CN218024297U - Dry quenching system and dry quenching boiler outlet flue dust discharging device - Google Patents

Abstract

The embodiment of the utility model provides a dry quenching system and dry quenching boiler outlet flue dust discharging device, wherein, dry quenching system includes material level monitoring device, dry quenching boiler and the flue that communicates with dry quenching boiler, and the flue bottom is provided with the deposition portion, and the deposition portion is linked together with the flue, and the deposition portion is provided with the ash hole, and the ash hole is provided with the dust discharging valve, and the dust discharging valve is used for opening or shutoff ash hole; the material level monitoring device is electrically connected with the ash discharging valve and is used for monitoring the ash deposition amount in the ash deposition part and controlling the ash discharging valve to be in an opening state or a closing state according to the ash deposition amount. The dust generated by coking in the coke dry quenching boiler can be deposited at the bottom of the flue, the dust collecting part is arranged at the bottom of the flue and is used for collecting the dust, the material level monitoring device is used for monitoring the dust collecting amount, the material level monitoring device controls the opening of the dust discharging valve, the dust is discharged out of the flue through the dust discharging valve, and the automatic dust discharging mode is favorable for ensuring the smoothness of the flue and improving the production efficiency of the coke dry quenching.

Description

Dry quenching system and dry quenching boiler outlet flue dust discharging device

Technical Field

The utility model relates to a coking technical field especially relates to a dry coke quenching system and dry coke quenching boiler outlet flue dust discharging device.

Background

At present, during the long-term operation of a coke dry quenching boiler in a coke dry quenching system, dust deposition can be inevitably generated in an outlet flue of the coke dry quenching boiler, the dust deposition can cause the increase of the flow resistance of circulating gas in the coke dry quenching system, and under some abnormal operation working conditions, the dust deposition can also cause the coke dry quenching system to be forced to stop for maintenance.

Because the accumulated dust in the outlet flue of the coke dry quenching boiler can not be automatically discharged in the operation process of the coke quenching system, the coke dry quenching boiler needs to be shut down and manually enters the outlet flue to carry out dust cleaning work when the coke dry quenching boiler is overhauled, and the production efficiency is not high enough.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a dry coke quenching system and dry coke quenching boiler export flue dust discharging device to solve the problem of piling up of dry coke quenching boiler flue dust. The specific technical scheme is as follows:

the embodiment of the first aspect of the application provides a dry quenching system, which comprises a material level monitoring device, a dry quenching boiler and a flue communicated with the dry quenching boiler, wherein an ash deposition part is arranged at the bottom of the flue and communicated with the flue, an ash outlet is formed in the ash deposition part and provided with an ash discharge valve, and the ash discharge valve is used for opening or plugging the ash outlet;

the material level monitoring device is electrically connected with the ash discharging valve and is used for monitoring the ash deposition amount in the ash deposition part and controlling the ash discharging valve to be in an open state or a closed state according to the ash deposition amount.

The embodiment of the application provides a dry quenching system, in the process of long-term operation of a dry quenching boiler, the flue gas generated by coking in the boiler contains dust, and after the dust enters a flue, part of the dust is deposited at the bottom of the flue due to gravity factors, so that an ash deposition part is arranged at the bottom of the flue, and an ash discharge valve is arranged in the ash deposition part.

In some embodiments of the application, the deposition portion is a cone-shaped structure, the deposition portion includes a first end and a second end, the first end is communicated with the flue, the sectional area of the first end is greater than that of the second end, and the ash outlet is disposed at the second end.

In some embodiments of the present application, the ash deposition portion is a multi-pyramid structure, the ash deposition portion includes a first end and a second end, the first end is communicated with the flue, the first end has a cross-sectional area larger than that of the second end, and the ash outlet is disposed at the second end.

In some embodiments of the present application, the level monitoring device comprises a level detection component and a control component;

the material level detection component is a pressure detection component, the pressure detection component is used for detecting the ash deposition amount according to a pressure value, and the control component is used for controlling the ash discharge valve to be in an opening state or a closing state according to a detection result of the pressure detection component;

or the material level detection component is a capacitance type detection component, the capacitance type detection component is used for detecting the ash deposition amount according to a capacitance value, and the control component is used for controlling the ash discharge valve to be in an opening state or a closing state according to a detection result of the material level detection component.

In some embodiments of the present application, the material level monitoring device includes a driving member, and the control part is used for controlling the ash discharge valve to be in an open state or a closed state through the driving member.

In some embodiments of this application, the driving piece is the motor, the motor includes output shaft and conveyer belt, the unloading valve includes pivot and blocking part, the blocking part is used for the shutoff the ash hole, the output shaft rotates to pass through the conveyer belt drives the pivot rotates, when the pivot rotates, is used for driving the blocking part is opened or the shutoff the ash hole.

In some embodiments of the present application, the dry quenching system further comprises an ash bin for storing dust generated during a coking process of the dry quenching system, the ash outlet is communicated with the ash bin through an ash discharge pipe, and the ash discharge pipe is used for introducing accumulated ash into the ash bin.

In some embodiments of the present application, the coke dry quenching system further comprises a dust collector, the dust collector is communicated with the coke dry quenching boiler through the flue, the dust collector is used for filtering and removing dust for flue gas generated by the coke dry quenching boiler, and the dust collector is communicated with the ash bin.

In some embodiments of the present application, the dust separator includes a first section connected to the dry quenching boiler, a second section connected to the first section, the second section having a cross-sectional area smaller than a cross-sectional area of the first section, the second section being in communication with the ash bin.

The embodiment of the second aspect of the application provides an ash discharging device for an outlet flue of a dry quenching boiler, which comprises an ash deposition part and a material level monitoring device, wherein the ash deposition part is arranged at the bottom of the flue, and the flue is used for being communicated with the dry quenching boiler;

the ash deposition part is communicated with the flue, an ash outlet is formed in the ash deposition part, an ash discharge valve is arranged at the ash outlet, and the ash discharge valve is used for opening or blocking the ash outlet;

the material level monitoring device is electrically connected with the ash discharging valve and is used for monitoring the ash deposition amount in the ash deposition part and controlling the ash discharging valve to be in an open state or a closed state according to the ash deposition amount.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

Fig. 1 is a structural diagram of a dry quenching system provided by an embodiment of the application;

FIG. 2 is a block diagram of a driving member and an ash discharge valve provided in an embodiment of the present application.

The reference numbers are as follows:

100: dry quenching boiler, 200: flue, 300: ash deposit, 310: ash outlet, 320: ash discharge pipe, 400: cinder valve, 410: rotating shaft, 420: impeller, 430: a housing, 500: level monitoring device, 510: driver, 520: output shaft, 530: conveyor belt, 540: level detection member, 600: ash bin, 700: dust remover, 710: first stage, 720: second segment, 730: and a third stage.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art based on the present application all belong to the protection scope of the present disclosure.

Referring to fig. 1, a first embodiment of the present application provides a dry quenching system, including: the system comprises a material level monitoring device 500, a dry quenching boiler 100 and a flue 200 communicated with the dry quenching boiler 100; the bottom of the flue 200 is provided with an ash deposition part 300, and the ash deposition part 300 is communicated with the flue 200; the ash deposition part 300 is provided with an ash outlet 310, the ash outlet 310 is provided with an ash discharge valve 400, and the ash discharge valve 400 is used for opening or sealing the ash outlet 310; the material level monitoring device 500 is electrically connected to the dust discharging valve 400, and the material level monitoring device 500 is used for monitoring the dust deposition amount in the dust deposition portion 300 and controlling the dust discharging valve 400 to be in an open state or a closed state according to the dust deposition amount.

In the coke dry quenching system provided by the embodiment of the application, in the process of long-term operation of the coke dry quenching boiler 100, the flue gas generated by coking in the coke dry quenching boiler 100 contains dust, and after the dust enters the flue 200, part of the dust is deposited at the bottom of the flue 200 due to gravity factors, so that the dust deposition part 300 is arranged at the bottom of the flue 200, and the dust discharge valve 400 is arranged in the dust deposition part 300. The coke dry quenching system monitors the ash deposition amount in the ash deposition part 300 by using the material level monitoring device 500, and when the ash deposition amount reaches a preset amount, the material level monitoring device 500 controls the ash discharge valve 400 to be opened in a mode of being electrically connected with the ash discharge valve 400, so that dust can be discharged through the ash outlet 310. Through the cooperation of the material level monitoring device 500 and the ash discharge valve 400, automatic ash removal can be realized, the manual labor is reduced, and the cost is saved.

The automatic monitoring and ash discharging mode is favorable for ensuring the smoothness of the flue 200 and the flowing of the circulating gas in the flue 200, and the automatic ash discharging can also avoid the situation that the coke dry quenching system needs to be stopped because of excessive dust, thereby improving the production efficiency of the coke dry quenching system.

In some embodiments, the soot deposition part 300 has a tapered structure, the soot deposition part 300 includes a first end and a second end, the first end is communicated with the flue 200, the first end has a larger cross-sectional area than the second end, and the soot outlet 310 is disposed at the second end. In this embodiment, the dust collecting portion 300 may have a conical structure, a first end of the dust collecting portion 300 is connected to the flue 200, a first end with a larger cross-sectional area is connected to the flue 200, a second end with a smaller cross-sectional area is located below the first end, and the dust collecting portion 300 has an inverted conical structure.

The sectional area of first end is greater than the sectional area of second end, then the side that deposition portion 300 extends to the second end by first end is the inclined plane, and the dust falls into in deposition portion 300 and is favorable to following first end cunning to the second end, and first end sectional area is great more to be favorable to collecting the dust, and second end sectional area is less to ash hole 310 sets up at the second end, and this is more favorable to falling into all sedimentary dust in ash hole 310.

In some embodiments, the dust collecting part 300 has a multi-pyramid structure, the dust collecting part 300 includes a first end and a second end, the first end is communicated with the flue 200, the first end has a larger cross-sectional area than the second end, and the dust outlet 310 is disposed at the second end. The dust collecting part 300 may be a multi-pyramid structure such as a triangular pyramid and a rectangular pyramid, a first end of the dust collecting part 300 is communicated with the flue 200, a first end with a larger sectional area is communicated with the flue 200, a second end with a smaller sectional area is arranged below the first end, and the dust collecting part 300 is in an inverted cone structure.

The sectional area of first end is greater than the sectional area of second end, then the side that deposition portion 300 extends to the second end by first end is the inclined plane, and the dust falls into in deposition portion 300 and is favorable to following first end cunning to the second end, and first end sectional area is great more to be favorable to collecting the dust, and second end sectional area is less to ash hole 310 sets up at the second end, and this is more favorable to falling into all sedimentary dust in ash hole 310.

In some embodiments, as shown in fig. 1, the level monitoring apparatus 500 includes a level detecting part 540 and a control part, the level detecting part (540) may be a pressure detecting part, the level detecting part (540) is used for detecting the amount of the ash deposition according to the pressure value, and the control part is used for controlling the ash discharge valve (400) to be in an open state or in a closed state according to the detection result of the detecting part.

Alternatively, the level detecting unit (540) may be a capacitance type detecting unit, the level detecting unit (540) may detect the amount of the ash deposited based on the capacitance value, and the control unit may control the ash discharge valve (400) to be in an open state or a closed state based on a detection result of the detecting unit.

When the pressure detection part is selected, the pressure detection part is arranged at the bottom of the dust deposition part 300, dust falls into the dust deposition part 300, the dust generates pressure on the pressure detection part due to the action of gravity, and the pressure detection part judges the dust deposition amount according to the pressure value. When the capacitance type detecting component is selected, the capacitance type detecting component is arranged in the flue 200 or the dust-depositing part 300, a solid capacitor can be formed by a fixed gap between a probe of the capacitance type detecting component and the inner wall of the dust-depositing part 300, when dust is accumulated and rises to submerge the probe, the capacitance between the probe and the inner wall of the dust-depositing part 300 is changed, and the capacitance type detecting component judges the change of the dust-depositing quantity.

The pressure detection component or the capacitance type detection component is arranged, so that the change of the accumulated ash amount can be detected in real time conveniently, and the control component controls the ash discharge valve 400 to be opened or closed in real time according to the change of the accumulated ash amount, thereby realizing automatic ash removal.

The Control unit may be a Programmable Logic Controller (PLC), or the Control unit may also be a Distributed Control System (DCS).

Referring to fig. 1 and 2, in some embodiments, the level monitoring device 500 includes a driving member 510, and the control unit is configured to control the ash discharge valve 400 to be in an open state or a closed state through the driving member 510. In this embodiment, the control unit sets a threshold in advance, controls the driving member 510 to drive the ash discharge valve 400 to be in the open state when the ash deposition amount reaches the threshold, and controls the ash discharge valve 400 to be in the closed state when the ash deposition amount does not reach the threshold.

Therefore, the material level monitoring device 500 can drive the ash discharge valve 400 to be opened or closed according to the change of the ash deposition amount by the automatic control driving part 510, so that the automatic ash removal work is convenient to realize, and the change of the ash deposition amount is not required to be checked manually in real time to carry out manual ash removal. And the material level monitoring device 500 automatically cleans ash according to the amount of accumulated ash, so that the accumulated ash in the ash accumulation part 300 is always in the set controllable range, and the phenomenon of excessive accumulated ash can be reduced.

In some embodiments, as shown in fig. 2, the driving member 510 is a motor, the motor includes an output shaft 520 and a conveyor belt 530, the dust valve 400 includes a rotating shaft 410 and a blocking portion, the blocking portion is used for blocking the dust outlet 310, the output shaft 520 can rotate to drive the rotating shaft 410 to rotate via the conveyor belt 530, and when the rotating shaft 410 rotates, the blocking portion is used for driving the blocking portion to open or block the dust outlet 310.

Specifically, as shown in fig. 1 and fig. 2, the ash discharge valve includes a housing 430, the housing 430 is connected to the ash outlet 310, the housing 430 defines an accommodating space, a blocking portion is disposed in the accommodating space, the blocking portion can be an impeller 420 that is sleeved on the rotating shaft 410 and synchronously rotates with the rotating shaft 410, when the output shaft 520 of the motor rotates, the rotating shaft 410 can be driven by a conveyor belt 530 to rotate, and the rotating shaft 410 drives the impeller 420 to rotate. The opening of the dust discharging valve 400 is realized by the continuous rotation of the impeller 420, when the dust discharging valve 400 is opened, the impeller 420 rotates continuously, the deposited dust falls into the gap between the two blades of the impeller 420 through the dust outlet 310 and rotates synchronously with the impeller 420, when the deposited dust rotates to the lower part of the impeller 420, the deposited dust falls off from the gap between the blades due to the gravity factor, and the deposited dust is discharged from the dust discharging valve 400 at the moment. When the ash deposition amount is gradually discharged by the ash discharge valve 400 to be lower than the ash deposition threshold value, the output shaft 520 of the motor stops, the rotating shaft 410 of the ash discharge valve 400 stops rotating, the impeller 420 stops rotating synchronously, at this time, the ash deposition still exists in the blade gap of the impeller 420 above the plane where the rotating shaft 410 is located, and the ash deposition, the impeller 420 and the shell together play a role in closing the flue 200.

Wherein, the impeller can be a closed impeller, a semi-open impeller or an open impeller; the blades can be in the shapes of flat blades, arc blades, airfoil blades and the like, and are not particularly limited in this embodiment.

In other embodiments, the blocking portion may also be a baffle (not shown in the drawings), and the baffle includes an open state and a closed state, in the open state of the baffle, the baffle is spaced from the ash outlet 310 or is at an angle, and the accumulated ash can be discharged from the ash outlet 310; when the shutter is closed, the shutter is attached to the ash hole 310, the shutter blocks the ash hole 310, and the rotation of the rotating shaft 410 can control the shutter to switch between the open state and the closed state.

In some embodiments, as shown in fig. 1, the dry quenching system further comprises an ash bin 600, the ash bin 600 is used for storing dust generated during the coking process of the dry quenching system, the ash outlet 310 is communicated with the ash bin 600 through an ash discharge pipe 320, and the ash discharge pipe 320 is used for introducing the accumulated ash into the ash bin 600. Dust enters the dust bin 600 from the dust outlet 310 through the dust discharge pipe 320 under the action of gravity, the dust generated in the coking process of the dry quenching system is stored in the dust bin 600, and the dust stored in the dust bin 600 is cleaned after reaching a certain amount.

In some embodiments, as shown in fig. 1, the dry quenching system further comprises a dust collector 700, the dust collector 700 is in communication with the dry quenching boiler 100 through the flue 200, the dust collector 700 is used for filtering and dedusting flue gas generated by the dry quenching boiler 100, and the dust collector 700 is in communication with the ash bin 600. In the production process of the coke dry quenching system, the flue gas contains a lot of smoke dust, the dust remover 700 is used for removing dust from the flue gas, the dust content entering the fan is reduced, the abrasion to the fan is reduced, the flue gas after dust removal can meet the emission requirement, the dust remover 700 is communicated with the dust bin 600, and the dust filtered in the dust remover 700 is collected to the dust bin 600.

In some embodiments, as shown in fig. 1, the dust separator 700 includes a first section 710 connected to the dry quenching boiler 100, a second section 720 connected to the first section 710, the second section 720 having a cross-sectional area smaller than the cross-sectional area of the first section 710, the second section 720 being in communication with the ash bin 600. The first section 710 is a filtering section of the dust collector 700 and is used for separating and filtering dust, the second section 720 is arranged below the first section 710 and is used for collecting the dust separated by the first section 710, the second section 720 can be of a conical structure, the cross-sectional area of the second section 720 is gradually reduced from top to bottom, the cross-sectional area of the upper end of the second section 720 is large, the dust separated by the first section 710 can be received, and the cross-sectional area of the second section 720 is gradually reduced from top to bottom, so that the dust can be collected and concentrated. The bottom of the second section 720 is communicated with the dust bin 600, dust enters the dust bin 600 from the bottom of the second section 720, and the dust bin 600 collects and stores the separated dust. The dust collector 700 and the dust deposition part 300 share one dust bin 600, which is beneficial to reducing the use of components and saving the cost.

In some embodiments, as shown in FIG. 1, the duster 700 further comprises a third section 730, the third section 730 is connected to the second section 720, the third section 730 has a smaller cross-sectional area than the second section 720, and the second section 720 communicates with the ash bin 600 through the third section 730. In the present embodiment, the sectional area of the third section 730 is smaller, and the dispersion area of the dust discharged from the third section 730 can be reduced, thereby reducing the possibility of the dust flying. The third section 730 can be a tubular structure, one end of the third section 730 is communicated with the bottom end of the second section 720, the other end of the third section 730 is communicated with the ash bin 600, the tubular structure is more flexible in equipment arrangement, and can be inserted into the ash bin 600, so that the overflow of dust is reduced.

In another embodiment, the dust outlet 310 is communicated with the second section 720 through the dust discharging pipe 320, and dust enters the dust bin through the second section 720 and the third section 730. The deposited ash enters the ash discharge pipe 320 from the ash discharge port 310, enters the second section 720 through the second section 720 of the dust collector 700, enters the third section 730 through the gravity, and finally enters the ash bin 600. Or, the ash outlet 310 is communicated with the third section 730 through the ash discharge pipe 320, the deposited ash enters the ash discharge pipe 320 from the ash discharge outlet 310, and under the action of gravity, the deposited ash enters the third section 730 and directly enters the ash bin 600 from the third section 730.

The embodiment of the second aspect of the present application provides an ash discharging device for an outlet flue of a coke dry quenching boiler, as shown in fig. 1, comprising an ash deposition part 300 and a material level monitoring device 500, wherein the ash deposition part 300 is arranged at the bottom of the flue 200, and the flue 200 is used for communicating with the coke dry quenching boiler 100. The dust deposition part 300 is communicated with the flue 200, the dust deposition part 300 is provided with an ash outlet 310, the ash outlet 310 is provided with an ash discharge valve 400, and the ash discharge valve 400 is used for opening or blocking the ash outlet 310; the material level monitoring device 500 is electrically connected to the dust discharging valve 400, and the material level monitoring device 500 is used for monitoring the dust deposition amount in the dust deposition portion 300 and controlling the dust discharging valve 400 to be in an open state or a closed state according to the dust deposition amount.

According to the dust discharging device for the outlet flue of the coke dry quenching boiler, in the process that the coke dry quenching boiler 100 runs for a long time, dust is contained in smoke generated by coking in the coke dry quenching boiler 100, and after the dust enters the flue 200, part of the dust is deposited at the bottom of the flue 200 due to gravity factors, so that the device is required to be cleaned in real time in order to prevent the device from being shut down due to excessive dust accumulation.

The embodiment of the application arranges the dust deposition part 300 and the material level monitoring device 500, and arranges the dust discharging valve 400 in the dust deposition part 300. The material level monitoring device 500 monitors the accumulated ash amount in the ash accumulation part 300, when the accumulated ash amount reaches a preset amount, the material level monitoring device 500 controls the ash discharge valve 400 to be opened through the mode of being electrically connected with the ash discharge valve 400, so that the dust can be discharged through the ash outlet 310, and through the cooperation of the material level monitoring device 500 and the ash discharge valve 400, automatic ash removal can be realized, the manual labor is reduced, and the cost is saved.

The mode of automatically monitoring the ash deposition amount and automatically discharging ash is favorable for ensuring the smoothness of the flue 200 and the flow of circulating gas in the flue 200, and the automatic ash discharge can also avoid the condition of forced shutdown caused by excessive dust, thereby improving the production efficiency of the dry quenching system.

In the related art, the flue 200 of the dry quenching system has no ash discharge system, and after long-time operation, the coke needs to enter the outlet flue 200 manually for ash removal during boiler maintenance. This results in that the function of discharging the deposited ash in the outlet flue 200 of the dry quenching boiler 100 cannot be realized during the operation of the dry quenching system, but during the long-term operation, the deposited ash is inevitably generated in the outlet flue 200 of the dry quenching boiler 100, which may cause the increase of the flow resistance of the circulating gas in the dry quenching system, and in some abnormal operation conditions, the deposited ash may also cause the dry quenching system to be forced to be stopped for maintenance. In the application, the material level monitoring device 500 is arranged in the outlet flue 200 of the dry quenching boiler 100, the dust deposition condition in the outlet flue 200 of the dry quenching boiler 100 is monitored in real time, and when the dust deposition reaches a certain degree, the dust discharging valve 400 on the outlet flue 200 of the dry quenching boiler 100 is automatically opened, so that the dust deposition in the outlet flue 200 of the dry quenching boiler 100 is automatically discharged. The discharged ash enters the second section 720 or the third section 730 of the secondary dust remover 700 of the dry quenching device through the ash discharge pipe 320, an air pump is arranged at the third section 730, and the air pump is started to send the ash to an ash bin through pneumatic transmission.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. A dry quenching system, comprising: the system comprises a material level monitoring device (500), a dry quenching boiler (100) and a flue (200) communicated with the dry quenching boiler (100);

the bottom of the flue (200) is provided with an ash deposition part (300), the ash deposition part (300) is communicated with the flue (200), and the ash deposition part (300) is provided with an ash outlet (310); the ash outlet (310) is provided with an ash discharge valve (400), and the ash discharge valve (400) is used for opening or sealing the ash outlet (310);

the device comprises a material level monitoring device (500), the material level monitoring device (500) is electrically connected with the ash discharge valve (400), the material level monitoring device (500) is used for monitoring the ash deposition amount in the ash deposition part (300), and the ash discharge valve (400) is in an opening state or a closing state according to the ash deposition amount control.

2. The dry quenching system of claim 1, wherein the ash deposit (300) is a tapered structure, the ash deposit (300) comprising a first end and a second end, the first end being in communication with the flue (200), the first end having a cross-sectional area greater than a cross-sectional area of the second end, the ash exit (310) being disposed at the second end.

3. The dry quenching system of claim 1, wherein the ash deposit (300) is a multi-pyramid shaped structure, the ash deposit (300) comprising a first end and a second end, the first end being in communication with the chimney (200), the first end having a larger cross-sectional area than the second end, the ash exit (310) being disposed at the second end.

4. The dry quenching system as claimed in any of claims 1-3, wherein the level monitoring device (500) comprises a level detection component (540) and a control component;

the material level detection component (540) is a pressure detection component, the pressure detection component is used for detecting the ash deposition amount according to a pressure value, and the control component is used for controlling the ash discharge valve (400) to be in an opening state or a closing state according to a detection result of the pressure detection component;

or the material level detection component (540) is a capacitance type detection component, the capacitance type detection component is used for detecting the ash deposition amount according to a capacitance value, and the control component is used for controlling the ash discharge valve (400) to be in an opening state or a closing state according to a detection result of the material level detection component (540).

5. The dry quenching system as claimed in claim 4, characterized in that the level monitoring device (500) comprises a drive (510), and the control means is configured to control the ash discharge valve (400) to be in an open state or a closed state by means of the drive (510).

6. The dry quenching system as claimed in claim 5, wherein the driving member (510) is a motor, the motor comprises an output shaft (520) and a conveyor belt (530), the ash discharge valve (400) comprises a rotating shaft (410) and a blocking portion, the blocking portion is used for blocking the ash outlet (310), the rotating shaft (410) can be driven by the conveyor belt (530) to rotate by the rotating shaft (520), and the rotating shaft (410) is used for driving the blocking portion to open or block the ash outlet (310) when rotating.

7. The dry quenching system as claimed in any one of claims 1 to 3, further comprising an ash bin (600), the ash bin (600) being used for storing dust generated by a dry quenching system coking process, the ash outlet (310) being in communication with the ash bin (600) through an ash discharge pipe (320), the ash discharge pipe (320) being used for introducing ash deposits into the ash bin (600).

8. The dry quenching system of claim 7, further comprising a dust separator (700), the dust separator (700) being in communication with the dry quenching boiler (100) through the flue (200), the dust separator (700) being for filtering dust for flue gas generated by the dry quenching boiler (100), the dust separator (700) being in communication with the ash bin (600).

9. The dry quenching system of claim 8, wherein the dust separator (700) comprises a first section (710) connected to the dry quenching boiler (100), a second section (720) connected to the first section (710), the second section (720) having a smaller cross-sectional area than the first section (710), the second section (720) being in communication with the ash bin (600).

10. The dust discharging device for the outlet flue of the dry quenching boiler is characterized by comprising a dust deposition part (300) and a material level monitoring device (500), wherein the dust deposition part (300) is arranged at the bottom of the flue (200), and the flue (200) is used for being communicated with the dry quenching boiler (100);

the ash deposition part (300) is communicated with the flue (200), the ash deposition part (300) is provided with an ash outlet (310), the ash outlet (310) is provided with an ash discharge valve (400), and the ash discharge valve (400) is used for opening or sealing the ash outlet (310); the material level monitoring device (500) is electrically connected with the ash discharge valve (400), and the material level monitoring device (500) is used for monitoring the ash deposition amount in the ash deposition part (300) and controlling the ash discharge valve (400) to be in an opening state or a closing state according to the ash deposition amount.

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