High-alumina refractory wet spraying equipment for a cracking furnace

Abstract

The utility model discloses a kind of high-alumina refractory wet spraying equipment for cracking furnace, belong to refractory spraying technical field. Including the filter mixing box with stirring unit inside, the detection box being located at the lower end of filter mixing box and with its inside through connection, the detection unit being located at the side wall of detection box, the wet spraying gun being communicated with the inside of detection box by connecting pipe;Each raw material is stirred and mixed by stirring unit, forms mixed slurry, while the solid impurities in mixed slurry are filtered by filter screen, can guarantee the spraying quality of high-alumina refractory on cracking furnace inner wall, and also can detect the moisture content and viscosity of mixed slurry by detection unit, improve the adhesion of spraying coating and inner wall, help mixed slurry form smooth coating on cracking furnace inner wall, reduce gap and defect, thereby improve the refractory performance of cracking furnace.

Description

Technical Field

[0001] This utility model relates to the field of refractory material spraying technology, specifically to a wet spraying device for high-alumina refractory materials used in pyrolysis furnaces. Background Technology

[0002] High-alumina refractory materials are refractory materials with high refractoriness, compressive strength and load softening temperature. They are mainly used for building high-temperature parts of various large blast furnaces, steelmaking furnaces, hot blast stoves, electric furnaces, rotary kilns, cracking furnaces and other thermal equipment.

[0003] During operation, the pyrolysis furnace operates in a complex and harsh environment characterized by high temperature and high pressure. High-alumina refractory materials are widely used for the protection of the inner walls of pyrolysis furnaces to improve their service life and operational safety.

[0004] Traditional high-alumina refractory spraying methods have many problems. For example, if the raw materials are not thoroughly stirred during the mixing process, the particle distribution of the high-alumina refractory may be uneven, which will affect the spraying quality on the inner wall of the pyrolysis furnace. Moreover, if the mixed slurry is not effectively filtered, solid impurities will be mixed in, which will cause defects in the sprayed coating and reduce its refractory performance.

[0005] In addition, in the wet spraying process, the wetness and viscosity of the mixed slurry have a crucial impact on the final spraying effect. However, previous equipment lacked effective means to detect these two key parameters, which may lead to problems such as uneven spraying, insufficient adhesion between the coating and the inner wall, and uneven and rough surfaces. These issues seriously affect the refractory effect of the pyrolysis furnace and increase the risk during the operation of the pyrolysis furnace. Utility Model Content

[0006] To address the aforementioned problems, this utility model discloses a wet spraying device for high-alumina refractory materials used in pyrolysis furnaces.

[0007] The technical solution of this utility model is: a wet spraying device for high-alumina refractory materials for pyrolysis furnace, including a filter mixing box with an internal stirring unit, a detection box located at the lower end of the filter mixing box and connected to its interior, a detection unit located on the side wall of the detection box, and a wet spraying gun connected to the interior of the detection box through a connecting pipe.

[0008] The filter mixing box has a dosing port at the top and a filter screen at the bottom. The side wall of the detection box has a through detection port, and the inner side of the through detection port has a sealing inner plate with multiple detection holes.

[0009] The detection unit includes a detection mounting box that is fastened to the outside of the through detection port, a vertical mounting plate that is rotatably connected to the inner wall of the detection mounting box, a detection disc that is connected to the upper end of the vertical mounting plate via a horizontally placed first micro hydraulic rod, a sealing outer plate that is connected to the lower end of the vertical mounting plate via a horizontally placed second micro hydraulic rod, and a rotating handle that drives the vertical mounting plate to rotate. The detection disc is equipped with detection probes that correspond one-to-one with the detection holes.

[0010] Furthermore, the stirring unit includes a stirring rod disposed in the filter mixing box, a rotary motor for driving the stirring rod to rotate, and multiple rotating scrapers disposed from top to bottom on the outer wall of the stirring rod.

[0011] Instructions: High-alumina refractory material, accelerator, and water are added to the filter mixing box through the dosing port. The stirring rod is driven by a rotary motor to rotate and mix the raw materials to form a slurry. This ensures the quality of the high-alumina refractory material coating on the inner wall of the pyrolysis furnace. While mixing, the rotating scrapers rotate synchronously and scrape off the residue on the inner wall of the filter mixing box, which helps to keep the filter mixing box clean and reduce equipment maintenance costs.

[0012] Furthermore, the side wall of the testing chamber is provided with a door, and the filter screen is rotatably connected to the bottom of the testing chamber.

[0013] Note: By setting limits on the rotational connection between the door and the filter screen at the bottom of the testing chamber, it is convenient to disassemble and install the filter screen and clean it regularly.

[0014] Furthermore, the testing and installation box is equipped with a transparent observation window.

[0015] Note: A transparent observation window is provided on the testing and installation box to allow for a direct view of the rotation of each component inside the box. This ensures that the testing disc and the sealing outer plate are aligned with the through-hole testing port, thereby achieving the testing or sealing effect and improving operational reliability.

[0016] Furthermore, the side wall of the testing box is provided with hooks for hanging the wet spray gun, and the bottom of the testing box is provided with a mounting base, and the bottom of the mounting base is provided with sliding wheels.

[0017] Note: When the wet spray gun is not in use, a hook is provided for easy hanging, which prevents the wet spray gun from being damaged by collision, squeezing or other factors due to improper placement, thus ensuring its service life. At the same time, a mounting base is provided at the bottom of the test box, and a sliding wheel is provided at the bottom of the mounting base, which facilitates quick transfer between different work areas, improving the flexibility and efficiency of the equipment.

[0018] The beneficial effects of this utility model are:

[0019] This utility model discloses a wet spraying device for high-alumina refractory materials used in pyrolysis furnaces. During use, a stirring unit mixes the various raw materials to form a slurry. Simultaneously, a filter screen removes solid impurities from the slurry, ensuring the quality of the high-alumina refractory material coating on the inner wall of the pyrolysis furnace. Before wet spraying, the handle is manually rotated to align the detection disc with the through-hole. The extension of the first micro-hydraulic rod drives the detection probes through their corresponding detection holes into the detection chamber to detect the wetness and viscosity of the slurry. Appropriate wetness ensures uniform dispersion of the high-alumina refractory material particles in the slurry, better wetting the inner wall of the pyrolysis furnace and improving the adhesion between the coating and the inner wall. Appropriate viscosity allows the slurry to be stably sprayed from the spray gun during the spraying process, contributing to a smooth and even coating on the inner wall of the pyrolysis furnace, reducing gaps and defects, and thus improving the refractory performance of the pyrolysis furnace. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the internal structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the external structure of this utility model;

[0022] Figure 3 This is an internal side view of the present invention.

[0023] The components are: 1-Filter mixing box, 10-Stirring unit, 100-Stirring rod, 101-Rotary motor, 102-Rotary scraper, 11-Adding port, 12-Filter screen, 2-Detection box, 20-Through detection port, 21-Sealing inner plate, 22-Detection hole, 23-Box door, 24-Hook, 25-Mounting chassis, 250-Sliding wheel, 3-Detection unit, 30-Detection mounting box, 300-Transparent observation window, 31-Vertical mounting plate, 32-Detection plate, 320-First micro hydraulic rod, 321-Detection probe, 33-Sealing outer plate, 330-Second micro hydraulic rod, 34-Rotating handle, and 4-Wet spray gun. Detailed Implementation

[0024] Example 1: As Figure 1 , 3 As shown, a wet spraying device for high-alumina refractory materials for a pyrolysis furnace includes a filter mixing box 1 with an internal stirring unit 10, a detection box 2 located at the lower end of the filter mixing box 1 and connected to its interior, a detection unit 3 located on the side wall of the detection box 2, and a wet spraying gun 4 connected to the interior of the detection box 2 via a connecting pipe. The wet spraying gun 4 adopts existing technology, such as a refractory material-specific nozzle of model GZ-3E-R.

[0025] The upper end of the filter mixing box 1 is provided with a feeding port 11, the bottom end of the filter mixing box 1 is provided with a filter screen 12, the side wall of the detection box 2 is provided with a through detection port 20, the inner side of the through detection port 20 is provided with a sealing inner plate 21, and the sealing inner plate 21 is provided with two detection holes 22. The filter screen 12 adopts existing technology, such as a filter device of model MSK-FT03.

[0026] like Figure 2 As shown, the detection unit 3 includes a detection mounting box 30 fastened to the outside of the through detection port 20, a vertical mounting plate 31 rotatably connected to the inner wall of the detection mounting box 30, a detection disc 32 connected to the upper end of the vertical mounting plate 31 via a horizontally placed first micro hydraulic rod 320, a sealing outer plate 33 connected to the lower end of the vertical mounting plate 31 via a horizontally placed second micro hydraulic rod 330, and a rotating handle 34 for driving the vertical mounting plate 31 to rotate. The detection disc 32 is equipped with detection probes 321 corresponding one-to-one with the detection holes 22. The first micro hydraulic rod 320, the second micro hydraulic rod 330, and the detection probes 321 all adopt existing technologies. For example, the first micro hydraulic rod 320 and the second micro hydraulic rod 330 can both be HR050 type small hydraulic power rods. There are two detection probes 321; the first one is a model... The second one uses the wettability detection probe of model M. V viscosity detection probe;

[0027] The stirring unit 10 includes a stirring rod 100 disposed in the filter mixing box 1, a rotary motor 101 that drives the stirring rod 100 to rotate, and eight rotating scrapers 102 disposed from top to bottom on the outer wall of the stirring rod 100. High-alumina refractory material, coagulant, and water are added into the filter mixing box 1 through the addition port 11. The rotary motor 101 drives the stirring rod 100 to rotate and stirs and mixes the various raw materials to form a mixed slurry. This can ensure the coating quality of the high-alumina refractory material on the inner wall of the cracking furnace. While stirring and mixing, the rotating scrapers 102 rotate synchronously and scrape off the residue on the inner wall of the filter mixing box 1, which helps to keep the filter mixing box 1 clean and reduce equipment maintenance costs. The rotary motor 101 adopts existing technology, such as the TDMK series synchronous motor.

[0028] The side wall of the test chamber 2 is provided with a door 23. The filter screen 12 is rotatably connected to the bottom of the test chamber 23. By setting the door 23 and the limitation of the rotatable connection between the filter screen 12 and the bottom of the test chamber 23, it is convenient to disassemble and install the filter screen 12 and clean it regularly.

[0029] The testing installation box 30 is provided with a transparent observation window 300. The purpose of providing a transparent observation window 300 on the testing installation box 30 is to intuitively understand the rotation of each component inside the testing installation box 30, so as to facilitate the alignment of the testing plate 32 and the sealing outer plate 33 with the through testing port 20, thereby achieving the effect of testing or sealing and improving the reliability of operation.

[0030] The side wall of the testing box 2 is provided with hooks 24 for hanging the wet spray gun 4. The bottom of the testing box 2 is provided with a mounting base 25, and the bottom of the mounting base 25 is provided with sliding wheels 250. When the wet spray gun 4 is not in use, the hooks 24 are provided to facilitate hanging it, so as to avoid the wet spray gun 4 being bumped, squeezed or otherwise damaged due to improper placement, thus ensuring its service life. At the same time, the mounting base 25 at the bottom of the testing box 2 and the sliding wheels 250 at the bottom of the mounting base 25 facilitate quick transfer between different work areas, improving the flexibility and efficiency of the equipment.

[0031] The method of using a wet spraying device for high-alumina refractory materials in a pyrolysis furnace according to this embodiment includes the following steps:

[0032] S1. High-alumina refractory material, accelerator, and water are added to the filter mixing tank 1 through the addition port 11. The stirring rod 100 is driven to rotate by the rotary motor 101, and the raw materials are stirred and mixed to form a slurry. At the same time, the rotating scrapers 102 rotate synchronously and scrape off the residue on the inner wall of the filter mixing tank 1. After the slurry is filtered through the filter screen 12, it falls into the detection box 2.

[0033] S2. Under normal circumstances, the sealing plate 33 is sealed at the through-hole detection port 20. When it is necessary to detect the wettability and viscosity of the mixed slurry, the sealing plate 33 is moved out of the through-hole detection port 20 by the compression action of the second micro hydraulic rod 330. Then, the rotating handle 34 is turned to rotate the vertical mounting plate 31. The detection discs 32 installed at the upper and lower ends of the vertical mounting plate 31 and the sealing plate 33 rotate synchronously. When the detection disc 32 rotates to be directly opposite the through-hole detection port 20, the extension action of the first micro hydraulic rod 320 drives the detection disc 32 to move into the through-hole detection port 20. At this time, each detection probe 321 extends into the detection box 2 through the corresponding detection hole 22 and detects the wettability and viscosity of the mixed slurry.

[0034] S3. When the wetness and viscosity meet the industry standards, remove the wet spray gun 4 from the hook 24 and spray the mixed slurry onto the inner wall of the pyrolysis furnace.

Claims

1. A wet spraying device for high-alumina refractory materials in a pyrolysis furnace, characterized in that, It includes a filter mixing box (1) with a stirring unit (10) inside, a test box (2) located at the lower end of the filter mixing box (1) and connected to its interior, a test unit (3) located on the side wall of the test box (2), and a wet spray gun (4) connected to the interior of the test box (2) through a connecting pipe. The filter mixing box (1) is provided with a feeding port (11) at the top and a filter screen (12) at the bottom. The side wall of the detection box (2) is provided with a through detection port (20). The inner side of the through detection port (20) is provided with a sealing inner plate (21). The sealing inner plate (21) is provided with multiple detection holes (22). The detection unit (3) includes a detection mounting box (30) fastened to the outside of the through detection port (20), a vertical mounting plate (31) rotatably connected to the inner wall of the detection mounting box (30), a detection disc (32) connected to the upper end of the vertical mounting plate (31) via a horizontally placed first micro hydraulic rod (320), a sealing outer plate (33) connected to the lower end of the vertical mounting plate (31) via a horizontally placed second micro hydraulic rod (330), and a rotating handle (34) for driving the vertical mounting plate (31) to rotate. The detection disc (32) is provided with detection probes (321) corresponding one-to-one with the detection holes (22).

2. The wet spraying equipment for high-alumina refractory materials in a pyrolysis furnace according to claim 1, characterized in that, The stirring unit (10) includes a stirring rod (100) disposed in the filter mixing box (1), a rotary motor (101) for driving the stirring rod (100) to rotate, and a plurality of rotating scrapers (102) disposed from top to bottom on the outer wall of the stirring rod (100).

3. The wet spraying equipment for high-alumina refractory materials in a pyrolysis furnace according to claim 1, characterized in that, The side wall of the test box (2) is provided with a door (23), and the filter screen (12) is rotatably connected to the bottom of the test box (2).

4. The wet spraying equipment for high-alumina refractory materials in a pyrolysis furnace according to claim 1, characterized in that, The testing installation box (30) is provided with a transparent observation window (300).

5. The wet spraying equipment for high-alumina refractory materials in a pyrolysis furnace according to claim 1, characterized in that, The side wall of the test box (2) is provided with a hook (24) for hanging the wet spray gun (4), and the bottom of the test box (2) is provided with a mounting base (25), and the bottom of the mounting base (25) is provided with a sliding wheel (250).

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