JP6531472B2 - Dust collection method for coke dry extinguishing system and dust collecting apparatus for coke dry extinguishing system - Google Patents

Description

  The present invention relates to a method for collecting coke dry-type fire extinguishing equipment for collecting dust generated during charging of the red-hot coke, and to a dust-collecting device for coke dry-type fire extinguishing equipment in coke dry-type fire extinguishing equipment for extinguishing red hot coke. It is a thing.

Conventionally, wet fire extinguishing methods and dry fire extinguishing methods have been provided as fire extinguishing methods for red heat coke extracted from coke ovens, but in recent years, from the viewpoint of effectively using sensible heat of red heat coke, dry fire extinguishing methods (coke Dry fire extinguishing equipment) is the mainstream.
In coke dry extinguishing equipment, a large amount of dust and exhaust gas are generated when red-hot coke is charged into a cooling tower, so various methods for dust collection have been studied conventionally.

  For example, Patent Document 1 proposes a method for collecting dust in an entire building that accommodates a rolled-up portion and a charged portion of red-hot coke in a coke-type dry fire extinguishing system. However, the method described in Patent Document 1 has a problem that the equipment becomes large-scaled and the initial cost increases. In addition, there is a problem that the dust collection efficiency is extremely low because dust is collected in the entire building.

Moreover, in patent document 2, the dust collection hood and the dust collection duct are integrated and arrange | positioned to the hopper which charges red thermal coke, and the method of attracting | sucking the dust which generate | occur | produces at the time of red thermal coke charge is proposed. Furthermore, Patent Document 3 proposes a direction of gas sealing (water sealing) the dust collecting hood provided at the lower portion of the hopper and the upper portion of the cooling tower when the red coke is received and charged to the hopper.
The methods described in these Patent Documents 2 and 3 can efficiently collect dust at the time of charging red-hot coke, but when flammable gas is present in the exhaust gas sucked together with the dust, the dust can be collected. There was a risk that the combustible gas would burn abnormally in the dust collection duct.

  Further, Patent Document 4 proposes a method of suppressing generation of dust-containing exhaust gas by controlling the exhaust amount of circulating gas of the dry fire extinguishing facility to be larger than the supply amount at the time of red coke charging. There is. In this case, when the balance between the exhaust amount and the supply amount is broken, the exhaust gas containing the flammable gas is discharged, and there is also a possibility that the flammable gas is abnormally burned in the dust collection duct.

In order to suppress abnormal combustion of the combustible gas contained in the exhaust gas, it is effective to cool the temperature of the exhaust gas to below the self-ignition temperature of the combustible gas.
Here, as means for cooling the high temperature exhaust gas, for example, Patent Documents 5 to 7 propose a method of mist cooling the high temperature gas.

  Patent Document 5 discloses that dust deposition is suppressed by defining a mist particle size when mist-cooling a high-temperature exhaust gas. However, the method of Patent Document 5 can not be applied to coke dry fire extinguishing equipment that generates a large amount of dust because the accumulation of dust can not be suppressed.

Moreover, in patent document 6, after making combustible gas in waste gas burn with a burner, the method of carrying out mist cooling is proposed. In this case, since dust contained in the exhaust gas interferes with the combustion, it has been difficult to apply to a coke dry fire extinguishing system which generates a large amount of dust.
Furthermore, in Patent Document 7, when charging the hot metal in the converter, the dust collection device of another system is started to suck in the high temperature exhaust gas having a large content of dust, and the high temperature exhaust gas is cooled. It is disclosed to cool by the In this case, since the two-system dust collecting apparatus is used, there is a problem that the equipment becomes large and the initial cost is increased.

Japanese Patent Application Laid-Open No. 07-126644 JP 2005-272500 A JP 2006-265500 A JP 2012-007112 A JP, 2006-000786, A Unexamined-Japanese-Patent No. 04-346810 JP-A-52-155108

As described above, it has been difficult to stably collect dust and exhaust gas at the time of charging red-hot coke by the dust collection method of the conventional coke dry fire extinguishing equipment and the dust collector of the coke dry fire extinguishing equipment.
In addition, depending on the dispersion of coke raw materials and the operating conditions of the coke oven, undistilled coke is present in the red thermal coke extracted from the coke oven, and the amount of generated dust and combustible gas is generated by the combustion of the undried coke. May increase. In particular, undistilled coke tends to remain in an aging coke oven, and the amount of generated dust and the amount of combustible gas tend to increase. Even in such a case, it is required to stably collect dust at the time of charging red-hot coke.

  The present invention has been made in view of the above situation, and it is possible to stably collect a large amount of dust generated at the time of charging red thermal coke, and a dust collection method for coke dry fire extinguishing equipment and coke dry fire extinguishing The purpose is to provide a dust collector for equipment.

In order to solve the above problems, the dust collection method of coke dry fire extinguishing equipment according to the present invention collects dust generated at the time of charging of the red heat coke together with exhaust gas in the coke dry fire extinguishing device for extinguishing red heat coke. A dust collection method for coke dry extinguishing equipment, comprising: a dust collection hood disposed at the inlet of the red heat coke; a dust collection duct connected to the dust collection hood; and a dust collection direction downstream of the dust collection duct A dust collection filter portion disposed on the side, and a water sprinkling nozzle for sprinkling mist in the dust collection duct, wherein the water sprinkling nozzle is a connection portion between the dust collection hood and the dust collection duct together are arranged respectively formed in the position, is arranged to protrude into the tip of the dust collecting duct, the distance are equal to or greater than 100mm between the nozzle tip position and the inner wall surface of the dust collecting duct, At the time of charging with red heat coke, mist is sprayed into the dust collection duct, and the temperature of the exhaust gas exceeds the dew point temperature in the dust collection filter section and is less than the self-ignition temperature of the combustible gas contained in the exhaust gas. It is characterized by adjusting to.

According to the dust collection method of the coke dry extinguishing facility of this configuration, the inside of the dust collection duct is set so that the temperature of the exhaust gas becomes lower than the self-ignition temperature of the combustible gas contained in the exhaust gas when charging the red thermal coke. Since misting is performed, the occurrence of abnormal combustion in the dust collection duct can be suppressed. Further, since the temperature of the exhaust gas is adjusted to exceed the dew point temperature in the dust collection filter portion, the occurrence of dew condensation in the dust collection filter portion can be suppressed. Therefore, dust generated at the time of charging of the red-hot coke can be stably collected.
Further, since the nozzle tip position is disposed to protrude from the inner wall surface so as to be separated from the inner wall surface of the dust collection duct by 100 mm or more, the occurrence of condensation on the wall surface of the dust collection duct can be suppressed.

Here, in the dust collection method of coke dry-type fire extinguishing equipment according to the present invention, the water sprinkling nozzle is a two-fluid nozzle, and the air flow rate Q _A (Nl / min) and the water spouting amount Q _W (Nl) in the water sprinkling nozzle It is preferable to set the ratio Q _A / Q _W with / min) to 100 or more.
In this case, a two-fluid nozzle is used as the nozzle for water sprinkling, and the ratio Q _A / Q _W of the air flow rate Q _A (Nl / min) to the water sprinkling amount Q _W (Nl / min) is set to 100 or more. The sprayed water becomes easy to evaporate, and the exhaust gas can be reliably cooled, and the occurrence of condensation in the dust collection filter can be reliably suppressed.

In the coke dry fire extinguishing equipment according to the present invention, the dust collector of the coke dry fire extinguishing equipment collects dust generated at the time of charging the red heat coke, in the coke dry fire extinguishing equipment that extinguishes red heat coke. A dust collection hood disposed at the red coke inlet, a dust collection duct connected to the dust collection hood, and a dust collection dust downstream of the dust collection duct in the dust collection direction It has a filter part, a nozzle for watering which carries out mist watering in the dust collection duct, and a watering control part which controls operation of the nozzle for watering, and the nozzle for watering contains the dust collecting hood and the dust collection. Each is disposed at a position where a connecting portion with a duct is formed, and the tip is disposed so as to protrude into the dust collection duct, and the distance between the nozzle tip position and the inner wall surface of the dust collection duct is 100 mm And more It is, the water spray control unit, in the red hot coke instrumentation Nyutoki, the mist water spray into the dust collecting duct from the water spray nozzle, the temperature of the exhaust gas exceeds the dew point temperature at the dust filter unit, And it is characterized by adjusting the amount of watering from the nozzle for watering so that it may become less than the self-ignition temperature of the combustible gas contained in the said waste gas.

According to the dust collecting apparatus of the coke dry extinguishing facility of this configuration, the water sprinkling control unit includes the water sprinkling nozzle for sprinkling mist in the dust collection duct, and the sprinkling control unit that controls the operation of the sprinkling nozzle. When the red-hot coke is charged, misting is carried out in the dust collection duct, and the temperature of the exhaust gas is lower than the self-ignition temperature of the combustible gas contained in the exhaust gas and exceeds the dew point temperature in the dust collection filter portion As described above, since the amount of water sprayed from the water spray nozzle is adjusted, the occurrence of abnormal combustion due to the combustible gas contained in the exhaust gas can be suppressed, and the occurrence of condensation in the dust collection filter portion It can be suppressed.
Further, since the nozzle tip position is disposed to protrude from the inner wall surface so as to be separated from the inner wall surface of the dust collection duct by 100 mm or more, the occurrence of condensation on the wall surface of the dust collection duct can be suppressed.

Here, in the dust collecting apparatus of the coke dry-type fire extinguishing equipment of the present invention, the water sprinkling nozzle is a central portion of the dust collection duct on the downstream side in the dust collection direction from a connecting part between the dust collection hood and the dust collection duct. It is preferable to be arranged to spray water toward the
In this case, the mist is sprayed toward the central portion of the dust collection duct on the downstream side of the dust collection direction from the connection portion between the dust collection hood and the dust collection duct (a region where the dust collection velocity is high and exhaust gas hardly stagnates) As a result, the exhaust gas in the dust collection duct can be reliably cooled.

Further, in the dust collector of the coke dry quenching equipment of the present invention, the water spray nozzle is placed so that the spray angle in the range of 10 ° or more than 30 ° to the central axis of the dust collecting duct Is preferred.
In this case, since the injection angle of the nozzle for water sprinkling is set within the range of 10 ° to 30 ° with respect to the central axis of the dust collection duct, mist water sprinkling reliably for the exhaust gas flowing in the dust collection duct And the exhaust gas can be cooled .

Moreover, in the dust collection apparatus of the coke dry fire extinguishing equipment of this invention, it is preferable that the protective pipe is arrange | positioned by the said nozzle for watering.
In this case, deterioration of the water spray nozzle is suppressed by the protective pipe, and the life of the water spray nozzle can be extended.

  As described above, according to the present invention, it is possible to stably collect a large amount of dust generated at the time of charging red thermal coke, and a dust collection method for coke dry fire extinguishing equipment and a dust collector for coke dry fire extinguishing equipment It becomes possible to offer.

It is a schematic diagram of the coke dry fire extinguishing equipment which is this embodiment. It is a schematic explanatory drawing of the entrance vicinity of the coke dry fire extinguishing installation shown in FIG. It is side explanatory drawing of the entrance vicinity of the coke dry fire extinguishing installation shown in FIG. It is a schematic explanatory drawing of the dust collector of coke dry fire extinguishing equipment which is one embodiment of the present invention. It is a schematic explanatory drawing of the end surface of the dust collection duct provided in the dust collector of coke dry fire extinguishing equipment shown in FIG. It is explanatory drawing which shows the switching state of the discharge gate provided in the end surface of the dust collection duct shown in FIG. (A) shows the state at the time of red-hot coke charging. (B) shows the state other than charging with red-hot coke. It is a schematic explanatory drawing of the nozzle for watering provided in the dust collector of the coke dry fire extinguishing installation shown in FIG. It is a schematic explanatory drawing of the nozzle for cleaning provided in the dust collector of the coke dry fire extinguishing installation shown in FIG.

Below, the dust collection method of the coke dry extinguishing equipment 1 and the dust collecting apparatus 10 of the coke dry extinguishing equipment 1 according to an embodiment of the present invention will be described with reference to the attached drawings. The present invention is not limited to the following embodiments.
The dust collecting apparatus 10 of the coke dry-extinguishing system 1 according to the present embodiment is to collect dust generated when charging red-hot coke from the inlet of the cooling tower 3 of the coke dry-extinguishing system 1 together with exhaust gas. . The exhaust gas contains flammable gas.

  As shown in FIGS. 1 to 4, the dust collecting apparatus 10 of the coke dry extinguishing system 1 according to the present embodiment is connected to the dust collecting hood 11 provided at the inlet of red heat coke and the dust collecting hood 11. Dust collecting duct 20, a dust collecting filter portion 13 disposed on the downstream side of the dust collecting duct 20 in the dust collecting direction F, a water sprinkling nozzle 23 for sprinkling mist in the dust collecting duct 20, and a water sprinkling nozzle 23 And a cleaning nozzle 27 for removing the accumulated dust generated in the dust collection duct 20 by water.

Here, as shown in FIGS. 2 and 3, the dust collecting hood 11 and the dust collecting duct 20 are configured to be integrally moved by the movable carriage 15, and the dust collecting hood 11 and the dust collecting hood 11 are provided on the side surface of the dust collecting duct 20. The connecting portion 17 is formed. In the present embodiment, as shown in FIG. 2, three connecting portions 17 of the dust collecting hood 11 and the dust collecting duct 20 are formed in the extending direction of the dust collecting duct 20.
In the present embodiment, as shown in FIG. 2 and FIG. 3, the dust collection duct 20 has a substantially cylindrical shape, and the connection portion 17 described above is formed on a part of the cylindrical surface.

The dust collection duct 20 is directed from the upstream side (left side in FIGS. 2 and 4) to the downstream side (right side in FIGS. 2 and 4) from the upstream side (left side in FIGS. 2 and 4). It inclines in the range of 1 degree or more and 5 degrees or less with respect to a horizontal line so that it may go upward gradually.
Further, as shown in FIG. 5 and FIG. 6, a hanging plate type discharge gate 21 is provided at the upstream end of the dust collection duct 20 in the dust collection direction F. In addition, the guide part 22 is provided in the outer side of the discharge gate 21. As shown in FIG.
As shown in FIG. 6, the exhaust gate 21 is closed by the air pressure when dust is collected during charging of red-hot coke (see FIG. 6 (a)), and is free except during red-hot coke charging. (See FIG. 6 (b)).

And in dust collection device 10 of coke dry extinguishing installation 1 which is this embodiment, as shown in Drawing 4 and Drawing 7, it is a position where connection part 17 of dust collection hood 11 and dust collection duct 20 was formed. There are provided nozzles 23 for water sprinkling to spray dust into the dust collection duct 20 respectively. In the present embodiment, the water sprinkling nozzle 23 is a two-fluid nozzle that mixes and jets liquid (water) and gas (air).
The water sprinkling nozzle 23 is disposed so as to spray water toward the center of the dust collection duct 20 on the downstream side in the dust collection direction F from the connection portion 17. Specifically, the spray angle θ 1 of the dust collection duct 20 is It is set to be in the range of 10 ° to 30 ° with respect to the central axis O.

The tip of the water sprinkling nozzle 23 is disposed so as to protrude into the dust collection duct 20, and the distance H between the nozzle tip position and the inner wall surface of the dust collection duct 20 is 100 mm or more. That is, the nozzle 23 for water sprinkling is arrange | positioned so that a nozzle tip position may be spaced apart from the inner wall face of the dust collection duct 20 100 mm or more.
A protective pipe 25 made of, for example, stainless steel or the like is disposed at a portion of the water sprinkling nozzle 23 which protrudes into the dust collection duct 20.

The water sprinkling controller 24 controls the water sprinkling nozzle 23 to control the amount and timing of water sprinkling.
Specifically, the sprinkling control unit 24 sprays mist into the dust collection duct 20 at the time of red coke charging, and the temperature of the exhaust gas in the dust collection duct 20 is less than the self-ignition temperature of the combustible gas contained in the exhaust gas The water sprinkling amount from the water sprinkling nozzle 23 is adjusted so as to exceed the dew point temperature in the dust collection filter portion 13.

Further, in the dust collecting apparatus 10 of the coke dry-type extinguishing equipment 1 according to the present embodiment, as shown in FIGS. 4 and 8, at the position where the connecting portion 17 of the dust collecting hood 11 and the dust collecting duct 20 is formed. A cleaning nozzle 27 for injecting cleaning water into the dust collection duct 20 is disposed. In the present embodiment, the cleaning nozzle 27 is a fan-shaped nozzle whose injection angle is in the range of 10 ° to 30 °.
As shown in FIGS. 4 and 8, the cleaning nozzle 27 is disposed to spray cleaning water from the downstream side of the dust collection duct 20 in the dust collection direction F toward the upstream side in the dust collection direction F. Specifically, the cleaning nozzle 27 is disposed in the upper part of the dust collection duct 20, and the depression angle θ2 is set in the range of 40 ° to 70 °.
The position of the cleaning nozzle 27 is adjusted so that the collision position of the cleaning water is in the downstream direction of the dust collecting direction F of the connecting portion 17 between the dust collecting hood 11 and the dust collecting duct 20.

Next, the dust collection method of the coke dry fire extinguishing equipment 1 using the dust collector 10 of the coke dry fire extinguishing equipment 1 according to the present embodiment will be described.
In order to charge the hot coke into the cooling tower 3 of the coke dry extinguishing system 1, the dust collection hood 11 is disposed above the inlet with the charging hopper 5.

When charging the red-hot coke from the charging hopper 5, the exhaust gas containing the dust generated from the inlet is sucked through the dust collection hood 11 and the dust collection duct 20, and the dust, etc. Remove.
Here, at the time of charging of the red-hot coke, mist spray is carried out from the water spray nozzle 23 into the dust collection duct 20. At this time, the temperature of the exhaust gas in the dust collection duct 20 is less than the self-ignition temperature of the combustible gas contained in the exhaust gas and the dust collection filter portion 13 provided on the downstream side in the dust collection direction F The amount of water sprinkling from the water sprinkling nozzle 23 is adjusted so as to exceed the dew point temperature of
In the water sprinkling nozzle 23 composed of a two-fluid nozzle, the ratio Q _A / Q _W of the air flow rate Q _A (Nl / min) to the water spout Q _W (Nl / min) is 100 or more.

As described above, when misting water from the water sprinkling nozzle 23 into the dust collection duct 20 when the red-hot coke is charged, part of the dust is deposited in the dust collection duct 20.
Therefore, in the present embodiment, the deposition dust in the dust collection duct 20 is cleaned and removed until charging of the next red hot coke is completed after charging of the red hot coke is completed.

Specifically, the cleaning water is jetted from the cleaning nozzle 27, the accumulated dust is cleaned by the cleaning water, and the accumulated dust is discharged from the discharge gate 21 provided at the upstream end of the dust collection duct 20 in the dust collection direction F. Drain containing wash water. In addition, since the discharge gate 21 is of a hanging plate type, it is opened by the water pressure of the washing water.
Here, the amount of washing water jetted from the washing nozzle 27 is set at a volume ratio of not less than twice and not more than 10 times the amount of accumulated dust generated at the time of charging of red hot coke.

  After washing away the deposited dust, charging of the red-hot coke is carried out again. As described above, in the present embodiment, the cooling of the exhaust gas by the mist watering and the cleaning and removing of the deposited dust by the cleaning water are repeated.

According to the dust collecting method of the coke dry extinguishing system 1 and the dust collecting apparatus 10 of the coke dry extinguishing system 1 of the present embodiment configured as described above, misting water from the water sprinkling nozzle 23 during red hot coke charging By setting the temperature of the exhaust gas to be lower than the self-ignition temperature of the combustible gas contained in the exhaust gas, the occurrence of abnormal combustion in the dust collection duct 20 can be suppressed.
In addition, at the time of charging red coke, the amount of water sprinkling from the water sprinkling nozzle 23 is adjusted so that the temperature of the exhaust gas exceeds the dew point temperature in the dust collection filter portion 13 disposed downstream in the dust collection direction F Therefore, the occurrence of condensation in the dust collection filter 13 can be suppressed. Therefore, dust generated at the time of charging of the red-hot coke can be stably collected.

Furthermore, in the present embodiment, a two-fluid nozzle is used as the nozzle 23 for sprinkling, and the ratio Q _A of the air flow rate Q _A (Nl / min) to the sprinkling amount Q _W (Nl / min) in the nozzle 23 for sprinkling / Q _W because there is a more than 100, becomes sprayed water is likely to evaporate, it is possible to reliably suppress the occurrence of condensation in the dust filter unit 13 it is possible to reliably cool the exhaust gas.

Further, in the present embodiment, the water spray nozzle is a central portion of the dust collection duct 20 on the downstream side in the dust collection direction F from the connection part 17 between the dust collection hood 11 and the dust collection duct 20 Since it is arrange | positioned so that water may be sprayed toward the difficult area | region, the waste gas in the dust collection duct 20 can be cooled reliably.
Furthermore, in the present embodiment, since the injection angle θ1 of the nozzle 23 for water sprinkling is set within a range of 10 ° to 30 ° with respect to the central axis O of the dust collection duct 20, the water flows in the dust collection duct 20. The mist can be securely sprayed to the exhaust gas, and the exhaust gas can be efficiently cooled.

Furthermore, in the present embodiment, the tip of the water sprinkling nozzle 23 is disposed so as to protrude into the dust collection duct 20, and the distance H between the nozzle tip position and the inner wall surface of the dust collection duct 20 is 100 mm or more. As a result, the occurrence of condensation on the wall surface of the dust collection duct 20 can be suppressed.
Furthermore, in the present embodiment, a protective pipe 25 made of, for example, stainless steel or the like is disposed at a portion of the water sprinkling nozzle 23 that protrudes into the dust collection duct 20. Deterioration is suppressed, and the life extension of the nozzle 23 for watering can be aimed at.

Further, in the present embodiment, when the red coke charge is not inserted, the accumulated dust in the dust collection duct 20 is washed away by injecting the cleaning water from the cleaning nozzle 27, so the dust collection is performed. There is no large amount of accumulated dust in the duct 20, and dust collection can be performed stably.
Here, in the present embodiment, cleaning is performed so that cleaning water of 2 times or more and 10 times or less by volume ratio is jetted from the cleaning nozzle 27 with respect to the amount of deposited dust generated at the time of charging of red thermal coke. Since the amount of water is set, deposited dust generated during the previous charging of red-hot coke can be removed by washing before the next charging of red-hot coke, which can suppress accumulation of the deposited dust. The dust can be collected stably.

Furthermore, in the present embodiment, the dust collection duct 20 is inclined in the range of 1 ° or more and 5 ° or less with respect to the horizontal line so that the dust collection duct 20 gradually moves upward from the dust collection direction F upstream to the dust collection direction F downstream. The discharge gate 21 for discharging the accumulated dust and the washing water is provided at the upstream end of the dust collection duct 20 in the dust collection direction F. By injecting cleaning water from the downstream side of the dust collection direction F toward the upstream side of the dust collection direction F, cleaning water containing deposited dust is caused to flow toward the upstream side of the dust collection direction F of the dust collection duct 20 for dust collection It can be discharged from the discharge gate 21 provided at the upstream end of the duct 20 in the dust collection direction F. Thus, even when the amount of dust generated is large, the deposited dust in the dust collection duct 20 can be reliably cleaned and removed.

Further, in the present embodiment, the discharge gate 21 is of a hanging plate type, and is closed by suction of exhaust gas at the time of charging red thermal coke, and is opened by the water pressure of washing water at the time of washing of accumulated dust. Therefore, it is not necessary to provide an opening / closing mechanism for the discharge gate 21, and it is possible to stably discharge the cleaning water containing deposited dust. In addition, maintenance work can be significantly reduced.

Furthermore, in the present embodiment, the position adjustment is performed so that the collision position of the cleaning water jetted from the cleaning nozzle 27 becomes the dust collection direction F downstream region of the connecting portion 17 of the dust collecting hood 11 and the dust collecting duct 20 Since the cleaning water is jetted toward the location where the deposition dust tends to be generated, the deposition dust can be efficiently cleaned.
Further, in the present embodiment, the cleaning nozzle 27 is disposed at the upper portion of the dust collection duct 20, and the depression angle θ2 is set in the range of 40 ° to 70 °. The cleaning water can be made to collide with the deposited dust, and the deposited dust can be cleaned efficiently.
Furthermore, in the present embodiment, since the fan-shaped nozzle whose injection angle is in the range of 10 ° to 30 ° is used as the cleaning nozzle 27, scattering of the jetted washing water is suppressed and collected. Cleaning water flows along the bottom of the dust duct 20, and the deposited dust can be efficiently cleaned.

As mentioned above, although the dust collection method of coke dry fire extinguishing equipment which is an embodiment of the present invention and the dust collection equipment of coke dry fire extinguishing equipment are explained, the present invention is not limited to this and the technical idea of the invention It can change suitably in the range which does not deviate.
For example, although it demonstrated as a dust collector provided in the coke dry-extinguishing installation shown in FIG. 1, it is not limited to this and may be applied to the coke dry-extinguishing installation of another structure.

Further, in the present embodiment, the case in which three connecting portions are provided is described as an example, but the present invention is not limited to this, and the number of connecting portions is not limited.
Furthermore, although what arrange | positioned three nozzles for water distribution is illustrated in FIG. 4, it is not limited to this, and there is no limitation in the number of nozzles for water distribution.
Similarly, the number of cleaning nozzles is not particularly limited, and the cleaning nozzles may not be provided.
Moreover, in this embodiment, although the dust collection duct was demonstrated as what was formed in the cylindrical form, it is not limited to this, The dust collection duct of other shapes, such as rectangular cylinder shape, may be sufficient.

DESCRIPTION OF SYMBOLS 1 coke dry fire extinguishing equipment 10 dust collector 11 of coke dry fire extinguishing equipment dust collecting hood 13 dust collecting filter 17 connecting part 20 dust collecting duct 21 discharge gate 23 sprinkling nozzle 24 sprinkling controller 25 protection pipe 27 cleaning nozzle

Claims (6)

A coke dry extinguishing system for extinguishing red hot coke, comprising the steps of: collecting dust together with exhaust gas with dust generated at the time of charging the red hot coke;
A dust collection hood disposed at the inlet of the red-hot coke, a dust collection duct connected to the dust collection hood, and a dust collection filter portion disposed downstream of the dust collection duct in the dust collection direction; And a water sprinkling nozzle for sprinkling mist in the dust collection duct;
The water sprinkling nozzle is disposed at a position where a connecting portion between the dust collecting hood and the dust collecting duct is formed, and a tip of the water sprinkling nozzle is disposed so as to protrude into the dust collecting duct. The distance between the dust collection duct and the inner wall surface is 100 mm or more,
At the time of charging of the red-hot coke, mist is sprayed into the dust collection duct so that the temperature of the exhaust gas exceeds the dew point temperature in the dust collection filter section and is less than the self-ignition temperature of the combustible gas contained in the exhaust gas. The dust collection method of coke dry extinguishing equipment characterized by adjusting to. The water sprinkling nozzle is a two-fluid nozzle, and the ratio Q _A / Q _W of the air flow rate Q _A (Nl / min) to the water sprinkling amount Q _W (Nl / min) at the water sprinkling nozzle is 100 or more. The dust collection method of coke dry fire extinguishing equipment according to claim 1 characterized by A coke dry extinguishing system for extinguishing red coke, which is a dust collector of the coke dry extinguishing device for collecting dust generated at the time of charging of the red coke,
A dust collection hood disposed at the inlet of the red-hot coke, a dust collection duct connected to the dust collection hood, and a dust collection filter portion disposed downstream of the dust collection duct in the dust collection direction; It has a nozzle for sprinkling which carries out mist sprinkling in the dust collection duct, and a sprinkling control part which controls operation of the nozzle for sprinkling,
The water sprinkling nozzle is disposed at a position where a connecting portion between the dust collecting hood and the dust collecting duct is formed, and a tip of the water sprinkling nozzle is disposed so as to protrude into the dust collecting duct. The distance between the dust collection duct and the inner wall surface is 100 mm or more,
The water sprinkling control portion sprays mist into the dust collection duct from the water sprinkling nozzle when charging the red-hot coke, and the temperature of the exhaust gas exceeds the dew point temperature in the dust collection filter portion, and the exhaust gas The dust collection device of the coke dry extinguishing facility, wherein the amount of water sprayed from the water spray nozzle is adjusted so as to be less than the self-ignition temperature of the combustible gas contained therein.   The water sprinkling nozzle is disposed so as to spray water toward a central portion of the dust collection duct on the downstream side in the dust collection direction from a connection portion between the dust collection hood and the dust collection duct. The dust collector of the coke dry fire extinguishing equipment of claim 3. The water spray nozzle according to claim 3 or claim 4, characterized in that the injection angle is placed to be in the range of 10 ° or more than 30 ° to the central axis of the dust collecting duct Dust collector for coke dry fire extinguishing equipment.   The dust collection device of coke dry fire extinguishing equipment according to any one of claims 3 to 5, wherein a protective pipe is disposed on the water spray nozzle.

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