Oil shale kerogen extraction device and method

Abstract

The present invention belongs to the technical field of kerogen extraction, and in particular, to an oil shale kerogen extraction device and method. In view of the fact that coking may be generated during pyrolysis, which adversely affects pyrolysis, and that coke easily covers the surface of the material, hindering heat conduction and volatile release, and affecting the separation of volatile components during kerogen extraction, the following solution is proposed, including: a base platform provided with a support frame. The oil shale kerogen extraction device and method disclosed in the present invention can effectively break up coke and promote the release of volatiles, thereby improving the separation efficiency of pyrolysis products. The device is suitable for the pyrolysis treatment of carbon-containing materials such as oil shale and kerogen. During the pyrolysis of kerogen, the device can release kerogen covered by coke, thereby reducing the adverse effects of coking on heat conduction and volatile release, and improving the separation of volatile components during kerogen extraction.

Description

Technical Field

[0001] The present invention relates to the technical field of kerogen extraction, and in particular to an oil shale kerogen extraction device and method. Background Art

[0002] Kerogen is dispersed organic matter in sedimentary rocks that is insoluble in alkali, non-oxidizing acids and organic solvents. It is a condensation polymer formed under appropriate temperature and pressure and accounts for about 90% of the organic matter in sedimentary rocks.

[0003] Kerogen is considered the primary source of oil. Kerogen is generally divided into three categories based on its biological origin. The first category is sapropelic organic matter, the highest quality organic matter, known as Type I kerogen, primarily derived from aquatic plankton and plants. The second category is humic organic matter, a lower quality organic matter, known as Type III kerogen, primarily derived from higher plants. The third category is a mixed type of organic matter between Types I and II.

[0004] In the pyrolysis process of carbon-containing materials such as oil shale and kerogen, the separation of coke and volatile matter is a key step. Coking may be produced during the pyrolysis process, which will have an adverse effect on the pyrolysis. At the same time, since coke easily covers the surface of the material, it will hinder heat conduction and volatile release, and affect the separation effect of volatile components during kerogen extraction, resulting in a decrease in shale oil yield, thereby affecting the kerogen extraction effect. Summary of the Invention

[0005] The present invention discloses an oil shale kerogen extraction device and method, which aims to solve the technical problems in the background technology that coking may be generated during the pyrolysis process, which has an adverse effect on the pyrolysis. At the same time, since coke easily covers the surface of the material, it will hinder heat conduction and volatile matter release, and affect the separation effect of volatile components during kerogen extraction.

[0006] The present invention provides an oil shale kerogen extraction device, comprising:

[0007] A base platform, wherein a support frame is provided on the base platform, and an extraction chamber is provided on the inner wall of the support frame, and the extraction chamber is used for heating and pyrolyzing the kerogen;

[0008] A fixed sleeve frame is arranged at the bottom end of the extraction chamber;

[0009] A discharge pipe is provided on the outer wall of the fixed sleeve frame;

[0010] Product separation tube, which is located at the top of the extraction chamber and is used to separate and collect volatile components (such as shale oil and combustible gas);

[0011] A heating electric furnace wire is provided on the extraction chamber and is located inside the extraction chamber;

[0012] A condensing device is provided at one end of the product separation tube, and an oil-water vapor separation tube is provided at one end of the condensing device for condensing and separating the oil and water vapor;

[0013] An extraction and release unit is located inside the extraction chamber and is used to break up the coke and promote the release of volatiles, thereby increasing the separation effect of volatile components during kerogen extraction, thereby increasing the extraction effect of kerogen;

[0014] The extraction preheating module is located on the product separation tube and the extraction chamber. The extraction preheating module is used to utilize the product heat energy to preheat and dry the extraction raw materials.

[0015] In a preferred embodiment, the extraction and release unit comprises:

[0016] The fixed ring frame is arranged on the inner wall of the extraction bin, the inner wall of the fixed ring frame is fixedly connected with a fixed grinding disc, the inner wall of the fixed grinding disc is fixedly connected with a fixed pipe frame, and a plurality of feed ports are opened at the bottom end of the fixed pipe frame.

[0017] In a preferred embodiment, the extraction and release unit further comprises:

[0018] A mounting plate is provided on the inner wall of the fixed pipe rack, a servo motor is fixedly connected to the top of the mounting plate, and an output shaft of the servo motor is connected to the mounting frame via a coupling;

[0019] A lifting cylinder is fixedly connected to the inner wall of the mounting frame, an output end of the lifting cylinder is fixedly connected to a lifting frame, and three fixed guide rods are equidistantly arranged on the bottom end of the lifting frame.

[0020] In a preferred embodiment, the extraction and release unit further comprises:

[0021] The movable upper roller is arranged on the outer wall of the fixed pipe rack and is located above the fixed roller disc. When in use, the movable upper roller and the fixed roller disc cooperate to crush the coke blocks to release the kerogen.

[0022] Three pressure sleeves, the three pressure sleeves are respectively arranged on the outer walls of the three fixed guide rods, the bottom ends of the three pressure sleeves are fixedly connected to the top of the movable upper roller, the bottom ends of the three fixed guide rods are fixedly connected to pressure springs, and the bottom ends of the three pressure springs are respectively fixedly connected to the bottom inner walls of the three pressure sleeves;

[0023] Multiple discharge ports are equidistantly arranged on the outer wall of the fixed pipe rack;

[0024] A fixed support ring, the fixed support ring is fixedly connected to the inner wall of the fixed sleeve frame, the bottom of the fixed support ring is fixedly connected to a drive motor, the output shaft of the drive motor is connected to a rotating ring frame through a coupling, and the rotating ring frame is arranged inside the extraction bin;

[0025] The connecting plate frame is fixedly connected to the outer wall of the rotating ring frame.

[0026] In a preferred embodiment, the extraction and release unit further comprises:

[0027] A spiral rod is provided on the top of the rotating ring frame and is located inside the fixed pipe rack. The spiral rod is used to lift the coke block;

[0028] The annular rail is arranged at the bottom of the fixed rolling disc, and an isolation ring is movably connected to the annular rail. A plurality of mounting rods are equidistantly arranged around the bottom of the isolation ring and the top of the connecting plate frame.

[0029] In a preferred embodiment, the extraction and release unit further comprises:

[0030] A gear ring is provided on an inner wall of one side of the annular rail, and the top ends of the plurality of mounting rods are fixedly connected to drive gears, the plurality of drive gears are located inside the annular rail, and the plurality of drive gears are meshed with the gear ring;

[0031] A plurality of stirring frames are respectively arranged on the outer walls of the plurality of mounting rods, the plurality of stirring frames are all located outside the fixed pipe rack, and the plurality of stirring frames are all fixedly connected to two stirring baffles.

[0032] In a preferred solution, an electric push rod is fixedly connected to the base platform, the electric push rod is located inside the fixed sleeve frame, the output end of the electric push rod is fixedly connected to a fixed plate, the top circumference of the fixed plate is fixedly connected to four blocking parts, and the four blocking parts are movably connected to the fixed sleeve frame, the outer walls of the four blocking parts are in contact with the inner wall of the fixed support ring, and the drive motor is located between the four blocking parts.

[0033] In a preferred embodiment, the extraction and preheating module includes:

[0034] The push tube warehouse is arranged on the extraction warehouse, and the outer wall of the push tube warehouse is fixedly connected with a feed pipe, which is used to transport the extraction raw materials;

[0035] A heat storage chamber is provided on the outer wall of the product separation tube, a heat pipe and a return pipe are provided on the heat storage chamber, and a circulation pump is provided on the outer wall of the return pipe;

[0036] The preheating tube ring is arranged at the output end of the heat pipe and the input end of the return pipe, and the preheating tube ring is located outside the push tube warehouse.

[0037] In a preferred embodiment, the extraction and preheating module further comprises:

[0038] The preheating chamber is fixedly connected to the outer wall of the push tube chamber, the preheating tube ring is located inside the preheating chamber, and the outer wall of the push tube chamber is provided with multiple groups of heat conduction holes;

[0039] The telescopic oil cylinder is arranged on the pushing tube warehouse, and the output end of the telescopic oil cylinder is fixedly connected to the pushing member, and the outer wall of the pushing member is in contact with the inner wall of the pushing tube warehouse.

[0040] A method for extracting oil shale kerogen, using the oil shale kerogen extraction device described above, comprises the following steps:

[0041] Step 1: The raw materials for extraction are transported to the interior of the push tube bin through the feed pipe, and the push piece is driven to move by the telescopic oil cylinder to transport the raw materials for extraction to the interior of the extraction bin;

[0042] Step 2: During extraction and separation, the heating electric furnace wire is activated to heat the extraction chamber to pyrolyze the kerogen. As the extraction proceeds, the extraction release unit operates to process the coke blocks generated during the extraction process, effectively breaking up the coke and promoting the release of volatiles, thereby improving the separation efficiency of the pyrolysis products until the extraction is completed.

[0043] Step 3: After extraction, the high-temperature oil-gas mixture is transported out through the product separation pipe, and the oil and water vapor are condensed and separated through the condensation device and the oil-water vapor separation pipe. At the same time, the electric push rod drives the fixed plate and the sealing part to descend, so that the residue is discharged through the discharge pipe;

[0044] Step 4: When the high-temperature oil-gas mixture passes through the product separation tube, the heat storage chamber can absorb its heat and store it. During the subsequent feed extraction operation, the extraction preheating module runs and preheats and dries the raw materials entering the push tube warehouse.

[0045] The beneficial effects of the present invention are: as can be seen from the above, the oil shale kerogen extraction device provided by the present invention can effectively crush coke and promote the release of volatile matter, improve the separation efficiency of pyrolysis products, and is suitable for the pyrolysis treatment of carbon-containing materials such as oil shale and kerogen. When pyrolysis of kerogen is carried out, the device can release the kerogen covered by coke, thereby reducing the adverse effects of coking on heat conduction and volatile matter release, and improving the separation effect of volatile components during kerogen extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a schematic diagram of the overall structure of an oil shale kerogen extraction device proposed in the present invention;

[0047] Figure 2This is a schematic diagram of the internal structure of an extraction chamber of an oil shale kerogen extraction device proposed in the present invention;

[0048] Figure 3 This is a schematic diagram of the structure of an extraction and release unit of an oil shale kerogen extraction device proposed in the present invention;

[0049] Figure 4 This is a schematic diagram of the combined structure of a fixed pipe rack and a lifting cylinder of an oil shale kerogen extraction device proposed by the present invention;

[0050] Figure 5 This is a schematic diagram of the combined structure of a fixed guide rod and a pressure spring of an oil shale kerogen extraction device proposed by the present invention;

[0051] Figure 6 This is a schematic diagram of the combined structure of a spiral rod and a connecting plate frame of an oil shale kerogen extraction device proposed by the present invention;

[0052] Figure 7 This is a schematic diagram of the combined structure of a rotating ring frame and a fixed support ring of an oil shale kerogen extraction device proposed by the present invention;

[0053] Figure 8 The present invention proposes Figure 7 A schematic diagram of the enlarged structure of part A;

[0054] Figure 9 This is a schematic diagram of the combined structure of a plugging member and an electric push rod of an oil shale kerogen extraction device proposed by the present invention;

[0055] Figure 10 This is a schematic diagram of the extraction and preheating module structure of an oil shale kerogen extraction device proposed in the present invention;

[0056] Figure 11 This is a schematic cross-sectional view of the preheating chamber and the pushing pipe chamber of an oil shale kerogen extraction device proposed in the present invention;

[0057] Figure 12 This is a schematic diagram of the combined structure of a condensing device and an oil-water vapor separation tube of an oil shale kerogen extraction device proposed in the present invention.

[0058] Figure: 1, base; 2, support frame; 3, extraction preheating module; 301, heat storage chamber; 302, heat pipe; 303, preheating chamber; 304, push pipe chamber; 305, feed pipe; 306, circulation pump; 307, return pipe; 308, preheating pipe ring; 309, heat conduction hole; 310, push piece; 311, telescopic cylinder; 4, product separation tube; 5, extraction chamber; 6, fixed sleeve frame; 7, discharge pipe; 8, extraction release unit; 801, stirring frame; 802, fixed ring frame; 803, fixed grinding plate; 804, fixed guide rod; 805, lifting frame; 806, movable upper grinding plate; 807, drive motor; 8 08. Feed port; 809. Fixed pipe rack; 810. Lifting cylinder; 811. Discharge port; 812. Mounting frame; 813. Servo motor; 814. Mounting plate; 815. Pressure spring; 816. Ring rail; 817. Isolation ring; 818. Agitation baffle; 819. Connecting plate frame; 820. Screw rod; 821. Mounting rod; 822. Rotating ring frame; 823. Fixed support ring; 824. Gear ring; 825. Drive gear; 826. Pressure sleeve frame; 9. Electric push rod; 10. Fixed plate; 11. Sealing piece; 12. Heating electric furnace wire; 13. Condensation device; 14. Oil-water vapor separation pipe. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0060] The oil shale kerogen extraction device disclosed in the present invention is mainly used in scenarios where coking may be generated during the pyrolysis process, which has an adverse effect on the pyrolysis. At the same time, since coke easily covers the surface of the material, it will hinder heat conduction and volatile matter release, and affect the separation effect of volatile components during kerogen extraction.

[0061] Reference Figures 1-12 , an oil shale kerogen extraction device, comprising:

[0062] A base platform 1 is provided with a support frame 2 on the base platform 1, and an extraction chamber 5 is provided on the inner wall of the support frame 2, and the extraction chamber 5 is used for heating and pyrolyzing the kerogen;

[0063] A fixed sleeve frame 6 is provided at the bottom end of the extraction chamber 5;

[0064] A discharge pipe 7 is provided on the outer wall of the fixed sleeve frame 6;

[0065] The product separation pipe 4 is provided at the top of the extraction chamber 5 and is used to separate and collect volatile components (such as shale oil and combustible gas);

[0066] The heating electric furnace wire 12 is provided on the extraction chamber 5 and is located inside the extraction chamber 5;

[0067] A condensing device 13 is provided at one end of the product separation pipe 4. An oil-water vapor separation pipe 14 is provided at one end of the condensing device 13 for condensing and separating the oil and water vapor;

[0068] The extraction and release unit 8 is located inside the extraction chamber 5. The extraction and release unit 8 is used to break up the coke and promote the release of volatiles, thereby increasing the separation effect of the volatile components during kerogen extraction, thereby increasing the extraction effect of the kerogen;

[0069] The extraction preheating module 3 is located on the product separation tube 4 and the extraction chamber 5. The extraction preheating module 3 is used to utilize the product heat energy to preheat and dry the extraction raw materials.

[0070] The extraction and release unit 8 can process the coke blocks produced during the pyrolysis process, thereby releasing the kerogen that has not been completely pyrolyzed, increasing the separation effect of volatile components during kerogen extraction, and thereby reducing the adverse effects of coking on heat conduction and volatile release. At the same time, it can increase the heating uniformity of the device while solving the coking problem and reduce the generation of coke.

[0071] Reference Figure 2-Figure 8 In a preferred embodiment, the extraction and release unit 8 includes:

[0072] The fixed ring frame 802 is arranged on the inner wall of the extraction chamber 5. The inner wall of the fixed ring frame 802 is fixedly connected with a fixed grinding plate 803. The inner wall of the fixed grinding plate 803 is fixedly connected with a fixed pipe frame 809. The bottom end of the fixed pipe frame 809 is provided with multiple feed ports 808.

[0073] In the present invention, the extraction and release unit 8 further comprises:

[0074] A mounting plate 814 is provided on the inner wall of the fixed pipe frame 809. A servo motor 813 is fixedly connected to the top of the mounting plate 814. The output shaft of the servo motor 813 is connected to the mounting frame 812 via a coupling.

[0075] The lifting cylinder 810 is fixedly connected to the inner wall of the mounting frame 812 , and the output end of the lifting cylinder 810 is fixedly connected to the lifting frame 805 , and three fixed guide rods 804 are equidistantly arranged on the bottom end of the lifting frame 805 .

[0076] In the present invention, the extraction and release unit 8 further comprises:

[0077] The movable upper roller 806 is arranged on the outer wall of the fixed pipe rack 809 and is located above the fixed roller plate 803. The movable upper roller 806 and the fixed roller plate 803 cooperate to crush the coke blocks when in use.

[0078] Three pressure sleeves 826 are respectively arranged on the outer walls of the three fixed guide rods 804. The bottom ends of the three pressure sleeves 826 are fixedly connected to the top of the movable upper roller 806. The bottom ends of the three fixed guide rods 804 are fixedly connected to pressure springs 815. The bottom ends of the three pressure springs 815 are respectively fixedly connected to the bottom inner walls of the three pressure sleeves 826.

[0079] Multiple discharge ports 811 are equidistantly arranged on the outer wall of the fixed pipe rack 809;

[0080] The fixed support ring 823 is fixedly connected to the inner wall of the fixed sleeve frame 6. The bottom of the fixed support ring 823 is fixedly connected to the drive motor 807. The output shaft of the drive motor 807 is connected to the rotating ring frame 822 through a coupling. The rotating ring frame 822 is arranged inside the extraction chamber 5;

[0081] The connecting plate frame 819 is fixedly connected to the outer wall of the rotating ring frame 822.

[0082] In the present invention, the extraction and release unit 8 further comprises:

[0083] The screw rod 820 is provided on the top of the rotating ring frame 822 and is located inside the fixed pipe frame 809. The screw rod 820 is used to lift the coke block;

[0084] The annular rail 816 is arranged at the bottom of the fixed grinding disc 803, and an isolation ring 817 is movably connected to the annular rail 816. A plurality of mounting rods 821 are equidistantly arranged around the bottom of the isolation ring 817 and the top of the connecting plate frame 819.

[0085] In the present invention, the extraction and release unit 8 further comprises:

[0086] Gear ring 824, which is disposed on one inner wall of the annular rail 816. The top ends of the plurality of mounting rods 821 are fixedly connected to drive gears 825. The plurality of drive gears 825 are located inside the annular rail 816 and mesh with the gear ring 824.

[0087] Multiple stirring frames 801 are respectively arranged on the outer walls of multiple mounting rods 821 . Multiple stirring frames 801 are all located outside the fixed pipe rack 809 . Two stirring partitions 818 are fixedly connected to the multiple stirring frames 801 .

[0088] Specifically, when coking occurs, the drive motor 807 runs, and the drive motor 807 drives the rotating ring frame 822, the connecting plate frame 819 and the screw rod 820 to rotate. The screw rod 820 can transport the raw materials and the coking blocks produced therein when rotating, so that the coking blocks rise. As the coking blocks rise, the lifting cylinder 810 runs, so that the lifting frame 805, the fixed guide rod 804, the pressure sleeve frame 826 and the movable upper roller 806 rise, and the coking blocks can be discharged through the discharge port 811, so that the coking blocks fall on the fixed roller plate 803, and then the lifting cylinder 810 resets, so that the movable upper roller 806 descends, and cooperates with the pressure spring 815 to make the movable upper roller 806 applies a certain pressure to the fixed grinding plate 803, and then starts the servo motor 813, which drives the movable upper roller 806 to rotate to crush the coke block. At this time, the coke block is broken, so that the kerogen inside it is exposed and released, thereby increasing the separation effect of the volatile components during kerogen extraction. At the same time, the connecting plate frame 819 can drive the installation rod 821 and the isolation ring 817 to move when rotating. Since the driving gear 825 is engaged with the gear ring 824, the installation rod 821 can be rotated, thereby driving the stirring frame 801 and the stirring partition 818 to rotate, so as to turn and stir the extraction raw materials;

[0089] In a specific application scenario, the extraction and release unit 8 is suitable for the kerogen extraction link, that is, the extraction and release unit 8 can process the coke blocks produced during the pyrolysis process when in use, so that the kerogen covered by coke can be released, and the separation effect of volatile components during kerogen extraction is improved, thereby reducing the adverse effects of coking on heat conduction and volatile release. At the same time, in the process of crushing the coke blocks, the device can also drive the stirring frame 801 and the stirring baffle 818 to rotate through the connecting plate frame 819, so that the stirring frame 801 and the stirring baffle 818 turn over and stir the extracted raw materials, so that the raw materials located in the center can frequently change their positions with the raw materials at the edge, thereby increasing the heating effect of the raw materials during extraction, reducing the coke generation rate while increasing the heating uniformity, and further improving the separation effect of volatile components in the kerogen during the stirring process, further increasing the kerogen extraction efficiency of the device, and improving the use effect of the device.

[0090] Reference Figure 2 and Figure 9In a preferred embodiment, an electric push rod 9 is fixedly connected to the base platform 1, and the electric push rod 9 is located inside the fixed sleeve frame 6. The output end of the electric push rod 9 is fixedly connected to a fixed plate 10, and four blocking members 11 are fixedly connected to the top circumference of the fixed plate 10. The four blocking members 11 are all movably connected to the fixed sleeve frame 6, and the outer walls of the four blocking members 11 are in contact with the inner wall of the fixed support ring 823. The drive motor 807 is located between the four blocking members 11.

[0091] Reference Figure 1 、 Figure 2 、 Figure 10 and Figure 11 In a preferred embodiment, the extraction and preheating module 3 includes:

[0092] Pushing tube warehouse 304, the pushing tube warehouse 304 is arranged on the extraction warehouse 5, and the outer wall of the pushing tube warehouse 304 is fixedly connected with a feeding pipe 305, which is used to transport the extraction raw materials;

[0093] The heat storage chamber 301 is provided on the outer wall of the product separation tube 4. The heat storage chamber 301 is provided with a heat pipe 302 and a return pipe 307. The outer wall of the return pipe 307 is provided with a circulation pump 306.

[0094] The preheating tube ring 308 is arranged at the output end of the heat pipe 302 and the input end of the return pipe 307 , and the preheating tube ring 308 is located outside the pushing tube warehouse 304 .

[0095] In the present invention, the extraction and preheating module 3 further includes:

[0096] The preheating chamber 303 is fixedly connected to the outer wall of the push tube chamber 304. The preheating tube ring 308 is located inside the preheating chamber 303. The outer wall of the push tube chamber 304 is provided with multiple groups of heat conducting holes 309.

[0097] The telescopic oil cylinder 311 is arranged on the pushing tube warehouse 304 , and the output end of the telescopic oil cylinder 311 is fixedly connected to the pushing member 310 , and the outer wall of the pushing member 310 contacts the inner wall of the pushing tube warehouse 304 .

[0098] Specifically, when the raw materials for extraction enter the push tube bin 304, the telescopic oil cylinder 311 drives the push member 310 to move, so as to transport the raw materials for extraction into the extraction bin 5, thereby completing the loading.

[0099] The heat storage chamber 301 absorbs the heat of the high-temperature oil-gas mixture and stores it. During the subsequent feeding and extraction operation, the telescopic oil cylinder 311 operates again to drive the pushing member 310 to move, so that the extracted raw materials move inside the pushing tube bin 304. During the movement, the circulating pump 306 operates, allowing the heat storage medium to enter the preheating tube ring 308 through the heat pipe 302, and release the heat into the preheating bin 303 through the preheating tube ring 308. At this time, the heat can be further transferred to the pushing tube bin 304 through the heat conduction hole 309 to preheat and dry the raw materials.

[0100] In a specific application scenario, the extraction preheating module 3 is suitable for the continuous extraction operation of kerogen, that is, when the high-temperature oil and gas mixture passes through the product separation tube 4, its heat can be absorbed and stored through the extraction preheating module 3. When the kerogen is continuously extracted, the extraction preheating module 3 can utilize the waste heat of the extracted product, so that the device can use the waste heat to preheat and dry the subsequent feed raw materials (this drying step is auxiliary secondary drying), ensuring the dryness of the raw materials, thereby reducing subsequent energy consumption, and increasing the resource recycling effect of the device.

[0101] A method for extracting oil shale kerogen, using the oil shale kerogen extraction device described above, comprises the following steps:

[0102] Step 1: The raw materials for extraction are delivered to the interior of the push tube bin 304 through the feed pipe 305, and the pusher 310 is driven to move by the telescopic cylinder 311 to deliver the raw materials for extraction to the interior of the extraction bin 5;

[0103] Step 2: During extraction and separation, the heating electric furnace wire 12 is activated to heat the extraction chamber 5 to perform pyrolysis on the kerogen. As the extraction proceeds, when coking occurs, the drive motor 807 starts to operate, and the drive motor 807 drives the rotating ring frame 822, the connecting plate frame 819 and the screw rod 820 to rotate. The screw rod 820 can transport the raw materials and the coking blocks produced therein while rotating, so that the coking blocks rise. As the coking blocks rise, the lifting cylinder 810 starts to operate, so that the lifting frame 805, the fixed guide rod 804, the pressure sleeve frame 826 and the movable upper roller 806 rise, and the coking blocks can be discharged through the discharge port 811, so that the coking blocks fall on the fixed roller plate 803, and then the lifting cylinder 810 resets, so that the movable upper roller 806 descends, and the movable upper roller 806 is equipped with a plurality of rollers. The pressure spring 815 is closed so that the movable upper roller 806 applies a certain pressure to the fixed roller disc 803, and then the servo motor 813 is started, which drives the movable upper roller 806 to rotate to crush the coke block. At this time, the coke block is broken, so that the kerogen inside it is exposed and released, thereby increasing the separation effect of the volatile components during the kerogen extraction until the extraction is completed. At the same time, during the extraction process, the connecting plate frame 819 can drive the installation rod 821 and the isolation ring 817 to move when rotating. Since the driving gear 825 is engaged with the gear ring 824, the installation rod 821 can be rotated, thereby driving the stirring frame 801 and the stirring partition 818 to rotate, so as to turn and stir the extraction raw materials;

[0104] Step 3: After extraction, the high-temperature oil-gas mixture is transported out through the product separation pipe 4, and the oil and water vapor are condensed and separated through the condensation device 13 and the oil-water vapor separation pipe 14. At the same time, the electric push rod 9 drives the fixed plate 10 and the blocking member 11 to descend, so that the residue is discharged through the discharge pipe 7;

[0105] Step 4. When the high-temperature oil-gas mixture passes through the product separation tube 4, the heat storage chamber 301 can absorb its heat and store it. During the subsequent feeding and extraction operation, the telescopic oil cylinder 311 operates again to drive the pushing member 310 to move, so that the extracted raw materials move inside the pushing tube warehouse 304. During the movement, the circulating pump 306 operates, so that the heat storage medium enters the preheating tube ring 308 through the heat pipe 302, and releases the heat to the preheating chamber 303 through the preheating tube ring 308. At this time, the heat can be further transferred to the inside of the pushing tube warehouse 304 through the heat conduction hole 309 to preheat and dry the raw materials.

[0106] 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. An oil shale kerogen extraction device, characterized in that: include: A base platform, wherein a support frame is provided on the base platform, and an extraction chamber is provided on the inner wall of the support frame, and the extraction chamber is used for heating and pyrolyzing the kerogen; A fixed sleeve frame is arranged at the bottom end of the extraction chamber; A discharge pipe is provided on the outer wall of the fixed sleeve frame; A product separation tube is provided at the top of the extraction chamber; A heating electric furnace wire is provided on the extraction chamber and is located inside the extraction chamber; A condensing device is provided at one end of the product separation tube, and an oil-water vapor separation tube is provided at one end of the condensing device; An extraction and release unit, located inside the extraction bin, for crushing coke and promoting the release of volatile matter; An extraction and preheating module is located between the product separation tube and the extraction chamber, and is used to utilize the product heat energy; The extraction and release unit comprises: A fixed ring frame is arranged on the inner wall of the extraction bin, the inner wall of the fixed ring frame is fixedly connected with a fixed grinding disc, the inner wall of the fixed grinding disc is fixedly connected with a fixed pipe frame, and a plurality of feed ports are opened at the bottom end of the fixed pipe frame; The extraction and release unit further comprises: A mounting plate is provided on the inner wall of the fixed pipe rack, a servo motor is fixedly connected to the top of the mounting plate, and an output shaft of the servo motor is connected to the mounting frame via a coupling; A lifting cylinder, the lifting cylinder is fixedly connected to the inner wall of the mounting frame, the output end of the lifting cylinder is fixedly connected to the lifting frame, and three fixed guide rods are equidistantly arranged on the bottom end of the lifting frame; The extraction and release unit further comprises: The movable upper roller is arranged on the outer wall of the fixed pipe rack and is located above the fixed roller plate. The movable upper roller and the fixed roller plate cooperate to crush the coke blocks when in use. Three pressure sleeves, the three pressure sleeves are respectively arranged on the outer walls of the three fixed guide rods, the bottom ends of the three pressure sleeves are fixedly connected to the top of the movable upper roller, the bottom ends of the three fixed guide rods are fixedly connected to pressure springs, and the bottom ends of the three pressure springs are respectively fixedly connected to the bottom inner walls of the three pressure sleeves; Multiple discharge ports are equidistantly arranged on the outer wall of the fixed pipe rack; A fixed support ring, the fixed support ring is fixedly connected to the inner wall of the fixed sleeve frame, the bottom of the fixed support ring is fixedly connected to a drive motor, the output shaft of the drive motor is connected to a rotating ring frame through a coupling, and the rotating ring frame is arranged inside the extraction bin; A connecting plate frame, the connecting plate frame is fixedly connected to the outer wall of the rotating ring frame; The extraction and release unit further comprises: A spiral rod is provided on the top of the rotating ring frame and is located inside the fixed pipe rack. The spiral rod is used to lift the coke block; The annular rail is arranged at the bottom of the fixed rolling disc, and an isolation ring is movably connected to the annular rail. A plurality of mounting rods are equidistantly arranged around the bottom of the isolation ring and the top of the connecting plate frame.

2. The oil shale kerogen extraction device according to claim 1, characterized in that: The extraction and release unit further comprises: A gear ring is provided on an inner wall of one side of the annular rail, and the top ends of the plurality of mounting rods are fixedly connected to drive gears, the plurality of drive gears are located inside the annular rail, and the plurality of drive gears are meshed with the gear ring; A plurality of stirring frames are respectively arranged on the outer walls of the plurality of mounting rods, the plurality of stirring frames are all located outside the fixed pipe rack, and the plurality of stirring frames are all fixedly connected to two stirring baffles.

3. The oil shale kerogen extraction device according to claim 2, characterized in that: An electric push rod is fixedly connected to the base platform, and the electric push rod is located inside the fixed sleeve frame. The output end of the electric push rod is fixedly connected to a fixed plate. Four blocking pieces are fixedly connected to the top circumference of the fixed plate, and the four blocking pieces are movably connected to the fixed sleeve frame. The outer walls of the four blocking pieces are in contact with the inner wall of the fixed support ring, and the drive motor is located between the four blocking pieces.

4. The oil shale kerogen extraction device according to claim 3, characterized in that: The extraction and preheating module comprises: The push tube warehouse is arranged on the extraction warehouse, and the outer wall of the push tube warehouse is fixedly connected with a feed pipe, which is used to transport the extraction raw materials; A heat storage chamber is provided on the outer wall of the product separation tube, a heat pipe and a return pipe are provided on the heat storage chamber, and a circulation pump is provided on the outer wall of the return pipe; The preheating tube ring is arranged at the output end of the heat pipe and the input end of the return pipe, and the preheating tube ring is located outside the push tube warehouse.

5. The oil shale kerogen extraction device according to claim 4, characterized in that: The extraction and preheating module also includes: The preheating chamber is fixedly connected to the outer wall of the push tube chamber, the preheating tube ring is located inside the preheating chamber, and the outer wall of the push tube chamber is provided with multiple groups of heat conduction holes; The telescopic oil cylinder is arranged on the pushing tube warehouse, and the output end of the telescopic oil cylinder is fixedly connected to the pushing member, and the outer wall of the pushing member is in contact with the inner wall of the pushing tube warehouse.

6. A method for extracting oil shale kerogen, using the oil shale kerogen extraction device according to claim 5, characterized in that: The steps include: Step 1: The raw materials for extraction are transported to the interior of the push tube bin through the feed pipe, and the push piece is driven to move by the telescopic oil cylinder to transport the raw materials for extraction to the interior of the extraction bin; Step 2: During extraction and separation, the heating electric furnace wire is activated to heat the extraction chamber to pyrolyze the kerogen. As the extraction proceeds, the extraction and release unit operates to process the coke blocks generated during the extraction process and improve the separation efficiency of the pyrolysis products until the extraction is completed; Step 3: After extraction, the high-temperature oil-gas mixture is transported out through the product separation pipe, and the oil and water vapor are condensed and separated through the condensation device and the oil-water vapor separation pipe. At the same time, the electric push rod drives the fixed plate and the sealing part to descend, so that the residue is discharged through the discharge pipe; Step 4: When the high-temperature oil-gas mixture passes through the product separation tube, the heat storage chamber can absorb its heat and store it. During the subsequent feed extraction operation, the extraction preheating module runs and preheats and dries the raw materials entering the push tube warehouse.

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