Low-rank coal pyrolysis rotary kiln capable of cyclic utilization of pyrolysis gas

Abstract

Disclosed in the present invention is a low-rank coal pyrolysis rotary kiln capable of cyclic utilization of pyrolysis gas, which comprises a rotary kiln body and a pyrolysis gas circulating conveying apparatus. The pyrolysis gas circulating conveying apparatus comprises a separation device and a sweeping device. The separation device comprises a treatment portion, a separation plate, a connection portion, a three-way valve, control units, rotating shafts, blocking plates, longitudinal separation members, a fluid channel and an energy storage portion. The sweeping device comprises ratchet wheel plates, bar-shaped assembling members, racks, an inverted-U-shaped sliding plate, a loading box, a connection base and a sweeping tool. The separation device and the sweeping device are formed by means of assembly in a motion linkage mode, and the separation device and the sweeping device are assembled into the whole pyrolysis gas circulating conveying apparatus by means of a motion linkage mode, so as to achieve cyclic utilization of pyrolysis gas. The rotary kiln is easy to disassemble to be cleaned, thereby greatly improving the cyclic utilization ratio of pyrolysis gas.

Description

A low-rank coal pyrolysis rotary kiln with pyrolysis gas recycling Technical Field

[0001] The invention relates to the technical field of pyrolysis rotary kilns, and in particular to a low-rank coal pyrolysis rotary kiln with pyrolysis gas recycling. Background Art

[0002] Pyrolysis is also called dry distillation or carbonization. Pyrolysis utilizes the thermal instability of organic and inorganic substances in a substance and heats them under oxygen-free conditions to cause them to crack. They are cracked according to their carbon-hydrogen ratio to form pyrolysis gas and solid residue.

[0003] In the related art, during the pyrolysis process of low-rank coal, when the low-rank coal is fed into a rotary kiln for pyrolysis, generating pyrolysis gas and solid residue, a pyrolysis gas recovery device is used to recover the pyrolysis gas discharged from the rotary kiln and transport it back to the rotary kiln for recycling to improve energy utilization. However, such pyrolysis gas recovery devices are typically packaged in an integrated manner, making them difficult to clean and resulting in a low recycling rate for the pyrolysis gas.

[0004] Summary of the Invention

[0005] In order to solve the deficiencies in the prior art, the purpose of the present invention is to provide a low-rank coal pyrolysis rotary kiln for recycling pyrolysis gas, which adopts a kinematic connection to form a separation device and a sweeping device, and adopts a kinematic connection to splice the separation device and the sweeping device into a whole pyrolysis gas circulation and conveying equipment, thereby realizing the recycling of pyrolysis gas, facilitating decomposition and cleaning, and thus greatly improving the recycling rate of pyrolysis gas.

[0006] The technical solution adopted in the present invention is as follows:

[0007] A low-rank coal pyrolysis rotary kiln for recycling pyrolysis gas, the pyrolysis rotary kiln comprising: a rotary kiln body (1), the front end of the rotary kiln body being provided with a feeding end and an air outlet, the rear end of the rotary kiln body being provided with a discharge end and an air inlet; a pyrolysis gas circulation conveying device (2), the pyrolysis gas circulation conveying device (2) being connected to the air outlet and the air inlet, respectively, wherein the pyrolysis gas circulation conveying device (2) comprises: a separation device (10) and a cleaning device (20), the separation device (10) comprising a processing part (100), a separation sheet (110), a connecting part (120), a three-way valve (130), a control unit (140), a rotating shaft (1 50), a barrier sheet (160), a longitudinal separator (170), a fluid channel (180) and an energy storage portion (190), wherein the bottom of the cooking portion (100) is movably connected to the support seat, the upper portion of the cooking portion (100) is provided with the separation sheet (110), the top of the cooking portion (100) is provided with a first sealing cover, the first sealing cover is connected to the air outlet through an opened through-hole, the cooking portion (100) is adjacent to the connecting portion (120), the lower portion of the connecting portion (120) is movably connected to the support seat, and the first columnar through-holes are uniformly opened in sequence on one side of the cooking portion (100) close to the connecting portion (120). The first end of the three-way valve (130) is embedded in the first columnar through-groove, the second end and the third end of the three-way valve (130) are embedded in the connecting portion (120), and the second end and the third end of the three-way valve (130) are both equipped with the control unit (140), the lower surface of the connecting portion (120) is uniformly equipped with the rotating shaft (150), the blocking piece (160) is assembled on the top of the connecting portion (120), the upper part of the rotating shaft (150) is arranged between the blocking pieces (160), the middle part of the rotating shaft (150) is provided with the longitudinal separation piece (170), and the longitudinal separation piece (170) is uniformly arranged. The connecting portion (120) is distributed around the rotating shaft (150) and is located below the barrier sheet (160). The connecting portion (120) is also adjacent to the energy storage portion (190), and a second columnar through-groove is uniformly opened in sequence on a side of the connecting portion (120) close to the energy storage portion (190). One end of the fluid channel (180) is embedded in the second columnar through-groove, and the other end of the fluid channel (180) is embedded in the energy storage portion (190). The energy storage portion (190) is movably connected to the support seat. A second sealing cover is provided on the top of the energy storage portion (190), and the second sealing cover is connected to the air inlet through the opened through-groove.The cleaning device (20) comprises a ratchet disc (200), a strip assembly part (210), a ratchet strip (220), an inverted U-shaped sliding plate (230), a loading box (240), a connecting seat (250) and a cleaning tool (260), wherein the ratchet disc (200) is nested at the upper end of the rotating shaft (150), the strip assembly part (210) is movably connected above the barrier plate (160), and the strip assembly part (210) is respectively arranged on both sides of the ratchet disc (200), and the ratchet strip (220) is arranged on both sides of the ratchet disc (200). The tooth bars (220) are evenly arranged on the inner side of the mounting plate (210) and engage with the ratchet plate (200). The first bottom end of the inverted U-shaped sliding plate (230) is arranged on the upper surface of the mounting plate (210). The second bottom end of the inverted U-shaped sliding plate (230) is provided with the connecting seat (250). Cleaning tools (260) are evenly arranged on the connecting seat (250) in sequence. The loading box (240) is correspondingly arranged below the cleaning tools (260) and the separating sheet (110).

[0008] In one embodiment of the present invention, the barrier sheet (160) is movably connected to the upper portion of the connecting portion (120), a plurality of slots are provided on the inner wall of the cooking portion (100), the separation sheet (110) is embedded in each of the slots via a protruding structure, and the loading box (240) is movably connected to the lower portion of the separation sheet (110).

[0009] In one embodiment of the present invention, a plurality of rectangular strips (1000) are plugged and connected to the inner surface of the cooking portion (100), and the plurality of rectangular strips (1000) form a connecting frame within the cooking portion (100), and a plurality of screening plates (2000) are arranged on the connecting frame.

[0010] In one embodiment of the present invention, the longitudinal separator (170) includes a rectangular cavity (1700), a blocking plate (1710) and a tensioning screw (1720), wherein the first side of the rectangular cavity (1700) is connected to the rotating shaft (150), the side opposite to the first side of the rectangular cavity (1700) and the blocking plate (1710) are connected to the movement, the rectangular cavity (1700) is loaded with an adsorbent, and the tensioning screw (1720) is used to fix the blocking plate (1710).

[0011] In one embodiment of the present invention, purification sheets (1730) are movably connected on both sides of the rectangular cavity (1700) adjacent to the first side, and a wiping strip (1731) is provided on the outer surface of the purification sheet (1730). A flannel (1732) is arranged on the side of the wiping strip (1731) facing the purification sheet (1730). A driving member (1732) is provided on the inner side of the purification sheet (1730), and the driving member (1732) is connected to the wiping strip (1731). The driving member (1732) is used to drive the wiping strip (1731) to move downward along the upper part of the outer surface of the purification sheet (1730).

[0012] In one embodiment of the present invention, the loading box (240) includes a rectangular inner cavity (2410) and a channel-shaped gasket (2420), and the channel-shaped gasket (2420) is movably connected to the lower surface of the rectangular inner cavity (2410).

[0013] In one embodiment of the present invention, the three-way valve (130) and the first cylindrical through-groove, as well as the fluid channel (180) and the second cylindrical through-groove are connected by a combination of a lead screw and an inner thread.

[0014] Beneficial effects of the present invention:

[0015] The present invention adopts a kinematic connection method to splice the separation device and the sweeping device, and adopts a kinematic connection method to splice the separation device and the sweeping device into the entire pyrolysis gas circulation and transportation equipment, thereby realizing the recycling of the pyrolysis gas, facilitating decomposition and cleaning, and thus greatly improving the recycling rate of the pyrolysis gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a schematic structural diagram of a low-rank coal pyrolysis rotary kiln with pyrolysis gas recycling according to the present invention;

[0017] FIG2 is a schematic diagram of the three-dimensional structure of the pyrolysis gas circulation and transportation equipment according to the present invention in one direction;

[0018] FIG3 is a top view of the pyrolysis gas circulation and conveying equipment according to the present invention;

[0019] FIG4 is a cross-sectional view of the pyrolysis gas circulation and transportation equipment according to the present invention in one direction;

[0020] FIG5 is a cross-sectional view of the pyrolysis gas circulation and transportation equipment according to the present invention in another direction;

[0021] FIG6 is a cross-sectional view of the pyrolysis gas circulation and transportation device according to the present invention in another direction;

[0022] FIG7 is an enlarged structural diagram of point A in FIG3 according to the present invention;

[0023] FIG8 is an enlarged structural diagram of point B in FIG4 according to the present invention;

[0024] FIG9 is an enlarged structural diagram of point C in FIG5 according to the present invention;

[0025] FIG10 is an enlarged structural diagram of point D in FIG5 according to the present invention;

[0026] FIG11 is an enlarged structural diagram of point E in FIG5 according to the present invention. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] FIG1 is a schematic structural diagram of a low-rank coal pyrolysis rotary kiln with pyrolysis gas recycling according to an embodiment of the present invention.

[0029] As shown in FIG1 , the low-rank coal pyrolysis rotary kiln for recycling pyrolysis gas according to an embodiment of the present invention may include: a rotary kiln body 1 and pyrolysis gas circulation and transportation equipment 2 .

[0030] The front end of the rotary kiln body 1 is provided with a feeding end a and an air outlet b, and the rear end of the rotary kiln body 1 is provided with a discharging end c and an air inlet d; the pyrolysis gas circulation conveying equipment 2 is connected to the air outlet b and the air inlet d respectively.

[0031] In one embodiment of the present invention, as shown in FIG. 2-11 , the pyrolysis gas circulation and transportation equipment 2 may include a separation device 10 and a sweeping device 20 .

[0032] The separation device 10 includes a cooking portion 100, a separation sheet 110, a connecting portion 120, a three-way valve 130, a control unit 140, a rotating shaft 150, a barrier sheet 160, a longitudinal separation member 170, a fluid channel 180 and an energy storage portion 190, wherein the bottom of the cooking portion 100 is movably connected to a support seat (not specifically shown in the figure), a separation sheet 110 is provided on the upper portion of the cooking portion 100, and a first sealing cover (not specifically shown in the figure) is provided on the top of the cooking portion 100. The first sealing cover is connected to the air outlet b through an opened through-hole, the cooking portion 100 is adjacent to the connecting portion 120, and the lower portion of the connecting portion 120 is movably connected to the support seat, the first columnar through-hole is evenly opened on one side of the cooking portion 100 close to the connecting portion 120, the first end of the three-way valve 130 is embedded in the first columnar through-hole, the second end and the third end of the three-way valve 130 are both embedded in the connecting portion 120, and the three The second and third ends of the through valve 130 are both equipped with a control unit 140, and the lower surface of the connecting part 120 is evenly equipped with a rotating shaft 150, and the barrier piece 160 is assembled on the top of the connecting part 120. The upper part of the rotating shaft 150 is arranged between the barrier pieces 160, and the middle part of the rotating shaft 150 is provided with a longitudinal separation piece 170. The longitudinal separation piece 170 is evenly distributed around the rotating shaft 150 and is located below the barrier piece 160. The connecting part 120 is also adjacent to the energy storage part 190, and the side of the connecting part 120 close to the energy storage part 190 is evenly opened with a second columnar transparent groove, one end of the fluid channel 180 is embedded in the second columnar transparent groove, and the other end of the fluid channel 180 is embedded in the energy storage part 190. The energy storage part 190 is connected to the support seat for movement, and a second sealing cover is provided on the top of the energy storage part 190. The second sealing cover is connected to the air inlet through the opened transparent opening.

[0033] The cleaning device 20 includes a ratchet disc 200, a strip assembly 210, a ratchet bar 220, an inverted U-shaped sliding plate 230, a loading box 240, a connecting seat 250 and a cleaning tool 260, wherein the ratchet disc 200 is nested in the upper end of the rotating shaft 150, the strip assembly 210 is movably connected above the barrier plate 160, and the strip assembly 210 is respectively arranged on both sides of the ratchet disc 200, the ratchet bar 220 is evenly arranged on the inner side of the mounting plate 210 and engages with the ratchet disc 200, the first bottom end of the inverted U-shaped sliding plate 230 is arranged on the upper surface of the mounting plate 210, and the second bottom end of the inverted U-shaped sliding plate 230 is provided with a connecting seat 250, and the cleaning tools 260 are evenly arranged on the connecting seat 250 in sequence, and the loading box 240 is correspondingly arranged below the cleaning tool 260 and the separating sheet 110.

[0034] Specifically, the energy storage section 190 can be pre-stored with liquid. After the rotary kiln body 1 pyrolyzes low-rank coal, the resulting pyrolysis gas can enter the processing section 100 through the outlet port b and the opening provided in the first sealing cover. At this point, the separator 110 first purifies the pyrolysis gas. The purified pyrolysis gas then passes through the connection section 120 and flows to the energy storage section 190, heating the liquid stored in the energy storage section 190. The heated hot gas then flows through the air inlet d into the rotary kiln body 1 to continue pyrolyzing the low-rank coal. As the purified pyrolysis gas passes through the connection section 120, it strikes the longitudinal separator 170, driving the rotating shaft 150 to rotate. During the rotation of the rotating shaft 150, the longitudinal separator 170 further purifies the pyrolysis gas. The control unit 140 controls the opening / closing of the second and third ends of the three-way valve 130, thereby controlling the rotation direction of the rotating shaft 150.

[0035] When the rotating shaft 150 rotates, the ratchet disc 200 rolls on the ratchet bar 220, thereby driving the strip assembly 210 to move back and forth, and then moving the inverted U-shaped sliding plate 230. During the movement of the U-shaped sliding plate 230, the cleaning tool 260 can be driven to clean the separator 110, thereby improving the working efficiency of the separator 110.

[0036] In one embodiment of the present invention, a plurality of rectangular bars 1000 are inserted and connected to the inner surface of the cooking section 100. These bars 1000 form a connecting frame within the cooking section 100, on which a plurality of screening discs 2000 are arranged. This allows the screening discs 2000 to be removed from the cooking section 100 for cleaning, ensuring their effective purification of the pyrolysis gas.

[0037] In one embodiment of the present invention, a purification sheet 1730 is movably connected to each of two sides of the rectangular cavity 1700 adjacent to the first side. A wiping strip 1731 is provided on the outer surface of the purification sheet 1730. A flannel 1732 is arranged on the side of the wiping strip 1731 facing the purification sheet 1730. A driving member 1732 is provided on the inner side of the purification sheet 1730. The driving member 1732 is connected to the wiping strip 1731 and is used to drive the wiping strip 1731 to move downward along the upper surface of the purification sheet 1730. Specifically, a wiping tool consisting of the wiping strip 1731 and the flannel 1732 can be provided on the purification sheet 1730 and driven by the driving member 1732 to wipe the purification sheet 1730, thereby improving the purification effect of the purification sheet 1730.

[0038] In one embodiment of the present invention, the barrier sheet 160 is movably connected to the upper portion of the connecting portion 120. Multiple slots are defined on the inner wall of the processing portion 100. The separator 110 is inserted into each slot via a protruding structure. The loading box 240 is movably connected to the lower portion of the separator 110. Thus, after the separator 10 has been operating for an extended period of time, the separator 110 and loading box 240 can be disassembled and cleaned.

[0039] The loading box 240 includes a rectangular inner cavity 2410 and a channel-shaped gasket 2420, which is movably connected to the lower surface of the rectangular inner cavity 2410. Therefore, when dirt accumulates on the channel-shaped gasket 2420 to a certain amount, the channel-shaped gasket 2420 can be removed and cleaned, thereby effectively preventing excessive dirt from accumulating in the loading box 240 and submerging the separator 110.

[0040] In one embodiment of the present invention, longitudinal separator 170 includes a rectangular cavity 1700, a blocking piece 1710, and a tensioning screw 1720. A first side of rectangular cavity 1700 is connected to rotating shaft 150, and a side opposite the first side of rectangular cavity 1700 is connected to blocking piece 1710. Adsorbent is loaded into rectangular cavity 1700, and tensioning screw 1720 is used to secure blocking piece 1710. Thus, blocking piece 1710 and rectangular cavity 1700 are designed to be removably connected for easy cleaning.

[0041] In one embodiment of the present invention, the three-way valve 130 and the first cylindrical through-hole, as well as the fluid passage 180 and the second cylindrical through-hole, are both connected by a screw and an internal threaded port. This connection facilitates removal of the three-way valve 130 and the fluid passage 180 for cleaning.

[0042] In summary, the low-rank coal pyrolysis rotary kiln for recycling pyrolysis gas according to an embodiment of the present invention includes a rotary kiln body 1 and a pyrolysis gas circulation conveying device 2. The front end of the rotary kiln body is provided with a feeding end and an air outlet, and the rear end of the rotary kiln body is provided with a discharge end and an air inlet. The pyrolysis gas circulation conveying device 2 is connected to the air outlet and the air inlet, respectively. The pyrolysis gas circulation conveying device 2 includes: a separation device 10 and a cleaning device 20. The separation device 10 includes a processing part 100, a separation sheet 110, a connecting part 120, a three-way valve 130, a control unit 140, a rotating shaft 150, a barrier sheet 160, a longitudinal separation member 170, a fluid channel 180 and an energy storage part 190. The processing part 100 The bottom is connected to the support seat for movement, a separation sheet 110 is provided on the upper part of the cooking portion 100, a first sealing cover is provided on the top of the cooking portion 100, and the first sealing cover is connected to the air outlet through the opened through-hole. The cooking portion 100 is adjacent to the connecting portion 120, and the lower part of the connecting portion 120 is connected to the support seat for movement. The first cylindrical through-hole is opened uniformly on one side of the cooking portion 100 close to the connecting portion 120, and the first end of the three-way valve 130 is embedded in the first cylindrical through-hole, and the second and third ends of the three-way valve 130 are both embedded in the connecting portion 120, and the second and third ends of the three-way valve 130 are both equipped with a control unit 140, and the lower surface of the connecting portion 120 is uniformly equipped with a rotating shaft 150, and the barrier sheet 160 is assembled on the top of the connecting portion 120, the upper part of the rotating shaft 150 is arranged between the barrier pieces 160, and the middle part of the rotating shaft 150 is provided with a longitudinal separator 170, which is evenly distributed around the rotating shaft 150 and is located below the barrier piece 160. The connecting portion 120 is also adjacent to the energy storage portion 190, and the side of the connecting portion 120 close to the energy storage portion 190 is uniformly opened with a second columnar through-groove in sequence, one end of the fluid channel 180 is embedded in the second columnar through-groove, and the other end of the fluid channel 180 is embedded in the energy storage portion 190. The energy storage portion 190 is connected to the support seat for movement. The cleaning device 20 includes a ratchet disc 200, a strip assembly part 210, a ratchet bar 220, an inverted U The inverted U-shaped sliding plate 230, the loading box 240, the connecting seat 250 and the cleaning tool 260, wherein the ratchet disk 200 is nested in the upper end of the rotating shaft 150, the strip assembly 210 is movably connected above the barrier plate 160, and the strip assembly 210 is respectively arranged on both sides of the ratchet disk 200, the ratchet strips 220 are evenly arranged on the inner side of the mounting plate 210 and engage with the ratchet disk 200, the first bottom end of the inverted U-shaped sliding plate 230 is arranged on the upper surface of the mounting plate 210, and the second bottom end of the inverted U-shaped sliding plate 230 is provided with a connecting seat 250, and the cleaning tools 260 are evenly arranged on the connecting seat 250 in sequence, and the loading box 240 is correspondingly arranged below the cleaning tool 260 and the separating sheet 110.Thus, the separation device and the sweeping device are spliced ​​together in a kinematic manner, and the separation device and the sweeping device are spliced ​​together in a kinematic manner to form the entire pyrolysis gas circulation and transportation equipment, thereby realizing the recycling of the pyrolysis gas, facilitating decomposition and cleaning, and thus greatly improving the recycling rate of the pyrolysis gas.

[0043] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. "Multiple" means two or more, unless otherwise specifically defined.

[0044] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0045] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0046] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0047] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing module, or each unit may exist physically separately, or two or more units may be integrated into a single module. The aforementioned integrated modules may be implemented in the form of hardware or in the form of software functional modules. If the integrated modules are implemented in the form of software functional modules and sold or used as independent products, they may also be stored in a computer-readable storage medium.

[0048] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A low-rank coal pyrolysis rotary kiln with pyrolysis gas recycling, characterized in that: The pyrolysis rotary kiln comprises: A rotary kiln body (1), wherein the front end of the rotary kiln body is provided with a feeding end and an air outlet, and the rear end of the rotary kiln body is provided with a discharging end and an air inlet; A pyrolysis gas circulation and transportation device (2), wherein the pyrolysis gas circulation and transportation device (2) is connected to the gas outlet and the gas inlet respectively, wherein the pyrolysis gas circulation and transportation device (2) comprises: a separation device (10) and a cleaning device (20), The separation device (10) comprises a cooking portion (100), a separation sheet (110), a connection portion (120), a three-way valve (130), a control unit (140), a rotating shaft (150), a barrier sheet (160), a longitudinal separation member (170), a fluid channel (180) and an energy storage portion (190), wherein the bottom of the cooking portion (100) is movably connected to a support seat, the upper portion of the cooking portion (100) is provided with the separation sheet (110), and the top of the cooking portion (100) is provided with a first sealing cover, and the first sealing cover is provided with a sealing cover. The sealing cover is connected to the air outlet through a through-hole, the cooking portion (100) is adjacent to the connecting portion (120), the lower portion of the connecting portion (120) is movably connected to the support seat, a first columnar through-hole is uniformly opened in sequence on one side of the cooking portion (100) close to the connecting portion (120), the first end of the three-way valve (130) is embedded in the first columnar through-hole, the second end and the third end of the three-way valve (130) are both embedded in the connecting portion (120), and the second end and the third end of the three-way valve (130) are both The control unit (140) is installed, the lower surface of the connecting part (120) is evenly installed with the rotating shaft (150), the barrier sheet (160) is assembled on the top of the connecting part (120), the upper part of the rotating shaft (150) is arranged between the barrier sheets (160), the middle part of the rotating shaft (150) is provided with the longitudinal separation member (170), the longitudinal separation member (170) is evenly distributed around the rotating shaft (150) and is located below the barrier sheet (160), the connecting part (120) is also adjacent to the energy storage part (190), and a second columnar through-groove is uniformly opened in sequence on one side of the connecting part (120) close to the energy storage part (190), one end of the fluid channel (180) is embedded in the second columnar through-groove, and the other end of the fluid channel (180) is embedded in the energy storage part (190), the energy storage part (190) is movably connected to the support seat, and a second sealing cover is provided on the top of the energy storage part (190), and the second sealing cover is connected to the air inlet through the opened through-groove; The cleaning device (20) comprises a ratchet plate (200), a strip assembly (210), a ratchet strip (220), an inverted U-shaped sliding plate (230), a loading box (240), a connecting seat (250) and a cleaning tool (260). In the embodiment, the ratchet plate (200) is nested in the upper end of the rotating shaft (150), the strip assembly part (210) is movably connected to the top of the barrier plate (160), and the strip assembly part (210) is respectively and correspondingly arranged on both sides of the ratchet plate (200), the ratchet strip (220) is evenly arranged on the inner side of the mounting plate (210) and engages with the ratchet plate (200), the first bottom end of the inverted U-shaped sliding plate (230) is arranged on the upper surface of the mounting plate (210), the second bottom end of the inverted U-shaped sliding plate (230) is provided with the connecting seat (250), and the cleaning tools (260) are evenly arranged on the connecting seat (250) in sequence, and the loading box (240) is correspondingly arranged below the cleaning tool (260) and the separation plate (110).

2. The low-rank coal pyrolysis rotary kiln for recycling pyrolysis gas according to claim 1, characterized in that: The barrier sheet (160) is movably connected to the upper portion of the connecting portion (120); a plurality of slots are provided on the inner wall of the cooking portion (100); the separation sheet (110) is embedded in each of the slots via a protruding structure (1600); and the loading box (240) is movably connected to the lower portion of the separation sheet (110).

3. The low-rank coal pyrolysis rotary kiln for recycling pyrolysis gas according to claim 1, characterized in that: A plurality of rectangular strips (1000) are inserted and connected on the inner surface of the cooking portion (100), and the plurality of rectangular strips (1000) form a connection frame inside the cooking portion (100), and a plurality of screening plates (2000) are arranged on the connection frame.

4. The low-rank coal pyrolysis rotary kiln for recycling pyrolysis gas according to claim 1, characterized in that: The longitudinal separator (170) includes a rectangular cavity (1700), a blocking plate (1710) and a tensioning screw (1720), wherein a first side of the rectangular cavity (1700) is connected to the rotating shaft (150), and a side opposite to the first side of the rectangular cavity (1700) and the blocking plate (1710) are connected to the movement, an adsorbent is loaded in the rectangular cavity (1700), and the tensioning screw (1720) is used to fix the blocking plate (1710).

5. The low-rank coal pyrolysis rotary kiln for recycling pyrolysis gas according to claim 4, characterized in that: Purification sheets (1730) are movably connected to the two sides of the rectangular cavity (1700) adjacent to the first side, respectively; a wiping strip (1731) is provided on the outer surface of the purification sheet (1730); a flannel (1732) is arranged on the side of the wiping strip (1731) facing the purification sheet (1730); a driving member (1732) is provided on the inner side of the purification sheet (1730); the driving member (1732) is connected to the wiping strip (1731); and the driving member (1732) is used to drive the wiping strip (1731) to move downward along the upper side of the outer surface of the purification sheet (1730).

6. The low-rank coal pyrolysis rotary kiln for recycling pyrolysis gas according to claim 1, characterized in that: The loading box (240) comprises a rectangular inner cavity (2410) and a channel steel type gasket (2420), wherein the channel steel type gasket (2420) is movably connected to the lower surface in the rectangular inner cavity (2410).

7. The low-rank coal pyrolysis rotary kiln with pyrolysis gas recycling according to claim 1, characterized in that: The three-way valve (130) and the first columnar through-groove, as well as the fluid channel (180) and the second columnar through-groove, are connected via a combination of a lead screw and an inner threaded port.

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