A slewing device

Abstract

The application discloses a rotary equipment, which comprises a roller and a carbon stripping device arranged in the roller. The carbon stripping device is in contact with carbon generated by surface cracking of solid organic matter during rotation of the roller, and the carbon is stripped off. During operation, the solid organic matter moves in the roller by tumbling, and cracking reaction of the solid organic matter is generated by heating. Carbon is first generated on the surface of the solid organic matter. Through rotation of the roller, the carbon stripping device is in contact with the carbon on the surface of the solid organic matter, so that the carbon on the surface of the solid organic matter is stripped off, and the part of the solid organic matter which has not been cracked is exposed, and the cracking continues. The carbon generated after the cracking continues to be stripped off by the carbon stripping device, so that the carbon is prevented from wrapping on the surface of the solid organic matter and hindering the cracking reaction, the cracking reaction is accelerated, and the organic matter cracking efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of mechanical equipment technology, and in particular to a rotary device. Background Technology

[0002] Rotary equipment typically includes a rotating drum. Material within the drum slides and tumbles along its inner wall as the drum rotates. Taking solid organic matter pyrolysis as an example, while the solid organic matter tumbles and moves within the drum, the drum heats the solid organic matter, causing it to pyrolyze and form products such as char, pyrolysis gas, or pyrolysis oil. In practical applications, it has been found that the heating and pyrolysis of solid organic matter is time-consuming and has low pyrolysis efficiency.

[0003] In summary, how to solve the problem of low pyrolysis efficiency of solid organic matter has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the object of the present invention is to provide a rotary device to improve the pyrolysis efficiency of solid organic matter.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A rotary device includes a drum and a carbon stripping device disposed in the drum. As the drum rotates, the carbon stripping device comes into contact with carbon generated by the cracking of solid organic matter and strips the carbon off.

[0007] Preferably, in the above-mentioned rotary device, the carbon stripping device is a swinging member suspended in the drum and / or a protrusion disposed on the inner wall of the drum, the swinging member and the protrusion being used to collide with the surface of solid organic matter.

[0008] Preferably, in the above-described rotary device, the oscillating element is any one or more combinations of a chain, a strip, or a rope.

[0009] Preferably, in the above-described rotary device, there are multiple oscillating elements, which are arranged along the circumference and axial direction of the roller.

[0010] Preferably, in the above-described rotary device, at least one point of the chain and the rope is suspended inside the drum.

[0011] Preferably, in the above-described rotary device, at least one of the swinging elements is suspended at one suspension point of the roller.

[0012] Preferably, the rotary device described above further includes one or more sets of spiral bodies disposed inside the drum. The spiral bodies extend spirally along the axial direction of the drum, and the sidewalls of the spiral bodies and the drum wall form a spiral material channel. The carbon stripping device is disposed on the wall of the spiral material channel.

[0013] Preferably, in the above-mentioned rotary device, when the carbon stripping device is a swinging component, it is suspended and fixed on two adjacent swinging components on two side walls of the spiral material channel. The suspension point of one swinging component is located in the spiral material channel near the inner wall of the drum, and the suspension point of the other swinging component is located in the spiral material channel away from the inner wall of the drum. The two adjacent swinging components are staggered in the circumferential direction, and the two adjacent swinging components overlap during the swinging process.

[0014] Preferably, in the above-described rotary device, the protrusion is arranged on the wall of the spiral material channel.

[0015] Preferably, the rotary device described above further includes a heating cylinder that is sealed around the outer periphery of the drum, and the drum rotates relative to the heating cylinder that is fixedly disposed therein; a gas communication cavity is provided inside the spiral body, and the gas communication cavity is connected to the heating cylinder for introducing the heating gas of the heating cylinder into the gas communication cavity; the outer wall of the spiral body is used for heat transfer with the material inside the drum.

[0016] Preferably, in the above-mentioned rotary device, the helical body is an annular helical body, and there is a radial distance between the inner ring of the annular helical body and the axis of the drum.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] In the rotary device provided by this invention, a carbon stripping device is installed in the drum. As the drum rotates, the carbon stripping device comes into contact with the carbon generated by the pyrolysis of the solid organic matter surface, and is used to peel off the carbon from the surface of the solid organic matter. During operation, as the drum rotates, the solid organic material tumbles and moves inside the drum. The solid organic matter undergoes a pyrolysis reaction when heated, and carbon is initially generated on the surface of the solid organic matter. Through the rotation of the drum, the carbon stripping device comes into contact with the carbon on the surface of the solid organic matter, thereby peeling off the carbon from the surface of the solid organic matter, exposing the unpyrolyted part inside the solid organic matter, which continues to pyrolyze. The carbon generated after pyrolysis is then further peeled off by the carbon stripping device, thereby preventing carbon from covering the surface of the solid organic matter, hindering the pyrolysis reaction, accelerating the pyrolysis reaction, and improving the pyrolysis efficiency of organic matter. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a cross-sectional schematic diagram of a rotary device provided in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the cross-section of the second type of rotary device provided in an embodiment of the present invention;

[0022] Figure 3 This is a front view schematic diagram of a third type of rotary device provided in an embodiment of the present invention;

[0023] Figure 4 This is a cross-sectional schematic diagram of the fourth type of rotary device provided in an embodiment of the present invention;

[0024] Figure 5 This is a cross-sectional schematic diagram of the fifth type of rotary device provided in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the axial cross-section structure of the sixth type of rotary device provided in this embodiment of the invention;

[0026] Figure 7 This is a schematic diagram of the axial cross-sectional structure of the seventh type of rotary device provided in this embodiment of the invention;

[0027] Figure 8 This is a schematic diagram of the structure of a strip-shaped object in a rotary device according to an embodiment of the present invention;

[0028] Figure 9 This is a schematic diagram of a drum structure of a rotary device provided in an embodiment of the present invention;

[0029] Figure 10 This is a schematic diagram of the structure of the heating cylinder of a rotary device provided in an embodiment of the present invention.

[0030] Among them, 1 is a drum, 2 is a carbon stripping device, 21 is a swinging component, 211 is a chain, 212 is a strip, 22 is a protrusion, 3 is a spiral, 4 is a connecting hole, 5 is a spiral material channel, 6 is a heating cylinder, 61 is a gas inlet and outlet, 62 is an observation port, 63 is an ignition port, and 64 is a waste discharge port. Detailed Implementation

[0031] The core of this invention is to provide a rotary device that improves heat transfer efficiency.

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please refer to Figures 1-7 This invention provides a rotary device, including a drum 1 and a carbon stripping device 2. The carbon stripping device 2 is disposed in the drum 1. As the drum 1 rotates, the carbon stripping device 2 comes into contact with the carbon generated by the cracking of solid organic matter on the surface of the drum 1, and strips the carbon off.

[0034] The applicant of this application discovered that the low pyrolysis efficiency of solid organic matter is due to the fact that the carbon generated from the pyrolysis on the surface of the solid organic matter remains coated on the surface, preventing the unpyrolyzed parts inside the solid organic matter from being properly heated, thus affecting the pyrolysis reaction rate. In this embodiment, the rotary device, during operation, causes the solid organic material to tumble and move within the rotating drum 1. The solid organic matter undergoes a pyrolysis reaction upon heating, initially generating carbon on the surface. Through the rotation of the drum 1, the carbon stripping device 2 contacts the carbon on the surface of the solid organic matter, thereby stripping it off and exposing the unpyrolyzed parts inside the solid organic matter for further pyrolysis. The carbon generated after pyrolysis is then further stripped off by the carbon stripping device 2, thus preventing carbon from remaining on the surface of the solid organic matter, allowing the interior of the solid organic matter to heat up rapidly, accelerating the pyrolysis reaction, and improving the pyrolysis efficiency of the organic matter.

[0035] Further, in this embodiment, the carbon stripping device 2 is a swinging member 21 suspended inside the drum 1 and / or a protrusion 22 disposed on the inner wall of the drum 1. The swinging member 21 and the protrusion 22 are used to collide with the surface of the solid organic matter. Figure 1 , Figures 3-8 As shown, the oscillating component 21 is suspended inside the drum 1. The oscillating component 21 oscillates inside the drum 1 as the drum 1 rotates. During the oscillation, the oscillating component 21 collides with the solid organic matter tumbling inside the drum 1, knocking off the carbon generated from the cracking of the solid organic matter. Figure 2 , Figure 3 and Figure 6As shown, protrusions 22 are disposed on the inner wall of the drum 1. During the rotation of the drum 1, as the solid organic material rolls down the inner wall of the drum 1, the protrusions 22 collide with the surface of the solid organic material, thereby knocking off the carbon generated from the cracking of the solid organic material. Compared with the natural tumbling process of the solid organic material in the drum 1, the oscillating element 21 and the protrusions 22 greatly increase the probability of carbon collision and removal from the surface of the solid organic material, thereby improving the cracking efficiency of the solid organic material.

[0036] Specifically, this embodiment provides a specific swinging component 21, which is any one or more combinations of chain-like objects 211, strip-like objects 212, rope-like objects, etc. That is, the roller 1 may contain only one of chain-like objects 211, strip-like objects 212, and rope-like objects, or the roller 1 may contain any two of chain-like objects 211, strip-like objects 212, and rope-like objects, or all of chain-like objects 211, strip-like objects 212, and rope-like objects may be disposed within the roller 1. Figure 1 , Figures 3-7 As shown, the chain-like structure 211 is a chain structure, such as... Figure 8 As shown, the strip 212 is a long strip structure; the rope is a metal cable structure. As long as it can be suspended and swung inside the drum 1, it is acceptable. The swinging component 21 is not limited to the structural forms listed in this embodiment.

[0037] Furthermore, in this embodiment, there are multiple oscillating members 21, arranged along the circumference and axial direction of the drum 1, preferably evenly distributed, so that the solid organic matter inside the drum 1 can undergo carbon stripping throughout the entire process of moving from the feed end to the discharge end within the drum 1, further improving the pyrolysis efficiency. Moreover, adjacent oscillating members 21 can also rub and beat the solid organic matter during the oscillation process, further improving the carbon stripping effect.

[0038] In this embodiment, at least one point of the chain 211 and the rope is suspended inside the drum 1, that is, one or both ends of the chain 211 and the rope, or any point or points thereon, are suspended inside the drum 1. If the chain 211 and the rope are suspended inside the drum 1 at multiple points, the length of the chain 211 and the rope is increased in order to ensure the carbon stripping effect.

[0039] In this embodiment, at least one swinging member 21 is suspended at one suspension point of the roller 1, that is, one or more swinging members 21 are suspended at one point inside the roller 1. If multiple swinging members 21 are suspended at one point, a group of swinging members 21 is formed. The swing range of the group of swinging members 21 at the suspension point is increased, which improves the carbon stripping effect at that position. The setting position of the group of swinging members 21 is selected according to the process requirements, or the suspension density and spacing of the swinging members 21 are determined according to the process requirements.

[0040] In this embodiment, the protrusions 22 cover the inner wall of the roller 1 and protrude into the roller 1. The shape of the protrusions 22 can be cylindrical, conical, triangular pyramidal, mushroom-shaped, etc., as long as they can peel off the carbon on the surface of solid organic matter, and are not limited to the shapes listed in this embodiment.

[0041] like Figures 4-7 As shown, in this embodiment, the rotary device further includes one or more sets of spiral bodies 3 disposed inside the drum 1. The spiral bodies 3 extend spirally along the axial direction of the drum 1, and the sidewalls of the spiral bodies 3 and the drum wall of the drum 1 form a spiral material channel 5. The carbon stripping device 2 is disposed on the wall of the spiral material channel 5. With this arrangement, the spiral bodies 3 can make full use of the space inside the drum 1, greatly increasing the heat transfer area inside the drum 1, and defining the movement path of the solid organic matter. During operation, after the material enters the drum 1 from the feed end, as the drum 1 rotates, the material gradually moves from the feed end to the discharge end in the spiral material channel 5. The material is driven to move backward automatically by the rotating spiral bodies 3. Therefore, the drum 1 can be placed horizontally, without the need for the feed end to be tilted higher than the discharge end. During the movement of the material in the spiral material channel 5, the material is always in contact with the side wall of the spiral body 3 and the cylinder wall of the drum 1 for heat transfer. This extends the material's running path and increases the material's residence time in the drum 1, allowing the material to be fully heated and further improving the heat transfer efficiency. This is more conducive to the pyrolysis reaction. At the same time, since the material moves within the spiral material channel 5, the carbon stripping device 2 installed on the wall of the spiral material channel 5 can make the carbon stripping device 2 collide with the solid organic matter more concentratedly, thereby further improving the carbon stripping effect.

[0042] like Figure 6 and Figure 7 As shown, further, in this embodiment, when the oscillating member 21 is suspended in the spiral material channel 5, preferably, it is suspended from two adjacent oscillating members 21 fixed on the two side walls of the spiral material channel 5 respectively. The suspension point of one oscillating member 21 is located in the spiral material channel 5 near the inner wall of the drum 1, and the suspension point of the other oscillating member 21 is located in the spiral material channel 5 away from the inner wall of the drum 1. The two adjacent oscillating members 21 are staggered in the circumferential direction, and the two adjacent oscillating members 21 overlap during the oscillation process. In actual operation, when the drum 1 rotates to a certain position, the two adjacent oscillating members 21 on the two side walls of the spiral material channel 5 will oscillate in opposite directions, thereby achieving the overlap of the two oscillating members 21. The overlapping oscillating members 21 rub the solid organic matter sandwiched in it, similar to the rubbing action of two hands, which is more conducive to the peeling of carbon from the surface of the solid organic matter.

[0043] Of course, the oscillating component 21 can also be set at any position in the spiral material channel 5, but the kneading effect will not be as good as the case listed in this embodiment.

[0044] Similarly, the protrusions 22 can also be arranged at any position on the wall of the spiral material channel 5, such as the bottom or side wall of the spiral material channel 5, which can also concentrate on carbon stripping of solid organic matter.

[0045] Furthermore, in this embodiment, the rotary device also includes a heating cylinder 6 sealed around the outer periphery of the drum 1, and the drum 1 rotates relative to the fixedly disposed heating cylinder 6; a gas communication cavity is provided inside the spiral body 3, which is connected to the heating cylinder 6 and is used to introduce the heating gas of the heating cylinder 6 into the gas communication cavity; the outer wall of the spiral body 3 is used for heat transfer with the material inside the drum 1.

[0046] During operation, the material enters the drum 1. As the drum 1 rotates, it rotates slowly to ensure the pyrolysis effect. The material slides down the drum wall inside the drum 1. During this process, the heat in the heating cylinder 6 is transferred to the inside of the drum 1 through the drum wall. The material contacts the drum wall and transfers heat as it slides down the drum 1. At the same time, the heating gas from the heating cylinder 6 is introduced into the gas communication cavity and transfers heat to the material through the wall of the spiral body 3. Heat is also radiated into the drum 1 through the wall of the spiral body 3. Compared with the existing method of heating the material through only the drum wall, this application greatly increases the heat transfer area inside the drum 1 by setting the spiral body 3 with a gas communication cavity, which improves the heat transfer efficiency and thermal energy utilization rate, and is more conducive to the rapid progress of the pyrolysis reaction, saving reaction time.

[0047] In this embodiment, the gas communication cavity of the spiral body 3 and the heating cylinder 6 are kept in gas communication through a communication hole 4 formed in the cylinder wall of the drum 1. The communication hole 4 allows the heating gas in the heating cylinder 6 to enter the gas communication cavity, while minimizing or avoiding the entry of solid or liquid materials in the heating cylinder into the gas communication cavity through the communication hole 4. Since the heating cylinder is fixedly installed, solid or liquid materials usually remain at the bottom of the heating cylinder and are not easily able to enter the communication hole 4. However, the heating gas in the heating cylinder 6 can diffuse and convect through the communication hole 4 into the gas communication cavity, thereby further ensuring better flow of the heating gas in the gas communication cavity for heat transfer.

[0048] Of course, this embodiment does not limit the shape, size, or number of the connecting holes 4. The connecting holes 4 can be any shape, such as circular, rectangular, elliptical, or quincunx-shaped, as long as it facilitates gas passage. The size of the connecting holes 4 depends on the heating requirements. If the heating requirements are high, a larger connecting hole 4 can be set to ensure sufficient flow of heating gas; conversely, a smaller connecting hole 4 can be set. The number of connecting holes 4 is also set according to the heating requirements. The more connecting holes 4 there are, the smoother the flow of heating gas in the gas communication cavity and the faster the heating speed; conversely, the heating speed is slower. However, it is important to ensure that solid and liquid materials in the heating cylinder are prevented from entering the gas communication cavity as much as possible.

[0049] like Figure 9 As shown, further, in this embodiment, the multiple connecting holes 4 on the roller 1 are arranged along the spiral direction. If one connecting hole 4 is provided, the heating gas with a certain pressure inside the heating cylinder 6 enters the gas connecting cavity through the connecting hole 4. In order to fill the gas connecting cavity with heating gas, one connecting hole 4 is provided at one end of the spiral body, and the heating gas gradually fills the entire cavity from one end of the gas connecting cavity. The connecting hole 4 is preferably provided at the end of the gas connecting cavity near the discharge end, so that the flow direction of the heating gas is opposite to the direction of material movement, thereby further improving the heat transfer efficiency. If multiple connecting holes 4 are provided, the multiple connecting holes 4 are arranged along the spiral direction of the spiral body. Preferably, the multiple connecting holes 4 are evenly distributed to further improve the uniformity of gas heat transfer.

[0050] Furthermore, in this embodiment, the spiral 3 is an annular spiral, and there is a radial distance between the inner ring of the annular spiral and the axis of the drum 1. With this configuration, the central part of the annular spiral forms a hollow region that runs through the axis of the drum 1, allowing the gas generated by pyrolysis inside the drum 1 to flow more smoothly through the hollow region.

[0051] Of course, the spiral body 3 may not have a hollow area, in which case the gas generated by the cracking inside the drum 1 can also be spirally conveyed in the spiral material channel 5, but the gas conveying path is longer.

[0052] As an optimization, in this embodiment, the difference between the outer and inner diameters of the annular spiral is greater than 5 cm. This difference is determined based on heating requirements and gas delivery needs within the drum 1. Determining this difference ensures a proper temperature difference between the heating cylinder 6 and the drum 1, allowing for sufficient material pyrolysis while preventing rapid coking.

[0053] As an optimization, in this embodiment, the width between the two sidewalls of the spiral 3 is 1cm to 100cm. The width determines the size of the gas communication cavity inside the spiral 3, which in turn determines the amount of heating and the size of the heat dissipation area, as well as ensuring the generation of convection and turbulence of the hot airflow. More preferably, the width between the two sidewalls is about 50cm.

[0054] In this embodiment, the pitch of the spiral body 3 is either constant or variable, and the pitch is greater than 1 cm. The pitch type and pitch size are determined based on the temperature gradient and carbonization requirements of different axial sections within the drum 1.

[0055] like Figure 10 As shown, the heating cylinder 6 is optimized. In this embodiment, the heating cylinder 6 is a combustion cylinder used to burn energy to generate hot gas. Specifically, the combustion cylinder body is provided with an observation port 62, an ignition port 63, a gas inlet / outlet 61, and a waste outlet 64. The combustion cylinder contains energy substances, such as liquid or solid energy substances. The generated heating gas enters the gas communication chamber through the communication hole 4 on the cylinder wall of the drum 1, while the remaining waste after combustion is discharged from the combustion cylinder through the waste outlet 64. The gas inlet / outlet 61 is used for the discharge of gas from the combustion cylinder and the entry of external gas. The ignition port 63 is used to ignite the energy substance inside the combustion cylinder. The observation port 62 is used to observe the combustion situation inside the combustion cylinder.

[0056] Of course, besides using a combustion chamber, the heating cylinder 6 can also be equipped with an electric heating device to heat the gas inside the heating cylinder 6, and the heated gas enters the gas communication cavity. Alternatively, the heating cylinder 6 can be connected to an external hot gas source to introduce hot gas into the heating cylinder 6. As long as the gas in the heating cylinder 6 is a heating gas and can be introduced into the gas communication cavity for heat transfer, it is not limited to the heating cylinder forms listed in the embodiments of this application.

[0057] In addition to heating the drum 1 through the heating cylinder 6, for drum 1 that does not use a gas communication cavity, a heating device, such as an electric heating device, can be directly installed on the outside of the drum 1.

[0058] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0059] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not 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. A rotary device for pyrolysis, comprising a drum (1), characterized in that, It also includes a carbon stripping device (2) disposed in the drum (1). As the drum (1) rotates, the carbon stripping device (2) comes into contact with the carbon generated by the cracking of solid organic matter and strips the carbon off. The carbon stripping device (2) consists of a swinging member (21) suspended inside the drum (1) and a protrusion (22) disposed on the inner wall of the drum (1). The swinging member (21) and the protrusion (22) are used to collide with the surface of solid organic matter. The swinging component (21) is any one or a combination of chain (211), strip (212), and rope; There are multiple swinging elements (21), which are arranged along the circumference and axial direction of the roller (1); It also includes one or more sets of spiral bodies (3) disposed in the drum (1), the spiral bodies (3) extending spirally along the axial direction of the drum (1), the side wall of the spiral body (3) and the cylinder wall of the drum (1) forming a spiral material channel (5), and the carbon stripping device (2) is disposed on the wall of the spiral material channel (5); When the carbon stripping device (2) is a swinging component (21), it is suspended and fixed on two adjacent swinging components (21) on two side walls of the spiral material channel (5). The suspension point of one swinging component (21) is located in the spiral material channel (5) near the inner wall of the drum (1), and the suspension point of the other swinging component (21) is located in the spiral material channel (5) away from the inner wall of the drum (1). The two adjacent swinging components (21) are staggered in the circumferential direction, and the two adjacent swinging components (21) overlap during the swinging process. It also includes a heating cylinder (6) that is sealed around the outer periphery of the drum (1), and the drum (1) rotates relative to the heating cylinder (6) which is fixedly arranged; a gas communication cavity is provided inside the spiral body (3), and the gas communication cavity is connected to the heating cylinder (6) for introducing the heating gas of the heating cylinder (6) into the gas communication cavity; the outer wall of the spiral body (3) is used for heat transfer with the material inside the drum (1).

2. The rotary device according to claim 1, characterized in that, At least one point of the chain (211) and the rope is suspended inside the drum (1).

3. The rotary device according to claim 1, characterized in that, At least one of the swinging elements (21) is suspended at one of the suspension points of the roller (1).

4. The rotary device according to claim 1, characterized in that, The protrusion (22) is arranged on the wall of the spiral material channel (5).

5. The rotary device according to claim 1, characterized in that, The spiral (3) is an annular spiral, and there is a radial distance between the inner ring of the annular spiral and the axis of the roller (1).

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