A dry quenching boiler and dry quenching system

Abstract

The utility model embodiment provides a kind of dry quenching boiler and dry quenching system, and dry quenching boiler includes flue gas passage, evaporator and coal economizer.At least one heating surface in evaporator and coal economizer is light pipe;Or, at least one heating surface in evaporator and coal economizer is finned tube, and finned tube includes tube body and multiple pairs of fins, and along the extension direction of tube body, multiple pairs of fins are sequentially and spacedly arranged on the outer wall of tube body, and each pair of fins is arranged on the two sides of the outer wall of tube body, and there is gap between each pair of fins.The bottom of tail passage is provided with ash bucket, and the bottom of ash bucket is provided with ash valve.The heating surface of evaporator and coal economizer is light pipe or H type finned tube, reduces the probability that floccus is accumulated in the heating surface of evaporator and coal economizer.Floccus can be discharged after entering tail passage, so as to reduce floccus blockage problem, improve the safety and stability of dry quenching boiler operation.

Description

Technical Field

[0001] This utility model relates to the field of dry quenching technology, and in particular to a dry quenching boiler and a dry quenching system. Background Technology

[0002] In the production process of heat recovery coke ovens, a large amount of flocculent fibrous material is generated during the dry quenching process of coke. Currently, some dry quenching systems use gravity dust removal in the primary dust removal stage. This dust removal technology has the inherent defect of low dust removal efficiency and cannot effectively intercept the aforementioned flocculent fibrous material, causing it to enter the dry quenching boiler system with the circulating gas.

[0003] Upon entering the boiler, the flocculent fibrous material easily adheres and accumulates on the surface of the heated pipes, forming a bridging-like aggregate structure that is difficult to be carried away by the circulating gas. In the boiler outlet flue area, influenced by the airflow characteristics, a mainstream zone forms at the outlet end due to the continuous high-speed airflow, while dead zones easily form in the distant area far from the outlet. The flocculent agglomerates formed by the agglomeration of the flocculent fibrous material preferentially deposit in these dead zones and gradually expand to the surrounding areas over time.

[0004] When ash buildup is severe, flocculent material can completely cover the economizer's heating surface, leading to a sharp increase in boiler system pressure drop and a significant decrease in heat exchange efficiency. Localized ash accumulation causes uneven temperature distribution on the heating surface, increasing temperature differences and easily inducing cracks due to thermal stress, posing a serious threat to the safe and stable operation of the dry quenching system. Especially when the dry quenching boiler operates at low loads for extended periods, the reduced flue gas velocity makes it even more difficult for the flocculent material to be carried away by the circulating gas, exacerbating the accumulation problem and further aggravating the adverse effects on the safety and stability of the boiler system. Utility Model Content

[0005] The purpose of this utility model embodiment is to provide a dry quenching boiler and dry quenching system to reduce the problem of flocculent blockage and improve its operational safety and stability. The specific technical solution is as follows:

[0006] A dry quenching coke boiler, comprising:

[0007] flue gas passage;

[0008] Evaporator;

[0009] An economizer is provided, with the evaporator and the economizer sequentially arranged within the flue gas passage along the flue gas flow direction; wherein,

[0010] At least one of the evaporator and the economizer has a bare tube as its heating surface; or, at least one of the evaporator and the economizer has a finned tube as its heating surface. The finned tube includes a tube body and multiple pairs of fins. Along the extension direction of the tube body, multiple pairs of fins are arranged sequentially and at intervals on the outer wall of the tube body, and each pair of fins is arranged on both sides of the outer wall of the tube body, with a gap between each pair of fins.

[0011] The tail section of the flue gas passage extends from top to bottom, and an ash hopper is provided at the bottom of the tail section. Along the first horizontal direction, the tail section includes a first side wall and a second side wall on both sides, and the ash hopper includes a first ash hopper wall and a second ash hopper wall on both sides. The first ash hopper wall and the first side wall are on the same side, and the second ash hopper wall and the second side wall are on the same side.

[0012] The first sidewall is provided with a flue gas outlet, the second sidewall is connected to the second ash hopper wall, and the bottom of the ash hopper is provided with an ash discharge valve.

[0013] In some embodiments, it also includes:

[0014] The ash discharge control component includes: a first level monitor, a second level monitor, and a controller. The first level monitor is located at the low position of the ash hopper and is used to monitor whether there is ash at the low position of the ash hopper. The second level monitor is located at the high position of the ash hopper and is used to monitor whether there is ash at the high position of the ash hopper.

[0015] The ash discharge valve is an electrically controlled valve;

[0016] The controller is electrically connected to the first level monitor, the second level monitor, and the electrically controlled valve. When the first level monitor detects that there is no ash at the low level of the ash hopper, the controller closes the electrically controlled valve. When the second level monitor detects that there is ash at the high level of the ash hopper, the controller opens the electrically controlled valve.

[0017] In some embodiments, it also includes:

[0018] The alarm component includes a third level monitor and an alarm. The third level monitor is disposed on the second side wall and is located below the economizer and above the ash hopper. It is used to monitor whether ash material is accumulated above the ash hopper.

[0019] The alarm is electrically connected to the third level monitor. When the third level monitor detects ash accumulating above the ash hopper, it controls the alarm to sound.

[0020] In some embodiments, the first level monitor, the second level monitor, and the third level monitor are all inclined downwards.

[0021] In some embodiments, the electrically controlled valve is a rotary valve.

[0022] In some embodiments, the lower part of the second sidewall is inclined toward the centerline of the tail channel.

[0023] In some embodiments, the centerline of the ash hopper is located on the side of the centerline of the tail passage closer to the flue gas outlet.

[0024] In some embodiments, the ash hoppers are at least two arranged side by side along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction.

[0025] In some embodiments, it also includes:

[0026] Multiple soot blowers are respectively installed above the evaporator and the economizer.

[0027] A dry quenching system, comprising:

[0028] Coke ovens and the aforementioned dry quenching coke boilers.

[0029] The dry quenching boiler and dry quenching system provided in this embodiment of the utility model include a flue gas passage, an evaporator, and an economizer. The evaporator and economizer are sequentially arranged within the flue gas passage along its flow direction. At least one of the heating surfaces of the evaporator and economizer is a bare tube; or, at least one of the heating surfaces of the evaporator and economizer is a finned tube, comprising a tube body and multiple pairs of fins. Along the extension direction of the tube body, the multiple pairs of fins are sequentially and spaced apart on the outer wall of the tube body, with each pair of fins located on both sides of the outer wall of the tube body, and a gap between each pair of fins. The tail section of the flue gas passage extends from top to bottom, and an ash hopper is provided at the bottom of the tail section. Along a first horizontal direction, the two sides of the tail section include a first sidewall and a second sidewall. The two sides of the ash hopper include opposing first ash hopper walls and second ash hopper walls, with the first ash hopper wall and the first sidewall on the same side, and the second ash hopper wall and the second sidewall on the same side. The first side wall is provided with a flue gas outlet, the second side wall is connected to the second ash hopper wall, and the bottom of the ash hopper is provided with an ash discharge valve.

[0030] The technical solution provided in this application, on the one hand, optimizes the structure of the heating surface. The heating surface of the evaporator and economizer is a bare tube or an H-shaped finned tube (the finned tube includes a tube body and multiple pairs of fins. Along the extension direction of the tube body, multiple pairs of fins are arranged sequentially and at intervals on the outer wall of the tube body, and each pair of fins is arranged on both sides of the outer wall of the tube body, with gaps between each pair of fins). This significantly reduces the tendency of flocculents to adhere, stick, and accumulate on the heating surface of the evaporator and economizer, thereby reducing the accumulation of blockages from the source, reducing the bridging of flocculents on the heating surface, and reducing the probability of flocculents accumulating on the heating surface of the evaporator and economizer. On the other hand, an ash hopper is installed at the bottom of the tail channel. After entering the tail channel, the flocculent material can flow from top to bottom and be deposited in the ash hopper. The ash hopper is used to collect and store the flocculent agglomerates that fall off from the flue gas channel wall and dead zone. The flocculent material deposited in the ash hopper can be discharged by opening the ash discharge valve, thereby reducing the total amount of flocculent material in the flue gas channel, thus reducing the problem of flocculent material blockage and improving the safety and stability of the dry quenching coke boiler operation.

[0031] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0033] Figure 1 A partial structural schematic diagram of a dry quenching coke boiler provided in an embodiment of this application;

[0034] Figure 2 for Figure 1 A schematic diagram of the dry quenching coke boiler shown in section A;

[0035] Figure 3 for Figure 1 The diagram shows the main view of the finned tube structure of the dry quenching coke boiler.

[0036] Figure 4 for Figure 3 The diagram shows a schematic left view of the finned tube structure of a dry quenching coke boiler.

[0037] Figure 5 for Figure 1 The diagram shows the electrical connection structure of the ash discharge control component of the dry quenching coke boiler.

[0038] Figure 6 for Figure 1The diagram shows the electrical connection structure of the alarm component of the dry quenching coke boiler.

[0039] The attached figures are labeled as follows:

[0040] Flue gas passage 1, tail passage 11, first side wall 111, second side wall 112, finned tube 2, tube body 21, multiple pairs of fins 22, ash hopper 3, first ash hopper wall 31, second ash hopper wall 32, flue gas outlet 113, ash discharge valve 4, electrically controlled valve 41, ash discharge control assembly 5, first material level monitor 51, second material level monitor 52, controller 53, alarm assembly 6, third material level monitor 61, alarm 62.

[0041] First horizontal direction X, second horizontal direction Y. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art based on this application are within the protection scope of the present utility model.

[0043] During the operation of a dry quenching system, the accumulation of flocculent material can completely cover the economizer's heating surface, leading to a sharp increase in boiler system pressure drop and a significant decrease in heat exchange efficiency. Localized ash accumulation causes uneven temperature distribution on the heating surface, increasing temperature differences and easily inducing cracks due to thermal stress, posing a serious threat to the safe and stable operation of the dry quenching system.

[0044] Figure 1 This is a partial structural diagram of a dry quenching coke boiler provided in an embodiment of this application. Figure 2 for Figure 1 The diagram shown is a schematic representation of the dry quenching coke boiler along direction A. Figure 3 for Figure 1 The diagram shows the front view of the finned tube structure of the dry quenching coke boiler. Figure 4 for Figure 3 The diagram shown is a left-side view of the finned tube structure of a dry quenching coke boiler. Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this application proposes a dry quenching coke boiler, including a flue gas passage 1, an evaporator, and an economizer.

[0045] Along the flue gas flow direction of flue gas passage 1, an evaporator and an economizer are sequentially arranged within the flue gas passage 1. At least one of the heating surfaces of the evaporator and the economizer is a bare tube; or, at least one of the heating surfaces of the evaporator and the economizer is a finned tube 2. The finned tube 2 includes a tube body 21 and multiple pairs of fins 22. Along the extension direction of the tube body 21, multiple pairs of fins 22 are sequentially and spaced apart on the outer wall of the tube body 21, and each pair of fins 22 is located on both sides of the outer wall of the tube body 21, with a gap between each pair of fins 22. The tail passage 11 of the flue gas passage 1 extends from top to bottom. An ash hopper 3 is provided at the bottom of the tail passage 11. Along the first horizontal direction X, the two sides of the tail passage 11 include a first side wall 111 and a second side wall 112. The two sides of the ash hopper 3 include a first ash hopper wall 31 and a second ash hopper wall 32, which are opposite to each other. The first ash hopper wall 31 and the first side wall 111 are on the same side, and the second ash hopper wall 32 and the second side wall 112 are on the same side. The first side wall 111 is provided with a flue gas outlet 113, the second side wall 112 is connected to the second ash hopper wall 32, and the bottom of the ash hopper 3 is provided with an ash discharge valve 4.

[0046] The technical solution provided in this application embodiment, on the one hand, optimizes the structure of the heating surface, so that the heating surface of the evaporator and economizer is a bare tube or an H-shaped finned tube 2 (the finned tube 2 includes a tube body 21 and multiple pairs of fins 22. Along the extension direction of the tube body 21, multiple pairs of fins 22 are arranged sequentially and at intervals on the outer wall of the tube body 21, and each pair of fins 22 is arranged on both sides of the outer wall of the tube body 21, and there is a gap between each pair of fins 22). This significantly reduces the tendency of flocculents to adhere, stick and accumulate on the heating surface of the evaporator and economizer, reduces the accumulation of blockages from the source, reduces the bridging of flocculents on the heating surface, and reduces the probability of flocculents accumulating on the heating surface of the evaporator and economizer. On the other hand, an ash hopper 3 is provided at the bottom of the tail channel 11. After entering the tail channel 11, the flocculent material can flow from top to bottom and be deposited in the ash hopper 3. This is used to collect and store the flocculent agglomerates that fall off from the flue wall and dead zone of the flue gas channel 1. The flocculent material deposited in the ash hopper 3 can be discharged by opening the ash discharge valve 4, thereby reducing the total amount of flocculent material in the flue gas channel 1, thus reducing the problem of flocculent material blockage and improving the safety and stability of the dry quenching coke boiler operation.

[0047] Figure 5 for Figure 1 The diagram shows the electrical connection structure of the ash discharge control component of the dry quenching coke boiler. Figure 5As shown, further embodiments of this application propose that the dry quenching coke boiler includes an ash discharge control component 5, which consists of a first level monitor 51, a second level monitor 52, and a controller 53. The first level monitor 51 is installed at the low level (area) of the ash hopper 3 to detect in real time whether there is ash (accumulation) at the low level; the second level monitor 52 is installed at the high level (area) of the ash hopper 3 to monitor whether there is ash (accumulation) at the high level. The ash discharge valve 4 is an electrically controlled valve 41, and the controller 53 is connected to the first level monitor 51, the second level monitor 52, and the electrically controlled valve 41 through electrical circuits. When the first level monitor 51 sends a signal that there is no ash at the low level (detecting that there is no ash at the low level of the ash hopper 3), the controller 53 closes the electrically controlled valve 41; when the second level monitor 52 detects that there is ash at the high level, the controller 53 automatically opens the electrically controlled valve 41 to perform the ash discharge operation.

[0048] Specifically, the electrically controlled valve 41 is preferably a rotary ash discharge valve 4, which has good sealing performance and can prevent external air from entering the dry quenching boiler.

[0049] Combination Figure 1 and Figure 2 As shown, specifically, the first level monitor 51 and the second level monitor 52 are installed at an angle downwards, preferably at an angle of 30°-60°, in order to reduce the probability of flocculation at the sensing ends of the first level monitor 51 and the second level monitor 52, and to maintain the detection sensitivity at the ends of the first level monitor 51 and the second level monitor 52.

[0050] Therefore, this technical solution achieves precise control of the ash removal process through the synergistic effect of dual-level monitoring (low and high levels) and an automatic control system. Its working principle is as follows: the high-level monitor (second level monitor 52) triggers an ash removal start signal to prevent ash accumulation, which could affect flue gas flow and heat exchange on the heating surface; the low-level monitor (first level monitor 51) issues a stop signal, automatically closing the electrically controlled valve 41 after ash removal. Compared to traditional timed ash removal or manual observation methods, this solution effectively solves the problem of flue blockage caused by untimely ash removal, while avoiding heat loss due to excessive ash removal. Automated control reduces manual intervention, lowering the frequency and intensity of manual entry into hazardous areas for inspection or cleaning, thus improving operational safety. The systematic design reduces the number of unplanned shutdowns for maintenance, improving equipment uptime and production efficiency.

[0051] In specific implementation, the ash discharge valve 4 is not limited to an electrically controlled valve 41, but can also be a manual valve, which is operated manually to discharge ash.

[0052] Figure 6 for Figure 1 The diagram shows the electrical connection structure of the alarm component of the dry quenching coke boiler. Figure 6As shown, further embodiments of this application propose adding an alarm component 6 to the dry quenching coke boiler. This alarm component 6 includes a third level monitor 61 and an alarm 62. The third level monitor 61 is installed on the second side wall 112, located below the economizer and above the ash hopper 3, and is used to monitor whether ash material accumulates above the ash hopper 3. The alarm 62 is electrically connected to the third level monitor 61. When the third level monitor 61 detects ash material accumulating above the ash hopper 3, the alarm 62 sounds an alarm.

[0053] Combination Figure 1 and Figure 2 As shown, specifically, the third level monitor 61 is installed at an angle downwards, preferably at an angle of 30°-60°, in order to reduce the probability of flocculation at the sensing end of the third level monitor 61 and maintain the detection sensitivity at the end of the third level monitor 61.

[0054] Alarm 62 can be an audible and visual alarm 62, which can be installed in a location that is easy for operators to detect in a timely manner. For example, the alarm signal can be connected to the boiler control system to achieve linkage control with the ash discharge control component 5.

[0055] This technical solution, by adding a high-level monitoring point (third level monitor 61), can promptly detect abnormal accumulation of flocculent fibrous material in the flue gas passage 1. When the flocculent material begins to accumulate below the economizer and exceeds the high level of the ash hopper 3, reaching the high-level monitoring point, the third level monitor 61 can detect the material accumulation signal and trigger the alarm 62. Therefore, if the ash discharge control component 5 malfunctions, operators can promptly take ash removal measures to prevent further deterioration of the ash accumulation problem. Compared with existing technologies that rely solely on ash hopper 3 level monitoring, this solution provides early warning of ash accumulation problems, effectively solving issues such as increased boiler pressure drop and decreased heat exchange efficiency caused by flocculent material accumulation. Simultaneously, early warning reduces the risk of thermal stress cracking caused by localized ash accumulation, ensuring the safe and stable operation of the boiler system.

[0056] like Figure 1 and Figure 2 As shown, specifically, the lower part of the second sidewall 112 is inclined towards the centerline of the tail channel 11, that is, the lower region of the second sidewall 112 forms a certain angle relative to the vertical direction, and this angle is towards the centerline of the tail channel 11. This angle can be set to a range of 40° to 60°. The inclination can be achieved by designing the lower part of the second sidewall 112 as a sloping structure or by using an arc-shaped transition section. This inclined structure can be formed by welding steel plates.

[0057] Therefore, this technical solution effectively improves flue gas flow characteristics by forming an inclined structure towards the centerline at the lower part of the second sidewall 112. When flue gas containing flocculent fibrous material passes through the tail channel 11, the inclined sidewall guides the airflow towards the central area, reducing the stagnation of flue gas near the sidewall. Specifically, the guiding effect of the inclined structure promotes the sliding of deposited flocculent material along the inclined surface towards the ash hopper 3 under gravity, preventing accumulation in the sidewall area. Compared with the vertical sidewall structure in the prior art, this solution significantly reduces the probability of flow dead zones, thereby alleviating the problems of increased boiler pressure drop and decreased heat exchange efficiency caused by flocculent material accumulation.

[0058] Furthermore, embodiments of this application also propose that the centerline of the ash hopper 3 is located on the side of the centerline of the tail passage 11 near the flue gas outlet 113.

[0059] Specifically, the centerline of the ash hopper 3 is offset from the centerline of the tail channel 11, with the offset direction pointing towards the side where the flue gas outlet 113 is located. This arrangement provides space for the inclined second sidewall, provided that the first ash hopper wall 31 and the second ash hopper wall 32 on both sides of the ash hopper 3 have the same inclination angle. Furthermore, the ash hopper 3 can also employ an asymmetrical structural design.

[0060] To address this, the proposed technical solution shifts the centerline of the ash hopper 3 towards the flue gas outlet 113, making it easier for the flocculent fibrous material accumulated at the bottom of the tail channel 11 to slide into the ash hopper 3. Due to the continuous airflow at the flue gas outlet 113, the flocculent material moves towards the ash hopper 3 under the combined action of gravity and airflow, effectively avoiding the problem of flocculent material accumulating on the side far from the outlet, as seen in traditional symmetrical structures. Compared to existing technologies, this structure significantly improves ash removal efficiency, especially solving the problem of ash accumulation caused by reduced flue gas velocity under low-load conditions, thus reducing the frequency of manual cleaning and maintenance costs.

[0061] Furthermore, this application also proposes that, along the second horizontal direction Y, at least two ash hoppers 3 are arranged in parallel, with the second horizontal direction Y being perpendicular to the first horizontal direction X.

[0062] Specifically, the ash hoppers 3 can be arranged in a symmetrical or asymmetrical configuration. In one embodiment, two ash hoppers 3 are symmetrically arranged along the second horizontal direction Y at the bottom of the tail channel 11, and each ash hopper 3 is equipped with an independent ash discharge valve 4. In another embodiment, three ash hoppers 3 are arranged in a linear array, with equal spacing between adjacent hoppers. The cross-sectional shape of the ash hoppers 3 can be rectangular or trapezoidal, with a trapezoidal cross-section facilitating ash material sliding.

[0063] Therefore, the technical solution achieves the following technical effects through the multi-hopper parallel arrangement structure: First, the multi-hopper parallel arrangement structure is beneficial to reducing the height of the ash hoppers 3, thereby reducing the height space occupied by the ash hoppers 3. Second, multiple ash hoppers 3 can form a zoned ash discharge mode. When flocculent accumulation occurs in a local area, the ash discharge valve 4 in the corresponding area can be separately opened for targeted cleaning, so as to avoid energy waste caused by overall ash discharge.

[0064] Further, according to the embodiments of the present application, it is also provided that a plurality of soot blowers are arranged in the CDQ boiler, which are respectively installed above the evaporator and the economizer.

[0065] The technical solution can effectively remove flocculent fibrous substances bonded on the surface of the tube bundles of the evaporator and the economizer by arranging a soot blowing device in the upper heating surface area. When the boiler is in operation, the soot blowers operate periodically or as required, and the bonding structure of the ash deposit layer is destroyed by the soot blowers, so that the flocculent substances fall off from the heating surface and are carried away by flue gas. This active ash removal method solves the problem of fibrous substance accumulation that is difficult to be handled by traditional gravity dust removal, and avoids the reduction of heat exchange efficiency of the heating surface and the risk of thermal stress cracks caused by ash accumulation. Especially under low-load working conditions, increasing the soot blowing frequency can effectively compensate for the weakening of ash removal effect caused by the reduction of flue gas flow rate, and maintain the stable operation of the boiler system.

[0066] A coke dry quenching system provided by an embodiment of the present application includes the coke dry quenching boiler of the above embodiment.

[0067] The coke dry quenching system effectively solves the technical problem of flocculent fibrous substance accumulation in the boiler by optimizing the boiler structure and ash discharge control. Among them, the inclined side wall and the eccentric hopper design promote ash material flow, multi-stage material level monitoring realizes accurate ash discharge, and the alarm assembly 6 gives early warning of accumulation risk in time. Compared with the prior art, the system significantly improves the operation stability of the coke dry quenching system, reduces the risk of heating surface blockage, and is particularly suitable for high-temperature flue gas working conditions containing flocculent fibrous substances. Through automatic control of the ash discharge process, the ash discharge efficiency is ensured, and potential safety hazards in manual operation are avoided.

[0068] The coke dry quenching system of the present application is not only applicable to coke dry quenching boilers matched with heat-recovery coke ovens, but also applicable to other boilers that are prone to ash accumulation at the bottom.

[0069] The above description is only the preferred embodiments of the present utility model, and is not intended to limit the protection scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall all be included in the protection scope of the present utility model.

Claims

1. A dry quenching coke boiler, characterized in that, include: Flue gas passage (1); Evaporator; An economizer is provided, along the flue gas flow direction of the flue gas passage (1), wherein the evaporator and the economizer are sequentially arranged within the flue gas passage (1); wherein, At least one of the heating surfaces of the evaporator and the economizer is a bare tube; or, at least one of the heating surfaces of the evaporator and the economizer is a finned tube (2), the finned tube (2) includes: a tube body (21) and multiple pairs of fins (22), along the extension direction of the tube body (21), multiple pairs of fins (22) are arranged sequentially and at intervals on the outer wall of the tube body (21), and each pair of fins (22) is arranged on both sides of the outer wall of the tube body (21), and there is a gap between each pair of fins (22); The tail passage (11) of the flue gas passage (1) extends from top to bottom. A hopper (3) is provided at the bottom of the tail passage (11). Along the first horizontal direction (X), the tail passage (11) includes a first side wall (111) and a second side wall (112) on both sides. The hopper (3) includes a first hopper wall (31) and a second hopper wall (32) on both sides. The first hopper wall (31) and the first side wall (111) are on the same side. The second hopper wall (32) and the second side wall (112) are on the same side. The first sidewall (111) is provided with a flue gas outlet (113), the second sidewall (112) is connected to the second ash hopper wall (32), and the bottom of the ash hopper (3) is provided with an ash discharge valve (4).

2. The dry quenching coke boiler according to claim 1, characterized in that, Also includes: The ash discharge control component (5) includes: a first level monitor (51), a second level monitor (52), and a controller (53). The first level monitor (51) is located at the low position of the ash hopper (3) and is used to monitor whether there is ash material at the low position of the ash hopper (3). The second level monitor (52) is located at the high position of the ash hopper (3) and is used to monitor whether there is ash material at the high position of the ash hopper (3). The ash discharge valve (4) is an electrically controlled valve (41); The controller (53) is electrically connected to the first level monitor (51), the second level monitor (52) and the electric control valve (41). When the first level monitor (51) detects that there is no ash in the low level of the ash hopper (3), the controller (53) closes the electric control valve (41). When the second level monitor (52) detects that there is ash in the high level of the ash hopper (3), the controller (53) opens the electric control valve (41).

3. The dry quenching coke boiler according to claim 2, characterized in that, Also includes: The alarm component (6) includes a third level monitor (61) and an alarm (62). The third level monitor (61) is disposed on the second side wall (112). The third level monitor (61) is located below the economizer and above the ash hopper (3) and is used to monitor whether ash material is accumulated above the ash hopper (3). The alarm (62) and the third level monitor (61) are electrically connected. When the third level monitor (61) detects that ash material is accumulated above the ash hopper (3), it controls the alarm (62) to sound an alarm.

4. The dry quenching coke boiler according to claim 3, characterized in that, The first level monitor (51), the second level monitor (52), and the third level monitor (61) are all tilted downwards.

5. The dry quenching coke boiler according to claim 2, characterized in that, The electrically controlled valve (41) is a star-shaped ash discharge valve.

6. The dry quenching coke boiler according to claim 1, characterized in that, The lower part of the second sidewall (112) is inclined toward the centerline of the tail channel (11).

7. The dry quenching coke boiler according to claim 6, characterized in that, The centerline of the ash hopper (3) is located on the side of the centerline of the tail channel (11) near the flue gas outlet (113).

8. The dry quenching coke boiler according to claim 1, characterized in that, Along the second horizontal direction (Y), there are at least two ash hoppers (3) arranged side by side, and the second horizontal direction (Y) is perpendicular to the first horizontal direction (X).

9. The dry quenching coke boiler according to claim 1, characterized in that, Also includes: Multiple soot blowers are respectively installed above the evaporator and the economizer.

10. A dry quenching system, characterized in that, include: Coke oven and dry quenching coke boiler as described in any one of claims 1 to 9.

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