A by-product purification and detection device based on coal gasification to produce SNG

Abstract

The present invention discloses a by-product purification and detection device based on coal gasification to produce SNG, which relates to the field of coal tar purification technology; in order to solve the reflux problem; specifically comprising a detection unit, a reflux pipe 1 and a reflux pipe 2, the inlet of the detection unit is connected to the outlet of the dehydration unit, the detection unit has three outlets, two of which are connected to the reflux pipe 1 and the reflux pipe 2 respectively, and the other outlet is used for discharging; the other end of the reflux pipe 1 is connected to the feed inlet of the water washing unit, and the other end of the reflux pipe 2 is connected to the connecting pipe; the detection unit includes a detection mechanism and a channel control mechanism, and the detection mechanism includes a slow flow shell, a resistor electrode head 1 and a plurality of resistor electrode heads 2. By setting up a detection unit, the present invention utilizes the relationship between the conductivity of the brine and the salt concentration and the relationship between the water content and the thickness of the water layer, thereby realizing the detection of the water content and the salt concentration, and then can also achieve targeted reflux according to the water content and the salt concentration to achieve re-processing, thereby ensuring the reliability of purification.

Description

Technical Field

[0001] The present invention relates to the technical field of coal tar purification, and in particular to a by-product purification and detection device based on coal gasification to produce SNG. Background Art

[0002] When coal gasification is used to produce SNG, a large amount of coal tar will be produced over a long period of time. This coal tar as a by-product needs to be purified.

[0003] During the coal tar purification process, in order to remove the salt in the coal tar, it needs to be washed with water and then dehydrated. However, in the existing technology, the water content and salt concentration of the coal tar cannot be detected after washing and dehydration. This makes it impossible to well control the degree of washing and dehydration, resulting in over-treatment or insufficient treatment.

[0004] After searching, the Chinese patent publication number CN211665004U discloses a coal tar purification system, including a coal tar ammonia water separator, a super centrifuge, a deammonium salt agitator, a sedimentation separator, a first electric desalting tank, a second electric desalting tank, a pressurized dehydration device, etc. The coal tar ammonia water separator and the super centrifuge are used to remove slag from coal tar to obtain deslag coal tar; the deammonium salt agitator, the sedimentation separator, the first electric desalting tank, and the second electric desalting tank are used to desalinate the deslag coal tar to obtain desalted coal tar; the pressurized dehydration device is used to dehydrate the desalted coal tar to obtain desalted dehydrated coal tar.

[0005] The above patent has the following deficiencies: it is unable to detect the water content and salt concentration of the coal tar after washing and dehydration, which makes it impossible to well control the degree of washing and dehydration, resulting in over-treatment or insufficient treatment. Summary of the Invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a by-product purification and detection device based on coal gasification to produce SNG.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A byproduct purification and detection device based on coal gasification to produce SNG is used in conjunction with a coal tar purification system. The coal tar purification system includes a water washing section and a dehydration section connected by a connecting pipe. The coal tar purification detection device includes a detection section, a reflux pipe 1 and a reflux pipe 2. The inlet of the detection section is connected to the outlet of the dehydration section.

[0009] The detection part has three outlets, two of which are connected to the reflux pipe 1 and the reflux pipe 2 respectively, and the other outlet is used for discharging;

[0010] The other end of the reflux pipe 1 is connected to the feed inlet of the water washing section, and the other end of the reflux pipe 2 is connected to the connecting pipe;

[0011] The detection part includes a detection mechanism and a channel control mechanism. The detection mechanism includes a slow-flow shell, a resistor electrode head one and multiple resistor electrode heads two. The resistor electrode head one is fixedly embedded in the lower inner wall of the slow-flow shell. The multiple resistor electrode heads two are arranged longitudinally and fixedly embedded in the other side inner wall of the slow-flow shell. The resistor electrode head one and the resistor electrode head two are connected to the same circuit.

[0012] Preferably: multiple groups of vibration defoaming components are arranged inside the slow-flow shell, and the vibration defoaming components include a hollow cylinder and a rotating shaft. The hollow cylinder is fixed and sealed to the inner wall of the slow-flow shell through a flexible pad, and the rotating shaft is rotatably connected to the inner wall of the hollow cylinder.

[0013] Furthermore: a plurality of groups of metal springs are fixed to the inner wall of the hollow cylinder, and a protrusion that cooperates with the metal springs is fixed to the outer wall of the rotating shaft.

[0014] On the basis of the above-mentioned scheme: a turbine shell is fixed to the water inlet side wall of the slow-flow shell, the inner wall of the turbine shell is connected to the turbine blades through the rotation of the turbine shaft, the turbine blades pass through the interior of the turbine shell and the slow-flow shell, and the outer walls of the turbine shaft and the rotating shaft are fixed with pulleys, and multiple pulleys are coordinated through synchronous belt transmission.

[0015] Among the above schemes, a better scheme is: the channel control mechanism includes an outer shell, slide cylinder 1 and slide cylinder 2, the inner wall of the outer shell is provided with a main channel connected to the slow flow shell, the main channel is connected to a branch channel, the slide cylinder 2 is slidably connected to the inner wall of the main channel, the slide cylinder 1 is slidably connected to the inner wall of the branch channel, and a retaining ring is fixed on the inner wall of the bend of the branch channel.

[0016] As a further solution of the present invention: the inner wall of the outer shell is fixedly embedded with a discharge channel for discharging materials, the inner wall of the slide cylinder 2 is fixed with a baffle, the inner wall of the baffle and the end of the discharge channel are provided with mutually staggered through holes, and one side of the outer shell is provided with two reflux channels cooperating with the slide cylinder 1.

[0017] At the same time, a permanent magnet 1 is fixed to the side wall of the slide cylinder 2, an electromagnet 1 opposite to the permanent magnet is fixed to the inner wall of the outer shell, and a spring 2 is buckled on the opposite side of the slide cylinder 2 and the outer shell.

[0018] As a preferred embodiment of the present invention: a permanent magnet 2 is fixed to the end of the slide cylinder 1, an electromagnet 2 opposite to the permanent magnet 2 is fixed to the inner wall of the outer shell, and a spring 1 is buckled with the opposite side of the slide cylinder 1 and the outer shell.

[0019] At the same time, the magnetic poles of the electromagnet 1 and the permanent magnet 1 are opposite, the magnetic poles of the electromagnet 2 and the permanent magnet 2 are the same, and the electromagnet 1 is connected in series to the main circuit of the resistor electrode head 1 and the resistor electrode head 2, and the electromagnet 2 is connected in series to the bottom resistor electrode head 2.

[0020] As a better solution of the present invention: the outer wall of the slide cylinder 2 is provided with two limit grooves 1, and the inner wall of the outer shell is provided with an elastic clamp 1 that cooperates with the limit groove 1; the side wall of the slide cylinder 1 is provided with two limit grooves 2, and the inner wall of the outer shell is provided with an elastic clamp 2 that cooperates with the limit groove 2.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention, by setting up a detection unit, utilizes the relationship between the conductivity of salt water and its salt concentration, as well as the relationship between the water content and the thickness of the water layer, so as to realize the detection of water content and salt concentration. Then, the water content and salt concentration can be targeted for reflux and re-processing to ensure the reliability of purification.

[0023] 2. The present invention sets a vibration defoaming component. During the detection process, the protrusion and the metal spring are in continuous contact to generate high-frequency and low-amplitude vibrations, so that the vibration can be used to make the coal tar bubbles in the water rise to the oil layer, playing a defoaming function, thereby preventing the waste of coal tar and increasing the accuracy of subsequent detection.

[0024] 3. The present invention drives the rotating shaft by arranging turbine blades. On the one hand, automatic drive can be realized and the layout of the power source can be reduced. On the other hand, the driving speed of the turbine blades is affected by the fluid density. When the water content of the coal tar is greater, the rotation speed of the turbine blades is faster. Therefore, when the water content is greater, more oil bubbles appear in the water layer, the vibration frequency is faster, and the defoaming effect is better, thereby achieving the purpose of adaptive regulation.

[0025] 4. The present invention, by setting up a channel control mechanism, uses the main and branch currents of the resistor electrode head 1 and the resistor electrode head 2 to detect the water content and salt concentration and uses the valve to control the reprocessing process, combined with the drive of the electromagnet, thereby realizing the automatic control process of the non-electric control algorithm and realizing the automatic control of "self-sensing" and "self-control". BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of a by-product purification and detection device based on coal gasification production of SNG proposed by the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the detection part of a by-product purification detection device based on coal gasification production of SNG proposed by the present invention;

[0028] Figure 3 This is a schematic diagram of the detection mechanism structure of a by-product purification detection device based on coal gasification production of SNG proposed by the present invention;

[0029] Figure 4 This is a circuit diagram of a by-product purification and detection device for producing SNG based on coal gasification proposed by the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of a vibration defoaming component of a by-product purification and detection device based on coal gasification production of SNG proposed by the present invention;

[0031] Figure 6 This is a schematic structural diagram of the driving portion of the rotating shaft of a by-product purification and detection device for producing SNG based on coal gasification, proposed by the present invention;

[0032] Figure 7 This is a schematic diagram of the cross-sectional structure of the channel control mechanism of the by-product purification detection device based on coal gasification production SNG proposed by the present invention Figure 1 ;

[0033] Figure 8 This is a schematic diagram of the cross-sectional structure of the channel control mechanism of the by-product purification detection device based on coal gasification production SNG proposed by the present invention Figure 2 .

[0034] In the figure: 1, washing unit; 2, connecting pipe; 3, dehydration unit; 4, detection unit; 5, reflux pipe 1; 6, reflux pipe 2; 7, detection mechanism; 8, channel control mechanism; 9, slow flow shell; 10, vibration defoaming component; 11, resistance electrode head 1; 12, resistance electrode head 2; 13, flexible pad; 14, hollow cylinder; 15, metal spring; 16, protrusion; 17, rotating shaft; 18, turbine shell; 19, turbine blade; 20, turbine shaft; 21, same Step belt; 22. Pulley; 23. Outer shell; 24. Retaining ring; 25. Slide 1; 26. Return channel; 27. Spring 1; 28. Electromagnet 2; 29. ​​Permanent magnet 2; 30. Discharge channel; 31. Electromagnet 1; 32. Spring 2; 33. Permanent magnet 1; 34. Through hole; 35. Slide 2; 36. Limiting groove 1; 37. Elastic clamp 1; 38. Elastic clamp 2; 39. Limiting groove 2; 40. Branch channel; 41. Baffle. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be further described in detail below in conjunction with specific implementation methods.

[0036] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0037] Example 1: A by-product purification and detection device based on coal gasification to produce SNG, which is used in conjunction with a coal tar purification system, such as Figure 1 - Figure 8 As shown, the coal tar purification system includes a water washing section 1 and a dehydration section 3 connected by a connecting pipe 2, and the coal tar purification detection device includes a detection section 4, a reflux pipe 1 5 and a reflux pipe 2 6. The inlet of the detection section 4 is connected to the outlet of the dehydration section 3;

[0038] The detection part 4 has three outlets, two of which are connected to the reflux pipe 1 5 and the reflux pipe 2 6 respectively, and the other outlet is used for discharging;

[0039] The other end of the reflux pipe 1 5 is connected to the feed port of the water washing section 1 , and the other end of the reflux pipe 2 6 is connected to the connecting pipe 2 .

[0040] The detection part 4 includes a detection mechanism 7 and a channel control mechanism 8. The detection mechanism 7 includes a slow-flow shell 9, a resistor electrode head 11 and a plurality of resistor electrode heads 2 12. The resistor electrode head 11 is fixedly embedded in the lower inner wall of the slow-flow shell 9. The plurality of resistor electrode heads 2 12 are arranged longitudinally and fixedly embedded in the other side inner wall of the slow-flow shell 9. The resistor electrode head 11 and the resistor electrode head 2 12 are connected to the same circuit.

[0041] When the device is in use, when the mixture discharged from the dehydration part 3, water will be separated from the coal tar and located in the lower layer. At this time, the water contains salt and will conduct electricity. The thicker the water layer, the higher the water content. At the same time, the more the number of resistor electrode heads 12 connected to the circuit, the more the main current of the circuit composed of the resistor electrode head 11 and the resistor electrode head 2 12 will increase, so the water content can be judged according to the current. When the salt concentration in the water is high, the conductivity of the water will increase, which will increase the current of the circuit of the lowest resistor electrode head 2 12, so that the salt concentration in the water can be judged by the current of the branch. Based on this, the following logic is possessed:

[0042] S1: When it is judged that the water content is small and the salt concentration is low, it means that the washing and dehydration are sufficient and the material is discharged directly;

[0043] S2: When it is judged that the water content is high, the high water content indicates that the dehydration is not sufficient, and the high salt concentration may indicate that the water washing is not sufficient. At this time, the discharge port of the detection part 4 is blocked;

[0044] S21: Further testing the branch line. When the salt concentration is high, the mixed liquid will flow back through the reflux pipe 1 5 to the feed inlet of the water washing section 1 for further water washing and dehydration.

[0045] S22: When the salt concentration is low, the mixed liquid will return to the connecting pipe 2 through the reflux pipe 2 6 and be dehydrated again through the dehydration part 3.

[0046] Furthermore, since the coal tar purification process is a mature process, its water washing and dehydration steps are conventional technical means, and this embodiment does not involve any creative work on them, so they will not be described in detail.

[0047] This device, by setting up a detection part 4, utilizes the relationship between the conductivity of salt water and its salt concentration, as well as the relationship between the water content and the thickness of the water layer, so as to detect the water content and salt concentration. Then, the device can also perform targeted reflux according to the water content and salt concentration to achieve re-processing, thereby ensuring purification reliability.

[0048] After washing and dehydration, there is a certain viscous resistance between water and coal tar, which may cause oil bubbles of coal tar to be contained in the water. On the one hand, it will cause waste, and on the other hand, it will affect the accuracy of subsequent detection. Therefore, in order to solve the accuracy problem; Figure 3 、 5 As shown in Figure 6, multiple groups of vibration defoaming components 10 are arranged inside the slow-flow shell 9. The vibration defoaming components 10 include a hollow cylinder 14 and a rotating shaft 17. The hollow cylinder 14 is fixed and sealed to the inner wall of the slow-flow shell 9 through a flexible pad 13. The rotating shaft 17 is rotatably connected to the inner wall of the hollow cylinder 14. Multiple groups of metal springs 15 are fixed to the inner wall of the hollow cylinder 14. The outer wall of the rotating shaft 17 is fixed with a protrusion 16 that cooperates with the metal springs 15.

[0049] During the detection process, the driving shaft 17 rotates, thereby driving the protrusion 16 to rotate. The protrusion 16 is in constant contact with the metal dome 15, which moves the metal dome 15 and then rebounds. During this process, high-frequency low-amplitude vibration is generated.

[0050] This device is provided with a vibration defoaming component 10. During the detection process, the protrusion 16 and the metal spring 15 are in continuous contact to generate high-frequency and low-amplitude vibrations, so that the vibration can be used to make the coal tar bubbles in the water rise to the oil layer, thereby playing a defoaming function, thereby preventing the waste of coal tar and increasing the accuracy of subsequent detection.

[0051] To solve the driver problem; Figure 6As shown, a turbine shell 18 is fixed to the water inlet side wall of the slow flow shell 9, and the inner wall of the turbine shell 18 is rotatably connected to the turbine blades 19 through the turbine shaft 20. The turbine blades 19 pass through the interior of the turbine shell 18 and the slow flow shell 9. The outer walls of the turbine shaft 20 and the rotating shaft 17 are fixed with pulleys 22, and multiple pulleys 22 are driven by synchronous belts 21.

[0052] When coal tar flows into the slow flow shell 9, it drives the turbine blades 19 to rotate, thereby driving the rotating shaft 17 to rotate through the synchronous belt 21 and the pulley 22, and the driving speed of the turbine blades 19 is affected by the fluid density. When the water content of the coal tar is greater, the rotation speed of the turbine blades 19 is faster.

[0053] This device drives the rotating shaft 17 by arranging turbine blades 19. On the one hand, it can realize automatic drive and reduce the layout of the power source. On the other hand, the driving speed of the turbine blades 19 is affected by the fluid density. When the water content of the coal tar is greater, the rotation speed of the turbine blades 19 is faster. As a result, when the water content is greater, more oil bubbles appear in the water layer, the vibration frequency is faster, and the defoaming effect is better, thereby achieving the purpose of adaptive adjustment.

[0054] When this embodiment is in use, when the mixture discharged from the dehydration part 3, water will be separated from the coal tar and located in the lower layer. At this time, the water contains salt and will conduct electricity. The thicker the water layer, the higher the water content. At the same time, the more the number of resistor electrode heads 12 connected to the circuit, the more the main current of the circuit composed of the resistor electrode head 11 and the resistor electrode head 2 12 will increase, so the water content can be judged according to the current. When the salt concentration in the water is high, the conductivity of the water will increase, which will increase the current of the circuit of the resistor electrode head 2 12 at the bottom, so that the branch circuit can be used. The magnitude of the current determines the salt concentration in the water. When coal tar flows into the slow flow shell 9, it drives the turbine blades 19 to rotate, thereby driving the rotating shaft 17 to rotate through the synchronous belt 21 and the pulley 22, and the driving speed of the turbine blades 19 is affected by the fluid density. When the water content of the coal tar is greater, the speed of the turbine blades 19 is faster, and the rotating shaft 17 rotates, thereby driving the protrusion 16 to rotate. The continuous contact between the protrusion 16 and the metal shrapnel 15 will move the metal shrapnel 15, and then the metal shrapnel 15 will rebound, and high-frequency low-amplitude vibration will be generated in this process.

[0055] Example 2: A by-product purification and detection device based on coal gasification to produce SNG, such as Figure 1 - Figure 8As shown, in order to solve the problem of automatic control; this embodiment makes the following improvements on the basis of embodiment 1: the channel control mechanism 8 includes an outer shell 23, a slide 1 25 and a slide 2 35, the inner wall of the outer shell 23 is provided with a main channel connected to the slow flow shell 9, the main channel is connected to the branch channel 40, the slide 2 35 is slidably connected to the inner wall of the main channel, the slide 1 25 is slidably connected to the inner wall of the branch channel 40, and a retaining ring 24 is fixed to the inner wall of the bend of the branch channel 40.

[0056] The inner wall of the outer shell 23 is fixedly embedded with a discharge channel 30 for discharging materials, the inner wall of the slide 2 35 is fixed with a baffle 41, and the inner wall of the baffle 41 and the end of the discharge channel 30 are provided with mutually staggered through holes 34. One side of the outer shell 23 is provided with two reflux channels 26 that cooperate with the slide 1 25.

[0057] A permanent magnet 1 33 is fixed to the side wall of the slide 2 35 , an electromagnet 1 31 opposite to the permanent magnet 1 33 is fixed to the inner wall of the outer shell 23 , and a spring 2 32 is buckled on the opposite side of the slide 2 35 and the outer shell 23 , a permanent magnet 29 is fixed to the end of the slide 1 25 , an electromagnet 28 opposite to the permanent magnet 29 is fixed to the inner wall of the outer shell 23 , and a spring 1 27 is buckled on the opposite side of the slide 1 25 and the outer shell 23 .

[0058] The magnetic poles of the electromagnet 1 31 and the permanent magnet 1 33 are opposite, the magnetic poles of the electromagnet 2 28 and the permanent magnet 2 29 are the same, and the electromagnet 1 31 is connected in series to the main circuit of the resistor electrode head 1 11 and the resistor electrode head 2 12, and the electromagnet 2 28 is connected in series to the bottom resistor electrode head 2 12.

[0059] The outer wall of the slide 2 35 is provided with two limiting grooves 36, and the inner wall of the outer shell 23 is provided with an elastic clamp 37 that cooperates with the limiting groove 36. The side wall of the slide 1 25 is provided with two limiting grooves 39, and the inner wall of the outer shell 23 is provided with an elastic clamp 38 that cooperates with the limiting groove 39.

[0060] When this embodiment is used,

[0061] S1: When it is judged that the water content is small and the salt concentration is low, it means that the water washing and dehydration are sufficient. At this time, the water layer is small, and only the bottom resistance electrode head 2 12 is connected to the resistance electrode head 1 11. In addition, the conductivity of water is low and the resistance is large. The current of electromagnet 1 31 is small, so that the magnetic attraction between electromagnet 1 31 and permanent magnet 1 33 is small. Slide 2 35 is located at the far left due to the elastic force of spring 2 32. At this time, slide 2 35 blocks the branch channel 40, and the purified coal tar enters the drainage channel 30 through the through hole 34, and then is directly discharged through the drainage channel 30;

[0062] S2: When it is determined that the water content is high, the number of connected resistor electrode heads 12 increases, the current in the main circuit increases, the magnetic attraction between electromagnet 1 31 and permanent magnet 1 33 increases, the slide 35 moves to the right, the end face of the drainage channel 30 is sealed against the end face of the baffle 41, and the branch channel 40 is exposed, allowing coal tar to flow into the branch channel 40;

[0063] S21: When the salt concentration is high, the current of electromagnet 2 28 is small, so that slide 1 25 is pulled by spring 1 27 and is located at the right position. At this time, slide 1 25 is connected to the right reflux channel 26, and the coal tar returns to the washing section 1 for re-washing.

[0064] S22: When the salt concentration is low, the current of electromagnet 2 28 is large, so that slide 1 25 is pulled by spring 1 27 and is located at the left station. At this time, slide 1 25 is connected to the reflux channel 26 on the left, and the coal tar returns to the dehydration part 3 for re-dehydration.

[0065] This device, by setting up a channel control mechanism 8, uses the main and branch currents of the resistor electrode head 11 and the resistor electrode head 2 12 to detect the water content and salt concentration and uses the valve to control the reprocessing process, combined with the drive of the electromagnet, thereby realizing the automatic control process of the non-electric control algorithm and realizing the automatic control of "self-sensing" and "self-control".

[0066] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A by-product purification detection device for producing SNG based on coal gasification, which is used in conjunction with a coal tar purification system, wherein the coal tar purification system comprises a water washing section (1) and a dehydration section (3) connected by a connecting pipe (2), and the coal tar purification detection device comprises a detection section (4), a reflux pipe 1 (5) and a reflux pipe 2 (6), wherein the inlet of the detection section (4) is connected to the outlet of the dehydration section (3), and is characterized in that: The detection part (4) has three outlets, two of which are respectively connected to the reflux pipe 1 (5) and the reflux pipe 2 (6), and the other outlet is used for discharging materials; The other end of the reflux pipe 1 (5) is connected to the feed port of the water washing section (1), and the other end of the reflux pipe 2 (6) is connected to the connecting pipe (2); The detection portion (4) includes a detection mechanism (7) and a channel control mechanism (8), the detection mechanism (7) includes a slow-flow shell (9), a resistor electrode head one (11) and a plurality of resistor electrode heads two (12), the resistor electrode head one (11) is fixedly embedded in the lower inner wall of the slow-flow shell (9), the plurality of resistor electrode heads two (12) are arranged longitudinally and fixedly embedded in the other inner wall of the slow-flow shell (9), and the resistor electrode head one (11) and the resistor electrode head two (12) are connected to the same circuit.

2. A by-product purification and detection device based on coal gasification production of SNG according to claim 1, characterized in that: A plurality of groups of vibration defoaming components (10) are arranged inside the slow-flow shell (9), and the vibration defoaming components (10) include a hollow cylinder (14) and a rotating shaft (17). The hollow cylinder (14) is fixed and sealingly embedded in the inner wall of the slow-flow shell (9) through a flexible pad (13), and the rotating shaft (17) is rotatably connected to the inner wall of the hollow cylinder (14).

3. The by-product purification and detection device for producing SNG based on coal gasification according to claim 2, characterized in that: Multiple groups of metal shrapnel (15) are fixed to the inner wall of the hollow cylinder (14), and a protrusion (16) that cooperates with the metal shrapnel (15) is fixed to the outer wall of the rotating shaft (17).

4. The by-product purification and detection device for producing SNG based on coal gasification according to claim 3, characterized in that: A turbine shell (18) is fixed to the water inlet side wall of the slow flow shell (9), and the inner wall of the turbine shell (18) is rotatably connected to turbine blades (19) via a turbine shaft (20). The turbine blades (19) penetrate the interior of the turbine shell (18) and the slow flow shell (9). Pulleys (22) are fixed to the outer walls of the turbine shaft (20) and the rotating shaft (17), and the plurality of pulleys (22) are coupled through a synchronous belt (21).

5. The by-product purification and detection device for producing SNG based on coal gasification according to claim 1, characterized in that: The channel control mechanism (8) includes an outer shell (23), a slide cylinder 1 (25) and a slide cylinder 2 (35). The inner wall of the outer shell (23) is provided with a main flow channel connected to the slow flow shell (9), and the main flow channel is connected to the branch flow channel (40). The slide cylinder 2 (35) is slidably connected to the inner wall of the main flow channel, and the slide cylinder 1 (25) is slidably connected to the inner wall of the branch flow channel (40). A retaining ring (24) is fixed to the inner wall of the bending part of the branch flow channel (40).

6. The by-product purification and detection device for producing SNG based on coal gasification according to claim 5, characterized in that: A discharge channel (30) for discharging materials is fixedly embedded on the inner wall of the outer shell (23), a baffle (41) is fixed on the inner wall of the second slide (35), and mutually offset through holes (34) are provided on the inner wall of the baffle (41) and the end of the discharge channel (30). Two return flow channels (26) cooperating with the first slide (25) are provided on one side of the outer shell (23).

7. The by-product purification and detection device for producing SNG based on coal gasification according to claim 6, characterized in that: A permanent magnet 1 (33) is fixed to the side wall of the slide cylinder 2 (35), an electromagnet 1 (31) opposite to the permanent magnet 1 (33) is fixed to the inner wall of the outer shell (23), and a spring 2 (32) is buckled on the opposite side of the slide cylinder 2 (35) and the outer shell (23).

8. The by-product purification and detection device for producing SNG based on coal gasification according to claim 7, characterized in that: A second permanent magnet (29) is fixed to the end of the slide cylinder (25), an electromagnet (28) is fixed to the inner wall of the outer shell (23) and is opposite to the second permanent magnet (29), and a spring (27) is buckled on the opposite side of the slide cylinder (25) and the outer shell (23).

9. The by-product purification and detection device for producing SNG based on coal gasification according to claim 8, characterized in that: The magnetic poles of the electromagnet 1 (31) and the permanent magnet 1 (33) are opposite, the magnetic poles of the electromagnet 2 (28) and the permanent magnet 2 (29) are the same, and the electromagnet 1 (31) is connected in series to the main circuit of the resistor electrode head 1 (11) and the resistor electrode head 2 (12), and the electromagnet 2 (28) is connected in series to the bottom resistor electrode head 2 (12).

10. The by-product purification and detection device for producing SNG based on coal gasification according to claim 9, characterized in that: The outer wall of the slide cylinder (35) is provided with two limiting grooves (36), and the inner wall of the outer shell (23) is provided with an elastic clamp (37) that cooperates with the limiting groove (36) in a limiting manner. The side wall of the slide cylinder (25) is provided with two limiting grooves (39), and the inner wall of the outer shell (23) is provided with an elastic clamp (38) that cooperates with the limiting groove (39) in a limiting manner.

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