Skid-mounted oil sludge pyrolysis unit

Abstract

The present invention relates to the field of organic waste treatment and utilization, and specifically to a skid-mounted oil sludge pyrolysis device, which includes a skid-mounted furnace body, a rotary pyrolysis mechanism, multiple groups of radiation heating mechanisms and a furnace bottom slag cleaning mechanism. The skid-mounted furnace body is a stepped box-type structure and includes a feed section, a climbing section and a discharge section connected in sequence. The feed section and the discharge section are both arranged horizontally, and the height of the feed section is lower than that of the discharge section. The rotary pyrolysis mechanism is arranged in the furnace and extends from the feed section to the discharge section in a shape that is compatible with the skid-mounted furnace body. Multiple groups of the radiation heating mechanisms are spaced apart near the rotary pyrolysis mechanism. The furnace bottom sludge cleaning mechanism is arranged below the rotary pyrolysis mechanism and extends from the feed section to the discharge section in a shape that is compatible with the skid-mounted furnace body. The above-mentioned device structure has a high degree of automation, is convenient for on-site disassembly and serial assembly, and can effectively ensure the efficient pyrolysis of a large amount of organic solid waste that is prone to coking, such as oil sludge.

Description

Technical Field

[0001] The present invention relates to the field of organic waste treatment and utilization, and in particular to a skid-mounted oil sludge pyrolysis device. Background Art

[0002] Organic solid wastes such as sludge and oily sludge are large amounts of organic waste generated in production and life. They have complex compositions, usually high water content, high oil content and contain a large number of harmful components. They also have resource and environmental hazards. Therefore, it is necessary to develop efficient methods for the treatment and utilization of such solid wastes to achieve harmless treatment while effectively recovering the available resources in their components. Traditional methods mainly use incineration and sanitary landfill to dispose of organic solid wastes such as sludge and oily sludge. Their resource output rate is low and there is a risk of secondary pollution. The pyrolysis method heats the organic solid waste under anaerobic or anoxic conditions, and thermally decomposes its organic components, and then condenses the pyrolysis volatiles to finally obtain a condensable oil-water mixture, non-condensable gas and solid residue. Due to its many advantages such as high resource recovery rate, simple, efficient and thorough treatment, and less secondary pollution, it has gradually become the mainstream organic solid waste treatment technology today.

[0003] In the process of developing organic solid waste pyrolysis technology, the key is the development of stable and efficient pyrolysis equipment. For materials such as sludge and oil sludge that are highly viscous and easy to coke, it is very easy for such materials to coke and adhere to the wall of the pyrolysis device during the use of traditional rotary kiln or moving bed pyrolysis devices, thereby affecting the heat transfer efficiency of the pyrolysis device or the operation of the moving parts, and further leading to a decrease in the stability and efficiency of the pyrolysis device. In recent years, chain-plate pyrolysis devices have attracted widespread attention because the heating wall does not contact the material, is not easy to coke, and has high pyrolysis efficiency. For example, the Chinese patent application with application number 202121574642.4 proposes a clustered distributed static rotary pyrolysis device, which increases the residence time of the material in the furnace by arranging multiple layers of chain plates and radiation heating tubes in the pyrolysis furnace, thereby ensuring the pyrolysis effect. However, the multi-layer chain plate structure is difficult to process and install, and the pyrolysis reactor is high, which is not convenient for transportation. Chinese patent application number 202211727532.6 also describes a multi-layer chain plate pyrolysis device for oil sludge. To ensure stable material transport between the two chains, additional components such as transfer rollers are added. This complex structure makes the pyrolysis device inconvenient to process and transport. Furthermore, non-skid-mounted pyrolysis devices are difficult to scale and have limited processing capacity.

[0004] In reality, the vast majority of sludge currently in need of disposal is concentrated in oil fields and oil sludge refineries. Oil fields are generally located in remote areas, making transportation difficult. Furthermore, the amount of sludge required for disposal varies significantly from one oil field to another, requiring pyrolysis equipment with a high load adjustment capacity and ease of installation and transportation. Therefore, there is an urgent need to address the shortcomings of existing non-skid-mounted pyrolysis equipment, such as their complex structure, inconvenient processing and transportation, and narrow adjustment range of processing capacity. Summary of the Invention

[0005] (1) Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a skid-mounted oil sludge pyrolysis device to solve the problems of the existing equipment such as complex structure and narrow adjustment range of processing capacity.

[0007] (2) Technical solution

[0008] In order to achieve the above-mentioned object, the skid-mounted oil sludge pyrolysis device of the present invention comprises:

[0009] The skid-mounted furnace body is a stepped box-type structure and includes a feed section, a climbing section, and a discharge section connected in sequence. The feed section and the discharge section are both horizontally arranged, the height of the feed section is lower than that of the discharge section, and the climbing section is inclined. A furnace is formed in the skid-mounted furnace body, and the skid-mounted furnace body is also provided with a feed port, an air outlet, and a discharge port connected to the furnace;

[0010] a rotary pyrolysis mechanism, the rotary pyrolysis mechanism being arranged in the furnace and extending from the feed section to the discharge section in a shape compatible with the skid-mounted furnace body, the feed inlet being located above the feed end of the rotary pyrolysis mechanism, and the gas outlet being located above the discharge end of the rotary pyrolysis mechanism;

[0011] Multiple groups of radiation heating mechanisms, wherein the multiple groups of radiation heating mechanisms are spaced apart and close to the rotary pyrolysis mechanism;

[0012] The furnace bottom slag cleaning mechanism is arranged below the rotary pyrolysis mechanism and extends from the feed section to the discharge section in a shape compatible with the skid-mounted furnace body. The discharge port is located below the discharge end of the furnace bottom slag cleaning mechanism. The furnace bottom slag cleaning mechanism can push the slag on the furnace bottom into the discharge port.

[0013] Optionally, the rotary pyrolysis mechanism includes a support wheel, a transmission wheel, a chain, a plurality of support guide rails and a plurality of material receiving plates that can be spliced in sequence. The chain is provided on the outer side of the support wheel and the transmission wheel and is transmitted by the chain. The plurality of material receiving plates are arranged on the chain in sequence for carrying materials, and the plurality of support guide rails are installed at intervals on the side wall of the furnace for supporting the chain.

[0014] Optionally, the material receiving plates each include a paving section, a bending section, and a stacking section connected in sequence, and a mudguard provided in the middle of the paving section, the paving section and the stacking section being spaced apart from each other and having a height difference; the mudguard is perpendicular to the paving section and extends in the transverse direction of the rotary pyrolysis mechanism; and a plurality of mounting holes for connecting the chain are provided at both free ends of the paving section;

[0015] When the material receiving plate moves to the top surface of the rotary pyrolysis mechanism, the material laying section can overlap above the stacking section of the adjacent material receiving plate.

[0016] Optionally, the height difference between the paving section and the stacking section is the thickness of the supporting plate.

[0017] Optionally, the support rails each include an inlet plate, a straight plate, and an outlet plate connected in sequence, and a support plate provided below the middle portion of the straight plate, and the support plate can be mounted on the side wall of the furnace;

[0018] The ends of the inlet plate and the outlet plate away from the flat plate are both inclined downward; the angle between the inlet plate and the flat plate, and the angle between the outlet plate and the flat plate are both 150° to 175°.

[0019] Optionally, the furnace bottom slag cleaning mechanism includes a driven wheel, a driving wheel, a transmission chain, multiple scraping plates and multiple support rails; the driven wheel and the driving wheel are sleeved with the transmission chain on the outside and transmitted by the transmission chain, the scraping plates are arranged at intervals on the chain for cleaning the slag on the furnace bottom, and the multiple support rails are installed at intervals on the side wall of the furnace to support the transmission chain.

[0020] Optionally, the interior of the skid-mounted furnace body is further provided with a heat-insulating layer and a plurality of reflective plates stacked and intersecting and wrapping the heat-insulating layer.

[0021] Optionally, expansion joints are further provided at the connections between the feeding section and the climbing section, and between the climbing section and the discharging section of the skid-mounted furnace body.

[0022] Optionally, a heat-insulating wall is provided between the feed port and the radiation heating mechanism, the top end of the heat-insulating wall is connected to the top surface of the furnace, and the bottom end height of the heat-insulating wall is lower than the lowest height of the adjacent radiation heating mechanism.

[0023] Optionally, the end surface of the feed section of the skid-mounted furnace body is provided with a feed cleaning door; the end surface of the discharge section of the skid-mounted furnace body is provided with a discharge cleaning door;

[0024] An inclined guide plate is provided in the discharge section of the skid-mounted furnace body, the upper end of the guide plate is connected to the side wall of the furnace below the discharge cleaning door, and the lower end of the guide plate is connected to the discharge port.

[0025] (3) Beneficial effects

[0026] When the skid-mounted sludge pyrolysis device performs pyrolysis on the sludge, the material falls from the feed port onto the receiving plate of the rotary pyrolysis mechanism, and the receiving plate drives the material from the feed end to the discharge end ( Figure 1 During the movement, the material is continuously heated by the radiation heating mechanism above and below the material receiving plate, thereby decomposing the organic components in the material. The volatile matter produced by pyrolysis is discharged from the air outlet on the right side of the top of the discharge section of the skid-mounted furnace body. The sludge after pyrolysis is discharged from the discharge port on the lower right side of the rotary pyrolysis mechanism. The small amount of sludge that misses the bottom of the furnace is sent to the discharge port through the slag cleaning mechanism at the bottom of the furnace for discharge.

[0027] The above technical solution also has the following beneficial effects:

[0028] 1. The structure of the supporting plate of the furnace body and the rotary pyrolysis mechanism has been optimized. Compared with the traditional box-type or multi-layer rectangular box-type pyrolysis furnace, the above technical solution designs an integrated special-shaped box-type pyrolysis furnace and divides it into a feed section, a climbing section and a discharge section connected in sequence. The climbing section makes the feed and discharge not on the same horizontal plane, and the discharge section is higher than the feed section. When the processing capacity of the equipment needs to be increased, the feed and discharge ports of multiple identical devices can be connected end to end for skid-mounted connection (that is, the discharge port of the previous device is connected to the feed port of the next device) to increase the material movement speed in a single furnace without reducing the total pyrolysis time of the material, ensuring the pyrolysis effect, thereby achieving the purpose of increasing the material processing capacity. Moreover, in order to meet the requirements of large processing capacity, multiple identical devices can be spliced on site to facilitate production and transportation.

[0029] 2. The ingeniously designed bending structure of the support plate allows adjacent plates to overlap and overlap, preventing gaps and leaks. More importantly, the support plate is designed with a mudguard. First, it prevents the material from sliding down due to gravity during the climbing process. Second, the mudguard increases the heated surface area and directly contacts the material, enhancing the heat transfer effect. Third, the mudguard intersects the support plate at right angles, strengthening the mechanical strength of the support plate and effectively reducing the degree of mechanical damage such as bending and deformation caused by external forces such as oil sludge gravity or thermal stress.

[0030] 3. The design of the feed port has been improved. By designing a heat insulation wall on the right side of the feed port, the radiation heating mechanism is prevented from heating the feed port, thereby preventing the sludge from heating up, decomposing and coking at the feed port, ensuring smooth feeding of materials.

[0031] 4. The stacked reflective plates are cleverly designed. First, the reflective plates are stacked, allowing the plates to expand freely to avoid deformation caused by excessive thermal stress. Second, the reflective plates are wrapped with an insulation layer to prevent direct contact between the insulation material and the pyrolysis gas, thus preventing the pyrolysis gas from corroding the insulation material. Third, the reflective plates reflect the heat radiation from the radiation heating mechanism, thus preventing the radiation heating mechanism from heating the walls of the furnace and reducing heat loss. At the same time, the reflected heat radiation can heat the material, enhancing the heating effect of the material.

[0032] 5. The above-mentioned device has an ingenious structural design, is easy to operate, runs stably, is convenient to clean and maintain, and has a high degree of automation. It is convenient to disassemble and assemble in series on site, and can effectively ensure the efficient pyrolysis of large amounts of organic solid waste that is prone to coking, such as oil sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic structural diagram of the skid-mounted oil sludge pyrolysis device of the present invention;

[0034] Figure 2 for Figure 1 Schematic diagram of the enlarged structure at A in FIG;

[0035] Figure 3 for Figure 1 An enlarged structural diagram of the material receiving plate in FIG.

[0036] Figure 4 for Figure 1 An enlarged structural diagram of the support rail in FIG.

[0037] Figure 5 for Figure 1 Schematic diagram of the enlarged structure of the reflector.

[0038] [Description of Reference Numerals]

[0039] 1: Skid-mounted furnace body; 2: Rotary pyrolysis mechanism; 3: Radiant heating mechanism; 4: Furnace bottom slag cleaning mechanism; 11: Feed inlet; 12: Feed cleaning door; 13: Air outlet; 14: Discharge cleaning door; 15: Guide plate; 16: Discharge port; 17: Insulation wall; 18: Reflector; 19: Expansion joint;

[0040] 21: Support wheel; 22: Chain; 23: Material receiving plate; 231: Paving section; 232: Bending section; 233: Laminating section; 234: Mudguard; 235: Mounting hole; 24: Support guide rail; 241: Inlet plate; 242: Straight plate; 243: Outlet plate; 244: Support plate; 25: Transmission wheel; 41: Driven wheel; 42: Transmission chain; 43: Scraper plate; 44: Support rail; 45: Driving wheel. DETAILED DESCRIPTION

[0041] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0042] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0043] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0044] In the present invention, unless otherwise specified or limited, the terms "connect," "fix," etc. should be understood in a broad sense. For example, "fix" can mean fixed connection, detachable connection, or integration; "connection" can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0045] See also Figure 1 The present invention provides a skid-mounted oil sludge pyrolysis device, which includes a skid-mounted furnace body 1, a rotary pyrolysis mechanism 2, multiple groups of radiation heating mechanisms 3 and a furnace bottom slag cleaning mechanism 4.

[0046] The skid-mounted furnace body 1 is a stepped box-type structure and includes a feed section, a climbing section, and a discharge section connected in sequence. The feed section and the discharge section are both arranged horizontally, the height of the feed section is lower than the discharge section, and the climbing section is inclined, that is, the feed section is horizontal at the bottom, the discharge section is centered and inclined and climbs, and the discharge section is horizontal at the top. A furnace is formed in the skid-mounted furnace body 1, and the skid-mounted furnace body 1 is also provided with a feed port 11, an air outlet 13, and a discharge port 16 connected to the furnace. The rotary pyrolysis mechanism 2 is arranged in the furnace and extends from the feed section to the discharge section in a shape compatible with the skid-mounted furnace body 1, that is, the bending and extension direction of the rotary pyrolysis mechanism 2 is substantially synchronized with the bending and extension direction of the skid-mounted furnace body 1. The feed port 11 is located above the feed end of the rotary pyrolysis mechanism 2, and the air outlet 13 is located above the discharge end of the rotary pyrolysis mechanism 2.

[0047] Multiple groups of radiant heating mechanisms 3 are spaced apart near the rotary pyrolysis mechanism 2, specifically above the rotary pyrolysis mechanism 2 and within the rotary cavity of the rotary pyrolysis mechanism 2. The radiant heating mechanisms 3 are configured as a plurality of evenly spaced radiant heat pipes, each of which is provided with an electric heating wire or high-temperature flue gas as a heat source. The heat source heats the furnace chamber to 300-700°C by radiation from the outer surface of the pipe. For example, high-temperature flue gas at 600-900°C can be introduced into the radiant tube, and the furnace chamber is heated to the desired pyrolysis temperature by adjusting the flue gas flow rate.

[0048] The furnace bottom slag cleaning mechanism 4 is arranged below the rotary pyrolysis mechanism 2 and extends from the feed section to the discharge section in a shape that matches the skid-mounted furnace body 1. That is, the bending and extension direction of the furnace bottom slag cleaning mechanism 4 is substantially synchronized with the bending and extension direction of the skid-mounted furnace body 1. The discharge port 16 is located below the discharge end of the furnace bottom slag cleaning mechanism 4. The furnace bottom slag cleaning mechanism 4 is capable of pushing the slag on the furnace bottom into the discharge port 16. The furnace bottom slag cleaning mechanism 4 can be a slag scraper chain plate, which can be equipped with multiple scrapers or brushes to scrape the slag from the furnace bottom and transfer it to the discharge port 16.

[0049] The skid-mounted sludge pyrolysis device performs pyrolysis on the sludge. The material falls from the feed port 11 onto the receiving plate 23 of the rotary pyrolysis mechanism 2. The receiving plate 23 drives the material from the feed end to the discharge end ( Figure 1 During the movement, the material is continuously heated by the radiation heating mechanism 3 above and below the material receiving plate 23, so that the organic components in the material are decomposed, and the volatile matter produced by pyrolysis is discharged from the air outlet 13 on the right side of the top of the discharge section of the skid-mounted furnace body 1, and the sludge after pyrolysis is discharged from the discharge port 16 on the lower right side of the rotary pyrolysis mechanism 2. The small amount of sludge that misses the bottom of the furnace is sent to the discharge port 16 through the slag cleaning mechanism 4 at the bottom of the furnace for discharge.

[0050] The above technical solution optimizes the structure of the skid-mounted furnace body 1 and the rotary pyrolysis mechanism 2. Compared with the traditional box-type or multi-layer rectangular box-type pyrolysis furnace, the above technical solution designs an integrated special-shaped box-type pyrolysis furnace and divides it into a feed section, a climbing section and a discharge section connected in sequence. The climbing section makes the feed and discharge not on the same horizontal plane, and the discharge section is higher than the feed section. When the processing capacity of the equipment needs to be increased, multiple identical equipment inlets and outlets can be connected end to end for skid-mounted connection (i.e., the discharge port 16 of the previous equipment is connected to the feed port 11 of the next equipment) to increase the speed of material movement in a single furnace, but without reducing the total pyrolysis time of the material, ensuring the pyrolysis effect, thereby achieving the purpose of increasing the material processing capacity. Moreover, in order to meet the requirements of large processing capacity, multiple identical equipment can be spliced on site to facilitate production and transportation.

[0051] In a preferred embodiment, Figure 1 and Figure 2As shown, the rotary pyrolysis mechanism 2 includes a support wheel 21, a transmission wheel 25, a chain 22, multiple support rails 24, and multiple material receiving plates 23 that can be sequentially spliced. The support wheel 21 can be preferably arranged below and to the left of the feed port 11, and the transmission wheel 25 can be preferably arranged above and to the left of the discharge port 16. The support wheel 21 and the transmission wheel 25 are sheathed with a chain 22 and driven by the chain 22. Multiple material receiving plates 23 are sequentially arranged on the chain 22 for carrying materials. Multiple support rails 24 are installed at intervals on the side walls of the furnace to support the chain 22. The positions of the multiple support rails 24 are adapted to the shape of the skid-mounted furnace body 1, so that the movement path of the chain 22 also adapts to the shape of the skid-mounted furnace body 1. In conjunction with the multiple spliced material receiving plates 23, the pyrolysis process can be completed while transporting materials located at a lower location to a higher location. At the same time, the support rail 24 can also tension the chain 22 to reduce shaking during material transmission and keep the equipment running smoothly.

[0052] Furthermore, if Figure 3 As shown, the material receiving plate 23 preferably includes a paving section 231, a bending section 232 and a stacking section 233 connected in sequence, and a mudguard 234 arranged on the middle part of the paving section 231. The paving section 231 and the stacking section 233 are spaced apart from each other and have a height difference; the mudguard 234 is perpendicular to the paving section 231 and extends laterally along the rotary pyrolysis mechanism 2. Because the chains 22 are preferably arranged in pairs, the two free ends of the paving section 231 are provided with a plurality of mounting holes 235 for connecting the chains 22, and the two ends of each material receiving plate 23 are mounted and supported by a pair of chains 22. When the material receiving plate 23 moves to the top surface of the rotary pyrolysis mechanism 2, the paving section 231 can overlap above the stacking section 233 of the adjacent material receiving plate 23. When in Figure 3 In the illustrated state, the paving section 231 is spaced to the left of the stacking section 233 and is positioned higher than the stacking section 233. Therefore, the upper end of the bent section 232 connecting the paving section 231 and the stacking section 233 is tilted to the left, and the lower end is tilted to the right. In a more preferred embodiment, the height difference between the paving section 231 and the stacking section 233 is equal to the thickness of the receiving plate 23. This ensures that the top surfaces of the two receiving plates 23 are flush when they intersect, thereby facilitating material transportation.

[0053] In the preferred embodiment, the ingeniously designed bending structure of the support plates 23 allows adjacent support plates 23 to overlap and overlap, preventing gaps and leaks. More importantly, the support plates 23 are designed with mudguards 234. First, they prevent the material from sliding down due to gravity during the climbing process; second, they increase the heated surface area and directly contact the material, enhancing the heat transfer effect; and third, the mudguards 234 intersect the support plates 23 at right angles, strengthening the mechanical strength of the support plates 23 and effectively reducing the degree of mechanical damage such as bending and deformation of the support plates 23 caused by external forces such as oil sludge gravity or thermal stress.

[0054] like Figure 4 As shown, the support rails 24 each include an inlet plate 241, a straight plate 242, and an outlet plate 243, which are connected in sequence, and a support plate 244 positioned below the center of the straight plate 242. The support plate 244 can be mounted on the sidewall of the furnace. The ends of the inlet plate 241 and the outlet plate 243, which are away from the straight plate 242, are both tilted downward. The angles between the inlet plate 241 and the straight plate 242, and between the outlet plate 243 and the straight plate 242, are both 150° to 175°, preferably 165°. When supporting the chain 22, the free ends of the inlet plate 241 and the outlet plate 243 are positioned away from the chain 22, aligning with the downward tendency of the chain 22 under gravity, thereby not interfering with the movement of the chain 22 on the support rails 24. Moreover, considering that the chains 22 will be arranged in pairs, the support rails 24 are preferably also arranged in pairs and symmetrically on the opposite side walls in the furnace, so that the material receiving plate 23 for transporting materials will not tilt toward one end (i.e., the horizontal direction of the rotary pyrolysis mechanism 2) during the movement.

[0055] Also, see again Figure 1 and Figure 2 The furnace bottom slag cleaning mechanism 4 includes a driven wheel 41, a driving wheel 45, a transmission chain 42, multiple scraping plates 43, and multiple support rails 44. The driven wheel 41 can be arranged at the lower left corner of the furnace chamber surrounded by the skid-mounted furnace body 1, and the driving wheel 45 can be arranged at the lower right corner of the skid-mounted furnace body 1 and near the left side of the discharge port 16. The driven wheel 41 and the driving wheel 45 are sheathed with a transmission chain 42 and driven by the transmission chain 42. The scraping plates 43 are arranged at intervals on the chain 22 to clean the slag on the furnace bottom. The multiple support rails 44 are installed at intervals on the side walls of the furnace chamber to support the transmission chain 42. The positions of the multiple support rails 44 are adapted to the shape of the skid-mounted furnace body 1, so that the movement path of the transmission chain 42 also adapts to the shape of the skid-mounted furnace body 1. In combination with the multiple scraping plates 43, the slag located at a low position can be transported to a higher position and discharged from the discharge port 16.

[0056] In a preferred embodiment, Figure 5As shown, the interior of the skid-mounted furnace body 1 is also provided with an insulation layer and a plurality of stacked and intersecting reflective plates 18 wrapped around the insulation layer. The reflective plates 18 can be fixed by a plurality of right-angle bolts fixed to the skid-mounted furnace body 1 and pre-buried in the insulation layer. Due to the ingenious design of the stacked reflective plates 18, the first reflective plates 18 are stacked, allowing for free expansion between the plates, thus preventing deformation caused by excessive thermal stress; the second reflective plates 18 wrap around the insulation layer, thus preventing direct contact between the insulation material and the pyrolysis gas, thus preventing pyrolysis gas from corroding the insulation material; and the third reflective plates 18 reflect the heat radiation from the radiant heating mechanism 3, thereby preventing the radiant heating mechanism 3 from heating the walls of the furnace, reducing heat loss. At the same time, the reflected heat radiation can heat the material, thereby enhancing the material heating effect.

[0057] Also, see again Figure 1 Expansion joints 19 are also provided at the connections between the feeding section and the climbing section, as well as between the climbing section and the discharging section of the skid-mounted furnace body 1. The structure and principle of the expansion joints 19 are known technologies. The expansion joints 19 can eliminate the temperature stress caused by temperature changes, making the connections at each stage more reliable.

[0058] An insulating wall 17 is provided between the feed port 11 and the radiant heating mechanism 3. The top of the insulating wall 17 is connected to the top surface of the furnace, and the bottom of the insulating wall 17 is lower than the lowest height of the adjacent radiant heating mechanism 3, preventing the radiant heating mechanism 3 from directly heating the feed port 11. By improving the design of the feed port 11 and placing the insulating wall 17 on the right side of the feed port 11, the radiant heating mechanism 3 is prevented from heating the feed port 11, thereby preventing the sludge from heating up, decomposing, and coking at the feed port, thereby ensuring smooth feeding of materials.

[0059] Furthermore, if Figure 1 As shown, the end face of the feed section of the skid-mounted furnace body 1 is provided with a feed cleaning door 12, and the end face of the discharge section of the skid-mounted furnace body 1 is provided with a discharge cleaning door 14. The feed cleaning door 12 and the discharge cleaning door 14 are respectively hinged to the skid-mounted furnace body 1. During maintenance, maintenance personnel can open the door bodies to enter the interior of the furnace. An inclined guide plate 15 is provided in the discharge section of the skid-mounted furnace body 1. The upper end of the guide plate 15 is connected to the side wall of the furnace below the discharge cleaning door 14, and the lower end of the guide plate 15 is connected to the discharge port 16. The acute angle between the guide plate 15 and the furnace bottom can be 45° to 75° to prevent solid materials from staying in the dead corner of the furnace bottom and to allow materials that fall onto the discharge cleaning door 14 to smoothly enter the discharge port 16.

[0060] The skid-mounted oil sludge pyrolysis device of the present invention has an ingenious structural design, is easy to operate, runs stably, is convenient to clean and maintain, has a high degree of automation, is convenient to disassemble and assemble in series on site, and can effectively ensure the efficient pyrolysis of large amounts of oil sludge and other easily coked organic solid wastes.

[0061] It should be understood that the above description of the specific embodiments of the present invention is merely for the purpose of illustrating the technical approach and features of the present invention. Its purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. However, the present invention is not limited to the above-described specific embodiments. Any changes or modifications made within the scope of the claims of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A skid-mounted sludge pyrolysis device, characterized in that: It includes: A skid-mounted furnace body (1), the skid-mounted furnace body (1) is a stepped box-type structure and comprises a feed section, a climbing section, and a discharge section connected in sequence, the feed section and the discharge section are both arranged horizontally, the height of the feed section is lower than that of the discharge section, the climbing section is arranged obliquely, a furnace is formed in the skid-mounted furnace body (1), and the skid-mounted furnace body (1) is further provided with a feed port (11), an air outlet (13), and a discharge port (16) connected to the furnace; A rotary pyrolysis mechanism (2), the rotary pyrolysis mechanism (2) being arranged in the furnace and extending from the feed section to the discharge section in a shape compatible with the skid-mounted furnace body (1), the feed port (11) being located above the feed end of the rotary pyrolysis mechanism (2), and the gas outlet (13) being located above the discharge end of the rotary pyrolysis mechanism (2); Multiple groups of radiation heating mechanisms (3), wherein the multiple groups of radiation heating mechanisms (3) are spaced and distributed near the rotary pyrolysis mechanism (2); A furnace bottom slag cleaning mechanism (4), the furnace bottom slag cleaning mechanism (4) being arranged below the rotary pyrolysis mechanism (2) and extending from the feed section to the discharge section in a shape compatible with the skid-mounted furnace body (1), the discharge port (16) being located below the discharge end of the furnace bottom slag cleaning mechanism (4), and the furnace bottom slag cleaning mechanism (4) being capable of pushing the slag on the furnace bottom into the discharge port (16); The rotary pyrolysis mechanism (2) comprises a support wheel (21), a transmission wheel (25), a chain (22), a plurality of support guide rails (24) and a plurality of material receiving plates (23) that can be sequentially spliced; the support wheel (21) and the transmission wheel (25) are sleeved with the chain (22) on the outside and are driven by the chain (22); a plurality of material receiving plates (23) are sequentially arranged on the chain (22) for carrying materials; a plurality of support guide rails (24) are installed at intervals on the side wall of the furnace for supporting the chain (22); The material receiving plate (23) includes a paving section (231), a bending section (232), and a stacking section (233) connected in sequence, and a fender (234) provided on the middle of the paving section (231); the paving section (231) and the stacking section (233) are spaced apart from each other and have a height difference; the fender (234) is perpendicular to the paving section (231) and extends in the transverse direction of the rotary pyrolysis mechanism (2); and a plurality of mounting holes (235) for connecting to the chain (22) are provided at both free ends of the paving section (231); When the material receiving plate (23) moves to the top surface of the rotary pyrolysis mechanism (2), the material spreading section (231) can overlap above the stacking section (233) of the adjacent material receiving plate (23); The height difference between the paving section (231) and the stacking section (233) is the thickness of the receiving plate (23); The support rails (24) each include an inlet plate (241), a straight plate (242), and an outlet plate (243) connected in sequence, and a support plate (244) disposed below the middle portion of the straight plate (242), wherein the support plate (244) can be mounted on a side wall of the furnace; The ends of the inlet plate (241) and the outlet plate (243) away from the flat plate (242) are both inclined downward; the angle between the inlet plate (241) and the flat plate (242), and the angle between the outlet plate (243) and the flat plate (242) are both 150° to 175°.

2. The skid-mounted oil sludge pyrolysis device according to claim 1, characterized in that: The furnace bottom slag cleaning mechanism (4) comprises a driven wheel (41), a driving wheel (45), a transmission chain (42), a plurality of scraping plates (43) and a plurality of support rails (44); the driven wheel (41) and the driving wheel (45) are sleeved with the transmission chain (42) on the outside and are driven by the transmission chain (42); the scraping plates (43) are arranged on the chain (22) at intervals for cleaning the slag on the furnace bottom; and the plurality of support rails (44) are installed on the side wall of the furnace at intervals for supporting the transmission chain (42).

3. The skid-mounted oil sludge pyrolysis device according to claim 1, characterized in that: The skid-mounted furnace body (1) is further provided with a heat-insulating layer and a plurality of overlapping and intersecting reflective plates (18) wrapping the heat-insulating layer.

4. The skid-mounted oil sludge pyrolysis device according to claim 1, characterized in that: Expansion joints (19) are also provided at the connections between the feed section and the climbing section, and between the climbing section and the discharge section of the skid-mounted furnace body (1).

5. The skid-mounted oil sludge pyrolysis device according to claim 1, characterized in that: A heat-insulating wall (17) is provided between the feed port (11) and the radiation heating mechanism (3), the top end of the heat-insulating wall (17) is connected to the top surface of the furnace, and the bottom end height of the heat-insulating wall (17) is lower than the lowest height of the adjacent radiation heating mechanism (3).

6. The skid-mounted oil sludge pyrolysis device according to claim 1, characterized in that: The end surface of the feed section of the skid-mounted furnace body (1) is provided with a feed cleaning door (12); the end surface of the discharge section of the skid-mounted furnace body (1) is provided with a discharge cleaning door (14); An inclined guide plate (15) is provided in the discharge section of the skid-mounted furnace body (1), the upper end of the guide plate (15) is connected to the side wall of the furnace below the discharge cleaning door (14), and the lower end of the guide plate (15) is connected to the discharge port (16).

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