Pyrolysis equipment with multiple shaftless auger kettles built in a heating furnace

Abstract

The utility model relates to solid waste pyrolysis technical field especially a kind of pyrolysis equipment of multiple shaftless screw conveyer kettle built-in in heating furnace, including furnace body and multiple reaction kettle groups installed in furnace body;Each group of the reaction kettle group includes the upper reaction kettle and lower reaction kettle of laminated distribution, and the tail end between the upper reaction kettle and lower reaction kettle is communicated with material guide pipe, wherein, the two ends between the upper reaction kettle and lower reaction kettle are all penetrated to the outside of the furnace body, in the utility model, two groups of stacked reaction kettle greatly increase production capacity, relative to ordinary single group stacked screw conveyer reaction kettle, production capacity is doubled;But heating furnace height is constant, width only increases the size of a group of reaction kettle, so as to effectively improve the production capacity of entire equipment;Second, by adopting the design of shaftless screw conveyer, the problem that screw conveyer cannot rotate due to winding material caused by shaft arranged in the middle of screw conveyer in prior art can be solved.

Description

Technical Field

[0001] This utility model relates to the field of solid waste pyrolysis technology, and in particular to a pyrolysis device with multiple shaftless screw conveyors built into a heating furnace. Background Technology

[0002] Currently, converters are the most common equipment used for the pyrolysis of general solid waste materials such as waste tires, waste plastics, circuit boards, and sludge. However, materials such as waste plastics are prone to coking and clogging of the reactor channels during hot melting and high- and medium-temperature pyrolysis, which seriously affects the normal operation of production.

[0003] Screw-type equipment is also used, but the screw in the cylinder is usually supported by bearings at both ends, and the gap between the blades and the inner wall of the cylinder is large. This can lead to coking in the gap, and the cylinder will have difficulty in heat transfer due to the accumulation of thick coke, and even serious creep and decarburization. At the same time, the central shaft of the screw is easily blocked by material, which also hinders the smooth progress of production.

[0004] Furthermore, existing screw conveyor reactors are mostly individual, stacked configurations with limited capacity, making it difficult to achieve economies of scale. Given the increasing demand for solid waste treatment, the lack of high-capacity, multi-combination pyrolysis equipment cannot meet the needs for large-scale, efficient solid waste treatment.

[0005] Therefore, there is an urgent need to design efficient and reliable pyrolysis equipment to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies, such as the fact that screw conveyors are usually supported by bearings at both ends and the gap between the blades and the inner wall of the cylinder is large, which leads to coking in the gap. The invention proposes a pyrolysis device with multiple shaftless screw conveyor kettles built into a heating furnace.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] Design a pyrolysis device with a heating furnace and multiple shaftless screw conveyor kettles, including a furnace body and multiple reaction kettle groups installed in the furnace body;

[0009] Each set of reactors includes an upper reactor and a lower reactor stacked on top of each other. A feed pipe is connected between the tail ends of the upper reactor and the lower reactor. Both ends of the upper reactor and the lower reactor extend to the outside of the furnace body. A shaftless auger is installed inside the upper reactor and the lower reactor. A drive unit is fixedly installed on the side of the upper reactor and the lower reactor. The drive unit is connected to the shaft end of the shaftless auger through a connector.

[0010] Furthermore, the top of the furnace body is connected to a flue pipe and a hot gas inlet, respectively, and a bottom crossbeam is fixedly installed inside the furnace body, with the lower reaction vessel mounted on the bottom crossbeam.

[0011] Furthermore, both the upper and lower reactors are equipped with two shaftless augers. The ends of the two opposing shaftless augers are respectively formed with connecting sleeves and plug-in ends. The connecting sleeves and plug-in ends are plugged in and locked in a circumferential manner.

[0012] Furthermore, driving components are fixedly installed at both ends of the upper and lower reaction vessels;

[0013] The driving component includes a geared motor, and an organic seal is fixedly installed at the ends of both the upper and lower reactors. The shaft end of the driving component passes through the organic seal into the interior of the upper and lower reactors.

[0014] Furthermore, the connecting component is a universal joint, and the two ends of the universal joint are respectively connected to the shaft end of the geared motor and the end of the shaftless auger.

[0015] Furthermore, the upper reactor is connected to a feed inlet at the top, and the lower reactor is connected to a slag outlet at the bottom. The two feed inlets are connected to a common feed pipe, in which a disperser is installed.

[0016] Furthermore, multiple support lifting plates are fixed on the outer circumferential surface of the shaftless auger.

[0017] Furthermore, the top of the upper reactor has a gas outlet pipe that extends through the furnace body, and a support block is fixedly connected between the upper reactor and the lower reactor.

[0018] The present invention proposes a pyrolysis device with a heating furnace incorporating multiple shaftless auger kettles, which has the following advantages:

[0019] This invention greatly increases production capacity by using two sets of stacked reactors, doubling the capacity compared to a conventional single-set stacked auger reactor; however, the height of the heating furnace remains unchanged, and the width is only increased by the size of one reactor, thus effectively improving the overall equipment capacity.

[0020] Secondly, by adopting a shaftless auger design, the problem in the existing technology that the shaft set in the middle of the auger is prone to getting tangled with material, causing the auger to be unable to rotate at all due to the tangled material, can be solved. At the same time, the shaftless auger can be connected and driven through the connecting parts, so that the shaftless auger can always stick to the bottom of the inner wall of the reactor, completely preventing the problem of coking at the bottom of the reactor. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the shaftless auger structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the feed inlet structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the connecting sleeve structure of this utility model.

[0025] In the diagram: 1. Furnace body; 11. Flue pipe; 12. Hot gas inlet; 13. Bottom crossbeam; 2. Reactor assembly; 21. Upper reactor; 211. Feed inlet; 212. Common feed pipe; 213. Disperser; 22. Lower reactor; 221. Slag outlet; 23. Feed guide pipe; 24. Shaftless auger; 241. Connecting sleeve; 242. Plug-in end; 25. Drive component; 251. Mechanical seal; 26. Connecting component; 27. Support lifting plate; 28. Gas outlet pipe; 29. ​​Support block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Reference Figures 1-4 As one embodiment of this utility model, it discloses a pyrolysis device with multiple shaftless auger kettles built into a heating furnace. Specifically, the pyrolysis device includes a furnace body 1 and multiple reaction kettle groups 2 installed in the furnace body 1. In this embodiment, two reaction kettle groups 2 are arranged at intervals on the left and right. By installing the two reaction kettle groups 2 together inside a furnace body 1, when the internal temperature of the furnace body 1 rises, the two reaction kettle groups 2 can be heated and pyrolyzed simultaneously, thus effectively improving the pyrolysis efficiency.

[0028] Each set of reactor groups 2 includes an upper reactor 21 and a lower reactor 22 stacked together. This invention greatly increases production capacity by using two sets of stacked reactors, meaning that the production capacity of a conventional single-set stacked auger reactor is doubled. However, the height of the heating furnace remains unchanged, and the width is increased by only one reactor. This greatly improves the convenience of transportation and installation without exceeding the width of the transport vehicle. A guide pipe 23 connects the tail ends of the upper reactor 21 and the lower reactor 22. Both ends of the upper reactor 21 and the lower reactor 22 extend to the outside of the furnace body 1. A shaftless auger 24 is installed inside the upper reactor 21 and the lower reactor 22. A drive unit 25 is fixedly installed on the side of the upper reactor 21 and the lower reactor 22. The drive unit 25 is connected to the shaft end of the shaftless auger 24 through a connector 26.

[0029] Specifically, by adopting the design of the shaftless auger 24, this utility model can solve the problem in the prior art where the shaft set in the middle of the auger is easy to get tangled with material, causing the auger to be unable to rotate at all due to the tangled material. At the same time, the shaftless auger 24 can be connected to the transmission through the connector 26, so that the shaftless auger 24 can always be in contact with the bottom of the inner wall of the reactor, completely preventing the problem of coking at the bottom of the reactor.

[0030] In some embodiments, the top of the furnace body 1 in this invention is connected to a flue pipe 11 and a hot gas inlet 12, respectively. A bottom crossbeam 13 is fixedly installed inside the furnace body 1, and the lower reaction vessel 22 is installed on the bottom crossbeam 13. That is, in this invention, both lower reaction vessels 22 are fixed on the bottom crossbeam 13. The bottom crossbeam 13 in this invention can be set as a frame structure, so that after installation, it can ensure that the hot gas can stably contact the bottom of the lower reaction vessel 22, thereby improving the overall heating.

[0031] Furthermore, in this utility model, both the upper reactor 21 and the lower reactor 22 are equipped with two shaftless augers 24. The ends of the two opposing shaftless augers 24 are respectively formed with connecting sleeves 241 and plug-in ends 242. The connecting sleeves 241 and the plug-in ends 242 are plugged in and fitted together and circumferentially locked. Specifically, in this embodiment, the interior of the connecting sleeves 241 can be set as a polygonal hole, and the plug-in ends 242 can be set as polygonal ends. The circumferential locking of the two shaftless augers 24 is achieved through the plugging and matching of the polygonal ends and the polygonal holes.

[0032] In other words, the shaftless auger 24 in this invention is interrupted in the middle. The interruption is connected by a connecting sleeve 241 and a plug-in end 242. Since it is not firmly welded, the shaftless auger 24 can self-adjust within a small range without hard scraping against the inner wall of the reactor, thus ensuring the stability of the conveying.

[0033] Furthermore, the conveying directions of the upper reactor 21 and the lower reactor 22 in this invention are opposite, so as to facilitate feeding and slag discharge operations on the same side.

[0034] Based on the above embodiments, in this utility model, both ends of the upper reaction vessel 21 and the lower reaction vessel 22 are fixedly installed with driving components 25;

[0035] The driving component 25 includes a geared motor. Mechanical seals 251 are fixedly installed at the ends of both the upper reactor 21 and the lower reactor 22. The shaft end of the driving component 25 passes through the mechanical seals 251 into the interior of the upper reactor 21 and the lower reactor 22. The mechanical seals 251 are either mechanical seals or packing shaft seals, primarily used to prevent fluid or gas leakage and protect the equipment from external impurities. Their specific structure is well-known to those skilled in the art and will not be elaborated upon here. In this embodiment, the use of mechanical seals 251 prevents the leakage of pyrolysis gas in the reactor, thereby improving the heating effect. Furthermore, in this embodiment, the geared motor can be configured as a servo motor driving a reducer. Accurate control of the servo motor ensures synchronous rotation control of the two shaftless augers 24 within the same reactor.

[0036] Preferably, in this embodiment, the connector 26 is a universal joint, with both ends of the universal joint connected to the shaft end of the geared motor and the end of the shaftless auger 24, respectively. Specifically, the geared motor and the shaftless auger 24 are connected by a universal joint, allowing the shaftless auger 24 to freely conform to the inner wall of the reactor. Therefore, the shaftless auger 24 can always be in contact with the bottom of the inner wall of the reactor, effectively preventing the problem of coking at the bottom of the reactor. Of course, in other embodiments, the connector 26 can also be configured with other structures, such as a splined shaft or a three-jaw chuck structure for connection.

[0037] In some embodiments, the upper reactor 21 of this invention is connected to a feed inlet 211 at the top, and the lower reactor 22 is connected to a slag outlet 221 at the bottom. The two feed inlets 211 are connected to a common feed pipe 212. A disperser 213 is installed in the common feed pipe 212. The common feed pipe 212 has a Y-shaped structure, and its bottom opening and the feed inlet 211 can be connected and fixed by bolts. The disperser 213 is a dispersing disc, which is used to stir and disperse materials by driving a cutting disc with a motor, so that the materials can enter the two upper reactors 21 evenly. Of course, the common feed pipe 212 can also be disassembled to form two feed inlets 211 for separate feeding. The two methods can be freely selected to improve the applicability of the entire device.

[0038] It should be noted that in this embodiment, multiple supporting lifting plates 27 are fixed on the outer peripheral surface of the shaftless auger 24. The design of the supporting lifting plates 27 in this embodiment is twofold: first, to prevent the material-propelling "blades" from shrinking and deforming when squeezing the material; and second, to allow the supporting lifting plates 27 to scatter the material, which is more conducive to the heat absorption of material dispersion.

[0039] Furthermore, in this embodiment, the top of the upper reactor 21 has a gas outlet pipe 28 that extends through the furnace body 1. The gas outlet pipe 28 is used to discharge hot gas. A support block 29 is fixedly connected between the upper reactor 21 and the lower reactor 22. The support block 29 is used to support the upper reactor 21 to ensure the stability of the stacked connection between the upper reactor 21 and the lower reactor 22.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pyrolysis device with a heating furnace housing multiple shaftless auger kettles, characterized in that, It includes a furnace body (1) and multiple reactor groups (2) installed in the furnace body (1); Each reactor group (2) includes an upper reactor (21) and a lower reactor (22) stacked together. A feed pipe (23) is connected between the tail ends of the upper reactor (21) and the lower reactor (22). Both ends of the upper reactor (21) and the lower reactor (22) extend to the outside of the furnace body (1). A shaftless auger (24) is installed inside the upper reactor (21) and the lower reactor (22). A drive unit (25) is fixedly installed on the side of the upper reactor (21) and the lower reactor (22). The drive unit (25) is connected to the shaft end of the shaftless auger (24) through a connector (26).

2. The pyrolysis device with multiple shaftless auger kettles built into a heating furnace according to claim 1, characterized in that: The top of the furnace body (1) is connected to a flue pipe (11) and a hot gas inlet (12), respectively. A bottom crossbeam (13) is fixedly installed inside the furnace body (1), and the lower reactor (22) is installed on the bottom crossbeam (13).

3. The pyrolysis device with multiple shaftless auger kettles built into a heating furnace according to claim 1, characterized in that: The upper reactor (21) and the lower reactor (22) are each equipped with two shaftless augers (24). The ends of the two shaftless augers (24) are respectively formed with connecting sleeves (241) and plug-in ends (242). The connecting sleeves (241) and the plug-in ends (242) are plugged in and locked in a circumferential manner.

4. A pyrolysis device with a heating furnace and multiple shaftless auger kettles as described in claim 3, characterized in that: Both ends of the upper reactor (21) and the lower reactor (22) are fixedly equipped with driving components (25); The drive unit (25) includes a geared motor, and a mechanical seal (251) is fixedly installed at the ends of the upper reactor (21) and the lower reactor (22). The shaft end of the drive unit (25) passes through the mechanical seal (251) into the interior of the upper reactor (21) and the lower reactor (22).

5. A pyrolysis device with a heating furnace and multiple shaftless auger kettles as described in claim 4, characterized in that: The connector (26) is a universal joint, and the two ends of the universal joint are respectively connected to the shaft end of the geared motor and the end of the shaftless auger (24).

6. A pyrolysis device with a heating furnace and multiple shaftless auger kettles as described in claim 1, characterized in that: The upper reactor (21) is connected to a feed inlet (211) at the top, and the lower reactor (22) is connected to a slag outlet (221) at the bottom. The two feed inlets (211) are connected to a common feed pipe (212), and a disperser (213) is installed in the common feed pipe (212).

7. A pyrolysis device with a heating furnace and multiple shaftless auger kettles built in any one of claims 1-6, characterized in that: Multiple support lifting plates (27) are fixed on the outer circumferential surface of the shaftless auger (24).

8. A pyrolysis device with a heating furnace and multiple shaftless auger kettles built in any one of claims 1-6, characterized in that: The top of the upper reactor (21) has an exhaust pipe (28) that extends through the furnace body (1), and a support block (29) is fixedly connected between the upper reactor (21) and the lower reactor (22).

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