Cleaning device for high-temperature raw gas leading-out pipeline

Abstract

The utility model relates to a high-temperature raw gas leading-out pipeline cleaning device which comprises a dust remover, one side of the dust remover is fixedly connected with a transverse leading-out pipe, the transverse leading-out pipe is communicated with a vertical leading-out pipe, the lower end of the vertical leading-out pipe is fixedly provided with a quenching pipe, and one end of the transverse leading-out pipe and one end of the vertical leading-out pipe are connected with a hydraulic cylinder. One end of the piston rod is connected with the piston, and the other end of the piston rod is connected with the tar residue scraper. The hydraulic cylinder is divided into a rodless cavity and a rod cavity, the rodless cavity is connected with the hydraulic station through a hydraulic pipe I, and the rod cavity is connected with the hydraulic station through a hydraulic pipe II. And a magnetization limit switch I and a magnetization limit switch II are fixedly mounted on the hydraulic cylinder. The device has the beneficial effects of reasonable structural design, convenience in operation, low processing and manufacturing cost, simplicity in installation and operation, safety and reliability in use, and capability of solving the problem of pipeline blockage caused by gradual deposition of tar and dust in a leading-out pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature raw coal gas cleaning devices, and particularly relates to a cleaning device for a high-temperature raw coal gas export pipeline. Background Technique

[0002] After the high-temperature raw coal gas is dust-removed by a high-temperature dust collector, the temperature of the raw coal gas drops, and the tar in the raw coal gas will condense and precipitate in the export pipeline, gradually depositing on the pipe wall. Especially when the pipeline heat preservation is not good, the tar is easy to condense on the pipe wall. The solid particles in the flue gas settle on its surface to form a caking layer, which will eventually cause the export channel of the high-temperature raw coal gas export pipeline to gradually become smaller, thereby changing the hydraulic characteristics of the entire pipeline system. When the pipeline cross-section decreases, the export resistance of the high-temperature raw coal gas increases, affecting the stable operation of the system, and even causing the high-temperature raw coal gas export pipeline to be blocked, resulting in the forced shutdown of the system.

[0003] At the same time, the high-temperature raw coal gas pipeline has the following characteristics: 1) The high-temperature raw coal gas flowing in the pipe contains up to 80-120 grams of tar per standard cubic meter. Since the tar begins to precipitate at about 450°C and is easy to adhere to the pipe wall, although the temperature of the high-temperature raw coal gas is above 700°C, when the pipeline heat preservation is not good, the temperature of the pipe wall will be lower than 450°C; 2) The flow velocity of the cross-section in the high-temperature raw coal gas pipeline is uneven. When a large amount of flue gas is generated during the coal charging of the coke oven, the dust content is also high, and even solid particles with larger particle sizes enter the pipeline, and the flue gas temperature also fluctuates. However, when the flue gas volume decreases at the end of coking, the dust content also decreases, and the flow velocity of the pipeline cross-section decreases. Therefore, this unevenness easily leads to the settlement of dust particles and the precipitation of tar, and ultimately easily causes the blockage of the pipeline. Content of the Utility Model

[0004] The purpose of the utility model is to provide a cleaning device for a high-temperature raw coal gas export pipeline with reasonable structural design, convenient operation, low processing and manufacturing cost, simple installation and operation, safe and reliable use, and capable of solving the problem of tar and dust gradually depositing in the export pipeline and causing pipeline blockage.

[0005] A cleaning device for a high-temperature raw coal gas export pipeline of the utility model comprises a dust collector. One side of the dust collector is fixedly connected with a horizontal export pipe. A vertical export pipe is communicated with the horizontal export pipe. A quench pipe is fixedly installed at the lower end of the vertical export pipe. One end of the horizontal export pipe and the vertical export pipe is connected with a hydraulic cylinder. A piston rod is connected in the hydraulic cylinder. One end of the piston rod is connected with a piston, and the other end of the piston rod is connected with a tar slag scraper.

[0006] The hydraulic cylinder is divided into a rodless cavity and a rod cavity. The rodless cavity is connected with a hydraulic station through a hydraulic pipe I, and the rod cavity is connected with the hydraulic station through a hydraulic pipe II.

[0007] A hydraulic cylinder is connected to one end of the horizontal discharge pipe and the vertical discharge pipe. A piston rod is connected in the hydraulic cylinder. One end of the piston rod is connected to a piston, and the other end of the piston rod is connected to a tar residue scraper. When it is necessary to scrape the tar residue in the vertical discharge pipe and the horizontal discharge pipe, the hydraulic station is started. Through program control, hydraulic oil enters the rodless cavity through hydraulic pipe I, pushing the piston to move. The hydraulic oil in the rod chamber flows back to the hydraulic station through hydraulic pipe II. Finally, the piston rod drives the tar residue scraper to move, scraping the tar residue on the inner walls of the vertical discharge pipe and the horizontal discharge pipe. After the tar residue scraping is completed, through program control, hydraulic oil enters the rod chamber through hydraulic pipe II, pushing the piston to move in the reverse direction. The hydraulic oil in the rodless cavity flows back to the hydraulic station through hydraulic pipe I, completing the recovery operation of the tar residue scraper, and thus completing the operation of scraping the tar residue in the vertical discharge pipe and the horizontal discharge pipe. The operation is safe, reliable, fast and thorough.

[0008] A magnetization limit switch I and a magnetization limit switch II are fixedly installed on the hydraulic cylinder.

[0009] For the magnetization limit switch I and the magnetization limit switch II fixedly installed on the hydraulic cylinder, when the magnetization limit switch I sends a signal, the hydraulic station stops supplying hydraulic oil, indicating that the recovery is in place. When the magnetization limit switch II sends a signal, the hydraulic station stops supplying hydraulic oil, indicating that the tar residue scraper is pushed out in place.

[0010] The tar residue scraper is of a cylindrical structure. Square holes are provided on the side wall of the tar residue scraper, and rib plates are fixedly installed on the inner wall of the tar residue scraper 7.

[0011] Setting the tar residue scraper as a cylindrical structure can better fit the inner walls of the horizontal discharge pipe and the vertical discharge pipe, and can scrape the tar residue adhering to the inner walls of the horizontal discharge pipe and the vertical discharge pipe more thoroughly and conveniently; the rib plates fixedly installed on the inner wall of the tar residue scraper can increase the strength of the tar residue scraper and prevent the tar residue scraper from deforming or being damaged when scraping the tar residue; square holes are provided on the side wall of the tar residue scraper, and during the process of the tar residue scraper scraping the tar residue, the raw coal gas can be discharged through the square holes without affecting the raw coal gas discharge pressure.

[0012] A raw coal gas pipeline is fixedly connected to the side wall of the quench pipe.

[0013] The beneficial effects of the present utility model:

[0014] 1) A hydraulic cylinder is connected to one end of the horizontal discharge pipe and the vertical discharge pipe. A piston rod is connected in the hydraulic cylinder. One end of the piston rod is connected to a piston, and the other end of the piston rod is connected to a tar slag scraper. When it is necessary to scrape the tar slag in the vertical discharge pipe and the horizontal discharge pipe, the hydraulic station is started. Through program control, hydraulic oil enters the rodless cavity through hydraulic pipe I, pushing the piston to move. The hydraulic oil in the rod chamber flows back to the hydraulic station through hydraulic pipe II. Finally, the piston rod drives the tar slag scraper to move, scraping the tar slag on the inner walls of the vertical discharge pipe and the horizontal discharge pipe. After the tar slag scraping is completed, through program control, hydraulic oil enters the rod chamber through hydraulic pipe II, pushing the piston to move in the reverse direction. The hydraulic oil in the rodless cavity flows back to the hydraulic station through hydraulic pipe I, completing the recovery operation of the tar slag scraper, and thus completing the operation of scraping the tar slag in the vertical discharge pipe and the horizontal discharge pipe. The operation is safe, reliable, fast, and thorough.

[0015] 2) A magnetization limit switch I and a magnetization limit switch II are fixedly installed on the hydraulic cylinder. When the magnetization limit switch I emits a signal, the hydraulic station stops supplying hydraulic oil, indicating that the recovery is in place. When the magnetization limit switch II emits a signal, the hydraulic station stops supplying hydraulic oil, indicating that the tar slag scraper is pushed out in place.

[0016] 3) The tar slag scraper is of a cylindrical structure, which can better fit the inner walls of the horizontal discharge pipe and the vertical discharge pipe, and can scrape the tar slag adhering to the inner walls of the horizontal discharge pipe and the vertical discharge pipe more thoroughly and conveniently. The rib plates fixedly installed on the inner wall of the tar slag scraper can increase the strength of the tar slag scraper and prevent the tar slag scraper from deforming or being damaged when scraping the tar slag. Square holes are provided on the side wall of the tar slag scraper, through which the raw coal gas can be discharged during the process of the tar slag scraper scraping the tar slag, without affecting the raw coal gas discharge pressure.

[0017] 4) The device has a reasonable structural design, convenient operation, low processing and manufacturing cost, simple installation and operation, and safe and reliable use. It can solve the problem of tar and dust gradually depositing in the discharge pipe, causing pipe blockage. It has been put into production and use, and the cleaning effect is good, which is worthy of wide promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a top view of the tar slag scraper in the present utility model;

[0020] Figure 3 is a side view of the tar slag scraper in the present utility model;

[0021] Figure 4 is a sectional view taken along line A-A of the present utility model;

[0022] Figure 5 This is the sectional view taken along line B-B in the present utility model.

[0023] In the figure: 1. Dust collector, 2. Horizontal outlet pipe, 3. Vertical outlet pipe, 4. Quenching pipe, 5. Raw coal gas pipeline, 6. Hydraulic station, 7. Tar residue scraper, 8. Hydraulic cylinder, 9. Piston rod, 10. Rod chamber, 11. Rodless chamber, 12. Magnetized limit switch I, 13. Magnetized limit switch II, 14. Hydraulic pipe I, 15. Hydraulic pipe II, 16. Piston, 71. Rib plate, 72. Square hole. Specific embodiments

[0024] Embodiment 1.

[0025] The following will further describe the present utility model in conjunction with the attached Figures 1-5 drawings.

[0026] The present utility model includes a dust collector 1, a horizontal outlet pipe 2, a vertical outlet pipe 3, a quenching pipe 4, a raw coal gas pipeline 5, a hydraulic station 6, a tar residue scraper 7, a hydraulic cylinder 8, a piston rod 9, a rod chamber 10, a rodless chamber 11, a magnetized limit switch I 12, a magnetized limit switch II 13, a hydraulic pipe I 14, a hydraulic pipe II 15, and a piston 16; the specific structure includes a dust collector 1, a horizontal outlet pipe 2 is fixedly connected to one side of the dust collector 1, a vertical outlet pipe 3 is communicated with the horizontal outlet pipe 2, a quenching pipe 4 is fixedly installed at the lower end of the vertical outlet pipe 3, one ends of the horizontal outlet pipe 2 and the vertical outlet pipe 3 are connected to the hydraulic cylinder 8, a piston rod 9 is connected in the hydraulic cylinder 8, one end of the piston rod 9 is connected to the piston 16, and the other end of the piston rod 9 is connected to the tar residue scraper 7.

[0027] The hydraulic cylinder 8 is divided into a rodless chamber 11 and a rod chamber 10. The rodless chamber 11 is connected to the hydraulic station 6 through a hydraulic pipe I 14, and the rod chamber 10 is connected to the hydraulic station 6 through a hydraulic pipe II 15.

[0028] The magnetized limit switch I 12 and the magnetized limit switch II 13 are fixedly installed on the hydraulic cylinder 8.

[0029] Usage method: Start the hydraulic station 6. Through program control, the hydraulic oil enters the rodless cavity 11 through the hydraulic pipe I 14, pushing the piston 16 to move. The hydraulic oil in the rod cavity 10 flows back to the hydraulic station 6 through the hydraulic pipe II 15. Finally, the tar residue scraper 7 is driven by the piston rod 9 to scrape the tar residue on the vertical outlet pipe 3 and the horizontal outlet pipe 2. After the tar residue scraping is completed, through program control, the hydraulic oil enters the rod cavity 10 through the hydraulic pipe II 15, pushing the piston 16 to move in the reverse direction. The hydraulic oil in the rodless cavity 11 flows back to the hydraulic station 6 through the hydraulic pipe I 14, completing the recovery operation of the tar residue scraper 7. To make the scraping of the tar residue in the vertical outlet pipe 3 and the horizontal outlet pipe 2 more thorough, the above actions can be repeated 2 - 3 times, and the hydraulic station 6 is started once every 8 hours. The piston 16 and the piston rod 9 are used to drive the tar residue scraper 7 to perform the tar residue scraping operation; the tar residue scraped in the vertical outlet pipe 3 directly enters the quench pipe 4 and is finally flushed into the tar - ammonia water tank by ammonia water. The tar residue scraped in the horizontal outlet pipe 2 directly enters the dust collector 1 and is finally discharged together with the filter material of the dust collector 1. The high - temperature raw coal gas enters the quench pipe 4 from the dust collector 1. In the quench pipe 4, the high - temperature raw coal gas contacts the ammonia water. After the temperature of the raw coal gas drops from about 550 °C to about 50 °C, it enters the subsequent system through the raw coal gas pipeline 5.

[0030] Embodiment 2.

[0031] The following will further illustrate the present utility model in conjunction with the attached Figures 1-5 drawings.

[0032] The present utility model includes a dust collector 1, a horizontal outlet pipe 2, a vertical outlet pipe 3, a quench pipe 4, a raw coal gas pipeline 5, a hydraulic station 6, a tar residue scraper 7, a hydraulic cylinder 8, a piston rod 9, a rod cavity 10, a rodless cavity 11, a magnetic limit switch I 12, a magnetic limit switch II 13, a hydraulic pipe I 14, a hydraulic pipe II 15, a piston 16, a rib plate 71, and a square hole 72; the specific structure includes a dust collector 1. One side of the dust collector 1 is fixedly connected with a horizontal outlet pipe 2. The horizontal outlet pipe 2 is communicated with a vertical outlet pipe 3. The lower end of the vertical outlet pipe 3 is fixedly installed with a quench pipe 4. One end of the horizontal outlet pipe 2 and the vertical outlet pipe 3 is connected to a hydraulic cylinder 8. The hydraulic cylinder 8 is connected with a piston rod 9. One end of the piston rod 9 is connected to a piston 16, and the other end of the piston rod 9 is connected to a tar residue scraper 7.

[0033] The hydraulic cylinder 8 is divided into a rodless cavity 11 and a rod cavity 10. The rodless cavity 11 is connected to the hydraulic station 6 through the hydraulic pipe 14I, and the rod cavity 10 is connected to the hydraulic station 6 through the hydraulic pipe II 15.

[0034] The hydraulic cylinder 8 is fixedly installed with a magnetic limit switch I 12 and a magnetic limit switch II 13.

[0035] The tar residue scraper 7 has a cylindrical structure. Square holes 72 are formed in the side wall of the tar residue scraper 7, and rib plates 71 are fixedly installed on the inner wall of the tar residue scraper 7.

[0036] The tar residue scraper 7 is made of heat-resistant 316L stainless steel.

[0037] Usage method: Start the hydraulic station 6. Through program control, hydraulic oil enters the rodless cavity 11 through the hydraulic pipe Ⅰ14, pushing the piston 16 to move. The hydraulic oil in the rod cavity 10 flows back to the hydraulic station 6 through the hydraulic pipe Ⅱ15. Finally, the tar residue scraper 7 is driven by the piston rod 9 to move to scrape the tar residue on the vertical outlet pipe 3 and the horizontal outlet pipe 2. After the tar residue scraping is completed, through program control, the hydraulic oil enters the rod cavity 10 through the hydraulic pipe Ⅱ15, pushing the piston 16 to move in the reverse direction. The hydraulic oil in the rodless cavity 11 flows back to the hydraulic station 6 through the hydraulic pipe Ⅰ14, completing the recovery operation of the tar residue scraper 7. To make the scraping of the tar residue in the vertical outlet pipe 3 and the horizontal outlet pipe 2 more thorough, the above actions can be repeated 2 - 3 times, and the hydraulic station 6 is started once every 8 hours. The piston 16 and the piston rod 9 are used to drive the tar residue scraper 7 to perform the tar residue scraping operation; the tar residue scraped from the vertical outlet pipe 3 directly enters the quench pipe 4 and finally is flushed into the tar-ammonia water tank by ammonia water. The tar residue scraped from the horizontal outlet pipe 2 directly enters the dust collector 1 and finally is discharged together with the filter material of the dust collector 1. The high-temperature raw coal gas enters the quench pipe 4 from the dust collector 1. In the quench pipe 4, the high-temperature raw coal gas contacts with ammonia water. After the temperature of the raw coal gas drops from about 550 °C to about 50 °C, it enters the subsequent system through the raw coal gas pipeline 5; setting the tar residue scraper 7 as a cylindrical structure can better fit the inner walls of the horizontal outlet pipe 2 and the vertical outlet pipe 3, and can scrape the tar residue adhering to the inner walls of the horizontal outlet pipe 2 and the vertical outlet pipe 3 more thoroughly and conveniently; the rib plates 71 fixedly installed on the inner wall of the tar residue scraper 7 can increase the strength of the tar residue scraper 7 and prevent the tar residue scraper 7 from deforming or being damaged during the scraping of the tar residue; square holes 72 are formed in the side wall of the tar residue scraper 7, so that during the process of the tar residue scraper 7 scraping the tar residue, the raw coal gas can be exported through the square holes 72 without affecting the export pressure of the raw coal gas.

Claims

1. A high-temperature raw gas outlet pipeline cleaning device, characterized in that: The dust collector (1) comprises a dust collector (1), one side of which is fixedly connected to a transverse outlet pipe (2), the transverse outlet pipe (2) is connected to a vertical outlet pipe (3), a quenching pipe (4) is fixedly installed at the lower end of the vertical outlet pipe (3), one end of the transverse outlet pipe (2) and the vertical outlet pipe (3) are connected to a hydraulic cylinder (8), a piston rod (9) is connected to the hydraulic cylinder (8), one end of the piston rod (9) is connected to a piston (16), and the other end of the piston rod (9) is connected to a tar residue scraper (7).

2. A high-temperature raw gas outlet pipeline cleaning device as claimed in claim 1, characterized in that: The hydraulic cylinder (8) is divided into a rodless chamber (11) and a rod chamber (10); the rodless chamber (11) is connected to the hydraulic station (6) via a hydraulic pipe I (14), and the rod chamber (10) is connected to the hydraulic station (6) via a hydraulic pipe II (15).

3. A high-temperature raw gas outlet pipeline cleaning device as claimed in claim 2, characterized in that: A magnetized limit switch I (12) and a magnetized limit switch II (13) are fixedly mounted on the hydraulic cylinder (8).

4. A high-temperature raw gas outlet pipeline cleaning device as claimed in claim 3, characterized in that: The tar residue scraper (7) is a cylindrical structure, a side wall of the tar residue scraper (7) is provided with a square hole (72), and a rib plate (71) is fixedly mounted on the inner wall of the tar residue scraper (7).

5. A high-temperature raw gas outlet pipeline cleaning device as claimed in claim 4, characterized in that: A raw gas pipeline (5) is fixedly connected to the side wall of the quenching pipe (4).

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