Oil-rich coal in-situ pyrolysis product extraction reaction kettle with separation function

Abstract

The invention provides an oil-rich coal in-situ pyrolysis product extraction reaction kettle with a separation function. The oil-rich coal in-situ pyrolysis product extraction reaction kettle comprises a reaction kettle assembly, a driving assembly, a backflow assembly, a dispersion assembly and a wall scraping assembly. Extraction of oil-rich coal in-situ pyrolysis products is carried out in the reaction kettle, cyclic mixing of the products is realized by utilizing the enclosure, the products can be conveyed along the inner wall of the kettle body by arranging the flow guide disc, impact force on the discharge pipe is relieved, and the spoilers are driven to rotate to prevent the problem of impurity precipitation; a plurality of assemblies are arranged to realize compound stirring of products at different positions and are matched with a propelling paddle in the enclosure to provide power, meanwhile, the inner wall of the kettle body can realize continuous scraping, and meanwhile, a dispersing assembly is arranged on the top layer of reactants to realize further stirring, so that impurities in an extract enter the enclosure again after being fully mixed; continuous circulating conveying of reactants is achieved, sufficient mixing is achieved by changing the reverse stirring direction, the mixing effect is further improved, and the processing efficiency of the reaction kettle is improved.

Description

Technical Field

[0001] The invention relates to an oil-rich coal in-situ pyrolysis product extraction reactor with a separation function, belonging to the technical field of oil-rich coal processing. Background Art

[0002] Oil-rich coal refers to a special type of coal that can be used to extract a high proportion of tar or liquid hydrocarbons through pyrolysis and other processes. d ) greater than 7% can be regarded as oil-rich coal in a broad sense, with oil and gas generation potential similar to oil shale. It can be converted into light oil, gas and chemicals through in-situ or ground pyrolysis technology, which is an important direction of coal-based clean energy. The temperature (500-800℃) and catalyst need to be optimized to increase the oil yield. The pyrolysis process may produce sulfur and nitrogen pollutants, which require supporting purification technology.

[0003] The in-situ pyrolysis products of oil-rich coal include gaseous products, liquid products, solid residues and other components. The gaseous products mainly contain methane, hydrogen, carbon monoxide and a small amount of hydrocarbon gas, which can be used as fuel or chemical raw materials; the liquid products mainly include hydrocarbon mixtures such as tar and light oil, which need to be further distilled and purified into fuel oil or chemicals; the solid residues mainly include semi-coke or residual carbon, which can be used for combustion to generate electricity or as adsorption materials; other components may contain impurities such as sulfur and nitrogen compounds and require environmentally friendly treatment.

[0004] When extracting the in-situ pyrolysis products of oil-rich coal, it is necessary to use a reactor to perform distillation, purification, extraction and other steps again to achieve the separation of purer products. However, due to the large number of impurities in the pyrolysis products, it is difficult to ensure the effective separation of each component during extraction in the reactor. In particular, during the extraction process, since different components cannot be effectively separated, there are more impurities in different components, and uneven precipitation is likely to occur during the reaction, which affects the subsequent extraction effect and reduces the efficiency of extracting products from the reactants. Summary of the Invention

[0005] In order to solve the above-mentioned technical problems, the present invention provides an oil-rich coal in-situ pyrolysis product extraction reactor with a separation function.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] The present invention provides a reactor for extracting in-situ pyrolysis products of oil-rich coal with a separation function, and the reactor for extracting in-situ pyrolysis products of oil-rich coal with a separation function comprises:

[0008] A reactor assembly, the reactor assembly consisting of a reactor body, the outer wall of which is fixedly connected to a shell, and the bottom of the reactor body is fixedly connected to an umbrella-shaped guide plate via a plurality of vertical rods;

[0009] The driving assembly is composed of a kettle cover, which is sealed and fitted with the top edge of the kettle body. A stirring shaft is rotatably connected to the inside of the kettle cover, and the bottom end of the stirring shaft is rotatably connected to the guide plate. The stirring shaft below the guide plate is fixedly connected to the spoiler, and the stirring shaft above the guide plate is fixedly connected to the propeller.

[0010] A reflux assembly, wherein the reflux assembly is fixedly connected to the interior of the kettle body, and the stirring shaft and the propeller at the bottom end thereof are both located inside the reflux assembly;

[0011] A dispersion assembly, the dispersion assembly is fixedly connected to the interior of the kettle cover, a dispersion paddle is provided at the bottom of the dispersion assembly, and the dispersion paddle is arranged above the reflux assembly;

[0012] The scraping wall assembly is fixedly connected to the surface of the stirring shaft, the scraping wall assembly is correspondingly arranged between the reflux assembly and the dispersion assembly, and a stirring mechanism is provided on the scraping wall assembly.

[0013] In this technical solution, the top and bottom of the kettle body are fixedly connected to the upper partition and the lower partition respectively. The upper partition and the lower partition are respectively located on both sides of the shell. The upper partition is fixedly connected to the lower partition through several evenly distributed vertical rods. Several vertical rods are evenly distributed to the outside of the shell. A cavity for installing the electric heating rod is formed inside the shell, and the lower partition is fixedly connected to the support legs.

[0014] In this technical solution, the bottom of the kettle body is fixedly connected to the discharge pipe, and the end of the discharge pipe is fixedly connected to the valve. The discharge pipe is located above the guide plate, and the guide plate is arranged below the reflux assembly. The guide plate and the reflux assembly are provided with a gap for transporting reactants. A spoiler is provided between the discharge pipe and the guide plate, and the spoiler is located between the vertical rods.

[0015] In this technical solution, the edge of the kettle cover is fixedly connected to the top edge of the kettle body by several screws, a drive motor is fixedly installed on the top of the kettle cover, the output end of the drive motor is fixedly connected to the stirring shaft, and the stirring shaft is connected through a coupling. The coupling is located below the dispersion component, and a feed pipe is fixedly connected to the top of the kettle cover on the side of the drive motor.

[0016] In this technical solution, the reflux assembly is composed of an enclosure with an annular structure, the bottom edge of the enclosure is fixedly connected to the bottom of the kettle body through a number of support rods, the top edge of the enclosure is provided with bevel teeth, the enclosure is arranged above the guide plate, and an agitator shaft and a propeller are provided inside the enclosure. The propeller is a conical blade structure, and the outer diameter of the propeller is smaller than the inner diameter of the enclosure.

[0017] In the present technical solution, the dispersion component is composed of a cross bar and a limiting shaft, one end of the cross bar is fixedly connected to the inner wall of the kettle cover, the number of cross bars is several, and the other ends of several cross bars are fixedly connected to the limiting shaft, the stirring shaft is rotatably connected to the inside of the limiting shaft, the bottom end of the limiting shaft is rotatably connected to a transmission gear, and another transmission gear is fixedly connected to the stirring shaft, the two transmission gears are meshed with each other, and the transmission gear is located between the limiting shaft and the turntable, and the surface of the stirring shaft below the transmission gear is movably sleeved with a turntable, the edge of the turntable is fixedly connected to the gear ring, and the inner wall of the gear ring is meshed with the transmission gear.

[0018] In this technical solution, the turntable is rotatably connected to the surface of the stirring shaft, the turntable is located above the coupling, and a plurality of evenly distributed dispersion paddles are fixedly connected to the bottom edge of the turntable, and each dispersion paddle is arranged above the enclosure.

[0019] In this technical solution, the scraping assembly consists of a fixed rod and an annular rod. The fixed rod is fixedly connected to the surface of the stirring shaft. The fixed rod consists of several evenly distributed rod bodies. The distal ends of adjacent rod bodies are fixedly connected to the annular rod. Each rod body end is fixedly connected to the scraping mechanism. The fixed rod is located above the enclosure, and the annular rod is located outside the enclosure.

[0020] In this technical solution, the scraping assembly consists of a connecting rod and a scraper. The top end of the connecting rod is fixedly connected to the fixed rod, and the side wall of the connecting rod is fixedly connected to the scraper. The connecting rod and the scraper are both arc-shaped structures, and the scraper is fit-fittingly connected to the inner wall of the kettle body. The bottom end of the connecting rod is fixedly connected to the fixed rod through an inclined stabilizing rod, and the bottom ends of two adjacent connecting rods are fixedly connected to the reinforcement rod of the annular structure.

[0021] In this technical solution, the stirring mechanism is located between the fixed rods, and the stirring mechanism consists of a bevel gear and a stirring paddle. The bevel gear and the stirring paddle are respectively arranged on the inner and outer sides of the annular rod. The bevel gear is fixedly connected to one end of the stirring paddle, and the stirring paddle is rotatably connected to the inside of the annular rod. The bevel gear is meshed with the helical teeth. The stirring paddle is a bent structure, and the stirring paddle is located outside the enclosure.

[0022] On the basis of conforming to the common sense in this field, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0023] The positive progressive effect of the present invention is that: the above-mentioned oil-rich coal in situ pyrolysis product extraction reactor with separation function extracts the oil-rich coal in situ pyrolysis product in the reactor, uses the enclosure to realize the circulation mixing of the product, and sets the guide plate to enable the product to be transported along the inner wall of the kettle body, while reducing the impact force on the discharge pipe, and driving the spoiler to rotate to prevent the precipitation of impurities, and multiple components are set to realize the composite stirring of products at different positions, and cooperate with the propulsion paddle inside the enclosure to provide power to realize the transportation of reactants. At the same time, the inner wall of the kettle body can be continuously scraped to prevent the coking problem on the kettle wall. At the same time, a dispersion component is set on the top layer of the reactant to realize further stirring, so that the impurities in the extract are fully mixed and then enter the enclosure again, realizing continuous circulation transportation of the reactants, and achieving full mixing by changing the stirring direction, further improving the mixing effect, and improving the processing efficiency of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0025] Figure 2 It is a schematic diagram of the external three-dimensional structure of the present invention.

[0026] Figure 3 It is a schematic diagram of the half-section structure of the present invention.

[0027] Figure 4 For the present invention Figure 3 Schematic diagram of the locally enlarged structure at point A in the middle.

[0028] Figure 5 For the present invention Figure 3 Schematic diagram of the locally enlarged structure at point B in the middle.

[0029] Figure 6 It is a schematic diagram of the three-dimensional structure of the stirring shaft of the present invention.

[0030] Figure 7 It is a schematic diagram of the internal front view structure of the present invention.

[0031] Figure 8 It is a schematic diagram of the external front view structure of the present invention.

[0032] Figure 9 It is a schematic diagram of the external side structure of the present invention.

[0033] Figure 10 It is a schematic diagram of the external structure of the present invention when viewed from above.

[0034] Description of Reference Numerals

[0035] 100, reactor assembly; 101, reactor body; 102, shell; 103, upper partition; 104, lower partition; 105, vertical pole; 106, support leg; 107, guide plate; 108, discharge pipe;

[0036] 200, drive assembly; 201, kettle cover; 202, screws; 203, drive motor; 204, stirring shaft; 205, propeller; 206, spoiler; 207, coupling; 208, feed pipe;

[0037] 300, reflux assembly; 301, enclosure; 302, bevel gear; 303, support rod;

[0038] 400, dispersion assembly; 401, crossbar; 402, limit shaft; 403, transmission gear; 404, turntable; 405, ring gear; 406, dispersion paddle;

[0039] 500, scraper assembly; 501, fixed rod; 502, annular rod; 503, connecting rod; 504, scraper; 505, stabilizing rod; 506, reinforcing rod; 507, bevel gear; 508, stirring paddle. DETAILED DESCRIPTION

[0040] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0041] like Figure 1-10 As shown, the oil-rich coal in-situ pyrolysis product extraction reactor with separation function includes:

[0042] The reactor assembly 100 is composed of a reactor body 101, the outer wall of which is fixedly connected to a shell 102, and the bottom of the reactor body 101 is fixedly connected to an umbrella-shaped guide plate 107 via a plurality of vertical rods;

[0043] The drive assembly 200 is composed of a kettle cover 201, which is sealed and fitted with the top edge of the kettle body 101. A stirring shaft 204 is rotatably connected to the inside of the kettle cover 201. The bottom end of the stirring shaft 204 is rotatably connected to the guide plate 107. The stirring shaft 204 located below the guide plate 107 is fixedly connected to the spoiler 206, and the stirring shaft 204 located above the guide plate 107 is fixedly connected to a propeller.

[0044] The reflux assembly 300 is fixedly connected to the interior of the kettle body 101, and the stirring shaft 204 and the propulsion paddle at the bottom thereof are both located inside the reflux assembly 300;

[0045] A dispersion assembly 400, which is fixedly connected to the interior of the kettle cover 201. A dispersion paddle 406 is provided at the bottom of the dispersion assembly 400, and the dispersion paddle 406 is disposed above the reflux assembly 300;

[0046] The wall scraping assembly 500 is fixedly connected to the surface of the stirring shaft 204 . The wall scraping assembly 500 is correspondingly arranged between the reflux assembly 300 and the dispersion assembly 400 , and a stirring mechanism is provided on the wall scraping assembly 500 .

[0047] The top and bottom of the kettle body 101 are fixedly connected to the upper partition 103 and the lower partition 104 respectively. The upper partition 103 and the lower partition 104 are respectively located on both sides of the shell 102. The upper partition 103 is fixedly connected to the lower partition 104 through a number of evenly distributed vertical rods 105. The vertical rods 105 are evenly distributed to the outside of the shell 102. A cavity for installing the electric heating rod is formed inside the shell 102. The lower partition 104 is fixedly connected to the legs 106; the bottom of the kettle body 101 is connected to the discharge pipe 1 08 is fixedly connected to discharge the extract to achieve separation of the reactants, which is convenient for processing the reactants in the kettle body 101 to achieve the separation function. The end of the discharge pipe 108 is fixedly connected to the valve, and the discharge pipe 108 is located above the guide plate 107, and the guide plate 107 is arranged below the reflux component 300, and the guide plate 107 and the reflux component 300 are provided with a gap for conveying the reactants. A spoiler 206 is provided between the discharge pipe 108 and the guide plate 107, and the spoiler 206 is located between the vertical rods.

[0048] In this technical solution, the upper partition 103 and the lower partition 104 are used to reinforce the kettle body 101, are connected by the vertical rod 105, and are supported by the support legs 106. A shell 102 is provided for the installation of the electric heating rod to facilitate heating of the kettle body 101. When the reaction is completed, the valve on the discharge pipe 108 can be opened for discharge, and the guide plate 107 is used to block the reactants at the reflux component 300 to avoid excessive impact on the valve. At the same time, the guide plate 107 can be used to guide the reactants so that they can be transported upward along the inner wall of the kettle body 101 to complete the cycle, and can drive the spoiler 206 to rotate at the same time during stirring. The spoiler 206 can break up the sediment at the bottom and fully mix it with the reactants to prevent the precipitation of impurities at the bottom.

[0049] The edge of the kettle cover 201 is fixedly connected to the top edge of the kettle body 101 by several screws 202, and a driving motor 203 is fixedly installed on the top of the kettle cover 201. The output end of the driving motor 203 is fixedly connected to the stirring shaft 204, and the stirring shaft 204 is connected through a coupling 207. The coupling 207 is located below the dispersion component 400, and a feed pipe 208 is fixedly connected to the top of the kettle cover 201 on the side of the driving motor 203; the reflux component 300 is composed of an annular structure of the enclosure 301, the bottom edge of the enclosure 301 is fixedly connected to the bottom of the kettle body 101 by several support rods 303, and the top edge of the enclosure 301 is provided with bevel teeth 302. The enclosure 301 is arranged above the guide plate 107, and a stirring shaft 204 and a propeller are provided inside the enclosure 301. The propeller is a conical blade structure, and the outer diameter of the propeller is smaller than the inner diameter of the enclosure 301.

[0050] In this technical solution, the kettle cover 201 can be fixed to the kettle body 101 by screws 202. During stirring, the drive motor 203 is started to drive the stirring shaft 204 to rotate in the middle of the kettle body 101 and the guide plate 107. When the stirring shaft 204 rotates, it drives the propulsion paddle and the spoiler 206 to rotate synchronously. The propulsion paddle pushes the reactants inside the enclosure 301 toward each other. At this time, the reactants are discharged to the edge of the inner wall of the kettle body 101 through the guide of the guide plate 107, and the negative pressure above the enclosure 301 causes the reactants to enter the interior of the enclosure 301, thereby enabling the reactants to achieve a continuous circulation conveying function on the inner and outer walls of the enclosure 301.

[0051] The dispersion assembly 400 is composed of a cross bar 401 and a limiting shaft 402. One end of the cross bar 401 is fixedly connected to the inner wall of the kettle cover 201. There are several cross bars 401, and the other ends of the several cross bars 401 are fixedly connected to the limiting shaft 402. The stirring shaft 204 is rotatably connected to the inner wall of the limiting shaft 402. The bottom end of the limiting shaft 402 is rotatably connected to a transmission gear 403. Another transmission gear 403 is fixedly connected to the stirring shaft 204. The two transmission gears 403 are meshed with each other, and the transmission gear 403 is located at the limiting shaft. The turntable 404 is movably connected to the surface of the stirring shaft 204 located below the transmission gear 403, and the edge of the turntable 404 is fixedly connected to the ring gear 405, and the inner wall of the ring gear 405 is meshed with the transmission gear 403; the turntable 404 is rotatably connected to the surface of the stirring shaft 204, and the turntable 404 is located above the coupling 207. A number of evenly distributed dispersion paddles 406 are fixedly connected to the bottom edge of the turntable 404, and each dispersion paddle 406 is arranged above the enclosure 301.

[0052] In the present technical solution, when the stirring shaft 204 rotates, the stirring shaft 204 is stably rotated by the limiting shaft 402 on the cross bar 401, and at the same time drives the transmission gear 403 to rotate. The mutual engagement of the transmission gear 403 causes the ring gear 405 and the turntable 404 to rotate synchronously, thereby driving the dispersion paddle 406 to rotate, so that the dispersion paddle 406 is rotated in the opposite direction of the stirring shaft 204, so that the reactants entering the enclosure 301 are broken up by the dispersion paddle 406 and then circulated, and the turntable 404 is limited by the top surface of the coupling 207 to achieve its stable transmission.

[0053] The scraping assembly 500 is composed of a fixed rod 501 and an annular rod 502. The fixed rod 501 is fixedly connected to the surface of the stirring shaft 204. The fixed rod 501 is composed of a number of evenly distributed rod bodies. The distal ends of adjacent rod bodies are fixedly connected to the annular rod 502. Each rod end is fixedly connected to the scraping mechanism. The fixed rod 501 is located above the enclosure 301, and the annular rod 502 is located outside the enclosure 301. The scraping assembly is composed of a connecting rod 503 and a scraper 504. The top of the connecting rod 503 is fixedly connected to the fixed rod 501, and the side wall of the connecting rod 503 is fixedly connected to the scraper 504. The connecting rod 503 and the scraper 504 are both arc-shaped structures, and the scraper 504 is fixedly connected to the kettle body 1. 01 inner wall is fitted and connected, the bottom end of the connecting rod 503 is fixedly connected to the fixed rod 501 through the inclined stabilizing rod 505, and the bottom ends of the two adjacent connecting rods 503 are fixedly connected to the reinforcing rod 506 of the annular structure; the stirring mechanism is located between the fixed rods 501, and the stirring mechanism is composed of a bevel gear 507 and a stirring paddle 508, and the bevel gear 507 and the stirring paddle 508 are respectively arranged on the inner and outer sides of the annular rod 502, the bevel gear 507 is fixedly connected to one end of the stirring paddle 508, and the stirring paddle 508 is rotatably connected to the inside of the annular rod 502, the bevel gear 507 is meshed with the helical teeth 302, the stirring paddle 508 is a bent structure, and the stirring paddle 508 is located outside the enclosure.

[0054] In this technical solution, the stirring shaft 204 drives the fixed rod 501 to rotate synchronously during the rotation process, the annular rod 502 realizes the stability of the fixed rod 501, and then drives the connecting rod 503 to rotate. When the connecting rod 503 drives the scraper 504 to rotate, it contacts the inner wall of the kettle body 101 to achieve scraping, thereby avoiding the coking problem caused by high temperature environment. At the same time, the stabilizing rod 505 and the reinforcing rod 506 can ensure the stability between the connecting rod 503 and the fixed rod 501, and realize their stable rotation. When the annular rod 502 rotates, it drives the stirring paddle 50 8 rotates synchronously, at this time, the bevel gear 507 rolls on the helical teeth 302, thereby driving the stirring paddle 508 to continuously stir the reactants above. The design of the helical teeth 302 allows the reactant residue to flow down automatically, which is convenient for subsequent cleaning. The stirring paddle 508 is set to a bent structure so that the blades on the stirring paddle 508 can continuously rotate along the corrugated shape of the annular structure, which can achieve effective disturbance of the reactants above and cooperate with the dispersion paddle 406 to achieve effective stirring, avoid the problem of reactant precipitation, and effectively improve the stirring efficiency, thereby improving the use efficiency of the reactor.

[0055] The present invention is not limited to the above-described embodiments. Any changes in shape or structure fall within the scope of protection of the present invention. The scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention. Such changes and modifications shall fall within the scope of protection of the present invention.

Claims

1. An oil-rich coal in-situ pyrolysis product extraction reactor with separation function, characterized in that: The oil-rich coal in-situ pyrolysis product extraction reactor with separation function includes: A reactor assembly (100), the reactor assembly (100) comprising a reactor body (101), the outer wall of the reactor body (101) being fixedly connected to a shell (102), and the bottom of the reactor body (101) being fixedly connected to an umbrella-shaped guide plate (107) via a plurality of vertical rods; A drive assembly (200) is composed of a kettle cover (201), the kettle cover (201) is sealed and fitted with the top edge of the kettle body (101), a stirring shaft (204) is rotatably connected inside the kettle cover (201), the bottom end of the stirring shaft (204) is rotatably connected to the guide plate (107), the stirring shaft (204) located below the guide plate (107) is fixedly connected to the spoiler (206), and the stirring shaft (204) located above the guide plate (107) is fixedly connected to a propeller. A reflux assembly (300), wherein the reflux assembly (300) is fixedly connected to the interior of the kettle body (101), and the stirring shaft (204) and the propulsion paddle at the bottom end thereof are both located inside the reflux assembly (300); A dispersion assembly (400), wherein the dispersion assembly (400) is fixedly connected to the interior of the kettle cover (201), a dispersion paddle (406) is provided at the bottom of the dispersion assembly (400), and the dispersion paddle (406) is arranged above the reflux assembly (300); The scraping assembly (500) is fixedly connected to the surface of the stirring shaft (204), and the scraping assembly (500) is correspondingly arranged between the reflux assembly (300) and the dispersion assembly (400), and a stirring mechanism is provided on the scraping assembly (500).

2. The in-situ pyrolysis product extraction reactor for oil-rich coal with separation function according to claim 1, characterized in that: The top and bottom of the kettle body (101) are fixedly connected to the upper partition (103) and the lower partition (104) respectively. The upper partition (103) and the lower partition (104) are respectively located on both sides of the shell (102). The upper partition (103) is fixedly connected to the lower partition (104) through a plurality of evenly distributed vertical rods (105). The plurality of vertical rods (105) are evenly distributed to the outside of the shell (102). A cavity for installing an electric heating rod is formed inside the shell (102). The lower partition (104) is fixedly connected to the support legs (106).

3. The in-situ pyrolysis product extraction reactor for oil-rich coal with separation function according to claim 2, characterized in that: The bottom of the kettle body (101) is fixedly connected to a discharge pipe (108), and the end of the discharge pipe (108) is fixedly connected to a valve. The discharge pipe (108) is located above a guide plate (107), and the guide plate (107) is arranged below a reflux assembly (300). A gap for transporting reactants is provided between the guide plate (107) and the reflux assembly (300). A spoiler (206) is provided between the discharge pipe (108) and the guide plate (107), and the spoiler (206) is located between the vertical rods.

4. The in-situ pyrolysis product extraction reactor for oil-rich coal with separation function according to claim 1, characterized in that: The edge of the kettle cover (201) is fixedly connected to the top edge of the kettle body (101) via a plurality of screws (202); a driving motor (203) is fixedly mounted on the top of the kettle cover (201); an output end of the driving motor (203) is fixedly connected to a stirring shaft (204); the stirring shaft (204) is connected via a coupling (207); the coupling (207) is located below the dispersion assembly (400); a feed pipe (208) is fixedly connected to the top of the kettle cover (201) on one side of the driving motor (203).

5. The in-situ pyrolysis product extraction reactor for oil-rich coal with separation function according to claim 1, characterized in that: The reflux assembly (300) is composed of an annular enclosure (301), the bottom edge of the enclosure (301) is fixedly connected to the bottom of the kettle body (101) through a plurality of support rods (303), the top edge of the enclosure (301) is provided with bevel teeth (302), the enclosure (301) is arranged above the guide plate (107), and a stirring shaft (204) and a propeller are provided inside the enclosure (301), the propeller is a conical blade structure, and the outer diameter of the propeller is smaller than the inner diameter of the enclosure (301).

6. The in-situ pyrolysis product extraction reactor for oil-rich coal with separation function according to claim 1, characterized in that: The dispersion assembly (400) is composed of a cross bar (401) and a limiting shaft (402), one end of the cross bar (401) is fixedly connected to the inner wall of the kettle cover (201), the number of cross bars (401) is several, and the other ends of the several cross bars (401) are fixedly connected to the limiting shaft (402), the stirring shaft (204) is rotatably connected to the inside of the limiting shaft (402), the bottom end of the limiting shaft (402) is rotatably connected to the transmission gear (403), and the stirring shaft ( Another transmission gear (403) is fixedly connected to the agitator shaft (204), the two transmission gears (403) are meshed with each other, and the transmission gear (403) is located between the limiting shaft (402) and the turntable (404), and the turntable (404) is movably sleeved on the surface of the agitator shaft (204) located below the transmission gear (403), the edge of the turntable (404) is fixedly connected to the gear ring (405), and the inner wall of the gear ring (405) is meshed with the transmission gear (403).

7. The in-situ pyrolysis product extraction reactor for oil-rich coal with separation function according to claim 6, characterized in that: The turntable (404) is rotatably connected to the surface of the stirring shaft (204), and the turntable (404) is located above the coupling (207). A plurality of evenly distributed dispersion paddles (406) are fixedly connected to the bottom edge of the turntable (404), and each dispersion paddle (406) is arranged above the enclosure (301).

8. The in-situ pyrolysis product extraction reactor for oil-rich coal with separation function according to claim 1, characterized in that: The wall scraping assembly (500) is composed of a fixed rod (501) and an annular rod (502). The fixed rod (501) is fixedly connected to the surface of the stirring shaft (204). The fixed rod (501) is composed of a plurality of evenly distributed rod bodies. The distal ends of adjacent rod bodies are fixedly connected to the annular rod (502). The end of each rod body is fixedly connected to the scraping mechanism. The fixed rod (501) is located above the enclosure (301), and the annular rod (502) is located outside the enclosure (301).

9. The in-situ pyrolysis product extraction reactor for oil-rich coal with separation function according to claim 8, characterized in that: The scraping assembly consists of a connecting rod (503) and a scraper (504), the top of the connecting rod (503) is fixedly connected to the fixed rod (501), the side wall of the connecting rod (503) is fixedly connected to the scraper (504), the connecting rod (503) and the scraper (504) are both arc-shaped structures, and the scraper (504) is closely connected to the inner wall of the kettle body (101), the bottom end of the connecting rod (503) is fixedly connected to the fixed rod (501) through an inclined stabilizing rod (505), and the bottom ends of two adjacent connecting rods (503) are fixedly connected to the reinforcing rod (506) of the annular structure.

10. The in-situ pyrolysis product extraction reactor for oil-rich coal with separation function according to claim 1, characterized in that: The stirring mechanism is located between the fixed rods (501) and is composed of a bevel gear (507) and a stirring paddle (508). The bevel gear (507) and the stirring paddle (508) are respectively arranged on the inner and outer sides of the annular rod (502). The bevel gear (507) is fixedly connected to one end of the stirring paddle (508), and the stirring paddle (508) is rotatably connected to the inside of the annular rod (502). The bevel gear (507) is meshed with the helical teeth (302). The stirring paddle (508) is a bent structure, and the stirring paddle (508) is located outside the enclosure.

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