CN210689173U - High-efficient external heating formula rotary kiln - Google Patents
High-efficient external heating formula rotary kiln Download PDFInfo
- Publication number
- CN210689173U CN210689173U CN201921683284.3U CN201921683284U CN210689173U CN 210689173 U CN210689173 U CN 210689173U CN 201921683284 U CN201921683284 U CN 201921683284U CN 210689173 U CN210689173 U CN 210689173U
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- Prior art keywords
- flue gas
- temperature flue
- kiln body
- pyrolysis
- chamber
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 33
- 238000000197 pyrolysis Methods 0.000 claims abstract description 84
- 239000000463 material Substances 0.000 claims abstract description 65
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 107
- 239000003546 flue gas Substances 0.000 claims description 107
- 239000007789 gas Substances 0.000 claims description 27
- 230000007246 mechanism Effects 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 3
- 239000000779 smoke Substances 0.000 abstract description 23
- 238000010586 diagram Methods 0.000 description 4
- 238000009413 insulation 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
- 230000008569 process Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000008642 heat stress Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Muffle Furnaces And Rotary Kilns (AREA)
- Gasification And Melting Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The utility model relates to a high-efficiency external heating rotary kiln, which belongs to the technical field of rotary kilns and particularly comprises a screw conveyor and a low-temperature smoke collecting chamber which are arranged at the feed end of a kiln body, wherein the screw conveyor runs through the low-temperature smoke collecting chamber, a pyrolysis material collecting device is arranged at the discharge end of the kiln body, an annular high-temperature smoke distributing chamber is arranged on the inner wall of the kiln body close to the discharge end, one side of the annular high-temperature smoke distributing chamber is communicated with the low-temperature smoke collecting chamber through a plurality of smoke heat exchange tubes, the other side of the annular high-temperature smoke distributing chamber is communicated with a high-temperature smoke central tube through a high-temperature smoke conduit, a high-temperature smoke collecting chamber is arranged at the end part of the high-temperature smoke central tube, and the high-temperature smoke collecting chamber is connected with the high-temperature smoke tube, the heat loss is small.
Description
Technical Field
The utility model relates to a high-efficient external heating formula rotary kiln belongs to rotary kiln technical field.
Background
The known rotary kiln heating device has two heating modes, namely an internal heating mode and an external heating mode, wherein the internal heating mode directly contacts a heating medium with a heated medium, so that the generated volatile gas has low heat value and low subsequent utilization value, and not only is energy waste caused, but also the energy waste is opposite to a clean and efficient utilization policy. The external heating type heating mode currently disclosed has jacket type heating and radiant tube type heating. The heat exchange area of jacket type heating can only be realized by increasing the equipment area, the heat efficiency is low, the processing capacity is low, and the large-scale production is influenced. Radiant tube heating adopts outside hot flue gas chamber mode of admitting air, and outside hot flue gas chamber sets up and is being close to the partial middle part position of rotary kiln, and hot flue gas import and discharge end department material can't effectively heat, and heat utilization rate 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-term operation of the equipment is not facilitated.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem that prior art exists, the utility model provides a reasonable in design, flue gas chamber and the kiln body direct contact not can effectively avoid kiln body high temperature to lead to the kiln body to warp, the little high-efficient external heating type rotary kiln of heat waste.
In order to achieve the purpose, the technical scheme adopted by the utility model is a high-efficiency external heating type rotary kiln, which comprises a kiln body, wherein a screw conveyor and a low-temperature smoke collecting chamber are installed at the feed end of the kiln body, the screw conveyor runs through the low-temperature smoke collecting chamber, a discharge port extends into the kiln body and is arranged on the central axis of the kiln body, a pyrolysis material collecting device is installed at the discharge end of the kiln body, an annular high-temperature smoke distributing chamber is installed on the inner wall of the kiln body close to the discharge end, one side of the annular high-temperature smoke distributing chamber is communicated with the low-temperature smoke collecting chamber through a plurality of smoke heat exchange tubes, a plurality of supporting mechanisms for supporting the smoke heat exchange tubes are arranged on the inner wall of the kiln body, the other side of the annular high-temperature smoke distributing chamber is communicated with the high-temperature smoke central axis through a high-temperature smoke guide tube, the, and the tip runs through pyrolysis material collection device, be provided with a plurality of backup pads between high temperature flue gas center tube and the kiln body, the tip of high temperature flue gas center tube is installed the high temperature flue gas collection chamber, the high temperature flue gas collection chamber is connected with the high temperature flue gas pipe, between low temperature flue gas collection chamber and the kiln body, between screw conveyer and the low temperature flue gas collection chamber, between pyrolysis material collection device and the kiln body, between pyrolysis material collection device and the high temperature flue gas center tube, all adopt rotary seal to be connected between high temperature flue gas center tube and the high temperature flue gas collection chamber.
Preferably, the discharge end of the kiln body is of a conical structure, and the pyrolysis material collecting device is installed 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 in rotary seal 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 feed opening.
Preferably, pyrolysis material collection device mainly collects the cover by the pyrolysis material and pyrolyzes the gas delivery pipe and constitutes, the cover is collected to the pyrolysis material and the discharge end rotary seal of the kiln body, the bottom that the cover was collected to the pyrolysis material is provided with pyrolysis material feed opening, the pyrolysis gas delivery pipe runs through high temperature flue gas collection chamber, the cover is collected to the pyrolysis material and extends to the internal portion of kiln, and pyrolyzes the gas delivery pipe and set up with the high temperature flue gas center tube is concentric, pyrolyze the gas delivery pipe and high temperature flue gas collection chamber, adopt rotary seal between the cover is collected to the pyrolysis material, the outer wall of pyrolysis gas delivery pipe is provided with thermal-insulated heat.
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 chamber units.
Preferably, 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 all provided with heat insulation layers.
Preferably, a plurality of temperature sensors are mounted 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 support columns.
Compared with the prior art, the utility model discloses following technological effect has: the hot flue gas enters the high-temperature flue gas distribution chamber in the kiln body through the high-temperature flue gas central tube and the high-temperature flue gas guide tube, is not in direct contact with the kiln body, reduces the requirement on equipment materials, reduces the thermal stress of the kiln body, reduces the equipment cost, and improves the stability of long-period operation of the equipment; the heat utilization is facilitated, the heat efficiency is improved, and the heated medium is heated more uniformly to reach 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 all 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 favorable for reducing the heat stress of the tube plate; the structure of the pyrolysis material collecting device is flexibly arranged and can be adjusted according to the process condition; the rotary kiln is provided with a plurality of temperature sensors to realize the control of a heat supply system of the whole device, the control of the rotating speed of the rotary kiln and the control of the material heating degree.
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 problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
As shown in fig. 1, a high-efficiency external heating type rotary kiln comprises a kiln body 1, a screw conveyor 2 and a low-temperature flue gas collecting chamber 3 are installed at a feed end of the kiln body 1, the screw conveyor 2 penetrates through the low-temperature flue gas collecting chamber 3, a discharge port extends into the kiln body and is arranged on a central axis of the kiln body 1, a pyrolysis material collecting device is installed at a discharge end of the kiln body 1, an annular high-temperature flue gas distributing chamber 5 is installed on an inner wall of the kiln body 1 close to the discharge end, 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, a plurality of supporting mechanisms for supporting the flue gas heat exchange tubes are arranged on an inner wall of the kiln body 1, 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, be provided with a plurality of backup pads 4 between high temperature flue gas center tube 8 and the kiln body 1, high temperature flue gas collection chamber 9 is installed to the tip of high temperature flue gas center tube 8, high temperature flue gas collection chamber 9 is connected with the high temperature flue gas pipe, between low temperature flue gas collection chamber 3 and the kiln body 1, between screw conveyer 2 and the low temperature flue gas collection chamber 3, between pyrolysis material collection device and the kiln body 1, between pyrolysis material collection device and the high temperature flue gas center tube 8, all adopt rotary seal to be connected between high temperature flue gas center tube 8 and the high temperature flue gas collection chamber 9.
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 chamber 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 collecting device is a pyrolysis material collecting cover 10, the pyrolysis material collecting cover 10 is in rotary sealing with the discharge end of the kiln body 1, the top of the pyrolysis material collecting cover 10 is provided with a pyrolysis gas outlet, and the bottom of the pyrolysis material collecting cover is provided with a pyrolysis material feed opening. The annular high-temperature flue gas distribution chamber 5 and the inner wall of the rotary kiln 1 are fixedly connected 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 a rotary kiln shell and forming a heat dissipation channel.
The utility model discloses well raw materials pass through screw conveyer 2 and carry to the kiln internal, and the kiln body heating carries out drying, pyrolysis to the raw materials, and the material after the pyrolysis gets into pyrolysis material along with the kiln body rotates and collects the cover 10 in, discharges through the pyrolysis material feed opening of bottom, and the high temperature gas that the pyrolysis produced gets into next process through the pyrolysis gas outlet at top. Wherein when heating, adopt the mode of heat transfer heating, collect the flue gas through high temperature flue gas collection chamber 9, then through high temperature flue gas center tube 8, high temperature flue gas pipe 7 distributes to annular high temperature flue gas distribution chamber 5, through annular high temperature flue gas distribution chamber 5 with high temperature flue gas evenly distributed to in the flue gas heat exchange tube, the flue gas heat exchange tube passes through supporting mechanism to be fixed in the kiln body, and be circular arrangement, the center of flue gas heat exchange tube constitutes the circulation passageway, when the raw materials flows through the circulation passageway, carry out the heat exchange, dry, the pyrolysis to the raw materials. The number of the heat exchange tubes of the flue gas can be calculated according to the process.
Wherein, the inner walls of the kiln body 1, the high-temperature flue gas collection chamber 9, the high-temperature flue gas central pipe 8 and the high-temperature flue gas guide pipe 7 are all provided with heat insulation layers. Not only reduces calorific loss, simultaneously protects the high-temperature flue gas collection chamber, and installs a plurality of temperature sensor on the high-temperature flue gas center tube kiln body 1 inner wall to realize the control of the heating system of whole device, the rotational speed control of rotary kiln and the control of material heating degree.
Example two
As shown in fig. 2, the pyrolysis material collection device mainly comprises a pyrolysis material collection cover 10 and a pyrolysis gas delivery pipe 11, the pyrolysis material collection cover 10 and the discharge end rotary seal of the kiln body 1, the bottom of the pyrolysis material collection cover 10 is provided with a pyrolysis material feed opening, the pyrolysis gas delivery pipe 11 runs through a high-temperature flue gas collection chamber 9, the pyrolysis material collection cover 10 extends to the inside of the kiln body 1, and the pyrolysis gas delivery pipe 11 and a high-temperature flue gas central pipe 8 are concentrically arranged, the pyrolysis gas delivery pipe 11 and the high-temperature flue gas collection chamber 9, rotary seal is adopted between the pyrolysis material collection cover 10, and the outer wall of the pyrolysis gas delivery pipe 11 is provided with a heat insulation layer. The rest is the same as the first embodiment.
The pyrolysis material collecting device adopts the design of a pyrolysis material collecting cover 10 and a pyrolysis gas conveying pipe 11, and the pyrolysis gas conveying pipe conveys pyrolysis gas in the axial direction, so that the arrangement is flexible and the use is convenient. Because pyrolysis gas conveyer pipe 11 is worn out from the center of high temperature flue gas center tube 8, so pyrolysis gas conveyer pipe 11 outside sets up thermal-insulated heat preservation, protects pyrolysis gas conveyer pipe 11.
EXAMPLE III
As shown in fig. 3, when the high temperature flue gas central pipe 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 rest is the same as the first embodiment. The high-temperature flue gas central tube extends to the center of the annular high-temperature flue gas distribution chamber, and in order to ensure that the high-temperature flue gas distribution chamber and the high-temperature flue gas central tube have enough discharge space, one end of the high-temperature flue gas distribution chamber is provided with taper, so that the discharge amount is ensured.
EXAMPLE III
As shown in fig. 4, when the high temperature flue gas central pipe 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 rest is the same as the embodiment. The high-temperature flue gas central tube extends to the center of the annular high-temperature flue gas distribution chamber, and in order to ensure that the high-temperature flue gas distribution chamber and the high-temperature flue gas central tube have enough discharge space, one end of the high-temperature flue gas distribution chamber is provided with taper, so that the discharge amount is ensured.
The foregoing is considered as illustrative and not restrictive of the preferred embodiments of the invention, and any modifications, equivalents and improvements made within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (8)
1. The utility model provides a high-efficient external heating formula rotary kiln, includes the kiln body, its characterized in that: the kiln comprises a kiln body, a kiln body and a kiln body, wherein a feed end of the kiln body is provided with a spiral conveyor and a low-temperature flue gas collecting chamber, the spiral conveyor penetrates through the low-temperature flue gas collecting chamber, a discharge port extends into the kiln body and is arranged on the central axis of the kiln body, a discharge end of the kiln body is provided with a pyrolysis material collecting device, an annular high-temperature flue gas distribution chamber is arranged on the inner wall of the kiln body close to the discharge end, 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 tubes, the inner wall of the kiln body 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 distribution chamber is communicated with a high-temperature flue gas central tube through a high-temperature flue gas guide tube, the high-temperature, the end part of the high-temperature flue gas central pipe is provided with a high-temperature flue gas collection chamber, the high-temperature flue gas collection chamber is connected with the high-temperature flue gas pipe, and the low-temperature flue gas collection chamber is connected with the kiln body, the spiral material conveyor is connected with the low-temperature flue gas collection chamber, the pyrolysis material collection device is connected with the kiln body, the pyrolysis material collection device is connected with the high-temperature flue gas central pipe, and the high-temperature flue gas central pipe is connected with the high-temperature flue gas collection chamber in.
2. The high-efficiency external heating type rotary kiln as claimed 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 high-efficiency external heating type rotary kiln as claimed in claim 1, wherein: the pyrolysis material collecting device is a pyrolysis material collecting cover, the pyrolysis material collecting cover is in rotary seal 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 feed opening.
4. The high-efficiency external heating type rotary kiln as claimed in claim 1, wherein: the pyrolysis material collection device mainly comprises a pyrolysis material collection cover and a pyrolysis gas conveying pipe, the pyrolysis material collection cover is rotary sealed with the discharge end of the kiln body, the bottom of the pyrolysis material collection cover is provided with a pyrolysis material feed opening, the pyrolysis gas conveying pipe penetrates through a high-temperature flue gas collection chamber and the pyrolysis material collection cover and extends to the inside of the kiln body, the pyrolysis gas conveying pipe and a high-temperature flue gas central pipe are concentrically arranged, the pyrolysis gas conveying pipe and the high-temperature flue gas collection chamber and the pyrolysis material collection cover adopt rotary seals, and the outer wall of the pyrolysis gas conveying pipe is provided with a fireproof heat preservation layer.
5. A high efficiency external heating type rotary kiln according to any one of claims 1 to 4, wherein: 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 chamber units.
6. The high-efficiency external heating type rotary kiln as claimed in claim 1, wherein: and 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 all provided with fireproof heat preservation layers.
7. The high-efficiency external heating type rotary kiln as claimed in claim 1, wherein: and a plurality of temperature sensors are arranged on the inner wall of the kiln body.
8. The high-efficiency external heating type rotary kiln as claimed in claim 1, wherein: the annular high-temperature flue gas distribution chamber is fixedly connected with the inner wall of the rotary kiln through support columns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921683284.3U CN210689173U (en) | 2019-10-10 | 2019-10-10 | High-efficient external heating formula rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921683284.3U CN210689173U (en) | 2019-10-10 | 2019-10-10 | High-efficient external heating formula rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210689173U true CN210689173U (en) | 2020-06-05 |
Family
ID=70901497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921683284.3U Withdrawn - After Issue CN210689173U (en) | 2019-10-10 | 2019-10-10 | High-efficient external heating formula rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210689173U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631357A (en) * | 2019-10-10 | 2019-12-31 | 山西智容新能源科技有限公司 | High-efficiency external heating type rotary kiln |
-
2019
- 2019-10-10 CN CN201921683284.3U patent/CN210689173U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631357A (en) * | 2019-10-10 | 2019-12-31 | 山西智容新能源科技有限公司 | High-efficiency external heating type rotary kiln |
| CN110631357B (en) * | 2019-10-10 | 2023-12-26 | 白太宽 | High-efficiency external heating rotary kiln |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220325 Address after: 474550 no.110-21, Baiyu Road, Chengguan Town, Xixia County, Nanyang City, Henan Province Patentee after: Bai Taikuan Address before: 030006 2101, block a, Gaoxin Guozhi building, No.3, Dongyi second lane, Taiyuan Xuefu Park, Xiaodian District, Taiyuan City, Shanxi Province Patentee before: Shanxi Zhirong New Energy Technology Co.,Ltd. |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200605 Effective date of abandoning: 20231226 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200605 Effective date of abandoning: 20231226 |