Plastic gasification pyrolysis mechanism and device thereof

Abstract

The application provides a plastic gasification pyrolysis mechanism and device, and the plastic gasification pyrolysis mechanism comprises a hearth, the top of the hearth is provided with a material feeding pipe; an elliptical rotating drum is internally connected with a heat carrier, two elliptical rotating drums are arranged and abut against each other and can rotate in the same direction, the two elliptical rotating drums are 90 degrees out of phase with each other, the elliptical rotating drums are arranged in the hearth, and the two elliptical rotating drums are arranged below the feeding pipe; a driving device is in transmission connection with the two elliptical rotating drums and can drive the two elliptical rotating drums to rotate in the same direction. The material is extruded and gasified by the rotation of the two elliptical rotating drums, the material is attached to the outer surface of the elliptical rotating drum after being extruded, the contact area of the material and the outer surface of the high-temperature elliptical rotating drum is large, the material is more easily gasified, the material is continuously extruded by rotation, the contact area of the extruded and deformed material and the elliptical rotating drum is large, the material is uniformly heated, and the material is more easily gasified, so that the energy consumption of the pyrolysis mechanism is reduced, and the thermal efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pyrolysis equipment, in particular to a plastic gasification pyrolysis mechanism and device thereof. BACKGROUND

[0002] Common waste plastic treatment methods include landfill, incineration and granulation. Landfill seriously hinders groundwater infiltration, additives in plastics can cause secondary pollution of the land, and plastic waste landfill has low resource utilization rate; incineration of plastic waste produces a large amount of toxic and harmful gases and releases harmful substances; recycled granulation decomposes recycled plastics into particles through mechanical processing, and then re-manufactures them into new plastic products. However, recycled granulation has a narrow application range, high cost and new plastics are prone to aging.

[0003] Gasification is a relatively new chemical decomposition method. This technology can convert waste plastics into carbon black, combustible gas, oil and other high-value energy products, and the method produces little pollution. However, there are still many problems in the technical treatment of plastic gasification, such as the use of disc rotary dryers, which have low thermal efficiency and high energy consumption. SUMMARY

[0004] The present application provides a plastic gasification pyrolysis mechanism to solve the defects of high energy consumption and low thermal efficiency in the prior art during plastic treatment.

[0005] To achieve the above-mentioned purpose, the technical solution of the present application is as follows: a plastic gasification pyrolysis mechanism, comprising:

[0006] a hearth, the top of which is provided with a material feeding pipe;

[0007] elliptical rotating cylinders, the inside of which is connected with a hot carrier, the two elliptical rotating cylinders are arranged to abut against each other and can rotate in the same direction, the elliptical rotating cylinders are arranged inside the hearth, and the two elliptical rotating cylinders are arranged below the feeding pipe;

[0008] a driving device, which is in driving connection with the two elliptical rotating cylinders and can drive the two elliptical rotating cylinders to rotate in the same direction.

[0009] Preferably, one end surface of the elliptical rotating cylinder is connected with a hot carrier feeding pipeline, and the other end of the elliptical rotating cylinder is in driving connection with the driving device.

[0010] Preferably, the hot carrier feeding pipeline comprises a hot carrier feeding pipe and a hot carrier discharging pipe, the hot carrier discharging pipe is sleeved outside the hot carrier feeding pipe, the hot carrier discharging pipe is connected with the elliptical rotating cylinder, and the hot carrier feeding pipe extends into the inside of the elliptical rotating cylinder.

[0011] Preferably, the outlet of the heat carrier feeding pipe is close to one end of the elliptical rotating drum away from the heat carrier outlet pipe.

[0012] Preferably, a transmission mechanism is arranged between the driving device and the elliptical rotating drum, and the transmission mechanism can drive the two elliptical rotating drums to rotate synchronously.

[0013] Preferably, the transmission mechanism comprises a first transmission shaft, a first transmission gear, a second transmission gear, a third transmission gear and a second transmission shaft, one end of the first transmission shaft is fixedly connected with one of the elliptical rotating drums, the other end of the first transmission shaft is connected with the output end of the driving device, the first transmission gear is fixedly sleeved on the first transmission shaft, one end of the second transmission shaft is fixedly connected with the other elliptical rotating drum, the second transmission gear is fixedly sleeved on the second transmission shaft, and the third transmission gear is engaged with the first transmission gear and the second transmission gear.

[0014] Preferably, a third transmission shaft is arranged in the third transmission gear.

[0015] The first transmission shaft is arranged on a first mounting seat, the second transmission shaft is arranged on a second mounting seat, and the third transmission shaft is arranged on a third mounting seat, wherein the first mounting seat, the second mounting seat and the third mounting seat are fixedly arranged.

[0016] Preferably, the device further comprises a heat carrier recovery tank arranged below the outlet of the heat carrier outlet pipe.

[0017] Preferably, part of the heat carrier outlet pipe and part of the heat carrier feeding pipe are arranged on the heat carrier recovery tank.

[0018] The second aspect of the present application also provides a plastic gasification pyrolysis device comprising the plastic gasification pyrolysis mechanism according to any one of the above embodiments.

[0019] Compared with the prior art, the present application has the following advantages: the material is extruded and gasified by the rotation of the two elliptical rotating drums, and the material adheres to the outer surface of the elliptical rotating drum after being extruded, at this time, the contact area of the material with the outer surface of the high-temperature elliptical rotating drum is larger, and the material is more easily gasified, the material is continuously extruded and deformed by the rotation, the contact area of the material with the elliptical rotating drum is larger, and the material is more easily gasified, so that the energy consumption of the pyrolysis mechanism is low, and the thermal efficiency is high; the elliptical rotating drum does not accumulate material and carbon, and the deformation of the elliptical cylinder is small, so that the service life of the pyrolysis mechanism is long. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only some embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without creative effort based on these drawings also belong to the protection scope of the present application.

[0021] Figure 1 is a structural schematic diagram of a pyrolysis mechanism provided by the present application;

[0022] Figure 2 is Figure 1 is a partial enlarged schematic diagram of a in the

[0023] Figure 3 is a schematic diagram of the installation structure of an elliptical rotating drum;

[0024] Figure 4 is Figure 3 is a front view schematic diagram of

[0025] Figure 5 is Figure 4 is a sectional structure schematic diagram of A-A in the

[0026] Reference signs:

[0027] 10, furnace; 11, material feeding pipe; 12, pyrolysis gas exhaust pipe; 13, slag outlet pipe; 20, elliptical rotating drum; 30, driving device; 40, hot carrier feeding pipe; 41, hot carrier feeding pipe; 42, hot carrier outlet pipe; 50, transmission mechanism; 51, first transmission shaft; 52, first transmission gear; 53, second transmission gear; 54, third transmission gear; 55, second transmission shaft; 56, third transmission shaft; 57, first mounting seat; 58, second mounting seat; 59, third mounting seat; 60, hot carrier recovery tank. DETAILED DESCRIPTION

[0028] In order to make the objects, technical solutions and advantages of the present application clearer, the following will combine the drawings in the present application to clearly and completely describe the technical solutions in the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0029] As shown in Figures 1 to 5 , the embodiment of the present application provides a plastic gasification pyrolysis mechanism, which comprises a furnace 10, an elliptical rotating drum 20 and a driving device 30. The furnace 10 is internally hollow to form an accommodating space. The elliptical rotating drum 20 is arranged in the interior of the furnace 10. The driving device 30 is arranged outside the furnace 10 and is in driving connection with the elliptical rotating drum.

[0030] A material feeding pipe 11 is arranged at the top of the furnace 10, and the material can enter the furnace 10 from the material feeding pipe 11. The material can be waste thin-layer plastic. A hot carrier (here, high-temperature molten salt liquid) is introduced into the interior of the elliptical rotating drum 20. The hot carrier also heats the elliptical rotating drum 20. The temperature of the outer surface of the elliptical rotating drum 20 is increased. The elliptical rotating drum 20 is arranged below the material feeding pipe 11. When the material enters from the material feeding pipe 11 and falls onto the outer surface of the elliptical rotating drum 20, the material is in contact with the high-temperature outer surface of the elliptical rotating drum 20. At this time, the material can be gasified. Two elliptical rotating drums 20 are arranged and abut each other and can rotate in the same direction. The two elliptical rotating drums 20 can rotate to extrude and gasify the material. After being extruded, the material adheres to the outer surface of the elliptical rotating drum 20. At this time, the contact area of the material with the high-temperature outer surface of the elliptical rotating drum 20 is increased, and the material is more easily gasified. The driving device 30 is in transmission connection with the two elliptical rotating drums 20 and simultaneously drives the two elliptical rotating drums 20 to rotate in the same direction. Through continuous rotation, the material is extruded and deformed, and the contact area of the material with the elliptical rotating drum 20 is increased, so that the material is more easily gasified. The two elliptical rotating drums 20 are arranged in a 90-degree staggered manner, one horizontally and one vertically, which is compact in structure and small in space occupation.

[0031] A pyrolysis gas exhaust pipe 12 is further arranged at the top of the furnace 10 and is used to exhaust the gas after the material is gasified. A slag discharge pipe 13 is further arranged at the bottom of the furnace 10. The slag left after the material is extruded and gasified by the elliptical rotating drum 20 can be discharged from the slag discharge pipe 13.

[0032] In order to facilitate the introduction of the high-temperature hot carrier into the interior of the furnace 10, a hot carrier feeding pipe 40 is communicated with one end face of the elliptical rotating drum 20. The hot carrier enters the interior of the elliptical rotating drum 20 for heat exchange. After the heat exchange is completed, the low-temperature hot carrier can flow out of the hot carrier feeding pipe 40. The other end of the elliptical rotating drum 20 is in transmission connection with the driving device 30. The two elliptical rotating drums 20 can be synchronously rotated through the action of the driving device 30, so that the inner and outer surfaces of the elliptical rotating drum 20 are more uniformly heated.

[0033] It should be understood that, since the heat-conducting salt has good heat transfer performance, is non-toxic and non-flammable, and has strong thermal stability, the heat-conducting salt is used as a heat carrier and heating medium in the embodiment. The molten salt is in a high-temperature liquid state and has good fluidity. The temperature of the heat-conducting molten salt entering the device is 400-600℃.

[0034] Further, the heat carrier feeding pipe 40 comprises a heat carrier feeding pipe 41 and a heat carrier discharging pipe 42, the heat carrier feeding pipe 41 and the heat carrier discharging pipe 42 are in a sleeving manner, that is, the heat carrier discharging pipe 42 is sleeved outside the heat carrier feeding pipe 41, a channel for the heat carrier to pass through is formed between the heat carrier feeding pipe 41 and the heat carrier discharging pipe 42, the heat carrier after heat exchange can be discharged from the channel between the heat carrier feeding pipe 41 and the heat carrier discharging pipe 42, wherein the heat carrier discharging pipe 42 is in communication with the elliptical cylinder 20 and is arranged at one end of the elliptical cylinder 20, the heat carrier feeding pipe 41 extends into the interior of the elliptical cylinder 20, the high-temperature heat carrier enters the interior of the elliptical cylinder 20 from the heat carrier feeding pipe 41, and as the elliptical cylinder 20 rotates, the outer surface of the elliptical cylinder 20 is heated and the temperature is increased, and finally the heat carrier is discharged through the heat carrier discharging pipe 42. The heat carrier feeding pipe 41 and the heat carrier discharging pipe 42 are in a sleeving manner, that is, the large pipe is sleeved with the small pipe, which reduces the space for installing the heat carrier feeding pipe 41 and the heat carrier discharging pipe 42, reduces the installation of the fittings, reduces the manufacturing cost, easily ensures the coaxiality, and simplifies the structure of the pyrolysis mechanism.

[0035] During installation, in order to make the heat carrier enter the interior of the elliptical cylinder 20 and then be discharged from the heat carrier discharging pipe 42, the feeding port of the heat carrier feeding pipe 41 and the discharging port of the heat carrier discharging pipe 42 are arranged close to the two end faces of the elliptical cylinder 20 respectively, since the heat carrier discharging pipe 42 is connected with one end face of the elliptical cylinder 20, the feeding port of the heat carrier feeding pipe 41 is close to the end of the elliptical cylinder 20 away from the heat carrier discharging pipe 42 in the interior of the elliptical cylinder 20.

[0036] In order to conveniently transmit the force generated by the driving device 30 to the elliptical cylinder 20 to drive the elliptical cylinder 20 to rotate, a transmission mechanism 50 is arranged between the driving device 30 and the elliptical cylinder 20, which is large in transmission torque and stable in transmission, and can drive the two elliptical cylinders 20 to rotate synchronously.

[0037] Specifically, the transmission mechanism 50 comprises a first transmission shaft 51, a first transmission gear 52, a second transmission gear 53, a third transmission gear 54 and a second transmission shaft 55, one end of the first transmission shaft 51 is fixedly connected with one of the elliptical rotating cylinders 20, the other end of the first transmission shaft 51 is connected with the output end of the driving device 30 through a shaft coupling, so that the first transmission shaft 51 can rotate synchronously with the output end of the driving device 30, the first transmission gear 52 is fixedly sleeved on the first transmission shaft 51, one end of the second transmission shaft 55 is fixedly connected with the other elliptical rotating cylinder 20, the second transmission gear 53 is fixedly sleeved on the second transmission shaft 55, and the third transmission gear 54 is arranged between the first transmission gear 52 and the second transmission gear 53 and is in meshing connection with the first transmission gear 52 and the second transmission gear 53. The first transmission shaft 51 is driven to rotate by the output end of the driving device 30, and the second transmission shaft 55 rotates synchronously with the first transmission shaft 51 under the cooperation of the first transmission gear 52, the second transmission gear 53 and the third transmission gear 54, so that the two elliptical rotating cylinders 20 rotate synchronously, and the materials between the two elliptical rotating cylinders 20 are extruded.

[0038] The third transmission shaft 56 is arranged in the third transmission gear 54, the third transmission shaft 56 is arranged on the third mounting seat 59, correspondingly, the first transmission shaft 51 is arranged on the first mounting seat 57, and the second transmission shaft 55 is arranged on the second mounting seat 58, wherein the first mounting seat 57, the second mounting seat 58 and the third mounting seat 59 are fixedly arranged. In this way, the overall stability of the transmission mechanism 50 can be ensured, and the synchronous rotation of the two elliptical rotating cylinders 20 for a long time can be ensured, so that the service life of the pyrolysis mechanism is long.

[0039] In an embodiment, the pyrolysis mechanism further comprises a heat carrier recovery tank 60, and the heat carrier recovery tank 60 is arranged below the discharge port of the heat carrier discharge pipe 42. When the heat carrier in the elliptical rotating cylinder 20 is discharged from the heat carrier discharge port, the heat carrier recovery tank 60 can collect the heat carrier after heat exchange.

[0040] Specifically, the heat carrier recovery tank 60 is connected with the heat carrier feeding pipe 41 and the heat carrier discharge pipe 42 in a plug-in manner, that is, part of the heat carrier discharge pipe 42 is arranged on the heat carrier recovery tank 60, and part of the heat carrier feeding pipe 41 is arranged on the heat carrier recovery tank 60, so that the heat carrier recovery tank 60 is convenient to disassemble and assemble, and when the heat carrier recovery tank 60 collects a certain amount of heat carrier, the materials in the heat carrier recovery tank 60 can be recycled and heated in time.

[0041] The second aspect of the present application also provides a plastic gasification and pyrolysis device comprising the plastic gasification and pyrolysis mechanism according to any one of the above embodiments. The plastic gasification and pyrolysis device also has the corresponding technical effects due to the adoption of the plastic gasification and pyrolysis mechanism.

[0042] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the same; although the present application has been described in detail with reference to the foregoing examples, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A plastic gasification pyrolysis mechanism, characterized by, The utility model relates to a plastic gasification pyrolysis mechanism, including: The hearth is provided with material feeding pipe on the top; The inside of the elliptical rotating drum is connected with the hot carrier, and the elliptical rotating drum is provided with two and abuts against each other and can rotate along the same direction, the elliptical rotating drum is arranged in the hearth, and two elliptical rotating drums are arranged below the feeding pipe, and two elliptical rotating drums are 90 degrees staggered with each other; Driving device is in transmission connection with two elliptical rotating drums and can drive two elliptical rotating drums to rotate along the same direction; One end surface of the elliptical rotating drum is connected with the hot carrier feeding pipe, and the other end of the elliptical rotating drum is in transmission connection with the driving device; The hot carrier feeding pipe includes hot carrier feeding pipe and hot carrier discharge pipe, and the hot carrier discharge pipe is sleeved outside the hot carrier feeding pipe, wherein the hot carrier discharge pipe is connected with the elliptical rotating drum, and the hot carrier feeding pipe extends to the inside of the elliptical rotating drum; Transmission mechanism is arranged between the driving device and the elliptical rotating drum, and the transmission mechanism can drive two elliptical rotating drums to rotate synchronously;The transmission mechanism includes first transmission shaft, first transmission gear, second transmission gear, third transmission gear and second transmission shaft, one end of the first transmission shaft is fixedly connected with one of the elliptical rotating drums, the other end of the first transmission shaft is connected with the output end of the driving device, the first transmission gear is fixedly sleeved on the first transmission shaft, one end of the second transmission shaft is fixedly connected with the other elliptical rotating drum, the second transmission gear is fixedly sleeved on the second transmission shaft, and the third transmission gear is in meshing connection with the first transmission gear and the second transmission gear.

2. The plastic gasification pyrolysis mechanism according to claim 1, wherein: The discharge port of the hot carrier feeding pipe is close to the end of the elliptical rotating drum away from the hot carrier discharge pipe.

3. The plastic gasification pyrolysis mechanism according to claim 1, wherein: The third transmission shaft is arranged in the third transmission gear; The first transmission shaft is arranged on the first mounting seat, the second transmission shaft is arranged on the second mounting seat, and the third transmission shaft is arranged on the third mounting seat, wherein the first mounting seat, the second mounting seat and the third mounting seat are fixedly arranged.

4. The plastic gasification pyrolysis mechanism according to claim 1 or 2, characterized in that, Further comprising: The hot carrier recovery tank is arranged below the discharge port of the hot carrier discharge pipe.

5. The plastic gasification pyrolysis mechanism according to claim 4, wherein: Part of the hot carrier discharge pipe is arranged on the hot carrier recovery tank, and part of the hot carrier feeding pipe is arranged on the hot carrier recovery tank.

6. A plastic gasification pyrolysis apparatus, comprising: The utility model relates to a plastic gasification pyrolysis mechanism, including: The hearth is provided with material feeding pipe on the top; The inside of the elliptical rotating drum is connected with the hot carrier, and the elliptical rotating drum is provided with two and abuts against each other and can rotate along the same direction, the elliptical rotating drum is arranged in the hearth, and two elliptical rotating drums are arranged below the feeding pipe, and two elliptical rotating drums are 90 degrees staggered with each other; Driving device is in transmission connection with two elliptical rotating drums and can drive two elliptical rotating drums to rotate along the same direction; One end surface of the elliptical rotating drum is connected with the hot carrier feeding pipe, and the other end of the elliptical rotating drum is in transmission connection with the driving device; The hot carrier feeding pipe includes hot carrier feeding pipe and hot carrier discharge pipe, and the hot carrier discharge pipe is sleeved outside the hot carrier feeding pipe, wherein the hot carrier discharge pipe is connected with the elliptical rotating drum, and the hot carrier feeding pipe extends to the inside of the elliptical rotating drum; Transmission mechanism is arranged between the driving device and the elliptical rotating drum, and the transmission mechanism can drive two elliptical rotating drums to rotate synchronously;The transmission mechanism includes first transmission shaft, first transmission gear, second transmission gear, third transmission gear and second transmission shaft, one end of the first transmission shaft is fixedly connected with one of the elliptical rotating drums, the other end of the first transmission shaft is connected with the output end of the driving device, the first transmission gear is fixedly sleeved on the first transmission shaft, one end of the second transmission shaft is fixedly connected with the other elliptical rotating drum, the second transmission gear is fixedly sleeved on the second transmission shaft, and the third transmission gear is in meshing connection with the first transmission gear and the second transmission gear.

Images