A multi-point combustion temperature-adjustable pyrolysis device

Abstract

The present application discloses a multi-point combustion temperature-regulating pyrolysis device, including: a pyrolysis cylinder; a heating chamber, the two ends of which are rotationally and sealingly connected to the outer periphery of the pyrolysis cylinder, and the pyrolysis cylinder rotates relative to the heating chamber which is fixedly arranged, and heating gas is used to be introduced into the heating chamber; a plurality of outer combustion chambers, arranged outside the heating chamber, each outer combustion chamber is communicated with the heating chamber through a separate ventilation duct, and at least two outer combustion chambers are respectively communicated with different axial sections of the heating chamber, and heating gas is separately generated by combustion in each outer combustion chamber, and a first valve is arranged on each ventilation duct; a plurality of exhaust pipes, connected and arranged outside the heating chamber body, at least two exhaust pipes are respectively communicated with different axial sections of the heating chamber, and a second valve is arranged on each exhaust pipe. By controlling the on-off of the exhaust pipes corresponding to different axial sections and the combustion of the outer combustion chambers, the heating temperature of the pyrolysis cylinder at different axial sections can be controlled.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical equipment, and particularly relates to a multi-point combustion temperature-adjusting cracking device. Background Art

[0002] Cracking devices are common production equipment in the chemical field, used to heat and crack organic substances to obtain the required substances. Existing cracking devices mainly include a cracking cylinder and a heating chamber. The heating chamber is sleeved on the outer periphery of the cracking cylinder. The cracking cylinder rotates relative to the relatively fixed heating chamber, and the organic material tumbles and moves inside the cracking cylinder. The heat generated by the heating chamber is transferred to the organic material inside the cracking cylinder through the cylinder wall of the cracking cylinder. However, the heating temperature of the cracking device is not easy to control, which is not conducive to the cracking of organic substances.

[0003] In summary, how to facilitate the control of the heating temperature of the cracking device has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a multi-point combustion temperature-adjusting cracking device to facilitate the control of the heating temperature.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A multi-point combustion temperature-adjusting cracking device, comprising:

[0007] A cracking cylinder;

[0008] A heating chamber, both ends of the heating chamber are rotationally and hermetically connected to the outer periphery of the cracking cylinder. The cracking cylinder rotates relative to the relatively fixed heating chamber, and heating gas is introduced into the heating chamber;

[0009] A plurality of outer combustion chambers, arranged outside the heating chamber. Each outer combustion chamber is communicated with the heating chamber through a separate ventilation duct, and at least two outer combustion chambers are respectively communicated with different axial sections of the heating chamber in the axial direction. Each outer combustion chamber is used for separately burning to generate heating gas, and a first valve is provided on each ventilation duct;

[0010] A plurality of exhaust ducts, connected and arranged outside the heating cavity. At least two exhaust ducts are respectively communicated with different axial sections of the heating chamber in the axial direction, and a second valve is provided on each exhaust duct.

[0011] Preferably, in the above multi-point combustion temperature-adjusting cracking device, the outer combustion chambers are arranged in sequence along the axial direction of the heating chamber, and the exhaust ducts are arranged in sequence along the axial direction of the heating chamber.

[0012] Preferably, in the above multi-point combustion temperature-adjustable cracking equipment, each of the external combustion chambers is arranged on the same side of the heating chamber, and each of the exhaust pipes is vertically arranged at the top of the heating chamber.

[0013] Preferably, in the above multi-point combustion temperature-adjustable cracking equipment, the number of the external combustion chambers is equal to that of the exhaust pipes, and a set of corresponding external combustion chambers and exhaust pipes are arranged within the same axial section of the heating chamber, and the opening and closing states of the first valve and the second valve corresponding to the same axial section of the heating chamber are the same.

[0014] Preferably, in the above multi-point combustion temperature-adjustable cracking equipment, an exhaust main pipe is further included, and the exhaust main pipe is communicated with each of the exhaust pipes.

[0015] Preferably, in the above multi-point combustion temperature-adjustable cracking equipment, an auxiliary exhaust passage is further included, and two ends of the auxiliary exhaust passage are respectively communicated with the exhaust main pipe and the heating chamber.

[0016] Preferably, in the above multi-point combustion temperature-adjustable cracking equipment, the auxiliary exhaust passage and the exhaust main pipe are flexibly connected through a pipeline compensating connector.

[0017] Preferably, in the above multi-point combustion temperature-adjustable cracking equipment, both the first valve and the second valve are electric valves.

[0018] Preferably, in the above multi-point combustion temperature-adjustable cracking equipment, a first manual valve arranged in the air passage and a second manual valve in each of the exhaust pipes are further included.

[0019] Preferably, in the above multi-point combustion temperature-adjustable cracking equipment, a plurality of gas nozzle mounting openings arranged in sequence along the axial direction of the heating chamber are further formed in the cavity wall of the heating chamber for mounting gas nozzles.

[0020] Preferably, in the above multi-point combustion temperature-adjustable cracking equipment, the heating chamber includes a first cavity and a first top cover, the first top cover is hermetically sealed on the top of the first cavity, and the cavity wall of the first cavity is sequentially a high-temperature resistant layer, a heat insulation layer and an outer reinforcement layer from the inside to the outside.

[0021] Preferably, in the above multi-point combustion temperature-adjustable cracking equipment, the external combustion chamber includes a second cavity and a second top cover, the second top cover is hermetically sealed on the top of the second cavity, and the cavity wall of the second cavity is sequentially a high-temperature resistant layer, a heat insulation layer and an outer reinforcement layer from the inside to the outside.

[0022] Preferably, in the above-mentioned multi-point combustion temperature-adjustable cracking device, each of the outer combustion chambers is provided with a fuel through-hole and an ignition port. The fuel through-hole is used for introducing fuel, and the ignition port is used for igniting the fuel.

[0023] Preferably, in the above-mentioned multi-point combustion temperature-adjustable cracking device, a temperature sensor and / or a pressure sensor are / is further provided in the heating chamber and / or the cracking cylinder.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] In the multi-point combustion temperature-adjustable cracking device provided by the present invention, it includes a cracking cylinder, a heating chamber, a plurality of outer combustion chambers and a plurality of exhaust pipes; wherein, both ends of the heating chamber are rotationally and sealingly connected to the outer circumference of the cracking cylinder, and the cracking cylinder rotates relative to the relatively fixed heating chamber. Heating gas is introduced into the heating chamber; a plurality of outer combustion chambers are arranged outside the heating chamber. Each outer combustion chamber is communicated with the heating chamber through a separate ventilation channel, and at least two outer combustion chambers are respectively communicated with different axial sections of the heating chamber. Each outer combustion chamber is used for separately burning to generate heating gas, and a first valve is arranged on each ventilation channel; a plurality of exhaust pipes are connected and arranged outside the heating cavity, and at least two exhaust pipes are respectively communicated with different axial sections of the heating chamber, and a second valve is arranged on each exhaust pipe.

[0026] Since the multi-point combustion temperature-adjustable cracking equipment is provided with a plurality of external combustion chambers and a plurality of exhaust pipes that are separately communicated with the heating chamber outside the heating chamber, and at least two external combustion chambers and at least two exhaust pipes are communicated with different axial segments of the heating chamber, each external combustion chamber can burn separately to generate heating gas, and the generated heating gas can be introduced into the corresponding different axial segments in the heating chamber, so that the heating gas can more specifically heat different axial segments of the cracking cylinder. At the same time, each exhaust pipe can independently control its own on-off through the second valve provided thereon. When a certain exhaust pipe is opened, the heating gas in the heating chamber is exported from the heating chamber due to the characteristics of its own fluidity. During the process of the heating gas flowing through the exhaust pipe, the heating gas at the bottom of the heating chamber also surrounds and passes upward from the outer wall of the cracking cylinder corresponding to the axial segment where the exhaust pipe is located. During this process, the heating gas exchanges heat with the wall of the cracking cylinder corresponding to the axial segment where the exhaust pipe is located, so that the heat is concentrated on this axial segment to a certain extent, and the temperature of this segment of the cracking cylinder is locally increased. By controlling the on-off of the exhaust pipes of different axial segments and the combustion of the external combustion chambers, the heating temperature of the cracking cylinders of different axial segments can be controlled. It is more conducive to the cracking reaction. Compared with directly burning in the entire heating chamber, multiple external combustion chambers can be started and ignited with less fuel and oxygen content requirements, which plays a role in quickly heating the target axial segment of the cracking cylinder. At the same time, it can make the fuel burn more fully and has a high combustion efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0028] Figure 1 It is a top view schematic diagram of a multi-point combustion temperature-adjustable cracking equipment provided by an embodiment of the present invention;

[0029] Figure 2 It is a schematic structural diagram of a cross-section of a multi-point combustion temperature-adjustable cracking equipment provided by an embodiment of the present invention;

[0030] Figure 3 It is a front view structural schematic diagram of a multi-point combustion temperature-adjustable cracking equipment provided by an embodiment of the present invention;

[0031] Figure 4 It is a front view structural schematic diagram of the heating chamber of a multi-point combustion temperature-adjustable cracking equipment provided by an embodiment of the present invention;

[0032] Figure 5Schematic structural diagram of an exhaust pipeline of a multi-point combustion temperature-adjustable cracking device provided by an embodiment of the present invention;

[0033] Figure 6 Schematic structural diagram of a gas nozzle of a multi-point combustion temperature-adjustable cracking device provided by an embodiment of the present invention.

[0034] Wherein, 1 is a cracking cylinder, 2 is a heating chamber, 21 is a first top cover, 211 is a gas inlet and outlet, 22 is a first cavity, 221 is an outer reinforcement layer, 222 is a heat insulation layer, 223 is a heat-resistant layer, 224 is a waste outlet, 225 is a gas nozzle installation port, 3 is an outer combustion chamber, 31 is a second top cover, 32 is a second cavity, 4 is a ventilation duct, 5 is a first valve, 6 is a first manual valve, 7 is an auxiliary exhaust passage, 8 is a pipeline compensation connector, 9 is an exhaust main pipe, 10 is an exhaust pipeline, 20 is a second valve, 30 is a second manual valve, and 40 is a gas nozzle. Specific embodiments

[0035] The core of the present invention is to provide a multi-point combustion temperature-adjustable cracking device, which facilitates the control of the heating temperature.

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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 efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figures 1 - 5 , an embodiment of the present invention provides a multi-point combustion temperature-adjustable cracking device, including a cracking cylinder 1, a heating chamber 2, a plurality of outer combustion chambers 3, and a plurality of exhaust pipelines 10; wherein, both ends of the heating chamber 2 are rotationally and hermetically connected to the outer periphery of the cracking cylinder 1, the cracking cylinder 1 rotates relative to the relatively fixed heating chamber 2, and heating gas is introduced into the heating chamber 2; a plurality of outer combustion chambers 3 are arranged outside the heating chamber 2, each outer combustion chamber 3 is communicated with the heating chamber 2 through a separate ventilation duct 4, and at least two outer combustion chambers 3 are respectively communicated with different axial segments of the heating chamber 2 in the axial direction, and heating gas is separately generated by combustion in each outer combustion chamber 3, and a first valve 5 is arranged on each ventilation duct 4; a plurality of exhaust pipelines 10 are communicatively arranged outside the heating chamber 2, at least two exhaust pipelines 10 are respectively communicated with different axial segments of the heating chamber 2 in the axial direction, and a second valve 20 is arranged on each exhaust pipeline 10.

[0038] When the multi-point combustion temperature-regulating cracking equipment works, materials enter the cracking cylinder 1 through the feeding end. The cracking cylinder 1 rotates, and the materials move from the feeding end to the discharging end in the cracking cylinder 1. At the same time, according to the heating requirements, the external combustion chambers 3 on different shaft sections connected to the heating chamber 2 are selected for combustion, and the combustion degree of each external combustion chamber 3 is controlled. The combustion generates heating gas. By controlling the first valve 5 on the air passage 4, the heating gas in each external combustion chamber 3 is controlled to be introduced into the corresponding shaft section in the heating chamber 2, so as to heat the corresponding shaft section of the cracking cylinder 1. At the same time, the second valve 20 on the exhaust pipe 10 connected to different shaft sections of the heating chamber 2 is selected to be opened. The heating gas in the heating chamber 2 is led out of the heating chamber 2 by the opened exhaust pipe 10. During the process of the heating gas flowing through the exhaust pipe 10, the heating gas at the bottom of the heating chamber 2 also passes around from the outer wall of the cracking cylinder 1 corresponding to the shaft section where the exhaust pipe 10 is located from bottom to top. The heating gas exchanges heat with the cylinder wall of the cracking cylinder 1 corresponding to the shaft section where the exhaust pipe 10 is located.

[0039] Since a plurality of external combustion chambers 3 and a plurality of exhaust pipes 10 that are separately connected to the heating chamber 2 are arranged outside the heating chamber 2, and at least two external combustion chambers 3 and at least two exhaust pipes 10 are both connected to different shaft sections of the heating chamber 2, each external combustion chamber 3 can burn separately to generate heating gas, and the generated heating gas can be introduced into the corresponding different shaft sections in the heating chamber 2, so that the heating gas can more specifically heat different shaft sections of the cracking cylinder 1. At the same time, each exhaust pipe 10 can be independently controlled to be opened or closed through the second valve 20 provided thereon. When a certain exhaust pipe 10 is opened, due to the characteristics of its own fluidity, the heating gas in the heating chamber 2 is led out of the heating chamber 2 by the opened exhaust pipe 10. During the process of the heating gas flowing through the exhaust pipe 10, the heating gas at the bottom of the heating chamber 2 also passes around from the outer wall of the cracking cylinder 1 corresponding to the shaft section where the exhaust pipe 10 is located from bottom to top. During this process, the heating gas exchanges heat with the cylinder wall of the cracking cylinder 1 corresponding to the shaft section where the exhaust pipe 10 is located, so as to concentrate the heat on this shaft section to a certain extent and locally increase the temperature of this section of the cracking cylinder 1. By controlling the opening and closing of the exhaust pipes 10 of different shaft sections and the combustion of the external combustion chambers 3, the heating temperature of different shaft sections of the cracking cylinder 1 can be controlled, which is more conducive to the cracking reaction. Compared with directly burning in the entire heating chamber 2, the plurality of external combustion chambers 3 can be started and ignited under the condition of less fuel and oxygen content requirements, which plays a role in quickly heating the target shaft section of the cracking cylinder 1. At the same time, it can make the fuel burn more fully and has a high combustion efficiency.

[0040] Further, in this embodiment, the outer combustion chambers 3 are arranged in sequence along the axial direction of the heating chamber 2, that is, each outer combustion chamber 3 is respectively connected to one axial section of the heating chamber 2. Different outer combustion chambers 3 correspond to different axial sections of the heating chamber 2, and each axial section of the heating chamber 2 corresponds to one connected outer combustion chamber 3. Thus, the heating temperature of each axial section of the heating chamber 2 can be controlled independently, and the control degree can be balanced. Of course, one axial section of the heating chamber 2 can also be connected to at least two outer combustion chambers 3, which can be set according to the heating requirements. The exhaust pipes 10 are arranged in sequence along the axial direction of the heating chamber 2, that is, each exhaust pipe 10 is respectively connected to one axial section of the heating chamber 2. Different exhaust pipes 10 correspond to different axial sections of the heating chamber 2, and each axial section of the heating chamber 2 corresponds to one connected exhaust pipe 10. Thus, the heating temperature of each axial section of the heating chamber 2 can be controlled independently, and the temperature control degree of the entire multi-point combustion temperature-adjustable cracking device can be balanced. Of course, one axial section of the heating chamber 2 can also be connected to at least two exhaust pipes 10, which can be set according to the heating requirements.

[0041] Furthermore, in this embodiment, the outer combustion chambers 3 are arranged on the same side of the heating chamber 2, and the outer combustion chambers 3 are arranged in parallel and side by side, which is convenient for installation and layout. Preferably, the distances between the outer combustion chambers 3 are equal, which can achieve balanced control of the axial heating temperature of the heating chamber 2. The exhaust pipes 10 are all vertically arranged on the top of the heating chamber 2, and the exhaust pipes 10 are arranged in parallel and side by side. On the one hand, taking advantage of the characteristic that the heating gas rises, the exhaust pipes 10 are arranged on the top of the heating chamber 2, which is beneficial to the discharge of the heating gas and can extend the discharge path of the heating gas at the bottom of the heating chamber 2 to fully exchange heat. On the other hand, the exhaust pipes 10 are arranged in parallel and side by side, which is convenient for installation and layout. Preferably, the distances between the exhaust pipes 10 are equal, which can achieve balanced control of the axial heating temperature of the heating chamber 2.

[0042] Of course, the outer combustion chambers 3 can also be arranged on different sides of the heating chamber 2, and the exhaust pipes 10 can also be arranged at other parts of the heating chamber 2. They can be arranged arbitrarily in space, as long as each outer combustion chamber 3 and each exhaust pipe 10 are connected to different axial sections of the heating chamber 2, and it is not limited to the layout forms listed in this embodiment.

[0043] Further, in this embodiment, the number of the outer combustion chambers 3 is equal to that of the exhaust pipes 10, and a set of corresponding outer combustion chambers 3 and exhaust pipes 10 are arranged on the same axial section of the heating chamber 2, that is, each outer combustion chamber 3 and each exhaust pipe 10 are connected in a one-to-one correspondence on the same axial section of the heating chamber 2, and the opening and closing states of the first valve 5 and the second valve 20 corresponding to the same axial section of the heating chamber 2 are the same.

[0044] During operation, select the exhaust duct 10 and the external combustion chamber 3 corresponding to the same axial section of the heating chamber 2, and keep the first valve 5 on the exhaust duct 10 and the second valve 20 on the air passage 4 of the external combustion chamber 3 open simultaneously. Then, the heating gas generated by the combustion of the external combustion chamber 3 is introduced into the corresponding axial section of the heating chamber 2. The heating gas rises from the bottom of this axial section, surrounds and passes along the outer wall of the corresponding cracking cylinder 1 within this axial section, and finally rises to the top and is discharged from the exhaust duct 10 corresponding to this axial section. In this way, the cracking cylinder 1 within this axial section of the heating chamber 2 can be heated more specifically, the heat is concentrated on heating the cracking cylinder 1 of this axial section, which can make the path of the heating gas more regular and can more accurately control the heating temperature of the target axial section. By selecting the on-off of the exhaust duct 10 and the combustion of the external combustion chamber 3 corresponding to the same axial section, it is more convenient to control the heating temperature of the target axial section of the multi-point combustion temperature-controlled cracking equipment. According to different target axial sections, select the exhaust duct 10 and the external combustion chamber 3 corresponding to the target axial section, and the heating control of one or multiple target axial sections can be carried out simultaneously.

[0045] Of course, it is also possible to select the exhaust duct 10 and the external combustion chamber 3 corresponding to different axial sections for operation, but the heating target is not as clear as that corresponding to the same axial section.

[0046] As Figure 3 and Figure 5 shown, further, in this embodiment, the multi-point combustion temperature-controlled cracking equipment further includes an exhaust main pipe 9. The exhaust main pipe 9 is connected to each exhaust duct 10, and the exhaust main pipe 9 is preferably parallel to the axis of the heating chamber 2. The heating gas discharged from each exhaust duct 10 is collected into the exhaust main pipe 9 and finally discharged through the exhaust main pipe 9. The exhaust main pipe 9 is beneficial to the centralized collection and treatment of heating waste gas. Of course, it can also be discharged only through each exhaust duct 10.

[0047] Furthermore, in this embodiment, the multi-point combustion temperature-controlled cracking equipment further includes an auxiliary exhaust passage 7. The two ends of the auxiliary exhaust passage 7 are respectively connected to the exhaust main pipe 9 and the heating chamber 2. No valve is provided in the auxiliary exhaust passage 7, and the auxiliary exhaust passage 7 is in a conducting state. Therefore, when it is not necessary to control the heating temperature of each axial section, the heating waste gas in the heating chamber 2 can be discharged to the exhaust main pipe 9 through the auxiliary exhaust passage 7 and finally discharged.

[0048] As an optimization, in this embodiment, the auxiliary exhaust passage 7 and the exhaust main pipe 9 are flexibly connected through a pipe compensating connector 8. Since the auxiliary exhaust passage 7 is fixed to the top of the heating chamber 2, and the exhaust main pipe 9 and the exhaust pipe 10 are also fixed to the top of the heating chamber 2, due to thermal expansion and contraction, there will be a relative position change between the auxiliary exhaust passage 7 and the exhaust main pipe 9. Therefore, the auxiliary exhaust passage 7 and the exhaust main pipe 9 are flexibly connected through the pipe compensating connector 8. The pipe compensating connector 8 can be a bellows structure or the like and can undergo flexible deformation.

[0049] Further, in this embodiment, the first valve 5 and the second valve 20 are electric valves, which can automatically control the opening and closing as well as the opening degree of the electric valves. The electric valves are specifically high-temperature resistant proportional valves. When the temperature of a certain shaft section of the heating chamber 2 is too high, the electric valve on the air passage 4 corresponding to that shaft section is closed or the opening is reduced. Conversely, the electric valve is opened or the opening is increased. When the temperature of a certain shaft section of the cracking cylinder 1 needs to be increased, the electric valve of the exhaust pipe 10 corresponding to that shaft section is opened or the opening is increased. Conversely, the electric valve is closed or the opening is reduced. Of course, the first valve 5 and the second valve 20 can also be manual valves, and the opening and closing as well as the opening degree of the manual valves are controlled manually.

[0050] Further, for the case where both the first valve 5 and the second valve 20 are electric valves, in this embodiment, the multi-point combustion temperature-regulating cracking device further includes a first manual valve 6 provided in the air passage 4 and a second manual valve 30 provided in the exhaust pipe 10. When the electric valve cannot be tightly closed or cannot be closed due to ash accumulation in the air passage 4, the air passage 4 is closed by closing the first manual valve 6. When the electric valve cannot be tightly closed or cannot be closed due to ash accumulation in the exhaust pipe 10, the exhaust pipe is closed by closing the second manual valve 30.

[0051] As Figure 4 shown, further, in this embodiment, the cavity wall of the heating chamber 2 is further provided with a plurality of gas nozzle mounting openings 225 arranged in sequence along the axial direction of the heating chamber 2 for mounting gas nozzles 40, and the gas nozzles 40 are used to introduce high-pressure gas, cold air or oxygen-containing gas into the heating chamber 2.

[0052] The working principle is as follows: After the multi-point combustion temperature-adjusting pyrolysis equipment has been used for a period of time, a certain amount of ash will accumulate on the outer wall of the pyrolysis cylinder 1 in the heating chamber 2, resulting in poor thermal conductivity of the pyrolysis cylinder 1 and being unfavorable for the heating of the pyrolysis cylinder 1. Therefore, a gas nozzle 40 is installed in the gas nozzle installation port 225 of the heating chamber 2. High-pressure gas is introduced into the heating chamber 2 through the gas nozzle 40. The high-pressure gas is blown into the heating chamber 2 to blow away the ash on the outer wall of the pyrolysis cylinder 1 and is discharged through the exhaust pipe 10 along with the air flow. Multiple gas nozzle installation ports 225 can install multiple gas nozzles 40, and the multiple gas nozzles 40 are arranged in sequence along the axial direction of the heating chamber 2. Therefore, the ash on the barrel walls of different axial segments of the pyrolysis cylinder 1 can be cleaned through different gas nozzles 40.

[0053] Of course, the gas nozzle 40 can also be used for cooling the heating chamber 2. When the temperature in the heating chamber 2 is too high, cold air can be introduced into the heating chamber 2 through the gas nozzle 40. The gas nozzle 40 corresponding to different axial segments can be selected to introduce cold air to cool different axial segments of the heating chamber 2.

[0054] In addition, the gas nozzle 40 can also be used to supplement oxygen. When combustion heating is carried out in the heating chamber 2, if the combustion is insufficient, oxygen-containing gas can be introduced into the heating chamber 2.

[0055] As Figure 5 shown, in this embodiment, the gas nozzle 40 is a flat flared structure, that is, the air inlet of the gas nozzle 40 is smaller than the air outlet of the gas nozzle 40, and the air outlet is rectangular. The gas nozzle 40 can output high-pressure gas. Of course, the gas nozzle 40 can also be in other structural forms, not limited to the form listed in this embodiment.

[0056] As Figure 2 shown, in this embodiment, the heating chamber 2 includes a first cavity 22 and a first top cover 21. The first top cover 21 is hermetically sealed on the top of the first cavity 22. The cavity wall of the first cavity 22 is, from the inside to the outside, a high-temperature resistant layer 223, a heat insulation layer 222, and an outer reinforcement layer 221 in sequence. Both ends of the pyrolysis cylinder 1 are rotationally and hermetically connected to the first cavity 22. The first cavity 22 can have a rectangular cross-section or a circular cross-section. The first top cover 21 is an arc-shaped top cover or a flat top plate, and preferably an arc-shaped top cover with high structural strength. The first top cover 21 is a high-temperature resistant top cover and can withstand high temperatures. A gas inlet and outlet 211 is opened on the first top cover 21 for the inlet and outlet of gas. A waste outlet 224 is opened at the bottom of the first cavity 22 for discharging the waste generated by combustion in the heating chamber 2.

[0057] In this embodiment, the external combustion chamber 3 includes a second cavity 32 and a second top cover 31. The second top cover 31 is hermetically sealed on the top of the second cavity 32. The cavity wall of the second cavity 32, from the inside out, is sequentially a high-temperature resistant layer, a heat insulation layer, and an external reinforcement layer. The second cavity 32 can have a rectangular cross-section or a circular cross-section. The second top cover 31 is an arc-shaped top cover or a flat top plate, and preferably an arc-shaped top cover, which has high structural strength. The second top cover 31 is a high-temperature resistant top cover and can withstand high temperatures.

[0058] In this embodiment, each external combustion chamber 3 is provided with a fuel through-hole and an ignition port. The fuel through-hole is used to introduce fuel, and the ignition port is used to ignite the fuel. Preferably, the fuel through-hole is used to introduce combustible gas, and the heating gas generated by combustion enters the heating chamber 2 through the ventilation channel. The amount of fuel introduced into each external combustion chamber 3 can be controlled separately, and the combustion degree of the external combustion chamber 3 can be controlled separately.

[0059] In this embodiment, the multi-point combustion temperature-adjusting cracking device further includes a temperature sensor and / or a pressure sensor disposed in the heating chamber 2 and / or the cracking cylinder 1. The temperature in the heating chamber 2 and / or the cracking cylinder 1 is detected by the temperature sensor, and the pressure in the heating chamber 2 and / or the cracking cylinder 1 is detected by the pressure sensor. Then, the cracking reaction is controlled manually or automatically according to the detected temperature and pressure.

[0060] 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 disposed on the outer peripheries at both ends of the cracking cylinder 1. The rotating ring is rotationally supported by the supporting roller below. The motor is decelerated by the reducer and then cooperates with the gear ring. The gear ring is fixed on the outer periphery of one end of the cracking cylinder 1. The cracking cylinder 1 is driven to rotate by driving the gear ring to rotate by the motor. Of course, the driving device can also be of other structural forms and is not limited to the form listed in this embodiment.

[0061] In this embodiment, a contact friction type rotational sealing connection is adopted between both ends of the heating chamber 2 and the outer cylinder wall of the cracking cylinder 1. Since the cracking cylinder 1 rotates slowly, a simple rotational structure can be used to achieve the rotational sealing connection between the heating chamber 2 and the cracking cylinder 1. To improve the structural strength of the rotational sealing part, the wall thickness of the cracking cylinder 1 is increased at the position where it contacts and rubs against the heating chamber 2. Of course, the heating chamber 2 and the cracking cylinder 1 can also be rotationally sealed by other rotational sealing structures.

[0062] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0063] The foregoing description of the disclosed embodiments enables those skilled in the art to practice or use the present 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 present 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. A multi-point combustion temperature-regulating pyrolysis device, characterized in that, Comprising: Pyrolysis cylinder (1); Heating chamber (2), both ends of the heating chamber (2) are rotationally and sealingly connected to the outer periphery of the pyrolysis cylinder (1), the pyrolysis cylinder (1) rotates relative to the heating chamber (2) which is fixedly arranged, and heating gas is introduced into the heating chamber (2); A plurality of outer combustion chambers (3), arranged outside the heating chamber (2), each outer combustion chamber (3) is communicated with the heating chamber (2) through a separate ventilation duct (4), and at least two outer combustion chambers (3) are respectively communicated with different axial sections of the heating chamber (2). Heating gas is separately generated by combustion in each outer combustion chamber (3), and a first valve (5) is arranged on each ventilation duct (4); A plurality of exhaust ducts (10), communicated and arranged outside the heating chamber (2), at least two exhaust ducts (10) are respectively communicated with different axial sections of the heating chamber (2), and a second valve (20) is arranged on each exhaust duct (10); Each of the outer combustion chambers (3) is arranged in sequence along the axial direction of the heating chamber (2), and each of the exhaust ducts (10) is arranged in sequence along the axial direction of the heating chamber (2).

2. The multi-point combustion temperature-adjustable cracking device according to claim 1, wherein Each of the outer combustion chambers (3) is arranged on the same side of the heating chamber (2), and each of the exhaust ducts (10) is vertically arranged on the top of the heating chamber (2).

3. The multi-point combustion temperature-adjustable pyrolysis equipment according to claim 2, wherein The number of the outer combustion chambers (3) is equal to that of the exhaust ducts (10), and a set of corresponding outer combustion chamber (3) and exhaust duct (10) are arranged on the same axial section of the heating chamber (2), and the opening and closing states of the first valve (5) and the second valve (20) corresponding to the same axial section of the heating chamber (2) are consistent.

4. The multi-point combustion temperature-regulating pyrolysis device according to claim 3, characterized in that, Further comprising an exhaust main pipe (9), the exhaust main pipe (9) is communicated with each of the exhaust ducts (10).

5. The multi-point combustion temperature-adjustable cracking device according to claim 4, characterized in that Further comprising an auxiliary exhaust passage (7), both ends of the auxiliary exhaust passage (7) are respectively communicated with the exhaust main pipe (9) and the heating chamber (2).

6. The multi-point combustion temperature-regulating pyrolysis device according to claim 5, wherein, The auxiliary exhaust passage (7) is flexibly connected to the exhaust main pipe (9) through a pipe compensating connector (8).

7. The multi-point combustion temperature-adjustable cracking device according to claim 1, wherein Both the first valve (5) and the second valve (20) are electric valves.

8. The multi-point combustion temperature-adjustable cracking device according to claim 7, wherein, Further comprising a first manual valve (6) arranged in each ventilation duct (4) and a second manual valve (30) arranged in each exhaust duct (10).

9. The multi-point combustion temperature-adjustable pyrolysis equipment according to any one of claims 1-7, characterized in that, A plurality of gas nozzle mounting openings (225) arranged in sequence along the axial direction of the heating chamber (2) are further formed on the cavity wall of the heating chamber (2) for mounting gas nozzles (40).

10. The multi-point combustion temperature-adjustable cracking device according to any one of claims 1-7, characterized in that, The heating chamber (2) comprises a first cavity (22) and a first top cover (21), the first top cover (21) is hermetically sealed on the top of the first cavity (22), and the cavity wall of the first cavity (22) is, from the inside to the outside, a high-temperature resistant layer (223), a heat insulation layer (222) and an outer reinforcement layer (221).

11. The multi-point combustion temperature-adjustable pyrolysis equipment according to any one of claims 1-7, characterized in that, The outer combustion chamber (3) includes a second cavity (32) and a second top cover (31). The second top cover (31) is hermetically sealed to the top of the second cavity (32). The cavity wall of the second cavity (32) is successively composed of a high-temperature resistant layer, a heat insulation layer, and an outer reinforcement layer from the inside out.

12. The multi-point combustion temperature-regulating pyrolysis equipment according to any one of claims 1-7, characterized in that, Each of the outer combustion chambers (3) is provided with a fuel through hole and an ignition port. The fuel through hole is used for introducing fuel, and the ignition port is used for igniting the fuel.

13. The multi-point combustion temperature-regulating pyrolysis equipment according to any one of claims 1-7, characterized in that, It further includes a temperature sensor and / or a pressure sensor disposed in the heating chamber (2) and / or the cracking cylinder (1).

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