CN214088400U

CN214088400U - Novel waste rubber and plastic continuous internal rotation type double-helix thermal cracking system

Info

Publication number: CN214088400U
Application number: CN202023007013.1U
Authority: CN
Inventors: 陈晓燕; 周士峰; 冷帅; 张倩倩; 王贝贝; 马立成; 王雪强; 马宗臣
Original assignee: Doublestar Group Corp
Current assignee: Doublestar Group Corp
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-08-31
Anticipated expiration: 2030-12-14

Abstract

The utility model discloses a novel old and useless rubber and plastic serialization internal rotation formula double helix thermal cracking system belongs to useless rubber and plastic recovery processing equipment field. The technical scheme includes that the spiral reaction kettle is of a U-shaped structure and comprises a cylinder body, a first spiral shaft and a second spiral shaft which are arranged in the cylinder body in parallel, a first spiral blade sleeved outside the first spiral shaft and a second spiral blade sleeved outside the second spiral shaft; the first helical blade is arranged to rotate rightwards, the second helical blade is arranged to rotate leftwards, and the first helical blade and the second helical blade are partially overlapped; the heating device also comprises a heating box body sleeved outside the cylinder body, and a first heating pipeline and a second heating pipeline which are arranged in the cylinder body. The utility model discloses be applied to in the aspect of the thermal cracking treatment of waste rubber and plastic, solve current pyrolysis reactor and still have reation kettle inner wall long-pending charcoal and coking to and heating efficiency is low, and the inhomogeneous problem of material being heated has the characteristics that heating efficiency is high, the material is heated evenly, pyrolysis efficiency is high, be difficult for long-pending charcoal coking.

Description

Novel waste rubber and plastic continuous internal rotation type double-helix thermal cracking system

Technical Field

The utility model belongs to useless rubber and plastic recovery processing equipment field especially relates to a novel spiral double helix thermal cracking system in old and useless rubber and plastic serialization.

Background

The thermal cracking process is an important process for treating waste rubber and plastic such as waste tires, waste rubber, waste plastic and the like at present, can convert the waste rubber and plastic into recyclable industrial raw materials, finds a good solution for treating the waste rubber and plastic such as the waste tires and the waste rubber in the process, provides a new scheme for resource reduction and energy shortage improvement, and can provide a large amount of basic industrial raw materials and energy sources. The existing thermal cracking kettle generally adopts an outward rotating mode, the thermal cracking mode easily causes coking on the inner wall of the reaction kettle, and the utilization rate of the thermal efficiency is low by simply depending on external heating, so that the material is heated unevenly, the material cracking reaction is incomplete, and the quality and the production efficiency of products are influenced.

Chinese patent CN111286349A discloses a double-helix pyrolysis reactor based on pyrolysis carbon internal circulation enhanced heat transfer, which takes a horizontal cylindrical external spiral roller as a main body, the upper end of the left part of the double-helix pyrolysis reactor is provided with a pyrolysis gas outlet, the upper end of the right part of the double-helix pyrolysis reactor is provided with a feed inlet, the lower end of the right part of the double-helix pyrolysis reactor is provided with a pyrolysis carbon collecting box, and the outer side of the double-helix pyrolysis reactor is provided with an electric heating device, and the lower part of the electric heating device is provided with three support frames for supporting; two coaxial rotating screws with opposite blade spiral directions, namely an outer screw and an inner screw, are arranged in the inner spiral roller, a pyrolytic carbon exchange port is arranged at the left side of the inner spiral roller, a carbon circulation port is arranged at the lower end of the right side of the inner spiral roller, and a pyrolytic carbon collection box is arranged at the lower end of the right side of the outer spiral roller; this double helix pyrolysis reactor utilizes helical structure to carry the material, has improved the heat transfer performance of device, has increased the biomass handling capacity of unit volume, provides the solution for portable pyrolysis device's heat source problem.

However, the above double-helix pyrolysis reactor still has the problems of carbon deposit and coking on the inner wall of the reaction kettle, low heating efficiency and uneven material heating, which results in incomplete material cracking reaction and influences the product quality and production efficiency.

SUMMERY OF THE UTILITY MODEL

The weak point that exists to prior art, the utility model aims to solve the technical problem that overcome current pyrolysis reactor still to have reation kettle inner wall long-pending charcoal and coking to and heating efficiency is low, and the inhomogeneous problem of material being heated provides one kind and has heating efficiency height, material be heated evenly, pyrolysis efficiency height, be difficult for the double helix thermal cracking system of formula of spiraling in serialization of old and useless rubber and plastic.

For solving the technical problem, the utility model discloses a technical scheme be:

the utility model provides a novel waste rubber and plastic continuous internal rotation type double-helix thermal cracking system, which is used for waste rubber and plastic thermal cracking treatment and comprises a spiral reaction kettle, wherein the spiral reaction kettle is of a U-shaped structure and comprises a barrel body, a first screw shaft and a second screw shaft which are arranged in the barrel body in parallel, a first helical blade sleeved outside the first screw shaft, and a second helical blade sleeved outside the second screw shaft; the first helical blade is arranged to rotate rightwards, the second helical blade is arranged to rotate leftwards, and the first helical blade and the second helical blade are partially overlapped; the heating device is characterized by further comprising a heating box body sleeved outside the barrel body, and a first heating pipeline and a second heating pipeline which are arranged in the barrel body.

Preferably, the spiral reaction kettle further comprises a left end cover arranged at the left end of the cylinder body and a right end cover arranged at the right end of the cylinder body; the air inlet of the first heating pipeline is arranged on the right end cover, and the air outlet of the first heating pipeline is arranged on the left end cover; the air inlet of the second heating pipeline is arranged on the right end cover, and the air outlet of the second heating pipeline is arranged on the left end cover.

Preferably, the device also comprises an upper cover plate arranged on the top surface of the cylinder body, and the upper cover plate is provided with a pressure sensor and a temperature sensor.

Preferably, a first sealing sleeve is arranged at the left end of the first screw shaft, a first bearing support is arranged on the left side of the first sealing sleeve, and the first bearing support is connected with a first screw driver; the left end of the second screw shaft is provided with a second sealing sleeve, the left side of the second sealing sleeve is provided with a second bearing support, and the second bearing support is connected with a second screw driver.

Preferably, still include the slag discharging device, the slag discharging device includes spiral slag discharging device, spiral slag discharging device feed inlet with the spiral reation kettle discharge gate links to each other.

Preferably, the device further comprises a feeding device, wherein the feeding device is a screw feeder, and a discharge port of the screw feeder is connected with a feed port of the screw reaction kettle.

Preferably, the hot blast stove is connected with the heating box body, and the hot blast stove is connected with the first heating pipeline air inlet and the second heating pipeline air inlet through a three-way inlet connecting pipeline.

Preferably, flow control valves are arranged between the three-way connecting pipeline and the first heating pipeline and between the three-way connecting pipeline and the second heating pipeline.

Preferably, the device also comprises an oil gas outlet and an oil gas outlet control valve which are arranged at the top of the right side of the spiral reaction kettle.

Preferably, the heating box further comprises a tee outlet connecting pipeline connected with the first heating pipeline air outlet and the second heating pipeline air outlet, and the tee outlet connecting pipeline is connected with the heating box body.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model provides a novel old and useless rubber and plastic serialization internal rotation formula double helix thermal cracking system has the characteristics of heating efficiency height, material be heated evenly, pyrolysis efficiency height, difficult long-pending charcoal coking.

Drawings

FIG. 1 is a schematic structural diagram of a continuous internal rotation type double helix thermal cracking system according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a spiral reaction kettle according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a right end structure of a spiral reaction kettle according to an embodiment of the present invention;

FIG. 4 is a schematic view of a left end structure of a spiral reaction kettle according to an embodiment of the present invention;

in the above figures: 101. a barrel; 102. a first screw shaft; 103. a second screw shaft; 104. a first helical blade; 105. a second helical blade; 106. a left end cap; 107. a right end cap; 108. an upper cover plate; 109. a first seal cartridge; 110. a first bearing bracket; 111. a first screw drive; 112. a second seal cartridge; 113. a second bearing bracket; 114. a second screw drive; 21. heating the box body; 22. a first heating conduit; 23. a second heating conduit; 31. a pressure sensor; 32. a temperature sensor; 3. a spiral slag extractor; 4. a screw feeder; 5. a hot blast stove; 6. the inlet of the tee joint is connected with a pipeline; 7. an oil gas outlet control valve; 8. the three-way outlet is connected with a pipeline.

Detailed Description

The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in fig. 1, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b): as shown in fig. 1 and 2, the utility model provides a novel waste rubber and plastic continuous internal rotation type double helix thermal cracking system for waste rubber and plastic thermal cracking treatment, which comprises a helix reaction kettle, wherein the helix reaction kettle is of a U-shaped structure, and comprises a barrel body 101, a first helix shaft 102 and a second helix shaft 103 which are arranged in the barrel body 101 and arranged in parallel, a first helix blade 104 which is sleeved outside the first helix shaft 102, and a second helix blade 105 which is sleeved outside the second helix shaft 103; the first helical blade 104 is arranged to rotate rightwards, the second helical blade 105 is arranged to rotate leftwards, and the first helical blade 104 and the second helical blade 105 are partially overlapped; the heating device further comprises a heating box body 21 sleeved outside the cylinder body 101, and a first heating pipeline 22 and a second heating pipeline 23 which are arranged in the cylinder body 101. The continuous internal rotation type thermal cracking system is provided with a U-shaped spiral reaction kettle, a first spiral shaft 102 and a second spiral shaft 103 which are arranged in parallel in the reactor, a first spiral blade 104 sleeved outside the first spiral shaft 102 and a second spiral blade 105 sleeved outside the second spiral shaft 103; the first helical blade 104 is arranged to rotate rightwards, the second helical blade 105 is arranged to rotate leftwards, the first helical blade 104 and the second helical blade 105 are partially overlapped, compared with a single-shaft helix, the width of the helical blade is doubled, and the conveying capacity is more than doubled; one shaft rotates leftwards, the other shaft rotates rightwards and rotates inwards in parallel, the multi-shaft screw is generally double-number in design, when in operation, the material is sheared, the material mixing and stirring device has the advantages that the material is mixed and stirred, and the material is pushed forwards by the double-shaft cooperation; the single-shaft screw conveyor does not have the function of mixing and stirring no matter which direction the single-shaft screw conveyor runs, but the double-shaft screw conveyor rotates in different directions (both rotate inwards), so when materials are put into the feeding hole, the materials can be automatically rotated to the middle to be mixed together. The mode of heating 21 external heating, and the internal heating of first heating pipeline 22 and second heating pipeline 23 has further been injectd, has improved heating efficiency, has guaranteed that the material is heated evenly, has that heating efficiency is high, the material is heated evenly, the pyrolysis is efficient, the characteristics of difficult long-pending charcoal coking. Furthermore, when the device is installed, the first spiral blade 104 and the second spiral blade 105 are overlapped by a distance of about 100mm, so that the material is conveniently sheared and simultaneously pushed to move forwards, and carbon deposition and coking in the kettle are avoided.

Further, the spiral reaction kettle also comprises a left end cover 106 arranged at the left end of the cylinder body 101 and a right end cover 107 arranged at the right end of the cylinder body 101; an air inlet of the first heating pipeline 22 is arranged on the right end cover 107, and an air outlet of the first heating pipeline 22 is arranged on the left end cover 106; the air inlet of the second heating pipeline 23 is arranged on the right end cover 107, and the air outlet is arranged on the left end cover 106.

In order to facilitate the installation, maintenance and repair of the inside of the reaction kettle, the reaction kettle further comprises an upper cover plate 108 arranged on the top surface of the cylinder 101, and the upper cover plate 108 is provided with a pressure sensor 31 and a temperature sensor 32.

In order to prevent oil gas in the reaction kettle from escaping outwards and external air from entering the reaction kettle during operation, a first sealing sleeve 109 is arranged at the left end of the first spiral shaft 102, a first bearing support 110 is arranged on the left side of the first sealing sleeve 109, and the first bearing support 110 is connected with a first spiral transmission 111; the left end of the second screw shaft 103 is provided with a second sealing sleeve 112, the left side of the second sealing sleeve 112 is provided with a second bearing support 113, and the second bearing support 113 is connected with a second screw drive 114.

In order to facilitate slag tapping, the device also comprises a slag tapping device, the slag tapping device comprises a spiral slag tapping device 3, and a feed inlet of the spiral slag tapping device 3 is connected with a discharge outlet of the spiral reaction kettle.

In order to facilitate feeding, the device also comprises a feeding device which is a spiral feeder 4, and a discharge hole of the spiral feeder 4 is connected with a feed inlet of the spiral reaction kettle.

In order to ensure the heating efficiency, as shown in fig. 3, the heating device further comprises a hot blast stove 5, the hot blast stove 5 is connected with a heating box 21, and the hot blast stove 5 is connected with an air inlet of a first heating pipeline 22 and an air inlet of a second heating pipeline 23 through a tee inlet connecting pipeline 6.

For the convenience of control, flow control valves are respectively arranged between the three-way connecting pipeline and the first heating pipeline 22 and between the three-way connecting pipeline and the second heating pipeline 23.

In order to facilitate oil gas output, the device also comprises an oil gas outlet and an oil gas outlet control valve 7 which are arranged at the top of the right side of the spiral reaction kettle.

As shown in fig. 4, in order to improve the heat utilization efficiency, a three-way outlet connecting pipe 8 connected to the air outlet of the first heating pipe 22 and the air outlet of the second heating pipe 23 is further included, and the three-way outlet connecting pipe 8 is connected to the heating box 21.

The working process of the novel waste rubber-plastic continuous internal rotation type double-helix thermal cracking system comprises the following steps:

the waste rubber and plastic materials to be treated enter a spiral reaction kettle, a first spiral blade 104 and a second spiral blade 105 are driven by a first spiral shaft 102 and a second spiral shaft 103 to simultaneously rotate inwards, and the materials are conveyed forwards while being mixed and stirred until the thermal cracking of the materials is finished; in the process, the heating box body 21 heats the materials in the spiral reaction kettle in an external heating mode, and the first heating pipeline 22 and the second heating pipeline 23 heat the materials in the reaction kettle in an internal heating mode, so that the heating efficiency is improved.

Claims

1. The utility model provides a novel old and useless rubber and plastic serialization internal rotation formula double helix thermal cracking system for useless rubber and plastic thermal cracking handles, including spiral reation kettle, its characterized in that: the spiral reaction kettle is of a U-shaped structure and comprises a cylinder body, a first spiral shaft and a second spiral shaft which are arranged in the cylinder body in parallel, a first spiral blade sleeved outside the first spiral shaft, and a second spiral blade sleeved outside the second spiral shaft; the first helical blade is arranged to rotate rightwards, the second helical blade is arranged to rotate leftwards, and the first helical blade and the second helical blade are partially overlapped; the heating device is characterized by further comprising a heating box body sleeved outside the barrel body, and a first heating pipeline and a second heating pipeline which are arranged in the barrel body.

2. The novel continuous internal rotation type double-helix thermal cracking system for waste rubber and plastic according to claim 1, which is characterized in that: the spiral reaction kettle also comprises a left end cover arranged at the left end of the cylinder body and a right end cover arranged at the right end of the cylinder body; the air inlet of the first heating pipeline is arranged on the right end cover, and the air outlet of the first heating pipeline is arranged on the left end cover; the air inlet of the second heating pipeline is arranged on the right end cover, and the air outlet of the second heating pipeline is arranged on the left end cover.

3. The novel continuous internal rotation type double-helix thermal cracking system for waste rubber and plastic according to claim 1, which is characterized in that: the cylinder is characterized by further comprising an upper cover plate arranged on the top surface of the cylinder body, and a pressure sensor and a temperature sensor are arranged on the upper cover plate.

4. The novel continuous internal rotation type double-helix thermal cracking system for waste rubber and plastic according to claim 1, which is characterized in that: the left end of the first spiral shaft is provided with a first sealing sleeve, the left side of the first sealing sleeve is provided with a first bearing support, and the first bearing support is connected with a first spiral transmission; the left end of the second screw shaft is provided with a second sealing sleeve, the left side of the second sealing sleeve is provided with a second bearing support, and the second bearing support is connected with a second screw driver.

5. The novel continuous internal rotation type double-helix thermal cracking system for waste rubber and plastic according to claim 1, which is characterized in that: still include the slag discharging device, the slag discharging device includes the spiral slag discharging device, spiral slag discharging device feed inlet with the spiral reation kettle discharge gate links to each other.

6. The novel continuous internal rotation type double-helix thermal cracking system for waste rubber and plastic according to claim 1, which is characterized in that: the spiral feeding device is a spiral feeder, and a discharge port of the spiral feeder is connected with a feed port of the spiral reaction kettle.

7. The novel continuous internal rotation type double-helix thermal cracking system for waste rubber and plastic according to claim 1, which is characterized in that: still include the hot-blast furnace, the hot-blast furnace with heating box links to each other, the hot-blast furnace pass through tee bend inlet connecting tube with first heating pipeline air intake reaches the second heating pipeline air intake links to each other.

8. The novel continuous internal rotation type double-helix thermal cracking system for waste rubber and plastic according to claim 7, which is characterized in that: the tee bend inlet connecting pipeline with between the first heating pipeline, and the tee bend inlet connecting pipeline with all be equipped with flow control valve between the second heating pipeline.

9. The novel continuous internal rotation type double-helix thermal cracking system for waste rubber and plastic according to claim 1, which is characterized in that: the device also comprises an oil gas outlet and an oil gas outlet control valve which are arranged at the top of the right side of the spiral reaction kettle.

10. The novel continuous internal rotation type double-helix thermal cracking system for waste rubber and plastic according to claim 1, which is characterized in that: still include with first heating pipeline air outlet reaches the tee bend outlet connecting tube that the second heating pipeline air outlet links to each other, tee bend outlet connecting tube with the heating box links to each other.