Coke conveying device and coke dry quenching treatment system

Abstract

The utility model provides a coke conveying device and a coke dry quenching treatment system, and relates to the technical field of coke production. The coke conveying device comprises a first conveying unit and a second conveying unit, wherein the first conveying unit is provided with a feeding mechanism and a first belt conveyor which are communicated with each other, and the feeding mechanism is communicated with an output port of a dry quenching device; the second conveying unit is provided with a third belt conveyor; the third belt conveyor is used for receiving the coke conveyed by the first belt conveyor; a transfer chute is arranged between the first conveying unit and the second conveying unit; the operation of the device is regulated and controlled through the PLC unit; wherein the first belt conveyor is provided with a first conveying motor and a slip detection device; an anti-blocking switch is arranged on the transfer chute; and the first conveying motor, the slip detection device and the anti-blocking switch are all in signal connection with the PLC unit. The device can respond quickly, and production accidents are reduced.

Description

Technical Field

[0001] This utility model relates to the field of coke production technology, specifically to a coke conveying device and a dry quenching coke treatment system. Background Technology

[0002] The working principle of a heat recovery coke oven is as follows: coking coal is compacted and loaded into the carbonization chamber. The heat stored in the main wall, bottom, and top of the carbonization chamber, as well as heat transferred from adjacent carbonization chambers, heats and decomposes the coking coal, producing raw coal gas. During its escape, the raw coal gas forms a protective gas layer on the surface of the coal bed. It then undergoes incomplete combustion with externally introduced air, generating another protective gas layer. This allows the coal (coke) bed to be heated in the absence of air to produce coke. Dry quenching technology utilizes cooling gas, which exchanges heat with the incandescent red-hot coke in the dry quenching furnace, thereby cooling the coke. The gas that has absorbed the heat from the red-hot coke transfers the heat to the dry quenching boiler to generate steam. The cooled gas is then returned to the dry quenching furnace by a circulating fan for reuse. The coke produced by the heat recovery coke oven is fed into the coke jar of the dry quenching unit through the coke conveying system. After the coke jar seals the red coke, it is lifted to the top of the dry quenching furnace. The red coke is then unloaded into the cooling chamber of the dry quenching furnace by a rotating feeder. The cooled coke is discharged through a vibrating feeder and a sealed valve and enters the coke storage and transportation system.

[0003] The discharged coke is usually output via belt conveyor. Belt conveyor is a simple, efficient and stable material transportation device. However, the existing belt conveyor control system is not comprehensive. In the event of material blockage or belt breakage, there is a relatively large safety risk and accidents, which can easily cause production to stop. Due to the special nature of dry quenching coke production, a more stable conveying system is required. Utility Model Content

[0004] This invention addresses the problem that existing belt conveyor control systems are incomplete, leading to significant safety risks and production stoppages in situations such as belt blockage or belt breakage. It provides a coke conveying device and dry quenching system that can quickly and promptly respond to situations like belt accumulation and belt breakage, preventing safety risks and production stoppages.

[0005] The technical solution adopted in this utility model is:

[0006] A coke conveying device, comprising:

[0007] The first conveying unit has at least a feeding mechanism and a first conveyor belt that are interconnected; the feeding mechanism is connected to the output port of the dry quenching device.

[0008] The second conveying unit includes at least a third conveyor belt; the third conveyor belt is used to receive coke conveyed by the first conveyor belt.

[0009] A transfer chute is disposed between the first conveying unit and the second conveying unit;

[0010] The PLC unit is used to control the operation of the coke conveying device;

[0011] The first conveyor belt is equipped with a first transport motor at its head end and a slippage detection device at its tail end. An anti-blocking switch is installed on the transfer chute. The first transport motor, the slippage detection device, and the anti-blocking switch are all connected to the PLC unit. The PLC unit can regulate the first transport motor based on the signals fed back from the slippage detection device and the anti-blocking switch.

[0012] Furthermore, the feeding mechanism includes a vibrating feeder and a transport pipe; the discharge end of the transport pipe is located above the first conveyor belt.

[0013] Furthermore, a rotary sealing valve is installed on the transport pipeline, and the rotary sealing valve is signal-connected to the PLC unit; when the PLC unit controls the first transport motor to stop suddenly, it can also simultaneously interlock and control the rotary sealing valve to close and the vibrating feeder to stop.

[0014] Furthermore, the first conveying unit also has at least a second conveyor belt; the second conveying unit also has at least a fourth conveyor belt; the fourth conveyor belt is used to receive the coke conveyed by the second conveyor belt.

[0015] Furthermore, a second transport motor is provided at the head end of the second conveyor belt, and a slippage detection device is provided at the tail end of the second conveyor belt; the second transport motor is signal-connected to the PLC unit.

[0016] Furthermore, the first conveyor belt is equipped with a spray pipe.

[0017] Furthermore, an electromagnetic control valve is installed on the spray pipe, and the electromagnetic control valve is signal-connected to the PLC unit; when the PLC unit controls the first transport motor to stop suddenly, it can also simultaneously interlock and control the electromagnetic control valve to close.

[0018] Furthermore, the slippage detection device includes an inductive switch installed on the tail roller of the first conveyor belt.

[0019] Furthermore, the interior of the transfer chute is lined with diabase cast stone material.

[0020] A dry quenching system, comprising:

[0021] Dry quenching furnace;

[0022] The coke conveying device described above has its feeding mechanism connected to the coke output port of the dry quenching furnace.

[0023] The beneficial effects of this utility model are:

[0024] 1. The conveying device of this utility model transfers coke processed by the dry quenching unit to the storage area by setting up a first conveying unit, a second conveying unit, and a transfer chute. A slippage detection device at the tail end of the belt conveyor in the first conveying unit provides timely feedback on abnormalities such as belt slippage or breakage; an anti-blockage switch on the transfer chute provides timely feedback on abnormalities such as blockage, and, in conjunction with a PLC unit, achieves timely and effective adjustment and control, preventing the escalation of abnormalities. This solves the problem of incomplete belt conveyor control systems in existing technologies, which pose significant safety risks and can easily cause production stoppages in the event of belt blockage or belt breakage.

[0025] 2. The processing system of this utility model transfers the coke processed by the dry quenching device to the storage area by setting up a first conveyor unit, a second conveyor unit, and a transfer chute. A slippage detection device at the tail end of the belt conveyor in the first conveyor unit promptly reports any abnormalities such as belt slippage or breakage; furthermore, an anti-blockage switch on the transfer chute promptly reports any abnormalities such as blockage. Combined with a PLC unit, timely and effective adjustment and control are achieved, preventing the escalation of abnormalities. This solves the problem of incomplete belt conveyor control systems in existing technologies, which pose significant safety risks and easily cause production stoppages in the event of belt blockage or belt breakage. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the conveying device according to Embodiment 1 of this utility model;

[0028] Figure 2 This is a schematic diagram of the processing system of Embodiment 2 of this utility model.

[0029] Reference numerals: 100-First conveyor unit, 110-First conveyor belt, 112-First transport motor, 120-Second conveyor belt, 122-Second transport motor, 130-Slippage detection device, 142-Vibrating feeder, 144-Transport pipeline, 146-Rotary sealing valve, 150-Spray pipeline, 152-Solenoid control valve;

[0030] 200 - Second conveyor unit, 230 - Third conveyor belt, 232 - Third transport motor, 240 - Fourth conveyor belt, 242 - Fourth transport motor;

[0031] 300 - Adapter chute; 310 - Anti-blocking switch;

[0032] 400 - Dry quenching furnace; 410 - Gas output pipeline; 420 - Gas input pipeline;

[0033] 500-Dry Quenching Coke Boiler. Detailed Implementation

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.

[0036] The embodiments of the utility model will now be described in detail with reference to the accompanying drawings.

[0037] Example 1

[0038] The coke discharged from the dry quenching unit of the existing heat recovery coke oven is generally output through a belt conveyor. However, the existing belt conveyor control system is not comprehensive, and there are relatively large safety risks in the event of material blockage or belt breakage, which can easily cause production stoppage. Due to the special nature of dry quenching coke production, the conveying device needs to have more stable operating capabilities.

[0039] To address the aforementioned problems in the prior art, this embodiment provides a coke conveying device for outputting coke with a post-quenching temperature <200°C from the dry quenching unit of a heat recovery coke oven. Research in this application has revealed that ensuring stable coke conveying during dry quenching production requires addressing two key aspects: firstly, preventing belt breakage or friction-induced fires due to material blockage; and secondly, preventing material spillage caused by belt breakage, which increases labor intensity. Therefore, the coke conveying device of this embodiment can quickly and promptly respond to situations such as belt accumulation and belt breakage, preventing safety risks and production shutdowns. Please refer to [link to relevant documentation]. Figure 1 The coke conveying device mainly includes: a first conveying unit 100, a second conveying unit 200, a transfer chute 300, and a PLC unit, etc.

[0040] The first conveying unit 100 is used to directly receive the processed coke produced in the dry quenching unit. For example... Figure 1 As shown, the first conveying unit 100 mainly includes a first conveyor belt 110, a second conveyor belt 120, and a feeding mechanism. The feeding mechanism mainly includes a vibrating feeder 142 and a transport pipe 144. The inlet end of the vibrating feeder 142 connects to the outlet of the dry quenching device, and the outlet end of the vibrating feeder 142 connects to the inlet end of the transport pipe 144. The transport pipe 144 has two outlet ends, which feed material to the first conveyor belt 110 and the second conveyor belt 120 respectively. The first conveyor belt 110 and the second conveyor belt 120 are respectively located below the two outlet ends on the transport pipe 144. The material conveying direction of both the first conveyor belt 110 and the second conveyor belt 120 is from the tail end to the head end. A first transport motor 112 is installed at the head end of the first conveyor belt 110, and a second transport motor 122 is installed at the head end of the second conveyor belt 120. Furthermore, both the first conveyor belt 110 and the second conveyor belt 120 are equipped with a slippage detection device 130 at their tail ends. The slippage detection device 130 is used to prevent belt breakage or severe slippage caused by adhesion or other factors. The slippage detection device 130 adopts a "head-to-tail" interlocking protection. The operation of the first conveyor motor 112 and the second conveyor motor 122 requires feedback from the tail slippage detection device 130. Therefore, the slippage detection device 130 mainly includes an induction switch installed on the tail rollers of the first conveyor belt 110 and the second conveyor belt 120. The tail roller passes through the induction switch once for each revolution. The induction switch calculates the sensing time. If the set sensing time is exceeded, an alarm mechanism is triggered, and a slippage signal is transmitted to the PLC unit, thereby activating corresponding protection measures and controlling the first conveyor motor 112 and the second conveyor motor 122 to stop or decelerate.

[0041] The second conveying unit 200 is used to receive the cooled coke conveyed by the first conveying unit 100. The second conveying unit 200 mainly includes a third conveyor belt 230 and a fourth conveyor belt 240. The third conveyor belt 230 and the fourth conveyor belt 240 are respectively located below the first conveyor belt 110 and the second conveyor belt 120. The material conveying direction of both the third conveyor belt 230 and the fourth conveyor belt 240 is from the tail end to the head end. A third conveyor motor 232 and a fourth conveyor motor 242 are respectively installed at the head end of the third conveyor belt 230 and the fourth conveyor belt 240. Simultaneously, the coke storage area is connected below the head end of both the third conveyor belt 230 and the fourth conveyor belt 240.

[0042] A transfer chute 300 is disposed between the first conveying unit 100 and the second conveying unit 200 for transferring coke from the first conveying unit 100 to the second conveying unit 200. In this embodiment, one transfer chute 300 is disposed between the first conveyor belt 110 and the third conveyor belt 230; another transfer chute 300 is disposed between the second conveyor belt 120 and the fourth conveyor belt 240; and an anti-blocking switch 310 is provided on the transfer chute 300. The anti-blocking switch 310 adopts a side-pressure movable door structure and is installed on the side wall of the chute. Under normal circumstances, the movable door is in the initial position; when material blockage occurs, the accumulated material exerts pressure on the side wall of the chute, pushing the movable door to deflect. When the deflection angle of the movable door reaches a set value, the control switch is activated, triggering an alarm mechanism, transmitting a blockage signal to the PLC unit, activating corresponding protection measures, and controlling the shutdown of the first conveyor motor 112 and the second conveyor motor 122, thereby preventing the accident from escalating when coke is blocked. After the fault is cleared, the movable door can automatically reset under the action of the spring.

[0043] The PLC unit is used to regulate the operation of the entire coke conveying device. In this embodiment, the PLC unit is signal-connected to the anti-blocking switch 310 of the first conveying unit 100, the second conveying unit 200, and the transfer chute 300. The PLC unit is also signal-connected to the first conveying motor 112, the second conveying motor 122, and the slippage detection device 130 of the first conveying unit 100. The PLC unit controls the starting, stopping, and operating speed of the first conveying motor 112 and the second conveying motor 122 through signal feedback from the slippage detection device 130 and the anti-blocking switch 310.

[0044] One specific working method of this embodiment is as follows:

[0045] After dry quenching, the coke is first transported via two high-temperature resistant belts on the first conveyor unit 100 through a feeding mechanism. Then, the coke, after its temperature has decreased, is transported via two belts on the second conveyor unit 200 through a transfer chute 300 and stored in the coke storage area. When the anti-blocking switch 310 or the slippage detection device 130 detects an abnormal signal, the operation of the first conveyor unit 100 can be stopped quickly to prevent production safety accidents.

[0046] In this embodiment, the coke conveying device transfers the coke processed by the dry quenching unit to the storage area through a first conveying unit 100, a second conveying unit 200, and a transfer chute 300. A slippage detection device 130 installed at the tail end of the belt conveyor in the first conveying unit 100 promptly reports any abnormalities such as belt slippage or breakage. Furthermore, an anti-blockage switch 310 installed on the transfer chute 300 promptly reports any abnormalities such as blockage. Combined with a PLC unit, timely and effective adjustment and control are achieved, preventing the escalation of abnormalities. This solves the problem in existing belt conveyor control systems that are incomplete, leading to significant safety risks and production shutdowns in cases of belt blockage or breakage.

[0047] Meanwhile, in this embodiment, two conveyor lines are set up, consisting of the first conveyor belt 110 and the third conveyor belt 230, and the second conveyor belt 120 and the fourth conveyor belt 240, which transport independently of each other. This allows the production process to continue on the other conveyor line if one of the conveyor lines experiences an abnormality, thus avoiding the shutdown of the entire system and improving the overall system's risk resistance and production stability.

[0048] Furthermore, in this embodiment, a rotary sealing valve 146 is also provided on the conveying pipe 144 of the feeding mechanism; and the rotary sealing valve 146 and the vibrating feeder 142 are also connected to the PLC unit via signal. Therefore, when the PLC unit controls the first conveying motor 112 and the second conveying motor 122 to stop suddenly, it will simultaneously interlock and control the rotary sealing valve 146 to close and the vibrating feeder 142 to stop working, thereby preventing the dry quenching device from continuing to feed material onto the conveying device and preventing material accumulation.

[0049] Furthermore, in this embodiment, both the first conveyor belt 110 and the second conveyor belt 120 are equipped with spray pipes 150, which are used to reduce the temperature of the coke. Additionally, the spray pipes 150 are equipped with electromagnetic control valves 152, which are also connected to the PLC unit. Therefore, when the PLC unit controls the first conveyor motor 112 and the second conveyor motor 122 to stop suddenly, it can also interlock and control the electromagnetic control valve 152 to close, causing the spray pipes 150 to stop working and preventing water accumulation on the first conveyor belt 110 and the second conveyor belt 120, which would affect normal operation.

[0050] Preferably, in this embodiment, the belts used by the first conveyor belt 110 and the second conveyor belt 120 are EP-200 type, with a heat resistance temperature of 300℃, a belt width B=1200mm, a rated operating speed V=1.6m / s, a rated coke transport capacity Q=220t / h, and a single-sided belt length L=62~65.2m, thereby effectively preventing damage to the belts from high-temperature coke. Furthermore, the transfer chute 300 in this embodiment is lined with diabase cast stone material. Diabase cast stone has high hardness and good wear resistance, effectively resisting the wear caused by the sliding and collision of hot coke within the chute. Compared to materials such as ordinary steel plates, diabase cast stone linings have a significantly longer service life, reducing the frequency of chute lining replacement and lowering maintenance costs. Furthermore, the high temperature of coke after dry quenching ensures that diabase cast stone maintains stable performance under high-temperature conditions, without softening, deforming, or degrading due to temperature increases. It can withstand the high-temperature impact of hot coke for extended periods, ensuring the normal operation of the chute. Additionally, when localized wear or damage occurs to the cast stone lining, repairs are relatively simple, allowing for targeted replacement of the damaged sections without requiring large-scale repairs of the entire chute, thus reducing maintenance time and costs.

[0051] In one or more other embodiments, the slippage detection device 130 can also be configured as a contact wheel type slippage detector. The contact wheel of the slippage detection device 130 is in close contact with the belt. When the belt moves, the contact wheel rotates accordingly, driving the internal pulse disk to generate a signal. After these signals are amplified and counted by the internal processing unit, they are compared with a preset speed value. When the actual speed is lower than the preset value, for example, when it drops to below 75%-85% of the rated speed, the slippage detection device 130 triggers an alarm mechanism, transmits a slippage signal to the PLC unit, and thus activates corresponding protection measures, such as controlling the first transport motor 112 and the second transport motor 122 to stop or decelerate. Alternatively, the slippage detection device 130 can also be a speed detector, which measures the belt speed by detecting reflective marks on the belt or roller and compares it with a preset speed to determine whether slippage has occurred; or a sound detector, vibration detector, etc.

[0052] In one or more other embodiments, the anti-blocking switch 310 may also employ a non-contact detection method or sensor technology, such as monitoring changes in parameters such as the flow rate, velocity, and level of the material in the chute to determine whether a blockage has occurred. When these parameters exceed the normal range, an alarm or protection action is triggered.

[0053] Example 2

[0054] Based on the above embodiments, a dry quenching coke processing system using the coke conveying device is further proposed, and a second embodiment is provided below.

[0055] Please see Figure 2 In the second embodiment, the dry quenching system is used to cool the coke and transfer the heat to the dry quenching boiler 500 to generate steam through inert gas that absorbs the heat of the red-hot coke. The cooled inert gas is then sent back to the dry quenching furnace by a circulating fan for reuse, thereby achieving both cooling and heat recovery. This dry quenching system mainly includes the dry quenching furnace 400 and the coke conveying device in the above embodiment.

[0056] like Figure 2 As shown, the dry quenching furnace 400 is equipped with a gas output pipeline 410 and a gas input pipeline 420 that are connected to the dry quenching coke boiler 500. Furthermore, the coke output port of the dry quenching furnace 400 is connected to the feeding mechanism of the coke conveying device.

[0057] In this embodiment, the dry quenching coke processing system uses a first conveying unit 100, a second conveying unit 200, and a transfer chute 300 to transfer the coke processed by the dry quenching device to the storage area. A slippage detection device 130 installed at the tail end of the belt conveyor in the first conveying unit 100 promptly reports any abnormalities such as belt slippage or breakage. Furthermore, an anti-blocking switch 310 installed on the transfer chute 300 promptly reports any abnormalities such as blockage. Combined with a PLC unit, timely and effective adjustment and control are achieved, preventing the escalation of abnormalities. This solves the problem in existing belt conveyor control systems that are incomplete, leading to significant safety risks and production shutdowns in cases of belt blockage or breakage.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A coke conveying device, characterized in that, Include: The first conveying unit (100) has at least a feeding mechanism and a first conveyor belt (110) that are interconnected; the feeding mechanism is connected to the output port of the dry quenching device; The second conveying unit (200) has at least a third conveyor belt (230); the third conveyor belt (230) is used to receive coke conveyed by the first conveyor belt (110); A transfer chute (300) is disposed between the first conveying unit (100) and the second conveying unit (200); The PLC unit is used to control the operation of the coke conveying device; The first conveyor belt (110) is equipped with a first transport motor (112) at the head end and a slippage detection device (130) at the tail end. The transfer chute (300) is equipped with an anti-blocking switch (310). The first transport motor (112), the slippage detection device (130) and the anti-blocking switch (310) are all connected to the PLC unit. The PLC unit can regulate the first transport motor (112) according to the signals fed back by the slippage detection device (130) and the anti-blocking switch (310).

2. The coke conveying device as described in claim 1, characterized in that, The feeding mechanism includes a vibrating feeder (142) and a transport pipe (144); the discharge end of the transport pipe (144) is located above the first conveyor belt (110).

3. The coke conveying device as described in claim 2, characterized in that, A rotary sealing valve (146) is provided on the transport pipeline (144), and the rotary sealing valve (146) is connected to the PLC unit via signal. When the PLC unit controls the first transport motor (112) to stop suddenly, it can also simultaneously control the rotary sealing valve (146) to close and the vibrating feeder (142) to stop.

4. The coke conveying device as described in claim 1, characterized in that, The first conveying unit (100) further includes at least a second conveyor belt (120); the second conveying unit (200) further includes at least a fourth conveyor belt (240); the fourth conveyor belt (240) is used to receive coke conveyed by the second conveyor belt (120).

5. The coke conveying device as described in claim 4, characterized in that, The second conveyor belt (120) is equipped with a second transport motor (122) at the head end of the belt conveyor and a slippage detection device (130) at the tail end of the belt conveyor; the second transport motor (122) is connected to the PLC unit via signal.

6. The coke conveying device as described in claim 1, characterized in that, The first conveyor belt (110) is equipped with a spray pipe (150).

7. The coke conveying device as described in claim 6, characterized in that, An electromagnetic control valve (152) is installed on the spray pipe (150), and the electromagnetic control valve (152) is connected to the PLC unit via signal. When the PLC unit controls the first transport motor (112) to stop suddenly, it can also simultaneously control the electromagnetic control valve (152) to close.

8. The coke conveying device as described in claim 1, characterized in that, The slippage detection device (130) includes an induction switch installed on the tail roller of the first conveyor belt (110).

9. The coke conveying device as described in claim 1, characterized in that, The transfer chute (300) is lined with diabase cast stone material.

10. A dry quenching coke treatment system, characterized in that, include: Dry quenching furnace (400); The coke conveying device as described in any one of claims 1-9 has a feeding mechanism connected to the coke output port of the dry quenching furnace (400).

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