WO2021023168A1

WO2021023168A1 - Rotary pyrolysis device

Info

Publication number: WO2021023168A1
Application number: PCT/CN2020/106682
Authority: WO
Inventors: 江艳存; 王贵山
Original assignee: 招远市汇潮新能源科技有限公司
Priority date: 2019-08-07
Filing date: 2020-08-04
Publication date: 2021-02-11
Also published as: CN112342037A

Abstract

The present application discloses a rotary pyrolysis device, comprising a pyrolysis cylinder and a heating cylinder, the heating cylinder being sheathed on the outer periphery of the pyrolysis cylinder in a sealed manner, and the pyrolysis cylinder performing a rotation movement relative to the fixedly provided heating cylinder; further comprising a gas communication cavity provided inside the pyrolysis cylinder and isolated from the interior of the pyrolysis cylinder, the gas communication cavity being in communication with the heating cylinder for introducing the heated gas of the heating cylinder into the gas communication cavity, and a cavity wall of the gas communication cavity being used for transferring heat to the material inside the pyrolysis cylinder. Compared with heating the material in the pyrolysis cylinder only by the cylinder wall thereof in the prior art, the heated gas of the heating cylinder in the present application is introduced into the gas communication cavity, the heat transfer area inside the pyrolysis cylinder is greatly increased by means of the cavity wall of the gas communication cavity, allowing the material to perform contact heat transfer simultaneously with the cavity wall of the gas communication cavity and the inner cylinder wall of the pyrolysis cylinder, improving the heat transfer efficiency and the utilization rate of thermal energy, facilitating the progress of the pyrolysis reaction.

Description

Rotary cracking equipment

This application claims the priority of a Chinese patent filed with the Chinese Patent Office on August 7, 2019, with the application number of 201910725576.7 and the title of the invention "a rotary cracking device", the entire content of which is incorporated into this application by reference.

Technical field

The invention relates to the technical field of chemical equipment, in particular to a rotary cracking equipment.

Background technique

Cracking equipment is a common production equipment in the chemical industry. It is used to heat and crack organic matter to obtain the required material. The existing cracking equipment mainly includes a cracking cylinder and a heating cylinder. The heating cylinder is sleeved on the periphery of the cracking cylinder. The cracking cylinder rotates relative to the fixed heating cylinder. The organic material rolls and moves in the cracking cylinder. The heat generated by the heating cylinder passes through the cracking. The barrel wall of the barrel transmits the organic material in the cracking barrel. However, the heat transfer efficiency of the cracking equipment is low, which is not conducive to the cracking of organic matter.

In summary, how to improve the heat transfer efficiency of cracking equipment has become an urgent problem for those skilled in the art.

Summary of the invention

In view of this, the purpose of the present invention is to provide a rotary cracking device to improve heat transfer efficiency.

To achieve the above objective, the present invention provides the following technical solutions:

A rotary cracking device, comprising a cracking cylinder and a heating cylinder, the heating cylinder is sealingly sleeved on the outer periphery of the cracking cylinder, and the cracking cylinder rotates relative to a fixed heating cylinder; further comprising a cracking cylinder arranged in the cracking cylinder. The gas communication cavity is isolated from the inside of the cracking cylinder, the gas communication cavity is in communication with the heating cylinder, and is used to introduce the heating gas of the heating cylinder into the gas communication cavity. The cavity wall communicating with the cavity is used for heat transfer with the material in the cracking cylinder.

Preferably, in the above-mentioned rotary cracking equipment, the gas communication cavity is a continuous cavity structure or a plurality of divided cavity structures.

Preferably, in the above-mentioned rotary cracking device, the gas communication cavity and the heating cylinder are in gas communication through a communicating hole opened in the cylinder wall of the cracking cylinder.

Preferably, in the above-mentioned rotary cracking equipment, one side cavity wall of the gas communicating cavity is fixed or shared with the inner wall of the cracking cylinder, and the gas communicating cavity is attached to or shared with the cracking cylinder. The wall of the cylinder is provided with a communication hole, and the gas communication cavity and the heating cylinder maintain gas communication through the communication hole.

Preferably, in the above-mentioned rotary cracking equipment, the gas communication cavity is one or more groups of spiral structure cavities, the spiral structure cavities spirally extend along the axial direction of the cracking cylinder, and the spiral structure cavity The side wall and the cylinder wall of the cracking cylinder form a spiral material channel.

Preferably, in the above-mentioned rotary cracking equipment, one or more communicating holes are opened on the wall of the spiral structure cavity which is attached to or shared by the cracking cylinder, and the plurality of communicating holes are arranged along the spiral direction.

Preferably, in the above-mentioned rotary cracking equipment, the spiral structure cavity is an annular spiral structure cavity, and there is a radial distance between the inner ring of the annular spiral structure cavity and the axis of the cracking cylinder.

Preferably, in the above-mentioned rotary cracking device, the difference between the outer ring diameter and the inner ring diameter of the annular spiral structure cavity is greater than 5 cm.

Preferably, in the above-mentioned rotary cracking device, the width between the two side walls of the spiral structure cavity is 1 cm to 100 cm.

Preferably, in the above-mentioned rotary cracking equipment, the pitch of the spiral structure cavity is equal pitch or variable pitch, and the pitch is greater than 1 cm.

Preferably, in the above-mentioned rotary cracking equipment, the heating cylinder is a combustion cylinder for burning energy to generate hot gas;

Or an electric heating device is provided in the heating cylinder to heat the gas in the heating cylinder;

Or, the heating cylinder is connected with an external hot gas source for passing hot gas into the heating cylinder.

Preferably, in the above-mentioned rotary cracking equipment, an observation port, an ignition port, a gas inlet and outlet, and a waste outlet are provided on the barrel of the combustion cylinder.

Preferably, the above-mentioned rotary pyrolysis equipment further includes a temperature sensor and/or a pressure sensor arranged in the heating cylinder and/or the pyrolysis cylinder.

Preferably, in the above-mentioned rotary cracking equipment, the cracking cylinder is driven to rotate by a driving device.

Preferably, in the above-mentioned rotary pyrolysis equipment, the two ends of the heating cylinder and the outer cylinder wall of the pyrolysis cylinder are connected by a contact friction type rotary sealing connection.

Preferably, in the above-mentioned rotary pyrolysis equipment, a material turning-out mechanism is provided in the pyrolysis cylinder near the discharge end.

Preferably, in the above-mentioned rotary cracking equipment, the turning-out mechanism includes a plurality of V-shaped turning plates or arc-shaped turning plates arranged in a circumferential direction and fixed on the inner wall of the cracking cylinder, The direction of the concave angle of the V-shaped turning plate and the direction of the inner concave surface of the arc-shaped turning plate are the same as the rotation direction of the cracking cylinder, and one end of the V-shaped turning plate and the arc-shaped turning plate It is fixed with the inner end surface of the discharge end of the cracking cylinder, and the other end is a free end.

Preferably, in the above-mentioned rotary pyrolysis equipment, the material turning-out mechanism further includes baffles arranged at the concave corners of the V-shaped turning plate and the inner recess of the arc-shaped turning plate for feeding materials.

Compared with the prior art, the beneficial effects of the present invention are:

In the rotary cracking equipment provided by the present invention, a gas communication cavity isolated from the inside of the cracking cylinder is provided in the cracking cylinder that is rotated relative to the heating cylinder, and the gas communication cavity is connected with the heating cylinder for introducing the heating gas of the heating cylinder into the gas In the communicating cavity, the cavity wall of the gas communicating cavity is used for heat transfer with the material in the cracking cylinder. Compared with the prior art that only uses the wall of the cracking cylinder to heat the material therein, the heating gas of the heating cylinder of this application is introduced into the gas communicating cavity, and the cavity wall of the gas communicating cavity greatly increases the inside of the cracking cylinder. The heat transfer area allows the material and gas to communicate with the cavity wall of the cavity and the inner cylinder wall of the cracking cylinder to conduct contact heat transfer at the same time, which improves the heat transfer efficiency and the utilization rate of heat energy and is more conducive to the cracking reaction.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only It is an embodiment of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without creative work.

Fig. 1 is a schematic front view of a rotary cracking device provided by an embodiment of the present invention;

2 is a schematic structural diagram of a cross-section of a rotary cracking device provided by an embodiment of the present invention;

3 is a schematic diagram of the wall structure of a cracking cylinder of a rotary cracking equipment provided by an embodiment of the present invention;

4 is a schematic diagram of an axial cross-sectional structure of a cracking cylinder of a rotary cracking equipment provided by an embodiment of the present invention;

Fig. 5 is a schematic side view of a heating cylinder of a rotary cracking equipment provided by an embodiment of the present invention.

Among them, 1 is the cracking cylinder, 2 is the heating cylinder, 21 is the gas inlet and outlet, 22 is the observation port, 23 is the ignition port, 24 is the waste outlet, 3 is the gas communication cavity, 4 is the communication hole, and 5 is the spiral material channel , 6 is the turning-out mechanism, 61 is the V-shaped turning plate, and 62 is the baffle.

detailed description

The core of the present invention is to provide a rotary cracking equipment, which improves the heat transfer efficiency.

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Please refer to Figures 1 to 4, an embodiment of the present invention provides a rotary pyrolysis device, including a pyrolysis cylinder 1 and a heating cylinder 2. The heating cylinder 2 is sealed and sleeved on the outer periphery of the pyrolysis cylinder 1, and the pyrolysis cylinder 1 is relatively fixed for heating The cylinder 2 rotates, and the rotary cracking equipment also includes a gas communication cavity 3 arranged in the cracking cylinder 1 and isolated from the inside of the cracking cylinder 1. The gas communicating cavity 3 is connected with the heating cylinder 2 to heat the heating cylinder 2. The gas is introduced into the gas communication cavity 3, and the cavity wall of the gas communication cavity 3 is used for heat transfer with the material in the cracking cylinder 1.

The working process of the rotary cracking equipment is: the material enters the cracking cylinder 1, as the cracking cylinder 1 rotates, in order to ensure the cracking effect, the cracking cylinder 1 rotates slowly, and the material slides and moves along the cylinder wall in the cracking cylinder 1, during this process , The heat in the heating cylinder 2 is transferred to the cracking cylinder 1 through the cylinder wall of the cracking cylinder 1, and the material contacts the cylinder wall to transfer heat during the process of sliding down in the cracking cylinder 1. At the same time, the heating gas of the heating cylinder 2 is introduced into the gas communication In the cavity 3, the cavity wall of the gas-communicating cavity 3 contacts the material to transfer heat, and the cavity wall of the gas-communicating cavity 3 radiates heat into the cracking cylinder 1, compared to the existing pyrolysis cylinder only. The wall of the cylinder 1 heats the materials therein. In the present application, the cavity wall of the cavity 3 is connected with gas to greatly increase the heat transfer area inside the cracking cylinder 1, which improves the heat transfer efficiency and heat energy utilization rate, and is more conducive to the cracking reaction The rapid progress saves reaction time.

In this embodiment, the gas communication cavity 3 is a continuous cavity structure or a plurality of separate cavity structures. A continuous cavity structure is in gas communication with the heating cylinder 2, or multiple separate cavity structures are in gas communication with the heating cylinder 2, as long as the heating gas in the heating cylinder 2 can be introduced into the gas communication cavity 3. , In order to increase the heat transfer area in the cracking cylinder 1 to realize the multi-directional heating of the material.

Regardless of whether the gas communication cavity 3 is a continuous cavity structure or a multi-part cavity structure, the shape and size of the cavity structure are not limited, and can be any shape, such as a strip cavity structure or a block shape. The cavity structure, special-shaped cavity structure, etc., can also be arbitrarily arranged in the pyrolysis cylinder 1, such as along the axial and transverse directions of the pyrolysis cylinder 1, as long as the materials can circulate in the pyrolysis cylinder 1 and pass through the cavity structure. Just hot.

In this embodiment, the gas communication cavity 3 and the heating cylinder 2 maintain gas communication through a communication hole 4 opened in the cylinder wall of the cracking cylinder 1. The communication hole 4 can allow the heating gas in the heating cylinder 2 to enter the gas communication cavity 3, and minimize or prevent the solid or liquid material in the heating cylinder 2 from entering the gas communication cavity 3 through the communication hole 4, because the heating cylinder 2 It is fixedly arranged. Therefore, solid or liquid materials usually stay at the bottom of the heating cylinder 2 and cannot easily enter the communicating hole 4, while the heating gas in the heating cylinder 2 can diffuse and flow through the communicating hole 4 into the gas communicating cavity 3, thereby This further ensures that the heating gas circulates better in the gas communication cavity 3 for heat transfer.

Of course, this embodiment does not limit the shape, size and number of the communicating holes 4. The communicating holes 4 can be of any shape, such as circular, rectangular, elliptical, quincunx, etc., as long as it facilitates the passage of gas. The size of is determined according to the heating demand. If the heating demand is large, a larger communicating hole 4 can be provided to ensure sufficient circulation of heating gas. On the contrary, a smaller communicating hole 4 can be provided. The number of communicating holes 4 is also set according to the heating demand. The larger the number of communicating holes 4, the smoother the circulation of the heating gas in the gas communication cavity 3 and the faster the heating speed. Otherwise, the slower the heating speed, but at the same time Ensure that the solid and liquid materials in the heating cylinder 2 are prevented from entering the gas communication cavity 3 as much as possible.

Further, in this embodiment, one side of the cavity wall of the gas communication cavity 3 is fixed or shared with the inner wall of the cracking cylinder 1, that is, the gas communicating cavity 3 is seated and fixed on the inner wall of the cracking cylinder 1. The side wall of the gas communication cavity 3 used for seating may be an independent cavity wall, or it may be shared with the inner wall of the cracking cylinder 1. The communication hole 4 is opened on the cylinder wall where the gas communication cavity 3 and the cracking cylinder 1 are attached or shared, and the gas communication cavity 3 and the heating cylinder 2 maintain gas communication through the communication hole 4. By placing the gas communication cavity 3 on the wall of the pyrolysis cylinder 1, the material in the pyrolysis cylinder 1 can slide down along the cylinder wall in the pyrolysis cylinder 1, increasing the cavity wall connected to the gas cavity 3 The opportunity to contact heat transfer slows down the speed of material movement, thereby further improving heat transfer efficiency.

Of course, the gas communication cavity 3 can also be suspended in the cracking cylinder 1. The cavity wall of the gas communication cavity 3 does not contact the inner cylinder wall of the cracking cylinder 1, but is suspended and fixed through a supporting structure. Correspondingly, the gas communication cavity 3 communicates with the communication hole 4 on the cylinder wall of the cracking cylinder 1 through a communication pipe to realize gas communication. With this arrangement, when the material moves in the cracking cylinder 1, it may seldom come into contact with the cavity wall of the gas communication cavity 3, but the heat radiation heating through the cavity wall of the gas communication cavity 3 can also improve the heat transfer efficiency. .

As shown in Figure 1, Figure 2 and Figure 4, further, in this embodiment, the gas communication cavity 3 is preferably one or more sets of spiral structure cavities, which spiral along the axial direction of the cracking cylinder 1. Extend, the side wall of the spiral structure cavity and the cylinder wall of the cracking cylinder 1 form a spiral material channel 5. Multiple groups of spiral structure cavities are arranged along the axial direction of the cracking cylinder 1 to form a continuous spiral material channel 5. A spiral gas channel is formed inside the cavity. After being arranged in this way, the spiral structure cavity can make full use of the space in the cracking cylinder 1 to provide radial and axial heat convection, heat conduction, and heat radiation channels between the cracking cylinder 1 and the heating cylinder 2, and greatly increase the heat transfer area. During operation, after the material enters the cracking cylinder 1 from the feed end of the cracking cylinder 1, as the cracking cylinder 1 rotates, the material gradually moves from the feed end to the discharge end of the cracking cylinder 1 in the spiral material channel 5. The rotating spiral structure cavity drives automatically to move backwards. Therefore, the pyrolysis cylinder 1 can be placed horizontally, and it is not necessary to set the feed end higher than the discharge end obliquely. When the material moves in the spiral material channel 5, the material is always in contact with the side wall of the spiral structure cavity and the wall of the cracking cylinder 1 to transfer heat, and the running path of the material is extended, and the retention of the material in the cracking cylinder 1 is improved. Time enables the materials to be fully heated, which further improves the heat transfer efficiency and is more conducive to the cracking reaction.

Of course, if the gas communication cavity 3 does not use a spiral structure cavity, in order to facilitate the movement of the material from the feed end to the discharge end, the feed end of the pyrolysis cylinder 1 is inclined to be higher than the discharge end, and the weight of the material and the pyrolysis cylinder 1 are used. The rotation realizes the automatic movement of materials.

As shown in Figure 3, further, in this embodiment, one or more communicating holes 4 are opened on the wall of the spiral structure cavity which is attached to or shared with the cracking cylinder 1, and the multiple communicating holes 4 extend along the spiral direction. Layout. If a communicating hole 4 is provided, the heating gas with a certain pressure in the heating cylinder 2 enters the spiral structure cavity through the communicating hole 4. In order to fill the spiral structure cavity with the heating gas, a communicating hole 4 is provided in the spiral structure At one end of the cavity, the heating gas gradually fills the whole cavity from one end of the spiral structure cavity. The communicating hole 4 is preferably arranged at the end of the spiral structure cavity close to the discharge end, so that the flow direction of the heating gas is opposite to the direction of material movement to further Improve heat transfer efficiency. If multiple communicating holes 4 are provided, the multiple communicating holes 4 are arranged along the spiral direction of the spiral structure cavity. Preferably, the multiple communicating holes 4 are uniformly distributed to further improve the uniformity of gas heat transfer.

Further, in this embodiment, the spiral structure cavity is an annular spiral structure cavity, and there is a radial distance between the inner ring of the annular spiral structure cavity and the axis of the cracking cylinder 1. With this arrangement, the central part of the annular spiral structure cavity forms a hollow area penetrating the axial direction of the cracking cylinder 1, and the gas generated by cracking in the cracking cylinder 1 can circulate through the hollow area more smoothly.

Of course, the spiral structure cavity may not have a hollow area, and the gas generated by the cracking in the cracking cylinder 1 can also be spirally transported in the spiral material channel 5, but the gas transport path is longer.

As an optimization, in this embodiment, the difference between the outer ring diameter and the inner ring diameter of the annular spiral structure cavity is greater than 5 cm, and the outer ring diameter of the annular spiral structure cavity is determined according to heating requirements and gas delivery requirements in the cracking cylinder 1. The difference from the diameter of the inner ring. The determination of the difference value needs to ensure the temperature difference between the heating cylinder 2 and the cracking cylinder 1, so that the material can be fully cracked while avoiding rapid coking.

As an optimization, in this embodiment, the width between the two side walls of the spiral structure cavity is 1 cm to 100 cm, and the width determines the size of the gas spiral channel inside the spiral structure cavity, which in turn determines the heating capacity The size and heat dissipation area, as well as to ensure the generation of convection and turbulence of the hot air flow. More preferably, the width between the two side walls is about 50 cm.

In this embodiment, the pitch of the spiral structure cavity is equal pitch or variable pitch, and the pitch is greater than 1 cm. The pitch form and pitch size are determined according to the temperature gradient and carbonization requirements of different axial sections in the cracking cylinder 1.

As shown in Fig. 5, the heating cylinder 2 is optimized. In this embodiment, the heating cylinder 2 is a combustion cylinder, which is used to burn energy to generate hot gas. Specifically, an observation port 22, an ignition port 23, a gas inlet and outlet 21, and a waste outlet 24 are provided on the barrel of the combustion cylinder. The combustion cylinder is used to burn energy materials, such as liquid energy materials, solid energy materials, etc. The heated gas generated enters the gas communication cavity 3 through the communication hole 4 on the wall of the cracking cylinder 1, and the remaining waste after combustion passes The waste outlet 24 exits the combustion cylinder. The gas inlet and outlet 21 are used to discharge the gas in the combustion cylinder and to enter the outside gas. The ignition port 23 is used to ignite the energy substance in the combustion cylinder. The observation port 22 is used to observe the combustion situation in the combustion cylinder.

Of course, in addition to using a combustion cylinder for the heating cylinder 2, an electric heating device can also be provided in the heating cylinder 2 to heat the gas in the heating cylinder 2, and the heated gas enters the gas communication cavity 3. Alternatively, the heating cylinder 2 is connected with an external hot gas source for passing hot gas into the heating cylinder 2. As long as it can be realized that the gas in the heating cylinder 2 is heating gas and can be passed into the gas communication cavity 3 for heat transfer, it is not limited to the form of the heating cylinder 2 listed in the embodiment of the present application.

In this embodiment, the rotary pyrolysis equipment further includes a temperature sensor and/or pressure sensor arranged in the heating cylinder 2 and/or the pyrolysis cylinder 1. The temperature sensor detects the temperature in the heating cylinder 2 and/or the pyrolysis cylinder 1. The pressure sensor detects the pressure in the heating cylinder 2 and/or the cracking cylinder 1, and then controls the cracking reaction manually or automatically according to the detected temperature and pressure.

In this embodiment, the cracking cylinder 1 is driven to rotate by a driving device. The driving device mainly includes a motor, a reducer, a gear ring, a supporting roller, and a rotating ring. The rotating ring is preferably arranged on the outer circumferences of both ends of the cracking cylinder 1. The rotating ring Rotating and supporting by the supporting roller below, the motor is decelerated by the reducer and matched with the ring gear. The ring gear is fixed on the outer circumference of one end of the cracking cylinder 1, and the motor drives the ring gear to rotate, thereby driving the cracking cylinder 1 to rotate. Of course, the driving device may also have other structural forms, and is not limited to the forms listed in this embodiment.

In this embodiment, the two ends of the heating cylinder 2 and the outer cylinder wall of the cracking cylinder 1 are connected by a contact friction type rotary sealing connection. Since the cracking cylinder 1 rotates slowly, the rotating and sealing connection of the heating cylinder 2 and the cracking cylinder 1 can be realized through a simple rotating structure. In order to improve the structural strength of the rotating seal part, the wall thickness of the cracking cylinder 1 is increased at the position where the cracking cylinder 1 contacts and rubs with the heating cylinder 2. Of course, the heating cylinder 2 and the pyrolysis cylinder 1 can also be connected in a rotary sealing manner through other rotary sealing structures.

As shown in Fig. 4, in order to facilitate the discharging of the material in the pyrolysis cylinder 1, in this embodiment, a material turning-out mechanism 6 is provided in the pyrolysis cylinder 1 near the discharge end. The turning-out lead-out mechanism 6 continuously turns up the materials at the discharge end and guides them to the discharge port along with the rotation of the cracking cylinder 1 to avoid accumulation of materials at the discharge end.

As an optimization, in this embodiment, the turning-out mechanism 6 includes a plurality of V-shaped turning plates 61 or arc-shaped turning plates that are arranged in the circumferential direction and fixed on the inner wall of the cracking cylinder 1. The direction of the concave angle of the material plate 61 and the direction of the inner concave surface of the arc-shaped turning plate are the same as the rotation direction of the cracking cylinder 1. One end of the V-shaped turning plate 61 and the arc-shaped turning plate are both in the discharge end of the cracking cylinder 1. The end face is fixed, and the other end is a free end. Among them, the V-shaped turning plate 61 is composed of two plates combined to form a V-shaped structure.

Take the V-shaped turning plate 61 as an example for illustration. Its working principle is: as the cracking cylinder 1 rotates, the material continuously enters the inlet end of the V-shaped turning plate 61. Due to the concave angle of the V-shaped turning plate 61 and the cracking The direction of rotation of the cylinder 1 is the same. Therefore, when the V-shaped turning plate 61 moves from low to high, the material on the wall of the cracking cylinder 1 is lifted, so that the material moves toward the discharge end and accumulates at the concave corner. As the V-shaped turning plate 61 moves from high to low, the materials accumulated in the concave corners begin to be thrown, and the materials move along a plate of the V-shaped turning plate 61 near the discharge end to the output of the discharge end. The material opening realizes the material turning and exporting.

In the same way, when the arc-shaped turning plate moves from low to high, the material on the wall of the cracking cylinder 1 is moved to the inner concave surface, and the arc-shaped turning plate moves from high to low. During the process, the material on the inner concave surface is thrown and led out to the discharge port along the surface of the arc-shaped turning plate.

Further, in this embodiment, the baffle plate 62 at the recessed corner of the V-shaped turning plate 61 is also provided with a baffle 62 for carrying materials. The baffle 62 can better accumulate materials and lift the materials to a high place for throwing. In the same way, the inner recess of the arc-shaped turning plate is also provided with a baffle 62 for carrying materials.

The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this text, but should conform to the widest scope consistent with the principles and novel features disclosed in this text.

Claims

A rotary cracking device, comprising a cracking cylinder (1) and a heating cylinder (2), the heating cylinder (2) is sealed and sleeved on the outer periphery of the cracking cylinder (1), and the cracking cylinder (1) is relatively fixedly arranged The heating cylinder (2) rotates; it is characterized in that it also includes a gas communication cavity (3) arranged in the cracking cylinder (1) and isolated from the inside of the cracking cylinder (1), the The gas communication cavity (3) communicates with the heating cylinder (2), and is used for introducing the heating gas of the heating cylinder (2) into the gas communication cavity (3), and the gas communication cavity (3) ) The cavity wall is used for heat transfer with the material in the cracking cylinder (1).
The rotary cracking equipment according to claim 1, characterized in that the gas communication cavity (3) is a continuous cavity structure or a plurality of divided cavity structures.
The rotary cracking equipment according to claim 1, characterized in that the gas communication cavity (3) and the heating cylinder (2) pass through a communicating hole (4) opened in the cylinder wall of the cracking cylinder (1). ) Gas communication.
The rotary cracking equipment according to claim 3, characterized in that, one side cavity wall of the gas communication cavity (3) is fixed or shared with the inner wall of the cracking cylinder (1), and the gas communication The cavity (3) and the cracking cylinder (1) are attached or shared on the cylinder wall with the communication hole (4).
The rotary cracking equipment according to claim 1, characterized in that, the gas communication cavity (3) is one or more groups of spiral structure cavities, and the spiral structure cavities are along the pyrolysis cylinder (1). Axial spiral extension, the side wall of the spiral structure cavity and the cylinder wall of the cracking cylinder (1) form a spiral material channel (5).
The rotary pyrolysis equipment according to claim 5, characterized in that one or more communicating holes (4) are opened on the wall of the spiral structure cavity which is attached or shared with the pyrolysis cylinder (1), A plurality of the communication holes (4) are arranged in a spiral direction.
The rotary cracking equipment according to claim 5, wherein the spiral structure cavity is an annular spiral structure cavity, and the inner ring of the annular spiral structure cavity is between the axis of the cracking cylinder (1) There is a radial spacing.
The rotary cracking equipment according to any one of claims 1-7, characterized in that the heating cylinder (2) is a combustion cylinder, which is used to burn energy to generate hot gas;

Or the heating cylinder (2) is provided with an electric heating device for heating the gas in the heating cylinder (2);

Or the heating cylinder (2) is in communication with an external hot gas source for passing hot gas into the heating cylinder (2).
The rotary cracking equipment according to claim 8, characterized in that an observation port (22), an ignition port (23), a gas inlet and outlet (21) and a waste outlet (24) are provided on the cylinder of the combustion cylinder.
The rotary pyrolysis device according to any one of claims 1-7, further comprising a temperature sensor and/or pressure sensor arranged in the heating cylinder (2) and/or the pyrolysis cylinder (1) .
The rotary cracking equipment according to any one of claims 1-7, wherein the cracking cylinder (1) is driven to rotate by a driving device.
The rotary cracking equipment according to any one of claims 1-7, characterized in that the contact friction type rotary seal is adopted between the two ends of the heating cylinder (2) and the outer cylinder wall of the cracking cylinder (1) connection.
The rotary pyrolysis equipment according to any one of claims 1-7, characterized in that, a material turning-out mechanism (6) is provided in the pyrolysis cylinder (1) at a position close to the discharge end.
The rotary pyrolysis equipment according to claim 13, characterized in that, the turning-out mechanism (6) includes a plurality of V-shaped pyrolysis cylinders (1) arranged along the circumferential direction and fixed on the inner wall of the pyrolysis cylinder (1). Turning plate (61) or arc-shaped turning plate, the direction of the concave angle of the V-shaped turning plate (61) and the direction of the inner concave surface of the arc-shaped turning plate are both aligned with the direction of rotation of the cracking cylinder (1) Similarly, one end of the V-shaped turning plate (61) and the arc-shaped turning plate is fixed to the inner end surface of the discharge end of the cracking cylinder (1), and the other end is a free end.
The rotary pyrolysis equipment according to claim 14, characterized in that the turning-out mechanism (6) further comprises a concave corner of the V-shaped turning plate (61) and an inner concave of the arc-shaped turning plate The baffle (62) at the position is used to carry material.