Continuous thermal cracking equipment for waste rubber and plastic

Abstract

The utility model provides continuous thermal cracking equipment for waste rubber and plastic, which belongs to the field of solid-liquid recovery processing equipment and comprises a reaction kettle and a first conveying component, a screen drum is arranged on one side of a discharge port in the reaction kettle, and a plurality of trays are arranged on the screen drum along the circumferential direction; the first conveying assembly is arranged in a discharge port of the reaction kettle in a penetrating manner, the first conveying assembly comprises a first conveying cylinder and a first rotating shaft, the first rotating shaft is arranged in the first conveying cylinder in a penetrating manner, and a plurality of first spiral blades are arranged on the first rotating shaft; and the first rotating shaft drives the first spiral blade to rotate forwards or backwards. The utility model solves the technical problems that the existing thermal cracking equipment is insufficient in cracking and is discharged, and solid materials such as waste rubber and plastic can only be thermally cracked in a single direction, and has the characteristics that the materials can be more fully cracked, and the bidirectional thermal cracking of the materials can be realized without shutdown.

Description

Technical Field

[0001] The utility model belongs to the field of solid-liquid recovery and processing equipment, in particular to a waste rubber and plastic continuous thermal cracking equipment. Background Art

[0002] At present, the accumulation of a large amount of waste rubber and plastic not only occupies land, but also easily causes fire and causes environmental pollution. Recycling waste rubber and plastic can not only alleviate its pressure on the environment and reduce pollution, but also realize the effective recycling of resources.

[0003] At present, the methods for treating waste rubber and plastics include prototype modification, production of recycled rubber and rubber powder, incineration, and pyrolysis technology. Among them, pyrolysis technology is a very promising method for treating waste rubber and plastics. Pyrolysis technology for waste rubber and plastics is to thermally decompose waste rubber and plastics in anoxic or inert gas to produce pyrolysis gas, pyrolysis oil and carbon residue. These products can be further processed and transformed into high-value products with various uses. Compared with traditional treatment methods, pyrolysis can not only recover high-value-added products, but also recover nearly 70% of energy, with high economic and environmental benefits.

[0004] However, this pyrolysis technology for treating waste rubber and plastic is achieved through thermal cracking equipment, and traditional thermal cracking equipment: 1. Due to the influence of factors such as the structure and unreasonable design of the reactor, it can generally only pyrolyze solid materials such as waste rubber and plastic in one direction, and cannot crack a large amount of liquid materials such as oil residue and oil sludge remaining in the pyrolysis plant without stopping the machine. Since the properties of these liquid materials such as oil residue and oil sludge are extremely unstable, fire accidents are very likely to occur, causing certain safety hazards to the factory; 2. It is necessary to design a rear sealed chamber at the rear end of the reactor to separate the cracking carbon black and the cracking oil vapor at the rear sealed chamber. At this time, the block-shaped waste rubber and plastic that may not be cracked sufficiently may also enter the rear sealed chamber at the same time, resulting in the phenomenon that the waste rubber and plastic that is not cracked sufficiently is discharged from the reactor. Utility Model Content

[0005] Details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent.

[0006] The utility model provides a continuous thermal cracking device for waste rubber and plastic, which solves the technical problems of existing thermal cracking devices that waste rubber and plastic solid materials are discharged due to insufficient cracking and can only be thermally cracked in one direction. It has the characteristics of being able to crack the materials more fully and achieving thermal cracking of materials in both directions without stopping the machine.

[0007] The utility model discloses a waste rubber and plastic continuous thermal cracking device, comprising a reactor and a first conveying component, a screen drum is provided on one side of a material discharge port in the reactor, and a plurality of trays are provided on the outer wall of the screen drum along the circumferential direction; the first conveying component is passed through the material discharge port of the reactor, the first conveying component comprises a first conveying cylinder and a first rotating shaft, a first feed port and a second feed port are provided above the first conveying cylinder, a material discharge port is provided below the first conveying cylinder, the first feed port and the material discharge port are located on the inner side of the reactor, the second feed port is located on the outer side of the reactor, and the screen drum is sleeved on the first feed port; the first rotating shaft is passed through the first conveying cylinder, a plurality of first spiral blades are provided on the first rotating shaft, and the first rotating shaft drives the first spiral blades to rotate forward or reversely.

[0008] In some of the embodiments, a first conveying pipeline is further included, one end of the first conveying pipeline is connected to the second feed port, and the other end of the first conveying pipeline is connected to the driving device.

[0009] In some embodiments, a second conveying component is further included, which is connected to the feed port of the reactor. The second conveying component includes a second conveying cylinder and a second rotating shaft. The feed port of the second conveying cylinder is connected to a buffer silo; the second rotating shaft is inserted into the second conveying cylinder, and a plurality of second spiral blades are provided on the second rotating shaft.

[0010] In some embodiments, the plurality of second spiral blades are arranged at unequal intervals along the length direction of the second rotating shaft.

[0011] In some of the embodiments, a dynamic and static sealing sleeve is provided at the feed inlet of the reactor and the discharge outlet of the reactor, respectively.

[0012] In some embodiments, it further includes a heating box and a plurality of burners, wherein the heating box is sleeved on the reactor, and a smoke outlet is provided on the heating box; the plurality of burners are arranged at the bottom of the heating box.

[0013] In some embodiments, an end of the first conveying cylinder away from the reactor is connected to an oil steam conveying pipeline and a slag discharge screw machine.

[0014] In some embodiments, an oil vapor separation tank and a heavy component oil storage tank are further included, wherein one end of the oil vapor separation tank is connected to the oil vapor delivery pipeline; and the heavy component oil storage tank is connected to the other end of the oil vapor separation tank.

[0015] In some embodiments, a condenser is further included, one end of the condenser is connected to the oil vapor separation tank, and a plurality of condensation tubes are arranged in the condenser.

[0016] In some embodiments, the condenser is provided with a water injection pipe, an overflow pipe and an oil outlet pipe, one end of the oil outlet pipe is connected to an oil storage tank, and the oil storage tank is provided with an oil outlet.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The waste rubber and plastic continuous pyrolysis equipment disclosed in the utility model can effectively filter the pyrolysis carbon black and pyrolysis oil vapor of qualified particle size after pyrolysis through the arrangement of a screen cylinder, and convey them from the first feed port along the first conveying assembly, while the pyrolysis carbon black of unqualified particle size will continue to be cracked in the reactor, so that the cracking is more complete, and the first conveying cylinder is located above the outside of the reactor and the second feed port is arranged, and the first conveying cylinder is located below the inside of the reactor and the discharge port is arranged. Without stopping the machine, a large amount of liquid materials such as oil residue and sludge remaining in the pyrolysis plant can be conveyed to the discharge port through the second feed port along the first conveying assembly in the opposite direction, and enter the reactor from the discharge port for further cracking, so that the cracking is more complete, and has the characteristics of complete harmlessness and continuous cracking without stopping the machine.

[0019] 2. The utility model provides a first conveying pipeline and a driving device, and there is no need to manually feed materials into the second feed port. It only needs to start the driving device to transport liquid materials such as oil residue and oil sludge to the second feed port through the first conveying pipeline, and then change the rotation direction of the first rotating shaft to transport liquid materials such as oil residue and oil sludge into the reactor, which not only greatly reduces labor but also improves work efficiency.

[0020] 3. In the utility model, by setting up a second conveying component, solid materials such as waste rubber and plastic can be conveyed to the second conveying component through the buffer silo, and the waste rubber and plastic solid materials can be conveyed to the reactor through the second conveying component. The second spiral blades in the second conveying component are arranged at unequal intervals to compress and release the incoming solid materials such as waste rubber and plastic, thereby effectively preventing the high-temperature oil vapor in the reactor from leaking out.

[0021] 4. In the utility model, a plurality of trays are arranged in the circumferential direction of the screen drum, and the cracking products in the reactor can be gathered in the trays. The trays rotate with the reactor. When any tray rotates to the first feed port, the cracking products in the tray pass through the screen drum and enter the first feed port. The plurality of trays guide the output of the cracking products, which is more conducive to the output of the cracking products.

[0022] 5. The utility model sets a heating box outside the reactor to continuously heat the reactor through the heating box, and a flue gas outlet is set on the heating box, which can effectively ensure that the flue gas discharged is transported to the external desulfurization system to achieve standard emission, and multiple burners are evenly arranged at the bottom of the heating box, which can make the heating box heated more evenly.

[0023] 6. In the utility model, by connecting the oil vapor conveying pipeline and the slag discharge screw machine to the first conveying cylinder, the cracked carbon black and the cracked oil vapor can be effectively separated.

[0024] 7. In order to further separate the heavy component from the light component, the utility model also provides an oil-steam separation tank, through which the heavy component is separated into a heavy component oil storage tank.

[0025] 8. In the utility model, the separated light components enter the condenser through the oil vapor separation tank, and the oil generated after cooling by the condenser enters the oil storage tank through the oil outlet pipe, wherein the water injection pipe arranged on the condenser can continuously inject cooling water into the condenser for cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0027] Figure 1 A schematic diagram of the structure of a waste rubber and plastic continuous thermal cracking device provided by an embodiment of the utility model;

[0028] Figure 2 A partial cross-sectional view of a waste rubber and plastic continuous thermal cracking device provided by an embodiment of the utility model;

[0029] Figure 3 Another partial cross-sectional view of the waste rubber and plastic continuous thermal cracking equipment provided by the embodiment of the utility model;

[0030] In the above figures: 1-reactor; 2-screen drum; 3-first conveying assembly; 301-first conveying cylinder; 302-first feed port; 303-second feed port; 304-discharge port; 305-first rotating shaft; 306-first spiral blade; 4-first conveying pipeline; 5-driving device; 6-second conveying assembly; 601-second conveying cylinder; 602-second rotating shaft; 603-second spiral blade; 7-buffer silo; 8-tray; 9-heating box; 10-smoke outlet; 11-burner; 12-oil steam conveying pipeline; 13-slag removal screw machine; 14-oil steam separation tank; 15-heavy component oil storage tank; 16-condenser; 17-condenser pipe; 18-water injection pipe; 19-overflow pipe; 20-oil outlet pipe; 21-oil storage tank; 22-oil outlet. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is described and illustrated in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. Based on the embodiments provided by the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0032] The purpose of the utility model is to address the defects and shortcomings of the prior art and provide a waste rubber and plastic continuous thermal cracking equipment that can be applied to a variety of scenarios, has a novel design, is safe and reliable, and has stable transportation.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0034] The utility model embodiment provides a waste rubber and plastic continuous thermal cracking device, referring to Figures 1 to 3As shown, the device at least includes a reactor 1 and a first conveying component 3, a screen drum 2 is provided on one side of the discharge port in the reactor 1; a plurality of trays 8 are provided on the outer wall of the screen drum 2 along the circumferential direction; the first conveying component 3 is penetrated in the discharge port of the reactor 1, the first conveying component 3 includes a first conveying cylinder 301 and a first rotating shaft 305, a first feed port 302 and a second feed port 303 are provided above the first conveying cylinder 301, a discharge port 304 is provided below the first conveying cylinder 301, the first feed port 302 and the discharge port 304 are located on the inner side of the reactor 1, the second feed port 303 is located on the outer side of the reactor 1, and the screen drum 2 is sleeved on the first feed port 302; the first rotating shaft 305 is penetrated in the first conveying cylinder 301, a plurality of first spiral blades 306 are provided on the first rotating shaft 305, and the first rotating shaft 305 drives the first spiral blades to rotate forward or reverse 306. The utility model can effectively filter the cracked carbon black and cracked oil vapor of qualified particle size after pyrolysis and convey them from the first feed port 302 along the first conveying assembly 3 by setting the screen cylinder 2. A plurality of trays 8 are set in the circumferential direction of the screen cylinder 2, so that more cracked products in the reactor 1 can be collected in the trays 8. The trays 8 rotate with the reactor 1. When any tray 8 rotates to the first feed port 302, the cracked products in the tray 8 pass through the screen cylinder 2 and enter the first feed port 302. The setting of the tray 8 is more conducive to the collection and output of the cracked products; the cracked carbon black of unqualified particle size will rotate with the rotation of the tray 8. After entering the reactor 1, further cracking is carried out in the reactor 1 to make the cracking more complete, and a second feed port 303 is arranged above the first conveying cylinder 301 on the outside of the reactor 1, and a discharge port 304 is arranged below the first conveying cylinder 301 on the inside of the reactor 1. Without stopping the machine, a large amount of liquid materials such as oil residue and sludge remaining in the pyrolysis plant can be transported to the discharge port 304 along the opposite direction of the first conveying component 3 through the second feed port 303, and enter the reactor 1 from the discharge port 304 for further cracking, so that the cracking is more complete, and has the characteristics of complete harmlessness and continuous cracking without stopping the machine.

[0035] Furthermore, the waste rubber and plastic continuous thermal cracking equipment provided by the utility model further includes a first conveying pipeline 4, one end of which is connected to the second feed port 303, and the other end of which is connected to the driving device 5. By providing the first conveying pipeline 4 and the driving device 5, the utility model does not need to manually feed materials into the second feed port 303, and only needs to start the driving device 5 to convey liquid materials such as oil residue and oil sludge to the second feed port 303 through the first conveying pipeline 4, and then change the rotation direction of the first rotating shaft 305 to convey liquid materials such as oil residue and oil sludge to the reactor 1, which not only greatly reduces labor, but also improves work efficiency.

[0036] Furthermore, the continuous thermal cracking equipment for waste rubber and plastic provided by the utility model also includes a second conveying component 6, which is connected to the feed port of the reactor 1. The second conveying component 6 includes a second conveying cylinder 601 and a second rotating shaft 602. The feed port of the second conveying cylinder 601 is connected to the buffer silo 7; the second rotating shaft 602 is passed through the second conveying cylinder 601, and a plurality of second spiral blades 603 are provided on the second rotating shaft 602.

[0037] In some embodiments, a fixed bracket is provided at the bottom of the second conveying assembly 6 to ensure the operation stability of the second conveying assembly 6 .

[0038] Furthermore, a plurality of second spiral blades 603 are arranged at unequal intervals along the length direction of the second rotating shaft 602. In the present invention, by arranging the second conveying assembly 6, solid materials such as waste rubber and plastic can be conveyed to the second conveying assembly 6 through the buffer silo 7, and the solid materials such as waste rubber and plastic can be conveyed to the reactor 1 through the second conveying assembly 6, and the second spiral blades 603 in the second conveying assembly 6 are arranged at unequal intervals, compressing and releasing the solid materials such as waste rubber and plastic entering, thereby effectively preventing the high-temperature oil vapor in the reactor 1 from leaking out.

[0039] In some embodiments, a temperature gauge is provided on the reactor 1 to detect the temperature of thermal cracking in the reactor 1 in real time, thereby effectively controlling the temperature in the reactor 1 .

[0040] In some embodiments, in order to ensure the stability of the reactor 1 during the cracking rotation process, a plurality of supporting wheels are arranged at the bottom of the reactor 1 .

[0041] Furthermore, dynamic and static sealing sleeves 23 are respectively provided at the feed inlet and the discharge port of the reactor 1. The dynamic and static sealing sleeves 23 are filled with sealing fillers. By adjusting the density of the sealing fillers, the leakage of high-temperature oil vapor in the reactor 1 can be effectively prevented.

[0042] Furthermore, the waste rubber and plastic continuous thermal cracking equipment provided by the utility model also includes a heating box 9 and a plurality of burners 11. The heating box 9 is sleeved on the reactor 1, and a smoke outlet 10 is provided on the heating box 9; and the plurality of burners 11 are evenly arranged at the bottom of the heating box 9. The utility model arranges the heating box 9 outside the reactor 1, and continuously heats the reactor 1 through the heating box 9, and the smoke outlet 10 is provided on the heating box 9, which can effectively ensure that the flue gas discharged is transported to the external desulfurization system to achieve standard emission, and the plurality of burners 11 are evenly arranged at the bottom of the heating box 9, so that the heating box 9 can be heated more evenly.

[0043] Furthermore, in order to separate the pyrolysis carbon black and pyrolysis oil vapor after the pyrolysis of the waste rubber and plastic, the utility model connects the end of the first conveying cylinder 301 away from the reactor 1 to the oil vapor conveying pipeline 12 and the slag discharge screw machine 13 .

[0044] Furthermore, in order to further separate the heavy component from the light component, the utility model further provides an oil vapor separation tank 14 , through which the heavy component is separated into a heavy component oil storage tank 15 .

[0045] Furthermore, the waste rubber and plastic continuous thermal cracking equipment provided by the utility model further includes a condenser 16 , one end of which is connected to the oil vapor separation tank 14 , and a plurality of condensing tubes 17 are arranged in the condenser 16 .

[0046] Furthermore, the condenser 16 is provided with a water injection pipe 18, an overflow pipe 19 and an oil outlet pipe 20, one end of the oil outlet pipe 20 is connected to an oil storage tank 21, and the oil storage tank 21 is provided with an oil outlet 22. In the present invention, the light component to be separated enters the condenser 16 through the oil vapor separation tank 14, and the oil generated after cooling by the condenser 16 enters the oil storage tank 21 through the oil outlet pipe 20, wherein the water injection pipe 18 provided on the condenser 16 can continuously inject cooling water into the condenser 17 for cooling.

[0047] In some embodiments, the oil outlet 22 on the oil storage tank 21 is connected to an external oil pump, so that the oil generated after cooling can be continuously output to the outside.

[0048] The working process of the above waste rubber and plastic continuous pyrolysis equipment is as follows:

[0049] After the waste rubber and plastic and other solid materials enter the second conveying component 6 from the buffer silo 7, the waste rubber and plastic and other solid materials are conveyed to the feed port of the reactor 1 through the second spiral blade 603, so that the waste rubber and plastic and other solid materials enter the reactor 1 from the feed port of the reactor 1 for thermal cracking, and the cracking products are generated as the reactor 1 rotates continuously, wherein the cracking products are gathered into a plurality of trays 8 as the reactor 1 rotates, and when any tray 8 rotates to the first feed port 302, the cracking products are filtered through the screen cylinder 2 to filter the cracking carbon black and cracking oil vapor of qualified particle size and enter the first conveying component 3 through the first feed port 302, while the cracking carbon black of unqualified particle size will continue to enter the reactor 1 for further cracking, and the first conveying component 3 conveys the cracked cracking carbon black and cracking oil vapor that are fully cracked from the first feed port 302 to the slag discharge screw machine 13 and the oil vapor conveying pipeline 12 respectively through the first spiral blade 306, wherein the cracking carbon black is discharged through the slag discharge screw machine 13, and the cracking oil vapor is discharged through the oil The steam conveying pipeline 12 conveys the oil to the oil steam separation tank 14, and after the heavy component and the remaining oil vapor are separated, the generated heavy component enters the heavy component oil storage tank 15, and the remaining oil vapor is further cooled by the condenser 16, and the cooled oil enters the oil storage tank 21 for storage and discharge, etc.; on the other hand, without stopping the machine, the waste rubber and plastic continuous thermal cracking equipment can also convey the oil residue, oil sludge and other liquid materials in the pyrolysis plant through the first conveying pipeline 4 to the second feed port 303 of the first conveying component 3, at this time, the rotation direction of the first spiral blade 306 is changed, so that the first conveying component 3 conveys the oil residue, oil sludge and other liquid materials from the second feed port 303 to the discharge port 304 through the first spiral blade 306, and the oil residue, oil sludge and other liquid materials enter the reactor 1 through the discharge port 304 for cracking, completing the waste rubber and plastic continuous thermal cracking equipment without stopping the machine. It can not only pyrolyze solid materials such as waste rubber and plastic, but also pyrolyze liquid materials such as oil residue and oil sludge, and can make the material cracking more fully.

[0050] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A continuous thermal cracking device for waste rubber and plastic, characterized in that: include: A reaction kettle, wherein a screen drum is provided on one side of a discharge port in the reaction kettle, and a plurality of trays are provided on an outer wall of the screen drum along a circumferential direction; The first conveying assembly is disposed in the discharge port of the reactor, and the first conveying assembly includes: A first conveying cylinder, wherein a first feed port and a second feed port are provided on the top of the first conveying cylinder, and a discharge port is provided on the bottom of the first conveying cylinder, wherein the first feed port and the discharge port are located inside the reactor, and the second feed port is located outside the reactor, and the screen cylinder is sleeved on the first feed port; The first rotating shaft is inserted into the first conveying cylinder. A plurality of first spiral blades are arranged on the first rotating shaft. The first rotating shaft drives the first spiral blades to rotate forward or reversely.

2. The waste rubber and plastic continuous thermal cracking equipment according to claim 1, characterized in that: It also includes a first conveying pipeline, one end of which is connected to the second feed port, and the other end of which is connected to a driving device.

3. The waste rubber and plastic continuous thermal cracking equipment according to claim 1, characterized in that: It also includes a second conveying assembly connected to the feed port of the reactor, and the second conveying assembly includes: A second conveying cylinder, wherein a feed port of the second conveying cylinder is connected to a buffer silo; The second rotating shaft is inserted into the second conveying cylinder, and a plurality of second spiral blades are arranged on the second rotating shaft.

4. The waste rubber and plastic continuous thermal cracking equipment according to claim 3, characterized in that: The plurality of second spiral blades are arranged at unequal intervals along the length direction of the second rotating shaft.

5. The waste rubber and plastic continuous thermal cracking equipment according to claim 1, characterized in that: A dynamic and static sealing sleeve is respectively provided at the feed inlet of the reactor and the discharge outlet of the reactor.

6. The waste rubber and plastic continuous thermal cracking equipment according to claim 1, characterized in that: Also includes: A heating box, the heating box is sleeved on the reactor, and a smoke outlet is provided on the heating box; A plurality of burners are arranged at the bottom of the heating box.

7. The waste rubber and plastic continuous thermal cracking equipment according to claim 1, characterized in that: An end of the first conveying cylinder away from the reactor is connected with an oil steam conveying pipeline and a slag discharge screw machine.

8. The waste rubber and plastic continuous thermal cracking equipment according to claim 7, characterized in that: Also includes: An oil vapor separation tank, one end of which is connected to the oil vapor delivery pipeline; A heavy component oil storage tank is connected to the other end of the oil vapor separation tank.

9. The waste rubber and plastic continuous thermal cracking equipment according to claim 8, characterized in that: It also includes a condenser, one end of which is connected to the oil vapor separation tank, and a plurality of condensation tubes are arranged in the condenser.

10. The waste rubber and plastic continuous thermal cracking equipment according to claim 9, characterized in that: The condenser is provided with a water injection pipe, an overflow pipe and an oil outlet pipe. One end of the oil outlet pipe is connected to an oil storage tank. The oil storage tank is provided with an oil outlet.

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