Primary cooler raw gas purification system

Abstract

The invention discloses a primary cooler raw gas purification system, and relates to the technical field of raw gas purification, the primary cooler raw gas purification system comprises a separation cavity, the top of the separation cavity is provided with an injection pipe, the inner wall of the separation cavity is provided with a mounting bracket, the top of the mounting bracket is rotatably connected with a turbine, the turbine is located at the bottom end of the injection pipe, and the bottom end of the turbine is provided with a connecting rod; a bearing ring is mounted on the surface of the connecting rod, and the surface of the bearing ring is mounted on the inner wall of the mounting bracket; according to the primary cooler raw gas purification system, through the arrangement of the separation cavity, the injection pipe, the mounting bracket, the turbine, the connecting rod, the bearing ring, the connecting rod and the scraping plate, impurity-containing return liquid from the primary cooler impacts the turbine to rotate at a high speed under the driving of potential energy, a strong centrifugal force field is generated to realize three-phase separation, and meanwhile, the rotating scraping plate continuously scrapes and sweeps the cavity wall to prevent scaling; therefore, the effects of efficiently, continuously and automatically separating and removing naphthalene and tar impurities in the return liquid and remarkably reducing the scaling rate and cleaning frequency of the primary cooler are achieved.

Description

Technical Field

[0001] This invention relates to the field of raw coal gas purification technology, specifically to a raw coal gas purification system with a primary cooler. Background Technology

[0002] In the coal chemical industry, the effective purification of raw coal gas is a key step in ensuring smooth production processes and product quality. As the core equipment for the initial cooling and purification of raw coal gas, the performance of the primary cooler has a decisive impact on the efficiency and operating cost of the overall coal gas purification system. Traditional primary cooler technology often adopts a combination of spray cooling and mechanical cleaning to try to remove impurities such as tar, naphthalene, and coal coke powder from raw coal gas. However, with the coal chemical industry's strict requirements for production efficiency, environmental protection, and operating cost control, existing primary cooler technology has gradually revealed problems of insufficient separation efficiency and frequent equipment maintenance when dealing with high-concentration, high-viscosity raw coal gas condensate.

[0003] However, existing primary cooler technology fails to fully utilize fluid potential energy to convert it into efficient mechanical separation power. This makes it difficult to achieve efficient and continuous three-phase (gas, liquid, and solid) separation when processing raw coal gas condensate containing high concentrations of naphthalene and tar. In particular, naphthalene and tar easily form viscous agglomerates at low temperatures. These substances rapidly deposit inside the primary cooler, causing severe scaling on the heat exchange tube walls and shell, which significantly increases system resistance and reduces heat exchange efficiency. Existing technologies often rely on periodic shutdown steam cleaning to restore equipment performance. This process not only consumes a lot of resources and increases operating costs, but also has adverse effects on the environment and equipment lifespan due to the release of harmful gases and accelerated equipment corrosion during cleaning. Therefore, improvements are needed. Summary of the Invention

[0004] The purpose of this invention is to provide a primary cooler raw coal gas purification system to solve the problems in the prior art where the fluid potential energy is not fully utilized to convert into efficient mechanical separation power, which makes it difficult to achieve efficient and continuous three-phase separation when processing raw coal gas condensate containing high concentrations of naphthalene and tar, resulting in severe scaling inside the primary cooler, increased system resistance, and decreased heat exchange efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a primary cooler raw coal gas purification system, including a separation chamber, an injection pipe installed on the top of the separation chamber, an installation bracket installed on the inner wall of the separation chamber, a turbine rotatably connected to the top of the installation bracket, and the turbine located at the bottom end of the injection pipe;

[0006] A connecting rod is installed at the bottom of the turbine. A bearing ring is installed on the surface of the connecting rod, and the surface of the bearing ring is installed on the inner wall of the mounting bracket. Multiple sets of connecting rods are installed on the surface of the connecting rod. A scraper is installed at one end of the connecting rod, and the surface of the scraper overlaps the inner wall of the separation chamber.

[0007] Furthermore, an extension cavity is installed on the surface of the separation cavity, a steam interface is installed on the top of the surface of the extension cavity, and a connecting groove is formed on the inner wall of the extension cavity, with the connecting groove and the steam interface being interconnected.

[0008] Furthermore, two drain pipes are installed at the bottom of the surface of the extension cavity, with the upper drain pipe having a size of DN40 and the lower drain pipe having a size of DN15. The drain pipes are inserted through the inner wall of the separation cavity.

[0009] Furthermore, a maintenance tube is installed on one side of the surface of the separation chamber, and a sealing cap is attached to one end of the maintenance tube.

[0010] Furthermore, the surface of the sealing cover is threaded with multiple sets of fixing bolts, and the surface of the fixing bolts is threaded to the surface of the inspection tube.

[0011] Furthermore, a discharge pipe is installed at the bottom of the separation chamber, and a protective frame is installed on the surface of the discharge pipe.

[0012] Furthermore, a drive mechanism is installed on the inner wall of the protective frame, a drive rod is installed at the output end of the drive mechanism, and a drive gear is installed on the surface of the drive rod.

[0013] Furthermore, the drive gear is surface-engaged with a transmission gear, and a movable rod is installed on the inner wall of the transmission gear.

[0014] Furthermore, a valve is installed at one end of the movable rod, and the surface of the valve is rotatably connected to the inner wall of the discharge pipe.

[0015] Compared with existing technologies, the primary cooler raw gas purification system provided by this invention, through the arrangement of a separation chamber, injection pipe, mounting bracket, turbine, connecting rod, bearing ring, connecting rod and scraper, causes the impurity-containing return liquid from the primary cooler to impact the turbine at high speed under the drive of potential energy, generating a strong centrifugal force field to achieve three-phase separation. At the same time, the rotating scraper continuously scrapes the chamber wall to prevent scaling, thereby achieving efficient, continuous and automatic separation and removal of naphthalene and tar impurities in the return liquid, significantly reducing the scaling rate and cleaning frequency of the primary cooler.

[0016] By incorporating an extension chamber, steam interface, connecting trough, and drain pipe, steam can be introduced into the separation chamber via the connecting trough for online thermal cleaning and unblocking. Drain pipes of different diameters enable the orderly and controllable discharge of light and heavy components, thereby achieving the effect of maintaining system smooth operation, preventing blockages, and ensuring continuous and stable operation of the separation process without shutting down the system.

[0017] By incorporating a maintenance pipe, sealing cover, discharge pipe, protective frame, drive mechanism, drive rod, drive gear, transmission gear, movable rod, and valves, personnel can safely access the equipment for maintenance through the maintenance pipe. Simultaneously, the gear transmission mechanism precisely controls the opening and closing of valves to regulate emissions, thereby improving equipment maintainability, achieving automated and precise control of the emission process, and enhancing system operational safety and process stability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the maintenance pipe structure provided in an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of a turbine structure provided in an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the scraper structure provided in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the valve structure provided in an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the drive mechanism structure provided in an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Separation chamber; 2. Injection pipe; 3. Mounting bracket; 4. Turbine; 5. Connecting rod; 6. Bearing ring; 7. Connecting rod; 8. Scraper; 9. Extension chamber; 10. Steam interface; 11. Connecting groove; 12. Drain pipe; 13. Inspection pipe; 14. Sealing cover; 15. Discharge pipe; 16. Protective frame; 17. Drive mechanism; 18. Drive rod; 19. Drive gear; 20. Transmission gear; 21. Movable rod; 22. Valve. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] As attached Figure 1 To be continued Figure 6 As shown:

[0029] Example 1:

[0030] The present invention provides a primary cooler raw coal gas purification system, including a separation chamber 1, an injection pipe 2 installed on the top of the separation chamber 1, an installation bracket 3 installed on the inner wall of the separation chamber 1, a turbine 4 rotatably connected to the top of the installation bracket 3, and the turbine 4 located at the bottom end of the injection pipe 2.

[0031] A connecting rod 5 is installed at the bottom of the turbine 4. A bearing ring 6 is installed on the surface of the connecting rod 5, and the surface of the bearing ring 6 is installed on the inner wall of the mounting bracket 3. Multiple sets of connecting rods 7 are installed on the surface of the connecting rod 5. A scraper 8 is installed at one end of the connecting rod 7, and the surface of the scraper 8 overlaps the inner wall of the separation chamber 1.

[0032] During operation, the mixed return liquid containing naphthalene, tar, and coal coke powder from the primary cooler spraying system is injected tangentially or axially into the separation chamber 1 through the injection pipe 2 at a certain pressure and flow rate. The mixed liquid flow first impacts the turbine 4 located below the injection pipe 2. Driven by the kinetic energy of the liquid, the turbine 4 begins to rotate at high speed, and its rotational kinetic energy is transmitted through the connecting rod 5 fixedly connected to it. The connecting rod 5 achieves stable support and low-friction rotation through the bearing ring 6 installed in the mounting bracket 3, ensuring the concentricity and stability of the entire rotating component at high speed. The rotation of the connecting rod 5 drives multiple sets of connecting rods 7 evenly arranged along its circumference to rotate synchronously, thereby driving the scraper 8 fixed to the end of each connecting rod 7 to move in a circular motion close to the inner wall of the separation chamber 1. Under the powerful centrifugal force generated by high-speed rotation, the mixed liquid entering separation chamber 1 undergoes rapid separation due to the density differences of its components: heavy naphthalene-containing tar agglomerates are thrown towards the inner wall of separation chamber 1 under centrifugal force and continuously accumulate during sedimentation; simultaneously, the continuously rotating scraper 8 constantly scrapes the inner wall of separation chamber 1 to prevent heavy materials from adhering and accumulating on the inner wall, and pushes them downwards, promoting their accumulation and discharge to the bottom. The less dense light tar and ammonia water are enriched in the middle and upper layers, respectively, achieving continuous three-phase separation. By converting the fluid potential energy into the mechanical energy of turbine 4 and using centrifugal force to enhance the separation process, while mechanical scraping prevents scaling on the wall, the key task of naphthalene removal and impurity separation in the raw coal gas purification system is completed efficiently and continuously.

[0033] Example 2:

[0034] This embodiment is basically the same as the previous embodiment, except that an extension cavity 9 is installed on the surface of the separation cavity 1, a steam interface 10 is installed on the top of the surface of the extension cavity 9, a connecting groove 11 is opened on the inner wall of the extension cavity 9, and the connecting groove 11 and the steam interface 10 are connected through each other. Two drain pipes 12 are installed on the bottom of the surface of the extension cavity 9, and the upper drain pipe 12 is DN40 and the lower drain pipe 12 is DN15. The drain pipes 12 are inserted through the inner wall of the separation cavity 1.

[0035] In use, the extension cavity 9 serves as a functional extension structure of the side wall of the separation cavity 1. The connecting groove 11 inside it forms a through flow channel from the steam interface 10 to the inner wall of the separation cavity 1. After the system has been running for a period of time, if heavy components may adhere to the lower part of the inner wall of the separation cavity 1 or have poor flow in the inlet area of ​​the drain pipe 12, external low-pressure steam can be connected through the steam interface 10. The steam is evenly introduced into the separation cavity 1 through the connecting groove 11. On the one hand, the heat energy reduces the viscosity of the viscous mixture of heavy tar and naphthalene and enhances its fluidity. On the other hand, the scouring effect of the steam can physically loosen and remove the accumulated deposits, preventing blockage of the drain channel. Two drain pipes 12 with different diameters perform differentiated draining tasks: the upper DN40 drain pipe 12 is mainly used to drain the separated mid-layer light tar, and its larger diameter can accommodate the smooth discharge of tar with a certain viscosity; the lower DN15 drain pipe 12 is used to continuously or intermittently drain the heavy naphthalene-containing agglomerates and tar residue that have accumulated at the bottom, and its smaller diameter helps to control the discharge flow rate and avoid the entrainment of light components. The structural design of the extension chamber 9 integrates steam cleaning and multi-stage draining functions, achieving online maintenance and stable discharge of the system without affecting the integrity of the main structure of the separation chamber 1, and ensuring the continuous and efficient operation of the naphthalene removal and purification process.

[0036] Example 3:

[0037] This embodiment is basically the same as the previous embodiment, except that a maintenance tube 13 is installed on one side of the surface of the separation chamber 1, and a sealing cap 14 is attached to one end of the maintenance tube 13. Multiple sets of fixing bolts are threadedly connected to the surface of the sealing cap 14, and the surface of the fixing bolts is threadedly connected to the surface of the maintenance tube 13. A discharge tube 15 is installed at the bottom of the separation chamber 1, and a protective frame 16 is installed on the surface of the discharge tube 15. A drive mechanism 17 is installed on the inner wall of the protective frame 16. A drive rod 18 is installed at the output end of the drive mechanism 17. A drive gear 19 is installed on the surface of the drive rod 18. A transmission gear 20 is meshed on the surface of the drive gear 19. A movable rod 21 is installed on the inner wall of the transmission gear 20. A valve 22 is installed at one end of the movable rod 21, and the surface of the valve 22 is rotatably connected to the inner wall of the discharge tube 15.

[0038] In use, the inspection pipe 13 serves as a passage for personnel to enter the separation chamber 1 for inspection, cleaning, or maintenance. Its end is detachably sealed to the sealing cap 14 via multiple sets of fixing bolts, ensuring the airtightness of the device during normal operation and easy opening during maintenance. The discharge pipe 15, located at the bottom of the separation chamber 1, is responsible for the final discharge of the heavy component mixture. Its external protective frame 16 provides a robust impact-resistant and sealed environment for the drive control components. The drive mechanism 17 (which can be a servo motor) installed inside the protective frame 16 serves as the power source. Its output shaft drives the connected drive rod 18 to rotate, causing the drive gear 19 fixed on the drive rod 18 to rotate accordingly, and through gear meshing, driving the transmission gear 20 to rotate. The transmission gear 20 drives the movable rod 21 fixed in its inner hole to rotate, thus allowing the valve 22 connected to the end of the movable rod 21 to open, close, or adjust its opening degree within the discharge pipe 15. This gear transmission mechanism smoothly and reliably converts the rotational motion of the drive mechanism 17 into the opening and closing action of the valve 22. It enables both remote automatic control and manual operation when necessary, thereby precisely controlling the discharge rate and timing of heavy materials at the bottom, ensuring a continuous and stable separation process, and preventing the accidental discharge of light components. Overall, this structure integrates convenient maintenance access and automated discharge control functions, significantly improving the level of automation and process control precision while ensuring system sealing safety.

[0039] Application example:

[0040] Large coking plants have long faced the challenge of short operating cycles and frequent maintenance of horizontal tube primary coolers in their raw coal gas purification processes within their chemical production workshops. During the cooling process, impurities such as tar, naphthalene, and coal dust condense inside the primary cooler, continuously depositing and scaling on the heat exchange tube walls and shell. This leads to a sustained increase in system resistance and a significant decrease in heat exchange efficiency. This forces the primary cooler to be replaced and steam-blown cleaned weekly, resulting in substantial waste of water, electricity, and steam, increased labor intensity for operators, and environmental pollution from the harmful gases released during steam blowing. Furthermore, the oxygen absorbed by the equipment during cooling reacts with residual sulfides, further exacerbating corrosion. Although the company previously added an air-jet tower before the primary cooler to reduce the coal dust content in the gas, this system resulted in increased overall resistance and higher operating costs, failing to fundamentally solve the problems of naphthalene buildup and efficiency decline. To this end, the company decided to introduce its primary cooler raw gas purification system into the existing primary cooler spray liquid return pipeline to achieve online, continuous, and efficient separation of naphthalene, tar, and solid impurities in the return liquid, thereby extending the continuous operation cycle of the primary cooler, reducing system resistance, reducing maintenance frequency, and improving overall purification efficiency.

[0041] During the modification, the separation chamber 1 of this purification system is connected to the return liquid pipe of the primary cooler spray system via the injection pipe 2 at its top. Utilizing the fluid potential energy formed by the original height difference in the return liquid pipe, a mixed condensate rich in naphthalene, light tar, coal coke powder, and ammonia is continuously injected into the separation chamber 1 at a certain flow rate. The mixed liquid flow first impacts and drives the turbine 4 located below the injection pipe 2 to rotate at high speed. The turbine 4 transmits the rotational motion through the connecting rod 5 at its bottom end. The connecting rod 5 is stably supported by the bearing ring 6 installed in the mounting bracket 3, ensuring smooth rotation. The connecting rod 5 drives multiple sets of connecting rods 7 evenly distributed circumferentially on its surface to rotate synchronously, thereby causing the scraper 8 fixed to the end of each connecting rod 7 to closely adhere to the inner wall of the separation chamber 1 for circumferential scraping. Under the strong centrifugal force field generated by the high-speed rotation of turbine 4, the heavy naphthalene-containing tar agglomerates in the mixture are quickly thrown towards the inner wall of separation chamber 1. The naphthalene-containing unsaturated light tar in the middle layer and the fine coal coke powder ammonia water in the upper layer are separated into layers according to the density difference. At the same time, the continuously rotating scraper 8 continuously scrapes off the heavy deposits attached to the inner wall and guides them downward, effectively preventing scaling on the wall surface.

[0042] During the separation process, the middle layer of light tar is discharged through the DN40 drain pipe 12 installed on the surface of the extension chamber 9 and returned to the circulating oil tank, while the upper layer of ammonia water is sent back to the spraying system for recycling through the system's matching return pipe. The heavy naphthalene-containing agglomerates accumulated at the bottom of the separation chamber 1 are discharged intermittently in a controlled manner through another DN15 drain pipe 12. When the discharge flow rate slows down or the separation efficiency decreases after a period of operation, the operator can introduce low-pressure steam through the steam interface 10 set at the top of the extension chamber 9. The steam is evenly introduced into the lower part of the separation chamber 1 through the connecting groove 11 opened in the inner wall of the extension chamber 9, and performs thermal melting and impact cleaning on the heavy deposits that may adhere to the inlet of the drain pipe 12 and the lower part of the chamber wall, restoring the passage to unobstructed flow and achieving online maintenance without stopping the machine.

[0043] The thick, heavy mixture that finally collects at the bottom of separation chamber 1 is centrally discharged through discharge pipe 15. The discharge process is precisely controlled by an automated system: after the drive mechanism 17 (such as a servo motor) installed inside the protective frame 16 is started, it drives the drive rod 18 and its drive gear 19 to rotate. The drive gear 19 meshes with the transmission gear 20, which drives the movable rod 21 fixed to it to rotate, thereby adjusting the opening of the valve 22 at the end of the movable rod 21 in the discharge pipe 15, realizing precise control of the discharge flow rate and time, ensuring that the heavy material is continuously and stably discharged without carrying light components. In addition, the inspection pipe 13 set on the side of separation chamber 1 and its end sealed with a sealing cap 14 fastened by multiple sets of fixing bolts provide a safe and convenient manhole passage for regular inspection, cleaning or maintenance of the equipment, greatly facilitating maintenance operations while ensuring the airtightness of the system.

[0044] Through the continuous operation of this system, the naphthalene and scaling phenomena inside the primary cooler of the enterprise have been fundamentally suppressed. The primary cooler replacement cycle has been extended from once a week to more than once a month. The system operating resistance has been significantly reduced, the gas cooling effect has been steadily improved, the frequency of steam cleaning and energy consumption have been greatly reduced, the labor intensity of operators has been effectively reduced, and the environmental emissions have been improved due to the reduction of steam blowing and venting. The corrosion rate of equipment has also been slowed down. Overall, the system has achieved safe, low-consumption, high-efficiency and environmentally friendly long-term stable operation.

[0045] Working Principle: The mixed condensate containing naphthalene, tar, and coal coke powder from the primary cooler spraying system, utilizing the fluid potential energy created by the height difference in the pipes, is injected tangentially or axially into the cylindrical separation chamber 1 through the injection pipe 2 at a certain flow rate and pressure. The liquid flow first impacts and drives the turbine 4 located directly below the injection pipe 2 to rotate at high speed. The turbine 4 transmits its rotational kinetic energy downward through the connecting rod 5 rigidly connected to its bottom end. The connecting rod 5 obtains radial and axial stable support with the help of the bearing ring 6 precisely installed inside the mounting bracket 3, ensuring coaxiality and low-friction operation during high-speed rotation. The rotation of the connecting rod 5 drives a set of connecting rods 7 uniformly welded and fixed to its surface circumferentially to rotate synchronously, thereby driving the connecting rods 7 to rotate synchronously. The wear-resistant scraper 8 at the end continuously performs a circular scraping motion against the inner wall surface of the separation chamber 1. Under the strong centrifugal force field generated by the high-speed rotation of the turbine 4, the mixed liquid entering the separation chamber 1 is rapidly separated according to the density differences of its components: the densest heavy naphthalene-containing tar agglomerates are thrown towards the inner wall area of ​​the separation chamber 1 under the strong centrifugal force and continuously accumulate during the downward settling process; the moderately dense unsaturated naphthalene-containing light tar forms a ring-shaped aggregation area in the middle layer; the least dense fine coal coke powder and ammonia water are concentrated in the upper area of ​​the rotation center, thus achieving continuous three-phase separation; at the same time, the scraper 8 rotating closely against the wall continuously scrapes off the heavy deposits attached to the inner wall of the separation chamber 1 and guides them downward. Effectively prevents naphthalene and tar from adhering and scaling on the inner wall, promoting the accumulation of heavy materials at the bottom; the separated middle layer light tar is discharged through the DN40 drain pipe 12 installed on the surface of the extension chamber 9 and returned to the circulating oil tank, the upper layer ammonia water is sent back to the spraying system for recycling through the system return pipe, and the heavy mixture accumulated at the bottom is discharged intermittently in a controlled manner through another DN15 drain pipe 12; when it is necessary to remove deposits or restore drainage during operation, low-pressure steam can be introduced through the steam interface 10 at the top of the extension chamber 9, and the steam is evenly introduced into the lower part of the separation chamber 1 through the connecting groove 11 opened in the inner wall of the extension chamber 9 to perform thermal melting and fluid flushing of the heavy deposits, realizing online cleaning; the final viscous material collected at the bottom of the separation chamber 1 The heavy mixture is discharged centrally through the discharge pipe 15. The discharge process is precisely controlled by an automated system: the drive mechanism 17 installed inside the protective frame 16 outputs torque to drive the drive rod 18 and the drive gear 19 installed on it to rotate. The drive gear 19 drives the transmission gear 20 to rotate through meshing transmission. The transmission gear 20 drives the movable rod 21 fixedly connected to its inner hole to rotate, thereby adjusting the opening of the valve 22 installed at the end of the movable rod 21 in the flow channel of the discharge pipe 15, so as to achieve precise adjustment of the discharge flow rate and time. In addition, the inspection pipe 13 located on the side of the separation chamber 1 and its sealing cover 14 fastened by multiple sets of fixing bolts provide a safe and sealed inspection channel for the regular inspection, maintenance and cleaning of the equipment.The entire system converts fluid potential energy into the mechanical energy of turbine 4 rotation, utilizes centrifugal force to enhance separation, and combines mechanical scraping to prevent scaling, online steam cleaning, and automated emission control to achieve efficient, continuous, and stable separation of naphthalene, tar, and impurities in the primary cooler return liquid. This effectively solves the problem of naphthalene blockage in the primary cooler, extends the equipment operating cycle, and reduces system resistance and maintenance costs.

[0046] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A primary cooler raw coal gas purification system, comprising a separation chamber (1), characterized in that, An injection pipe (2) is installed on the top of the separation chamber (1), and an installation bracket (3) is installed on the inner wall of the separation chamber (1). A turbine (4) is rotatably connected to the top of the installation bracket (3), and the turbine (4) is located at the bottom end of the injection pipe (2). A connecting rod (5) is installed at the bottom of the turbine (4). A bearing ring (6) is installed on the surface of the connecting rod (5), and the surface of the bearing ring (6) is installed on the inner wall of the mounting bracket (3). Multiple sets of connecting rods (7) are installed on the surface of the connecting rod (5). A scraper (8) is installed at one end of the connecting rod (7), and the surface of the scraper (8) overlaps the inner wall of the separation chamber (1).

2. The primary cooler raw gas purification system according to claim 1, characterized in that, An extension cavity (9) is installed on the surface of the separation cavity (1), and a steam interface (10) is installed on the top of the surface of the extension cavity (9). A connecting groove (11) is opened on the inner wall of the extension cavity (9), and the connecting groove (11) and the steam interface (10) are connected to each other through each other.

3. The primary cooler raw gas purification system according to claim 2, characterized in that, Two drain pipes (12) are installed on the bottom surface of the extension cavity (9), with the upper drain pipe (12) having a size of DN40 and the lower drain pipe (12) having a size of DN15. The drain pipes (12) are inserted through the inner wall of the separation cavity (1).

4. The primary cooler raw gas purification system according to claim 1, characterized in that, A maintenance tube (13) is installed on one side of the surface of the separation chamber (1), and a sealing cap (14) is attached to one end of the maintenance tube (13).

5. The primary cooler raw gas purification system according to claim 4, characterized in that, The sealing cap (14) has multiple sets of fixing bolts threaded on its surface, and the fixing bolts are threaded on the surface of the inspection tube (13).

6. The primary cooler raw gas purification system according to claim 1, characterized in that, The bottom of the separation chamber (1) is equipped with a discharge pipe (15), and a protective frame (16) is installed on the surface of the discharge pipe (15).

7. The primary cooler raw gas purification system according to claim 6, characterized in that, The inner wall of the protective frame (16) is equipped with a drive mechanism (17), the output end of the drive mechanism (17) is equipped with a drive rod (18), and the surface of the drive rod (18) is equipped with a drive gear (19).

8. The primary cooler raw gas purification system according to claim 7, characterized in that, The drive gear (19) is meshed with a transmission gear (20), and a movable rod (21) is installed on the inner wall of the transmission gear (20).

9. The primary cooler raw coal gas purification system according to claim 8, characterized in that, A valve (22) is installed at one end of the movable rod (21), and the surface of the valve (22) is rotatably connected to the inner wall of the discharge pipe (15).

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