An efficient petroleum coke calcining furnace and method of use

Abstract

The utility model provides a kind of efficient petroleum coke calcinator and use method, belong to petroleum coke preparation field, calcinator is provided with gate adjusting device, including cover and adjusting rod, cover is fixed on furnace body to separate transverse gas passage with outside, adjusting rod is successively composed of round head, screw rod and connecting end, is provided with threaded hole on cover, screw rod is threadedly cooperated with threaded hole on cover, is provided with arc slot on gate, round head is rotatably inserted in arc slot. The petroleum coke calcinator is sealed between adjusting rod and furnace wall by using the mode that adjusting rod is threadedly connected with furnace wall in the case that sampling conventional seal cannot be carried out under high-temperature working condition in furnace, that is, both sealing problem and relative movement between adjusting rod and furnace wall are solved, gate push-pull operation under the specific working condition is realized by adaptive innovative structure at the joint of adjusting rod and gate, adjusting rod driving device with adaptive innovative structure is also set on the outer end of adjusting rod, and adjusting rod adjustment driving under the specific working condition is realized.

Description

Technical Field

[0001] This invention relates to the field of petroleum coke preparation technology, specifically to a high-efficiency petroleum coke calcining furnace and its usage method. Background Technology

[0002] Petroleum coke is a black or dark gray, hard solid petroleum product with a metallic luster. It is porous and consists of granular, columnar, or needle-like carbonaceous matter formed from tiny graphite crystals. Petroleum coke is composed of hydrocarbons, containing 90-97% carbon and 1.5-8% hydrogen, as well as nitrogen, chlorine, sulfur, and heavy metal compounds. Petroleum coke is a byproduct of the high-temperature cracking of feedstock oil in delayed coking units to produce light oil products. The yield of petroleum coke is approximately 25-30% of the feedstock oil yield. Its lower heating value is about 1.5-2 times that of coal, its ash content is no more than 0.5%, and its volatile matter is about 11%, making its quality close to that of anthracite. In the production of graphite electrodes for steelmaking or anode paste (molten electrodes) for aluminum and magnesium production, the raw petroleum coke must be calcined to meet requirements. The calcination temperature is generally around 1300℃, with the aim of removing as much of the volatile matter as possible from the petroleum coke. This reduces the hydrogen content of recycled petroleum coke, increases the graphitization degree of the petroleum coke, thereby improving the high-temperature strength and heat resistance of graphite electrodes, and also improving the electrical conductivity of graphite electrodes. Calcined coke is mainly used in the production of graphite electrodes, carbon paste products, corundum, food-grade phosphate, metallurgical industries, and calcium carbide, among which graphite electrodes are the most widely used.

[0003] The calcining furnace for petroleum coke is a common processing technology both domestically and internationally. It's a thermal device that indirectly heats carbonaceous materials within a fixed calcining tank, completing the calcination process. The calcining furnace is a widely used furnace type in the carbon industry. During calcination, the raw material is added to the tank through a top-feeding device and gradually heated by flues located on both sides of the tank as it moves downwards. The heat generated by the combustion of fuel in the flues is indirectly transferred to the raw material through the flue walls. When the raw material temperature reaches 350–600℃, a large amount of volatile matter is released. This volatile matter is collected through a volatile matter channel and sent back to the flues for combustion. The combustion of volatile matter is another heat source for the calcining furnace. After undergoing a series of physicochemical changes at temperatures above 1200–1300℃, the raw material enters a water jacket for cooling from the bottom of the tank and is finally discharged from the furnace by a discharge device. The waste gas, having completed heat exchange, is sent to a waste heat boiler to produce steam or to a heat exchange chamber to preheat the air for fuel and volatile matter combustion.

[0004] In a pot furnace, a mechanism for adjusting the opening size of a volatile matter or air damper should be installed at the location corresponding to a specific fire channel layer on the operating surface before and after the furnace. Currently, the most commonly used volatile matter or air damper opening size adjustment mechanism is a manual adjustment mechanism. Generally, when adjusting volatile matter and air volume, the operator opens the operating hole cover on the furnace wall, inserts a long, rod-shaped tool hook into the hole, and pushes or pulls the volatile matter or air damper to adjust the size of the through hole on the damper seat brick, thereby adjusting the amount of volatile matter or air. When adjusting the damper opening size, because the operating hole cover on the furnace wall must be opened, the operating hole is not sealed during adjustment, allowing heat from inside the furnace to escape, which adversely affects the normal operation of the furnace. This is one of the biggest problems with manual adjustment mechanisms. Some systems use a driven adjustment mechanism, where an operating rod that moves in and out of the furnace wall pushes and pulls the gate. In this case, the sealing between the operating rod and the furnace wall is also difficult to achieve. Because this is a high-temperature operating condition, traditional sealing ring structures cannot be used for sealing. Even if packing seals are used, it is difficult to find suitable ones on the market. Therefore, how to economically and effectively solve the sealing performance between the adjustment rod and the furnace wall has become the primary problem to be solved. At the same time, it is necessary to consider the overall improvement and innovation of the structure by combining the pushing and pulling action of the adjustment rod on the gate and realizing the mechanical drive adjustment of the adjustment rod when dealing with the sealing problem between the adjustment rod and the furnace wall. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a high-efficiency petroleum coke calcining furnace and its usage method. This furnace and method address situations where conventional sealing methods cannot be used to seal the adjusting rod and furnace wall under high-temperature conditions. By employing a threaded connection between the adjusting rod and the furnace wall, the sealing problem is solved without affecting the relative movement between the two. An adaptive and innovative structure at the junction of the adjusting rod and the gate enables the gate's push-pull operation under these specific conditions. Furthermore, an adjusting rod drive device with a similarly adaptive and innovative structure at the outer end of the adjusting rod enables the adjusting rod's adjustment drive under these specific conditions.

[0006] The technical solution of the present invention is as follows:

[0007] A high-efficiency petroleum coke calcining furnace has a gas channel on the furnace body. The gas channel includes a vertical gas channel and a horizontal gas channel. The lower end of the vertical gas channel is connected to a gas source, and the upper end is connected to the horizontal gas channel. One end of the horizontal gas channel supplies the required gas to the fire channel inside the furnace body, and the other end is connected to the outside of the furnace body. An adjustable gate is provided at the junction of the vertical gas channel and the horizontal gas channel. The petroleum coke calcining furnace is equipped with a gate adjustment device.

[0008] The gate adjustment device includes a cover and an adjustment rod. The cover is fixed on the furnace body to separate the transverse gas passage from the outside. The adjustment rod consists of a round head, a screw and a connecting end in sequence. A threaded hole is provided on the cover. The screw is threadedly engaged with the threaded hole on the cover. An arc groove is provided on the gate, and the round head is rotatably inserted into the arc groove.

[0009] An observation window for observing the position of the gate is provided on the cover.

[0010] As a further embodiment, the observation window is heat-resistant glass fixedly installed on the cover, and an observation hole is provided on the cover. The heat-resistant glass is tightly pressed onto the cover by a pressure plate.

[0011] As a further embodiment, the screw and the threaded hole on the cover are fitted with fine-pitch threads.

[0012] As a further embodiment, the petroleum coke calcining furnace is equipped with an adjusting rod driving device, which is located outside the furnace body and is fixedly connected to the connecting end to drive the adjusting rod to rotate.

[0013] As a further embodiment, the adjusting rod driving device includes a motor that can move linearly along the direction of the adjusting rod, and the output shaft of the motor is fixedly connected to the connecting end via a coupling.

[0014] As a further embodiment, the motor is fixed on a motor base, a guide groove is provided at the bottom of the motor base, a bracket is fixed on the furnace body, and a guide rail is fixed on the bracket. The motor base can slide linearly on the bracket through the guide groove and the guide rail.

[0015] As a further implementation, a stroke detection device is provided on the motor base.

[0016] As a further embodiment, the stroke detection device is a displacement sensor.

[0017] As a further embodiment, it also includes a flue temperature monitoring device and a control system. The flue temperature monitoring device is a thermocouple installed inside the flue or a high-temperature resistant industrial camera installed outside the observation window. The motor, the stroke detection device, and the flue temperature monitoring device are all communicatively connected to the control system.

[0018] This invention also provides a method for using a high-efficiency petroleum coke calcining furnace. For the aforementioned petroleum coke calcining furnace, the gate adjustment of the petroleum coke calcining furnace has two modes: manual adjustment and automatic adjustment.

[0019] In manual adjustment mode, when it is necessary to adjust the opening degree of the gate, the adjusting rod is turned by hand. The screw of the adjusting rod is threadedly engaged with the threaded hole on the cover, causing the adjusting rod to move linearly along the threaded hole. The round head, which is rotatably inserted in the arc groove, drives the gate to move linearly, thereby adjusting the opening degree of the gate. An observation window is provided on the cover for observing the position of the gate, and the opening degree of the gate can be viewed in real time through the observation window.

[0020] In automatic adjustment mode, the control system obtains the real-time temperature of the fire channel through the signal fed back by thermocouples or high-temperature industrial cameras. Let the real-time temperature obtained by the control system from the fire channel monitoring device be Ts, let the preset fire channel temperature threshold range in the control system be Tl-Th, and let the single adjustment displacement of the gate be X. The control system compares Ts with the preset fire channel temperature threshold in real time.

[0021] When Ts is less than Tl, the control system issues a command to increase the gate size by X and sends a start command to the motor. The motor rotates, causing the adjusting rod to rotate and move linearly. The adjusting rod then moves the gate linearly, thereby increasing the gate opening size. The control system obtains the gate's adjustment displacement in real time. When the gate's adjustment displacement reaches X, the motor stops rotating. After one heating cycle, the real-time heating rate of the heating cycle is compared with the preset heating rate in the control system, as well as Ts and Tl. If the real-time heating rate is not less than the preset heating rate or Ts is not less than Tl, the gate size is not increased further. If the real-time heating rate is less than the preset heating rate and Ts is less than Tl, the motor is started, and the gate opening is increased by X again. After one heating cycle, the real-time heating rate of the heating cycle is compared with the preset heating rate in the control system again. This process is repeated until the real-time heating rate is not less than the preset heating rate or Ts is not less than Tl.

[0022] When Ts is greater than Th, the control system issues a command to reduce the gate X and sends a start command to the motor. The motor rotates, causing the adjusting rod to rotate and move linearly. The adjusting rod then moves the gate linearly, thereby reducing the opening size of the gate. The control system acquires the adjustment displacement of the gate in real time. When the adjustment displacement of the gate reaches X, the motor stops rotating. After one cooling cycle, the real-time cooling rate of the cooling cycle is compared with the preset cooling rate in the control system, as well as Ts and Th. If the real-time cooling rate is not less than the preset heating rate or Ts is not greater than Th, the gate X is not further reduced. If the real-time cooling rate is less than the preset cooling rate and Ts is greater than Th, the motor is started, and the gate opening is reduced by X again. After one cooling cycle, the real-time cooling rate of the cooling cycle is compared with the preset cooling rate in the control system again. This process is repeated until the real-time cooling rate is not less than the preset cooling rate or Ts is not greater than Th.

[0023] The beneficial effects of this invention are as follows:

[0024] 1. This invention discloses a high-efficiency petroleum coke calcining furnace and its usage method. This petroleum coke calcining furnace addresses the situation where conventional sealing methods cannot be used to seal the adjusting rod and the furnace wall under high-temperature conditions inside the furnace. By adopting a threaded connection between the adjusting rod and the furnace wall, the sealing problem is solved without affecting the relative movement between the two.

[0025] 2. The present invention discloses a high-efficiency petroleum coke calcining furnace and its usage method. The petroleum coke calcining furnace realizes the gate pushing and pulling operation under this specific working condition through an adaptive and innovative structure at the junction of the adjusting rod and the gate.

[0026] 3. The present invention discloses a high-efficiency petroleum coke calcining furnace and its method of use. The petroleum coke calcining furnace realizes the adjustment and driving of the adjustment rod under this specific working condition by setting an adjustment rod driving device with the same adaptive and innovative structure at the outer end of the adjustment rod. Attached Figure Description

[0027] The solutions and advantages of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention.

[0028] In the attached diagram:

[0029] Figure 1 This is a schematic diagram of the structure of a gate regulating device for a high-efficiency petroleum coke calcining furnace according to an embodiment of the present invention.

[0030] Figure 2 for Figure 1 Sectional view of AA;

[0031] Figure 3 for Figure 1 Enlarged view at point B;

[0032] Figure 4 for Figure 1 CC section view;

[0033] Figure 5 This is a schematic diagram of the coupling in a gate regulating device of a high-efficiency petroleum coke calciner according to another embodiment of the present invention.

[0034] Figure 6 for Figure 5 DD section view;

[0035] Figure 7 This is a schematic diagram of the coupling body.

[0036] Figure 8 This is a schematic diagram of the tensioning rod.

[0037] The components represented by the various reference numerals in the diagram are:

[0038] This invention comprises: 1. Furnace body; 2. Vertical gas channel; 3. Gate plate; 3a. Arc groove; 4. Cover; 5. Adjusting rod; 5a. Round head; 5b. Screw; 5c. Connecting end; 5c1. Connecting shaft; 6. Coupling; 6a. Coupling body; 6a1. Column; 6a2. Connecting hole; 6a2a. Fan-shaped groove; 6a3. Rod guide hole; 6b. Friction pad; 6c. Pad seat; 6d. Tensioning rod; 6d1. Hand grip boss; 6d2. Rod body I; 6d3. Baffle; 6d4. Rod body II; 6e. Spring; 6f. Pressure sleeve; 7. Motor; 7a. Motor end connecting shaft; 8. Motor base; 9. Bracket; 10. Heat-resistant glass; 11. Pressure plate; 12. Guide rail; 13. Horizontal gas channel. Detailed Implementation

[0039] Example 1

[0040] like Figures 1-4 As shown, the high-efficiency petroleum coke calciner has a gas channel on the furnace body 1. The gas channel includes a vertical gas channel 2 and a horizontal gas channel 13. The lower end of the vertical gas channel 2 is connected to a gas source, and the upper end is connected to the horizontal gas channel 13. One end of the horizontal gas channel 13 provides the required gas to the fire channel inside the furnace body 1, and the other end is connected to the outside of the furnace body 1. An adjustable gate 3 is provided at the junction of the vertical gas channel 2 and the horizontal gas channel 13.

[0041] The petroleum coke calcining furnace is equipped with a gate adjustment device; the gate adjustment device includes a cover 4 and an adjustment rod 5. The cover 4 is fixed on the furnace body 1 to separate the transverse gas channel 13 from the outside. The gap between the cover 4 and the furnace body 1 can be filled with sealing filler or sealed with high-temperature resistant mud to ensure good airtightness between the cover 4 and the furnace body 1, so that the heat inside the furnace body 1 will not be dissipated from the gap. The cover 4 should be made of high-temperature resistant steel.

[0042] The adjusting rod 5 is composed of a round head 5a, a screw 5b, and a connecting end 5c, and is made of high-temperature resistant steel. A threaded hole is provided on the cover 4, and the screw 5b is threaded into the threaded hole on the cover 4. The threaded connection between the adjusting rod 5 and the cover 4 serves two purposes: first, to allow the adjusting rod 5 to move linearly along the direction of the threaded hole; and second, to ensure a tight seal between the adjusting rod 5 and the cover 4. If the adjusting rod 5 were to move linearly perpendicular to the cover 4, a rod-piston structure would be required. However, due to the high temperature at this location, existing conventional sealing products cannot withstand such high temperatures. Therefore, a seal cannot be used between the rod and the piston. The performance is poor. Even if expensive high-temperature resistant sealing fillers are filled between the rod and the piston, it will still affect the movement between the rod and the piston, making the driving of the adjusting rod very difficult. However, the use of screw 5b and threaded hole can achieve linear movement of adjusting rod 5 in the direction of threaded hole, and can also achieve a certain degree of sealing between adjusting rod 5 and cover 4. Although the sealing performance of threaded connection is not as good as conventional sealing ring, it is the best solution in this high-temperature working environment. Preferably, the screw 5b and the threaded hole on the cover 4 are fine-pitch threaded connections, and fine-pitch thread has better sealing performance than coarse-pitch thread.

[0043] Given the threaded connection between the adjusting rod 5 and the cover 4, the adjusting rod 5 rotates and moves back and forth within the cover 4. Therefore, the structure of the adjusting rod 5 pushing and pulling the gate 3 also needs further innovative design based on this structure. An arc-shaped groove 3a is provided on the gate 3, and the round head 5a is rotatably inserted into the arc-shaped groove 3a. The shapes of the round head 5a and the arc-shaped groove 3a should be set to a clearance fit structure with consistent external dimensions. Through the cooperation between the round head 5a and the arc-shaped groove 3a, the adjusting rod 5 rotates and moves back and forth, that is, the gate 3 moves back and forth.

[0044] When adjusting the gate 3, in order to facilitate observation of its real-time position, an observation window for observing the position of the gate 3 is provided on the cover 4. The observation window is a heat-resistant glass 10 fixedly installed on the cover 4. An observation hole is provided on the cover 4. The heat-resistant glass 10 is tightly pressed onto the cover 4 by the pressure plate 11. The observation window allows for a direct view of the position of the gate 3.

[0045] The above describes the structure of the manually adjustable gate mode. Preferably, as follows: Figure 1 As shown, a handle is provided at the outermost end of the screw 5b, through which the adjusting rod 5 can be easily rotated. At the same time, if only the manual adjustment mode is set, the connecting end 5c of the adjusting rod 5 is not needed, and this structure should be removed.

[0046] Furthermore, in the automatic adjustment mode of the gate adjustment, an adjustment rod drive device is provided in the petroleum coke calcining furnace. The adjustment rod drive device is located outside the furnace body 1 and is fixedly connected to the connecting end 5c to drive the adjustment rod 5 to rotate.

[0047] Because the adjusting rod 5 needs to be driven to rotate and also move back and forth with it, the adjusting rod drive device also needs to be adaptively and innovatively designed according to the specific working conditions at this location, such as... Figure 1 and Figure 4 As shown, the adjusting rod driving device includes a motor 7 that can move linearly along the direction of the adjusting rod, and the output shaft of the motor 7 is fixedly connected to the connecting end 5c through a coupling 6.

[0048] The motor 7 is fixed on the motor base 8. A guide groove is provided at the bottom of the motor base 8. A bracket 9 is fixed on the furnace body 1. A guide rail 12 is fixed on the bracket 9. The motor base 8 can slide linearly on the bracket 9 through the guide groove and the guide rail 12. Since the adjusting rod 5 moves along the threaded hole on the cover 4, the motor 7 that drives the adjusting rod 5 to rotate should also move with it.

[0049] A stroke detection device is provided on the motor base 8. The stroke detection device is a displacement sensor. The calcining furnace also includes a flue temperature monitoring device and a control system. The flue temperature monitoring device is a thermocouple installed in the flue or a high-temperature resistant industrial camera installed outside the observation window. The motor, the stroke detection device, and the flue temperature monitoring device are all communicatively connected to the control system to realize the adjustment mode to be implemented in the following embodiment 2.

[0050] Example 2

[0051] This embodiment is based on the high-efficiency petroleum coke calciner provided in Embodiment 1, and further explains its usage method. Specifically, during use, the gate adjustment of the petroleum coke calciner has two modes: manual adjustment and automatic adjustment.

[0052] The manual adjustment mode of the gate valve in the petroleum coke calciner is used as follows:

[0053] Based on the gate adjustment device described above, when it is necessary to adjust the opening degree of the gate 3, the adjusting rod 5 is rotated by hand. The screw 5b of the adjusting rod 5 is threadedly engaged with the threaded hole on the cover 4, causing the adjusting rod 5 to move linearly along the threaded hole. The round head 5a, which is rotatably inserted in the arc groove 3a, drives the gate 3 to move linearly, thereby adjusting the opening degree of the gate 3. An observation window is provided on the cover 4 for observing the position of the gate 3. The opening degree of the gate 3 can be viewed in real time through the observation window.

[0054] In manual mode: operators no longer need to connect the adjustment rod and the gate, and are no longer affected by the direct radiation of high temperature inside the furnace when adjusting the gate, which improves work efficiency. The size of the gate opening can be easily seen through the observation window.

[0055] The method for using the automatic adjustment mode of the gate valve in a petroleum coke calciner is as follows:

[0056] Based on the previously introduced regulating rod drive device, fire channel temperature monitoring device and control system, the control system obtains the real-time temperature of the fire channel through the signal fed back by thermocouple or high-temperature resistant industrial camera. Let the real-time temperature obtained by the control system from the fire channel monitoring device be Ts, let the preset fire channel temperature threshold range in the control system be Tl-Th, and let the single adjustment displacement of the gate 3 be X. The control system compares Ts with the preset fire channel temperature threshold in real time.

[0057] Specifically, when Ts is less than Tl, the control system issues a command to increase the opening size of the gate 3X and sends a start command to the motor 7. The motor 7 rotates, causing the adjusting rod 5 to rotate, which in turn moves the adjusting rod 5 linearly. The adjusting rod 5 then moves the gate 3 linearly, thereby increasing the opening size of the gate 3. The control system obtains the adjustment displacement of the gate 3 in real time. When the adjustment displacement of the gate 3 reaches X, the motor 7 stops rotating. After one heating cycle, the real-time heating rate of the heating cycle is compared with the preset heating rate in the control system, as well as Ts and Tl. If the real-time heating rate is not less than the preset heating rate or Ts is not less than Tl, the gate 3X is not further increased. If the real-time heating rate is less than the preset heating rate and Ts is less than Tl, the motor 7 is started, and the opening of the gate 3 is increased by X again. After one heating cycle, the real-time heating rate of the heating cycle is compared with the preset heating rate in the control system again. This process is repeated until the real-time heating rate is not less than the preset heating rate or Ts is not less than Tl.

[0058] When Ts is greater than Th, the control system issues a command to reduce the gate 3X and sends a start command to the motor 7. The motor 7 rotates, causing the adjusting rod 5 to rotate, which moves the adjusting rod 5 linearly. The adjusting rod 5 moves the gate 3 linearly, thereby reducing the opening size of the gate 3. The control system obtains the adjustment displacement of the gate 3 in real time. When the adjustment displacement of the gate 3 reaches X, the motor 7 stops rotating. After one cooling cycle, the real-time cooling rate of the cooling cycle is compared with the preset cooling rate in the control system, and Ts and Th are also compared. If the real-time cooling rate is not less than the preset heating rate or Ts is not greater than Th, the gate 3X is not further reduced. If the real-time cooling rate is less than the preset cooling rate and Ts is greater than Th, the motor 7 is started, and the opening of the gate 3 is reduced by X again. After one cooling cycle, the real-time cooling rate of the cooling cycle is compared with the preset cooling rate in the control system again. This process is repeated until the real-time cooling rate is not less than the preset cooling rate or Ts is not greater than Th.

[0059] Example 3

[0060] In the petroleum coke calcining furnace equipped with an adjusting rod drive device of the present invention, it is necessary to switch from automatic adjustment mode to manual adjustment mode in certain situations, such as when the motor 7 or the control system malfunctions and needs maintenance. In order to keep the machine running, it is necessary to switch from automatic adjustment mode to manual adjustment mode. Therefore, the connection between the adjusting rod 5 and the motor 7 also needs to have a switching function, that is, the coupling 6 should be able to quickly and easily engage or disengage from the adjusting rod 5 or the motor 7.

[0061] This embodiment is an optional implementation method, such as... Figure 5 and Figure 6 As shown, a coupling in a gate regulating device for a high-efficiency petroleum coke calcining furnace is provided. The coupling 6 shown includes a coupling body 6a, a friction pad 6b, a pad seat 6c, a tension rod 6d, a spring 6e, and a pressure sleeve 6f.

[0062] like Figure 7 As shown, the coupling body 6a includes a column 6a1. Connecting holes 6a2 are provided at the center of the left and right ends of the column 6a1. The connecting shaft 5c1 on the connecting end 5c of the adjusting rod 5 and the motor end connecting shaft 7a on the motor 7 are respectively inserted into the connecting holes 6a2 on both sides of the column 6a1. The connecting holes 6a2 are clearance-fitted with the connecting shaft 5c1 and the motor end connecting shaft 7a. A fan-shaped groove 6a2a is provided in the connecting hole 6a2. A rod guide hole 6a3 facing outward of the column 6a1 is provided at the center of the fan-shaped groove 6a2a.

[0063] The friction pad 6b is fixedly installed on the pad base 6c and together installed in the sector groove 6a2a. The outer surface of the friction pad 6b matches the connecting shaft 5c1 and the motor end connecting shaft 7a. The outer surface of the pad base 6c matches the bottom surface of the sector groove 6a2a.

[0064] like Figure 8 As shown, the tensioning rod 6d consists of a gripping boss 6d1, rod body I 6d2, stop 6d3, and rod body II 6d4 from top to bottom. After the friction pad 6b and the pad seat 6c are installed into the sector groove 6a2a, the rod body II 6d4 is inserted into the connecting hole 6a2 through the rod guide hole 6a3 and fixedly connected to the pad seat 6c. Specifically, an external thread is provided at the end of the rod body II 6d4, and an internal threaded hole is provided at the corresponding position of the pad seat 6a2. The tensioning rod 6d is fixed to the pad seat 6c by the threaded connection. Place the spring 6e on the bearing seat 6c, then put the spring 6e on the rod body I 6d2, and then put the pressure sleeve 6f on the rod body I 6d2. It should be noted that the grip boss 6d1 and the rod body I 6d2 should be detachably fixed, such as by thread. At this time, the grip boss 6d1 should not be installed on the rod body I 6d2. Then, the pressure sleeve 6f is fixed to the coupling body 6a by threading or other means. The pressure sleeve 6f presses the spring 6e tightly. Then, the grip boss 6d1 is installed on the rod body I 6d2.

[0065] When switching between automatic and manual adjustment modes, the method for connecting or disengaging the adjusting rod 5 and motor 7 from the coupling 6 is as follows:

[0066] When switching from automatic adjustment mode to manual adjustment mode, loosen either or both of the coupling 6 and the adjusting rod 5 and the motor 7. Lift the tension rod 6d upward by holding the handle boss 6d1, so that the friction pad 6b is loosened from the connecting shaft 5c1 and the connecting shaft 7a at the motor end. At this time, the adjusting rod 5 and the motor 7 can be pulled out of the coupling 6. Considering the actual operating conditions at this point, it is preferable to lift the tension rod 6d on the side of the adjusting rod 5 while the coupling 6 and the motor 7 side remain locked. At this time, push the motor 7 to move it outward along the guide rail 12 to disengage the coupling 6 from the adjusting rod 5.

[0067] When switching from manual adjustment mode to manual adjustment mode, first lift the tension rod 6d, then insert the connecting shaft 5c1 and the motor end connecting shaft 7a into the connecting hole 6a2, release the grip on the boss 6d1, and the tension rod 6d will be pressed inward under the action of the spring 6e, and the friction pad 6b will be tightly pressed against the connecting shaft 5c1 and the motor end connecting shaft 7a to complete the locking connection.

[0068] The above embodiment 3 is a preferred operating scheme based on embodiments 1 and 2, and is not a limitation of this application. Therefore, the scope of protection of this application should be determined by the claims.

Claims

1. A high-efficiency petroleum coke calcining furnace, wherein a gas channel is provided on the furnace body (1), the gas channel including a vertical gas channel (2) and a horizontal gas channel (13), the lower end of the vertical gas channel (2) is connected to a gas source, and the upper end is connected to the horizontal gas channel (13), one end of the horizontal gas channel (13) provides the required gas to the fire channel inside the furnace body (1), and the other end is connected to the outside of the furnace body (1), wherein an adjustable gate (3) with an adjustable opening size is provided at the junction of the vertical gas channel (2) and the horizontal gas channel (13), characterized in that, The petroleum coke calcining furnace is equipped with a gate regulating device. The gate adjustment device includes a cover (4) and an adjustment rod (5). The cover (4) is fixed on the furnace body (1) to separate the transverse gas channel (13) from the outside. The adjustment rod (5) is composed of a round head (5a), a screw (5b) and a connecting end (5c) in sequence. A threaded hole is provided on the cover (4). The screw (5b) is threadedly engaged with the threaded hole on the cover (4). An arc groove (3a) is provided on the gate (3). The round head (5a) is rotatably inserted into the arc groove (3a). An observation window is provided on the cover (4) for observing the position of the gate (3).

2. The high-efficiency petroleum coke calcining furnace according to claim 1, characterized in that, The observation window is a heat-resistant glass (10) fixedly installed on the cover (4). An observation hole is provided on the cover (4). The heat-resistant glass (10) is tightly pressed onto the cover (4) by the pressure plate (11).

3. The high-efficiency petroleum coke calcining furnace according to claim 1, characterized in that, The screw (5b) and the threaded hole on the cover (4) are fitted with fine-pitch threads.

4. The high-efficiency petroleum coke calcining furnace according to claim 1, characterized in that, The petroleum coke calcining furnace is equipped with an adjusting rod driving device, which is located outside the furnace body (1) and is fixedly connected to the connecting end (5c) to drive the adjusting rod (5) to rotate.

5. A high-efficiency petroleum coke calcining furnace according to claim 4, characterized in that, The adjusting rod drive device includes a motor (7) that can move linearly along the direction of the adjusting rod, and the output shaft of the motor (7) is fixedly connected to the connecting end (5c) through a coupling (6).

6. A high-efficiency petroleum coke calcining furnace according to claim 5, characterized in that, The motor (7) is fixed on the motor base (8). A guide groove is provided at the bottom of the motor base (8). A bracket (9) is fixed on the furnace body (1). A guide rail (12) is fixed on the bracket (9). The motor base (8) can slide linearly on the bracket (9) through the guide groove and the guide rail (12).

7. A high-efficiency petroleum coke calcining furnace according to claim 6, characterized in that, A stroke detection device is installed on the motor base (8).

8. The high-efficiency petroleum coke calcining furnace according to claim 7, characterized in that, The travel detection device is a displacement sensor.

9. A high-efficiency petroleum coke calcining furnace according to claim 7, characterized in that, It also includes a flue temperature monitoring device and a control system. The flue temperature monitoring device is a thermocouple installed inside the flue or a high-temperature resistant industrial camera installed outside the observation window. The motor (7), the stroke detection device, and the flue temperature monitoring device are all connected to the control system.

10. A method of using the high-efficiency petroleum coke calcining furnace as described in claim 9, characterized in that, There are two modes for adjusting the gate of the petroleum coke calciner: manual adjustment and automatic adjustment; In manual adjustment mode, when it is necessary to adjust the opening degree of the gate (3), the adjusting rod (5) is rotated by hand. The screw (5b) of the adjusting rod (5) is threadedly engaged with the threaded hole on the cover (4) and rotates, causing the adjusting rod (5) to move linearly along the threaded hole. The round head (5a) rotatably inserted in the arc groove (3a) drives the gate (3) to move linearly, thereby adjusting the opening degree of the gate (3). An observation window for observing the position of the gate (3) is provided on the cover (4), and the opening degree of the gate (3) can be viewed in real time through the observation window. In automatic adjustment mode, the control system obtains the real-time temperature of the fire channel through the signal fed back by the thermocouple or the high-temperature industrial camera. Let the real-time temperature obtained by the control system from the fire channel monitoring device be Ts, let the preset fire channel temperature threshold range in the control system be Tl-Th, and let the single adjustment displacement of the gate (3) be X. The control system compares Ts with the preset fire channel temperature threshold in real time. When Ts is less than Tl, the control system issues a command to increase the size of the gate (3) by X, and sends a start command to the motor (7). The motor (7) rotates, causing the adjusting rod (5) to rotate, which in turn causes the adjusting rod (5) to move linearly. The adjusting rod (5) then causes the gate (3) to move linearly, thereby increasing the opening size of the gate (3). The control system obtains the adjustment displacement of the gate (3) in real time. When the adjustment displacement of the gate (3) reaches X, the motor (7) stops rotating. After one heating cycle, the real-time heating rate of the heating cycle is compared with the control system. The system compares the preset heating rate with Ts and Tl. When the real-time heating rate is not less than the preset heating rate or Ts is not less than Tl, the gate (3) X is not increased. When the real-time heating rate is less than the preset heating rate and Ts is less than Tl, the motor (7) is started and the gate (3) opening is increased by X. After one heating cycle, the real-time heating rate of the heating cycle is compared with the preset heating rate in the control system. This process is repeated until the real-time heating rate is not less than the preset heating rate or Ts is not less than Tl. When Ts is greater than Th, the control system issues a command to reduce the size of the gate (3) by X, and sends a start command to the motor (7). The motor (7) rotates, causing the adjusting rod (5) to rotate, which in turn causes the adjusting rod (5) to move linearly. The adjusting rod (5) then causes the gate (3) to move linearly, thereby reducing the opening size of the gate (3). The control system obtains the adjustment displacement of the gate (3) in real time. When the adjustment displacement of the gate (3) reaches X, the motor (7) stops rotating. After one cooling cycle, the real-time cooling rate of the cooling cycle is compared with the control system. The system compares the preset cooling rate with the preset heating rate and compares Ts and Th. When the real-time cooling rate is not less than the preset heating rate or Ts is not greater than Th, the gate (3) X is not further reduced. When the real-time cooling rate is less than the preset cooling rate and Ts is greater than Th, the motor (7) is started, and the gate (3) opening is reduced by X. After one cooling cycle, the real-time cooling rate of the cooling cycle is compared with the preset cooling rate in the control system. This process is repeated until the real-time cooling rate is not less than the preset cooling rate or Ts is not greater than Th.

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