CN112745873A

CN112745873A - Cracking equipment

Info

Publication number: CN112745873A
Application number: CN201911039416.3A
Authority: CN
Inventors: 江艳存; 王贵山; 杨朔; 陈永强; 孙崧淘
Original assignee: Zhaoyuan Huichao New Energy Technology Co ltd
Current assignee: Zhaoyuan Huichao New Energy Technology Co ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2021-05-04
Also published as: WO2021082597A1

Abstract

The application discloses cracking equipment, which comprises a cracking cylinder and a combustion cylinder, wherein the combustion cylinder is arranged on the periphery of the cracking cylinder in a sealing manner, and the cracking cylinder rotates relative to the combustion cylinder which is fixedly arranged; the device is characterized by further comprising a pushing spiral which is spirally arranged on the outer cylinder wall of the cracking cylinder and is positioned in the combustion cylinder, and the peripheral edge of the pushing spiral is close to the inner cylinder wall of the combustion cylinder. The pushing spiral rotates along with the rotation of the cracking cylinder, the pushing spiral pushes the energy materials in the combustion cylinder to the other end from one end of the combustion cylinder, the concentrated accumulation of the solid energy materials in the combustion cylinder is avoided, the solid energy materials are combusted more uniformly and fully, the combustion efficiency of the combustion cylinder is improved, and the thermal efficiency of the cracking equipment is further improved.

Description

Cracking equipment

Technical Field

The invention relates to the technical field of organic matter cracking, in particular to cracking equipment.

Background

The cracking equipment is common production equipment in the chemical field and is used for heating and cracking organic matters to obtain required substances. The existing cracking equipment mainly comprises a cracking cylinder and a combustion cylinder, wherein the combustion cylinder is sleeved on the periphery of the cracking cylinder, the combustion cylinder which is fixedly arranged relative to the cracking cylinder is in rotary motion, organic materials are rolled and moved in the cracking cylinder, and heat generated by combustion energy substances in the combustion cylinder is transferred to the organic materials in the cracking cylinder through the cylinder wall of the cracking cylinder. However, the energy substances in the combustion cylinder are characterized in that solid energy substances are easily accumulated in the combustion cylinder in a concentrated manner, so that the combustion is not uniform and sufficient, and the combustion efficiency is low.

In summary, how to solve the problem of low combustion efficiency of the combustion cylinder becomes a problem to be solved urgently by those skilled in the art.

Disclosure of Invention

In view of the above, the present invention is directed to a cracking apparatus to improve the combustion efficiency of a combustion can.

In order to achieve the purpose, the invention provides the following technical scheme:

the cracking equipment comprises a cracking cylinder and a combustion cylinder, wherein the combustion cylinder is hermetically sleeved on the periphery of the cracking cylinder, and the cracking cylinder rotates relative to the combustion cylinder which is fixedly arranged; the device is characterized by further comprising a pushing spiral which is spirally arranged on the outer cylinder wall of the cracking cylinder and is positioned in the combustion cylinder, and the peripheral edge of the pushing spiral is close to the inner cylinder wall of the combustion cylinder.

Preferably, in the cracking apparatus, the pushing screw has a pushing direction opposite to a material conveying direction of the cracking cylinder.

Preferably, in the cracking apparatus, the pushing screw is a continuous screw or a segmented screw.

Preferably, in the cracking apparatus, the pushing screw is a sheet screw.

Preferably, in the cracking apparatus described above, the apparatus further includes a gas communication cavity which is arranged in the cracking cylinder and is isolated from the inside of the cracking cylinder, the gas communication cavity is in gas communication with the combustion cylinder through a communication hole which is formed in the wall of the cracking cylinder, and is used for introducing the heating gas of the combustion cylinder into the gas communication cavity, and the wall of the gas communication cavity is used for transferring heat with the material in the cracking cylinder.

Preferably, in the cracking apparatus, the gas communication chamber is a continuous chamber structure or a plurality of separate chamber structures.

Preferably, in the cracking apparatus, the gas communication cavity is one or more spiral cavities, the spiral cavities extend spirally along an axial direction of the cracking cylinder, a spiral material channel is formed between a sidewall of the spiral cavity and a wall of the cracking cylinder, one or more communication holes are formed in a wall of the spiral cavity, which is attached to or shared by the cracking cylinder, and the communication holes are arranged along a spiral direction.

Preferably, in the cracking apparatus, the spiral structure cavity is an annular spiral structure cavity, and a radial distance exists between an inner ring of the annular spiral structure cavity and an axis of the cracking cylinder.

Preferably, in the cracking apparatus, the combustion cylinder is provided with an observation port, a combustion port, a gas inlet/outlet, and a waste outlet.

Preferably, in the cracking apparatus, the cracking drum includes a feeding drum section, a reaction drum section and a discharging drum section, which are connected in sequence, and a material turning and guiding mechanism is arranged in the feeding drum section and the discharging drum section.

Preferably, in the cracking apparatus, the material turning and guiding mechanism includes a plurality of V-shaped material turning plates or arc-shaped material turning plates arranged along a circumferential direction and fixed on the inner wall of the cracking cylinder, the directions of the concave angles of the V-shaped material turning plates and the concave surfaces of the arc-shaped material turning plates are both the same as the rotation direction of the cracking cylinder, one ends of the V-shaped material turning plates and the arc-shaped material turning plates are fixed with the inner end surface of the cracking cylinder, and the other ends are free ends.

Preferably, in the cracking apparatus, the material turning and guiding mechanism further includes baffles disposed at the concave corner of the V-shaped material turning plate and the concave part of the arc-shaped material turning plate, and used for covering the material.

Compared with the prior art, the invention has the beneficial effects that:

the cracking equipment provided by the invention comprises a cracking cylinder and a combustion cylinder, wherein the combustion cylinder is hermetically sleeved on the periphery of the cracking cylinder, and the cracking cylinder rotates relative to the combustion cylinder which is fixedly arranged; the device also comprises a pushing spiral which is spirally arranged on the outer cylinder wall of the cracking cylinder and is positioned in the combustion cylinder, and the peripheral edge of the pushing spiral is close to the inner cylinder wall of the combustion cylinder. The pushing spiral rotates along with the rotation of the cracking cylinder, the pushing spiral pushes the energy materials in the combustion cylinder to the other end from one end of the combustion cylinder, the concentrated accumulation of the solid energy materials in the combustion cylinder is avoided, the solid energy materials are combusted more uniformly and fully, the combustion efficiency of the combustion cylinder is improved, and the thermal efficiency of the cracking equipment is further improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a cracking apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic side view of the cracking apparatus of FIG. 1;

FIG. 3 is a schematic structural diagram of a cracking cylinder of a cracking apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a combustion cylinder of a cracking apparatus according to an embodiment of the present invention;

FIG. 5 is a schematic side view of FIG. 4;

FIG. 6 is a schematic view of a wall structure of a cracking cylinder of a cracking apparatus according to an embodiment of the present invention;

fig. 7 is a schematic axial sectional structure diagram of a cracking cylinder of a cracking apparatus according to an embodiment of the present invention.

Wherein, 1 is a cracking cylinder, 2 is a combustion cylinder, 21 is a gas inlet and outlet, 22 is a base, 23 is a combustion port, 24 is a top cover, 3 is a gas communicating cavity, 4 is a communicating hole, 5 is a spiral material channel, 6 is a material turning and guiding mechanism, 61 is a V-shaped material turning plate, 62 is a baffle plate, and 7 is a material pushing spiral.

Detailed Description

The core of the invention is to provide a cracking device, which improves the combustion efficiency of the combustion cylinder.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, an embodiment of the present invention provides a cracking apparatus, including a cracking cylinder 1 and a combustion cylinder 2, wherein the combustion cylinder 2 is hermetically sleeved on an outer periphery of the cracking cylinder 1, and the cracking cylinder 1 rotates relative to the combustion cylinder 2 which is fixedly disposed; the cracking equipment also comprises a pushing spiral 7 which is spirally arranged on the outer cylinder wall of the cracking cylinder 1 and is positioned in the combustion cylinder 2, and the peripheral edge of the pushing spiral 7 is close to the inner cylinder wall of the combustion cylinder 2.

During operation, the energy substance burns in the combustion cylinder 2, provides heat for the cracking cylinder 1, pushes away the material spiral 7 and rotates along with the rotation of cracking cylinder 1, pushes away the material spiral 7 and will burn the energy substance in the cylinder 2 and push to the other end by the one end of combustion cylinder 2, has avoided the solid energy substance to concentrate in the combustion cylinder 2 and has piled up, makes the solid energy substance burning more even and abundant, has improved the combustion efficiency of the combustion cylinder 2, and then has improved the thermal efficiency of cracking equipment.

Further, in the present embodiment, the pushing screw 7 has a pushing direction opposite to the material conveying direction of the cracking cylinder 2. The pushing spiral 7 is used for moving the solid material in the combustion cylinder 2 from one end close to the discharge end of the cracking cylinder 1 to one end close to the feed end of the cracking cylinder 1, so that the moving direction of the energy material is opposite to the moving direction of the organic material in the cracking cylinder 1, the mutual balance between the heat generated by the combustion of the energy material in the combustion cylinder 2 and the heat absorbed by the material in the cracking cylinder 1 is ensured, and the utilization rate of the heat is improved. Of course, the pushing direction of the pushing spiral 7 can also be the same as the material conveying direction in the cracking cylinder 1, and the heat utilization rate is not as good as that of the reverse arrangement.

Preferably, in this embodiment, the pushing spiral 7 is a continuous spiral or a segmented spiral, that is, the pushing spiral 7 is a complete continuous spiral structure, or the pushing spiral 7 is a segmented spiral composed of multiple sections of spiral structures arranged axially. The configuration is not limited to the embodiment described above as long as the movement of the solid energy substance in the combustion cylinder 2 can be achieved.

Further, in this embodiment, the pushing spiral 7 is a sheet spiral, and the sheet spiral is a single sheet spirally wound on the outer wall of the cracking cylinder 1, so that the structure is simple. Certainly, the pushing spiral 7 is a spiral wall structure surrounded by double-layer plates, and has a complex structure, but can also play a pushing role.

As shown in fig. 1-3, in this embodiment, the cracking apparatus further includes a gas communicating cavity 3 disposed in the cracking cylinder 1 and isolated from the inside of the cracking cylinder 1, the gas communicating cavity 3 is in gas communication with the combustion cylinder 2 through a communicating hole 4 formed in the wall of the cracking cylinder 1, for introducing the heating gas of the combustion cylinder 2 into the gas communicating cavity 3, and the wall of the gas communicating cavity 3 is used for transferring heat with the material in the cracking cylinder 1.

The working process of the cracking equipment is as follows: the material enters the cracking cylinder 1, along with the rotation of the cracking cylinder 1, in order to ensure the cracking effect, the cracking cylinder 1 rotates slowly, the material slides and moves along the cylinder wall in the cracking cylinder 1, in the process, the heat in the combustion cylinder 2 is transferred into the cracking cylinder 1 through the cylinder wall of the cracking cylinder 1, the material contacts with the cylinder wall to transfer heat in the sliding process in the cracking cylinder 1, meanwhile, the heating gas of the combustion cylinder 2 is introduced into the gas communication cavity 3, the cavity wall of the gas communication cavity 3 contacts with the material to transfer heat, and radiates heat into the cracking cylinder 1 through the cavity wall of the gas communication cavity 3, compared with the prior method that the material in the cracking cylinder 1 is heated only through the cylinder wall, the heat transfer area in the cracking cylinder 1 is greatly increased through the cavity wall of the gas communication cavity 3, the heat transfer efficiency and the heat energy utilization rate are improved, and the fast proceeding of the cracking reaction is facilitated, the reaction time is saved.

In this embodiment, the gas communication cavity 3 is a continuous cavity structure or a plurality of separated cavity structures. A continuous cavity structure is in gas communication with the combustion cylinder 2, or a plurality of split cavity structures are in gas communication with the combustion cylinder 2 respectively, so long as the heating gas in the combustion cylinder 2 can be introduced into the gas communication cavity 3, the heat transfer area in the cracking cylinder 1 is increased, and the multidirectional heating of the material is realized.

No matter the gas communication cavity 3 is a continuous cavity structure or a plurality of split cavity structures, the shape and size of the cavity structure are not limited, and the cavity structure can be any shape, such as a strip-shaped cavity structure, a block-shaped cavity structure, a special-shaped cavity structure and the like, and can be randomly arranged in the cracking cylinder 1, such as axial arrangement, transverse arrangement and the like along the cracking cylinder 1, as long as the materials can be ensured to circulate in the cracking cylinder 1, and heat is transferred through the cavity structure.

In this embodiment, the gas communication chamber 3 and the combustion cylinder 2 are kept in gas communication via a communication hole 4 formed in the wall of the cracking cylinder 1. The communicating hole 4 can enable the heating gas in the combustion cylinder 2 to enter the gas communicating cavity 3, and solid or liquid materials in the combustion cylinder 2 can be reduced or avoided to enter the gas communicating cavity 3 through the communicating hole 4 as much as possible, and because the combustion cylinder 2 is fixedly arranged, the solid or liquid materials usually stay at the bottom of the combustion cylinder 2 and are not easy to enter the communicating hole 4, and the heating gas in the combustion cylinder 2 can diffuse and convect and enter the gas communicating cavity 3 through the communicating hole 4, so that the heating gas can better flow in the gas communicating cavity 3 to transfer heat.

Of course, the shape, size and number of the communication holes 4 are not limited in this embodiment, and the communication holes 4 may be any shape, such as circular, rectangular, oval, quincunx, etc., as long as it is advantageous for the gas to pass through, and the size of the communication holes 4 depends on the heating requirement, and if the heating requirement is large, a larger communication hole 4 may be provided to ensure sufficient circulation of the heating gas, and conversely, a smaller communication hole 4 may be provided. The number of the communication holes 4 is also set according to the heating requirement, the more the number of the communication holes 4 is, the smoother the circulation of the heating gas in the gas communication cavity 3 is, the faster the heating speed is, otherwise, the slower the heating speed is, but the solid and liquid materials in the combustion cylinder 2 are prevented from entering the gas communication cavity 3 as much as possible.

Further, in this embodiment, a side cavity wall of the gas communication cavity 3 is attached to and fixed to or shared with an inner wall of the cracking cylinder 1, that is, the gas communication cavity 3 is located and fixed on the inner cylinder wall of the cracking cylinder 1, and a side cavity wall of the gas communication cavity 3 used for being located may be an independent cavity wall or may be shared with the inner wall of the cracking cylinder 1. The communicating hole 4 is arranged on the wall of the gas communicating cavity 3 which is jointed or shared with the cracking cylinder 1, and the gas communicating cavity 3 and the combustion cylinder 2 are kept in gas communication through the communicating hole 4. By fixing the gas communication cavity 3 on the wall of the cracking cylinder 1, the opportunity of heat transfer by contact with the wall of the cavity of the gas communication cavity 3 is increased in the process that the material in the cracking cylinder 1 slides along the wall of the cracking cylinder 1, and the moving speed of the material is delayed, thereby further improving the heat transfer efficiency.

Of course, the gas communication cavity 3 may also be suspended in the cracking cylinder 1, and the cavity wall of the gas communication cavity 3 is not in contact with the inner cylinder wall of the cracking cylinder 1, but is suspended and fixed by the supporting structure. Correspondingly, the gas communication cavity 3 is communicated with the communication hole 4 on the wall of the cracking cylinder 1 through a communication pipe, so that the gas communication is realized. So set up, the material is in the in-process that the pyrolysis cylinder 1 removed, probably rarely contacts with the cavity wall of gas intercommunication cavity 3, nevertheless carries out heat radiation heating through the cavity wall of gas intercommunication cavity 3, can improve heat transfer efficiency equally.

As shown in fig. 1-3, in this embodiment, the gas communication cavity 3 is preferably one or more sets of spiral cavities, the spiral cavities extend spirally along the axial direction of the cracking cylinder 1, the side wall of the spiral cavity and the wall of the cracking cylinder 1 form a spiral material channel 5, the sets of spiral cavities are sequentially arranged along the axial direction of the cracking cylinder 1 and combined to form a continuous spiral material channel 5, and a spiral gas channel is formed inside the spiral cavities. After so setting up, the space in helical structure cavity can make full use of the pyrolysis cylinder 1 provides radial and axial thermal convection, heat-conduction, heat radiation passageway between pyrolysis cylinder 1 and combustion cylinder 2, greatly increased heat transfer area. During operation, the material gets into in the cracker 1 back by the feed end of cracker 1, along with the rotation of cracker 1, the material is removed to the discharge end by the feed end of cracker 1 gradually in spiral material passageway 5, and the material is ordered about by rotatory helical structure cavity and is moved backward voluntarily, consequently, cracker 1 can adopt the form that the level was placed, need not make the feed end be higher than the discharge end slope setting. In the process that the material moves in the spiral material channel 5, the material is in contact with the side wall of the spiral structure cavity and the wall of the cracking cylinder 1 all the time to conduct heat, the running path of the material is prolonged, the retention time of the material in the cracking cylinder 1 is prolonged, the material is fully heated, the heat transfer efficiency is further improved, and the cracking reaction is more favorably carried out.

Of course, if the gas communication cavity 3 does not adopt the helical structure cavity, in order to make things convenient for the material to move to the discharge end by the feed end, the feed end of the cracking barrel 1 is higher than the discharge end slope setting, utilizes the material dead weight and the rotation of the cracking barrel 1 to realize the automatic movement of material.

As shown in fig. 6, in the present embodiment, one or more communication holes 4 are opened on the wall of the spiral cavity attached to or shared by the cracking cylinder 1, and the plurality of communication holes 4 are arranged along the spiral direction. If a communication hole 4 is provided, the heating gas with a certain pressure in the combustion cylinder 2 enters the spiral structure cavity through the communication hole 4, in order to make the heating gas fill the spiral structure cavity, the communication hole 4 is arranged at one end of the spiral structure cavity, the heating gas gradually fills the whole cavity from one end of the spiral structure cavity, the communication hole 4 is preferably arranged at one end of the spiral structure cavity close to the discharge end, the flow direction of the heating gas is opposite to the material moving direction, and the heat transfer efficiency is further improved. If a plurality of communication holes 4 are provided, the plurality of communication holes 4 are arranged in the spiral direction of the spiral structure chamber, and preferably, the plurality of communication holes 4 are uniformly distributed to further improve the uniformity of gas heat transfer.

Further, as shown in fig. 7, in the present embodiment, the spiral structure cavity is an annular spiral structure cavity, and a radial distance exists between an inner ring of the annular spiral structure cavity and the axis of the cracking cylinder 1. So set up, the central part of annular helical structure cavity forms the axial hollow region who link up 1 of pyrolysis tube, and the gas that the pyrolysis produced in 1 of pyrolysis tube can circulate through hollow region more smoothly.

Of course, the spiral structure cavity can also have no hollow area, so that the gas generated by the cracking in the cracking cylinder 1 can also be conveyed in the spiral material channel 5 in a spiral manner, and only the path for conveying the gas is longer.

Preferably, in the embodiment, the difference between the outer ring diameter and the inner ring diameter of the annular spiral structure cavity is greater than 5cm, and the difference between the outer ring diameter and the inner ring diameter of the annular spiral structure cavity is determined according to the heating requirement and the gas conveying requirement in the cracking cylinder 1. The difference value is determined by ensuring the temperature difference between the combustion cylinder 2 and the cracking cylinder 1, so that the materials can be cracked fully and simultaneously, the quick coking is avoided.

Preferably, in this embodiment, the width between the two sidewalls of the spiral cavity is 1cm to 100cm, and the width determines the size of the gas spiral channel inside the spiral cavity, thereby determining the size of the heating amount and the size of the heat dissipation area, and ensuring the convection and turbulence of the hot gas flow. More preferably, the width between the two side walls is about 50 cm.

In this embodiment, the pitch of the spiral cavity is equal pitch or variable pitch, and the pitch is greater than 1 cm. And determining the form and the size of the screw pitch according to the temperature gradient and the carbonization requirement of different axial sections in the cracking cylinder 1.

As shown in fig. 4 and 5, the combustion cylinder 2 is optimized, in the embodiment, the combustion cylinder 2 includes a base 22 and a top cover 24, the top cover 24 is sealed on the top of the base 22 to form a sealed cylinder, and the cylinder is provided with a combustion port 23, a gas inlet/outlet 21, an observation port and a waste outlet. The combustion cylinder 2 is used for combusting energy substances, such as liquid energy substances, solid energy substances and the like, the generated heating gas enters the gas communication cavity 3 through the communication holes 4 on the cylinder wall of the cracking cylinder 1, and the residual waste after combustion is discharged out of the combustion cylinder 2 through a waste outlet. The gas inlet/outlet 21 is used for gas discharge from the combustion cylinder 2 and external gas intake. The burner port 23 is used to ignite the source substance in the combustion cylinder 2. The observation port is used for observing the combustion condition in the combustion cylinder 2.

Further, in this embodiment, the cracking cylinder 1 includes a feeding cylinder section 11, a reaction cylinder section 12 and a discharging cylinder section 13 connected in sequence, and the material turning and guiding mechanism 6 is disposed in the feeding cylinder section 11 and the discharging cylinder section 13. Along with the rotation of the cracking cylinder 1, the material in the feeding cylinder section 11 enters the spiral material channel 5 through the material turning and guiding mechanism 6 in the feeding cylinder section 11, and the material in the spiral material channel 5 enters the discharge hole through the material turning and guiding mechanism 6 in the discharging cylinder section 13 and is discharged out of the cracking cylinder 1.

As an optimization, in this embodiment, the material turning and guiding mechanism 6 includes a plurality of V-shaped material turning plates 61 or arc-shaped material turning plates arranged along the circumferential direction and fixed on the inner wall of the cracking cylinder 1, the directions of the concave angles of the V-shaped material turning plates 61 and the concave surfaces of the arc-shaped material turning plates are the same as the rotation direction of the cracking cylinder 1, one ends of the V-shaped material turning plates 61 and the arc-shaped material turning plates are fixed with the inner end surface of the discharge end of the cracking cylinder 1, and the other ends are free ends. Wherein, the V-shaped material turning plate 61 is formed by combining two plates into a V-shaped structure.

Taking the V-shaped material turning plate 61 as an example for explanation, the working principle is as follows: along with the rotation of the cracking cylinder 1, the material constantly gets into the entrance point of V-arrangement material turnover plate 61, because the reentrant angle orientation of V-arrangement material turnover plate 61 is the same with the direction of rotation of cracking cylinder 1, consequently, the in-process that V-arrangement material turnover plate 61 removed to the eminence by the low, lift the material on the wall of cracking cylinder 1 section of thick bamboo, make the material remove to the discharge end direction and gather in the reentrant angle, along with the in-process that V-arrangement material turnover plate 61 removed from the eminence to the low, when gathering the material in reentrant angle department and beginning to shed, the material removed to the discharge gate of discharge end along a board that V-arrangement material turnover plate 61 is close to the discharge end, the stirring and the derivation of material have been realized.

Similarly, the arc material turnover plate moves the materials on the wall of the cracking cylinder 1 to the inner concave surface from the low position to the high position, and the arc material turnover plate throws the materials at the inner concave surface and guides the materials to the discharge hole along the plate surface of the arc material turnover plate in the process of moving from the high position to the low position.

Further, in this embodiment, the concave corner baffle of the V-shaped material turning plate 61 is further provided with a baffle 62 for pocket material, so that the material is better accumulated by the baffle 62, and the material is lifted to a high place for throwing. Similarly, the concave part of the arc-shaped material turning plate is also provided with a baffle 62 for covering materials.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The cracking equipment comprises a cracking cylinder (1) and a combustion cylinder (2), wherein the combustion cylinder (2) is hermetically sleeved on the periphery of the cracking cylinder (1), and the cracking cylinder (1) rotates relative to the combustion cylinder (2) which is fixedly arranged; the device is characterized by further comprising a pushing spiral (7) which is spirally arranged on the outer cylinder wall of the cracking cylinder (1) and is positioned in the combustion cylinder (2), and the peripheral edge of the pushing spiral (7) is close to the inner cylinder wall of the combustion cylinder (2).

2. The cracking apparatus according to claim 1, characterized in that the pushing screw (7) is in a pushing direction opposite to the material conveying direction of the cracking drum (1).

3. The cracking plant according to claim 1, characterized in that the pushing screw (7) is a continuous screw or a segmented screw.

4. The cracking apparatus according to claim 1, characterized in that the pusher screw (7) is a plate screw.

5. The cracking apparatus according to any one of claims 1-4, further comprising a gas communication cavity (3) disposed in the cracking drum (1) and isolated from the interior of the cracking drum (1), wherein the gas communication cavity (3) is in gas communication with the combustion drum (2) through a communication hole (4) formed in the wall of the cracking drum (1) for introducing the heating gas of the combustion drum (2) into the gas communication cavity (3), and the wall of the gas communication cavity (3) is used for transferring heat with the material in the cracking drum (1).

6. Cracking device according to claim 5, characterized in that the gas communication chamber (3) is one continuous chamber structure or a plurality of separate chamber structures.

7. The cracking equipment according to claim 6, wherein the gas communication cavity (3) is one or more groups of spiral structure cavities, the spiral structure cavities spirally extend along the axial direction of the cracking cylinder (1), the side wall of the spiral structure cavity and the wall of the cracking cylinder (1) form a spiral material channel (5), one or more communication holes (4) are formed on the wall of the spiral structure cavity, which is attached to or shared by the cracking cylinder (1), and the plurality of communication holes (4) are arranged along the spiral direction.

8. Cracking device according to claim 7, characterized in that the spiral-structured chamber is an annular spiral-structured chamber, with a radial spacing between the inner ring of the annular spiral-structured chamber and the axis of the cracking drum (1).

9. The cracking plant according to any of claims 1-5, characterized in that the combustion can has a viewing port (22), a combustion port (23), a gas inlet/outlet (21) and a waste outlet (24) arranged on the body.

10. The cracking equipment according to claim 7, wherein the cracking cylinder (1) comprises a feeding cylinder section (11), a reaction cylinder section (12) and a discharging cylinder section (13) which are connected in sequence, and a material turning and guiding mechanism (6) is arranged in the feeding cylinder section (11) and the discharging cylinder section (13).

11. The cracking apparatus according to claim 10, wherein the material turning and guiding mechanism (6) comprises a plurality of V-shaped material turning plates (61) or arc-shaped material turning plates which are arranged along the circumferential direction and fixed on the inner wall of the cracking drum (1), the directions of the concave angles of the V-shaped material turning plates (61) and the concave surfaces of the arc-shaped material turning plates are the same as the rotation direction of the cracking drum (1), one ends of the V-shaped material turning plates (61) and the arc-shaped material turning plates are fixed with the inner end surface of the cracking drum (1), and the other ends are free ends.

12. The cracking equipment according to claim 11, wherein the material turning and guiding mechanism (6) further comprises baffles (62) arranged at the concave corners of the V-shaped material turning plates (61) and the concave parts of the arc-shaped material turning plates for material pocket.