Coke breeze treatment device and method for wet quenching of coke oven

Abstract

The invention relates to a coke breeze treatment device and method for coke oven wet quenching, the coke breeze treatment device comprises a clean water tank and a sedimentation tank, the clean water tank and the sedimentation tank are connected in sequence, two sides of the clean water tank and the sedimentation tank are provided with ditches, and the ditches are used for leading coke quenching water sprayed in a coke quenching tower back to the coke breeze sedimentation tank to form a closed loop to complete recycling of the coke quenching water. Concrete partition walls are arranged between the clean water tank and the sedimentation tank, between the ditches and the clean water tank and between the ditches and the sedimentation tank, openings are formed in the concrete partition walls, and water gates are arranged at the openings and connected with the control unit. The grabbing device has the advantages that the grabbing device walks on the track and grabs the coke powder of the settling pond and the clean water pond, manual coke powder cleaning is not needed, the operation environment of operators is improved, the labor intensity of the operators is reduced, the post of the coke powder grab bucket operator is omitted, manpower is saved, the enterprise cost is reduced, and the working efficiency is improved. Operators are prevented from being in contact with toxic and harmful substances, and the operation environment of the operators is improved.

Description

Technical Field

[0001] The invention relates to a device and method for processing powdered coke in wet quenching of a coke oven. Background Art

[0002] During the production process of the coke oven, the red-hot coke at about 1000 degrees Celsius must be reduced to below 200 degrees Celsius before it can be transported to the next stage of processing. Therefore, a coke quenching operation must be performed, which is divided into dry quenching and wet quenching according to the operation mode.

[0003] During the wet quenching operation, since the heat exchange method is direct contact between water and coke, the water after quenching will be recycled and needs to be diverted. At the same time, the quenching water contains a large amount of coke powder particles. The quenching water must be cleaned regularly to ensure the smooth operation of the entire system and avoid pipeline blockage and equipment damage. The conventional cleaning method is to manually clean the coke powder.

[0004] Since the quenching water and steam produced during the quenching process contain a large amount of harmful substances, manual cleaning of coke powder is harmful to the health of the operators. Coke powder is generally transported by car, and coke powder containing a certain amount of water is prone to pollution during transportation. Summary of the invention

[0005] The purpose of the present invention is to provide a coke powder treatment device and method for wet quenching of a coke oven, which eliminates the need for manual cleaning of coke powder, improves the operating environment of operators, reduces the labor intensity of operators, and reduces pollution.

[0006] To achieve the above object, the present invention is implemented through the following technical solutions:

[0007] A coke powder treatment device for wet quenching of a coke oven comprises a clear water tank and a sedimentation tank, which are connected in sequence. A ditch is arranged on both sides of the clear water tank and the sedimentation tank, and the ditch is used to lead the quenching water sprayed in the quenching tower back to the coke powder sedimentation tank to form a closed loop to complete the recycling of the quenching water. Concrete partition walls are arranged between the clear water tank and the sedimentation tank, between the ditch and the clear water tank, and between the ditch and the sedimentation tank. The concrete partition walls are provided with openings, and a sluice gate is arranged at the opening, and the sluice gate is connected to a control unit.

[0008] There are multiple sedimentation tanks, which are connected in sequence, and concrete partition walls and openings are provided between the sedimentation tanks.

[0009] It also includes a pump room, a dehydration table, and a coke pool. The pump room, a clear water pool, a sedimentation tank, a dehydration table, and a coke pool are connected in sequence. A water pump is provided in the pump room, and the water pump is used for the circulation of quenching water. A coke conveying device and a coke storage bucket are provided in the coke pool. The coke conveying device is connected to the coke storage bucket, and the water pump and the coke conveying device are respectively connected to the control unit through ports.

[0010] It also includes a grabbing device and a track. The track is arranged above the clean water tank, sedimentation tank, dehydration table and coke tank. The grabbing device runs on the track. The grabbing device is connected to the control unit through a port. The coke storage hopper is provided with a material level sensor for detecting the material level in the coke storage hopper. The coke conveying device adopts a belt conveyor.

[0011] The grabbing device is a double-beam grab crane. The tracks include a trolley length (X direction) running track and a trolley width (Y direction) running track. The length running track runs through the clear water tank, sedimentation tank, dehydration table, and coke tank.

[0012] The control unit includes a PLC system, and the sluice gate is a stainless steel sluice gate.

[0013] A method for treating fine coke in wet quenching of a coke oven, based on PLC, comprising:

[0014] Position sensors are arranged at fixed intervals on the running track of the large vehicle in the length direction (X direction) of the grasping device, and position sensors are also arranged at fixed intervals on the running track of the trolley in the width direction (Y direction) of the grasping device. The large vehicle and the trolley of the grasping device can simultaneously read the coordinates of the unique position sensors in the X direction and Y direction, and present the sedimentation tank, the clear water tank, and the dehydration table in a grid structure, each grid being a small area (working position). The coordinate information is read by the position reading device on the grasping device, and the rotary encoder on the running motor of the large vehicle and the trolley of the grasping device is used to make the grasping device reach the corresponding working position;

[0015] The grabbing device grabs the coke powder from the sedimentation tank and the clear water tank, and places it on the dehydration table for drying and dehydration. The grabbing device grabs the dried and dehydrated coke powder into the coke powder storage hopper, and according to the material level in the coke powder storage hopper detected by the material level sensor, the coke powder conveying device is started to transport the coke powder out;

[0016] When cleaning the sedimentation tank, start the corresponding sluice gate to divert the quenching water and disconnect the sedimentation tank that needs to be cleaned from other sedimentation tanks;

[0017] When the sedimentation tank and the clear water tank are working, the sluice gate is started so that the quenching water flows in the diagonal direction through the sedimentation tank.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. Concrete partition walls and openings are provided between the clear water tank and the sedimentation tank, between the ditch and the clear water tank, and between the ditch and the sedimentation tank. Water gates are provided at the openings. The water gates can realize the diversion of quenching water, and the structure is simple and easy to implement;

[0020] 2. The coke powder pool is equipped with a coke powder conveying device and a coke powder storage hopper, which avoids the problem of environmental pollution caused by the coke powder containing a certain amount of water when it is transported by truck;

[0021] 3. The grabbing device is arranged on the track above the sedimentation tank and the clean water tank to reduce the corrosion of the water vapor in the sedimentation tank and the clean water tank to the equipment. The maintenance environment is relatively good and does not occupy the space below;

[0022] 4. The grabbing device moves on the track, grabs the coke powder in the sedimentation tank and the clear water tank through the grabbing device, and there is no need to manually clean the coke powder, which improves the operating environment of the operators, reduces the labor intensity of the operators, cancels the position of the coke powder grabbing bucket operator, saves manpower, reduces enterprise costs, avoids the operators from contacting toxic and harmful substances, and improves the operating environment of the operators;

[0023] 5. Concrete partition walls and openings are set between the ditch, sedimentation tank 1, sedimentation tank 2, sedimentation tank 3 and the clean water tank. Water gates are set at the openings. The diversion of quenching water is achieved through different opening and closing combinations of the water gates. The diversion of quenching water is a necessary measure to achieve the quenching water backflow and sequential entry and exit of the sedimentation tank. It is also a necessary measure to separate the sedimentation tank from other clean water tanks and sedimentation tanks during maintenance;

[0024] 6. The sedimentation tank and the clear water tank are divided into several small areas (work stations) in a grid-like manner. The coordinate information is read by the position reading device on the grabbing device. In conjunction with the rotary encoder on the traveling motor of the trolley of the grabbing device, the coke grabbing device can automatically reach the corresponding work station without manual intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a top view of the coke powder processing device for wet quenching of coke ovens.

[0026] Figure 2 It is a side view of a coke powder processing device for wet quenching of a coke oven.

[0027] Figure 3 It is a schematic diagram of the structure of a powder coke processing control unit for wet quenching of coke ovens.

[0028] In the figure: 1-sluice gate one 2-sluice gate two 3-sluice gate three 4-sluice gate four 5-sluice gate five 6-sluice gate six 7-sluice gate seven 8-sluice gate eight 9-sluice gate nine 10-sluice gate ten 11-sluice gate eleven 12-dried and dehydrated coke powder 13-coke powder storage bucket 14-grabbing device 15-coke powder conveying device 101-coke oven control room 201-remote control PLC 202-wireless signal transmission and reception ground base station 203-grabbing device vehicle-mounted wireless transceiver 301-sluice gate control cabinet 302-coke powder storage bucket weighing and material level, coke powder conveying control system 303-vehicle-mounted and ground base stations. DETAILED DESCRIPTION

[0029] The present invention is described in detail below in conjunction with the accompanying drawings, but it should be noted that the implementation of the present invention is not limited to the following embodiments.

[0030] The following examples are implemented on the premise of the technical solution of the present invention, and provide detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to the following examples. The methods used in the following examples are conventional methods unless otherwise specified.

[0031] [Example 1]

[0032] See Figure 1 , Figure 2 A coke powder processing device for wet quenching of coke ovens is used in various top-loading and ramming coke oven projects with wet quenching systems, including a pump room, a clear water tank, a sedimentation tank 1, a sedimentation tank 2, a sedimentation tank 3, a dehydration platform, a coke powder tank, a coke powder grabbing device 14, and a track. The pump room, the clear water tank, the sedimentation tank 1, the sedimentation tank 2, the sedimentation tank 3, the dehydration platform, and the coke powder tank are connected in sequence. A ditch 1 and a ditch 2 are respectively arranged on both sides of the clear water tank, the sedimentation tank 1, the sedimentation tank 2, and the sedimentation tank 3. The ditch 1 is connected to the coke quenching tower, and the ditch 2 is respectively connected to the sedimentation tank and the clear water tank, which is a reflux channel for the quenching water. After the quenching water is pumped out through a water pump and a pipeline for quenching, it passes through the coke quenching tower, the ditch, the sedimentation tank, and the clear water tank in sequence and is then pumped out to the upper part of the coke quenching tower by a water pump. A spraying system is used for quenching coke. Concrete partition walls are provided between sedimentation tank 1, sedimentation tank 2 and sedimentation tank 3, between the clear water tank and the sedimentation tank, between the ditch and the clear water tank, and between the ditch and sedimentation tank 1, sedimentation tank 2 and sedimentation tank 3. The concrete partition walls are provided with openings, and sluice gates are provided at the openings. The sluice gates are stainless steel sluice gates. A water pump is provided in the pump room. The water pump is used for circulating quenching water. A coke powder conveying device 15 and a coke powder storage bucket 13 are provided in the coke powder pool. The coke powder conveying device 15 is connected to the coke powder storage bucket 13. The coke powder storage bucket 13 is provided with a material level sensor and a weighing device. The material level sensor is used to detect the material level in the coke powder storage bucket 13. The weighing device is used to measure, accumulate and record the amount of coke powder transported outside. The coke powder conveying device 15 adopts a belt conveyor. The track is arranged above the clear water tank, sedimentation tank, dehydration platform and coke pool. The track includes a longitudinal running track and a width running beam. The longitudinal running track runs through the clear water tank, sedimentation tank, dehydration platform and coke pool. The coke grabbing device 14 runs on the track. The coke grabbing device 14 adopts a double-beam grab crane.

[0033] The sluice gate, water pump, coke powder conveying device 15, and grabbing device 14 are connected to the control unit respectively. Figure 3The control unit is divided into three levels, including the field data collection layer, the network communication layer, and the master station management layer. The field data collection layer is composed of a sluice gate, a coke storage bucket 13 and a weighing device, a coke conveying device 15, and a coke grabbing device 14; the network communication layer includes the on-board PLC machine of the coke grabbing device 14 and the on-board wireless transceiver 203 of the grabbing device 14, the sluice gate control cabinet 301 and the coke storage bucket 13 and the weighing system 302, the remote control PLC 201 of the coke conveying system, and the wireless signal transmitting and receiving ground base station 202 (the ground wireless base station can use the existing coke oven machinery); the master station management layer is located in the coke oven central control room 101, and the old hardware modules and software systems in the central control room can be used. Figure 3 , do embedded design, integrated in the coke oven control system (the part in the dotted box uses MODBUS-TCP communication interface; the powder coke storage tank and weighing system, powder coke output device, and water gate share a PLC, which is set in the control room of the coke quenching water pump and can exchange signals with the coke oven central control room, using optical fiber or hard wire connection; the software system is used for detection and early warning, data processing and storage, data reception and equipment control.

[0034] The signal exchange of the coke grabbing device 14 adopts the wireless output mode, and adopts the combination of vehicle-mounted and ground base stations 303 (the ground base station can utilize the wireless base station of the old coke oven machinery) to realize the real-time exchange of data; the coke grabbing device 14 also has a position recognition module, cooperates with the grid position reading device, and the encoder is used to divide the sedimentation tank, the clear water tank, and the dehydration table into a fixed grid structure, and real-time positioning and trajectory drawing are carried out to complete the operation of different positions; the coke grabbing device 14 is equipped with a vehicle-mounted PLC.

[0035] A method for treating fine coke in wet quenching of a coke oven is implemented based on PLC. The fine coke sedimentation tank and the dehydration table are divided into grids. The fine coke grabbing device 14 is operated according to the daily work flow. The content is as follows:

[0036] The coke powder grabbing device 14 grabs the coke powder from the sedimentation tank and the clean water tank, and places it on the dehydration table to dry and dehydrate. The coke powder grabbing device 14 grabs the dried and dehydrated coke powder 13 into the coke powder storage bucket 13, and according to the material level in the coke powder storage bucket 13 detected by the material level sensor, the coke powder conveying device 15 is started to transport the coke powder out; when it is necessary to clean a sedimentation tank, the corresponding sluice gate is started to divert the quenching water, and the sedimentation tank that needs to be cleaned is disconnected from other sedimentation tanks, and the clean water tank is always in working state.

[0037] [Example 2]

[0038] In this embodiment, a coke powder treatment device and method for wet quenching of coke oven is the same as that of embodiment 1, and a quenching water treatment is added thereto, which is a quenching water diversion and sedimentation process. Figure 1 , Figure 2 Concrete partition walls and openings are provided between sedimentation tank 1, sedimentation tank 2, sedimentation tank 3, and between the ditch, sedimentation tank 1, sedimentation tank 2, sedimentation tank 3 and the clear water tank. Water gates are provided at the openings. Different opening and closing combinations of the water gates can realize the diversion of quenching water.

[0039] Sedimentation tank 1, sedimentation tank 2, and sedimentation tank 3 are all in working condition. The quenching water flows through sedimentation tank 3, sedimentation tank 2, and sedimentation tank 1 in sequence. Sluice gate 1, sluice gate 3, sluice gate 4, sluice gate 6, and sluice gate 10 are in the open state, and the other sluice gates are in the closed state. The quenching water passes through sluice gate 4, sluice gate 10, sluice gate 3, and sluice gate 6 to complete the reflux and sedimentation process and finally reaches the clear water tank. For each sedimentation tank, the quenching water passes through the diagonal distance, so that the sedimentation time is long, the coke powder sedimentation effect is good, the coke powder content in the quenching water entering the clear water tank is small, and the impact on the quenching water pump and pipeline is minimal.

[0040] When a sedimentation tank needs to be thoroughly cleaned and overhauled, it is achieved by switching different sluice gates, as follows:

[0041] When sedimentation tank two needs to be overhauled, the sluice gates that are opened are: sluice gate four 4, sluice gate 10-, sluice gate seven 7, sluice gate one 1, and the remaining sluice gates are closed; the quenching water flows into sedimentation tank three through ditch one, and then flows into sedimentation tank one through sluice gate 10-, ditch two, and sluice gate seven 7, and finally flows into the clear water tank through sluice gate one 1, still flowing in the diagonal direction of sedimentation tank one and sedimentation tank three, to achieve the best sedimentation effect, and different sluice gate opening and closing combinations are used to achieve waterway switching.

[0042] Many sluice gates in old factories are made of pine wood, which are temporarily pulled out or put back by manual cranes or hand winches to complete the above operations; the service life of the sluice gates is short and the operation is extremely inconvenient, because the pine wood is soaked in water for a long time and deformed, and it is often impossible to pull out or reset; the present invention adopts stainless steel sluice gates, which are driven by electric drive devices, and PLC can realize different combinations of opening and closing of each sluice gate to complete the opening and closing actions of the sluice gates; the switch status and fault signal of the sluice gate are connected to the coke oven control room, and different operations are completed according to different working conditions; the sluice gate is provided with a safety limit switch to prevent over-winding and over-load operations.

[0043] [Example 3]

[0044] In the present embodiment, a coke powder processing device and method for wet quenching of coke oven are the same as those in Example 1, and a coke powder processing system is added on the basis of Example 1 and / or Example 2, which is used to collect, dehydrate and transport the coke powder in the sedimentation tank. The above operations in the old factory area are completed by manually operating a grab crane; the coke powder processing system in the present invention mainly includes a coke powder grabbing device 14 and a coke powder output device. The collection, dehydration and loading of coke powder are completed by the coke powder grabbing device 14, and the coke powder grabbing device 14 is an electric double-beam grab crane. The electric double-beam grab crane is provided with a grab, and is equipped with a high-definition camera and a control system to realize unmanned operation.

[0045] The coke powder grabbing device 14 grabs the coke powder in the sedimentation tank with a grab bucket and places it on a dehydration table for dehydration. After a certain dehydration time, it is loaded into the coke powder storage bucket 13 and transported out in cooperation with the coke powder output device.

[0046] The contents of the coke collection and dehydration operation are as follows:

[0047] Because the grab bucket has a fixed volume, and the sizes of the sedimentation tank and the clean water tank are also fixed, the sedimentation tank and the clean water tank are grid-divided into several small areas (working positions) through the position positioning module and the ground sensor; during operation, the coke powder grabbing device 14 moves on the track, and the coke powder grabbing device 14 cleans the sedimentation tank and the clean water tank in sequence according to the fixed path and position on the track, and places the grabbed coke powder on the coke powder dehydration table in sequence, and the above operations can be repeated.

[0048] Loading and transporting coke powder: After a fixed period of dehydration, the coke powder grabbing device 14 grabs the dehydrated coke powder and places it in the coke powder storage bucket 13. The coke powder storage bucket 13 is equipped with a contact level meter and a weighing device. When the coke powder in the storage bucket reaches a high level, the coke powder output device can be started, and the loading of the coke powder grabbing device 14 can be stopped. The dehydrated coke powder is output to the next section. The weight of the coke powder delivered is measured and recorded by the weighing system. When the weight of the coke powder in the coke powder storage bucket 13 is close to the empty weight, the control system notifies the coke powder grabbing device 14 to continue the loading operation. The above process is also cyclic. The operation settings of the coke powder grabbing device 14 are collection and dehydration mode and loading mode, which can be selected remotely or in time periods according to the operating time of each shift.

[0049] The present invention provides concrete partition walls and openings between the clear water tank and the sedimentation tank, between the ditch and the clear water tank, and between the ditch and the sedimentation tank. The openings are all provided with sluice gates. The sluice gates can realize the diversion of quenching water. The structure is simple and easy to realize. The powdered coke tank is provided with a powdered coke conveying device and a powdered coke storage bucket, which avoids the problem of environmental pollution caused by the transportation of powdered coke containing a certain amount of water when transported by car. The grabbing device is arranged on the track above the sedimentation tank and the clear water tank, which reduces the corrosion of the water vapor in the sedimentation tank and the clear water tank to the equipment, and the maintenance environment is relatively good without occupying the space below. The grabbing device moves on the track, and the powdered coke in the sedimentation tank and the clear water tank is grabbed by the grabbing device. There is no need to manually clean the powdered coke, which improves the operating environment of the operators, reduces the labor intensity of the operators, cancels the position of the powdered coke grabbing bucket operator, and saves energy. It saves manpower, reduces enterprise costs, avoids operators from contacting toxic and hazardous substances, and improves the operating environment for operators; concrete partition walls and openings are provided between the ditch, sedimentation tank one, sedimentation tank two, sedimentation tank three and the clean water tank, and sluice gates are provided at the openings. The diversion of quenching water is achieved through different opening and closing combinations of the sluice gates. The diversion of quenching water is a necessary measure to achieve the reflux of quenching water and the sequential entry and exit of the sedimentation tank. It is also a necessary measure to separate the sedimentation tank from other clean water tanks and sedimentation tanks during maintenance; the sedimentation tank and the clean water tank are grid-divided into several small areas (work stations), and the coordinate information is read by the position reading device on the grabbing device, and the rotary encoder on the traveling motor of the trolley and carriage of the grabbing device is used to realize the automatic arrival of the powdered coke grabbing device at the corresponding work station without manual intervention.

Claims

1. A coke powder processing device for wet quenching of coke oven, characterized in that: It includes a clear water tank and a sedimentation tank, which are connected in sequence. Ditches are arranged on both sides of the clear water tank and the sedimentation tank. Concrete partition walls are arranged between the clear water tank and the sedimentation tank, between the ditch and the clear water tank, and between the ditch and the sedimentation tank. The concrete partition walls are provided with openings, and sluice gates are arranged at the openings. The sluice gates are connected to the control unit.

2. The device for processing fine coke for wet quenching of coke oven according to claim 1, characterized in that: There are multiple sedimentation tanks, which are connected in sequence, and concrete partition walls and openings are arranged between the sedimentation tanks.

3. The device for processing fine coke for wet quenching of coke oven according to claim 1, characterized in that: It also includes a pump room, a dehydration table, and a coke pool. The pump room, a clear water pool, a sedimentation tank, a dehydration table, and a coke pool are connected in sequence. A water pump is provided in the pump room, and the water pump is used for the circulation of quenching water. A coke conveying device and a coke storage bucket are provided in the coke pool. The coke conveying device is connected to the coke storage bucket, and the water pump and the coke conveying device are respectively connected to the control unit through ports.

4. The device for processing fine coke for wet quenching of coke oven according to claim 3, characterized in that: It also includes a grabbing device and a track. The track is arranged above the clean water tank, sedimentation tank, dehydration table and coke tank. The grabbing device runs on the track. The grabbing device is connected to the control unit through a port. The coke storage hopper is provided with a material level sensor for detecting the material level in the coke storage hopper. The coke conveying device adopts a belt conveyor.

5. The device for processing fine coke for wet quenching of coke oven according to claim 4, characterized in that: The grabbing device is a double-beam grab crane, and the track includes a trolley length (X direction) running track and a trolley width (Y direction) running track. The length running track runs through the clear water tank, sedimentation tank, dehydration platform, and coke tank.

6. The device for processing fine coke for wet quenching of coke oven according to claim 1, characterized in that: The control unit includes a PLC system, and the sluice gate is a stainless steel sluice gate.

7. A method for treating fine coke in coke oven wet quenching is implemented according to the device of claims 1 to 6, which is implemented based on PLC and is characterized in that: include: Position sensors are arranged at fixed intervals on the running track of the large vehicle in the length direction (X direction) of the grasping device, and position sensors are also arranged at fixed intervals on the running track of the trolley in the width direction (Y direction) of the grasping device. The large vehicle and the trolley of the grasping device can simultaneously read the coordinates of the unique position sensors in the X direction and Y direction, and present the sedimentation tank, the clear water tank, and the dehydration table in a grid structure, each grid being a small area (working position). The coordinate information is read by the position reading device on the grasping device, and the rotary encoder on the running motor of the large vehicle and the trolley of the grasping device is used to make the grasping device reach the corresponding working position; The grabbing device grabs the coke powder from the sedimentation tank and the clear water tank, and places it on the dehydration table for drying and dehydration. The grabbing device grabs the dried and dehydrated coke powder into the coke powder storage hopper, and according to the material level in the coke powder storage hopper detected by the material level sensor, the coke powder conveying device is started to transport the coke powder out; When cleaning the sedimentation tank, start the corresponding sluice gate to divert the quenching water and disconnect the sedimentation tank that needs to be cleaned from other sedimentation tanks; When the sedimentation tank and the clear water tank are working, the sluice gate is started so that the quenching water flows in the diagonal direction through the sedimentation tank.

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