System for preventing thick matter filter from being blocked during tar residue separation

Abstract

The utility model relates to a system for preventing a thick matter filter from being blocked during tar residue separation, which comprises a thick matter filter arranged between a tar residue pre-separator and a tar squeezing pump, and further comprises an inlet flushing pipeline, an outlet flushing pipeline, a bottom back flushing pipeline, a first pressure sensor, a second pressure sensor and a control system, a hot ammonia water outlet of the inlet flushing pipeline is connected with an inlet tar pipeline, a hot ammonia water outlet of the outlet flushing pipeline is connected with an outlet tar pipeline, a first pressure sensor is arranged on the inlet tar pipeline, and a second pressure sensor is arranged on the outlet tar pipeline; and a hot ammonia water outlet of the bottom backwashing pipeline is connected with an emptying pipeline. According to the utility model, various measures are adopted to effectively prevent the thick material filter from being blocked, and the device has the advantages of simplicity in operation, high automation degree, strong working reliability and the like, and has wide application prospects and market requirements.

Description

TECHNICAL FIELD

[0001] The utility model relates to the coking technical field especially relates to a system for preventing the filter of thick material from being blocked when separating tar residue from tar ammonia water mixture in the process of tar condensation and cooling. BACKGROUND

[0002] In the production process of coke oven, a large amount of high-temperature raw coal gas is generated. Under the cooling effect of circulating ammonia water in the gas collecting pipe, some high-boiling organic compounds are condensed to form tar semi-solid. At the same time, the coal powder and semi-coke mixed in the raw coal gas are also mixed in the tar to form a tar ammonia water mixture. This tar ammonia water mixture enters the gas-liquid separator together with the raw coal gas for gas-liquid separation. The separated tar ammonia water mixture enters the tar residue pre-separator, where the tar residue is separated from the tar ammonia water mixture by gravity. A grate screen is usually arranged at the outlet of the tar residue pre-separator to intercept solid materials larger than 8 mm in the tar residue pre-separator and make them settle at the bottom of the tar residue pre-separator to be pumped out by a tar press pump. The tar press pump crushes the solid materials and sends them back to the upper part of the tar residue pre-separator. When the tar residue pre-separator or the tar press pump is under maintenance, the tar in the pre-separator or the tar press pump can be discharged into a venting tank through a thick material filter. The thick material filter is used to prevent the tar residue larger than 8 mm from entering the venting tank and causing equipment blockage.

[0003] A Chinese utility model patent with the application number 201020133530.0 discloses a tar thick material filter. The filter is connected between the tar residue pre-separator and the tar press pump and includes a body, an inlet and an outlet, and a venting port. A filter screen is arranged in the body and is horizontally arranged on the same horizontal plane as the inlet and outlet of the body. The filter screen is fixed to the inner wall of the body by welding. The working principle of the filter is as follows: the tar residue discharged from the tar residue pre-separator enters the body of the thick material filter through the inlet. The tar residue smaller than 8 mm settles at the bottom of the body and is discharged into the venting tank through the venting pipe. The tar residue larger than 8 mm is blocked by the filter screen and is continuously conveyed to the tar press pump through the outlet driven by the tar press pump, so that it does not deposit in the filter and cause blockage. Finally, the tar residue is crushed in the tar press pump and is sent back to the tar residue pre-separator for recycling.

[0004] There are some problems in the above tar residue separation method: first, the current thick material filter and tar press pump flushing operation is mainly realized by manual control valve, which not only increases the labor intensity of the operator, but also increases the operating cost of the enterprise; second, if the thick material filter is blocked and cannot be found and cleaned in time, it is easy to cause the thick material filter to be damaged, affecting the normal operation of production; finally, in winter, due to low temperature, tar is easy to solidify, which is more likely to cause the thick material filter to be blocked, and manual cleaning is required frequently, which affects the production efficiency. In summary, there are problems such as complex operation, strong dependence on manual operation, high maintenance cost and the like in the current tar residue filtering and separation process.

[0005] The Chinese utility model patent with the application number 202120311832.0 discloses a "tar residue pre-separator treatment system", which comprises a tar residue pre-separator, a coarse crusher, a secondary crushing device, a precision grinder, a tar residue centrifuge and a residue box. It solves the problem that the existing process uses an oil residue press pump for pressing, but the oil residue press pump cannot crush large tar residues, which is easy to cause pump blockage and requires manual cleaning during production stoppage; it can crush and precision grind large oil residues, and can completely separate tar residues in tar. Its working process is as follows: the large (1-2 cm in diameter to more than 10 cm) tar residues discharged from the lower residue discharge hole of the tar residue pre-separator are crushed to below 3 cm by the coarse crusher, enter the secondary crushing device for secondary crushing, are crushed to below 1 cm, and are heated to a temperature of 70-75 degrees Celsius, then enter the precision grinder for precision grinding to particles below 2 mm, then enter the tar residue centrifuge for solid-liquid separation, and the dry residue falls into the lower residue box. The separated tar ammonia water is sent to the tar residue pre-separator by a delivery pump; by crushing and precision grinding large oil residues, tar residues in tar can be completely separated; but it needs to be equipped with various devices such as a coarse crusher, a secondary crushing device, a precision grinder and a tar residue centrifuge, which not only occupies a large area, but also increases equipment investment. SUMMARY

[0006] The utility model discloses a system for preventing the thick material filter from being blocked during tar residue separation, which effectively prevents the thick material filter from being blocked by adopting various measures, has the advantages of simple operation, high automation degree, strong working reliability and the like, and has wide application prospect and market demand.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0008] The system for preventing the clogging of the thick matter filter during the tar residue separation comprises a thick matter filter arranged between a tar residue pre-separator and a tar press pump, the thick matter filter is connected with the tar outlet at the bottom of the tar residue pre-separator through an inlet tar pipeline, connected with the tar inlet of the tar press pump through an outlet tar pipeline, and the outlet of the tar press pump is connected with the return tar inlet at the top of the tar residue pre-separator through a return tar pipeline; the solid outlet at the bottom of the thick matter filter is connected with a venting groove through a venting pipeline; the system further comprises an inlet flushing pipeline, an outlet flushing pipeline, a bottom backwashing pipeline, a first pressure sensor, a second pressure sensor and a control system; the hot ammonia water outlet of the inlet flushing pipeline is connected with the inlet tar pipeline, and the first control valve is arranged on the inlet flushing pipeline; the hot ammonia water outlet of the outlet flushing pipeline is connected with the outlet tar pipeline, and the second control valve is arranged on the outlet flushing pipeline; the first pressure sensor is arranged on the inlet tar pipeline downstream of the inlet flushing pipeline, and the second pressure sensor is arranged on the outlet tar pipeline upstream of the outlet tar pipeline; the signal output ends of the first pressure sensor and the second pressure sensor are connected with the signal input end of the control system, and the signal output end of the control system is connected with the control ends of the first control valve and the second control valve; the hot ammonia water outlet of the bottom backwashing pipeline is connected with the venting pipeline, the third control valve is arranged on the bottom backwashing pipeline, the fourth control valve is arranged on the venting pipeline upstream of the bottom backwashing pipeline, and the fifth control valve is arranged on the venting pipeline downstream of the bottom backwashing pipeline; the third control valve, the fourth control valve and the fifth control valve are interlocked controlled by the control system.

[0009] A steam inlet is arranged on the inlet tar pipeline upstream of the inlet tar pipeline, and the steam inlet is connected with a steam source through a steam pipeline.

[0010] The thick matter filter is composed of a filter body, a top cover plate, an inner partition plate and a filter screen; the filter body comprises a straight section cylinder at the upper part and a tapered section cylinder at the lower part; a tar inlet is arranged on one side of the upper part of the filter body, and a tar outlet is arranged on the other side of the upper part opposite to the tar inlet; the inner partition plate is arranged in the straight section cylinder between the tar inlet and the tar outlet; the top of the filter body is detachably connected with the top cover plate, and the top of the inner partition plate is fixedly connected with the top cover plate; the filter screen is arranged in the filter body below the inner partition plate; the inner partition plate has an initial working position and a normal working position, the inner partition plate is parallel to the connecting line direction of the tar inlet and the tar outlet when the inner partition plate is in the initial working position, and the inner partition plate is perpendicular to the connecting line direction of the tar inlet and the tar outlet when the inner partition plate is in the normal working position.

[0011] A system for preventing the clogging of a tar residue separation thick material filter, further comprising a stirring device; the stirring device is composed of a support, a stirring motor, a stirring paddle and a disturbing mechanism; the thick material filter is composed of a filter body, a top cover plate and a filter screen; the filter body comprises a straight section cylinder at the top and a tapered section cylinder at the bottom; a tar inlet is arranged on one side of the top of the filter body, and a tar outlet is arranged on the other side of the top opposite to the tar inlet; the top of the filter body is detachably connected with the top cover plate, and the filter screen is arranged at the bottom of the filter body; the support is arranged on the top cover plate, the stirring motor is installed on the support, the stirring paddle is composed of a stirring shaft and stirring blades, the upper end of the stirring shaft is connected with the motor shaft of the stirring motor, and a plurality of stirring blades are arranged at the lower end of the stirring shaft; the disturbing mechanism is arranged in at least two groups, each group of the disturbing mechanism comprises a disturbing shaft, a disturbing blade and a connecting rod; the upper end of the disturbing shaft is hingedly connected with the upper portion of the stirring shaft, and the disturbing blade is arranged at the lower end of the disturbing shaft; a wave-shaped groove is arranged on the inner wall of the top of the filter body in the circumferential direction, one end of the connecting rod is connected with the disturbing shaft, and the other end of the connecting rod is clamped in the groove; when the stirring shaft rotates under the driving of the stirring motor, the disturbing shaft rotates and drives the disturbing blade to disturb up and down in a wave flow shape along the circumferential direction of the thick material filter under the action of the connecting rod.

[0012] Compared with the prior art, the system has the following beneficial effects:

[0013] 1) The automatic flushing function of the thick material filter is increased, the thick material filter is regularly cleaned by the control system, and the viscous tar and tar residue are prevented from being blocked in the thick material filter;

[0014] 2) The pressure measuring points are respectively arranged on the tar inlet and outlet pipelines of the thick material filter, if the pressure difference reaches the highest limit value (such as 0.06 MPa), the control system immediately starts the hot ammonia water flushing, and when the pressure difference returns to the lowest limit value (such as 0.02 MPa), the control system automatically stops the hot ammonia water flushing;

[0015] 3) The timing backwashing function of the bottom of the thick material filter is additionally arranged, the inside of the thick material filter is regularly cleaned, and the viscous tar is prevented from blocking the thick material filter;

[0016] 4) The steam heating function is arranged on the tar inlet pipeline of the thick material filter, the flowability of the tar and tar residue is improved, and the tar is prevented from solidifying due to low temperature in winter to cause the clogging of the thick material filter;

[0017] 5) The setting direction of the inner partition plate of the thick material filter is consistent with the fluid direction at the initial stage of operation, after the thick material filter normally and stably operates, the inner partition plate is horizontally rotated by 90°, so that the inner partition plate is perpendicular to the fluid direction, a part of the tar residue with large particles is blocked, and the subsequent pipelines and tar expression pumps are prevented from being blocked.

[0018] 6) The inner partition plate of the thick material filter can be used only at the initial stage of operation, and the inner partition plate is removed after normal and stable operation, and a stirring device is added in the thick material filter to avoid that the large tar residue is deposited at the bottom of the thick material filter and blocks the thick material filter.

[0019] 7) The tar residue can be effectively prevented from blocking the pipeline, the stability of the process system operation is improved, and the economic loss caused by the production reduction or shutdown due to the tar residue blockage is reduced.

[0020] 8) The system adopts a closed cycle, has no leakage and no gas emission, the environmental protection level is improved, and the environmental protection requirement is met.

[0021] 9) Automatic control is realized through the interlocking of the control system, the pressure sensor and the valve, the automation degree is improved, the labor cost is reduced, and the production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a system schematic diagram for preventing the thick material filter from being blocked during tar residue separation.

[0023] Figure 2 is a state schematic diagram of an inner partition plate in the thick material filter Figure 1 (the inner partition plate is at an initial working position).

[0024] Figure 3 is a state schematic diagram of an inner partition plate in the thick material filter Figure 2 (the inner partition plate is at a normal working position).

[0025] Figure 4 is a three-dimensional structure schematic diagram of the stirring device.

[0026] In the figure: 1. tar residue pre-separator 2. thick material filter 2-1. tar inlet 2-2. tar outlet 3. tar press pump 4. steam pipeline 5. inlet tar pipeline 6. inlet flushing pipeline 7. outlet tar pipeline 8. outlet flushing pipeline 9. return tar pipeline 10. vent pipeline 11. bottom backflushing pipeline 12. first pressure sensor 13. second pressure sensor 14. inner partition plate 15. stirring device 15-1. support 15-2. stirring motor 15-3. stirring shaft 15-4. stirring paddle 15-5. disturbance shaft 15-6. disturbance blade 15-7. connecting rod 15-8. groove DETAILED DESCRIPTION

[0027] The specific implementation manner of the utility model is further explained as follows by combining with the drawings:

[0028] For example, Figure 1As shown in the utility model discloses a prevent tar residue separation when thick material filter block -up's system, including being located between tar residue pre -separating ware 1 and tar press pump 3's thick material filter 2, and thick material filter 2 is connected the tar outlet of tar residue pre -separating ware 1 bottom through import tar pipeline 5, is connected the tar inlet of tar press pump 3 through export tar pipeline 7, and the outlet of tar press pump 3 is connected the back -feed tar inlet of tar residue pre -separating ware 1 top through back -feed tar pipeline 9, and thick material filter 2 bottom solid material outlet is connected emptying groove through emptying pipeline 10, the prevent tar residue separation when thick material filter block -up's system still includes import flushing pipeline 6, export flushing pipeline 8, bottom backflushing pipeline 11, first pressure sensor 12, second pressure sensor 13 and control system, and the hot ammonia water outlet of import flushing pipeline 6 is connected with import tar pipeline 5, is equipped with first control valve on import flushing pipeline 6, and the hot ammonia water outlet of export flushing pipeline 8 is connected with export tar pipeline 7, is equipped with second control valve on export flushing pipeline 8, and is equipped with first pressure sensor 12 on import tar pipeline 5 of import flushing pipeline 6 downstream, and is equipped with second pressure sensor 13 on export tar pipeline 7 of export flushing pipeline 8 upstream, and the signal output end of first pressure sensor 12 and second pressure sensor 13 is connected the signal input end of control system, and the signal output end of control system is connected the control end of first control valve and second control valve, and the hot ammonia water outlet of bottom backflushing pipeline 11 is connected with emptying pipeline 10, is equipped with third control valve on bottom backflushing pipeline 11, is equipped with fourth control valve on emptying pipeline 10 of bottom backflushing pipeline 11 upstream, and is equipped with fifth control valve on emptying pipeline 10 of bottom backflushing pipeline 11 downstream, and third control valve, fourth control valve and fifth control valve are interlocked control through control system.

[0029] The import flushing pipeline 6 upstream import tar pipeline 5 is equipped with steam inlet, and is connected with steam source through steam pipeline 4.

[0030] The thick material filter 2 is composed of a filter body, a top cover plate, an inner partition plate 14 and a filter screen. The filter body includes a straight section cylinder at the top and a tapered section cylinder at the bottom. A tar inlet 2-1 is arranged on one side of the top of the filter body, and a tar outlet 2-2 is arranged on the other side of the top opposite to the tar inlet 2-1. The inner partition plate 14 is arranged in the straight section cylinder between the tar inlet 2-1 and the tar outlet 2-2. The top of the filter body is detachably connected with the top cover plate, and the top of the inner partition plate 14 is fixedly connected with the top cover plate. The filter screen is arranged in the filter body below the inner partition plate 14. The inner partition plate 14 has an initial working position and a normal working position. When the inner partition plate 14 is in the initial working position, it is parallel to the connecting line direction of the tar inlet 2-1 and the tar outlet 2-2 (as shown in FIG. 2A). When the inner partition plate 14 is in the normal working position, it is perpendicular to the connecting line direction of the tar inlet 2-1 and the tar outlet 2-2 (as shown in FIG. 2B). Figure 2 Figure 3 The inner partition plate 14 has an initial working position and a normal working position. When the inner partition plate 14 is in the initial working position, it is parallel to the connecting line direction of the tar inlet 2-1 and the tar outlet 2-2 (as shown in FIG. 2A). When the inner partition plate 14 is in the normal working position, it is perpendicular to the connecting line direction of the tar inlet 2-1 and the tar outlet 2-2 (as shown in FIG. 2B). ​

[0031] The system for preventing clogging of a thick filter during tar residue separation according to this utility model also includes a tamping device 15; as shown in the figure. Figure 4 As shown, the tamping device 15 consists of a support 15-1, a tamping motor 15-2, a stirring paddle, and a disturbance mechanism; the thick filter 2 consists of a filter body, a top cover plate, and a filter screen; the filter body includes an upper straight section cylinder and a lower conical section cylinder; a tar inlet 2-1 is provided on one side of the upper part of the filter body, and a tar outlet 2-2 is provided on the other side of the upper part opposite to the tar inlet 2-1; the top of the filter body is detachably connected to the top cover plate, and a filter screen is provided at the bottom of the filter body; the support 15-1 is mounted on the top cover plate, the tamping motor 15-2 is mounted on the support 15-2, and the stirring paddle consists of a stirring shaft 15-3 and stirring blades 15-4. The upper end of the stirring shaft 15-3 is connected to the motor shaft of the tamping motor 15-2. The lower end of 15-3 is provided with several stirring blades 15-4; at least two sets of disturbance mechanisms are provided, each set of disturbance mechanisms includes a disturbance shaft 15-5, a disturbance blade 15-6 and a connecting rod 15-7; the upper end of the disturbance shaft 15-5 is hinged to the upper part of the stirring shaft 15-3, and the lower end of the disturbance shaft 15-5 is provided with a disturbance blade 15-6; the upper inner wall of the filter body is provided with a wavy groove 15-8 along the circumference, one end of the connecting rod 15-7 is connected to the disturbance shaft 15-5, and the other end of the connecting rod 15-7 is stuck in the groove 15-8; when the stirring shaft 15-3 rotates under the drive of the tumbling motor 15-2, the disturbance shaft 15-5 rotates accordingly, and under the action of the connecting rod 15-7, it drives the disturbance blade 15-6 to move up and down in a wave-like pattern along the circumference of the thick filter 2.

[0032] The working process of the system for preventing clogging of the thick material filter during tar residue separation described in this utility model is as follows:

[0033] 1) Coke oven raw gas is cooled by circulating ammonia water in the gas collecting pipe to form a tar ammonia water mixture containing tar, tar semi-solid, coal powder, and semi-coke. The tar ammonia water mixture and coke oven raw gas enter the gas-liquid separator for gas-liquid separation. The separated tar ammonia water mixture enters the tar residue pre-separator 1, where solids larger than 8mm are trapped. The solids settle to the bottom of the tar residue pre-separator 1 and enter the thick material filter 2 through the inlet tar pipe 5.

[0034] 2) The first pressure sensor 12 is arranged on the import tar pipeline 5, and the second pressure sensor 13 is arranged on the export tar pipeline 7. The difference between the measured values of the first pressure sensor 12 and the second pressure sensor 13, i.e. the pressure difference between the import tar pipeline 5 and the export tar pipeline 7, is calculated by the control system. When the pressure difference reaches 0.06 MPa, the first control valve on the import flushing pipeline 6 and the second control valve on the export flushing pipeline 8 are opened, and the import tar pipeline 5 and the export tar pipeline 7 are flushed with hot ammonia water. When the pressure difference drops to 0.02 MPa, the first control valve and the second control valve are automatically closed, and the flushing is stopped.

[0035] 3) The bottom backwashing pipeline 11 is used to clean the inside of the thick substance filter 2 with hot ammonia water at a fixed time every day, so as to avoid the clogging of the thick substance filter 2 by the viscous tar. The temperature of the hot ammonia water is controlled at 70-80℃, and the pressure is 0.4-0.6 MPa. The backwashing time is not less than 10 min.

[0036] 4) The tar and tar residue discharged from the tar outlet 2-2 of the thick substance filter 2 enter the tar press pump 3 through the export tar pipeline 7. The tar press pump 3 is used to crush the tar residue, and then the tar containing the crushed tar residue is sent back to the tar residue pre-separator 1.

[0037] As a preferred solution, the inner partition plate 14 is arranged in the thick substance filter 2. The inner partition plate 14 is arranged in the initial working position, i.e. parallel to the direction of the connecting line between the tar inlet 2-1 and the tar outlet 2-2, at the initial stage of the system operation. After the system runs stably, the inner partition plate 14 is removed, and then is rotated horizontally by 90° and is put back into the thick substance filter 2. At this time, the inner partition plate 14 is arranged in the normal working position, i.e. perpendicular to the direction of the connecting line between the tar inlet 2-1 and the tar outlet 2-2, and is used to block a part of the large-particle tar residue, so as to avoid the clogging of the subsequent pipeline and the tar press pump 3.

[0038] As another preferred solution, the inner partition plate 14 is arranged in the thick substance filter 2 at the initial stage of the system operation, and the inner partition plate 14 is arranged in the initial working position, i.e. parallel to the direction of the connecting line between the tar inlet 2-1 and the tar outlet 2-2. After the system runs stably, the inner partition plate 14 is removed, and the stirring device 15 is installed into the thick substance filter 2 and is started, so as to avoid the deposition of the large tar residue at the bottom of the thick substance filter.

[0039] When the environmental temperature in winter exceeds the set minimum value, the steam pipeline 4 is used to introduce steam into the import tar pipeline 5 for heating, so as to increase the flowability of the tar and the tar residue, and avoid the clogging of the thick substance filter 2 by the solidified tar.

[0040] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and inventive concept of the present application, can make equivalent substitutions or changes within the technical range disclosed by the present application, which should be encompassed in the protection scope of the present application.

Claims

1. A system for preventing clogging of a filter of a tar sludge separator, comprising a filter of a tar sludge separator disposed between a tar sludge pre-separator and a tar press pump, the filter of the tar sludge separator being connected to a tar outlet at a bottom of the tar sludge pre-separator via an inlet tar pipe, connected to a tar inlet of the tar press pump via an outlet tar pipe, and connected to a return tar inlet at a top of the tar sludge pre-separator via a return tar pipe; and a solid outlet at a bottom of the filter being connected to a venting tank via a venting pipe; characterized in that, The system for preventing the tar residue separation thick matter filter from being blocked also comprises an inlet flushing pipeline, an outlet flushing pipeline, a bottom backwashing pipeline, a first pressure sensor, a second pressure sensor and a control system; the hot ammonia water outlet of the inlet flushing pipeline is connected with the inlet tar pipeline, and the inlet flushing pipeline is provided with a first control valve; the hot ammonia water outlet of the outlet flushing pipeline is connected with the outlet tar pipeline, and the outlet flushing pipeline is provided with a second control valve; the first pressure sensor is arranged on the inlet tar pipeline downstream of the inlet flushing pipeline, and the second pressure sensor is arranged on the outlet tar pipeline upstream of the outlet flushing pipeline; the signal output ends of the first pressure sensor and the second pressure sensor are connected with the signal input end of the control system, and the signal output end of the control system is connected with the control ends of the first control valve and the second control valve; the hot ammonia water outlet of the bottom backwashing pipeline is connected with the vent pipeline, the bottom backwashing pipeline is provided with a third control valve, the fourth control valve is arranged on the vent pipeline upstream of the bottom backwashing pipeline, and the fifth control valve is arranged on the vent pipeline downstream of the bottom backwashing pipeline; the third control valve, the fourth control valve and the fifth control valve are interlocked controlled by the control system.

2. A system for preventing the clogging of a filter of tar residue separation thick matter according to claim 1, characterized in that, The inlet tar pipeline upstream of the inlet tar pipeline is provided with a steam inlet, and the steam inlet is connected with a steam source through a steam pipeline.

3. A system for preventing the clogging of a filter of tar residue separation thick matter according to claim 1, characterized in that, The thick matter filter is composed of a filter body, a top cover plate, an inner partition plate and a filter screen; the filter body comprises a straight section cylinder at the upper part and a tapered section cylinder at the lower part; one side of the upper part of the filter body is provided with a tar inlet, and the other side of the upper part opposite to the tar inlet is provided with a tar outlet; the inner partition plate is arranged in the straight section cylinder between the tar inlet and the tar outlet; The top of the filter body is detachably connected with the top cover plate, and the top of the inner partition plate is fixedly connected with the top cover plate; the filter screen is arranged in the filter body below the inner partition plate; the inner partition plate has an initial working position and a normal working position; when the inner partition plate is in the initial working position, the inner partition plate is parallel to the connecting line direction of the tar inlet and the tar outlet, and when the inner partition plate is in the normal working position, the inner partition plate is perpendicular to the connecting line direction of the tar inlet and the tar outlet.

4. A system for preventing the clogging of a filter of tar residue separation thick matter according to claim 1, characterized in that, The invention also comprises a stirring device, which is composed of a support, a stirring motor, a stirring paddle and a disturbing mechanism; the thick substance filter is composed of a filter body, a top cover and a filter screen; the filter body comprises a straight section cylinder at the top and a conical section cylinder at the bottom; the upper part of the filter body is provided with a tar inlet at one side and a tar outlet at the other side; the top of the filter body is detachably connected with the top cover; the lower part of the filter body is provided with the filter screen; the support is arranged on the top cover; the stirring motor is installed on the support; the stirring paddle is composed of a stirring shaft and stirring paddle blades; the upper end of the stirring shaft is connected with the motor shaft of the stirring motor; the lower end of the stirring shaft is provided with a plurality of stirring paddle blades; the disturbing mechanism is provided with at least two groups; each group of the disturbing mechanism comprises a disturbing shaft, disturbing blades and a connecting rod; the upper end of the disturbing shaft is hingedly connected with the upper part of the stirring shaft; the lower end of the disturbing shaft is provided with disturbing blades; the inner wall of the upper part of the filter body is provided with a wave-shaped groove in the circumferential direction; one end of the connecting rod is connected with the disturbing shaft; the other end of the connecting rod is clamped in the groove; when the stirring shaft rotates under the driving of the stirring motor, the disturbing shaft rotates and drives the disturbing blades to move up and down along the thick substance filter in a wave flow shape under the action of the connecting rod.

Images