Petroleum fracturing flowback solid waste pyrohydrolysis device

Abstract

The invention discloses a petroleum fracturing flowback solid waste thermal hydrolysis device which comprises a treatment cylinder, and a supporting frame is mounted at the lower end of the treatment cylinder; the stirring mechanism comprises a driving motor mounted at the upper end of the treatment barrel, an output shaft of the driving motor extends into the treatment barrel and is fixedly connected with a rotating shaft, a thread layer is arranged on the rotating shaft, the thread layer is a reciprocating thread, and a lifting plate is in threaded connection with the thread layer; the inner top of the treatment cylinder is fixedly connected with a plurality of guide rods, the guide rods penetrate through the lifting plate and are in sliding connection, the lower end of the lifting plate is symmetrically and fixedly connected with two vertical rods, and the lower ends of the two vertical rods are jointly and fixedly connected with a lifting ring. When the hydrolysis device is used, materials to be hydrolyzed can be uniformly dispersed in a water body, so that the actual hydrolysis effect is improved, and in addition, the L-shaped metal rod is matched with the spiral induction coil for heating, so that the temperature of the water body is more uniform.

Description

Technical Field

[0001] The present invention relates to the field of solid waste treatment, and in particular to a hydrothermal hydrolysis device for oil fracturing flowback solid waste. Background Art

[0002] During the process of oil extraction, a large amount of fracturing flowback solid waste is generated during fracturing operations. If these wastes are not treated in a timely and effective manner, they will not only occupy a large amount of land resources, but may also cause serious pollution to environmental elements such as soil and water bodies, destroying the ecological balance. Therefore, it is crucial to properly treat them.

[0003] Currently, for the treatment of oil fracturing flowback solid waste, the hydrothermal hydrolysis technology is a relatively effective method. However, there are many deficiencies in the existing hydrothermal hydrolysis devices in practical applications. On the one hand, during the hydrothermal hydrolysis process, the materials to be hydrolyzed are often difficult to be evenly dispersed in the water body. Uneven material distribution will lead to insufficient contact between some materials and the water body, making the hydrolysis reaction unable to proceed comprehensively and efficiently, thereby affecting the overall hydrolysis effect and reducing the treatment efficiency and quality of the waste.

[0004] On the other hand, there are problems of uneven temperature distribution in the existing heating methods. Traditional heating devices are usually located in fixed positions and can only heat local areas of the water body, easily resulting in large temperature differences at different positions of the water body, and the uniformity of hydrolysis needs to be improved. Summary of the Invention

[0005] The purpose of the present invention is to solve the deficiencies existing in the prior art, and to propose a hydrothermal hydrolysis device for oil fracturing flowback solid waste. When this hydrolysis device is in use, the materials to be hydrolyzed can be evenly dispersed in the water body, thereby improving the actual hydrolysis effect. In addition, the L-shaped metal rod is used in cooperation with the spiral induction coil for heating to make the temperature of the water body more uniform.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An apparatus for hydrothermal hydrolysis of solid waste from oil fracturing flowback includes a treatment cylinder, and a support frame is installed at the lower end of the treatment cylinder; a stirring mechanism, the stirring mechanism includes a driving motor installed at the upper end of the treatment cylinder, an output shaft of the driving motor extends into the treatment cylinder and is fixedly connected with a rotating shaft, a threaded layer is arranged on the rotating shaft, the threaded layer is a reciprocating thread, a lifting plate is threadedly connected to the threaded layer, a plurality of guide rods are fixedly connected to the inner top of the treatment cylinder, all the plurality of guide rods penetrate through the lifting plate and are slidably connected, two vertical rods are symmetrically and fixedly connected to the lower end of the lifting plate, the lower ends of the two vertical rods are jointly and fixedly connected with a lifting ring, the inner side of the lifting ring is rotatably connected with a rotating cylinder through a bearing, a strip-shaped groove is formed in the side wall of the rotating shaft, a guide strip is fixedly connected to the inner side of the rotating cylinder, the guide strip extends into the strip-shaped groove and is slidably connected, a fixing ring is fixedly connected to the outer side of the lower end portion of the rotating cylinder, two rectangular cavities are symmetrically formed in the fixing ring, a slidable rectangular slide plate is arranged in each rectangular cavity, L-shaped metal rods are fixedly connected to the opposite sides of the two rectangular slide plates, the horizontal portions of each L-shaped metal rod penetrate through the inner wall of the corresponding rectangular cavity and are slidably connected; a turning mechanism, the turning mechanism cooperates with the stirring mechanism to improve the stirring uniformity.

[0008] Preferably, a feeding port is arranged at the inner top of the treatment cylinder, and a discharging port is arranged at the inner bottom of the treatment cylinder.

[0009] Preferably, the opposite sides of the two rectangular slide plates are elastically connected to the inner walls of the corresponding rectangular cavities through first springs, a plurality of horizontal metal rods are fixedly connected to the opposite sides of the vertical portions of the two L-shaped metal rods, round-headed abutting blocks are fixedly connected to the opposite sides of the two L-shaped metal rods, and a plurality of abutting blocks are fixedly connected to the inner wall of the treatment cylinder at equal intervals. The side wall of each abutting block away from the treatment cylinder is composed of an inclined surface and an arc surface.

[0010] Preferably, an annular cavity is arranged in the inner wall of the treatment cylinder, and a spiral induction coil is installed in the annular cavity. The spiral induction coil is used to heat the L-shaped metal rods and the horizontal metal rods.

[0011] Preferably, the inner top space of the treatment cylinder is communicated with the outside through a pressure relief pipe, and a pressure relief valve is installed in the pressure relief pipe.

[0012] Preferably, a circulating air pump is installed on the right side of the treatment cylinder. The intake end of the circulating air pump is communicated with a first branch pipe and a second branch pipe. The other end of the second branch pipe extends to the inner top space of the treatment cylinder. Valves are installed at both the first branch pipe and the second branch pipe. A rotating pipe is rotatably connected to the inner bottom of the treatment cylinder. The lower end of the rotating pipe extends to the outside. The exhaust end of the circulating air pump is communicated with the lower end of the rotating pipe through a rotary joint. Two hollow strips are symmetrically and fixedly connected to the side wall of the part of the rotating pipe located on the inner wall of the treatment cylinder. Both hollow strips are communicated with the rotating pipe. A plurality of diversion holes are opened at the inner top of both hollow strips. The lower end of the rotating shaft is fixedly connected to the upper end of the rotating pipe.

[0013] Preferably, the turning mechanism is a connecting cylinder vertically arranged inside the treatment cylinder. The front and rear sides of the connecting cylinder are fixedly connected to the inner wall of the treatment cylinder through connecting strips. The lower end of the rotating shaft penetrates through the connecting cylinder. A spiral blade is installed at the position where the rotating shaft penetrates through the connecting cylinder.

[0014] Preferably, the outer side of the upper part of the connecting cylinder is rotatably connected with a throwing disc through a bearing. Two fixing rods are symmetrically and fixedly connected to the upper end of the throwing disc. A rotating ring is fixedly connected to the upper ends of both fixing rods. A second spring is fixedly connected to the lower end of the fixing ring. A driving ring is fixedly connected to the lower end of the second spring. Two guiding columns are symmetrically and fixedly connected to the upper end of the driving ring. Two guiding grooves are symmetrically opened at the lower end of the fixing ring. The upper ends of both guiding columns extend into the guiding grooves and are slidably connected to the inner walls of the guiding grooves. Rubber friction layers are arranged on the opposite surfaces of the driving ring and the rotating ring.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. By first flushing in nitrogen to discharge the liquid and the residual oxygen in the treatment cylinder, and then continuously flushing in nitrogen to create a high-pressure environment, it can effectively prevent the material from having an adverse reaction with oxygen during the hydrothermal hydrolysis process, provide a stable inert gas environment for the hydrolysis of the material, and ensure the safe and efficient progress of the hydrolysis reaction.

[0017] 2. The spiral induction coil heats the L-shaped metal rod and the horizontal metal rod. The metal rod reciprocates with the lifting plate and rotates with the rotating cylinder. At the same time, the round head abutting block and the abutting block cooperate to make the metal rod generate reciprocating motion and impact, greatly increasing the coverage range, realizing uniform heating of the water body, and improving the hydrolysis effect.

[0018] 3. When the second branch pipe is opened and the first branch pipe is closed, the circulating air pump circulates the gas in the treatment cylinder. The gas is discharged from the diversion holes through the rotating pipe and the hollow strips to form bubbles and float upward. The hollow strips rotate with the rotating pipe, promoting gas circulation and material agitation, and making the material mix more fully.

[0019] 4. The rotating shaft drives the spiral blade to rotate, moving the waste at the bottom of the treatment cylinder from bottom to top to the throwing tray, realizing the turning of the material, avoiding the accumulation of the material at the bottom, enabling the material to fully contact with the water body, and improving the uniformity and efficiency of the hydrolysis reaction.

[0020] 5. The driving ring rises, falls and rotates under the cooperation of the second spring and the guide post, intermittently driving the rotating ring to rotate, changing the rotation speed of the rotating ring, generating a changing centrifugal force, throwing the solid waste more dispersedly away from the rotating shaft, making the material more evenly dispersed in the water, and improving the stirring uniformity.

[0021] In summary, in actual use, this hydrolysis device avoids the oxidation of waste caused by heating in an inert environment, facilitating subsequent treatment. In addition, under the synergistic effect of the stirring mechanism and the turning mechanism, the overall treatment is more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a hot hydrolysis device for oil fracturing flowback solid waste proposed by the present invention;

[0023] Figure 2 is Figure 1 the sectional structural diagram of

[0024] Figure 3 is Figure 2 the front structural diagram of

[0025] Figure 4 is Figure 1 the structural diagram of the material dispersion mechanism of

[0026] Figure 5 is Figure 4 the sectional structural diagram of

[0027] Figure 6 is Figure 5 the enlarged view at A of

[0028] Figure 7 the enlarged view of one of the abutting blocks.

[0029] In the figure: 1 treatment cylinder, 2 support frame, 3 circulation air pump, 4 first branch pipe, 5 second branch pipe, 6 pressure relief pipe, 7 feeding port, 8 driving motor, 9 annular cavity, 10 spiral induction coil, 11 rotating shaft, 12 connecting cylinder, 13 discharging port, 14 connecting bar, 15 rotating pipe, 16 spiral blade, 17 rotary joint, 18 abutting block, 19 lifting plate, 20 thread layer, 21 guide rod, 22 L-shaped metal rod, 23 round head abutting block, 24 hollow bar, 25 shunt hole, 26 horizontal metal rod, 27 throwing plate, 28 rotating ring, 29 fixing rod, 30 driving ring, 31 guide bar, 32 rectangular cavity, 33 first spring, 34 rectangular sliding plate, 35 guide post, 36 guide groove, 37 second spring, 38 vertical rod, 39 lifting ring, 40 rotating cylinder, 41 strip-shaped groove, 42 fixing ring. Specific implementation mode

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0031] It should be noted that the terms used here are only for describing specific implementation modes and are not intended to limit the exemplary implementation modes according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] Refer to Figures 1-7 , a hot hydrolysis device for oil fracturing flowback solid waste, including a treatment cylinder 1, a support frame 2 is installed at the lower end of the treatment cylinder 1, a feeding port 7 is arranged at the inner top of the treatment cylinder 1, a discharging port 13 is arranged at the inner bottom of the treatment cylinder 1, a sealing cover as shown in the figure is installed at the feeding port 7, and when subsequent sealing is required, the sealing cover is covered. A sealing valve is installed at the discharging port 13. The inner top space of the treatment cylinder 1 is communicated with the outside through a pressure relief pipe 6, and a pressure relief valve is installed inside the pressure relief pipe 6. The pressure relief valve can avoid the situation of excessive pressure inside the treatment cylinder 1.

[0033] As an implementation mode of the present invention, it further includes a stirring mechanism. The stirring mechanism includes a driving motor 8 installed at the upper end of the treatment cylinder 1. The output shaft of the driving motor 8 extends into the treatment cylinder 1 and is fixedly connected with a rotating shaft 11. A thread layer 20 is arranged on the rotating shaft 11. The thread layer 20 is a reciprocating thread. When the rotating shaft 11 rotates, the lifting plate 19 can be reciprocally moved up and down through the thread layer 20.

[0034] As an implementation manner of the present invention, a lifting plate 19 is threadedly connected to the threaded layer 20. A plurality of guide rods 21 are fixedly connected to the inner top of the processing cylinder 1. The plurality of guide rods 21 all penetrate through the lifting plate 19 and are slidably connected. Two vertical rods 38 are symmetrically and fixedly connected to the lower end of the lifting plate 19. The lower ends of the two vertical rods 38 are jointly fixedly connected to a lifting ring 39. The inner side of the lifting ring 39 is rotatably connected to a rotating cylinder 40 through a bearing. A strip-shaped groove 41 is formed in the side wall of the rotating shaft 11. A guide strip 31 is fixedly connected to the inner side of the rotating cylinder 40. The guide strip 31 extends into the strip-shaped groove 41 and is slidably connected. A fixing ring 42 is fixedly connected to the outer side of the lower part of the rotating cylinder 40. Two rectangular cavities 32 are symmetrically formed inside the fixing ring 42. A slidable rectangular slide plate 34 is arranged in each rectangular cavity 32. L-shaped metal rods 22 are fixedly connected to the opposite sides of the two rectangular slide plates 34. The horizontal part of each L-shaped metal rod 22 penetrates through the inner wall of the corresponding rectangular cavity 32 and is slidably connected.

[0035] As an implementation manner of the present invention, the opposite sides of the two rectangular slide plates 34 are elastically connected to the inner walls of the corresponding rectangular cavities 32 through first springs 33. A plurality of horizontal metal rods 26 are fixedly connected to the opposite sides of the vertical parts of the two L-shaped metal rods 22. Round-headed abutting blocks 23 are fixedly connected to the opposite sides of the two L-shaped metal rods 22. A plurality of abutting blocks 18 are fixedly connected to the inner wall of the processing cylinder 1 at equal intervals. The side wall of each abutting block 18 away from the processing cylinder 1 is composed of an inclined surface and an arc surface. When the round-headed abutting block 23 rotates to contact the abutting block 18, under the action of the inclined surface of the abutting block 18, the round-headed abutting block 23 will drive the L-shaped metal rod 22, the plurality of horizontal metal rods 26 and the rectangular slide plate 34 to move closer to the rotating shaft 11. Subsequently, after leaving the abutting block 18, under the elastic action of the first spring 33, the whole formed by the L-shaped metal rod 22, the plurality of horizontal metal rods 26 and the rectangular slide plate 34 will move back and collide with the inner wall of the processing cylinder 1 under the action of inertia. In this process, not only the coverage range of the L-shaped metal rod 22 and the plurality of horizontal metal rods 26 is increased, improving the heating comprehensiveness and stirring comprehensiveness, but also the vibration generated during the collision is not likely to cause adhesion and blockage of the L-shaped metal rod 22 and the plurality of horizontal metal rods 26, ensuring the heat exchange and heating effects.

[0036] As an implementation manner of the present invention, an annular cavity 9 is arranged in the inner wall of the processing cylinder 1. A spiral induction coil 10 is installed inside the annular cavity 9. The spiral induction coil 10 is used to heat the L-shaped metal rod 22 and the horizontal metal rod 26. In this solution, the heating temperature of the spiral induction coil 10 is 160 °C.

[0037] As an implementation manner of the present invention, a circulating air pump 3 is installed on the right side of the treatment cylinder 1. The intake end of the circulating air pump 3 is communicated with a first branch pipe 4 and a second branch pipe 5. The other end of the second branch pipe 5 extends to the inner top space of the treatment cylinder 1. The other end of the first branch pipe 4 is communicated with an external nitrogen gas tank. The circulating air pump 3 adopts a high-pressure air pump. Valves are installed at both the first branch pipe 4 and the second branch pipe 5. A rotating pipe 15 is rotatably connected to the inner bottom of the treatment cylinder 1. The lower end of the rotating pipe 15 extends to the outside. The exhaust end of the circulating air pump 3 is communicated with the lower end of the rotating pipe 15 through a rotary joint 17. Two hollow strips 24 are symmetrically and fixedly connected to the side wall of the rotating pipe 15 located inside the inner wall of the treatment cylinder 1. Both of the two hollow strips 24 are communicated with the rotating pipe 15. A plurality of diversion holes 25 are opened at the inner top of both of the two hollow strips 24. The lower end of the rotating shaft 11 is fixedly connected to the upper end of the rotating pipe 15. After the water body and waste are put in at the feeding port 7 in the preparation stage, the valve of the first branch pipe 4 is opened, the valve of the second branch pipe 5 is closed, and the circulating air pump 3 is started. After the circulating air pump 3 is started, nitrogen gas can be flushed into the treatment cylinder 1 to take away the liquid and the residual oxygen originally inside the treatment cylinder 1. Then, the sealing cover is closed and the spiral induction coil 10 is turned on. At this time, nitrogen gas is continuously flushed in. As the amount of nitrogen gas increases, when the internal air pressure is higher than the threshold value of the pressure relief valve, the valve of the second branch pipe 5 is opened and the valve of the first branch pipe 4 is closed. Then the drive motor 8 can be started.

[0038] As an implementation manner of the present invention, it further includes a turning mechanism. The turning mechanism cooperates with the stirring mechanism to improve the stirring uniformity. The turning mechanism is vertically arranged on the connecting cylinder 12 inside the processing cylinder 1. Both the front and rear sides of the connecting cylinder 12 are fixedly connected to the inner wall of the processing cylinder 1 through connecting bars 14. The lower end of the rotating shaft 11 penetrates through the connecting cylinder 12. A spiral blade 16 is installed at the position where the rotating shaft 11 penetrates through the connecting cylinder 12. The spiral blade 16 will make the waste accumulated at the bottom move from bottom to top and finally move to the throwing tray 27. The upper part of the outer side of the connecting cylinder 12 is rotatably connected to the throwing tray 27 through a bearing. Two fixing rods 29 are symmetrically and fixedly connected to the upper end of the throwing tray 27. A rotating ring 28 is fixedly connected to the upper ends of the two fixing rods 29 together. The lower end of the fixing ring 42 is fixedly connected to a second spring 37. The lower end of the second spring 37 is fixedly connected to a driving ring 30. Two guiding columns 35 are symmetrically and fixedly connected to the upper end of the driving ring 30. Two guiding grooves 36 are symmetrically opened at the lower end of the fixing ring 42. The upper ends of the two guiding columns 35 both extend into the guiding grooves 36 and are slidably connected to the inner walls of the guiding grooves 36. Rubber friction layers are arranged on the opposite surfaces of the driving ring 30 and the rotating ring 28. With this structural arrangement, during the lifting and rotation of the driving ring 30, it will intermittently contact the rotating ring 28. When contacting, it will drive the rotating ring 28 to rotate by using the frictional force. And after non-contact, under the action of inertia, the rotating ring 28 will rotate with a decreasing rotational speed. By this method, the rotational speed of the rotating ring 28 is in a changing state throughout the process, and the generated centrifugal force changes. Since the solid waste is generally processed after being broken into uniform granular shapes, after the centrifugal force changes, these solid wastes will be thrown by the throwing tray 27 more dispersedly to a place far from the rotating shaft 11 and fall more dispersedly in the water.

[0039] In the present invention, water body and oil fracturing flowback solid waste are put into the processing cylinder 1 from the feeding port 7 at the inner top of the processing cylinder 1. After the putting is completed, the valve of the first branch pipe 4 is opened, the valve of the second branch pipe 5 is closed, and the circulating air pump 3 is started. The circulating air pump 3 extracts nitrogen from the external nitrogen tank through the first branch pipe 4 and fills nitrogen into the processing cylinder 1 to take away the liquid and the oxygen remaining in the processing cylinder 1 originally.

[0040] Subsequently, the sealing cover is closed. After closing the sealing cover, the spiral induction coil 10 is turned on. The spiral induction coil 10 heats the L-shaped metal rod 22 and the horizontal metal rod 26 in the annular cavity 9, and the heating temperature is 160 °C to increase the temperature of the water body in the processing cylinder 1 and perform hydrothermal treatment on the materials. At this time, nitrogen is continuously filled into the processing cylinder 1. As the amount of nitrogen increases, the internal pressure of the processing cylinder 1 rises. When the pressure is higher than the threshold value of the pressure relief valve, the valve of the second branch pipe 5 is opened, and the valve of the first branch pipe 4 is closed. The high-pressure environment can promote the progress of the hydrolysis reaction.

[0041] Subsequently, the driving motor 8 is started, and the output shaft of the driving motor 8 drives the rotating shaft 11 to rotate. The threaded layer 20 on the rotating shaft 11 is a reciprocating thread. Under the guiding action of the guiding rod 21, the lifting plate 19 threadedly connected to the threaded layer 20 will reciprocate up and down. The lifting plate 19 drives the lifting ring 39 to reciprocate up and down through the vertical rod 38, and the rotating cylinder 40 rotatably mounted inside the lifting ring 39 by means of a bearing also moves accordingly. Since the guiding strip 31 inside the rotating cylinder 40 slides in the strip-shaped groove 41 on the side wall of the rotating shaft 11, the rotating cylinder 40 will rotate with the rotating shaft 11, and the fixing ring 42 on the outer side of the lower end portion of the rotating cylinder 40 rotates with the rotating cylinder 40, so that the L-shaped metal rod 22, the plurality of horizontal metal rods 26, etc. rotate accordingly. When the round-headed abutting block 23 rotates to contact the abutting block 18 on the inner wall of the treatment cylinder 1, under the action of the inclined surface of the abutting block 18, the round-headed abutting block 23 drives the L-shaped metal rod 22, the plurality of horizontal metal rods 26, and the rectangular sliding plate 34 to move closer to the rotating shaft 11; when the round-headed abutting block 23 leaves the abutting block 18, under the elastic action of the first spring 33, the whole moves back and collides with the inner wall of the treatment cylinder 1 under the action of inertia, increasing the coverage range of the L-shaped metal rod 22 and the plurality of horizontal metal rods 26, improving the heating comprehensiveness and stirring comprehensiveness, and at the same time preventing adhesion and occlusion of the L-shaped metal rod 22 and the plurality of horizontal metal rods 26, ensuring the heating effect.

[0042] It should be noted that the L-shaped metal rod 22 and the plurality of horizontal metal rods 26 will also move up and down as the lifting plate 19 moves up and down, so that the overall coverage range can be larger, and thus the heating comprehensiveness and stirring comprehensiveness are better;

[0043] When the second branch pipe 5 is opened and the first branch pipe 4 is closed, after the circulating air pump 3 is started, internal circulating gas flow will be generated. This circulating gas flow can suck the gas in the top space of the treatment cylinder 1 and then blow it into the rotating pipe 15. It passes through the two hollow strips 24 communicated with the rotating pipe 15 and is discharged from the plurality of diversion holes 25 at the inner top of the hollow strip 24, floating in the form of bubbles, promoting the gas circulation in the treatment cylinder 1 and the stirring of the materials. Moreover, the rotating pipe 15 rotates with the rotation of the rotating shaft 11, causing the two hollow strips 24 to rotate, further improving the evenness of bubble discharge and further improving the stirring effect.

[0044] The spiral blade 16 installed at the penetration connection cylinder 12 of the rotating shaft 11 rotates with the rotating shaft 11, moving the waste accumulated at the bottom inside the treatment cylinder 1 from bottom to top, and finally moving to the throwing tray 27, realizing the turning of the material, making the overall dispersion of the material more uniform. In addition, with the cooperation of the second spring 37 and the guide post 35 at the lower end of the fixed ring 42, the driving ring 30 can be driven to lift and rotate. Rubber friction layers are provided on the opposite surfaces of the driving ring 30 and the rotating ring 28. During the lifting and rotating process of the driving ring 30, it intermittently contacts the rotating ring 28, and drives the rotating ring 28 to rotate by using the frictional force. When not in contact, the rotating ring 28 rotates at a decreasing rotational speed under the action of inertia, so that the rotational speed of the rotating ring 28 changes throughout the process, and the generated centrifugal force changes, throwing the solid waste more dispersedly to a place far from the rotating shaft 11, making it fall more dispersedly in water and improving the stirring uniformity;

[0045] After the hydrothermal treatment is completed, open the sealing valve at the discharge port 13 to discharge the treated material.

[0046] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of the present application are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0047] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A hot hydrolysis device for oil fracturing flowback solid waste, characterized in that, Comprising: A processing cylinder (1), with a support frame (2) installed at the lower end of the processing cylinder (1); A stirring mechanism, which includes a driving motor (8) installed at the upper end of the processing cylinder (1). The output shaft of the driving motor (8) extends into the interior of the processing cylinder (1) and is fixedly connected to a rotating shaft (11). A threaded layer (20) is provided on the rotating shaft (11), and the threaded layer (20) is a reciprocating thread. A lifting plate (19) is threadedly connected to the threaded layer (20). A plurality of guide rods (21) are fixedly connected to the inner top of the processing cylinder (1). All the plurality of guide rods (21) penetrate through the lifting plate (19) and are slidably connected. Two vertical rods (38) are symmetrically and fixedly connected to the lower end of the lifting plate (19). The lower ends of the two vertical rods (38) are jointly and fixedly connected to a lifting ring (39). The inner side of the lifting ring (39) is rotationally connected to a rotating cylinder (40) through a bearing. A strip-shaped groove (41) is formed in the side wall of the rotating shaft (11). A guide strip (31) is fixedly connected to the inner side of the rotating cylinder (40). The guide strip (31) extends into the strip-shaped groove (41) and is slidably connected. A fixing ring (42) is fixedly connected to the outer side of the lower part of the rotating cylinder (40). Two rectangular cavities (32) are symmetrically formed inside the fixing ring (42). A slidable rectangular slide plate (34) is arranged in each rectangular cavity (32). L-shaped metal rods (22) are fixedly connected to the opposite sides of the two rectangular slide plates (34). The horizontal part of each L-shaped metal rod (22) penetrates through the inner wall of the corresponding rectangular cavity (32) and is slidably connected; A turning mechanism, which cooperates with the stirring mechanism to improve the uniformity of stirring.

2. The hot hydrolysis device for oil fracturing flowback solid waste according to claim 1, wherein A feeding port (7) is arranged at the inner top of the processing cylinder (1), and a discharging port (13) is arranged at the inner bottom of the processing cylinder (1).

3. The hot hydrolysis device for oil fracturing flowback solid waste according to claim 1, characterized in that, The opposite sides of the two rectangular slide plates (34) are elastically connected to the inner walls of the corresponding rectangular cavities (32) through first springs (33). A plurality of horizontal metal rods (26) are fixedly connected to the opposite sides of the vertical parts of the two L-shaped metal rods (22). Round head abutting blocks (23) are fixedly connected to the opposite sides of the two L-shaped metal rods (22). A plurality of abutting blocks (18) are fixedly connected to the inner wall of the processing cylinder (1) at equal intervals. The side wall of each abutting block (18) away from the processing cylinder (1) is composed of an inclined surface and an arc surface.

4. The hot hydrolysis device for oil fracturing flowback solid waste according to claim 3, characterized in that, An annular cavity (9) is arranged in the inner wall of the processing cylinder (1), and a spiral induction coil (10) is installed inside the annular cavity (9). The spiral induction coil (10) is used to heat the L-shaped metal rods (22) and the horizontal metal rods (26).

5. The hot hydrolysis device for oil fracturing flowback solid waste according to claim 1, characterized in that, The inner top space of the processing cylinder (1) is communicated with the outside through a pressure relief pipe (6), and a pressure relief valve is installed inside the pressure relief pipe (6).

6. The hot hydrolysis device for oil fracturing flowback solid waste according to claim 5, characterized in that, A circulating air pump (3) is installed on the right side of the processing cylinder (1). The intake end of the circulating air pump (3) is communicated with a first branch pipe (4) and a second branch pipe (5). The other end of the second branch pipe (5) extends to the inner top space of the processing cylinder (1). Valves are installed at both the first branch pipe (4) and the second branch pipe (5). A rotating pipe (15) is rotatably connected to the inner bottom of the processing cylinder (1). The lower end of the rotating pipe (15) extends to the outside. The exhaust end of the circulating air pump (3) is communicated with the lower end of the rotating pipe (15) through a rotary joint (17). Two hollow strips (24) are symmetrically and fixedly connected to the side wall of the rotating pipe (15) located inside the inner wall of the processing cylinder (1). Both of the two hollow strips (24) are communicated with the rotating pipe (15). A plurality of shunt holes (25) are formed in the inner top of both of the two hollow strips (24). The lower end of the rotating shaft (11) is fixedly connected to the upper end of the rotating pipe (15).

7. A hot hydrolysis device for oil fracturing flowback solid waste according to claim 6, characterized in that, The turning mechanism is a connecting cylinder (12) vertically arranged inside the processing cylinder (1). Both the front and rear sides of the connecting cylinder (12) are fixedly connected to the inner wall of the processing cylinder (1) through connecting strips (14). The lower end of the rotating shaft (11) penetrates through the connecting cylinder (12). A spiral blade (16) is installed at the position where the rotating shaft (11) penetrates through the connecting cylinder (12).

8. A hot hydrolysis device for oil fracturing flowback solid waste according to claim 1, characterized in that, The upper part of the outer side of the connecting cylinder (12) is rotatably connected with a throwing disc (27) through a bearing. Two fixing rods (29) are symmetrically and fixedly connected to the upper end of the throwing disc (27). A rotating ring (28) is fixedly connected to the upper ends of the two fixing rods (29) together. A second spring (37) is fixedly connected to the lower end of the fixing ring (42). The lower end of the second spring (37) is fixedly connected to a driving ring (30). Two guiding columns (35) are symmetrically and fixedly connected to the upper end of the driving ring (30). Two guiding grooves (36) are symmetrically formed in the lower end of the fixing ring (42). The upper ends of the two guiding columns (35) both extend into the guiding grooves (36) and are slidably connected to the inner walls of the guiding grooves (36). Rubber friction layers are provided on the opposite surfaces of the driving ring (30) and the rotating ring (28).

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