Anti-coking device for furnace tube of coking furnace

Abstract

The utility model discloses an anti-coking device for a furnace tube of a coking furnace, which relates to the technical field of coking furnaces and comprises a first arc-shaped tube sleeve and a second arc-shaped tube sleeve, and the first arc-shaped tube sleeve and the second arc-shaped tube sleeve jointly sleeve the outer wall of the furnace tube of the coking furnace and are butted with each other through a locking mechanism; the temperature sensor monitors the temperature of the outer wall of the furnace tube of the coking furnace, and drives the micro water injection pump and the micro water suction pump to work when monitoring that the temperature exceeds a preset value, so that the pipe wall of the furnace tube of the coking furnace is rapidly cooled by using the cooling liquid, the coking rate of medium oil is delayed, a good anti-coking effect is achieved, the practicability is high, and the cost is low. And the first arc-shaped pipe sleeve and the second arc-shaped pipe sleeve are mutually locked and butted through the locking mechanism, so that the first arc-shaped pipe sleeve and the second arc-shaped pipe sleeve can be conveniently disassembled and assembled on the coking furnace pipe, and subsequent corresponding maintenance and overhaul work is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of coking furnaces, in particular to an anti-coking device for coking furnace tubes. Background Art

[0002] A coking furnace is an industrial device for carbonizing organic substances into coke, mainly used in the high-temperature dry distillation process of coal. The coking of coking furnace tubes refers to the phenomenon that during the coking process, due to the cracking and polymerization reactions of the feedstock oil at high temperatures, solid coke deposits on the inner wall of the furnace tubes. This coking phenomenon has an adverse impact on the operation efficiency and safety of the coking furnace. Therefore, it is necessary to prevent coking of the coking furnace tubes through corresponding anti-coking devices.

[0003] For example, the utility model patent with the application number 201921602756.8 discloses an anti-coking structure for delayed coking furnace tubes, including a heat insulation sleeve body sleeved outside the furnace tubes. A number of buckles are provided on the heat insulation sleeve body, and straps cooperating with the buckles are provided at positions corresponding to each buckle. The straps cooperate with the buckles to change the cross-sectional area of the heat insulation sleeve body. When this application is used, the heat insulation sleeve body is wrapped on the furnace tube wall.

[0004] Based on the prior art, it is found that most of the existing anti-coking structures for coking furnace tubes have a single structure and are generally fixedly installed on the outer wall of the furnace tubes, resulting in inconvenient disassembly and assembly work, inconvenient use, and inability to quickly cool the furnace tube wall in a timely manner, resulting in the inability to effectively delay the coking rate of the medium oil in the furnace tubes and the inability to achieve a good anti-coking effect, with low practicality. Therefore, the utility model proposes an anti-coking device for coking furnace tubes to solve the problems existing in the prior art. Summary of the Utility Model

[0005] Aiming at the above problems, the purpose of the utility model is to propose an anti-coking device for coking furnace tubes to solve the problems that the existing anti-coking structures for coking furnace tubes are generally fixedly installed on the outer wall of the furnace tubes, resulting in inconvenient disassembly and assembly work, and the inability to quickly cool the furnace tube wall in a timely manner, resulting in the inability to effectively delay the coking rate of the medium oil in the furnace tubes.

[0006] To achieve the object of the present utility model, the present utility model is realized through the following technical solutions: A coking furnace tube anti-coking device includes a first arc-shaped pipe sleeve and a second arc-shaped pipe sleeve. The first arc-shaped pipe sleeve and the second arc-shaped pipe sleeve are jointly sleeved on the outer wall of the coking furnace tube and are mutually butted through a locking mechanism. Cooling liquid cavities are respectively opened inside the first arc-shaped pipe sleeve and the second arc-shaped pipe sleeve. A micro water injection pump and a micro water extraction pump are respectively fixed on the upper and lower parts of the outer side walls of the first arc-shaped pipe sleeve and the second arc-shaped pipe sleeve. Temperature sensors electrically connected to the micro water injection pump and the micro water extraction pump are respectively fixed on the inner side walls of the first arc-shaped pipe sleeve and the second arc-shaped pipe sleeve.

[0007] A further improvement lies in that: the input end of the micro water injection pump is connected to an external cooling liquid supply device, the output end of the micro water injection pump extends into the cooling liquid cavity, the input end of the micro water extraction pump extends into the cooling liquid cavity, and the output end of the micro water extraction pump is connected to an external cooling liquid recovery device.

[0008] A further improvement lies in that: fitting grooves are respectively opened on the upper and lower sides of the inner side walls of the first arc-shaped pipe sleeve and the second arc-shaped pipe sleeve. Elastic anti-slip rubber pads are fitted and fixed inside the fitting grooves, and the elastic anti-slip rubber pads extend out of the fitting grooves.

[0009] A further improvement lies in that: limiting holes are symmetrically opened at one end of the first arc-shaped pipe sleeve close to the second arc-shaped pipe sleeve, and limiting columns adapted to the limiting holes are symmetrically fixed at one end of the second arc-shaped pipe sleeve close to the first arc-shaped pipe sleeve.

[0010] A further improvement lies in that: the locking mechanism includes a first semi-circular threaded column fixed on the outer walls of the front and rear sides of the first arc-shaped pipe sleeve and a second semi-circular threaded column fixed on the outer walls of the front and rear sides of the second arc-shaped pipe sleeve. A threaded ring is commonly sleeved on the first semi-circular threaded column and the second semi-circular threaded column.

[0011] A further improvement lies in that: the locking mechanism includes a mounting seat fixed on the outer walls of the front and rear sides of the first arc-shaped pipe sleeve and a mounting plate fixed on the outer walls of the front and rear sides of the second arc-shaped pipe sleeve. A plug board sliding through the mounting seat is fixed on one side of the mounting plate close to the mounting seat. A jack is opened on the plug board, and an elastic plug pin adapted to the jack is slidably penetrated through the mounting seat.

[0012] A further improvement lies in that: a cavity is opened inside the mounting seat. A retaining piece is fixed on one side of the elastic plug pin located inside the cavity, and a limiting spring slidably sleeved on the outside of the elastic plug pin is fixed between the inner wall of the cavity far from the plug board and the retaining piece.

[0013] The beneficial effects of the present utility model are as follows: The present utility model includes a first arc-shaped pipe sleeve and a second arc-shaped pipe sleeve. The temperature sensor is used to monitor the temperature of the outer wall of the coking furnace pipe, and when the monitored temperature exceeds the preset value, it drives the micro water injection pump and the micro water extraction pump to work, so as to quickly cool the wall of the coking furnace pipe by using the coolant, thereby delaying the coking rate of the medium oil, playing a good role in preventing coking, having high practicability, and locking the first arc-shaped pipe sleeve and the second arc-shaped pipe sleeve to each other through the locking mechanism, so that the first arc-shaped pipe sleeve and the second arc-shaped pipe sleeve can be conveniently disassembled and assembled on the coking furnace pipe, and further facilitating the subsequent corresponding maintenance and repair work, which is convenient to use. Description of the Drawings

[0014] Figure 1 is the front view of the first embodiment of the present utility model;

[0015] Figure 2 is the front cross-sectional view of the first embodiment of the present utility model;

[0016] Figure 3 is the top cross-sectional view of the first embodiment of the present utility model;

[0017] Figure 4 is the top cross-sectional view of the second embodiment of the present utility model;

[0018] Figure 5 is the present utility model Figure 4 The enlarged view at position A in.

[0019] Among them: 1. First arc-shaped pipe sleeve; 2. Second arc-shaped pipe sleeve; 3. Coolant cavity; 4. Micro water injection pump; 5. Micro water extraction pump; 6. Temperature sensor; 7. Fitting groove; 8. Elastic anti-slip rubber pad; 9. Limit hole; 10. Limit post; 11. First semi-circular threaded post; 12. Second semi-circular threaded post; 13. Threaded ring; 14. Mounting seat; 15. Mounting plate; 16. Insertion plate; 17. Insertion hole; 18. Elastic insertion pin; 19. Cavity; 20. Flap; 21. Limit spring. Detailed Description of the Embodiment

[0020] In order to deepen the understanding of the present utility model, the following will further elaborate on the present utility model in combination with embodiments. This embodiment is only used to explain the present utility model and does not constitute a limitation on the protection scope of the present utility model.

[0021] Embodiment 1

[0022] According to Figure 1 , Figure 2 , Figure 3As shown, the present embodiment provides a coking furnace tube anti-coking device, comprising a first arc-shaped pipe sleeve 1 and a second arc-shaped pipe sleeve 2 which are adapted to each other and both have a semicircular design. The first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2 are docked and locked with each other through a locking mechanism and are jointly sleeved on the outer wall of the coking furnace tube. When the first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2 are docked, a complete circular sleeve is formed. The first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2 are locked and docked with each other through the locking mechanism, so that the first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2 can be conveniently disassembled and assembled on the coking furnace tube. A cooling liquid cavity 3 for the flow of cooling liquid is provided inside the first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2. A micro-water injection pump 4 is fixed to the upper part of the outer wall of the first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2, and a micro-water pump 5 is fixed to the lower part of the outer wall of the first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2, wherein the input end of the micro-water injection pump 4 is connected to an external cooling liquid supply device, and the micro-water injection pump The output end of the micro pump 4 extends into the cooling liquid chamber 3, so that the cooling liquid provided by the external cooling liquid supply device can be injected into the cooling liquid chamber 3. The input end of the micro pump 5 extends into the cooling liquid chamber 3. The output end of the micro pump 5 is connected to the external cooling liquid recovery device, so that the cooling liquid in the cooling liquid chamber 3 can be extracted and injected into the external cooling liquid recovery device for recovery. The inner walls of the first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2 are both provided with grooves, and the grooves are passed through the Russell temperature sensor 6. The temperature sensor 6 is connected to the PLC control system of the device, and is used to drive the micro pump 4 and the micro pump 5 to work when it is detected that the temperature of the coking furnace tube wall is too high. The temperature of the outer wall of the coking furnace tube is monitored by the temperature sensor 6, and the micro pump 4 and the micro pump 5 are driven to work by the PLC control system when the temperature exceeds the preset value, so as to use the coolant to quickly cool the tube wall of the coking furnace tube, thereby delaying the coking rate of the medium oil, and playing a good anti-coking effect.

[0023] The upper and lower parts of the inner side walls of the first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2 are both provided with an embedding groove 7, and an elastic anti-skid rubber pad 8 is embedded and fixed inside the embedding groove 7. The elastic anti-skid rubber pad 8 extends out of the embedding groove 7 on a side away from the micro water injection pump 4 and the micro water pump 5. When the first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2 are sleeved on the furnace tube of the coking furnace, the elastic anti-skid rubber pad 8 can have a certain friction with the outer wall of the furnace tube, thereby playing a certain anti-skid role.

[0024] A limiting hole 9 is symmetrically provided at one end where the first arc-shaped pipe sleeve 1 is butted against the second arc-shaped pipe sleeve 2, and a limiting column 10 is symmetrically fixed at one end where the second arc-shaped pipe sleeve 2 is butted against the first arc-shaped pipe sleeve 1. The limiting column 10 is adapted to the limiting hole 9. When the first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2 are butted against each other, the limiting column 10 is inserted into the limiting hole 9, so that the first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2 can be butted against each other more accurately without deviation.

[0025] The locking mechanism includes a first semi-circular threaded column 11 and a second semi-circular threaded column 12. Two sets of the first semi-circular threaded columns 11 are provided and are respectively welded and fixed to the outer walls of the front and rear sides of the first arc-shaped pipe sleeve 1. Two sets of the second semi-circular threaded columns 12 are provided and are respectively welded and fixed to the outer walls of the front and rear sides of the second arc-shaped pipe sleeve 2. A threaded ring 13 is commonly threadedly sleeved on the first semi-circular threaded column 11 and the second semi-circular threaded column 12. By threadedly screwing the threaded ring 13 onto the outsides of the first semi-circular threaded column 11 and the second semi-circular threaded column 12, the docking and fixing of the first semi-circular threaded column 11 and the second semi-circular threaded column 12 are realized, thereby driving the first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2 to be docked and fixed to each other. Unscrewing the threaded ring 13 can release the docking and fixing.

[0026] Embodiment 2

[0027] See Figure 4 and Figure 5 , this embodiment provides a coking furnace tube anti-coking device. The difference between this embodiment and Embodiment 1 is as follows:

[0028] The locking mechanism includes a mounting seat 14 and a mounting plate 15. Two sets of the mounting seats 14 are provided and are welded and fixed to the outer walls of the front and rear sides of the first arc-shaped pipe sleeve 1. Two sets of the mounting plates 15 are provided and are respectively welded and fixed to the outer walls of the front and rear sides of the second arc-shaped pipe sleeve 2. The positions of the mounting seats 14 correspond to the positions of the mounting plates 15. A plug plate 16 is welded and fixed to one side of the mounting plate 15 close to the mounting seat 14. The side of the plug plate 16 away from the mounting plate 15 slidably penetrates through the mounting seat 14. A through groove for the plug plate 16 to slidably penetrate through is opened on the mounting seat 14. A jack 17 is opened on the plug plate 16. An elastic plug pin 18 adapted to the jack 17 slidably penetrates through the mounting seat 14. By inserting the elastic plug pin 18 into the jack 17, the plug plate 16 is fixed in the mounting seat 14, thereby realizing the fixation between the mounting seat 14 and the mounting plate 15, and further driving the first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2 to be docked and fixed to each other. Pulling out the elastic plug pin 18 from the jack 17 can release the docking and fixing.

[0029] A cavity 19 is opened inside the mounting seat 14 at the position of the elastic plug pin 18. A retaining piece 20 is fixed to one side of the elastic plug pin 18 located inside the cavity 19. A limiting spring 21 is fixed between the inner wall of the cavity 19 away from the plug plate 16 and the retaining piece 20. The limiting spring 21 is slidably sleeved on the outside of the elastic plug pin 18. By providing an elastic force for the retaining piece 20 through the limiting spring 21, the elastic plug pin 18 is provided with an automatic spring-back function.

[0030] In actual use, first, the first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2 are respectively sleeved on the outer walls of the left and right sides of the coking furnace tubes, and the first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2 are docked and locked with each other through the locking mechanism to form a complete circular sleeve on the outer wall of the coking furnace tubes, completing the convenient installation work. Then, the input end of the micro water injection pump 4 is connected to the external coolant supply device through the infusion pipeline, and the output end of the micro water extraction pump 5 is connected to the external coolant recovery device through the infusion pipeline. When the coking furnace is working, the temperature sensors 6 on the inner walls of the first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2 are used to monitor the temperature of the outer wall of the coking furnace tubes. When the monitored temperature exceeds the preset value, the PLC control system drives the micro water injection pump 4 to pump the external coolant into the coolant cavity 3, and drives the micro water extraction pump 5 to discharge and recover the coolant in the coolant cavity 3, so as to quickly cool the wall of the coking furnace tubes by using the coolant flowing in the first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2 (heat exchange principle). By reducing the temperature of the wall of the coking furnace tubes, the temperature of the oil film at the boundary layer of the medium inside the tubes is reduced, thereby delaying the coking rate of the medium oil and playing a role in preventing coking on the inner wall of the tubes;

[0031] When it is necessary to disassemble the first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2 from the coking furnace tubes for corresponding maintenance and repair work, the docking fixation between the first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2 is released by using the locking mechanism, so that the first arc-shaped pipe sleeve 1 and the second arc-shaped pipe sleeve 2 can be separated, and then they can be directly removed from the coking furnace tubes, completing the convenient disassembly work.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A coking furnace tube anti-coking device, comprising a first arc-shaped tube sleeve (1) and a second arc-shaped tube sleeve (2), characterized in that: The first arc-shaped pipe sleeve (1) and the second arc-shaped pipe sleeve (2) are jointly sleeved on the outer wall of the coking furnace pipe and are butt-jointed with each other through a locking mechanism. Cooling liquid cavities (3) are respectively arranged inside the first arc-shaped pipe sleeve (1) and the second arc-shaped pipe sleeve (2). Miniature injection pumps (4) and miniature extraction pumps (5) are respectively fixed on the upper and lower parts of the outer side walls of the first arc-shaped pipe sleeve (1) and the second arc-shaped pipe sleeve (2). Temperature sensors (6) electrically connected to the miniature injection pumps (4) and the miniature extraction pumps (5) are respectively fixed on the inner side walls of the first arc-shaped pipe sleeve (1) and the second arc-shaped pipe sleeve (2).

2. The anti-coking device for the coking furnace tubes according to claim 1, wherein: The input end of the miniature injection pump (4) is connected to an external cooling liquid supply device. The output end of the miniature injection pump (4) extends into the cooling liquid cavity (3). The input end of the miniature extraction pump (5) extends into the cooling liquid cavity (3). The output end of the miniature extraction pump (5) is connected to an external cooling liquid recovery device.

3. The coking furnace tube anti-coking device according to claim 1, characterized in that: Fitting grooves (7) are respectively arranged on the upper and lower sides of the inner side walls of the first arc-shaped pipe sleeve (1) and the second arc-shaped pipe sleeve (2). Elastic anti-slip rubber pads (8) are fitted and fixed inside the fitting grooves (7), and the elastic anti-slip rubber pads (8) extend out of the fitting grooves (7).

4. A coking furnace tube anti-coking device according to claim 1, characterized in that: Limiting holes (9) are symmetrically arranged at one end of the first arc-shaped pipe sleeve (1) close to the second arc-shaped pipe sleeve (2). Limiting columns (10) adapted to the limiting holes (9) are symmetrically fixed at one end of the second arc-shaped pipe sleeve (2) close to the first arc-shaped pipe sleeve (1).

5. The coking furnace tube anti-coking device according to claim 1, characterized in that: The locking mechanism includes first semi-circular threaded columns (11) fixed on the outer walls of the front and rear sides of the first arc-shaped pipe sleeve (1) and second semi-circular threaded columns (12) fixed on the outer walls of the front and rear sides of the second arc-shaped pipe sleeve (2). A threaded ring (13) is commonly sleeved on the first semi-circular threaded columns (11) and the second semi-circular threaded columns (12) in a threaded manner.

6. The anti-coking device for the coking furnace tubes according to claim 1, characterized in that: The locking mechanism includes mounting seats (14) fixed on the outer walls of the front and rear sides of the first arc-shaped pipe sleeve (1) and mounting plates (15) fixed on the outer walls of the front and rear sides of the second arc-shaped pipe sleeve (2). A plug board (16) sliding through the mounting seat (14) is fixed on one side of the mounting plate (15) close to the mounting seat (14). A jack (17) is arranged on the plug board (16). An elastic plug pin (18) adapted to the jack (17) is slidably penetrated through the mounting seat (14).

7. A coking furnace tube anti-coking device according to claim 6, characterized in that: A cavity (19) is arranged inside the mounting seat (14). A retaining piece (20) is fixed on one side of the elastic plug pin (18) located inside the cavity (19). A limiting spring (21) slidably sleeved on the outer part of the elastic plug pin (18) is fixed between the inner wall of the cavity (19) on the side far from the plug board (16) and the retaining piece (20).

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