Novel cracking furnace tube

Abstract

The utility model relates to the technical field of cracking furnace tubes, and discloses a novel cracking furnace tube which comprises a cracking furnace pipeline and an annular ultrasonic transducer, the ultrasonic transducer is movably sleeved on the outer wall of the cracking furnace pipeline, the ultrasonic transducer is matched with the outer wall of the cracking furnace pipeline, and the cracking furnace tube is arranged on the cracking furnace pipeline. And two sets of limiting connecting plates are fixedly installed on the outer wall of the cracking furnace pipeline, height adjusting screw rods are rotationally installed on the wall faces, close to each other, of the two sets of limiting connecting plates, and a connecting block is fixedly installed on the outer wall of the front side of the ultrasonic transducer. Mechanical energy is generated through an ultrasonic transducer, coke attached to the inner side wall of a furnace tube cracking furnace pipeline is reduced, meanwhile, a power source of a driving motor is started, transmission gears can rotate in different directions according to different rotation directions of the output end of the driving motor, and a movable lantern ring can move forwards and backwards under cooperation of the two transmission gears; and the movable lantern ring can move up and down along the outer wall of the height adjusting screw rod.

Description

Technical Field

[0001] The utility model relates to the technical field of cracking furnace tubes, in particular to a novel cracking furnace tube. Background Art

[0002] Most of the world's ethylene production adopts tubular furnace steam cracking process. Hydrocarbon raw materials and steam undergo thermal cracking reaction in high-temperature furnace tubes to produce small molecular weight target products such as hydrogen, ethylene, propylene, butadiene, etc., accompanied by a large number of side reactions, resulting in high molecular weight low-value by-products such as heavy oil, tar and coke. The side reactions have brought many adverse effects on ethylene production: not only the yield of target products is reduced, but also a series of adverse effects such as reduced processing capacity of the device, increased energy consumption and shortened operation cycle; on the other hand, the migration of metal ions in the tube wall caused by catalytic coking causes carburization creep phenomenon, which damages the original antioxidant properties of the furnace tube and leads to a decrease in mechanical properties. Ultimately, the furnace tube needs to be replaced, resulting in a decrease in production efficiency, which directly affects the economic benefits of the device.

[0003] The public (announcement) number CN210683695U disclosed a cracking furnace tube with ultrasonic online coke cleaning, which belongs to the field of cracking furnaces. The key points of the technical solution are that it includes an ultrasonic transducer, and an amplitude modulation rod is detachably connected to the ultrasonic transducer. One end of the amplitude modulation rod is detachably connected to the output end of the ultrasonic transducer, and the amplitude modulation rod abuts against the output end of the ultrasonic transducer, and the other end abuts against the side wall of the furnace tube, and the end of the amplitude modulation rod abutting against the furnace tube is provided with an arc surface matched with the side wall of the furnace tube, and the contour of the arc surface is a cross-shaped structure built on the side wall of the furnace tube. The utility model achieves the effect of reducing the adhesion of coke on the inner wall of the furnace tube, and is applied to cracking furnaces.

[0004] During use, the utility model reduces the risk of coke adhering to the inner wall of the furnace tube through the vibration generated by the ultrasonic transducer, and the ultrasonic transducer is only arranged on the outer wall of the furnace tube. The mechanical energy generated by the ultrasonic transducer will gradually decrease with the increase of the distance. Therefore, the farther away from the position of the ultrasonic ring energy, the worse the effect of reducing adhesion will be, and the overall anti-adhesion effect cannot be ensured.

[0005] Therefore, we propose a new type of cracking furnace tube. Utility Model Content

[0006] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a new type of cracking furnace tube.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a novel cracking furnace tube, comprising a cracking furnace tube and an ultrasonic transducer, wherein the ultrasonic transducer is annular, the ultrasonic transducer is movably sleeved on the outer wall of the cracking furnace tube, the ultrasonic transducer and the outer wall of the cracking furnace tube are adapted, two groups of limit connecting plates are fixedly installed on the outer wall of the cracking furnace tube, the wall surfaces close to the two groups of limit connecting plates are rotatably installed with a height adjustment screw, a connecting block is fixedly installed on the front outer wall of the ultrasonic transducer, the outer wall of the height adjustment screw movably penetrates the upper and lower wall surfaces of the connecting block, a driving motor is fixedly installed on the lower wall surface of the connecting block, the output end of the driving motor movably penetrates the upper and lower wall surfaces of the connecting block, a movable collar is rotatably installed on the upper wall surface of the connecting block, the movable collar is annular, a threaded groove is provided on the inner wall of the movable collar, the movable collar and the outer wall of the height adjustment screw are threadedly connected together, the outer wall of the movable collar and the output end of the driving motor are both fixedly installed with a transmission gear, and the two groups of transmission gears are meshed and connected together.

[0008] Furthermore, the cracking furnace pipeline includes a high temperature resistant layer, an attraction layer, a heat insulating layer, a fireproof layer, a corrosion resistant layer, and a wear resistant layer.

[0009] Furthermore, the attraction layer is fixedly installed on the lower side wall of the high temperature resistant layer, the insulation layer is fixedly installed on the lower side wall of the attraction layer, the fireproof layer is fixedly installed on the lower side wall of the insulation layer, the corrosion-resistant layer is fixedly installed on the lower side wall of the fireproof layer, and the wear-resistant layer is fixedly installed on the lower side wall of the corrosion-resistant layer.

[0010] Furthermore, the high temperature resistant layer is made of aluminum silicate material, which has the characteristics of high temperature resistance, sound absorption and noise reduction, thereby improving the overall high temperature resistance of the cracking furnace pipeline and increasing its service life.

[0011] Furthermore, the attraction layer is made of attraction cotton, which can effectively reduce noise and improve the use effect.

[0012] Furthermore, the heat insulation layer is a composite of a glass fiber layer, a nano-composite layer and a polypropylene plastic layer.

[0013] Beneficial Effects

[0014] The utility model provides a new type of cracking furnace tube, which has the following beneficial effects:

[0015] (1) A novel cracking furnace tube. During use, the utility model generates mechanical energy through an ultrasonic transducer to reduce the adhesion of coke to the inner wall of the cracking furnace tube. At the same time, the power supply of the driving motor is turned on. According to the different rotation directions of the output end of the driving motor, the rotation direction of the transmission gear can be different. With the cooperation of two sets of transmission gears, the movable collar can move forward and backward. The movable collar can move up and down along the outer wall of the height adjustment screw. In this way, the connecting block can move up and down along the outer wall of the cracking furnace tube with the ultrasonic transducer. Mechanical energy can be generated on the outer wall of the entire cracking furnace tube to prevent coke from adhering to the inner wall of the cracking furnace tube, thereby improving the anti-adhesion effect.

[0016] (2) The high temperature resistant layer of the novel cracking furnace tube is made of aluminum silicate material. Aluminum silicate has high temperature resistance and sound absorption and noise reduction, which improves the high temperature resistance of the cracking furnace pipeline as a whole and increases its service life. The attraction layer is made of attraction cotton, which can effectively reduce noise and improve the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of the utility model as a whole;

[0018] Figure 2 for Figure 1 A magnified view of location A;

[0019] Figure 3 This is the overall structural diagram of the cracking furnace pipeline of the utility model.

[0020] Legend: 1. Cracking furnace pipeline; 2. Ultrasonic transducer; 3. Limit connecting plate; 4. Height adjustment screw; 5. Connecting block; 6. Driving motor; 7. Transmission gear; 8. Movable collar; 9. High temperature resistant layer; 10. Attraction layer; 11. Insulation layer; 12. Fireproof layer; 13. Corrosion resistant layer; 14. Wear resistant layer. DETAILED DESCRIPTION

[0021] Embodiment 1: A novel cracking furnace tube, such as Figure 1 , Figure 2As shown, it includes a cracking furnace pipeline 1 and an ultrasonic transducer 2, the ultrasonic transducer 2 is annular, the ultrasonic transducer 2 is movably sleeved on the outer wall of the cracking furnace pipeline 1, the ultrasonic transducer 2 and the outer wall of the cracking furnace pipeline 1 are adapted, two groups of limit connecting plates 3 are fixedly installed on the outer wall of the cracking furnace pipeline 1, the two groups of limit connecting plates 3 are both rectangular, and the wall surfaces close to the two groups of limit connecting plates 3 are rotatably installed with height adjustment screws 4, and the front side outer wall of the ultrasonic transducer 2 is fixedly installed with a connecting block 5, and the outer wall of the height adjustment screw 4 movably penetrates the connecting block 5, a driving motor 6 is fixedly installed on the lower wall of the connecting block 5, the driving motor 6 is connected to a power supply, the output end of the driving motor 6 movably passes through the upper and lower walls of the connecting block 5, and a movable collar 8 is rotatably installed on the upper wall of the connecting block 5. The movable collar 8 is annular, and a thread groove is provided on the inner wall of the movable collar 8. The movable collar 8 and the outer wall of the height adjustment screw 4 are threadedly connected together, and the outer wall of the movable collar 8 and the output end of the driving motor 6 are fixedly installed with a transmission gear 7, and the two sets of transmission gears 7 are meshed and connected together.

[0022] During use, the utility model generates mechanical energy through the ultrasonic transducer 2, thereby reducing the adhesion of coke to the inner wall of the furnace tube cracking furnace pipeline 1. At the same time, the power supply of the driving motor 6 is turned on. According to the different rotation directions of the output end of the driving motor 6, the rotation directions of the transmission gear 7 can be different. With the cooperation of the two groups of transmission gears 7, the movable collar 8 can move forward and backward, and the movable collar 8 can move up and down along the outer wall of the height adjustment screw 4. In this way, the connecting block 5 can move up and down along the outer wall of the cracking furnace pipeline 1 with the ultrasonic transducer 2, and mechanical energy can be generated for the outer wall of the entire cracking furnace pipeline 1 to prevent coke from adhering to the inner wall of the furnace tube cracking furnace pipeline 1.

[0023] Embodiment 2: Based on Embodiment 1, Figure 3 As shown, the cracking furnace pipeline 1 includes a high temperature resistant layer 9, an attraction layer 10, a heat insulation layer 11, a fireproof layer 12, a corrosion resistant layer 13, and a wear resistant layer 14.

[0024] The attraction layer 10 is fixedly installed on the lower side wall of the high temperature resistant layer 9, the heat insulation layer 11 is fixedly installed on the lower side wall of the attraction layer 10, the fireproof layer 12 is fixedly installed on the lower side wall of the heat insulation layer 11, the corrosion-resistant layer 13 is fixedly installed on the lower side wall of the fireproof layer 12, and the wear-resistant layer 14 is fixedly installed on the lower side wall of the corrosion-resistant layer 13.

[0025] The high temperature resistant layer 9 is made of aluminum silicate material. Aluminum silicate has the characteristics of high temperature resistance, sound absorption and noise reduction, which improves the overall high temperature resistance of the cracking furnace pipeline 1 and increases its service life.

[0026] The attraction layer 10 is made of attraction cotton, which can effectively reduce noise and improve the use effect.

[0027] The heat insulating layer 11 is a composite of a glass fiber layer, a nano-composite layer and a polypropylene plastic layer.

[0028] The high temperature resistant layer 9 is made of aluminum silicate material, which has the characteristics of high temperature resistance, sound absorption and noise reduction, improving the overall high temperature resistance of the cracking furnace pipeline 1 and increasing its service life. The attraction layer 10 is made of attraction cotton, which can effectively reduce noise.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A novel cracking furnace tube, comprising a cracking furnace tube and an ultrasonic transducer, characterized in that: The ultrasonic transducer is annular in shape and movably sleeved on the outer wall of the cracking furnace pipeline. The ultrasonic transducer and the outer wall of the cracking furnace pipeline are adapted to each other. Two groups of limit connecting plates are fixedly installed on the outer wall of the cracking furnace pipeline. A height adjustment screw is rotatably installed on the wall surfaces close to the two groups of limit connecting plates. A connecting block is fixedly installed on the front outer wall of the ultrasonic transducer. The outer wall of the height adjustment screw movably penetrates the upper and lower wall surfaces of the connecting block. A driving motor is fixedly installed on the lower wall surface of the connecting block. The output end of the driving motor movably penetrates the upper and lower wall surfaces of the connecting block. A movable sleeve is rotatably installed on the upper wall surface of the connecting block. The movable sleeve is annular in shape. A threaded groove is provided on the inner wall of the movable sleeve. The movable sleeve and the outer wall of the height adjustment screw are threadedly connected together. The outer wall of the movable sleeve and the output end of the driving motor are both fixedly installed with transmission gears, and the two groups of transmission gears are meshed and connected together.

2. A novel cracking furnace tube according to claim 1, characterized in that: The cracking furnace pipeline comprises a high temperature resistant layer, an attraction layer, a heat insulating layer, a fireproof layer, a corrosion resistant layer and a wear resistant layer.

3. A novel cracking furnace tube according to claim 2, characterized in that: The attraction layer is fixedly installed on the lower side wall of the high temperature resistant layer, the insulation layer is fixedly installed on the lower side wall of the attraction layer, the fireproof layer is fixedly installed on the lower side wall of the insulation layer, the corrosion-resistant layer is fixedly installed on the lower side wall of the fireproof layer, and the wear-resistant layer is fixedly installed on the lower side wall of the corrosion-resistant layer.

4. A novel cracking furnace tube according to claim 2, characterized in that: The high temperature resistant layer is made of aluminum silicate material.

5. A novel cracking furnace tube according to claim 2, characterized in that: The attraction layer is made of attraction cotton.

6. A novel cracking furnace tube according to claim 2, characterized in that: The heat insulation layer is composited by a glass fiber layer, a nano composite layer and a polypropylene plastic layer.

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