A kind of equipment and method for pyrolysis treatment of oily sludge

Abstract

The present invention relates to the technical field of sludge treatment, specifically to a pyrolysis treatment device and method for oil-containing sludge, wherein the pyrolysis treatment device for oil-containing sludge includes an equipment platform, on which a pyrolysis box and a driving chassis are mounted; a pyrolysis closed tube is arranged in the pyrolysis box, a feed hopper is connected to the top of the box body of the pyrolysis box, the bottom of the feed hopper is connected to the pyrolysis closed tube, and a guide tube is arranged at the output end of the pyrolysis closed tube; a driving connection box is arranged on the driving chassis, a turning roller is arranged in the inner cavity of the pyrolysis closed tube, and the power input end of the turning roller is connected to the driving connection box; an inner box bracket is also arranged in the pyrolysis box, a plurality of heating parts are installed in the inner box bracket, a plurality of heat conduction parts are arranged on the outer wall of the pyrolysis closed tube, and the heat conduction parts are connected one by one with the heating parts. The present invention is designed so that the oil-containing sludge is continuously heated during the movement, and both the inside and the outside are continuously subjected to high-temperature heat treatment; and it can be effectively configured in the overall sludge treatment production line to improve the operation efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of sludge treatment, in particular to a pyrolysis treatment device and method for oil-containing sludge. Background Art

[0002] With the continuous development of oil extraction and industrial production, a large amount of oily sludge waste is generated. These sludges contain a lot of grease, heavy metals and other harmful substances, which pose a serious threat to the environment and human health. Traditional treatment methods such as landfill and incineration not only occupy a lot of land resources, but also may cause secondary pollution. Oily sludge treatment equipment is used to treat oily sludge.

[0003] In the prior art, the pyrolysis treatment equipment of oily sludge generally includes a feeding mechanism, a pyrolysis furnace, a connecting mechanism and a transmission mechanism; the pyrolysis furnace includes: an inner cylinder and an outer cylinder; the outer cylinder is sleeved on the inner cylinder, and a cavity is formed between the outer cylinder and the inner cylinder. However, the prior art has certain defects. The pyrolysis of the oily sludge by the pyrolysis furnace is uneven, so that the oily sludge in the inner layer of the cylinder cannot be effectively pyrolyzed. Summary of the invention

[0004] The object of the present invention is to provide a device and method for pyrolysis treatment of oily sludge to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A pyrolysis treatment equipment for oily sludge comprises an equipment platform, wherein a pyrolysis box and a driving chassis are mounted on the equipment platform; a pyrolysis closed tube is arranged in the pyrolysis box, a feed hopper is externally connected to the top of the box body of the pyrolysis box, the bottom end of the feed hopper is connected to the pyrolysis closed tube, and an outlet pipe is arranged at the output end of the pyrolysis closed tube; a driving connection box is arranged on the driving chassis, a turning roller is arranged in the inner cavity of the pyrolysis closed tube, a power input end of the turning roller is connected to the driving connection box, and the end of the turning roller extends into the outlet pipe; an inner box bracket is also arranged in the pyrolysis box, a plurality of heating parts are installed in the inner box bracket, a plurality of heat conduction parts are sleeved on the outer wall of the pyrolysis closed tube, and the heat conduction parts are connected to the heating parts one by one; an exhaust pipe group is externally connected to the pyrolysis closed tube, a condensing chassis is arranged on the outer box wall of the pyrolysis box, and the pipe end of the exhaust pipe group is connected to the condensing chassis.

[0007] As a further solution of the present invention: the pyrolysis closed tube includes a heating tank body and a guide tube body, the heating tank body and the guide tube body are connected to form an integrated structure through a first tube body connecting sleeve, the drive connecting box includes a driving end docking box and a closed frame arranged on the periphery of the driving end docking box, the box body of the pyrolysis box is provided with an outer support frame of the box, the closing frame is installed in the outer support frame of the box through an inner connecting sleeve, the other end of the guide tube body is connected to the inner connecting sleeve through the inner connecting frame to form an integrated structure, and the other end of the heating tank body is connected to the outlet pipe through a second tube body connecting sleeve to form an integrated structure.

[0008] As a further solution of the present invention: the feed hopper includes a hopper body and a discharge valve port arranged at the bottom of the hopper body, and the discharge valve port is communicated with the inner cavity of the guide tube body.

[0009] As a further solution of the present invention: the material turning roller includes a roller body and a roller shaft arranged at the driving end of the roller body, the roller body of the roller body is provided with an auxiliary spiral auger, a breaking piece, a diffusion spiral piece and a main spiral auger, the auxiliary spiral auger is located in the tube area of ​​the guide tube body, and the main spiral auger is located in the tube area of ​​the heating tank body; the breaking piece is arranged behind the auxiliary spiral auger and at the bottom of the unloading valve mouth, the breaking piece includes a plurality of groups of cutting claw blocks, and each group of cutting claw blocks is arranged in an equidistant ring; the diffusion spiral piece is located between the breaking piece and the main spiral auger, and the diffusion spiral piece includes a plurality of rows of hook-shaped blocks, and each row of hook-shaped blocks is arranged in a spiral along the roller surface of the roller body.

[0010] As a further solution of the present invention: a support mounting frame is arranged in the inner box bracket, the heating component includes a heating machine arranged on the heating machine, a heating component arranged in the heating machine and a heat-conducting pipe installed at the air outlet of the heating component, and the heating machine is externally connected to an air supply duct.

[0011] As a further solution of the present invention: the heat conduction member includes an annular heat conducting frame, which is an annular structure and is sleeved on the periphery of the guide pipe body, and a heat flow inlet is provided at the annular heat conducting frame, and the heat conduction pipe is connected with the inner cavity of the annular heat conducting frame through the heat flow inlet, and a heat flow guide bar is provided on the inner wall of the annular heat conducting frame, and a plurality of heat flow guide grooves are opened on the inner surface of the heat flow guide bar, and a heat conduction zone is formed in the heat flow guide groove.

[0012] As a further solution of the present invention: the heat conduction member also includes a heat absorption member sleeved on the outer wall of the guide tube body, the heat absorption member is located in the corresponding annular heat conduction frame and a heat conduction inner ring is arranged between the heat conduction member and the tube wall of the heating tank body.

[0013] As a further solution of the present invention: the condensing box includes a box body and several rows of condensing tube groups arranged in the box body, the box body is fixed to the outer box wall of the pyrolysis box through a fixing plate, the inner cavity of the box body is provided with a condensing zone, the condensing zone is externally connected to a condensate inlet pipe, the condensing tube group is arranged in the condensing zone, and each row of the condensing tube group includes several heat exchange curved tubes.

[0014] The present invention also discloses a method for treating oily sludge by pyrolysis, comprising the following steps:

[0015] Step 1: Open the valve at the feed hopper, use a conveyor belt to transport the oily sludge into the feed hopper, and let it fall along the body of the feed hopper into the pyrolysis closed tube;

[0016] Step 2: Start the driving chassis, which drives the turning roller to move. The speed of the turning roller is set to 100 rpm, and the oily sludge is slowly guided to the rear of the inner cavity of the pyrolysis closed tube 13; at the same time, the heating element is started, so that the heating element heats the heat transfer element, thereby heating the entire pyrolysis closed tube, and the initial heating temperature is set to 350°C for the scattered parts;

[0017] Step 3: After all the pyrolysis amount of the oily sludge is injected, the valve at the feed hopper is closed, and the turning roller is continuously driven to compress the oily sludge and concentrate it in the inner area of ​​the guide pipe body;

[0018] Step 4: Increase the speed of the turning roller, set the speed of the turning roller to 250 rpm of the condensing box, control the heating element to continuously supply heat, and increase the heating temperature of the heat transfer element to 500°C, so that the heavy oil begins to be thermally cracked, and the thermal decomposition continues for 3 hours;

[0019] Step 5: Stop the movement of the turning roller, open the exhaust pipe group, extract the air flow in the pyrolysis closed tube, and lead out the gas mixture of oil, water and non-condensable gas.

[0020] Step 6: After the extraction is completed, open the valve in the outlet pipe, then start the turning roller to collect the solid coke through the outlet pipe.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The feed hopper is an input device for oily sludge. The sludge is fed from the feed hopper and falls into the tube body of the pyrolysis closed tube. The pyrolysis closed tube is a bearing component for sludge pyrolysis treatment. The pyrolysis closed tube is arranged in a pyrolysis box. The pyrolysis box is an operating equipment for pyrolysis treatment and provides a thermal environment for pyrolysis operation. A turning roller is also arranged in the inner cavity of the tube body of the pyrolysis closed tube, and a driving chassis is externally connected as a driving device for the turning roller. A plurality of heat conduction members are arranged on the outer tube wall of the pyrolysis closed tube, and the heat conduction members serve as a heat source. The heat conduction members are arranged at The outer tube body of the pyrolysis closed tube is provided with sections of heating areas, forming a continuous heating path to ensure that the oily sludge continues to heat up during movement; the turning roller simultaneously drives the continuous turning of the oily sludge during the transportation of the oily sludge, thereby improving the heat conduction effect and ensuring that the oily sludge is continuously subjected to high-temperature heat treatment inside and outside; when moving to the end of the turning roller, the exhaust pipe group performs exhaust treatment to introduce vaporized water vapor, oil gas and non-condensable gas into the condensing chassis, and the solid coke is discharged and collected through the outlet pipe. The present invention can be effectively configured in the overall sludge processing production line, improve operating efficiency, and realize the harmless treatment of waste and resource recycling.

[0023] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings herein are incorporated into and constitute a part of the specification to illustrate embodiments consistent with the present application and are used together with the specification to explain the principles of the present application. At the same time, these drawings and text descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application for those skilled in the art by referring to specific embodiments.

[0025] Figure 1 A schematic diagram of the overall structure of an oily sludge pyrolysis treatment device provided in an embodiment of the present invention.

[0026] Figure 2 A schematic diagram of the structure of a pyrolysis closed tube provided in an embodiment of the present invention.

[0027] Figure 3 A schematic structural diagram of a material turning roller provided in an embodiment of the present invention.

[0028] Figure 4 For the present invention Figure 2 Schematic diagram of the structure of area A in the middle.

[0029] Figure 5 A schematic structural diagram of a condensing chassis provided in an embodiment of the present invention.

[0030] In the figure: 11, equipment machine; 12, pyrolysis box; 13, pyrolysis closed tube; 14, drive chassis; 15, feed hopper; 16, outlet pipe; 17, drive connection box; 18, turning roller; 21, inner box bracket; 22, heat transfer part; 23, heating part; 24, exhaust pipe group; 25, condensing box; 31, roller shaft; 32, roller body; 33, auxiliary spiral auger; 34, main spiral auger; 35, breaking up parts; 36, diffusion spiral; 37, cutting claw block; 38, hook block; 41, heating tank; 42, guide tube body; 43, drive end docking box; 44, closing frame; 45, inner connection frame; 4 6. Inner connecting sleeve; 47. External supporting frame of the box; 48. First pipe connecting sleeve; 49. Second pipe connecting sleeve; 51. Bucket; 52. Discharge valve port; 61. Support mounting frame; 62. Heat supply machine; 63. Heating assembly; 64. Heat transfer pipe; 65. Air supply duct; 71. Annular heat transfer frame; 72. Heat flow inlet; 73. Fixed column; 74. Heat flow guide column; 75. Heat flow guide groove; 76. Heat transfer zone; 77. Heat absorbing component; 78. Heat conduction inner ring; 81. Fixed plate; 82. Box; 83. Condensation zone; 84. Condensation tube group; 85. Heat exchange curved tube; 86. Condensate inlet tube. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0032] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0034] In one embodiment, see Figure 1, provides an oily sludge pyrolysis treatment device, including an equipment platform 11, on which a pyrolysis box 12 and a driving chassis 14 are mounted; a pyrolysis closed tube 13 is arranged in the pyrolysis box 12, a feed hopper 15 is connected to the top of the box body of the pyrolysis box 12, the bottom end of the feed hopper 15 is connected to the pyrolysis closed tube 13, and an outlet pipe 16 is arranged at the output end of the pyrolysis closed tube 13; a drive connection box 17 is arranged on the driving chassis 14, and a turning roller 18 is arranged in the inner cavity of the pyrolysis closed tube 13, and the turning roller 18 is arranged in the inner cavity of the pyrolysis closed tube 13. The power input end of 8 is connected to the driving connection box 17, and the end of the material turning roller 18 extends into the outlet pipe 16; the pyrolysis box 12 is also provided with an inner box bracket 21, and a plurality of heating components 23 are installed in the inner box bracket 21, and a plurality of heat conduction components 22 are sleeved on the outer wall of the pyrolysis closed tube 13, and the heat conduction components 22 are connected to the heating components 23 in a one-to-one manner; the pyrolysis closed tube 13 is externally connected to an exhaust pipe group 24, and a condensing chassis 25 is provided on the outer box wall of the pyrolysis box 12, and the pipe end of the exhaust pipe group 24 is connected to the condensing chassis 25.

[0035] The present embodiment is used for the pyrolysis treatment of oily sludge. The feed hopper 15 is an input device for the oily sludge. The sludge is fed from the feed hopper 15 and falls into the tube body of the pyrolysis closed tube 13. The pyrolysis closed tube 13 is a bearing component for the sludge pyrolysis treatment. The pyrolysis closed tube 13 is arranged in a pyrolysis box 12. The pyrolysis box 12 is an operating equipment for the pyrolysis treatment and provides a thermal environment for the pyrolysis operation. A turning roller 18 is also arranged in the inner cavity of the tube body of the pyrolysis closed tube 13, and a driving chassis 14 is externally connected as a driving device for the turning roller 18. A plurality of heat conducting members 22 are arranged on the outer tube wall of the pyrolysis closed tube 13. The heat conducting members 22 serve as a heat source. At the same time, an exhaust pipe group 24 is externally connected to the top of the tube body end of the pyrolysis closed tube 13. The exhaust pipe group 24 is used to discharge water vapor and oil vapor generated by the pyrolysis treatment.

[0036] During operation, the sludge is discharged from the feed hopper 15 and continuously introduced into the inner cavity of the pyrolysis closed tube 13 through the turning roller 18. During the sludge pyrolysis treatment process, as the temperature rises, low-boiling light hydrocarbons evaporate from the oily sludge. When the temperature exceeds 300°C, the heavy oil begins to be thermally cracked, and the hydrocarbons will generate free radicals due to thermal activation, and a series of free radical reactions will occur. On the one hand, they will proceed in the direction of cracking to generate small molecular hydrocarbons, and on the other hand, they will proceed in the direction of condensation to form coke and char, and finally generate four products: oil, water, non-condensable gas and coke. The heat conduction member 22 is located in the pyrolysis closed tube. The outer tube body of 13 is provided with heating areas in sections, forming a continuous heating path to ensure that the oily sludge is continuously heated during movement; the turning roller 18 drives the oily sludge to be continuously turned during the transportation of the oily sludge, thereby improving the heat conduction effect and ensuring that the oily sludge is continuously subjected to high-temperature heat treatment inside and outside; when it moves to the end of the turning roller 18, the exhaust pipe group 24 performs exhaust treatment to introduce the vaporized water vapor, oil gas and non-condensable gas into the condensing box 25, and the solid coke is discharged and collected through the outlet pipe 16, and then introduced into the next batch of oily sludge to be treated from the feed hopper 15. It can operate continuously and can be effectively configured in the overall sludge treatment production line to improve the operation efficiency of the production line.

[0037] In one embodiment, see Figure 1 and Figure 2 This embodiment is a further design of the above embodiment. On this basis, the specific implementation structure of the pyrolysis closed tube 13 is designed as follows:

[0038] The pyrolysis closed tube 13 includes a heating tank body 41 and a guide tube body 42, and the heating tank body 41 and the guide tube body 42 are connected to form an integrated structure through a first tube body connecting sleeve 48. The driving connection box 17 includes a driving end docking box 43 and a closing frame 44 arranged on the periphery of the driving end docking box 43. The box body of the pyrolysis box 12 is provided with an outer box support frame 47, and the closing frame 44 is installed in the outer box support frame 47 through an inner connecting sleeve 46. The other end of the guide tube body 42 is connected to the inner connecting sleeve 46 through an inner connecting frame 45 to form an integrated structure. The other end of the heating tank body 41 is connected to the outlet pipe 16 through a second tube body connecting sleeve 49 to form an integrated structure.

[0039] The pyrolysis closing tube 13 is installed as a whole in the pyrolysis box 12, and is installed as an integrated structure by combining the heating tank body 41 and the guide tube body 42. The driving connection box 17 is a connecting component between the driving chassis 14 and the pyrolysis box 12. The driving chassis 14 is connected to the outer box support frame 47 on the box shell of the pyrolysis box 12 through the closing frame 44 with the supporting component of the driving end docking box 43 as an integrated structure, and the inner connecting sleeve 46 is connected to the guide tube body 42 as an integrated structure, thereby maintaining the heat sealing effect of the overall pyrolysis box 12 during operation, and also maintaining the sealing and closing effect of the pyrolysis closing tube 13 on the sludge.

[0040] In one embodiment, see Figure 1 , Figure 2 and Figure 3 This embodiment is a further design of the above embodiment. On this basis, the specific implementation structure of the oily sludge introduction is designed as follows:

[0041] The feed hopper 15 includes a hopper body 51 and a discharge valve port 52 disposed at the bottom of the hopper body 51 . The discharge valve port 52 is communicated with the inner cavity of the guide tube body 42 .

[0042] The turning roller 18 includes a roller body 32 and a roller shaft 31 arranged at the driving end of the roller body 32, and the roller body 32 of the roller body 32 is provided with an auxiliary spiral auger 33, a dispersing piece 35, a diffusion spiral piece 36 and a main spiral auger 34, the auxiliary spiral auger 33 is located in the tube area of ​​the guide tube body 42, and the main spiral auger 34 is located in the tube area of ​​the heating tank body 41; the dispersing piece 35 is arranged behind the auxiliary spiral auger 33 and at the bottom of the unloading valve port 52, the dispersing piece 35 includes a plurality of groups of cutting claw blocks 37, and each group of cutting claw blocks 37 is arranged in an equidistant ring shape; the diffusion spiral piece 36 is located between the dispersing piece 35 and the main spiral auger 34, and the diffusion spiral piece 36 includes a plurality of rows of hook-shaped blocks 38, and each row of hook-shaped blocks 38 is arranged in a spiral shape along the roller surface of the roller body 32.

[0043] During operation, the oily sludge slides down the bucket body 51 and falls into the guide tube body 42 through the discharge valve port 52. The scattering member 35 is located directly below the discharge port of the discharge valve port 52. As an example, a mechanism arrangement is shown in the figure. In this embodiment, every four cutting claw blocks 37 form a group and are installed on the roller body 32 in a ring shape. The scattering member 35 is composed of four groups of cutting claw blocks 37. As the roller body 32 rotates, the claws of the cutting claw blocks 37 contact the falling oily sludge, forming an effect of tearing the oily sludge, so that The oily sludge is made more uniform when it is fed in, and the problem of sludge agglomeration is reduced. The auxiliary spiral auger 33 plays an auxiliary guiding role, guiding the sludge that falls into the front end of the pyrolysis closed tube 13 (left side of the figure) to the right; the diffusion spiral 36 is composed of spirally arranged hook blocks 38. On the basis of tearing the sludge by the scattering member 35, the torn sludge is conveyed backward in a diffused manner (right side of the figure), further making the sludge more evenly distributed on the periphery of the main spiral auger 34, thereby improving the uniformity of subsequent pyrolysis treatment of the oily sludge.

[0044] In one embodiment, see Figure 1 , Figure 2 and Figure 4 This embodiment is a further design of the above embodiment. On this basis, the specific implementation structure of the heat conducting member 22 and the heat supply member 23 is designed as follows:

[0045] A support mounting frame 61 is provided in the inner box bracket 21, and the heating component 23 includes a heating machine 62 provided on the heating machine 62, a heating component 63 provided in the heating machine 62, and a heat-conducting pipe 64 installed at the air outlet of the heating component 63. The heating machine 62 is externally connected to an air supply duct 65.

[0046] The heat conducting member 22 includes an annular heat conducting frame 71, which is an annular structure and is sleeved on the periphery of the guide tube body 42 and fixed by a fixing bar 73; a heat flow inlet 72 is provided at the annular heat conducting frame 71, and the heat conducting pipe 64 is connected to the inner cavity of the annular heat conducting frame 71 through the heat flow inlet 72; a heat flow guiding bar 74 is provided on the inner wall of the annular heat conducting frame 71, and a plurality of heat flow guiding grooves 75 are opened on the inner surface of the heat flow guiding bar 74, and a heat conducting area 76 is formed in the heat flow guiding groove 75; the heat conducting member 22 also includes a heat absorbing member 77 sleeved on the outer wall of the guide tube body 42, and the heat absorbing member 77 is located in the corresponding annular heat conducting frame 71 and a heat conducting inner ring 78 is provided between the heat absorbing member 77 and the tube wall of the heating tank body 41.

[0047] The heat supply machine 62 is used as the heat supply structure, and the air supply conduit 65 is used as the input tool of the air flow. This embodiment uses high-temperature nitrogen as the heat source medium. The nitrogen is heated and introduced into the heat-conducting pipe 64 through the heating component 63. The high-temperature nitrogen enters the inner cavity of the annular heat-conducting frame 71 through the heat flow inlet 72. The inner wall of the annular heat-conducting frame 71 is provided with a heat flow guide bar 74. The high-temperature nitrogen moves in an annular direction along the heat-conducting interval 76, and then directly moves along the surface of the heat-absorbing component 77. The heat-conducting inner ring 78 is made of heat-conducting material and extends to the inner wall of the guide tube body 42, so as to contact the oil-containing sludge; therefore, the oil-containing sludge is continuously heated by the high-temperature nitrogen during the backward spiral movement, and a series of free radical reactions occur during pyrolysis. On the one hand, it moves in the direction of cracking to generate small molecular hydrocarbons, and on the other hand, it moves in the direction of condensation to generate coking and charcoal, and finally generates four products: oil, water, non-condensable gas and coke.

[0048] In one embodiment, see Figure 1 and Figure 5 This embodiment is a further design of the above embodiment. On this basis, for the specific implementation structure of the condensing chassis 25, this embodiment is designed as follows:

[0049] The condensing box 25 includes a box body 82 and several rows of condensing tube groups 84 arranged in the box body 82. The box body 82 is fixed to the outer box wall of the pyrolysis box 12 through a fixing plate 81. The inner cavity of the box body 82 is provided with a condensing zone 83. The condensing zone 83 is externally connected to a condensate inlet pipe 86. The condensing tube group 84 is arranged in the condensing zone 83. Each row of the condensing tube group 84 includes several heat exchange curved tubes 85.

[0050] The condensing box 25 is used to condense the three types of gas products, namely water vapor, oil vapor and non-condensable gas, which are separated and processed. The condensate inlet pipe 86 is a cooling source, and the inner area of ​​the condensation zone 83 forms a cooling environment. The gas products are diverted from the exhaust pipe group 24 to each heat exchange curved pipe 85. At the same time, each heat exchange curved pipe 85 is arranged in a curved zigzag shape, which fully maintains the contact between the gas products and the internal environment of the condensation zone 83, so that the gas products continue to release heat. During the heat release process, water vapor and oil vapor react and liquefy, and the non-condensable gas continues to maintain a gas state, and then the gas and liquid are separated. At the same time, the water liquid and the oil liquid are prone to stratification during the movement of the curved pipeline, thereby initially forming a water-oil separation; this is beneficial to the subsequent workstation to separate the three elements of gas, oil and water.

[0051] Step 1: Open the valve at the feed hopper 15, use a conveyor belt to convey the oily sludge into the feed hopper 15, and let it fall along the hopper body 51 of the feed hopper 15 into the pyrolysis closed tube 13;

[0052] Step 2: Start the driving chassis 14, which drives the turning roller 18 to move. The speed of the turning roller 18 is set to 100 rpm, and the oily sludge is slowly guided to the rear of the inner cavity of the pyrolysis closed tube 13; at the same time, start the heating element 23, so that the heating element 23 heats the heat conduction element 22, thereby heating the entire pyrolysis closed tube 13, and the initial heating temperature is set to 350°C for the scattered parts;

[0053] Step 3: After all the pyrolysis amount of the oily sludge is injected, the valve at the feed hopper 15 is closed, and the turning roller 18 is continuously driven to compress the oily sludge and concentrate it in the inner area of ​​the guide pipe body 42;

[0054] Step 4: Increase the speed of the roller body 32 of the turning roller 18, set the speed of the turning roller 18 to 250 rpm of the condensing box, control the heating element 23 to continuously supply heat, and increase the heating temperature of the heat transfer element 22 to 500°C, so that the heavy oil begins to be thermally cracked, and the thermal decomposition continues for 3 hours;

[0055] Step 5: Stop the movement of the turning roller 18, open the exhaust pipe group 24, extract the air flow in the pyrolysis closed tube 13, and lead out the gas mixture of oil, water and non-condensable gas.

[0056] Step 6: After the extraction is completed, the valve in the outlet pipe 16 is opened, and the turning roller 18 is started to discharge the solid coke through the outlet pipe 16 for collection.

[0057] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0058] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A pyrolysis treatment device for oily sludge, comprising a device platform (11), wherein a pyrolysis box (12) and a drive box (14) are mounted on the device platform (11); characterized in that: The pyrolysis box (12) is provided with a pyrolysis closed tube (13), the top of the box body of the pyrolysis box (12) is externally connected to a feed hopper (15), the bottom end of the feed hopper (15) is connected to the pyrolysis closed tube (13), and the output end of the pyrolysis closed tube (13) is provided with an outlet pipe (16); The driving chassis (14) is provided with a driving connection box (17), the inner cavity of the pyrolysis closed tube (13) is provided with a material turning roller (18), the power input end of the material turning roller (18) is connected to the driving connection box (17), and the end of the material turning roller (18) extends into the outlet tube (16); The pyrolysis box (12) is further provided with an inner box support (21), a plurality of heating components (23) are installed in the inner box support (21), a plurality of heat conducting components (22) are sleeved on the outer wall of the pyrolysis closed tube (13), and the heat conducting components (22) are butted against the heating components (23) in a one-to-one manner; The pyrolysis closed tube (13) is externally connected to an exhaust pipe group (24); a condensing box (25) is provided on the outer box wall of the pyrolysis box (12); and the pipe end of the exhaust pipe group (24) is connected to the condensing box (25); The turning roller (18) comprises a roller body (32) and a roller shaft (31) arranged at a driving end of the roller body (32); the roller body (32) is provided with an auxiliary spiral auger (33), a dispersing member (35), a diffusion spiral member (36) and a main spiral auger (34); the auxiliary spiral auger (33) is located in a tube area of ​​the guide tube body (42), and the main spiral auger (34) is located in a tube area of ​​the heating tank body (41); The dispersing member (35) is arranged behind the auxiliary spiral auger (33) and at the bottom of the discharge valve port (52), and the dispersing member (35) comprises a plurality of groups of cutting claw blocks (37), and each group of cutting claw blocks (37) is arranged in an equidistant annular pattern; The diffusion spiral member (36) is located between the dispersing member (35) and the main spiral auger (34), and the diffusion spiral member (36) comprises a plurality of rows of hook-shaped blocks (38), and each row of hook-shaped blocks (38) is arranged in a spiral along the roller surface of the roller body (32); A support mounting frame (61) is disposed inside the inner box bracket (21); the heating element (23) comprises a heating machine (62) disposed on the heating machine (62), a heating component (63) disposed inside the heating machine (62), and a heat-conducting pipe (64) installed at an air outlet of the heating component (63); the heating machine (62) is externally connected to an air supply duct (65); The heat conducting member (22) comprises an annular heat conducting frame (71), which is an annular structure and is sleeved on the periphery of the guide pipe body (42); a heat flow inlet (72) is provided on the annular heat conducting frame (71); the heat conducting pipe (64) is connected to the inner cavity of the annular heat conducting frame (71) through the heat flow inlet (72); a heat flow guide bar (74) is provided on the inner wall of the annular heat conducting frame (71); a plurality of heat flow guide grooves (75) are provided on the inner surface of the heat flow guide bar (74); and a heat conduction zone (76) is formed in the heat flow guide grooves (75); The heat conducting member (22) further comprises a heat absorbing member (77) sleeved on the outer wall of the guide tube body (42); the heat absorbing member (77) is located in the corresponding annular heat conducting frame (71) and a heat conducting inner ring (78) is provided between the heat absorbing member (77) and the tube wall of the heating tank body (41); The condensing box (25) comprises a box body (82) and a plurality of rows of condensing tube groups (84) arranged in the box body (82); the box body (82) is fixed to the outer box wall of the pyrolysis box (12) through a fixing plate (81); the inner cavity of the box body (82) is provided with a condensing zone (83); the condensing zone (83) is externally connected to a condensate inlet pipe (86); the condensing tube group (84) is arranged in the condensing zone (83); and each row of the condensing tube group (84) comprises a plurality of heat exchange curved tubes (85).

2. The oily sludge pyrolysis treatment equipment according to claim 1, characterized in that: The pyrolysis closed tube (13) comprises a heating tank body (41) and a guide tube body (42), the heating tank body (41) and the guide tube body (42) being connected to form an integrated structure via a first tube body connecting sleeve (48), the drive connecting box (17) comprising a drive end docking box (43) and a closed frame (44) arranged on the periphery of the drive end docking box (43), the box body of the pyrolysis box (12) is provided with a box body outer support frame (47), the closed frame (44) is installed in the box body outer support frame (47) via an inner connecting sleeve (46), the other end of the guide tube body (42) and the inner connecting sleeve (46) are connected to form an integrated structure via an inner connecting frame (45), and the other end of the heating tank body (41) and the outlet pipe (16) are connected to form an integrated structure via a second tube body connecting sleeve (49).

3. The oily sludge pyrolysis treatment equipment according to claim 2, characterized in that: The feed hopper (15) comprises a hopper body (51) and a discharge valve port (52) arranged at the bottom of the hopper body (51); the discharge valve port (52) is communicated with the inner cavity of the guide tube body (42).

4. The implementation method of the oily sludge pyrolysis treatment equipment according to any one of claims 1 to 3, characterized in that: The steps include: Step 1: Open the valve at the feed hopper (15), use a conveyor belt to convey the oily sludge into the feed hopper (15), and let it fall along the feed hopper (15) into the pyrolysis closed tube (13); Step 2: Start the driving chassis (14), and the driving chassis (14) drives the material turning roller (18) to move, and the rotation speed of the material turning roller (18) is set to 100 revolutions per minute, so as to slowly guide the oily sludge to the rear of the inner cavity of the pyrolysis closed tube (13); at the same time, start the heating element (23), so that the heating element (23) supplies heat to the heat conduction element (22), thereby heating the entire pyrolysis closed tube (13), and the initial heating temperature is set to 350° C.; Step 3: After all the pyrolysis amount of the oily sludge is injected, the valve at the feed hopper (15) is closed, and the turning roller (18) is continuously driven to compress the oily sludge and concentrate it in the heating area of ​​the pyrolysis closed tube (13); Step 4: increasing the rotation speed of the roller body (32) of the turning roller (18), setting the rotation speed of the turning roller (18) to 250 revolutions per minute, controlling the heating element (23) to continuously supply heat, and raising the heating temperature of the heat transfer element (22) to 500° C., so that the heavy oil begins to be thermally cracked, and the thermal decomposition continues for 3 hours; Step 5: Stop the movement of the turning roller (18), open the exhaust pipe group (24), extract the air flow in the pyrolysis closed tube (13), and draw out the gas mixture of oil, water and non-condensable gas. Step 6: After the extraction is completed, the valve in the outlet pipe (16) is opened, and the turning roller (18) is started to discharge the solid coke through the outlet pipe (16) for collection.

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