Anti-coking washing cooler and decoking method

Abstract

The invention relates to an anti-coking washing cooler which comprises a washing cooler inner cylinder, the washing cooler inner cylinder is horizontally arranged, one end of a cylinder body of the washing cooler inner cylinder is covered with a flange cover, and a thermocouple is arranged on the inner wall of the washing cooler inner cylinder in the extending direction; the device further comprises a scraper matched with the thermocouple, and the scraper is driven by a horizontal movement module arranged on the flange cover to scrape coke on the thermocouple. The coke scraping device has the beneficial effects that by arranging the scraper matched with the thermocouple and driving the scraper to scrape coke on the thermocouple through the horizontal movement module, the problem of coking of the thermocouple on the inner barrel of the washing cooler is solved, and in the running process of the washing cooler, the scraper can continuously move to scrape coke on the thermocouple back and forth, so that the coke scraping efficiency is improved. And the problem of temperature detection distortion caused by thermocouple coking is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of washing coolers, and in particular to an anti-coking washing cooler and a decoking method. Background Art

[0002] The scrubber cooler is connected to the outlet of the gasifier. It is responsible for the initial scrubbing and cooling of the raw coal gas at the outlet of the gasifier. During the operation of the gasifier, a large amount of airflow brings a part of the coal coke into the inner cylinder of the scrubber cooler. After a long period of operation, the inner cylinder of the scrubber cooler will be coked. The coking will wrap the thermocouple at the outlet of the gasifier, making the measured temperature display lower than the operating process indicator temperature, unable to reflect the outlet temperature of the gasifier, and lose the significance of guiding operation. At the same time, due to coking, the outlet airflow channel of the gasifier becomes smaller, the carryover increases, causing system blockage, long-term blockage and corrosion of the inner wall of the scrubber cooler inner cylinder, affecting the long-term operation of the gasifier.

[0003] In the prior art, a spray water line is often added at the head of the washer cooler to connect to the inner cylinder of the washer cooler, and a spray ring is set. High-pressure jet gas water is used to flush the coke from the inner cylinder of the washer cooler. However, during the operation of the washer cooler, the spray ring cannot operate for a long time, and coke will still appear inside the cooling washer. The thermocouple will still be wrapped by the coke, thereby affecting the temperature detection. At the same time, the added spray ring will also be wrapped by the coke, affecting the disassembly and inspection of the washer cooler head. Summary of the invention

[0004] The object of the present invention is to provide a coking-proof washing cooler and a decoking method to solve the above-mentioned problems existing in the prior art.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] A coking-proof washing cooler comprises an inner cylinder of the washing cooler, which is arranged horizontally, and a flange cover is provided at one end cover of the cylinder body of the inner cylinder of the washing cooler, and a thermocouple is arranged on the inner wall of the inner cylinder of the washing cooler along the extension direction; and also comprises a scraper matching the thermocouple, and the scraper is driven by a horizontal motion module arranged on the flange cover to scrape the thermocouple.

[0007] The beneficial effects of the present invention are as follows: by setting a scraper matching the thermocouple and driving the scraper to scrape the thermocouple through a horizontal motion module, the coking problem of the thermocouple on the inner drum of the washing cooler is solved; and during the operation of the washing cooler, the scraper can move continuously to scrape the thermocouple back and forth, thereby avoiding the problem of temperature detection distortion caused by the coking of the thermocouple.

[0008] Based on the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the scraper is an annular blade, which is arranged to fit the inner drum of the washing cooler and is provided with a groove corresponding to the thermocouple.

[0010] A further beneficial effect of the above method is that while scraping the thermocouple, the inner wall of the washing cooler is also scraped, thereby avoiding serious coking on the inner wall of the inner drum of the washing cooler, which causes corrosion of the inner wall and affects the long-term stable operation of the washing cooler.

[0011] Furthermore, the horizontal motion module includes a box body arranged on the outside of the flange cover, and a horizontal sliding mechanism and a driving mechanism are arranged on the box body. The horizontal sliding mechanism includes a sliding rod, a slider and a telescopic rod. The two ends of the sliding rod are respectively fixed on the flange cover and the box body. A slider is slidingly sleeved on the sliding rod. One end of the telescopic rod passes through the flange cover and is fixedly connected to a fixed cylinder on the central axis of the scraper, and the other end is fixed on the slider. The slider is movably connected to the driving mechanism.

[0012] A further beneficial effect of the above is that the combined movement of the slide rod, the slider and the telescopic rod makes the movement of the scraper smoother, reducing abnormal wear caused by excessive friction of the scraper against the inner drum of the washing cooler due to scraper deviation.

[0013] Furthermore, the driving mechanism includes a swing arm and a hydraulic cylinder. The rear ends of the swing arm and the hydraulic cylinder are rotatably connected to the box body through the first rotating shaft and the second rotating shaft respectively. The front end of the swing arm is rotatably connected to the slider, and the output shaft of the hydraulic cylinder is rotatably connected to the middle part of the swing arm.

[0014] The above-mentioned further beneficial effect is that the combination of the swing arm and the hydraulic cylinder can avoid the problem that the hydraulic cylinder is integrated on the slide rod, resulting in the slide rod being compact and difficult to maintain. At the same time, the rotation of the swing arm is used to drive the movement of the slide bar, which can reduce the size of the hydraulic cylinder and the ejection length of the output shaft, thereby shortening the working time of the hydraulic cylinder, reducing the heat generation of the hydraulic cylinder, and increasing the service life of the hydraulic cylinder, which is beneficial to the long-term operation of the scraper. At the same time, a high-output hydraulic cylinder is not required, which can bring better economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of an anti-coking washing cooler of the present invention;

[0016] Figure 2 This is a schematic diagram of the internal structure of an anti-coking washing cooler of the present invention;

[0017] Figure 3 The present invention is a schematic diagram of the structure of a scraper and thermocouple for a washing cooler for preventing coking.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0019] 1. Scraper; 11. Groove; 2. Fixed cylinder; 3. Horizontal motion module; 31. Horizontal sliding mechanism; 311. Slide bar; 312. Sliding block; 313. Telescopic rod; 32. Driving mechanism; 321. Swing arm; 322. Hydraulic cylinder; 323. Connecting block; 324. First rotating axis; 325. Second rotating axis; 33. Box; 4. Cooler inner cylinder; 41. Flange cover; 42. Cylinder body; 5. Thermocouple; 6. Sealing filler. DETAILED DESCRIPTION

[0020] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0021] Example 1

[0022] like Figure 1 As shown, an anti-coking washing cooler includes a washing cooler inner cylinder 4, which is horizontally arranged, and one end cover of the cylinder body 42 of the washing cooler inner cylinder 4 is provided with a flange cover 41, and a thermocouple 5 is arranged on the inner wall of the washing cooler inner cylinder 4 along the extension direction; it also includes a scraper 1 matching the thermocouple 5, and the scraper 1 is driven by a horizontal motion module 3 arranged on the flange cover 41 to scrape the thermocouple 5.

[0023] By setting a scraper 1 that matches the thermocouple 5 and driving the scraper 1 to scrape the thermocouple 5 through the horizontal motion module 3, the coking problem of the thermocouple 5 on the inner drum 4 of the washing cooler is solved. During the operation of the washing cooler, the scraper 1 can move continuously to scrape the thermocouple 5 back and forth, thereby avoiding the problem of temperature detection distortion caused by the coking of the thermocouple 5.

[0024] Example 2

[0025] like Figures 2 to 3 As shown, this embodiment is a further improvement on the basis of embodiment 1, and the details are as follows:

[0026] The scraper 1 is an annular blade, which is arranged in close contact with the inner drum 4 of the washing cooler, and is provided with a groove 11 corresponding to the thermocouple 5. While scraping the thermocouple 5, the inner wall of the washing cooler 4 is also scraped to avoid serious coking on the inner wall of the inner drum 4 of the washing cooler, which causes the inner wall to be corroded and affects the long-term stable operation of the washing cooler.

[0027] Example 3

[0028] like Figure 1 As shown, this embodiment is a further improvement on the basis of embodiment 2, and the details are as follows:

[0029] The horizontal motion module 3 includes a box body 33 arranged outside the flange cover 41, and a horizontal sliding mechanism 31 and a driving mechanism 32 are arranged on the box body 33. The horizontal sliding mechanism 31 includes a slide bar 311, a slider 312 and a telescopic rod 313. The two ends of the slide bar 311 are respectively fixed on the flange cover 41 and the box body 33. The slide bar 311 is slidably sleeved with a slider 312. One end of the telescopic rod 313 penetrates the flange cover 41 and is fixedly connected to the fixed cylinder 2 on the central axis of the scraper 1, and the other end is fixed on the slider 312. The slider 312 is movably connected to the driving mechanism 32. The combined movement of the slide bar 311, the slider 312 and the telescopic rod 313 makes the movement of the scraper 1 more stable, and reduces the abnormal wear caused by the scraper 1 excessively rubbing against the inner cylinder 4 of the washing cooler due to the deviation of the scraper 1.

[0030] Two slide bars 311 are arranged outside the box body 33. The double slide bars 311 can further enhance the stability of the movement of the scraper 1.

[0031] Example 4

[0032] like Figure 1 As shown, this embodiment is a further improvement on the basis of embodiment 3, and the details are as follows:

[0033] The driving mechanism 32 includes a swing arm 321 and a hydraulic cylinder 322. The rear ends of the swing arm 321 and the rear ends of the hydraulic cylinder 322 are rotatably connected to the box body 33 through the first rotating shaft 324 and the second rotating shaft 325 respectively. The front end of the swing arm 321 is rotatably connected to the slider 312, and the output shaft of the hydraulic cylinder 322 is rotatably connected to the middle of the swing arm 321. The combination of the swing arm 321 and the hydraulic cylinder 322 can avoid the problem that the hydraulic cylinder 322 is integrated into the slide bar 311, which makes the slide bar 311 compact and difficult to maintain. At the same time, the rotation of the swing arm 321 drives the slide bar 312 to move, which can reduce the size of the hydraulic cylinder 322 and the ejection length of the output shaft, thereby shortening the working time of the hydraulic cylinder 322, reducing the heat generation of the hydraulic cylinder 322, and increasing the service life of the hydraulic cylinder 322, which is beneficial to the long-term operation of the scraper 1. At the same time, a hydraulic cylinder 322 with high output power is not required, which can bring better economic benefits.

[0034] Example 5

[0035] like Figure 1 As shown, this embodiment is a further improvement on the basis of embodiment 4, and the details are as follows:

[0036] The driving mechanism 32 further includes a connecting block 323, and the connecting block 323 is rotatably provided between the swing arm 321 and the slider 312. The connecting block 323 converts the force in the circumferential direction of the swing arm 321 into the force in the horizontal direction along the slider 311, which can extend the time for the swing arm 321 to act on the slider 312, thereby extending the movement distance of the slider 312 on the slider 311, and lengthening the scraping interval of the scraper 1 in the inner drum 4 of the washing cooler.

[0037] The flange cover 41 is provided with a sealing packing 6, and the telescopic rod 313 penetrates the sealing packing 6 and extends into the inner cylinder 4 of the washing cooler. The sealing packing 6 can prevent leakage of the inner cylinder 4 of the washing cooler. In the specific implementation, 12 circles of sealing packing 6 are provided, and the thickness of a single circle of sealing packing 6 is 16 mm.

[0038] Example 6

[0039] A method for decoking a washing cooler, using the anti-coking washing cooler of Example 5, comprises the following steps:

[0040] The output shaft of the hydraulic cylinder 322 is controlled to extend. Under the action of the output shaft of the hydraulic cylinder 322, the rear end of the swing arm 321 rotates clockwise around the first rotating shaft 324. Under the action of the connecting block 323, the front end of the swing arm 321 drives the slider 312 to move on the slide rod 311 toward the direction close to the flange cover 41. The telescopic rod 313 pushes the fixed cylinder 2 and the scraper 1 into the deep of the inner cylinder 4 of the washing cooler. The scraper 1 scrapes off the coke on the surface of the thermocouple 5 and the inner wall of the inner cylinder 4 of the washing cooler. The output shaft of the control hydraulic cylinder 322 is retracted. Under the action of the output shaft of the hydraulic cylinder 322, the rear end of the swing arm 321 rotates counterclockwise around the first rotating shaft 324. Under the action of the connecting block 323, the front end of the swing arm 321 drives the slider 312 to move on the slide rod 311 in the direction away from the flange cover 41. The telescopic rod 313 moves the fixed cylinder 2 and the scraper 1 out of the inner cylinder 4 of the washing and cooler, and the scraper 1 scrapes off the coke on the surface of the thermocouple 5 and the inner wall of the inner cylinder 4 of the washing and cooler again.

[0041] The decoking process can be performed manually or automatically by operating the hydraulic cylinder 322 from an external control room.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-coking washing cooler, characterized in that: The invention comprises a washing cooler inner cylinder (4), wherein the washing cooler inner cylinder (4) is arranged horizontally, and one end cover of the cylinder body (42) of the washing cooler inner cylinder (4) is provided with a flange cover (41), and a thermocouple (5) is arranged on the inner wall of the washing cooler inner cylinder (4) along the extension direction; and further comprises a scraper (1) matching the thermocouple (5), wherein the scraper (1) is driven by a horizontal motion module (3) arranged on the flange cover (41) to scrape the thermocouple (5).

2. The anti-coking wash cooler according to claim 1, characterized in that: The scraper (1) is an annular blade, which is arranged to fit the inner drum (4) of the washing cooler and is provided with a groove (11) corresponding to the thermocouple (5).

3. The anti-coking wash cooler according to claim 2, characterized in that: The horizontal motion module (3) comprises a box body (33) arranged outside the flange cover (41), the box body (33) is provided with a horizontal sliding mechanism (31) and a driving mechanism (32), the horizontal sliding mechanism (31) comprises a sliding rod (311), a sliding block (312) and a telescopic rod (313), the two ends of the sliding rod (311) are respectively fixed to the flange cover (41) and the box body (33), the sliding block (312) is slidably sleeved on the sliding rod (311), one end of the telescopic rod (313) passes through the flange cover (41) and is fixedly connected to a fixed cylinder (2) on the central axis of the scraper (1), and the other end is fixed to the sliding block (312), and the sliding block (312) is movably connected to the driving mechanism (32).

4. The anti-coking wash cooler according to claim 3, characterized in that: Two sliding rods (311) are arranged outside the box body (33).

5. The anti-coking wash cooler according to claim 4, characterized in that: The driving mechanism (32) comprises a swing arm (321) and a hydraulic cylinder (322); the rear ends of the swing arm (321) and the hydraulic cylinder (322) are rotatably connected to the box (33) via a first rotating shaft (324) and a second rotating shaft (325), respectively; the front end of the swing arm (321) is rotatably connected to the slider (312); and the output shaft of the hydraulic cylinder (322) is rotatably connected to the middle of the swing arm (321).

6. The anti-coking wash cooler according to claim 5, characterized in that: The driving mechanism (32) further comprises a connecting block (323), and the connecting block (323) is rotatably arranged between the swing arm (321) and the sliding block (312).

7. The scraper device for preventing coking of a wash cooler according to claim 6, characterized in that: A sealing filler (6) is provided on the flange cover (41), and the telescopic rod (313) penetrates the sealing filler (6) and extends into the inner cylinder (4) of the washing and cooling device.

8. A method for decoking a wash cooler, characterized in that: The use of the anti-coking washing cooler as claimed in claim 7 comprises the following steps: controlling the output shaft of the hydraulic oil cylinder (322) to extend, under the action of the output shaft of the hydraulic oil cylinder (322), the rear end of the swing arm (321) rotates clockwise around the first rotating shaft (324), the front end of the swing arm (321) drives the slider (312) on the slide rod (311) to move in the direction close to the flange cover (41), the telescopic rod (313) pushes the fixed cylinder (2) and the scraper (1) into the deep of the inner cylinder (4) of the washing cooler, and the scraper (1) scrapes off the surface of the thermocouple (5) and the washing cooler. The output shaft of the hydraulic cylinder (322) is controlled to be retracted. Under the action of the output shaft of the hydraulic cylinder (322), the rear end of the swing arm (321) rotates counterclockwise around the first rotating shaft (324). Under the action of the connecting block (323), the front end of the swing arm (321) drives the slider (312) to move on the slide rod (311) in a direction away from the flange cover (41). The telescopic rod (313) moves the fixed cylinder (2) and the scraper (1) out of the inner cylinder (4) of the washing cooler. The scraper (1) scrapes off the coke on the surface of the thermocouple (5) and the inner wall of the inner cylinder (4) of the washing cooler again.

9. The decoking method of a wash cooler according to claim 8, characterized in that: The decoking process can be performed manually or automatically by operating the hydraulic cylinder (322) from an external control room.

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