13 on the cooling chamber 7 side is located below the inner wall 3 b. In the present embodiment, the preliminary chamber 5 is a space above the opening 13a of the small flue 13. The opening 13a opens into the cooling chamber 7. That is, the upper end portion of the opening 13a of the small flue 13 is a boundary between the preliminary chamber 5 and the cooling chamber 7.
The inner diameter of the cooling chamber 7 is larger than that of the preliminary chamber 5. In other words, the inner diameter of the wall portion 3a surrounding the cooling chamber 7 is larger than the inner diameter of the inner wall portion 3 b. An inner peripheral surface of the wall portion 3a is provided with an inclined surface 3c whose inner diameter increases from a lower end of the inner wall portion 3b toward a lower side. An opening 13a of the small flue 13 is formed in the inclined surface 3 c. Therefore, the opening 13a of the small flue 13 is inclined with respect to the vertical direction. Further, a projection projecting inward in the radial direction of the cooling tower 3 may be provided on the inner peripheral surface of the inner wall portion 3 b.
As shown in fig. 2, an annular bottom portion 11a of the annular flue 11 is formed in the wall portion 3 a. The annular bottom 11a extends annularly, and the upper opening 13b of the small flue 13 opens into the annular bottom 11 a. The annular bottom portion 11a is provided with a plurality of air supply ports 15. The air supply port 15 is located between the adjacent upper openings 13 b. As shown in fig. 1, the plurality of air supply ports 15 are connected to branch pipes 17, respectively. The plurality of branch pipes 17 are connected to a fan 21 via a 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 adjustment valve 23 that adjusts the flow rate of the combustion air. The main pipe 19 is provided with a control valve 25.
The coke dry fire extinguishing facility 1 is provided with a gravity-settling dust collector 31. The dust collector 31 has a dust-collecting wall portion 31a connected to the cooling tower 3. A flue 33 is formed in the dust removing wall portion 31 a. The dust removing wall portion 31a is formed integrally with the wall portion 3a of the cooling tower 3. The dust removing wall portion 31a extends from the wall portion 3a in the radial direction of the cooling tower 3. That is, a communication port 3d for opening the annular flue 11 to the outside of the wall portion 3a is formed in a part of the wall portion 3a in the circumferential direction around the annular flue 11. The dust removal wall portion 31a extends from the outer peripheral surface of the wall portion 3a in the radial direction of the cooling tower 3 so as to cover the periphery of the communication port 3 d. Thereby, the flue passage 33 formed in the dust removing wall portion 31a communicates with the annular flue passage 11 via the communication port 3 d.
The dust removing wall 31a includes a tapered portion 31b that is inclined downward as it moves away from the cooling tower 3. Therefore, the cross-sectional area of the flue duct 33 becomes larger as it is farther from the cooling tower 3. Further, a dust removing wall 31a constituting the bottom surface of the flue duct 33 is formed with a discharge port 31 c. The downstream end of the tapered portion 31b is connected to the outlet 31 c. The circulating gas discharged from the cooling tower 3 to the flue 33 contains dust, which will be described in detail below. The dust in the circulation gas is separated from the circulation gas by gravity while flowing through the flue 33, and then discharged from the desorption port 31c to the outside of the system.
The coke dry quenching facility 1 includes a boiler 41. The boiler 41 is provided at the rear stage of the dust separator 31. The boiler 41 recovers sensible heat of the coke from the circulating gas after passing through the dust separator 31. The boiler 41 includes a boiler wall 41a continuous with the dust removing wall 31 a. Here, boiler wall 41a and dust removal wall 31a are formed integrally. A flue pipe 43, which is a part of a boiler pipe for generating steam, is provided in the boiler wall 41 a. The flue tubes 43 are arranged in parallel with a gap so that the circulating gas can pass through them. A heat exchange pipe 45 through which a heat medium flows is provided in the boiler wall 41 a. The heat medium flowing through the heat exchange pipe 45 exchanges heat with the circulating gas flowing through the boiler wall 41a, thereby recovering sensible heat of the coke.
The boiler 41 is connected to a circulation line 47. The circulation line 47 is connected to a portion of the boiler wall 41a on the downstream side in the circulation direction of the circulation gas with respect to the heat exchange pipe 45. The circulation line 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 7a of the cooling tower 3. The circulating gas having passed through the boiler 41 is blown into the cooling tower 3 by the circulating blower 51.
According to the coke dry fire extinguishing apparatus 1, coke (red hot coke) is charged into the cooling tower 3 through the charging port 5 a. In the cooling tower 3, coke is filled in the preliminary chamber 5 and the cooling chamber 7. The circulating gas is supplied into the cooling tower 3 by the circulating blower 51 through the gas supply port 7a and the gas distribution mechanism 9. The circulating gas cools the coke during its ascent in the cooling chamber 7. The coke cooled by the circulating gas is carried out from the lower part of the cooling chamber 7. The coke is newly charged into the cooling tower 3 from the charging port 5a in accordance with the amount of the coke carried out from the cooling chamber 7.
The circulating gas after cooling 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 portion 11a of the annular flue 11. The combustion air is mixed with the high-temperature circulating gas immediately after passing through the small flue 13. The combustion air combusts combustible gases (hydrogen and carbon monoxide) contained in the mixed gas. The circulating gas is guided from the annular flue 11 to the dust collector 31. During the circulation of the circulating gas through the flue 33, the dust is separated by gravitational settling. The dust separated from the recycle gas is discharged from the purge port 31c to the outside of the system.
The circulating gas from which the dust is separated is guided to the boiler 41. The circulating gas recovers sensible heat of the coke by heat exchange in the flue pipe 43 and the heat exchange pipe 45. The circulation gas cooled by the heat recovery is sucked in by the circulation blower 51 through the circulation line 47. The circulation gas sucked into the circulation blower 51 can be supplied into the cooling tower 3 again from the gas supply port 7 a.
Here, the small flue 13 is provided with a partition member 100. The coke dry fire extinguishing apparatus 1 of the present embodiment is configured by a multi-stage flue type in which a small flue 13 is divided into a plurality of flues (passages) by a partition member 100. 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. Fig. 4 is a sectional view taken along line IV-IV of fig. 3. Fig. 5 is a top view of the partition member 100 in four directions. The partition member 100 includes a flat plate-shaped main body 102. Hereinafter, the x direction shown in fig. 3 is referred to as the width direction of the body 102, and the y direction shown in fig. 3 is referred to as the longitudinal direction of the body 102. As shown in fig. 4, the main body 102 is formed by laminating a refractory material on a metal (e.g., stainless steel) plate 104.
Specifically, the plate member 104 includes a flat plate-shaped planar portion 104a and a pair of side surface portions 104 b. The side surface portions 104b are provided at both ends of the planar portion 104a in the width direction. The side surface portion 104b has a cross-sectional shape in which both ends of the flat plate shape are bent approximately 90 degrees. The pair of side surface portions 104b face each other in the width direction of the body 102. The planar portion 104a and the side portion 104b extend in the longitudinal direction by the same length. In the present embodiment, the flat surface portion 104a and the side surface portion 104b are formed of different 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 side surface portions 104b protrude from the front and back surfaces of the planar portion 104a at an angle of substantially 90 degrees. On the surface side of the planar portion 104a and in the portion surrounded by the planar portion 104a and the side portion 104b, a refractory layer 106 (shown by cross hatching in fig. 4) made of a refractory is provided. In other words, the body 102 is formed by laminating a refractory material on the plate 104. Here, the refractory layer 106 is made of an unfixed-shape refractory (castable refractory, refractory concrete) formed by mixing a binder with aggregate obtained by crushing the refractory.
The plate 104 is provided with a plurality of reinforcing members 108. The reinforcing member 108 is formed of a bar member such as a castable anchor, an anchor bolt, or the like. 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 104. However, the reinforcing member 108 may be fastened to the plate member 104 or may be fitted to the plate member 104. The plurality of reinforcing members 108 are disposed so as to be spaced apart from each other in the width direction of the body 102. The plurality of reinforcing members 108 are disposed so as to be spaced apart from each other in the longitudinal direction of the body 102. That is, the plurality of reinforcing members 108 are arranged in a lattice shape or a zigzag shape in the main body 102. The V-shaped portion of the reinforcing member 108 is embedded in the refractory layer 106. In other words, the V-shaped portion of the reinforcing member 108 is covered with a refractory having an irregular shape. Thus, the reinforcing member 108 is disposed within the refractory layer 106.
A refractory layer 110 is provided on the opposite side of the refractory layer 106 with the flat surface portion 104a as a boundary, that is, on the back side of the plate material 104. Here, the refractory layer 110 is made of a refractory (refractory brick or refractory heat-insulating brick) having a fixed shape. In this way, the main body 102 of the partition member 100 is laminated with the refractory layer 106 on the front side of the plate material 104 and the refractory layer 110 on the back side of the plate material 104. In other words, the plate material 104 of the body portion 102 is coated with the refractory layers 106, 110.
Here, the refractory layer 106 is made of a refractory having an unfixed shape, and the refractory layer 110 is made of a refractory having a fixed shape. That is, the refractory provided in the main body 102 includes a refractory having an irregular shape. However, for example, both the refractory layers 106 and 110 may be made of an unfixed refractory material or a fixed refractory material. Further, the refractory layer 106 may be made of a refractory having a fixed shape, and the refractory layer 110 may be made of a refractory having an unfixed shape. Only one of the refractory layers 106 and 110 may be provided.
As shown in fig. 3 and 5, the partition member 100 includes a pair of locking portions 120 provided on both side surfaces in the width direction of the body portion 102. The pair of locking portions 120 are spaced apart from each other in the width direction of the main body portion 102. The locking portion 120 is provided at one end (upper end) of the body portion 102 in the longitudinal direction, and protrudes from the back surface side of the body portion 102. In a state where the partition member 100 is attached to the small flue duct 13, the bottom portion 120a of the locking portion 120 that protrudes further to the back side than the body portion 102 extends in the horizontal direction (the radial direction of the cooling tower 3). The locking portion 120 includes a fitting portion 122 projecting in the vertical direction from the bottom portion 120 a. The fitting portion 122 is continuous with the side of the bottom portion 120a away from the body portion 102.
The locking portion 120 may be made of a refractory material having an unfixed shape, or may be made of a refractory material having a fixed shape. For example, the locking portion 120 (fitting portion 122) may be formed by extending the refractory layer 106 of the body portion 102. The refractory layer 110 of the body 102 may be extended to form the locking portion 120 (fitting portion 122). The plate member 104 of the body 102 may protrude in the width direction, and the protruding portion of the plate member 104 may be covered with a refractory material to form the locking portion 120.
As shown in fig. 5, the partition member 100 includes a leg portion 130 on the back surface side of the main body portion 102. The leg portion 130 protrudes substantially at right angles to the rear surface of the main body portion 102. The leg portion 130 is located near the center in the width direction and the longitudinal direction of the body portion 102. The length of the leg portion 130 in the width direction is shorter than the length of the body portion 102 in the width direction. The length of the leg portion 130 in the longitudinal direction is shorter than the length of the body portion 102 in the longitudinal direction. The leg portion 130 is provided vertically above the lower end of the body portion 102 in the longitudinal direction. Here, the leg portion 130 is made of a refractory having the same shape as the refractory layer 110 provided on the back surface side of the body portion 102. However, the material of the leg portion 130 is not particularly limited, and may be formed of any of metal, refractory, and a combination thereof.
Fig. 6 is a view illustrating an installation state of the partition member 100. Fig. 7 is a sectional view taken along line VII-VII of fig. 6. Fig. 8 shows a state where the partition member 100 is removed from fig. 7. As described above, the plurality of small flues 13 are provided so as to be spaced apart from each other in the circumferential direction of the wall portion 3 a. Hereinafter, a portion of the wall portion 3a surrounding the small flue 13, which portion faces the inner wall portion 3b in the radial direction of the cooling tower 3, will be described as an outer wall portion 3 e. 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 13 d. The lower passage 13c extends obliquely upward from the opening 13 a. The upper passage 13d is continuous with the upper portion of the lower passage 13c and extends in the vertical direction. The upper passage 13d includes an upper opening 13b (see fig. 2) that opens to the annular bottom portion 11a of the annular flue 11.
A support wall 3g is provided on the wall 3a (connecting wall 3f) surrounding the small flue 13. In fig. 6, the support wall portion 3g is illustrated in black for easy understanding. As shown in fig. 8, the support wall portion 3g is provided on a circumferentially opposed facing surface of the wall portion 3 a. That is, two support wall portions 3g are arranged in the small flue 13 so as to face each other with a space therebetween in the circumferential direction. The support wall 3g protrudes from the wall 3a into the small flue 13. The support wall 3g has a horizontal portion 3g 1And an inclined part 3g2. As shown in fig. 6, the horizontal portion 3g1Is positioned vertically above the opening 13a of the small flue 13. Horizontal part 3g1Located in the upper passage 13 d. Horizontal part 3g1Extending in a horizontal direction. Inclined part 3g2From the horizontal part 3g1Extends downward and is positioned in the lower passage 13 c. Inclined part 3g2The lower end side is inclined in a direction radially inward of the upper end side.
The partition member 100 is placed on the support wall portion 3 g. Specifically, the bottom 120a of the partition member 100 is placed on the horizontal portion 3g1The above. Both side surfaces in the width direction of the main body 102 are placed on the inclined portions 3g2The above. As described above, the side surface portions 104b (see fig. 4) made of a metal plate material are provided on both side surfaces in the width direction of the main body portion 102. The side part 104b is mounted on the inclined part 3g2。
The fitting portion 122 is larger than the horizontal portion 3g1Further protrudes downward in the vertical direction. The horizontal part 3g is held between the back surface of the body part 102 and the fitting part 1221. This prevents the partition member 100 from falling off. Thus, the partition member 100 is held by the support wall portion 3g in the small flue 13. In a state where the partition member 100 is held in the small flue 13, the front end portion of the leg portion 130 in the protruding direction is in contact with the wall portion 3 a. However, in a state where the partition member 100 is held in the small flue 13, a minute gap may be formed between the wall portion 3a and the distal end portion of the leg portion 130 in the protruding direction.
The lower passage 13c of the small flue 13 is divided into two flues by the partition member 100. That is, the lower passage 13c of the small flue 13 is partitioned into the upper flue 13c1And a lower flue 13c2. Lower flue 13c2Located in the upper flue 13c1Further vertically downward (toward the wall 3a of the cooling tower 3 (radially outward of the cooling tower 3)). Here, the lower flue duct 13c2 is the lowermost flue duct located at the lowest position in the vertical direction among the plurality of flue ducts. The surface of the main body portion 102 of the partition member 100 faces the upper stage flue 13c1With the back surface facing the lower flue 13c2. Therefore, the main body 102 of the partition member 100 is positioned in the upper flue 13c of the plate 1041The side surface is provided with a refractory layer 106 (a refractory material having an irregular shape). The main body 102 of the partition member 100 is located in the lower flue 13c of the plate 1042The side surface is provided with a refractory layer 110 (a refractory having a fixed shape). The leg 130 of the partition member 100 is provided in the lower flue 13c2. The leg 130 faces the lower flue 13c from the main body 1022Extends towards the wall portion 3 a.
As shown in fig. 6, coke enters the small flue 13 through the opening 13 a. The invaded coke invaded into the small flue 13 is in contact with the partition member 100. That is, the partition member 100 is in contact with the invaded coke and in contact with the coke breeze in a state of being exposed to the high-temperature ambient gas. Therefore, the partition member 100 is easily worn by the coke. The partition member 100 of the present embodiment has a main body 102 in which a refractory is laminated on a metal plate 104, and therefore has high heat resistance and wear resistance. Therefore, the number of years of service of the partition member 100 becomes long, and the frequency of maintenance can be reduced. The temperature and flow rate of the passing gas and the coke breeze in the gas vary depending on the operating conditions such as the charged coke temperature. Therefore, the material of the partition member 100 can be determined for each machine.
The coke load is fed from the upper flue 13c1The side acts on the body portion 102 of the partition member 100. Main body 102 integrates plate 104 with refractory layer 106 using reinforcing member 108. Therefore, the partition member 100 can sufficiently withstand the load of the coke. Due to the fact that the flue 13c is arranged from the upper section1The load of coke acting laterally presses the body 102 radially outward of the cooling tower 3. A leg portion 130 is provided on the back surface side of the main body portion 102. Therefore, the load of the coke acts on the wall portion 3a via the leg portion 130. The body 102 is supported at both ends in the width direction by the support wall portions 3 g. Therefore, the load of the coke is received by the wall portion 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 portion 3g, the replacement work is easy, and the operation rate of the coke dry fire extinguishing apparatus 1 can be improved.
Further, in the operation of the coke dry fire extinguishing apparatus 1, the intrusion and the expulsion of the coke with respect to the small flue 13 are continuous. At this time, the amount of coke entering the small flue 13 and the amount of coke coming out of the small flue 13 may be out of balance. Further, if the amount of the coke entering is greatly larger than the amount of the coke to be removed, the usual operation cannot be performed. Therefore, the amount of coke in the small flue 13 needs to be constantly monitored.
However, if the partition member 100 is provided, the visibility of the small flue 13 may be reduced, and the monitoring of the amount of coke in the small flue 13 may be difficult. If the coke is left without noticing that the amount of coke entering exceeds the limit, the amount of coke entering increases arbitrarily, and the coke enters an irreversible state. Therefore, a method of constantly monitoring the amount of coke entering the small flue 13 to know the amount of coke entering becomes important.
The coke dry quenching equipment 1 of the present embodiment includes a pressure detection unit 200 for estimating the amount of coke in the small flue 13. The pressure detector 200 includes a lower detector 200a, an upper detector 200b, and a differential pressure derivation unit 200 c. The lower detection unit 200a includes a downward-facing flue 13c 2And a pipe having an opening and the other end connected to the differential pressure deriving part 200 c. The lower detection part 200a detects the lower flue 13c2The pressure of (a). The upper detection unit 200b includes a pipe having one end opening to the upper passage 13d and the other end connected to the differential pressure derivation unit 200 c. The upper detection unit 200b detects a pressure in the small flue 13 that is strictly above the upper end of the partition member 100 in the vertical direction (here, the upper passage 13d) than the lower detection unit 200 a. 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 200 b.
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 at intervals in the circumferential direction of the cooling tower 3. The pressure detection units 200 are arranged with a phase shift of 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 duct 33 of the dust catcher 31 in the cooling tower 3.
As shown in fig. 6, during normal operation of the coke dry fire extinguishing apparatus 1, the lower detection unit 200a detects the lower flue 13c2At a pressure above the location where the coke can intrude. Therefore, if the amount of coke entering 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 after the amount of coke entering increases. When the amount of coke entering the small flue 13 and the amount of coke coming out of the small flue 13 are out of balance, the upper flue 13c is as shown in FIG. 91The amount of coke invaded inside increases. In this case, the upper flue 13c1The coke intruded into the lower flue 13c from above passing over the partition member 1002. As a result, the lower flue 13c2The amount of coke intrusion increases. At this time, in the lower flue 13c2When coke enters the lower detection unit 200a and blocks the lower detection unit 200a, the pressure detected by the lower detection unit 200a increases.
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 becomes large. Thus, the lower flue 13c2The differential pressure with the upper passage 13d has a correlation (proportional relationship) with the amount of coke in the small flue 13. Therefore, the lower flue 13c can be used2The amount of coke entering the small flue 13 is estimated from the differential pressure between the upper passage 13d and the lower passage.
The coke dry quenching facility 1 includes a control unit 202 and a notification unit 204. The control unit 202 performs a determination process of determining whether or not the differential pressure derived by the differential pressure deriving unit 200c is equal to or greater than a predetermined threshold value. The notification unit 204 is constituted by a speaker, a display unit, and the like that output an alarm. When the control unit 202 determines that the differential pressure is equal to or greater than the threshold value through the determination process, an alarm is output from the reporting unit 204.
Fig. 10 is a flowchart illustrating an example of the control process of the coke dry fire extinguishing apparatus 1. The control unit 202 repeats the processing shown in fig. 10 at predetermined time intervals. The control unit 202 acquires the differential pressure from the pressure detection unit 200 (differential pressure derivation unit 200c) (S1). The control unit 202 performs a determination process of determining whether or not the acquired differential pressure is equal to or greater than a predetermined threshold value (S2). When it is determined that the differential pressure is equal to or greater than the threshold value (yes at S3), controller 202 outputs an alarm from reporting unit 204 and starts a predetermined report (S4). On the other hand, when it is determined that the differential pressure is not equal to or greater than the threshold value (no in S3), control unit 202 determines whether or not all pressure detecting units 200 have ended the determination process (S5). Then, when all the pressure detection units 200 end the determination process (yes at S5), the process ends. When all the pressure detection units 200 have not finished the determination processing (no in S5), the above-described processing is repeated for the pressure detection units 200 that have not performed the determination processing.
As described above, according to the coke dry fire extinguishing apparatus 1 of the present embodiment, the lower flue 13c is used as the lower flue2The amount of coke entering the small flue 13 is determined by the differential pressure between the upper passage 13d and the lower passage. Therefore, the amount of coke entering the small flue 13 can be monitored with high accuracy and ease.
Fig. 11 is a diagram illustrating a coke dry fire extinguishing apparatus 1A according to a first modification. The coke dry fire extinguishing apparatus 1A of the first modification differs from the above-described embodiment in that two partition members 100 are provided in the small flue 13. Therefore, the description of the same configuration as that of the above embodiment is omitted here, and only the point different from the above embodiment will be described. The coke dry fire extinguishing apparatus 1A has two support wall parts 3g in the small flue 13. The two support wall portions 3g are provided at a distance from each other in the vertical direction. The partition member 100 is placed on each of the two support wall portions 3 g. The two partition members 100 are disposed in the small flue 13 so as to be separated from each other in the vertical direction.
The lower passage 13c of the small flue 13 is divided into an upper flue 13c by two dividing members 1001And a lower flue 13c2And a middle flue 13c3These three flues (passages). Upper flue 13c1Is positioned in the lower flue 13c2And a middle flue 13c3More near the vertical directionAnd (4) preparing. Lower flue 13c2And the three flues are positioned at the lowest part in the vertical direction. That is, in the coke dry fire extinguishing apparatus 1A, the lower flue 13c2The lowermost flue duct located at the lowest position in the vertical direction among the plurality of flue ducts.
A surface of the leg portion 130 of the partition member 100 provided vertically upward on the distal end side in the protruding direction is in contact with a surface of the body portion 102 of the partition member 100 provided vertically downward. Thus, the wall portion 3a receives the load of the coke intrusion acting on the partition member 100 relatively vertically upward via the partition member 100 relatively vertically downward. Further, the middle flue 13c3And the upper flue 13c1At least a part of the leg 130 of the divided partition member 100 is disposed in the upper flue 13c1In the range of the height of the invaded coke (1). And, the middle flue 13c3And a lower flue 13c2At least a part of the leg 130 of the divided partition member 100 is disposed in the middle flue 13c3In the range of the height of the invaded coke (1). This makes it easy for the load of the coke entering the wall 3a of the cooling tower 3 to act thereon. However, the arrangement and shape of the leg 130 are not limited to this.
In the coke dry quenching equipment 1A, the lower detection unit 200a detects the lower flue 13c positioned at the lowest position in the vertical direction among the plurality of flue, as in the above-described embodiment 2(lowermost stack).
As described above, according to the coke dry fire extinguishing apparatus 1A of the first modification, the lower passage 13c is divided into three flues. This can further improve the ventilation performance.
Fig. 12 is a diagram illustrating a partition member 100A according to a second modification. As shown in fig. 12, a partition member 100A according to a second modification differs from the above-described embodiment in that a refractory layer 110 is not provided on the back surface side of a plate material 104. That is, the rear surface side of the planar portion 104a of the partition member 100A is exposed. In other words, the partition member 100A is provided with the plate member 104 on the most rear side (the side facing the flue duct relatively positioned vertically downward) of the body portion 102.
The load of the coke entering the main body 102. Therefore, bending stress acts on the body 102 in a direction in which the center side in the width direction protrudes toward the rear side. The partition member 100A is provided with a plate material 104 on the back side where the bending stress is relatively large. Here, the back side of the plate 104 (i.e., the lower flue 13 c)2Side (see fig. 6)) and the surface side of the plate 104 (i.e., the upper flue 13 c)1Side (see fig. 6)) is lower in temperature. Therefore, the refractory layer 110 of the above embodiment is not provided on the back surface side of the plate material 104 of the second modification. Thus, the partition member 100A of the second modification can be made lighter than the partition member 100 of the above embodiment. Here, on the surface side of the plate material 104, a refractory layer 106 made of a refractory material having an irregular shape is provided. However, the present invention is not limited to this, and a refractory layer 110 made of a refractory having a fixed shape may be provided on the surface side of the plate material 104.
Fig. 13 is a diagram illustrating a partition member 100B according to a third modification. As shown in fig. 13, the partition member 100B of the third modification is provided with a refractory layer 106 on both the front and back sides of a plate material 104. Further, reinforcing members 108 are provided on both the front and back surfaces of the plate member 104. Therefore, the reinforcing member 108 is provided on the refractory layer 106 provided on both the front surface side and the back surface side of the plate 104. The partition member 100B is bent such that the center side in the width direction of the body portion 102 (the plate material 104 and the refractory layer 106) protrudes to the front side more than both end sides.
Here, on both the front side and the back side of the plate material 104, a refractory layer 106 made of a refractory material having an irregular shape is provided. However, the present invention is not limited to this, and a refractory layer 110 made of a refractory having a fixed shape may be provided on one or both of the front surface side and the back surface side of the plate material 104. The body portion 102 (the plate material 104 and the refractory layer 106) is bent such that the center side in the width direction protrudes to the back side than both end sides.
Fig. 14 is a diagram illustrating a partition member 100C according to a fourth modification. As shown in fig. 14, a partition member 100C of the fourth modification is provided with a refractory layer 106 on the surface side of a plate material 104. The partition member 100C is bent such that the center side in the width direction of the body portion 102 (the plate material 104 and the refractory layer 106) protrudes to the front side more than both end sides. Here, on the surface side of the plate material 104, a refractory layer 106 made of a refractory material having an irregular shape is provided. However, the present invention is not limited to this, and a refractory layer 110 made of a refractory having a fixed shape may be provided on the surface side of the plate material 104. Further, the body portion 102 (the plate material 104 and the refractory layer 106) may be bent so that the center side in the width direction protrudes to the back side than both end sides.
The partition members 100A, 100B, and 100C according to the second to fourth modifications described above can be applied to both the coke dry fire extinguishing apparatus 1 according to the embodiment and the coke dry fire extinguishing apparatus 1A according to the first modification.
In the above-described 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 derivation unit 200 c. However, the pressure detection unit 200 may be provided with only the lower detection unit 200a, for example. In this case, the amount of coke entering may be estimated from the pressure detected by the lower detection unit 200 a. In any case, the pressure detection unit 200 detects at least the lower flue 13c2The pressure of (3) is sufficient.
In the above-described embodiment and the first modification, the case where the upper detection portion 200b detects the pressure above the upper end of the partition member 100 in the vertical direction, that is, the pressure of the upper passage 13d, has been described. However, when the upper detection unit 200b is located above the lower detection unit 200a, the upper flue 13c may be detected, for example1Can also detect the pressure of the lower flue 13c2The pressure of (a).
In the above-described embodiment and the first modification, the pressure detection unit 200 is provided in the plurality of different small flues 13, but only one pressure detection unit 200 may be provided. The pressure detection unit 200 may be provided at any position in the circumferential direction of the cooling tower 3.
In the above-described embodiment and the first modification, when the differential pressure is equal to or greater than the threshold value, the control unit 202 outputs an alarm from the notification unit 204 (predetermined notification). However, the control unit 202 may change the operation conditions such as stopping the operation of the coke dry fire extinguishing apparatus 1 instead of or in addition to the output of the alarm.
In the above-described embodiment and the first modification, the control unit 202 may output an alarm when the differential pressure is equal to or greater than a threshold value in any of the plurality of pressure detection units 200. However, an alarm may be output when the differential pressure is equal to or greater than the threshold value in two or more pressure detection units 200. Thus, false alarm can be prevented.
Further, in the above embodiment, the lower passage 13c is divided into two flues, and in the above first modification, the lower passage 13c is divided into three flues, but the lower passage 13c may be divided into four or more flues.
While the embodiments have been described above with reference to the drawings, it is needless to say that the present disclosure is not limited to such embodiments. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the invention as defined in the claims.
Industrial applicability
The present disclosure can be used in coke dry fire suppression equipment.
Description of the symbols
1-Coke dry fire extinguishing facility, 3-Cooling Tower, 3 a-wall, 7-Cooling Chamber, 7 a-gas supply opening (gas supply section), 13-Small flue, 13c1Upper flue duct, 13c2Lower flue, 100 partition member, 200 pressure detector, 200a lower detector, 200b upper detector, 200c differential pressure derivation, 202 control.
Claims (5)
1. A coke dry fire extinguishing apparatus is characterized by comprising:
a cooling tower having a cooling chamber surrounded by a wall portion;
a gas supply unit provided in the cooling tower and configured to supply gas into the cooling chamber;
a small flue formed in the wall of the cooling tower above the gas supply portion in the vertical direction and opening into the cooling chamber;
a partition member provided in the small flue and dividing the small flue into a plurality of flues in a vertical direction; and
and a pressure detection unit that detects at least a pressure of a lowermost flue duct among the plurality of flue ducts, the lowermost flue duct being positioned at the lowest position in the vertical direction.
2. The coke dry quenching apparatus according to claim 1,
The pressure detection unit includes:
a lower detection unit that detects a pressure of the lowermost flue;
an upper detection unit that detects a pressure above the lower detection unit in the vertical direction; and
and a differential pressure deriving unit that derives a differential pressure between the pressure detected by the lower detection unit and the pressure detected by the upper detection unit.
3. The coke dry quenching apparatus according to claim 2,
the upper detection unit detects a pressure vertically above an upper end of the partition member.
4. The coke dry quenching apparatus according to claim 2 or 3,
the differential pressure deriving unit derives a differential pressure, and the differential pressure deriving unit derives the differential pressure from the measured differential pressure.
5. The coke dry quenching apparatus as claimed in any one of claims 1 to 4,
the pressure detection unit is provided in a plurality of different small flues.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018096026 | 2018-05-18 | ||
| JP2018-096026 | 2018-05-18 | ||
| PCT/JP2019/019718 WO2019221282A1 (en) | 2018-05-18 | 2019-05-17 | Coke dry quenching facility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111989385A true CN111989385A (en) | 2020-11-24 |
Family
ID=68540403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980026179.9A Pending CN111989385A (en) | 2018-05-18 | 2019-05-17 | Coke dry fire extinguishing apparatus |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPWO2019221282A1 (en) |
| KR (1) | KR20200127237A (en) |
| CN (1) | CN111989385A (en) |
| TW (1) | TWI683001B (en) |
| WO (1) | WO2019221282A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230307789A1 (en) | 2020-09-29 | 2023-09-28 | Lg Energy Solution, Ltd. | Separator for lithium secondary battery, the method for manufacturing the same and lithium secondary battery including the same |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58138780A (en) * | 1982-02-10 | 1983-08-17 | Ishikawajima Harima Heavy Ind Co Ltd | Air flow rate controlling apparatus in coke dry quenching apparatus |
| JPS59105076A (en) * | 1982-12-07 | 1984-06-18 | Ishikawajima Harima Heavy Ind Co Ltd | Charging of red-hot coke into dry process coke quencher |
| JPH02167392A (en) * | 1988-09-01 | 1990-06-27 | Nippon Steel Corp | Flue from gas outlet of coke dry-type extinguisher |
| SU1624014A1 (en) * | 1989-01-09 | 1991-01-30 | Днепропетровский химико-технологический институт им.Ф.Э.Дзержинского | Pressure control device for coke dry quenching plant |
| CN101827915A (en) * | 2008-10-14 | 2010-09-08 | 新日铁工程技术株式会社 | Coke dry quenching facility |
| KR20120119803A (en) * | 2011-04-22 | 2012-10-31 | 주식회사 포스코 | Coke dry quenching plant and method for operating the same |
| CN204079879U (en) * | 2014-07-28 | 2015-01-07 | 辽宁以太工程技术开发有限公司 | Dryly put out annular air channel hydraulic push rod setting device |
| JP2016023230A (en) * | 2014-07-18 | 2016-02-08 | 新日鉄住金エンジニアリング株式会社 | Coke dry quenching equipment and gas outlet flue part structure thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6354032U (en) * | 1986-09-25 | 1988-04-11 | ||
| JP4137676B2 (en) | 2003-03-19 | 2008-08-20 | 新日鉄エンジニアリング株式会社 | Coke dry fire extinguishing equipment gas outlet flue structure |
| EP2351811B1 (en) * | 2008-10-14 | 2017-04-05 | Nippon Steel & Sumikin Engineering Co., Ltd. | Coke dry type extinguishing facility, and coke dry type extinguishing method |
| JP5202751B1 (en) * | 2012-09-13 | 2013-06-05 | 新日鉄住金エンジニアリング株式会社 | Coke dry fire extinguishing equipment |
| JP5562477B1 (en) * | 2013-08-01 | 2014-07-30 | 新日鉄住金エンジニアリング株式会社 | Coke dry fire extinguishing device and coke dry fire extinguishing method |
| JP6617870B2 (en) * | 2015-08-06 | 2019-12-11 | 株式会社Ihi | Coke dry fire extinguishing equipment |
-
2019
- 2019-05-17 WO PCT/JP2019/019718 patent/WO2019221282A1/en active Application Filing
- 2019-05-17 KR KR1020207028404A patent/KR20200127237A/en not_active Application Discontinuation
- 2019-05-17 CN CN201980026179.9A patent/CN111989385A/en active Pending
- 2019-05-17 TW TW108117146A patent/TWI683001B/en active
- 2019-05-17 JP JP2020519951A patent/JPWO2019221282A1/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58138780A (en) * | 1982-02-10 | 1983-08-17 | Ishikawajima Harima Heavy Ind Co Ltd | Air flow rate controlling apparatus in coke dry quenching apparatus |
| JPS59105076A (en) * | 1982-12-07 | 1984-06-18 | Ishikawajima Harima Heavy Ind Co Ltd | Charging of red-hot coke into dry process coke quencher |
| JPH02167392A (en) * | 1988-09-01 | 1990-06-27 | Nippon Steel Corp | Flue from gas outlet of coke dry-type extinguisher |
| SU1624014A1 (en) * | 1989-01-09 | 1991-01-30 | Днепропетровский химико-технологический институт им.Ф.Э.Дзержинского | Pressure control device for coke dry quenching plant |
| CN101827915A (en) * | 2008-10-14 | 2010-09-08 | 新日铁工程技术株式会社 | Coke dry quenching facility |
| KR20120119803A (en) * | 2011-04-22 | 2012-10-31 | 주식회사 포스코 | Coke dry quenching plant and method for operating the same |
| JP2016023230A (en) * | 2014-07-18 | 2016-02-08 | 新日鉄住金エンジニアリング株式会社 | Coke dry quenching equipment and gas outlet flue part structure thereof |
| CN204079879U (en) * | 2014-07-28 | 2015-01-07 | 辽宁以太工程技术开发有限公司 | Dryly put out annular air channel hydraulic push rod setting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2019221282A1 (en) | 2021-03-11 |
| KR20200127237A (en) | 2020-11-10 |
| TWI683001B (en) | 2020-01-21 |
| TW202003865A (en) | 2020-01-16 |
| WO2019221282A1 (en) | 2019-11-21 |
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