CN220999582U - Rotary pipe pyrolysis equipment - Google Patents
Rotary pipe pyrolysis equipment Download PDFInfo
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- CN220999582U CN220999582U CN202322926477.XU CN202322926477U CN220999582U CN 220999582 U CN220999582 U CN 220999582U CN 202322926477 U CN202322926477 U CN 202322926477U CN 220999582 U CN220999582 U CN 220999582U
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 claims abstract description 138
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000003546 flue gas Substances 0.000 claims abstract description 27
- 239000007789 gas Substances 0.000 claims abstract description 25
- 238000007599 discharging Methods 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000002912 waste gas Substances 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 13
- 239000000779 smoke Substances 0.000 abstract description 6
- 239000002028 Biomass Substances 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The utility model is a rotary tube pyrolysis apparatus comprising: a feeding device; the feeding side of the reaction device is communicated with the feeding device to pyrolyze the raw materials conveyed by the feeding device; an inner cylinder for receiving hot flue gas for providing pyrolysis heat, the reaction device being mounted on an outer wall of the inner cylinder; an outer cylinder which is arranged at the periphery of the reaction device and is communicated with the inner cylinder and is provided with a smoke outlet; the driving device is used for driving the reaction device and the inner cylinder to slowly rotate; and the gas material output device is arranged on the discharging side of the reaction device. The reaction device comprises a plurality of reaction chambers which are uniformly distributed on the inner cylinder in a cross section spoke wheel type; the inner cylinder and the outer cylinder are communicated through the heating gaps among the reaction chambers, so that the available heat exchange area of the reaction device is greatly increased, the utilization efficiency of flue gas is improved, and the equipment size can be reduced.
Description
Technical Field
The utility model relates to the field of pyrolysis of biomass and low-rank coal, in particular to a rotary tube pyrolysis device for thermally decomposing raw materials with high volatile contents such as biomass, low-rank coal and the like by using hot coal gas.
Background
The rotary furnace is used as equipment for rotationally heating materials, has many applications in industries such as metallurgy, cement, chemical industry and the like, and particularly has wide application in the field of biomass and low-rank coal pyrolysis, but the traditional rotary furnace has the defects of low effective heat exchange area, low heat efficiency, easy blockage of materials, huge equipment volume and the like.
The existing rotary furnace generally adopts single-cylinder direct or indirect heat exchange rotary equipment as shown in figure 1, and because the heat exchange area is limited, the residual flue gas temperature cannot be effectively utilized, the diameter of a single pipe is relatively large, the materials are turned over in the single pipe, and the problem that part of the materials are heated unevenly exists.
Disclosure of Invention
The utility model aims to provide rotary pipe pyrolysis equipment which is used for solving the problems of low heat exchange area, uneven material heating, larger equipment size and the like in the prior art.
The rotary pipe pyrolysis apparatus of the present utility model includes: a feeding device; the feeding side of the reaction device is communicated with the feeding device to pyrolyze the raw materials conveyed by the feeding device; an inner cylinder for receiving hot flue gas for providing pyrolysis heat, the reaction device being mounted on an outer wall of the inner cylinder; an outer cylinder which is arranged at the periphery of the reaction device and is communicated with the inner cylinder and is provided with a smoke outlet; the driving device is used for driving the reaction device and the inner cylinder to slowly rotate; the gas material output device is connected with the discharging side of the reaction device; wherein the reaction device comprises a plurality of reaction chambers which are uniformly distributed on the inner cylinder in a radial wheel shape in the section; the inner cylinder and the outer cylinder are communicated via heating gaps between the plurality of reaction chambers.
Preferably, the reaction device further comprises a cylindrical feeding section positioned at the feeding side and a cylindrical discharging section positioned at the discharging side, and the plurality of independent reaction chambers are respectively connected with the cylindrical feeding section and the cylindrical discharging section of the reaction device.
Preferably, each reaction chamber extends axially along the inner barrel and is fixed to the outer wall of the inner barrel; each heating gap communicating the inner cylinder and the outer cylinder is positioned between two adjacent reaction chambers.
Preferably, the reactor device cylindrical feed section is rotatably mounted on a bearing of the first bearing support facing the first port of the feed device.
Preferably, the first bearing support is provided with a first through hole for communicating the feeding device with a first port of the cylindrical feeding section, and is used for conveying raw materials to the reaction device; the first bearing support is also provided with a second through hole for installing a smoke inlet.
Preferably, a port of the cylindrical feeding section of the reaction device facing the reaction chambers is provided with a first annular end plate which is connected with the outer wall of the inner cylinder and is in butt joint with each reaction chamber; the first annular end plate is provided with through holes which are respectively communicated with the reaction chambers and used for conveying raw materials for pyrolysis to the reaction chambers.
Preferably, the port of the cylindrical discharging section of the reaction device facing the gas material output device is arranged on a bearing of the second bearing support for rotatably supporting the reaction device arranged on the inner cylinder.
Preferably, a port of the cylindrical discharging section of the reaction device facing each reaction chamber is provided with a second annular end plate which is connected with the outer wall of the inner cylinder and is in butt joint with each reaction chamber, and the second annular end plate is provided with through holes which are respectively communicated with each reaction chamber and are used for outputting waste gas and waste materials generated by pyrolysis raw materials of each reaction chamber to a gas material output device.
Preferably, the gas output device is provided with a waste gas outlet and a waste material outlet which are communicated with the cylindrical discharging section of the reaction device.
Preferably, the feeding side of the reaction device is higher than the discharging side of the reaction device, and the included angle between the axis of the reaction device and the horizontal line is more than 0 DEG and less than 5 deg.
The utility model has the beneficial technical effects that the novel combination of the inner cylinder and the outer cylinder and the plurality of spoke wheel type reaction devices is adopted, and the inner cylinder and the outer cylinder are communicated by the flue gas through the gaps among the plurality of reaction chambers of the reaction devices, so that the available heat exchange area of the reaction devices is greatly increased (compared with the traditional pyrolysis equipment, the heat exchange area is increased by more than one time), the utilization efficiency of the flue gas is improved, and the equipment size can be reduced.
The present utility model will be described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic cross-sectional view of a prior art single-tube indirect heat exchange swing apparatus;
FIG. 2 is a schematic illustration of a rotary tube pyrolysis apparatus of the present utility model;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic view of an alternative drive arrangement of the present utility model;
FIG. 5 is a schematic view showing the construction of the inner tube and the reaction apparatus of the present utility model.
Reference numerals illustrate: the device comprises a feed inlet 1, a gas lock 2, a screw 3, a smoke inlet 4, an outer cylinder 5, an inner cylinder 6, a reaction device 7, a bearing support 8, a smoke outlet 9, a driving chain 10, a gas outlet 11, an integral support 12, an integral support 13, a discharge outlet 14, a motor driving device 15 and a reduction gearbox 16.
Detailed Description
As shown in fig. 1, a rotary tube pyrolysis apparatus of the present utility model includes: the feeding device consists of a feeding port 1, a gas lock 2 and a spiral 3; the reaction device 7 is communicated with the feeding device and used for pyrolyzing the raw materials conveyed by the feeding device; an inner cylinder 6 for receiving hot flue gas for providing pyrolysis heat, and a reaction device 7 is mounted on the outer wall of the inner cylinder 6; an outer cylinder 5 which is arranged at the periphery of the reaction device 7 and is communicated with the inner cylinder 6 and is provided with a smoke outlet 9; a driving device for driving the reaction device 7 and the inner cylinder 6 to slowly rotate; and a gas material output device connected with the discharging side of the reaction device 7.
As shown in fig. 2, the reaction device 7 comprises a plurality of reaction chambers 72 which are distributed on the inner cylinder 6 uniformly in a radial shape in cross section; the inner tube 6 and the outer tube 5 communicate via a plurality of heating gaps 723 between the plurality of reaction chambers 72. In fig. 2, the reaction device 7 is provided with 8 reaction chambers 72, and 8 heating gaps 723 are provided. Each reaction chamber 72 is a closed pyrolysis container with a cavity, and includes two side walls 721 respectively connected to the inner cylinder 6 and inclined in opposite directions, and an arc-shaped upper cover 722 connected to the two side walls 721.
Through the structure, the utility model enables the hot flue gas to communicate the inner cylinder with the outer cylinder through the heating gaps 723 of the plurality of reaction chambers 72, and each reaction chamber 72 can exchange heat through the two side walls 721 and the arc-shaped upper cover 722, thereby greatly improving the available heat exchange area of the reaction device, improving the heat exchange efficiency, correspondingly reducing the equipment size, and being more suitable for large-scale projects.
Referring to fig. 5, the reaction device 7 of the present utility model further includes a cylindrical feeding section 71 located at a feeding side, a cylindrical discharging section 73 located at a discharging side, and a plurality of independent reaction chambers 72 are provided between the cylindrical feeding section 71 and the cylindrical discharging section 73 of the reaction device 7 and respectively connect the cylindrical feeding section 71 and the cylindrical discharging section 73. Each reaction chamber 72 extends axially along the inner barrel 6 and is fixed to the inner barrel 6; each heating gap 723, which communicates the inner cylinder 6 with the outer cylinder 5, is located between two adjacent reaction chambers 72.
Referring to fig. 2 and 5, the cylindrical feed section 71 of the reaction device 7 is rotatably mounted on a bearing of the first bearing support 8 facing the first port or barrel of the feed device, such that during rotation of the cylindrical feed section 71 of the reaction device 7 relative to the first bearing support 8, the first port of the cylindrical feed section 71 is covered by said first bearing support 8 except for the part facing the feed device, to avoid heat dissipation and gas escape.
The first bearing support 8 of the present utility model is provided with a first through hole (not shown in the figure) for communicating the feeding device with the first port of the cylindrical feeding section 71, for delivering the raw material to the reaction device 7; the first bearing support 8 is also provided with a second through hole (not shown in the figures) for mounting a flue gas inlet 4 for delivering hot flue gas to the inner drum 6.
Referring to fig. 5, the port of the cylindrical feed section 71 of the reaction apparatus 7 facing the reaction chamber 71 is provided with a first annular end plate 711 connected to the outer wall of the inner cylinder 6 and abutting each reaction chamber 72. The first annular end plate 711 is provided with through holes (not shown) respectively communicating with the respective reaction chambers 72 for feeding the raw materials for carrying out the pyrolysis reaction to the respective reaction chambers 72.
Referring to fig. 5, the cylindrical discharge section 73 of the reaction device 7 is mounted on a bearing of the second bearing support 81 facing the port or cylinder of the gas discharge device so that the reaction device 7 rotatably supported on the inner cylinder 6 can be rotated by the driving means.
Referring to fig. 5, a port of the cylindrical discharging section 73 of the reaction device 7 facing each reaction chamber 72 is provided with a second annular end plate 731 connected with the outer wall of the inner cylinder 6 and abutting each reaction chamber 72, and the second annular end plate 731 is provided with through holes respectively communicated with each reaction chamber 72 for outputting waste gas and waste material generated by pyrolyzing raw materials in each reaction chamber 72 to a gas material output device. The through holes of the second annular end plate 711 and the second annular end plate 731 are adapted to the shape and size of the inner cavity of the reaction chamber.
Referring to fig. 2, the gas output device is a cover body connected to the second bearing support 61, and is provided with a waste gas outlet 11 and a waste material outlet 14 which are communicated with a cylindrical discharge section 73 of the reaction device 7.
The two ends of the outer cylinder 5 provided with the flue gas outlet 9 are respectively fixed on the first bearing support 8 and the second bearing support 81. The outer tube 5 heats the reaction device 7 by the hot flue gas from the inner tube 6, and thermally decomposes the raw material. The edges between the two ends of the outer cylinder 5 and the reaction device 7 are sealed to prevent the leakage of hot flue gas.
Referring to fig. 2 and 5, the flue gas inlet 4 extends into the inner cylinder 6, and the outer wall of the inner cylinder 6 is provided with a long groove 61 communicated with the heating gap 723. The port of the inner cylinder 6 facing the flue gas inlet 4 is provided with a third end plate 61 in rotary contact with the first bearing bracket 8, and the third end plate 61 is provided with a third through hole connected with the flue gas inlet 4. Except for the third through hole in the third end plate 61, other parts of the third end plate 61 are in contact with the first bearing bracket 8 to avoid leakage of hot flue gas.
Referring to fig. 2 and 5, the second bearing support 81 is provided with a third through hole (not shown in the drawings); the port of the inner cylinder 6 facing the gas output device extends into the gas output device via a third through hole in the second bearing support 81 to connect with the drive device. A fourth port 62 is provided in the inner barrel 6 facing the fourth port of the gas output to seal the fourth port.
Referring to fig. 2, a feed port 1 of the present utility model is used for feeding raw materials, and a gas lock 2 is used for preventing hot gas from overflowing. The screw 3 is used to push the raw material into the reaction device 7. The drive means may be constituted by a drive motor 15 and a reduction gearbox 16. The driving motor 15 is mounted on the air output device, and its rotation shaft is connected to the fourth port 62 of the inner cylinder 6 via the reduction gear box 16.
Alternatively, the driving device may be constituted by a driving motor, a reduction gear, and the driving chain 10. The driving motor drives the driving chain 10 to rotate through the reduction gear, and the driving chain 10 is meshed with the outer side teeth of the inner cylinder 6, so that the inner cylinder 6 is driven to rotate.
The working principle of the utility model is as follows: raw materials with higher volatile contents such as biomass, low-rank coal and the like sent from the outside enter a reaction device 7 under the pushing action of a spiral 3 through a feed inlet 1 and a gas locking device 2, a plurality of reaction chambers 72 of the reaction device 7 are arranged between an inner cylinder 6 and an outer cylinder 5 and are uniformly distributed in a radial wheel mode, the inner cylinder 6 and the reaction device rotate slowly together, a feed end is fixedly supported by a bearing support, a discharge end is supported by a gear support, and the gear support rotates under the action of a motor driving device; the flue gas inlet is positioned in the axial direction of the feeding end and is connected with the inner cylinder; the flue gas outlet is positioned at the top of one side of the discharge end of the outer cylinder, the inner cylinder and the outer cylinder are communicated through a gap between the reaction devices, and the flue gas is used for providing heat required by pyrolysis; the gas outlet is arranged at the top of the discharge end, the discharge port is arranged at the bottom of the discharge end, and the discharge port is also provided with a gas locking device; the whole equipment is integrally supported by an integral support; gaps among the outer cylinder, the feeding hole, the discharging hole, the inner cylinder and the reaction device of the whole equipment are sealed by filling materials.
Preferably, the feeding side of the reaction device 7 is higher than the discharging side of the reaction device, and the included angle between the axis of the reaction device and the horizontal line is more than 0 degrees and less than 5 degrees;
Preferably, the flue gas temperature range of the utility model is set to 400-800 ℃;
preferably, the inner cylinder 6 and the reaction device 7 perform coaxial slow rotation, and the rotating speed is less than or equal to 5r/min;
Preferably, a plurality of reaction chambers 72 of the reaction device 7 are uniformly distributed between the inner cylinder and the outer cylinder in radial shape, the number of the reaction chambers can be n (n is an integer more than or equal to 2), the gap angle of each reaction chamber is 4-6 degrees, and the gap of each reaction chamber is communicated with the inner cylinder and the outer cylinder;
preferably, the air lock adopts a rotary discharge valve with higher sealing performance;
Preferably, the motor drive means employs a gear drive;
Preferably, the inner and outer barrel diameters can be designed according to the feed characteristics and discharge requirements.
Preferably, the particle size of the raw materials fed into the reaction apparatus should be 10mm or less.
The utility model has the following technical effects that the novel mode of combining the inner cylinder and the outer cylinder with the plurality of spoke wheel type reaction devices is adopted, the inner cylinder and the outer cylinder are communicated through the gaps among the reaction devices, the available heat exchange area of the reaction devices is greatly improved (compared with the traditional pyrolysis equipment, the heat exchange area is improved by more than one time), the utilization efficiency of the flue gas is improved, and the equipment size is reduced.
Specifically, the traditional single-cylinder indirect heat exchange rotary tube is generally that materials enter an inner cylinder, flue gas enters an outer cylinder, and the heat exchange area S=2n pi R×L (equipment length). According to the utility model, n radial wheel-shaped reaction devices are added between the inner cylinder and the outer cylinder, the inner cylinder and the outer cylinder are communicated through the reaction device gap, and under the condition that the diameters of the outer cylinder and the reaction device are the same as those of the outer cylinder and the inner cylinder of the traditional rotary pipe and the equipment length is the same (the external dimensions of the two equipment are the same), the flue gas heat exchange area is increased by the circumscribed round part and the gap part of the inner cylinder and the reaction device; if the diameter of the inner cylinder is R, the increased heat exchange area is DeltaS= [ 2n (R-R) +2n R ]. Times.L (equipment length), and if r=1/2R and n=8 in the embodiment, deltaS is approximately equal to 1.8S, the utility model realizes 1.8 times of increase of the heat exchange area on the premise of unchanged total size of the equipment, and the heat exchange efficiency is greatly improved by innovation of the structure of the utility model; correspondingly, on the premise of realizing the same heat exchange effect, the size of the device can be reduced by more than half compared with that of the traditional single-cylinder device.
The foregoing description of only one embodiment of the utility model has been presented for purposes of illustration and description, but is not to be construed as limiting the scope of the utility model. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept.
Claims (10)
1. A rotary tube pyrolysis apparatus, comprising:
A feeding device;
A reaction device (7) the feeding side of which is communicated with a feeding device to pyrolyze the raw materials conveyed by the feeding device;
An inner cylinder (6) for receiving hot flue gas for providing pyrolysis heat, the reaction device (7) being mounted on an outer wall of the inner cylinder (6);
an outer cylinder (5) which is arranged at the periphery of the reaction device (7) and is communicated with the inner cylinder (6) and is provided with a flue gas outlet (9);
A driving device for driving the reaction device (7) and the inner cylinder (6) to slowly rotate;
a gas output device connected with the discharge side of the reaction device (7);
Wherein the reaction device (7) comprises a plurality of reaction chambers (72) which are uniformly distributed on the inner cylinder (6) in a radial wheel type cross section; the inner tube (6) and the outer tube (5) communicate via heating gaps (723) between the plurality of reaction chambers (72).
2. The rotary tube pyrolysis apparatus according to claim 1, characterized in that the reaction device (7) further comprises a cylindrical feeding section (71) located at a feeding side and a cylindrical discharging section (73) located at a discharging side, and the plurality of reaction chambers (72) are respectively connected to the cylindrical feeding section (71) and the cylindrical discharging section (73) of the reaction device (7).
3. A rotary tube pyrolysis apparatus according to claim 2, wherein each reaction chamber (72) extends axially along the inner drum (6) and is fixed to the outer wall of the inner drum (6); the heating gap of each communicating inner cylinder (6) and outer cylinder (5) is located between two adjacent reaction chambers (72).
4. A rotary tube pyrolysis apparatus according to claim 2, characterized in that the cylindrical feed section (71) of the reaction device (7) is rotatably mounted on bearings of the first bearing support (8) facing the first port of the feed device.
5. The rotary tube pyrolysis apparatus according to claim 4, characterized in that the first bearing support (8) is provided with a first through hole for communicating a feeding device with a first port of a cylindrical feeding section (71) for delivering raw materials to the reaction device (7); the first bearing support (8) is also provided with a second through hole for installing the flue gas inlet (4).
6. A rotary tube pyrolysis apparatus according to claim 2, characterized in that the port of the tubular feed section (71) of the reaction device (7) facing the reaction chambers (72) is provided with a first annular end plate (711) connected to the outer wall of the inner cylinder (6) and abutting each reaction chamber (72); the first annular end plate (711) is provided with through holes which are respectively communicated with the reaction chambers (72) and used for conveying raw materials for pyrolysis to the reaction chambers (72).
7. A rotary tube pyrolysis apparatus according to claim 2, characterized in that the ports of the tubular discharge section (73) of the reaction device (7) facing the gas output are mounted on bearings of the second bearing support (81) for rotatably supporting the reaction device (7) mounted on the inner cylinder (6).
8. The rotary pipe pyrolysis apparatus according to claim 2, characterized in that the port of the cylindrical discharge section (73) of the reaction device (7) facing each reaction chamber (72) is provided with a second annular end plate (731) connected with the outer wall of the inner cylinder (6) and butted with each reaction chamber (72), and the second annular end plate (731) is provided with through holes respectively communicated with each reaction chamber (72) for outputting waste gas and waste material generated by pyrolysis raw materials of each reaction chamber (72) to a gas output device.
9. The rotary tube pyrolysis apparatus according to claim 2 or 8, characterized in that the gas output device is provided with a waste gas outlet (11) and a waste material outlet (14) which are communicated with the cylindrical discharge section (73) of the reaction device (7).
10. A rotary tube pyrolysis apparatus according to claim 1, characterized in that the feed side of the reaction device (7) is higher than the discharge side of the reaction device, the axis of which is arranged at an angle of more than 0 ° and less than 5 ° to the horizontal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322926477.XU CN220999582U (en) | 2023-10-31 | 2023-10-31 | Rotary pipe pyrolysis equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322926477.XU CN220999582U (en) | 2023-10-31 | 2023-10-31 | Rotary pipe pyrolysis equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220999582U true CN220999582U (en) | 2024-05-24 |
Family
ID=91123098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322926477.XU Active CN220999582U (en) | 2023-10-31 | 2023-10-31 | Rotary pipe pyrolysis equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220999582U (en) |
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2023
- 2023-10-31 CN CN202322926477.XU patent/CN220999582U/en active Active
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