KR20080111084A - Coke fall control device for dry-type coke extinguishing facility - Google Patents

Abstract

[PROBLEMS] A coke fall control device for a dry-type coke extinguishing facility, capable of improving falling conditions of coke. [MEANS FOR SOLVING THE PROBLEMS] In the dry-type coke extinguishing facility, a quenching chamber (3) for quenching falling red-hot coke is disposed at the lower part of a prechamber into which the red-hot coke is charged. A quenching gas blowing device (7) for blowing a quenching gas to the center of a reverse-conical part (6) formed at the lower part of the quenching chamber (3) is supported by a support member (8), and the support member (8) is connected to a quenching gas feed system. The facility has knockers (11) for hammering the support member (8) which supports the quenching gas blowing device (7) installed at the reverse-conical part (6) and hinders the falling of the coke. Thus, the hammering by the knockers (11) imparts an impact to the coke at positions where the fall of the coke is hindered. ® KIPO & WIPO 2009

Description

COK FALL CONTROL DEVICE FOR DRY-TYPE COKE EXTINGUISHING FACILITY}

The present invention relates to a coke drop control apparatus for improving the coke drop situation in the chamber of the coke dry fire extinguishing equipment.

The hot coke discharged from the coke oven is cooled in the coke dry extinguishing system. 6 is a schematic longitudinal cross-sectional view of a coke dry fire extinguishing system. In FIG. 6, the chamber of the coke dry fire extinguishing system is composed of a prechamber 1 into which the red coke 2 is introduced, and a cooling chamber 3 cooling the red coke 2 that descends. Between the prechamber 1 and the cooling chamber 3, an annular sloping flue 4 for extracting the heat exchanged hot exhaust gas is connected to the communication 5.

In the lower part of the cooling chamber 3, an inverted conical part 6 is formed by lining a liner in a steel shell, and a cooling gas ejection device for ejecting a cooling gas in the center of the inverted conical part 6 ( 7 is supported by the support member 8 which also serves as a gas pipe for guiding the gas for cooling to the ejector 7, and a coke outlet 9 is formed at the lower portion of the reverse conical section 6, and the reverse conical section 6. ), A cooling gas chamber 10 for supplying a cooling gas to the cooling gas ejection device 7 is formed.

The glowing coke 2 conveyed from the coke oven is introduced into the prechamber 1 and cooled by the gas for cooling blown out of the gas blowing device 7 for cooling while the cooling chamber 3 descends. And is discharged from the coke outlet 9.

In order to cool coke efficiently, it is necessary to drop coke at a uniform speed. The drop of coke in the cooling chamber is characterized by the friction of the surrounding wall, the mounting position, the size, the roughness of the surface liner, and the coke discharge port of the cooling gas ejection device formed under the cooling chamber. Due to the large domination of the peripheral reverse cone-shaped liner step and surface roughness gradually decreasing toward the surface, the drop of coke is delayed by frictional resistance at the peripheral wall portion and the center portion is accelerated. In order to prevent this, as a means for equalizing the coke descent rate, a cooling gas blowing device is disposed in the center of the vicinity of the inverted cone.

Steps and surface roughness of the liner of the cooling chamber are easily slipped over time due to coke wear during operation. In other words, as the liner slips easily, the coke drop in the chamber changes.

In addition, in the conical section, the coke is resisted during the descent due to the cooling gas ejection device and the supporting member disposed therein, the descent is inhibited, the descent rate is disturbed, and the descent rate distribution of the coke is uneven, which affects the cooling performance. give. In particular, there is a step in the liner, which is a serious problem in the beginning of construction or replacement of the liner with poor roughness.

As a countermeasure, Patent Literature 1 discloses a dropping control panel that can be lifted up and down in an inverted horn shape so that the coke can be uniformly lowered, and an unbalance of the drop can be estimated using a thermometer installed above the chamber. A coke dropping speed controller is described which moves to control a coke dropping speed.

[Patent Document 1] Japanese Patent Application Publication No. 58-13962

However, since the apparatus of the said patent document 1 must install what has a complicated mechanism in the coke which is high temperature, dust atmosphere, and high abrasion, installation is practically difficult.

Accordingly, the present invention is to provide a coke drop control apparatus that can be installed in the coke dry fire extinguishing equipment to improve the coke descent situation by being installed in a high temperature, dust atmosphere and not affected by abrasion.

According to the present invention, a cooling chamber for cooling the glowing coke descending to the lower portion of the prechamber into which the red coke is introduced is disposed, and a cooling gas ejection device for ejecting the cooling gas to the center of the inverse conical portion formed at the lower portion of the cooling chamber provides a gas pipe. In the coke drop control apparatus for a coke dry fire extinguishing system, a support member which is supported by a double supporting member and protrudes outward from an inverted conical portion is connected to a cooling gas supply system, and a coke outlet is formed in a lower portion of the inverted conical portion. A knocker is provided that strikes the support member of the cooling gas blowing device for cooling the inverted conical section and / or the coke contact surface around the shell of the inverted conical section that hinders the coke from falling. The impact is given to the coke of the place where the fall is inhibited, and the coke fall is accelerated. The knocker may use a knocker driven by a compressed gas. In addition, the knocker may be disposed in the cooling gas chamber formed on the outer side of the inverted cone.

Further, a plurality of thermometers are provided at intervals in the circumferential direction on the upper side of the inverted conical section, and if the temperature measured by each thermometer is lower than the set temperature and other measured temperatures, it is determined that the coke drop in the direction is slow and the temperature is low. The control apparatus which drives a knocker of a location can be provided. The thermometer may be arranged to be out of phase with the knockers arranged at intervals in the circumferential direction.

Effect of the Invention

The present invention imparts a hammering impact to the coke contact surface around the shell of the inverted conical portion which gradually decreases toward the support member and / or the coke outlet, which hinders the coke descent, thereby impacting the coke to promote coke dropping. Cooling performance can be improved.

In addition, since a plurality of knockers are provided in the circumferential direction, based on the measured temperature results of the thermometers installed in the circumferential direction of the chamber shell, if the temperature measured by each thermometer is lower than the set temperature and other measured temperatures, the coke drop in that direction is slow. By judging and intensively hammering the location where the temperature is low, the coke drop of the location can be promoted.

If the liner step or roughness is poor at the beginning of construction or immediately after the liner change, the coke drops are uneven and cooling performance is low. Therefore, the coke drops are uniformed by intensively hammering by the knocker according to the present invention. Can be improved.

In the present invention, since the knocker is installed in the cooling gas blowing chamber under the chamber, it is not subject to abrasion of coke, and since the ambient temperature is low and stable, the load applied to the knocker is small and stable operation can be performed.

1 shows one embodiment of the coke drop control apparatus of the present invention, (a) is a plan view, (b) is a longitudinal sectional view, and (c) is a longitudinal sectional view showing an example where the cooling gas supply system is an annular duct. .

2 is a control system diagram of a knocker used in the present invention.

FIG. 3A is an elapsed diagram schematically illustrating a change in temperature measured by a thermometer of the coke drop control apparatus shown in FIG. 1, and FIG. 3B is a view showing a portion where the coke fall rate is slow.

Figure 4 shows one embodiment of the coke drop control apparatus of the present invention, (a) is a plan view, (b) is a longitudinal sectional view, (c) is a longitudinal sectional view showing an example in which the cooling gas supply system is an annular duct. .

5 shows one embodiment of the coke drop control apparatus of the present invention, (a) is a plan view, (b) is a longitudinal sectional view, and (c) is a longitudinal sectional view showing an example where the cooling gas supply system is an annular duct. .

6 is a schematic longitudinal sectional view of a coke fire extinguishing system.

<Description of the code>

1 prechamber

2 glowing coke

3 cooling chamber

4 sloped flu

5 communication

6 Conical Cone

7 Gas blowing device for cooling

8 support member

9 coke outlet

10 Gas supply system for cooling (cooling gas chamber, annular duct)

11 knocker

Preferred embodiment of this invention is described in detail, referring an accompanying drawing.

(First embodiment)

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1: shows one embodiment of the coke fall control apparatus of this invention, (a) is a top view, (b) is a longitudinal cross-sectional view, (c) is a longitudinal cross-sectional view which shows the example in which the cooling gas supply system is an annular duct. .

In the center of the reverse conical part 6 of the lower part of the cooling chamber, the cooling gas blowing device 7 which blows cooling gas into the cooling chamber 3 is supported by the support member 8 arrange | positioned crosswise. The end of the supporting member 8 extends outward from the wall of the inverted conical section 6. The support member 8 also serves as a gas pipe for guiding the cooling gas to the cooling gas blowing device 7. On the other hand, the supply system 10 of the cooling gas connected to the support member 8 may be the annular duct 10 as shown in FIG. 1 (c) instead of the cooling gas chamber 10 shown in FIG. 1 (b). do.

The support member 8 is provided with a knocker 11 that imparts a hit continuously or intermittently to the support member 8 at a portion projecting outwardly of the inverted conical portion 6. That is, knockers 11 are formed at respective ends extending in the cross direction of the support member 8. The knocker 11 may use a commercially available compressed gas such as nitrogen or air, or an electric one. As the compressed gas knocker, for example, a relay knocker manufactured by EXEN Corporation, an air knocker manufactured by SEISHIN ENTERPRISE CO., LTD., And Euras Techno Co., Ltd. A single impactor manufactured by URAS TECHNO CO., LTD. Can be used. As the electric knocker, for example, an electromagnetic mag hammer manufactured by Nippon Magnetics Co., Ltd. and a magnetic impactor manufactured by Euras Techno Co., Ltd. can be used. Since the knocker is driven by electric or by a compressed gas type driven by a compressed gas such as compressed nitrogen or compressed air, the structure is very simple. In the case of driving by compressed gas, the number of hammerings and the ability can be changed by changing the supply pressure, so that the strength of the chamber body can be set to an appropriate strength that does not adversely affect the chamber body. It is also preferable to drive with compressed nitrogen rather than compressed air for safety reasons.

As shown in FIG. 1 (b), FIG. 4 (b) and FIG. 5 (b) described later, the support member 8 in which the place to place the knocker is located inside the cooling gas chamber of reference numeral 10, the inverted cone type In the case of the part 6, the placer is heat-resistant since the gas of 120 to 130 ° C. containing carbon monoxide (CO) and hydrogen (H ₂ ) passes, and in the case of an electric drive type, the knocker is explosion-proof. I use that.

On the other hand, as shown in FIG. 1 (c), FIG. 4 (c) and FIG. 5 (c) which will be described later, the support member 8 in which the place to place the knocker is located outside the cooling gas chamber of reference numeral 10, In the case of the inverted cone part 6, since the said place is outside air, the said heat resistance and explosion-proof property do not need to be considered.

In the present embodiment, when the discharged coke temperature is higher than planned, immediately after the beginning of construction or after the liner change, the drop of the coke is judged to be uneven. Therefore, when the hammer is intensively hammered on the support member, the knocking of the knocker is caused by the coke around the support member. It is transmitted, and the drop of coke is promoted. Although the number of places to give an impact is four places of the knocker 11 formed in the support member 8, by giving an impact to the said knocker 11, the impact is transmitted not only to an outer periphery but to the inside of a coke lump. Therefore, the drop control can be efficiently performed with a small number of knockers 11.

(2nd embodiment)

This embodiment is an example of operating the knocker by detecting a location where the drop of coke is uneven in the configuration shown in FIG. 1.

In FIG. 1, the thermometer 12 is attached to the iron shell of the upper part of the inverse conical part 6 at intervals in the circumferential direction. The thermometer 12 is arrange | positioned so that a phase may shift | deviate from the knocker 11 arrange | positioned at intervals in the circumferential direction. That is, in the example of FIG. 1, the four thermometers 12 (a, b, c, d) are arranged at 90 degree intervals. From another point of view, the position at which these thermometers 12 are arranged is a position corresponding to each of the four coke passing zones defined by the cruciform support member 8.

2 is a control system diagram of a knocker used in the present invention. The driving of each knocker 11 is controlled by the controller 13. The measurement signal measured by the thermometer 12 is input to the control apparatus 13. The controller 13 compares the temperature and judges that the coke drop in the direction is slower if the temperature is lower than the set temperature and the other measured temperature, and drives the knocker 11 at the low temperature to inflict a blow on the support member. Thereby facilitating the drop of coke around the support member. As an example, the controller 13 determines that the drop of coke is uneven when the temperature difference between the set temperature set within the range of 300 to 500 ° C and the other thermometer is lower than the temperature set within the range of 30 to 50 ° C. Drive the knocker. The strength and frequency of the hammer ring are controlled by the controller according to the temperature change.

Operation of the knocker based on the temperature change of the thermometer 12 will be described in more detail with reference to FIG. 3. FIG. 3 (a) is a lapse diagram of measured temperatures of the thermometer 12 (a, b, c, d), and schematically illustrates a temperature change when the coke drop of the site Q shown in FIG. 3 (b) is delayed. Is shown. As shown in Fig. 3 (a), when the coke drop is uniform in the chamber, the four thermometers 12 (a, b, c, d) change with approximately the same temperature, but the location of the site Q is changed. When the nonuniformity of descent arises, the residence time of the coke of the said location becomes long, and the temperature of the thermometer 12a falls below the temperature of other thermometer 12 (b, c, d). When the temperature of the thermometer 12a becomes lower than the set temperature, the control apparatus 13 judges that the fall speed of the said part (namely, site | part Q) is slow, and drives the knocker 11 (A, B), and cokes coke. Promotes descent of

According to this embodiment, the location where the fall rate of coke became slow can be detected quickly through the temperature change of the thermometer 12, and the coke fall of the said point can be accelerated by intensively driving the knocker of the location with low temperature. . In addition, since only the knocker at a location having a low temperature is driven, it is possible to efficiently eliminate the unevenness of the drop with only the minimum driving required.

(Third embodiment)

4 shows one embodiment of the coke drop control apparatus of the present invention, (a) is a plan view, (b) is a longitudinal sectional view, and (c) is a longitudinal sectional view showing an example in which the cooling gas supply system is an annular duct. .

In the present embodiment, a plurality of knockers 11 are provided on the steel bar of the inverted conical section 6 at intervals in the circumferential direction. That is, in the example of FIG. 4, two sets of knockers are formed at positions corresponding to each of the four coke passing regions partitioned by the cross support member 8, respectively. If the drop of coke becomes uneven, when knocking the inverted conical part 6 with the knocker 11 from the outer surface, the blow is transmitted to the coke, and the coke drops. By arranging a large number of knockers on the outer surface of the inverted conical section 6 as in the present embodiment, it is possible to efficiently control the drop in the circumferential direction.

(4th Embodiment)

This embodiment is an example which operates the knocker by detecting the location where the fall of coke is nonuniform in the structure shown in FIG. Specifically, similarly to the second embodiment described above, a thermometer is installed on the steel bar at the upper portion of the inverse conical section at intervals in the circumferential direction, and the knocker 11 at a low temperature is driven to inflict the coke contact surface to give a coke. Promotes descent of Such a structure can also obtain the same effects as in the second embodiment.

(5th Embodiment)

5 shows one embodiment of the coke drop control apparatus of the present invention, (a) is a plan view, (b) is a longitudinal sectional view, and (c) is a longitudinal sectional view showing an example where the cooling gas supply system is an annular duct. . In this embodiment, the knockers are arranged at the end portions of the support member 8 protruding outward of the inverted conical portion 6 and the outer surface of the inverted conical portion 6 at intervals in the circumferential direction. That is, it is the structure which combined the structure of 1st Embodiment shown in FIG. 1, and 3rd Embodiment shown in FIG. According to the present embodiment, by controlling the knocker formed on the support member 8 and the inverted conical portion 6, it is possible to efficiently control the inside and the circumferential drop of the coke mass.

(6th Embodiment)

This embodiment is an example which detects the location where the fall of coke is nonuniform, and operates a knocker in the structure shown in FIG. Specifically, similarly to the second and fourth embodiments described above, the thermometer 12 is provided at intervals in the circumferential direction on the steel bar on the upper portion of the inverted conical portion, and the knocker 11 at the low temperature is driven. The impact on the inner and circumferential direction of the coke mass is accelerated to promote the coke descent. By such a configuration, the same effects as in the second and fourth embodiments can be obtained.

In addition, in this embodiment, the drive of the knocker formed in the support member 8 and the reverse conical part 6 can be controlled as follows according to the magnitude | size of the temperature difference with another thermometer. That is, when the temperature difference between the thermometer whose temperature is lowered and other thermometers is less than 30 ° C, the drop of coke is judged to be uniform, and the knocker is not operated, and when the temperature difference with other thermometers is 30 ° C or more and less than 50 ° C, the drop of coke is It is determined that it is non-uniform so as to operate either knocker formed in the support member 8 or the reverse conical section 6. In addition, when the temperature difference with other thermometers is 50 degreeC or more, it is judged that the fall of coke is more nonuniform, and it is made to operate both the knockers formed in the support member 8 and the reverse conical part 6.

Claims (7)

A cooling chamber for cooling the glowing coke descending to the lower part of the prechamber into which the red coke is introduced is disposed, and a cooling gas ejection device for ejecting the cooling gas to the center of the inverted conical portion formed at the lower portion of the cooling chamber provides a gas pipe. In the coke dropping control apparatus of the coke dry fire extinguishing system which is supported by the support member which is doubled, and the support member which protrudes outward from the inverse conical part is connected to the cooling gas supply system, and the coke discharge port was formed in the lower part of the inverse conical part, A coke drop control apparatus for a coke dry fire extinguishing system, characterized by disposing a knocker that imparts a striking force to an extended portion protruding outward from an inverted cone portion of a support member. A cooling chamber for cooling the glowing coke descending in the lower part of the prechamber into which the coke is introduced is disposed, and a cooling gas ejection device for ejecting the cooling gas into the center of the inverse conical section formed in the lower part of the cooling chamber serves as a gas pipe. In the coke dropping control device of the coke dry fire extinguishing equipment, which is supported by, and the support member protruding outward from the inverted conical part is connected to the cooling gas supply system, and the coke outlet is formed in the lower part of the inverted conical part. A coke drop control apparatus for a coke dry fire extinguishing system, characterized by arranging a knocker that imparts a strike force to an outer surface of an inverse conical section at intervals in a circumferential direction. A cooling chamber for cooling the glowing coke descending in the lower part of the prechamber into which the coke is introduced is disposed, and a cooling gas ejection device for ejecting the cooling gas into the center of the inverse conical section formed in the lower part of the cooling chamber serves as a gas pipe. In the coke dropping control device of the coke dry fire extinguishing equipment, which is supported by, and the support member protruding outward from the inverted conical part is connected to the cooling gas supply system, and the coke outlet is formed in the lower part of the inverted conical part. A coke is provided with a knocker that imparts a striking force to an extended portion protruding outward from the inverted conical portion of the support member, and a knocker that imparts a striking force to an outer surface of the inverted conical portion at intervals in the circumferential direction. Coke drop control device for dry fire extinguishing equipment. The method according to any one of claims 1 to 3, When a plurality of thermometers are provided at intervals in the circumferential direction on the upper side of the inverted cone, and the temperature measured by each thermometer is lower than the set temperature and other measured temperatures, it is determined that the coke drop in the direction is slow and A coke drop control apparatus for a coke dry fire extinguishing system, comprising a control device for driving a knocker. The method of claim 4, wherein The thermometer is coke drop control apparatus of the coke dry fire extinguishing system, characterized in that the phase is arranged out of phase with the knocker disposed at intervals in the circumferential direction. The method according to any one of claims 1 to 5, Coke drop control device of the coke dry fire extinguishing system characterized in that the knocker is a knocker driven by a compressed gas. The method according to any one of claims 1 to 6, A coke drop control apparatus for a coke dry fire extinguishing system, wherein a knocker is formed in a cooling gas chamber formed at an outer side of the inverted cone.

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