TW202003865A - Coke dry quenching device - Google Patents

Abstract

The purpose of present invention is to monitor the amount of coke in small smoke path easily. Provided is a coke dry quenching device has: a cooling tower 3 having a cooling chamber surrounded by a wall 3a; a gas supply unit provided in the cooling tower and supplying a gas into the cooling chamber; a small smoke path 13 formed vertically above the gas supply unit and opened to the cooling chamber among the wall portions of the cooling tower; a partition member 100 provided in the small smoke path and divide the small smoke path into the upper flow 13c1 and the lower flow 13c2 located radially outward of the cooling tower than the upper flow; and a pressure detection unit 200 that at least detects the pressure of the lower flow.

Description

Coke dry fire extinguishing equipment

The invention relates to a coke dry fire extinguishing device.

Conventionally, coke dry fire extinguishing equipment has been known. The coke dry fire extinguishing equipment will extinguish the coke extruded from the coke oven and cool it. The coke dry fire extinguishing equipment is equipped with a cooling tower. The cooling tower is formed inside with a preparatory chamber and a cooling chamber connected below the preparatory chamber. Coke (red hot coke) is loaded into the preparation chamber from the top of the cooling tower. Coke (red hot coke) is moved from the preparation chamber to the cooling chamber. In the cooling chamber, inert gas is supplied from below. Extinguish and cool coke by heat exchange with inactive gas.

In the cooling tower, a plurality of small flues opening to the cooling chamber are formed along the circumferential direction. The inactive gas system extinguishes and cools the coke and rises in the cooling chamber. The inert gas system is discharged from the small flue to the outside of the cooling chamber.

Patent documents 1 and 2 have disclosed a so-called two-stage flue-type coke dry-type fire extinguishing device provided with a partition member in a small flue. In these two-stage flue type coke dry-type fire extinguishing equipment, an upper stage flue and a lower stage flue are formed in the small flue by a partition member.

The coke will be pushed by the air flow and enter the small flue from the upper end of the opening of the cooling chamber. On the other hand, the coke intruding into the small flue is pulled back by the coke falling in the cooling chamber and returns to the cooling chamber. In this way, coke flow will occur in the small flue. When the small flue is divided into a two-stage flue type of a plurality of flues, compared to a single flue type without a partition member, the total amount of coke intruding into the small flue is reduced. Therefore, compared with the single flue type, the two-stage flue type can improve the ventilation capacity.

[Prior Technical Literature] [Patent Literature]

Patent Document 1: Japanese Patent No. 4137676

Patent Document 2: Japanese Patent Laid-Open No. 2016-23230

In the coke dry-type fire extinguishing equipment, intrusion and extraction of coke from a small flue are continuously performed. At this time, the balance between the amount of coke intruding into the small flue (hereinafter referred to as "intrusive coke") and the amount of coke extracted from the small flue (hereinafter referred to as "decoking coke") deteriorates, and the amount of intrusive coke greatly exceeds the amount of coke extracted Measurement, it becomes impossible to perform normal operation.

Therefore, in general coke dry fire extinguishing equipment, in order to be able to monitor the amount of coke in the small flue, it is configured that the small flue can be visually viewed from the inspection port on the top of the ring flue. However, in the two-stage flue type described above, the visual inspection of the small flue is obstructed 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, an object of the present invention is to provide a coke dry-type fire extinguishing device that can easily monitor the amount of coke in a small flue.

In order to solve the above problems, the coke dry fire extinguishing equipment according to one aspect of the present invention includes: a cooling tower having a cooling chamber surrounded by a wall portion; a gas supply portion provided in the cooling tower to supply gas into the cooling chamber; small The flue is formed in the wall portion of the cooling tower in the vertical direction above the gas supply portion and opens in the cooling chamber; the partition member is provided in the small flue and divides the small flue in the vertical direction into a plurality of A flue; and the pressure detecting section, which detects the pressure of the lowest flue located at the bottom of the vertical direction in at least the plurality of flues.

In addition, the pressure detection part may include: a lower detection part, which detects the pressure of the lowermost flue; an upper detection part, which detects the pressure more vertically above the lower detection part; and a differential pressure derivation part , Is the differential pressure between the pressure detected by the lower detection part and the pressure detected by the upper detection part.

The upper detection part can detect the pressure more vertically upward than the upper end of the partition member.

In addition, a control unit may be provided, which performs a predetermined report when the differential pressure derived by the differential pressure derivation unit becomes equal to or greater than a preset threshold value.

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

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

1. 1A, 1B ‧‧‧ coke dry fire extinguishing equipment

3‧‧‧cooling tower

3a‧‧‧Wall

3b‧‧‧Inner side wall

3c‧‧‧inclined surface

3d‧‧‧Connect port

3e‧‧‧Outside wall

3f‧‧‧Connect wall

3g‧‧‧support wall

3g ₁ ‧‧‧horizontal

3g ₂ ‧‧‧ Inclined part

5‧‧‧Preparation room

5a‧‧‧Inlet

7‧‧‧cooling room

7a‧‧‧Gas supply port (gas supply part)

9‧‧‧ gas distribution organization

11‧‧‧Circular flue

11a‧‧‧ring bottom

13‧‧‧Small flue

13a‧‧‧Opening

13b‧‧‧Upper opening

13c‧‧‧Lower access

13c ₁ ‧‧‧ Upper flue

13c ₂ ‧‧‧ Lower flue

13c ₃ ‧‧‧ middle flue

13d‧‧‧Upper access

15‧‧‧Air supply port

17‧‧‧Branch

19‧‧‧Main piping

21‧‧‧Fan

23‧‧‧Flow regulating valve

25‧‧‧Control valve

31‧‧‧Dust collector

31a‧‧‧Dust removal wall

31b‧‧‧inclined part

31c‧‧‧Exit

33‧‧‧ flue

41‧‧‧Boiler

41a‧‧‧Boiler wall

43‧‧‧ Smoke pipe

45‧‧‧Heat exchange piping

47‧‧‧Circulation catheter

51‧‧‧Circulation blower

100, 100A, 100B, 100C

102‧‧‧Body

104‧‧‧Plate

104a‧‧‧Plane Department

104b‧‧‧Side part

106‧‧‧Refractory layer (refractory, refractory with irregular shape)

108‧‧‧Reinforcement board

110‧‧‧Refractory layer (refractory, fixed shape refractory)

120‧‧‧locking part

120a‧‧‧Bottom

122‧‧‧fitting part

130‧‧‧foot

200‧‧‧Pressure Detection Department

200a‧‧‧Lower Detection Department

200b‧‧‧Upper Detection Department

200c‧‧‧Differential Pressure Derivation Department

202‧‧‧Control Department

204‧‧‧Notification Department

S1~S5‧‧‧Step

Figure 1 is a diagram illustrating coke dry fire extinguishing equipment.

Figure 2 is a sectional view taken along line II-II of Figure 1.

Fig. 3 is a perspective view of a partition member.

Figure 4 is a sectional view taken along line IV-IV of Figure 3.

Figure 5 is a plan view of the partition member in four directions.

FIG. 6 is a diagram illustrating the installation state of the partition member.

Figure 7 is a cross-sectional view taken along the line VII-VII of Figure 6.

Figure 8 shows the state with the partition member removed from Figure 7.

Fig. 9 is a diagram illustrating a state where the amount of intrusive coke increases.

Fig. 10 is a flowchart illustrating an example of control processing of coke dry fire extinguishing equipment.

FIG. 11 is a diagram illustrating a coke dry fire extinguishing device according to a first modification.

FIG. 12 is a diagram illustrating a partition member in a second modification.

Fig. 13 is a diagram illustrating a partition member of a third modification.

FIG. 14 is a diagram illustrating a partition member of a fourth modification.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in this embodiment are for illustrative purposes only, and are not intended to limit the present invention unless otherwise stated. In addition, in this specification and the drawings, elements having substantially the same function and configuration are attached with the same symbols to omit repetitive description, and elements not directly related to the present invention are omitted from illustration.

FIG. 1 is a diagram illustrating coke dry fire extinguishing equipment 1. Figure 2 is a sectional view taken along line II-II of Figure 1. As shown in FIG. 1, the coke dry-type fire extinguishing equipment 1 includes a cooling tower 3. The cooling tower 3 includes a wall portion 3a formed in a ring shape. The cooling tower 3 is provided with a preparatory chamber 5 and a cooling chamber 7 surrounded by a wall portion 3a. The preparatory chamber 5 is provided with an inlet 5a formed at the top of the wall 3a. The coke system is introduced into the cooling tower 3 from the inlet 5a. The cooling chamber 7 is connected to the space of the preparation chamber 5 and is provided below the preparation chamber 5. The bottom of the cooling chamber 7 is formed with a gas supply port 7a (gas supply portion) penetrating the wall portion 3a. A circulating gas system mainly composed of inert gas such as nitrogen is supplied into the cooling tower 3 from the gas supply port 7a. In addition, 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 portion 3a that surrounds the preparation chamber 5. The annular flue 11 is an annular hole extending in the circumferential direction of the wall portion 3a. In addition, the wall portion 3a is provided with a plurality of small flues 13 that open the opening portion 13a toward the cooling chamber 7. The small flue 13 is located vertically above the gas supply port 7a and the gas distribution mechanism 9 in the wall portion 3a. A plurality of small flue ducts 13 are divided and formed along the circumferential direction of the cooling tower 3. The small flue 13 communicates the annular flue 11 with the cooling chamber 7. In other words, the small flue 13 connects the passage between the cooling chamber 7 and the annular flue 11. The circulating gas system is discharged from the cooling chamber 7 to the annular flue 11 through the small flue 13.

In the present embodiment, the portion of the wall portion 3a that partitions the annular flue 11 and the pre-chamber 5 is the inner wall portion 3b. In other words, the radially inner side of the annular flue 11 in the wall portion 3a becomes the inner wall portion 3b. Therefore, the opening 13a of the small flue 13 on the cooling chamber 7 side is located below the inner wall portion 3b. In this embodiment, the preparation room 5 is a space above the opening 13a of the small flue 13. The opening 13a is opened in the cooling chamber 7. In other words, the upper end portion of the opening 13a of the small flue 13 becomes the boundary between the preparatory chamber 5 and the cooling chamber 7.

The inner diameter of the cooling chamber 7 is larger than the inner diameter of the preparation chamber 5. In other words, the inner diameter of the portion surrounding the cooling chamber 7 in the wall portion 3a is larger than the inner diameter of the inner side wall portion 3b. The inner peripheral surface of the wall portion 3a is provided with an inclined surface 3c whose inner diameter gradually increases downward from the lower end of the inner wall portion 3b. The inclined surface 3c is formed with an opening 13a of the small flue 13. Therefore, the opening 13a of the small flue 13 is inclined with respect to the vertical direction. In addition, the inner peripheral surface of the inner wall portion 3b may be provided with a protrusion protruding inward in the radial direction of the cooling tower 3.

As shown in FIG. 2, the wall portion 3 a is formed with an annular bottom 11 a of the annular flue 11. The ring-shaped bottom 11a extends in a ring shape, and the upper opening 13b of the small flue 13 opens toward the ring-shaped bottom 11a. The annular bottom 11a is provided with a plurality of air supply ports 15. The air supply port 15 is located between adjacent upper openings 13b. A plurality of air supply ports 15 are connected to branch pipes 17 as shown in FIG. 1. The plural branch pipes 17 are connected to the fan 21 via the main pipe 19. The main pipe 19 supplies the combustion air to the air supply port 15 via the branch pipe 17. In addition, the branch pipe 17 is provided with a flow rate adjustment valve 23 that adjusts the flow rate of combustion air. The main piping 19 is provided with a control valve 25.

The coke dry-type fire extinguishing equipment 1 is equipped with a gravity settling dust collector 31. The dust collector 31 has a dust removal wall portion 31a connected to the cooling tower 3. A flue 33 is formed in the dust removing wall portion 31a. The dust-removing wall portion 31a is integrally formed with the wall portion 3a of the cooling tower 3. The dust-removing wall portion 31 a extends from the wall portion 3 a in the radial direction of the cooling tower 3. That is, in the wall portion 3a, a communication port 3d is formed in the portion surrounding the annular flue 11 so as to cover a part of the circumferential direction and open the annular flue 11 toward the outside of the wall portion 3a. 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 3d. As a result, 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 31a includes an inclined portion 31b that slopes downward as it leaves the cooling tower 3. Therefore, the cross-sectional area of the flue 33 becomes larger as it leaves the cooling tower 3. In addition, the dust removal wall portion 31a constituting the bottom surface of the flue 33 is formed with an escape opening 31c. The downstream end of the inclined portion 31b is connected to the escape opening 31c. The circulating gas discharged from the cooling tower 3 to the flue 33 contains dust, and the details will be described later. During circulation through the flue 33, the dust in the circulating gas is separated from the circulating gas by gravity and discharged from the outlet 31c to the outside of the system.

The coke dry-type fire extinguishing equipment 1 includes a boiler 41. The boiler 41 is installed at the rear stage of the dust collector 31. The boiler 41 recovers the sensible heat of coke from the circulating gas passing through the dust collector 31. The boiler 41 includes a boiler wall portion 41a connected to the dust removal wall portion 31a. Here, the boiler wall portion 41a is integrally formed with the dust removal wall portion 31a. The boiler wall 41a is provided with a smoke tube 43 which is a part of the boiler tube that generates steam. The smoke pipes 43 are arranged in parallel with a gap in a manner that allows circulating gas to pass through. In the boiler wall portion 41a, a heat exchange pipe 45 in which a heat supply medium circulates is provided. The heat medium flowing inside the heat exchange pipe 45 exchanges heat with the circulating gas flowing in the boiler wall 41a, and recovers the sensible heat of the coke.

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

According to the above coke dry fire extinguishing equipment 1, coke (red hot coke) is charged into the cooling tower 3 from the inlet 5a. The coke system is filled in the preparatory chamber 5 and the cooling chamber 7 in the cooling tower 3. The circulating gas system 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 system cools the coke as it rises in the cooling chamber 7. The coke cooled by circulating gas is carried out from the lower part of the cooling chamber 7. Depending on the amount of coke transported from the cooling chamber 7, the coke is recharged into the cooling tower 3 from the inlet 5.

The circulating gas system after cooling the coke is discharged to the annular flue 11 through the small flue 13. At this time, combustion air is supplied from the 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 system burns combustible gases (hydrogen, carbon monoxide) contained in the mixed gas. The circulating gas system is introduced into the dust collector 31 from the annular flue 11. The circulating gas system separates the dust by gravity sedimentation during the circulation in the flue 33. The dust separated from the circulating gas is discharged out of the system from the outlet 31c.

The circulating gas system after the dust separation is introduced into the boiler 41. The circulating gas system recovers the sensible heat of the coke through the smoke pipe 43 and the heat exchange piping 45. The circulation gas system cooled by heat recovery is sucked into the circulation blower 51 through the circulation duct 47. The circulating gas system sucked in by the circulating blower 51 is again supplied into the cooling tower 3 from the gas supply port 7a.

Here, the partition member 100 is provided in the small flue 13. The coke dry-type fire extinguishing device 1 of this embodiment divides the small flue 13 into a plurality of flues (passages) by a partition member 100 to form a multi-stage flue type. 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 cross-sectional view taken along line IV-IV of FIG. 3. FIG. 5 is a plan view of the partition member 100 in four directions. The partition member 100 is provided with a body portion 102 having a flat plate shape. Hereinafter, the x direction shown in FIG. 3 is referred to as the width direction of the body portion 102, and the y direction shown in FIG. 3 is referred to as the longitudinal direction of the body portion 102. As shown in FIG. 4, the body portion 102 is formed by laminating a refractory on a metal plate 104 (eg, stainless steel). .

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

The plate material 104 is a cross-sectional shape in which the side surface portion 104b protrudes toward the front surface side and the back surface side of the flat surface portion 104a at an angle of approximately 90 degrees. On the surface side of the flat portion 104a, a refractory layer 106 made of a refractory is provided in the portion surrounded by the flat portion 104a and the side portion 104b (shown by cross-hatching in FIG. 4). In other words, the body portion 102 is formed by stacking refractory on the plate 104. Here, the refractory layer 106 is composed of a refractory of indefinite shape (castable refractory, refractory concrete), and the refractory of the indefinite shape is composed of a main material obtained by crushing the refractory.

The refractory layer 106 is provided with a plurality of reinforcing plates 108 extending in the direction of the surface of the plate 104. The reinforcing plate 108 is formed by bending a metal flat plate member into a V shape. The reinforcing plate 108 extends in the longitudinal direction of the main body 102. The plurality of reinforcing plates 108 are separated from each other in the width direction of the body portion 102 and buried in the refractory layer 106. In other words, the entire reinforcing plate 108 is covered with refractory of irregular shape.

The refractory layer 110 is provided on the opposite side of the refractory layer 106, that is, on the back side of the plate 104, with the plane portion 104a as a boundary. Here, the refractory layer 110 is composed of a refractory having a fixed shape (refractory brick or refractory insulating brick). In this manner, the body portion 102 of the partition member 100 is laminated with the refractory layer 106 on the front side of the plate 104 and the refractory layer 110 is laminated on the back side of the plate 104. In other words, the plate 104 of the body portion 102 is covered by the refractory layers 106, 110.

In addition, it is assumed here that the refractory layer 106 is composed of a refractory having an irregular shape, and the refractory layer 110 is composed of a refractory having a fixed shape. In other words, it is assumed that the refractory system provided in the body portion 102 includes refractory materials having an indefinite shape. However, for example, both of the refractory layers 106 and 110 may be composed of refractory of indefinite shape or refractory of fixed shape. In addition, the refractory layer 106 may be composed of a refractory with a fixed shape, and the refractory layer 110 may also be composed of a refractory with an irregular shape. 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 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 body portion 102. The locking portion 120 is provided at one end (upper end) in the longitudinal direction of the body portion 102 and protrudes from the back side of the body portion 102. The bottom portion 120a of the locking portion 120, which protrudes more than the main body portion 102 on the back side, extends in the horizontal direction (the radial direction of the cooling tower 3) with the partition member 100 attached to the small flue 13. The locking portion 120 includes a fitting portion 122 that protrudes in the vertical direction from the bottom 120a. The fitting portion 122 is connected to the side away from the body portion 102 in the bottom portion 120a.

In addition, the locking portion 120 may be composed of a refractory having an irregular shape or a refractory having a fixed shape. For example, the refractory layer 106 of the body portion 102 may be extended to form the locking portion 120 (fitting portion 122). In addition, the refractory layer 110 of the body portion 102 may be extended to form the locking portion 120 (fitting portion 122). In addition, the plate 104 of the main body 102 may protrude in the width direction, and the protruding portion of the plate 104 may be covered with a refractory to form the locking portion 120.

Furthermore, as shown in FIG. 5, the partition member 100 is provided with the leg portion 130 on the back side of the body portion 102. The leg portion 130 protrudes at a substantially right angle with respect to the back surface of the body portion 102. The leg portion 130 is located near the center of the body portion 102 in the width direction and the length direction. 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. In addition, 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 disposed vertically above the lower end of the main body portion 102 in the longitudinal direction. Here, the leg portion 130 is composed of a refractory material fixed in the same shape as the refractory material layer 110 provided on the back side of the main body portion 102. However, the material of the leg portion 130 is not particularly limited, and may be composed of any one of metal, refractory, and these combinations.

FIG. 6 is a diagram illustrating the installation state of the partition member 100. Figure 7 is a cross-sectional view taken along the line VII-VII of Figure 6. FIG. 8 shows the state after the partition member 100 is removed from FIG. 7. As described above, a plurality of small flue ducts 13 are provided at intervals from each other along the circumferential direction of the wall portion 3a. In the following, a portion surrounding the inner wall portion 3b in the radial direction of the cooling tower 3 in the wall portion 3a of the small flue 13 will be described as the outer wall portion 3e. The part connecting the inner side wall part 3b and the outer side wall part 3e will be described as the connecting wall part 3f (refer to 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 diagonally upward from the opening 13a. The upper side passage 13d continues above the lower side passage 13c and extends in the vertical direction. The upper side passage 13d is included in the upper opening 13b (refer to FIG. 2) opened in the annular bottom 11a of the annular flue 11 described above.

A supporting wall portion 3g is provided around the wall portion 3a (connection wall portion 3f) of the small flue 13. In FIG. 6, for easy understanding, the support wall portion 3g is shown in black. As shown in FIG. 8, the support wall portion 3g is provided on the opposite surface of the wall portion 3a that opposes in the circumferential direction. In other words, in the small flue 13, the two support wall portions 3g are arranged so as to be opposed to each other in the circumferential direction. The support wall portion 3g protrudes from the wall portion 3a into the small flue 13. The support wall portion 3g includes a horizontal portion 3g ₁ and an inclined portion 3g ₂ . As shown in FIG. 6, the horizontal portion 3g ₁ is the opening 13a of the smaller flue 13 and is located vertically upward. The horizontal portion 3g ₁ is located in the upper passage 13d. The horizontal portion 3g ₁ extends horizontally. The inclined portion 3g ₂ extends downward from the horizontal portion 3g ₁ and is located in the lower passage 13c. The inclined portion 3g ₂ is inclined toward the lower end side than the upper end side in the radial direction.

The partition wall 100 is placed on the support wall 3g. Specifically, the base member 100 of the partition lines 120a placed on the horizontal portion 3g _1. In addition, both side surfaces in the width direction of the main body portion 102 are placed on the inclined portion 3g ₂ . As described above, the both side surfaces in the width direction of the main body portion 102 are provided with side surface portions 104b (refer to FIG. 4) made of metal plate materials. The side portion 104b is placed on the inclined portion 3g ₂ .

The fitting portion 122 than the horizontal line portion 3g ₁ protruding toward the vertically downward. The horizontal portion 3g ₁ is sandwiched between the back surface of the body portion 102 and the fitting portion 122. This prevents the partition member 100 from falling off. In this way, the partition member 100 is held in the small flue 13 by the support wall portion 3g. In the 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 3a. However, in the state where the partition member 100 is held in the small flue 13, a slight gap may be formed between the front end portion of the leg 130 in the protruding direction and the wall 3a.

The small flue 13 divides the lower passage 13c into two flues by the partition member 100. That is, the lower passage 13c of the small flue 13 is divided into an upper flue 13c ₁ and a lower flue 13c ₂ . The lower-stage flue 13c ₂ is located vertically lower than the upper-stage flue 13c ₁ (the wall 3a side of the cooling tower 3 (the radial outside of the cooling tower 3)). Here, the lower-stage flue 13c ₂ becomes the lowermost-stage flue located at the bottom in the vertical direction among the plurality of flues. The surface of the body portion 102 of the partition member 100 faces the upper flue 13c ₁ , and the back faces the lower flue 13c ₂ . Therefore, the body portion 102 of the partition member 100 is provided with a refractory layer 106 (refractory of indefinite shape) on the upper flue 13c ₁ side surface of the plate 104. In addition, the body portion 102 of the partition member 100 is provided with a refractory layer 110 (refractory of a fixed shape) on the surface of the lower flue 13c ₂ side of the plate 104. The leg portion 130 of the partition member 100 is provided on the lower flue 13c ₂ . The leg portion 130 extends from the back surface of the body portion 102 facing the lower flue 13c ₂ toward the wall portion 3a.

As shown in FIG. 6, coke enters the small flue 13 through the opening 13a. The intrusive coke intruding into the small flue 13 is in contact with the partition member 100. In other words, the partition member 100 is in contact with the intruding coke while being exposed to a high-temperature atmosphere, and is hit by the powdery coke. Therefore, the partition member 100 is in a state of being easily worn out by coke. The partition member 100 of this embodiment has a body portion 102 in which a refractory is laminated on a metal plate 104, and therefore has high heat resistance and wear resistance. Therefore, the service life of the partition member 100 becomes longer, and the frequency of maintenance can be reduced. In addition, the temperature, flow rate of the passing gas, and the powdered coke system in the gas change depending on the operating conditions such as the temperature of the charged coke. Therefore, the material of the partition member 100 can be determined according to each mechanical device.

The load of coke acts on the body portion 102 of the partition member 100 from the upper flue 13c ₁ side. The body portion 102 integrates the plate 104 and the refractory layer 106 by the reinforcing plate 108. Therefore, the partition member 100 can sufficiently bear the load of coke. The body portion 102 is pushed outward in the radial direction of the cooling tower 3 due to the load of coke acting from the upper flue 13c ₁ side. Since the leg portion 130 is provided on the back side of the body portion 102, the load of coke acts on the wall portion 3a via the leg portion 130. In addition, both ends in the width direction of the body portion 102 are supported by the support wall portion 3g. Therefore, a load system that receives coke from the wall portion 3a increases the creep strength of the partition member 100.

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

The height of the coke intrusion in the lower flue 13c ₂ is lower than the height of the coke intrusion in the upper flue 13c ₁ . The leg portion 130 is provided above the height of the intrusion of coke in the lower flue 13c ₂ during normal operation. In other words, the leg portion 130 is provided above the lower end of the body portion 102, thereby avoiding contact with coke and having no adverse effect on the ventilation ability. On the other hand, a part or the whole of the leg portion 130 is set at a lower range than the height of the intrusive coke in the upper flue 13c ₁ of the body portion 102. In this way, the leg portion 130 extends from the vicinity of the center of the body portion 102 toward the lower end side. The leg portion 130 easily acts on the wall portion 3a of the cooling tower 3 from the upper flue 13c ₁ side which acts on the body 102 to invade coke. However, the configuration, shape, etc. of the leg portion 130 are not limited thereto.

In addition, during the operation of the coke dry-type fire extinguishing facility 1, the intrusion and extraction system of coke into the small flue 13 continues. At this time, the balance between the amount of coke entering the small flue 13 and the amount of coke extracted from the small flue 13 may deteriorate. In addition, when the amount of intruding coke greatly exceeds the amount of coke extraction, it becomes impossible to perform normal operation. 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 decreases, and the monitoring of the amount of coke in the small flue 13 may become difficult. If you do not notice that the amount of intrusive coke exceeds the limit and ignore it, the amount of intrusive coke will increase arbitrarily and eventually reach an unrecoverable state. Therefore, it is important to constantly monitor the amount of intruding coke in the small flue 13 to know the amount of intruding coke.

The coke dry-type 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 derivation unit 200c. The lower detection section 200a includes a pipe with one end opening in the lower flue 13c ₂ and the other end connected to the differential pressure outlet 200c. The lower detection unit 200a detects the pressure of the lower flue 13c ₂ . The upper detection unit 200b includes a pipe whose one end is opened in the upper passage 13d and whose other end is connected to the differential pressure derivation unit 200c. The upper detection part 200b detects the pressure in the small flue 13 more than the lower detection part 200a, more strictly, it detects the pressure above the upper end of the partition member 100 in the vertical direction (in this case, the upper passage 13d). The differential pressure derivation unit 200c derives the differential pressure between the pressure detected by the lower detection unit 200a and the pressure detected by the upper detection unit 200b.

In this 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 in the circumferential direction of the cooling tower 3 at intervals. These pressure detection units 200 are arranged at a position shifted by approximately 90 degrees in the circumferential direction except for a pressure detection unit 200 disposed in the cooling tower 3 near the communication port 3d that communicates with the flue 33 of the dust collector 31.

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

Fig. 9 is a diagram illustrating a state where the amount of intrusive coke increases. When the balance between the amount of coke intruding into the small flue 13 and the amount of coke escaping from the small flue 13 deteriorates, as shown in FIG. 9, the amount of invading coke in the upper flue 13c ₁ increases. At this time, coke intruding into the upper flue duct 13c ₁ passes over the partition member 100 and invades into the lower flue duct 13c ₂ from above. As a result, the amount of intruding coke in the lower flue 13c ₂ increases. At this time, when intruding coke in the lower stage flue 13c ₂ blocks the lower detection part 200a, the pressure detected by the lower detection part 200a becomes higher.

As a result, the difference between the pressure detected by the lower detection part 200a and the pressure detected by the upper detection part 200b becomes larger. In this way, the differential pressure system between the lower-stage flue 13c ₂ and the upper passage 13d has a correlation with the amount of coke in the small flue 13 (proportional relationship). Therefore, based on the differential pressure between the lower flue 13c ₂ and the upper passage 13d, the amount of coke intruding into the small flue 13 can be estimated.

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 to determine whether the differential pressure derived by the differential pressure deriving unit 200c is equal to or greater than a preset threshold value. The notification unit 204 is composed of a speaker that outputs an alarm, a display unit, and the like. 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 illustrating an example of the control process of the coke dry fire extinguishing device 1. The control unit 202 repeats the processing shown in FIG. 10 every predetermined time. The control unit 202 acquires the differential pressure from the pressure detection unit 200 (differential pressure derivation unit 200c) (step S1). The control unit 202 performs a determination process to determine whether the acquired differential pressure is equal to or greater than a preset threshold value (step S2). In addition, when it is determined that the differential pressure is equal to or greater than the threshold value (YES in step S3), the control unit 202 outputs an alarm from the notification unit 204 to start a predetermined notification (step 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 step S3), the control unit 202 determines whether all the pressure detection units 200 have ended the determination process (step S5). Furthermore, if all the pressure detection units 200 have ended the determination process (YES in step S5), the process is ended. In addition, if all the pressure detection units 200 have not finished the determination process (“No” in step S5 ), the above-described process is repeated for the pressure detection unit 200 that has not performed the determination process.

In summary, according to the coke dry fire extinguishing device 1 of the present embodiment, the amount of coke intruding into the small flue 13 can be specified by the differential pressure between the lower flue 13c ₂ and the upper side passage 13d. Therefore, the amount of intruding coke in the small flue 13 can be monitored with good accuracy and easily.

FIG. 11 is a diagram illustrating a coke dry fire extinguishing apparatus 1A according to a first modification. The difference between the coke dry fire extinguishing equipment 1A of the first modification and the above-described embodiment is that two partition members 100 are provided in the small flue 13. Therefore, here, the description of the same configuration as the above-mentioned embodiment will be omitted, and only the differences from the above-mentioned embodiment will be described. The coke dry type fire extinguishing equipment 1A is provided with two support wall portions 3g in the small flue 13. The two support wall portions 3g are spaced apart along the vertical direction. The two support wall portions 3g are each mounted with a partition member 100. The two partition members 100 are separated in the vertical direction and arranged in the small flue 13.

The lower passage 13c of the small flue 13 is divided into three flues (passages) of the upper flue 13c ₁ , the lower flue 13c ₂ and the middle flue 13c ₃ by two partition members 100. The upper flue 13c ₁ is located vertically above the lower flue 13c ₂ and the middle flue 13c ₃ . The lower flue 13c ₂ is located at the bottom of the three flues in the vertical direction. In other words, in the coke dry-type fire extinguishing apparatus 1A, the lower flue 13c ₂ becomes the lowermost flue located at the bottom in the vertical direction among the plurality of flues.

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

The leg portion 130 of the partition member 100 provided vertically upward has a surface on the front end side in the protruding direction in contact with the surface of the body portion 102 of the partition member 100 provided vertically downward. Thereby, the load of the intruding coke acting on the partition member 100 located relatively upward in the vertical direction is received by the wall portion 3a via the partition member 100 located relatively downward in the vertical direction. In addition, at least a portion of the foot 130 of the partition member 100 separating the middle flue 13c ₃ and the upper flue 13c ₁ is set at a lower range than the height of the intrusive coke in the upper flue 13c ₁ . In addition, at least a portion of the foot 130 of the partition member 100 separating the middle flue 13c ₃ and the lower flue 13c ₂ is set at a lower range than the height of the intrusive coke in the middle flue 13c ₃ . As a result, the load entering the coke easily acts on the wall portion 3a of the cooling tower 3. However, the configuration, shape, etc. of the leg portion 130 are not limited thereto.

In addition, in the coke dry-type fire extinguishing apparatus 1A, as in the above-described embodiment, the lower detection unit 200a detects the pressure of the lowermost flue 13c ₂ (lowest flue) at the bottom in the vertical direction among the plurality of flues.

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. In this way, the ventilation capacity 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 100A of the second modification is different from the above-described embodiment in that the refractory layer 110 is not provided on the back side of the plate 104. That is, the partition member 100A exposes the back side of the flat portion 104a. In other words, the partition member 100A is provided with the plate material 104 on the backmost side of the body portion 102 (facing the side of the flue relatively downward in the vertical direction).

The load intruding into the coke acts on the body 102. Therefore, the bending stress acts on the body portion 102 in a direction that protrudes from the center side in the width direction to the back side. The partition member 100A is provided with a plate 104 on the back side where the bending stress becomes relatively large. By providing the plate material 104 on the back side of the partition member 100A, the partition member 100A is easily deformed and durability can be improved. In addition, a refractory layer 106 made of a refractory material with an irregular shape is provided on the surface side of the plate 104. However, not limited to this, a refractory layer 110 composed of a refractory with a fixed shape may be provided on the surface side of the plate 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 the plate 104. In addition, the reinforcing plate 108 is provided in the refractory layer 106 provided on both the front side and the back side of the plate 104. In addition, the partition member 100B is bent so that the center side in the width direction of the body portion 102 (plate material 104 and refractory layer 106) protrudes toward the surface side more than the both end sides.

In addition, here, a refractory layer 106 composed of refractory materials having an irregular shape is provided on both the front side and the back side of the plate 104. However, not limited to this, a refractory layer 110 composed of a refractory having a fixed shape may be provided on either or both of the front side and the back side of the plate 104. In addition, the main body portion 102 (plate material 104 and refractory layer 106) is bent so that the center side in the width direction protrudes toward the back side more than 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 100C of the fourth modification is provided with a refractory layer 106 on the surface side of the plate 104. In addition, the partition member 100C is bent so that the center side in the width direction of the body portion 102 (the plate 104 and the refractory layer 106) protrudes toward the surface side more than the both end sides. In addition, a refractory layer 106 composed of refractory materials having an irregular shape is provided on the surface side of the plate 104 here. However, it is not limited to this, and a refractory layer 110 composed of a refractory having a fixed shape may be provided on the surface side of the plate 104. In addition, the main body portion 102 (plate material 104 and refractory layer 106) may be bent so that the center side in the width direction protrudes toward the back side more than the both end sides.

In addition, the partition members 100A, 100B, and 100C of the second to fourth modification examples described above can be applied to both the coke dry fire extinguishing equipment 1 of the embodiment and the coke dry fire extinguishing equipment 1A of the first modification.

In addition, in the above embodiment and the first modification, it is assumed that the pressure detection unit 200 includes a lower detection unit 200a, an upper detection unit 200b, and a differential pressure derivation unit 200c. However, the pressure detection unit 200 may include only the lower detection unit 200a, for example. At this time, the amount of intruding coke can be estimated by the pressure detected by the lower detection part 200a. In short, the pressure detection unit 200 may detect at least the pressure of the lower flue 13c ₂ .

In addition, the above embodiment and the first modification have described the case where the upper detection portion 200b detects the pressure in the vertical direction above the upper end of the partition member 100, that is, the pressure in the upper passage 13d. However, if the upper detection part 200b is located above the lower detection part 200a, for example, the pressure of the upper flue 13c ₁ may be detected, and the pressure of the lower flue 13c ₂ may also be detected.

In addition, the above embodiment and the first modification example have been described in that 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. In addition, the pressure detection unit 200 may be provided at any position in the circumferential direction of the cooling tower 3.

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

In addition, in the above-described embodiment and the first modification, the control unit 202 outputs an alarm when the differential pressure in any one of the plurality of pressure detection units 200 becomes equal to or greater than the threshold value. However, it may be set that the alarm is output only when the differential pressure in the two or more pressure detection units 200 becomes the threshold or more. In this way, false alarms can be prevented.

In addition, 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 may be divided into four or more. Flue.

The embodiments have been described above with reference to the attached drawings, but the present invention is of course not limited to this embodiment. Obviously, if one has ordinary knowledge in the technical field, various modifications or amendments can be considered in the scope described in the patent application scope, and such modifications or amendments are naturally included in the technical scope.

[Industry availability]

The invention can be used for coke dry fire extinguishing equipment.

3‧‧‧cooling tower

3a‧‧‧Wall

3b‧‧‧Inner side wall

3e‧‧‧Outside wall

3f‧‧‧Connect wall

3g‧‧‧support wall

3g ₁ ‧‧‧horizontal

3g ₂ ‧‧‧ Inclined part

13‧‧‧Small flue

13a‧‧‧Opening

13c‧‧‧Lower access

13c ₁ ‧‧‧ Upper flue

13c ₂ ‧‧‧ Lower flue

13d‧‧‧Upper access

100‧‧‧Partition

102‧‧‧Body

104‧‧‧Plate

106‧‧‧Refractory layer (refractory, refractory with irregular shape)

110‧‧‧Refractory layer (refractory, fixed shape refractory)

120‧‧‧locking part

120a‧‧‧Bottom

122‧‧‧fitting part

130‧‧‧foot

200‧‧‧Pressure Detection Department

200a‧‧‧Lower Detection Department

200b‧‧‧Upper Detection Department

200c‧‧‧Differential Pressure Derivation Department

202‧‧‧Control Department

204‧‧‧Notification Department

Claims (5)

A coke dry-type fire extinguishing equipment, comprising: a cooling tower with a cooling chamber surrounded by a wall portion; a gas supply section provided in the cooling tower to supply gas into the cooling chamber; a small flue formed in the cooling The wall portion of the tower is more vertically above the gas supply portion and opens in the cooling chamber; the partition member is provided in the small flue and divides the small flue into a plurality of flues in the vertical direction; And the pressure detection unit detects the pressure of the lowest flue located at the bottom of the vertical direction at least among the plurality of flues. The coke dry fire extinguishing equipment as described in item 1 of the patent scope, wherein the pressure detection unit includes: a lower detection unit, which detects the pressure of the lowermost flue; the upper detection unit, which detects The lower detection part is more close to the pressure in the vertical direction; and the differential pressure derivation part derives the differential pressure between the pressure detected by the lower detection part and the pressure detected by the upper detection part. The coke dry-type fire extinguishing equipment as described in item 2 of the patent application scope, wherein the upper detection part detects the pressure in the vertical direction more than the upper end of the partition member. The coke dry fire extinguishing equipment as described in item 2 or item 3 of the patent application scope is provided with a control unit which makes a plan when the differential pressure derived by the differential pressure derivation unit becomes more than a preset threshold value Notification. The coke dry fire extinguishing equipment according to any one of the items 1 to 4 of the patent application scope, wherein the pressure detection unit is provided in a plurality of different small flues.

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