CN110631357B - High-efficiency external heating rotary kiln - Google Patents
High-efficiency external heating rotary kiln Download PDFInfo
- Publication number
- CN110631357B CN110631357B CN201910956688.3A CN201910956688A CN110631357B CN 110631357 B CN110631357 B CN 110631357B CN 201910956688 A CN201910956688 A CN 201910956688A CN 110631357 B CN110631357 B CN 110631357B
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- Prior art keywords
- flue gas
- temperature flue
- kiln body
- pyrolysis
- pyrolysis material
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 31
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 144
- 239000003546 flue gas Substances 0.000 claims abstract description 144
- 238000000197 pyrolysis Methods 0.000 claims abstract description 78
- 239000000463 material Substances 0.000 claims abstract description 62
- 238000007599 discharging Methods 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims description 27
- 230000007246 mechanism Effects 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000036760 body temperature Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/08—Rotary-drum furnaces, i.e. horizontal or slightly inclined externally heated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/34—Arrangements of heating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/42—Arrangement of controlling, monitoring, alarm or like devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Gasification And Melting Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a high-efficiency external heating rotary kiln, which belongs to the technical field of rotary kilns, and particularly comprises a feeding end of a kiln body, wherein a screw conveyor and a low-temperature flue gas collecting chamber are arranged at the feeding end of the kiln body, the screw conveyor penetrates through the low-temperature flue gas collecting chamber, a pyrolysis material collecting device is arranged at the discharging end of the kiln body, an annular high-temperature flue gas distributing chamber is arranged on the inner wall of the kiln body close to the discharging end, one side of the annular high-temperature flue gas distributing chamber is communicated with the low-temperature flue gas collecting chamber through a plurality of flue gas heat exchange pipes, the other side of the annular high-temperature flue gas distributing chamber is communicated with a high-temperature flue gas central pipe through a high-temperature flue gas pipe, and a high-temperature flue gas collecting chamber is arranged at the end part of the high-temperature flue gas central pipe and connected with the high-temperature flue gas pipe.
Description
Technical Field
The invention relates to an efficient external heating rotary kiln, and belongs to the technical field of rotary kilns.
Background
In the known rotary kiln heating device, there are two heating modes of internal heating type and external heating type, the internal heating type directly contacts the heating medium with the heated medium, so that the heat value of the generated volatile gas is low, the subsequent available value is low, not only energy waste is caused, but also the method is contrary to the policy of clean and high-efficiency utilization. The external heating mode is currently disclosed as jacket type heating and radiant tube type heating. The heat exchange area of the jacket type heating can only be realized by increasing the area of the equipment, so that the heat efficiency is low, the treatment capacity is low, and the large-scale production is influenced. The radiant tube type heating adopts the mode of external hot flue gas chamber to admit air, and external hot flue gas chamber sets up in being close to rotary kiln partial middle part position, and hot flue gas import and discharge end department material can't effectively heat, and the heat utilization efficiency is low. The temperature of the contact part of the hot flue gas and the equipment is very high, the requirements on the material and the strength of the equipment are high, the thermal stress is difficult to eliminate, the heat loss is increased, the equipment investment is increased, and the long-period operation of the equipment is not facilitated.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides the high-efficiency external heating rotary kiln which is reasonable in design, does not directly contact a flue gas chamber with a kiln body, and can effectively avoid deformation of the kiln body caused by overhigh kiln body temperature and small heat loss.
In order to achieve the above purpose, the technical scheme adopted by the invention is that the high-efficiency external heating type rotary kiln comprises a kiln body, wherein a screw conveyor and a low-temperature flue gas collecting chamber are arranged at the feeding end of the kiln body, the screw conveyor penetrates through the low-temperature flue gas collecting chamber, a discharging port extends into the kiln body and is arranged on the central axis of the kiln body, a pyrolysis material collecting device is arranged at the discharging end of the kiln body, an annular high-temperature flue gas distributing chamber is arranged on the inner wall of the kiln body close to the discharging end, one side of the annular high-temperature flue gas distributing chamber is communicated with the low-temperature flue gas collecting chamber through a plurality of flue gas heat exchange pipes, a plurality of supporting mechanisms for supporting the flue gas heat exchange pipes are arranged on the inner wall of the kiln body, the other side of the annular high-temperature flue gas distributing chamber is communicated with the high-temperature flue gas collecting chamber through a high-temperature flue gas guide pipe, the high-temperature flue gas central pipe is arranged on the central axis of the kiln body, a plurality of supporting plates are arranged between the high-temperature flue gas central pipe and the kiln body, the end of the high-temperature central pipe is provided with a plurality of supporting plates, the end of the high-temperature collecting chamber is arranged between the high-temperature collecting chamber and the high-temperature flue gas collecting device, and the high-temperature flue gas collecting device is connected with the high-temperature flue gas collecting device by adopting a rotary pyrolysis material collecting device, and a rotary seal mode, and the high-temperature flue gas collecting device is arranged between the high-temperature flue gas collecting device and the high-temperature flue gas collecting device.
Preferably, the discharge end of the kiln body is of a conical structure, and the pyrolysis material collecting device is arranged at the end part of the conical structure.
Preferably, the pyrolysis material collecting device is a pyrolysis material collecting cover, the pyrolysis material collecting cover is rotationally sealed with the discharge end of the kiln body, the top of the pyrolysis material collecting cover is provided with a pyrolysis gas outlet, and the bottom of the pyrolysis material collecting cover is provided with a pyrolysis material discharging opening.
Preferably, the pyrolysis material collection device mainly comprises pyrolysis material collection cover and pyrolysis gas conveyer pipe, pyrolysis material collection cover and the discharge end rotary seal of kiln body, pyrolysis material collection cover's bottom is provided with pyrolysis material feed opening, pyrolysis gas conveyer pipe runs through high temperature flue gas plenum chamber, pyrolysis material collection cover and extends to the kiln body inside, and pyrolysis gas conveyer pipe and the concentric setting of high temperature flue gas center tube, adopt rotary seal between pyrolysis gas conveyer pipe and high temperature flue gas plenum chamber, the pyrolysis material collection cover, the outer wall of pyrolysis gas conveyer pipe is provided with thermal-insulated heat preservation.
Preferably, the annular high-temperature flue gas distribution chamber is a complete annular cavity structure or an annular structure formed by combining a plurality of independent cavity units.
Preferably, the inner walls of the kiln body, the high-temperature flue gas collecting chamber, the high-temperature flue gas central pipe and the high-temperature flue gas guide pipe are all provided with heat insulation layers.
Preferably, a plurality of temperature sensors are arranged on the inner wall of the kiln body.
Preferably, the annular high-temperature flue gas distribution chamber is fixedly connected with the inner wall of the rotary kiln through a support column.
Compared with the prior art, the invention has the following technical effects: the hot flue gas enters the high-temperature flue gas distribution chamber in the kiln body through the high-temperature flue gas central pipe and the high-temperature flue gas guide pipe, is not in direct contact with the kiln body, reduces the requirements on equipment materials, reduces the thermal stress of the kiln body, reduces the equipment cost, and improves the stability of long-period running of the equipment; the heat utilization is facilitated, the heat efficiency is improved, and the heated medium is heated more uniformly and reaches the expected temperature; the inner walls of the kiln body, the high-temperature flue gas collection chamber, the high-temperature flue gas central pipe and the high-temperature flue gas guide pipe are provided with heat insulation layers, so that heat loss is reduced, and the high-temperature flue gas collection chamber and the high-temperature flue gas central pipe are protected; the annular high-temperature flue gas distribution chamber is arranged in the rotary kiln, and the annular structure is beneficial to reducing the thermal stress of the tube plate; the pyrolysis material collecting device is flexible in structural arrangement and can be adjusted according to the technological conditions; the rotary kiln is provided with a plurality of temperature sensors so as to realize the control of a heating system of the whole device, the control of the rotating speed of the rotary kiln and the control of the heating degree of materials.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a third embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a fourth embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1, the efficient external heating rotary kiln comprises a kiln body 1, a screw conveyor 2 and a low-temperature flue gas collecting chamber 3 are installed at the feeding end of the kiln body 1, the screw conveyor 2 penetrates through the low-temperature flue gas collecting chamber 3, a discharging port extends into the kiln body and is arranged on the central axis of the kiln body 1, a pyrolysis material collecting device is installed at the discharging end of the kiln body 1, an annular high-temperature flue gas distributing chamber 5 is installed on the inner wall, close to the discharging end, of the kiln body 1, one side of the annular high-temperature flue gas distributing chamber 5 is communicated with the low-temperature flue gas collecting chamber 3 through a plurality of flue gas heat exchange tubes 6, the inner wall of the kiln body 1 is provided with a plurality of supporting mechanisms for supporting the flue gas heat exchange tubes, the other side of the annular high-temperature flue gas distributing chamber 5 is communicated with a high-temperature flue gas central tube 8 through a high-temperature flue gas guide tube 7, the high-temperature flue gas central tube 8 is arranged on the central axis of the kiln body 1, the end penetrates through a pyrolysis material collecting device, a plurality of supporting plates 4 are arranged between the high-temperature flue gas central tube 8 and the kiln body 1, a high-temperature flue gas collecting chamber 9 is installed at the end of the high-temperature central tube 8, the high-temperature flue gas collecting device 9 is connected between the high-temperature flue gas central tube 9 and the high-temperature flue gas collecting device and the low-temperature flue gas collecting device and the high-temperature flue gas collecting device, and the high-temperature flue gas collecting device is connected between the high-temperature flue gas collecting device and the kiln 1, and the high-temperature central tube 1, and the high-temperature flue gas collecting device is sealed by adopting the high-temperature flue gas collecting device and the high-temperature flue gas collecting device.
The annular high-temperature flue gas distribution chamber is of a complete annular cavity structure or an annular structure formed by combining a plurality of independent cavity units. The discharge end of the kiln body 1 is of a conical structure, and the pyrolysis material collecting device is arranged at the end part of the conical structure. The pyrolysis material collection device is a pyrolysis material collection cover 10, the pyrolysis material collection cover 10 is rotationally sealed with the discharge end of the kiln body 1, the top of the pyrolysis material collection cover 10 is provided with a pyrolysis gas outlet, and the bottom is provided with a pyrolysis material discharging opening. The annular high-temperature flue gas distribution chamber 5 is fixedly connected with the inner wall of the rotary kiln 1 through the support columns 12, so that a heat dissipation gap is formed between the annular high-temperature flue gas distribution chamber 5 and the rotary kiln 1, and the heat dissipation gap is used for preventing heat from being transferred to the rotary kiln shell and simultaneously forming a heat dissipation channel.
In the invention, raw materials are conveyed into a kiln body through a screw conveyor 2, the kiln body is heated to dry and pyrolyze the raw materials, the pyrolyzed materials rotate along with the kiln body and enter a pyrolyzed material collecting cover 10, the pyrolyzed materials are discharged through a pyrolyzed material discharging opening at the bottom, and high-temperature gas generated by pyrolysis enters the next working procedure through a pyrolyzed gas outlet at the top. During heating, the flue gas is collected through the high-temperature flue gas collecting chamber 9 in a heat exchange heating mode, then is distributed to the annular high-temperature flue gas distribution chamber 5 through the high-temperature flue gas central pipe 8 and the high-temperature flue gas guide pipe 7, the high-temperature flue gas is uniformly distributed to the flue gas heat exchange pipes through the annular high-temperature flue gas distribution chamber 5, the flue gas heat exchange pipes are fixed in the kiln body through the supporting mechanism and are circularly arranged, the centers of the flue gas heat exchange pipes form a circulation channel, and when raw materials flow through the circulation channel, heat exchange is carried out to dry and pyrolyze the raw materials. The number of the flue gas heat exchange tubes can be calculated according to the process.
Wherein, the inner walls of the kiln body 1, the high-temperature flue gas collecting chamber 9, the high-temperature flue gas central tube 8 and the high-temperature flue gas guide tube 7 are all provided with heat insulation layers. The heat loss is reduced, the high-temperature flue gas collecting chamber is protected, and a plurality of temperature sensors are arranged on the inner wall of the high-temperature flue gas central tube kiln body 1, so that the control of a heating system of the whole device, the control of the rotating speed of the rotary kiln and the control of the heating degree of materials are realized.
Example two
As shown in fig. 2, the pyrolysis material collecting device mainly comprises a pyrolysis material collecting cover 10 and a pyrolysis gas conveying pipe 11, the pyrolysis material collecting cover 10 is rotationally sealed with the discharge end of the kiln body 1, a pyrolysis material discharging opening is formed in the bottom of the pyrolysis material collecting cover 10, the pyrolysis gas conveying pipe 11 penetrates through the high-temperature flue gas collecting chamber 9, the pyrolysis material collecting cover 10 extends to the inside of the kiln body 1, the pyrolysis gas conveying pipe 11 and the high-temperature flue gas central pipe 8 are concentrically arranged, the pyrolysis gas conveying pipe 11, the high-temperature flue gas collecting chamber 9 and the pyrolysis material collecting cover 10 are rotationally sealed, and a heat insulation layer is arranged on the outer wall of the pyrolysis gas conveying pipe 11. The remainder is the same as in embodiment one.
The pyrolysis material collecting device adopts the design of pyrolysis material collecting hood 10 and pyrolysis gas conveying pipe 11, and the pyrolysis gas conveying pipe is from axial conveying pyrolysis gas, arranges in a flexible way, convenient to use. Because the pyrolysis gas conveying pipe 11 passes through the center of the high-temperature flue gas central pipe 8, a heat insulation layer is arranged outside the pyrolysis gas conveying pipe 11 to protect the pyrolysis gas conveying pipe 11.
Example III
As shown in fig. 3, when the high-temperature flue gas central tube 8 extends to the center of the annular high-temperature flue gas distribution chamber, one end of the annular high-temperature flue gas distribution chamber is provided with a taper. The remainder is the same as in embodiment one. The center of the annular high-temperature flue gas distribution chamber is extended by the high-temperature flue gas central tube, so that the high-temperature flue gas distribution chamber and the high-temperature flue gas central tube have enough discharging space, and one end of the high-temperature flue gas distribution chamber is provided with taper to ensure discharging quantity.
Example IV
As shown in fig. 4, when the high-temperature flue gas central tube 8 extends to the center of the annular high-temperature flue gas distribution chamber, one end of the annular high-temperature flue gas distribution chamber is provided with a taper. The remainder was the same as in the example. The center of the annular high-temperature flue gas distribution chamber is extended by the high-temperature flue gas central tube, so that the high-temperature flue gas distribution chamber and the high-temperature flue gas central tube have enough discharging space, and one end of the high-temperature flue gas distribution chamber is provided with taper to ensure discharging quantity.
The foregoing description of the preferred embodiment of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. The utility model provides a high-efficient external heating rotary kiln, includes the kiln body, its characterized in that: the feeding end of the kiln body is provided with a spiral feeder and a low-temperature flue gas collecting chamber, the spiral feeder penetrates through the low-temperature flue gas collecting chamber, the discharge hole extends into the kiln body and is arranged on the central axis of the kiln body, the discharge end of the kiln body is provided with a pyrolysis material collecting device, the inner wall of the kiln body close to the discharge end is provided with an annular high-temperature flue gas distribution chamber, one side of the annular high-temperature flue gas distribution chamber is communicated with the low-temperature flue gas collecting chamber through a plurality of flue gas heat exchange pipes, the inner wall of the kiln body is provided with a plurality of supporting mechanisms for supporting the flue gas heat exchange pipes, the other side of the annular high-temperature flue gas distribution chamber is communicated with a high-temperature flue gas central pipe through a high-temperature flue gas guide pipe, the high-temperature flue gas central tube is arranged on the central axis of the kiln body, the end part of the high-temperature flue gas central tube penetrates through the pyrolysis material collecting device, a plurality of supporting plates are arranged between the high-temperature flue gas central tube and the kiln body, a high-temperature flue gas collecting chamber is arranged at the end part of the high-temperature flue gas central tube, the high-temperature flue gas collecting chamber is connected with the high-temperature flue gas tube, and rotary sealing connection is adopted between the low-temperature flue gas collecting chamber and the kiln body, between the spiral conveyor and the low-temperature flue gas collecting chamber, between the pyrolysis material collecting device and the kiln body, between the pyrolysis material collecting device and the high-temperature flue gas central tube, and between the high-temperature flue gas central tube and the high-temperature flue gas collecting chamber;
the pyrolysis material collection device mainly comprises a pyrolysis material collection cover and a pyrolysis gas conveying pipe, the pyrolysis material collection cover is rotationally sealed with the discharge end of the kiln body, a pyrolysis material discharging opening is formed in the bottom of the pyrolysis material collection cover, the pyrolysis gas conveying pipe penetrates through a high-temperature flue gas collection chamber and the pyrolysis material collection cover to extend into the kiln body, the pyrolysis gas conveying pipe and the high-temperature flue gas central pipe are concentrically arranged, the pyrolysis gas conveying pipe, the high-temperature flue gas collection chamber and the pyrolysis material collection cover are rotationally sealed, and a fireproof heat-insulating layer is arranged on the outer wall of the pyrolysis gas conveying pipe.
2. The efficient external heating rotary kiln as defined in claim 1, wherein: the discharge end of the kiln body is of a conical structure, and the pyrolysis material collecting device is arranged at the end part of the conical structure.
3. The efficient external heating rotary kiln as defined in claim 1, wherein: the pyrolysis material collection device is a pyrolysis material collection cover, the pyrolysis material collection cover is rotationally sealed with the discharge end of the kiln body, the top of the pyrolysis material collection cover is provided with a pyrolysis gas outlet, and the bottom of the pyrolysis material collection cover is provided with a pyrolysis material discharging opening.
4. A high efficiency external heating rotary kiln according to any of claims 1-3, characterized in that: the annular high-temperature flue gas distribution chamber is of a complete annular cavity structure or an annular structure formed by combining a plurality of independent cavity units.
5. The efficient external heating rotary kiln as defined in claim 1, wherein: the inner walls of the kiln body, the high-temperature flue gas collecting chamber, the high-temperature flue gas central pipe and the high-temperature flue gas guide pipe are all provided with fireproof heat preservation layers.
6. The efficient external heating rotary kiln as defined in claim 1, wherein: a plurality of temperature sensors are arranged on the inner wall of the kiln body.
7. The efficient external heating rotary kiln as defined in claim 1, wherein: the annular high-temperature flue gas distribution chamber is fixedly connected with the inner wall of the rotary kiln through a support column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910956688.3A CN110631357B (en) | 2019-10-10 | 2019-10-10 | High-efficiency external heating rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910956688.3A CN110631357B (en) | 2019-10-10 | 2019-10-10 | High-efficiency external heating rotary kiln |
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| Publication Number | Publication Date |
|---|---|
| CN110631357A CN110631357A (en) | 2019-12-31 |
| CN110631357B true CN110631357B (en) | 2023-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910956688.3A Active CN110631357B (en) | 2019-10-10 | 2019-10-10 | High-efficiency external heating rotary kiln |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103409155A (en) * | 2012-11-27 | 2013-11-27 | 山东天力干燥股份有限公司 | Multi-tube rotary furnace and method for performing low-temperature carbonization on materials by using multi-tube rotary furnace |
| CN104845647A (en) * | 2015-05-05 | 2015-08-19 | 郭秀梅 | Low-rank coal quality-improving pyrolysis equipment |
| CN106350085A (en) * | 2016-09-09 | 2017-01-25 | 新疆广汇中化能源技术开发有限公司 | Dry distillation apparatus |
| CN206069777U (en) * | 2016-08-11 | 2017-04-05 | 中信重工机械股份有限公司 | A kind of low order low-temperature pyrolysis of coal horizontal revolving kiln |
| CN107033940A (en) * | 2017-05-12 | 2017-08-11 | 中信重工机械股份有限公司 | A kind of efficient pyrolysis of coal device and method for pyrolysis for carrying dedusting function |
| CN206721115U (en) * | 2016-12-12 | 2017-12-08 | 朱书红 | Material heater |
| CN210689173U (en) * | 2019-10-10 | 2020-06-05 | 山西智容新能源科技有限公司 | High-efficient external heating formula rotary kiln |
-
2019
- 2019-10-10 CN CN201910956688.3A patent/CN110631357B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103409155A (en) * | 2012-11-27 | 2013-11-27 | 山东天力干燥股份有限公司 | Multi-tube rotary furnace and method for performing low-temperature carbonization on materials by using multi-tube rotary furnace |
| CN104845647A (en) * | 2015-05-05 | 2015-08-19 | 郭秀梅 | Low-rank coal quality-improving pyrolysis equipment |
| CN206069777U (en) * | 2016-08-11 | 2017-04-05 | 中信重工机械股份有限公司 | A kind of low order low-temperature pyrolysis of coal horizontal revolving kiln |
| CN106350085A (en) * | 2016-09-09 | 2017-01-25 | 新疆广汇中化能源技术开发有限公司 | Dry distillation apparatus |
| CN206721115U (en) * | 2016-12-12 | 2017-12-08 | 朱书红 | Material heater |
| CN107033940A (en) * | 2017-05-12 | 2017-08-11 | 中信重工机械股份有限公司 | A kind of efficient pyrolysis of coal device and method for pyrolysis for carrying dedusting function |
| CN210689173U (en) * | 2019-10-10 | 2020-06-05 | 山西智容新能源科技有限公司 | High-efficient external heating formula rotary kiln |
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