Static rotary sludge pyrolysis device to inhibit coking

Abstract

The present invention relates to the field of organic waste treatment and utilization, and specifically to a static rotary sludge pyrolysis device for inhibiting coking, which includes a furnace body, a rotary pyrolysis mechanism, multiple groups of heating tubes, a mud turning mechanism and a mud paddle mechanism, wherein the mud turning mechanism includes a first elastic member, a mounting frame and a mud turning plate connected in sequence, the mud turning plate extends laterally along the rotary pyrolysis mechanism and the bottom side of the mud turning plate abuts the top surface of the rotary pyrolysis mechanism; the mud paddle mechanism includes a second elastic member, a mounting plate and a mud paddle plate connected in sequence, the number of the mud paddle plates is multiple, all of the mud paddle plates are upright and connected to the bottom surface of the mounting plate at intervals, and the lower ends of the mud paddle plates abut the top surface of the rotary pyrolysis mechanism. The above-mentioned device has an ingenious structural design, is simple and compact, easy to operate, stable in operation, convenient to clean and maintain, and has a high degree of automation, which can effectively ensure the efficient pyrolysis of organic solid wastes that are prone to coking, such as oil sludge.

Description

Technical Field

[0001] The invention relates to the field of organic waste treatment and utilization, and in particular to a static rotary sludge pyrolysis device capable of inhibiting coking. 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. At present, chain-plate pyrolysis devices mainly heat by radiation, and radiation heating is a surface heating method. If the material layer is too thick, the internal material cannot effectively receive the heat radiation, resulting in uneven heating of the material and coking. If the material layer is too thin, it will lead to a decrease in the disposal efficiency of the pyrolysis device and a decrease in the processing capacity. In addition, the rotary pyrolysis mechanism is a key component in the chain-plate pyrolysis device. However, the chain plates of the rotary pyrolysis mechanism easily become loose after expanding due to heat. The unstable operation of the chain plates also affects the overall operation effect of the chain-plate pyrolysis device. Therefore, there is an urgent need to develop a more efficient sludge pyrolysis equipment. Summary of the Invention

[0004] (1) Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a static rotary sludge pyrolysis device capable of inhibiting coking, so as to efficiently pyrolyze organic solid waste that is prone to coking.

[0006] (2) Technical solution

[0007] In order to achieve the above-mentioned object, the static rotary sludge pyrolysis device for inhibiting coking of the present invention comprises:

[0008] A furnace body, wherein a furnace chamber is formed in the furnace body, and the furnace body is further provided with a feed inlet, a pyrolysis gas outlet, and a residue outlet communicated with the furnace chamber;

[0009] A rotary pyrolysis mechanism, wherein the rotary pyrolysis mechanism is arranged in the furnace, the feed inlet is located above the first end of the rotary pyrolysis mechanism, and the pyrolysis gas outlet is located above the second end of the rotary pyrolysis mechanism;

[0010] Multiple groups of heating tubes, wherein the multiple groups of heating tubes are spaced apart and close to the rotary pyrolysis mechanism;

[0011] A mud turning mechanism, each of which includes a first elastic member, a mounting frame, and a mud turning plate connected in sequence, wherein the upper end of the first elastic member is connected to the top surface of the furnace, the mud turning plate extends laterally along the rotary pyrolysis mechanism, and the bottom side of the mud turning plate abuts the top surface of the rotary pyrolysis mechanism;

[0012] The mud paddle mechanism includes a second elastic member, a mounting plate and a mud paddle plate connected in sequence, the upper end of the second elastic member is connected to the top surface of the furnace, there are multiple mud paddle plates, all of which are upright and connected to the bottom surface of the mounting plate at intervals, and the lower ends of the mud paddle plates abut the top surface of the rotary pyrolysis mechanism.

[0013] Optionally, multiple groups of the mud turning mechanisms are spaced apart along the transmission direction of the rotary pyrolysis mechanism, and multiple groups of the mud shifting mechanisms are spaced apart along the transmission direction of the rotary pyrolysis mechanism, and the mud shifting mechanisms are located between adjacent mud turning mechanisms.

[0014] Optionally, the first elastic member includes a plurality of first springs arranged in parallel; the mounting frame includes a support plate and a pair of end plates, the lower ends of the plurality of first springs are connected to the support plate, the opposite ends of the support plate are connected to the upper ends of the end plates in a one-to-one correspondence, the opposite ends of the mud-turning plates are connected to the lower ends of the end plates in a one-to-one correspondence, and the plate surface of the mud-turning plates is perpendicular to the top surface of the rotary pyrolysis mechanism;

[0015] And / or, the height of the mud-turning plate is 10 mm to 30 mm.

[0016] Optionally, the second elastic member includes a plurality of second springs arranged in parallel, and the lower ends of the plurality of second springs are connected to the mounting plate;

[0017] The mud-moving mechanism further includes guide end plates provided at both ends of the mounting plate, the guide end plates being vertically provided and connected to the bottom surface of the mounting plate, the front ends of the guide end plates being close to the first end of the rotary pyrolysis mechanism, and the front ends of the guide end plates being inclined toward the outside of the rotary pyrolysis mechanism;

[0018] The plurality of mud-stripping plates are evenly spaced and arranged between the paired guide end plates. The cross section of the mud-stripping plates on the horizontal plane is a V-shaped cross section, and the tip of the V-shaped cross section faces the first end of the rotary pyrolysis mechanism.

[0019] Optionally, the static rotary sludge pyrolysis device further includes a slag cleaning mechanism, which is arranged below the rotary pyrolysis mechanism, and the slag outlet is located below the second end of the slag cleaning mechanism, and the slag cleaning mechanism can push the slag on the furnace bottom into the slag outlet.

[0020] Optionally, the rotary pyrolysis mechanism includes a transmission wheel, a support wheel, a chain, a plurality of chain plates that can be spliced in sequence, and baffles arranged on the two free ends of the chain plates. The transmission wheel and the support wheel are covered with the chain on the outside and transmitted by the chain. The plurality of chain plates are arranged on the chain in sequence for carrying materials.

[0021] Optionally, the chain plates each include a loading section, a bending section and an overlapping section that are sequentially connected, and the loading section and the overlapping section are spaced apart from each other and have a height difference;

[0022] A notch is formed at one end of the loading section away from the bending section, and the inclination direction of the notch is opposite to the inclination direction of the bending section;

[0023] When the chain plate moves to the top surface of the rotary pyrolysis mechanism, the material loading section can overlap above the overlapping section of the adjacent chain plate.

[0024] Optionally, a guide plate and an insulation wall are provided at one end of the feed port located in the furnace, and the insulation wall is located between the heating tube and the feed port; the guide plate is a curved guide plate or a parabolic guide plate, the upper end of the guide plate is connected to the edge of the feed port and the lower end of the guide plate extends obliquely toward one side of the insulation wall.

[0025] Optionally, an ash baffle is provided at one end of the pyrolysis gas outlet located in the furnace, and an angle between the ash baffle and the top surface of the furnace is 15° to 45°.

[0026] Optionally, the static rotary sludge pyrolysis device includes at least one of the following three schemes:

[0027] First, the furnace body includes a shell forming a box structure and a steel structure support arranged outside the shell; the shell includes an outer steel shell, an inner steel shell and an insulation layer arranged between the outer steel shell and the inner steel shell;

[0028] Second, inspection doors are provided on opposite sides of the furnace body, and the inspection doors are hinged to the furnace body;

[0029] Third, a guide groove is provided at one end of the residue outlet located outside the furnace body, the diameter of the guide groove gradually decreases along the direction of material movement, and a slag discharge spiral is provided in the guide groove.

[0030] (3) Beneficial effects

[0031] When the static rotary sludge pyrolysis device for inhibiting coking is performing pyrolysis treatment on the sludge, the material falls from the feed port onto the rotary pyrolysis mechanism, and the chain plate of the rotary pyrolysis mechanism drives the material from the first end to the second end ( Figure 1 The material moves (from left to right in the center) during movement. During this movement, the material is continuously heated by the heating tubes above and below the chain plates. Furthermore, the mud turning and stirring mechanisms above the chain plates continuously turn the material, exposing the internal sludge to heat radiation and achieving uniform heating of the material. The organic components in the material decompose, and the volatiles produced by pyrolysis are discharged through the pyrolysis gas outlet on the right side of the top of the furnace body. The sludge that has been pyrolyzed and the sludge residue that falls to the bottom of the furnace are sent to the slag discharge screw for discharge.

[0032] The above technical solution also has the following beneficial effects:

[0033] 1. The ingeniously designed mud turning and mud prying mechanisms block the material's flow, trapping the bottom material against the mud turning plate until it passes over it. This allows the bottom sludge to be turned out, preventing it from coking. The mud prying mechanism continuously guides the sludge, exposing the internal sludge, facilitating its absorption of heat radiation and enhancing heat and mass transfer. Furthermore, both the mud turning and mud prying mechanisms are equipped with elastic members to ensure they remain in close contact with the rotary pyrolysis mechanism's chain plates. First, the elastic members tension the chain plates, ensuring that when the chains expand and loosen due to heat, they remain in a tensioned state under the action of the spring tension. Second, they overcome the ups and downs of the chain drive, ensuring that the chains maintain a stable rotational motion. Third, the mud turning and mud prying mechanisms maintain close contact with the chain plates, scraping the sludge and preventing the material from coking on the high-temperature chain plates. Fourth, the rotary pyrolysis mechanism's own drive is fully utilized for coking, eliminating the need for a drive mechanism. This results in high operational stability and low processing and operating costs.

[0034] 2. The design of the furnace feed port has been improved. A guide plate and an insulation wall have been designed. The guide plate on the left side of the feed port can guide the sludge to generate a lateral velocity component to prevent the sludge from falling directly and impacting the rotary pyrolysis mechanism. The insulation wall on the right side of the feed port prevents the heating pipe from heating the feed port, thereby preventing the sludge from heating up, decomposing, and coking at the feed port, ensuring stable feeding.

[0035] 3. The pyrolysis gas outlet has been optimized. By designing an ash baffle at the pyrolysis gas outlet, fly ash generated during the discharging process of the pyrolysis-completed material is prevented from being discharged from the pyrolysis gas outlet, reducing the difficulty of subsequent disposal.

[0036] 4. Improve the design of the outer sleeve of the slag discharge spiral. By designing an inclined guide groove, it can prevent the material from directly impacting the spiral blades, thereby increasing the service life of the slag discharge spiral.

[0037] 5. The above-mentioned device has an ingenious structural design, is simple and compact, easy to operate, stable in operation, convenient to clean and maintain, and has a high degree of automation, which can effectively ensure the efficient pyrolysis of organic solid waste that is prone to coking, such as oil sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic structural diagram of a static rotary sludge pyrolysis device for inhibiting coking according to the present invention;

[0039] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of the chain plate;

[0040] Figure 3 for Figure 1 An enlarged structural diagram of the material turning mechanism in FIG.

[0041] Figure 4 for Figure 1 Schematic diagram of the enlarged structure of the material transfer mechanism.

[0042] [Description of Reference Numerals]

[0043] 1: furnace body; 2: rotary pyrolysis mechanism; 3: heating tube; 4: turning mechanism; 5: material shifting mechanism; 6: slag cleaning mechanism; 7: slag discharge spiral; 11: feed inlet; 12: pyrolysis gas outlet; 13: residue outlet; 14: inspection door; 15: shell; 16: steel structure bracket; 21: transmission wheel; 22: support wheel; 23: chain; 24: chain plate; 25: baffle; 41: mud turning plate; 42: end plate; 43: support plate; 44: first elastic member; 51: guide end plate; 52: mud shifting plate; 53: mounting plate; 54: second elastic member; 111: guide plate; 112: thermal insulation wall; 121: ash baffle; 241: loading section; 242: bending section; 243: overlapping section; 244: incision. DETAILED DESCRIPTION

[0044] 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.

[0045] 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.

[0046] 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. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this disclosure, "plurality" or "several" means at least two, such as two or three, unless otherwise specifically defined.

[0047] 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.

[0048] See also Figure 1 The present invention provides a static rotary oil sludge pyrolysis device for inhibiting coking, which includes a furnace body 1, a rotary pyrolysis mechanism 2, multiple groups of heating tubes 3, a mud turning mechanism 4, a mud stirring mechanism 5, and a slag cleaning mechanism 6. The number of the mud turning mechanism 4 and the mud stirring mechanism 5 can be one or more groups.

[0049] A furnace chamber is formed within the furnace body 1, which is also provided with a feed inlet 11, a pyrolysis gas outlet 12, and a residue outlet 13 connected to the furnace chamber. A rotary pyrolysis mechanism 2 is disposed within the furnace chamber, with the feed inlet 11 located above the first end of the rotary pyrolysis mechanism 2, and the pyrolysis gas outlet 12 located above the second end of the rotary pyrolysis mechanism 2. Multiple groups of heating tubes 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 heating tubes 3 may be radiant heating tubes.

[0050] The mud turning mechanism 4 includes a first elastic member 44, a mounting frame, and a mud turning plate 41, which are connected in sequence. The mud turning plate 41 extends transversely of the rotary pyrolysis mechanism 2. The length of the mud turning plate 41 is substantially equal to the width of the rotary pyrolysis mechanism 2. Therefore, the oil mud near the edge of the rotary pyrolysis mechanism 2 can also be turned over, achieving a more thorough turning effect. The upper end of the first elastic member 44 is connected to the top surface of the furnace. The mud turning plate 41 extends transversely of the rotary pyrolysis mechanism 2, and the bottom side of the mud turning plate 41 abuts the top surface of the rotary pyrolysis mechanism 2.

[0051] The mud paddle mechanism 5 includes a second elastic member 54, a mounting plate 53 and a mud paddle plate 52 connected in sequence. The mounting plate 53 extends in the transverse direction of the rotary pyrolysis mechanism 2. The length of the mounting plate 53 is basically equivalent to the width of the rotary pyrolysis mechanism 2. The upper end of the second elastic member 54 is connected to the top surface of the furnace. There are multiple mud paddle plates 52. All mud paddle plates 52 are upright and connected to the bottom surface of the mounting plate 53 at intervals. The lower ends of the mud paddle plates 52 abut the top surface of the rotary pyrolysis mechanism 2.

[0052] In addition, the slag cleaning mechanism 6 is arranged below the rotary pyrolysis mechanism 2, and the slag outlet 13 is located below the second end of the slag cleaning mechanism 6. The slag cleaning mechanism 6 can push the slag on the furnace bottom into the slag outlet 13. The slag cleaning mechanism 6 can be a slag scraping chain plate, and the slag scraping chain plate can be provided with multiple scrapers or multiple brushes for scraping the slag on the furnace bottom and transferring it to the slag outlet 13.

[0053] When the static rotary sludge pyrolysis device for inhibiting coking is performing pyrolysis treatment on the sludge, the material falls from the feed port 11 onto the rotary pyrolysis mechanism 2, and the chain plate 24 of the rotary pyrolysis mechanism 2 drives the material from the first end to the second end ( Figure 1 The material moves (from left to right in the figure). During this movement, the material is continuously heated by the heating tubes 3 above and below the chain plate 24. Furthermore, the mud turning mechanism 4 and mud stirring mechanism 5 above the chain plate 24 continuously turn the material, fully exposing the internal sludge to heat radiation, thereby achieving uniform heating of the material. The organic components in the material decompose, and the volatiles produced by pyrolysis are discharged through the pyrolysis gas outlet on the right side of the top of the furnace body. The sludge that has been pyrolyzed and the sludge residue that has fallen to the bottom of the furnace are sent to the residue outlet 13 and discharged.

[0054] In the above embodiment, the mud turning mechanism 4 and the mud shifting mechanism 5 are cleverly designed. By designing the mud turning mechanism 4 to block the direction of material movement, the material at the bottom is blocked by the mud turning plate 41 until it passes over the mud turning plate 41, thereby turning out the bottom sludge to prevent coking, and the mud shifting mechanism 5 continuously guides the sludge to expose the internal sludge, which is convenient for receiving heat radiation and enhancing the heat and mass transfer of the sludge. In addition, the mud turning mechanism 4 and the mud shifting mechanism 5 are both provided with elastic parts so that the two can always be close to the chain plate 24 of the rotary pyrolysis mechanism 2. First, the elastic member can tension the chain plate 24 to ensure that when the chain plate 24 expands and loosens due to heat, it always remains in a tensioned state under the action of the spring tensioning force; second, it can overcome the up and down fluctuations generated by the transmission of the chain 23, so that the chain plate 24 always maintains a stable rotational motion state; third, the mud turning mechanism 4 and the mud shifting mechanism 5 are in close contact with the chain plate 24 to scrape the oil mud, which can prevent the material from coking on the high-temperature chain plate; fourth, the self-drive of the rotary pyrolysis mechanism 2 is fully utilized for decoking, and there is no need to set up a driving mechanism, with strong operating stability and low processing and operating costs.

[0055] In a preferred embodiment, multiple groups of mud turning mechanisms 4 are spaced apart along the transmission direction of the rotary pyrolysis mechanism 2, and multiple groups of mud plucking mechanisms 5 are spaced apart along the transmission direction of the rotary pyrolysis mechanism 2, and the mud plucking mechanisms 5 are located between adjacent mud turning mechanisms 4, see Figure 1 Multiple groups of mud turning mechanisms 4 and mud stirring mechanisms 5 are spaced apart along the material moving direction, and can turn over and divert the material multiple times to ensure the turning effect and fully heat the material.

[0056] Furthermore, the mud turning mechanism 4 can be in various forms, preferably Figure 3 As shown, the first elastic member 44 may include a plurality of first springs arranged in parallel. The mounting frame includes a support plate 43 and a pair of end plates 42. The support plate 43 and the mud-turning plate 41 both extend laterally along the rotary pyrolysis mechanism 2. The lower ends of the plurality of first springs are connected to the support plate 43. The first springs are pre-compressed between the top surface of the furnace and the support plate 43. The first springs are provided with a preload force, so that the mud-turning mechanism 4 and the rotary pyrolysis mechanism 2 can always maintain close contact. The opposite ends of the support plate 43 are connected to the upper end of the end plate 42 in a one-to-one correspondence, and the opposite ends of the mud-turning plate 41 are connected to the lower end of the end plate 42 in a one-to-one correspondence. The surface of the mud-turning plate 41 is perpendicular to the top surface of the rotary pyrolysis mechanism 2. The height of the mud-turning plate 41 can be 10 mm to 30 mm, preferably 20 mm. The mounting frame is used to stably mount the mud-turning plate 41 so that the mud-turning plate 41 can always maintain a surface perpendicular to the top surface of the rotary pyrolysis mechanism 2.

[0057] In addition, the mud-moving mechanism 5 can also be in various forms, and the preferred form is as follows: Figure 4As shown, the second elastic member 54 includes a plurality of second springs arranged in parallel, the lower ends of the plurality of second springs are connected to the mounting plate 53, and the second springs are pre-compressed between the top surface of the furnace and the mounting plate 53. The second springs are provided with a preload force, so that the mud-moving mechanism 5 and the rotary pyrolysis mechanism 2 can always maintain close contact. The mud-moving mechanism 5 also includes guide end plates 51 arranged at both ends of the mounting plate 53. The guide end plates 51 are both arranged upright and connected to the bottom surface of the mounting plate 53. The front end of the guide end plate 51 is close to the first end of the rotary pyrolysis mechanism 2, the front end of the guide end plate 51 is inclined toward the outside of the rotary pyrolysis mechanism 2, and the rear end of the guide end plate 51 is inclined toward the inside of the rotary pyrolysis mechanism 2, so that the material at the edge of the rotary pyrolysis mechanism 2 can be gathered and then transmitted backward. Multiple mud paddles 52 are evenly spaced between the paired guide end plates 51. The cross section of the mud paddle 52 on the horizontal plane is a V-shaped cross section, with the tip of the V-shaped cross section facing the first end of the rotary pyrolysis mechanism 2 to reduce the resistance during material transmission.

[0058] like Figure 1 and Figure 2 As shown, in a preferred embodiment, the rotary pyrolysis mechanism 2 includes a transmission wheel 21, a support wheel 22, a chain 23, a plurality of chain plates 24 that can be spliced in sequence, and baffles 25 arranged on the two free ends of the chain plates 24. The transmission wheel 21 and the support wheel 22 are sleeved with the chain 23 on the outside and are driven by the chain 23. The plurality of chain plates 24 are arranged on the chain 23 in sequence to carry materials, and the baffles 25 can prevent the materials from falling from the edge of the rotary pyrolysis mechanism 2.

[0059] Among them, see again Figure 2 The chain plates 24 each include a loading section 241, a bending section 242 and a lap section 243 connected in sequence. The loading section 241 and the lap section 243 are spaced apart from each other and have a height difference. Figure 2In the state shown, the loading section 241 is spaced apart to the right of the overlapping section 243, and the loading section 241 is positioned higher than the overlapping section 243. Therefore, the upper end of the bending section 242 used to connect the loading section 241 and the overlapping section 243 is tilted to the right and the lower end is tilted to the left. A cutout 244 is formed at the end of the loading section 241 away from the bending section 242, and the inclination direction of the cutout 244 is opposite to the inclination direction of the bending section 242. When the chain plate 24 moves to the top surface of the rotary pyrolysis mechanism 2, the loading section 241 can overlap the upper part of the overlapping section 243 of the adjacent chain plate 24. Since the inclination direction of the cutout 244 is opposite to the inclination direction of the bending section 242, when the adjacent chain plates 24 overlap each other, a V-shaped guide seam will be formed between the cutout 244 and the bending section 242. Because the mud turning mechanism 4 and the mud prying mechanism 5 are preloaded with springs, they exert downward tension on the chain plates 24. If there were no V-shaped guide slots, when the chain plates 24 reach the overlapping position between the two chain plates 24, the mud turning mechanism 4 or the mud prying mechanism 5 might get stuck in the slots and hinder the movement of the chain plates 24. By providing the V-shaped guide slots, the chain plates 24 can pass through the V-shaped guide slots, that is, the mud turning mechanism 4 and the mud prying mechanism 5 can move out of the V-shaped guide slots along the inclined direction of the cut 24, thereby preventing them from getting stuck.

[0060] Further, in a more preferred embodiment, see again Figure 1 The feed port 11 is provided with a guide plate 111 and a heat-insulating wall 112 at one end thereof located in the furnace. The heat-insulating wall 112 is located between the heating tube 3 and the feed port 11. The guide plate 111 is a curved guide plate or a parabolic guide plate. The upper end of the guide plate 111 is connected to the edge of the feed port 11 and the lower end of the guide plate 111 extends obliquely toward the heat-insulating wall 112. The above embodiment improves the design of the feed port 11 of the furnace body 1. The guide plate 111 on the left side of the feed port 11 can be used to guide the oil sludge to generate a lateral component velocity, thereby preventing the oil sludge from directly falling and impacting the rotary pyrolysis mechanism 2. By designing the heat-insulating wall 112 on the right side of the feed port 11, the heating tube 3 is prevented from heating the feed port 11, thereby preventing the oil sludge from heating up, decomposing, and coking at the feed port 11, thereby ensuring stable feeding.

[0061] In addition, an ash shield 121 is provided at one end of the pyrolysis gas outlet 12 located within the furnace. The angle between the ash shield 121 and the top surface of the furnace is 15° to 45°, preferably 30°. In the above embodiment, the pyrolysis gas outlet 12 is optimized. By designing the ash shield 121 at the pyrolysis gas outlet 12, fly ash generated during the discharge process of the pyrolyzed material is prevented from being discharged from the pyrolysis gas outlet 12, thereby reducing the difficulty of subsequent processing.

[0062] In a preferred embodiment, see again Figure 1The furnace body 1 comprises a box-shaped shell 15 and steel support brackets 16 disposed outside the shell 15. The steel support brackets 16 are used to secure and support the shell 15, thereby enhancing the overall strength of the furnace body 1. The shell 15 comprises an outer steel shell, an inner steel shell, and an insulation layer disposed between the outer and inner steel shells, thereby improving the thermal insulation performance of the furnace body 1 and the overall thermal efficiency of the equipment. Access doors 14 are also provided on opposite sides of the furnace body 1. These access doors 14 are hinged to the furnace body 1, facilitating easy maintenance of the equipment.

[0063] Furthermore, in a preferred embodiment, a guide groove 71 is provided at one end of the slag outlet 13 located outside the furnace body 1. The diameter of the guide groove 71 gradually decreases along the direction of material movement, and a slag discharge screw 7 is provided in the guide groove 71. The inclined design of the guide groove 71 can prevent material from directly impacting the spiral blades, thereby increasing the service life of the slag discharge screw 7.

[0064] The static rotary oil sludge pyrolysis device for inhibiting coking of the present invention has an ingenious structural design, is simple and compact, is easy to operate, runs stably, is convenient to clean and maintain, and has a high degree of automation, and can effectively ensure the efficient pyrolysis of organic solid wastes prone to coking, such as oil sludge.

[0065] 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 static rotary sludge pyrolysis device for inhibiting coking, characterized in that: It includes: A furnace body (1), wherein a furnace chamber is formed in the furnace body (1), and the furnace body (1) is further provided with a feed inlet (11) communicating with the furnace chamber, a pyrolysis gas outlet (12), and a residue outlet (13); A rotary pyrolysis mechanism (2), the rotary pyrolysis mechanism (2) being arranged in the furnace, the feed port (11) being located above a first end of the rotary pyrolysis mechanism (2), and the pyrolysis gas outlet (12) being located above a second end of the rotary pyrolysis mechanism (2); Multiple groups of heating tubes (3), wherein the multiple groups of heating tubes (3) are spaced and distributed near the rotary pyrolysis mechanism (2); A mud turning mechanism (4), each of the mud turning mechanisms (4) comprising a first elastic member (44), a mounting frame, and a mud turning plate (41) connected in sequence, wherein the upper end of the first elastic member (44) is connected to the top surface of the furnace, the mud turning plate (41) extends in the transverse direction of the rotary pyrolysis mechanism (2), and the bottom side of the mud turning plate (41) abuts against the top surface of the rotary pyrolysis mechanism (2); A mud-paddle mechanism (5), each comprising a second elastic member (54), a mounting plate (53), and a mud-paddle plate (52) connected in sequence, the upper end of the second elastic member (54) being connected to the top surface of the furnace, a plurality of mud-paddle plates (52), all of which are vertically arranged and connected to the bottom surface of the mounting plate (53) at intervals, and the lower ends of the mud-paddle plates (52) abutting against the top surface of the rotary pyrolysis mechanism (2); A plurality of groups of the mud turning mechanisms (4) are spaced apart along the transmission direction of the rotary pyrolysis mechanism (2); a plurality of groups of the mud shifting mechanisms (5) are spaced apart along the transmission direction of the rotary pyrolysis mechanism (2); and the mud shifting mechanisms (5) are located between adjacent mud turning mechanisms (4); The first elastic member (44) includes a plurality of first springs arranged in parallel; the mounting frame includes a support plate (43) and a pair of end plates (42); the lower ends of the plurality of first springs are connected to the support plate (43); the opposite ends of the support plate (43) are connected to the upper ends of the end plates (42) in a one-to-one correspondence; the opposite ends of the mud-turning plate (41) are connected to the lower ends of the end plates (42) in a one-to-one correspondence; the plate surface of the mud-turning plate (41) is perpendicular to the top surface of the rotary pyrolysis mechanism (2); And / or, the height of the mud-turning plate (41) is 10 mm to 30 mm; The second elastic member (54) includes a plurality of second springs arranged in parallel, and the lower ends of the plurality of second springs are all connected to the mounting plate (53); The mud-moving mechanism (5) further comprises guide end plates (51) arranged at both ends of the mounting plate (53), the guide end plates (51) being arranged upright and connected to the bottom surface of the mounting plate (53), the front end of the guide end plate (51) being close to the first end of the rotary pyrolysis mechanism (2), and the front end of the guide end plate (51) being inclined outward from the rotary pyrolysis mechanism (2); A plurality of the mud-stripping plates (52) are evenly spaced and arranged between the paired guide end plates (51); the cross section of the mud-stripping plates (52) on the horizontal plane is a V-shaped cross section, with the tip of the V-shaped cross section facing the first end of the rotary pyrolysis mechanism (2).

2. The static rotary sludge pyrolysis device for inhibiting coking according to claim 1, characterized in that: The static rotary sludge pyrolysis device for inhibiting coking further comprises a slag cleaning mechanism (6), which is arranged below the rotary pyrolysis mechanism (2), and the slag outlet (13) is located below the second end of the slag cleaning mechanism (6). The slag cleaning mechanism (6) is capable of pushing the slag on the furnace bottom into the slag outlet (13).

3. The static rotary sludge pyrolysis device for inhibiting coking according to claim 1, characterized in that: The rotary pyrolysis mechanism (2) comprises a transmission wheel (21), a support wheel (22), a chain (23), a plurality of chain plates (24) that can be sequentially spliced together, and baffles (25) arranged on the two free ends of the chain plates (24); the transmission wheel (21) and the support wheel (22) are sleeved with the chain (23) on the outside and are driven by the chain (23); and the plurality of chain plates (24) are sequentially arranged on the chain (23) for carrying materials.

4. The static rotary sludge pyrolysis device for inhibiting coking according to claim 3, characterized in that: The chain plates (24) each comprise a loading section (241), a bending section (242), and an overlapping section (243) connected in sequence, wherein the loading section (241) and the overlapping section (243) are spaced apart from each other and have a height difference; A notch (244) is formed at one end of the loading section (241) away from the bending section (242), and the inclination direction of the notch (244) is opposite to the inclination direction of the bending section (242); When the chain plate (24) moves to the top surface of the rotary pyrolysis mechanism (2), the material loading section (241) can overlap above the overlapping section (243) of the adjacent chain plate (24).

5. The static rotary sludge pyrolysis device for inhibiting coking according to claim 1, characterized in that: A guide plate (111) and a heat-insulating wall (112) are provided at one end of the feed port (11) located in the furnace, and the heat-insulating wall (112) is located between the heating tube (3) and the feed port (11); the guide plate (111) is a curved guide plate or a parabolic guide plate, the upper end of the guide plate (111) is connected to the edge of the feed port (11) and the lower end of the guide plate (111) extends obliquely toward one side of the heat-insulating wall (112).

6. The static rotary sludge pyrolysis device for inhibiting coking according to claim 1, characterized in that: An ash baffle (121) is provided at one end of the pyrolysis gas outlet (12) located in the furnace, and an angle between the ash baffle (121) and the top surface of the furnace is 15° to 45°.

7. The static rotary sludge pyrolysis device for inhibiting coking according to claim 1, characterized in that: The static rotary sludge pyrolysis device includes at least one of the following three schemes: First, the furnace body (1) includes a shell (15) forming a box structure and a steel structure support (16) arranged outside the shell (15); the shell (15) includes an outer steel shell, an inner steel shell and an insulation layer arranged between the outer steel shell and the inner steel shell; Second, inspection doors (14) are provided on opposite sides of the furnace body (1), and the inspection doors (14) are hinged to the furnace body (1); Third, a guide groove (71) is provided at one end of the residue outlet (13) located outside the furnace body (1), the diameter of the guide groove (71) gradually decreases along the direction of material movement, and a slag discharge spiral (7) is provided in the guide groove (71).

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