CN215675202U - Vertical rotary kiln for pyrolysis and gasification of solid waste - Google Patents
Vertical rotary kiln for pyrolysis and gasification of solid waste Download PDFInfo
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- CN215675202U CN215675202U CN202122248284.4U CN202122248284U CN215675202U CN 215675202 U CN215675202 U CN 215675202U CN 202122248284 U CN202122248284 U CN 202122248284U CN 215675202 U CN215675202 U CN 215675202U
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- rotary kiln
- kiln
- grate
- rotary
- support
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 18
- 238000002309 gasification Methods 0.000 title claims abstract description 15
- 239000002910 solid waste Substances 0.000 title claims abstract description 15
- 239000002893 slag Substances 0.000 claims abstract description 22
- 238000003860 storage Methods 0.000 claims abstract description 8
- 230000007704 transition Effects 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000005192 partition Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 230000009467 reduction Effects 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000011449 brick Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 2
- 230000001174 ascending effect Effects 0.000 claims description 2
- 239000003546 flue gas Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 239000010813 municipal solid waste Substances 0.000 abstract description 14
- 238000009826 distribution Methods 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 2
- 239000002956 ash Substances 0.000 description 7
- 230000006872 improvement Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 239000002906 medical waste Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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- Gasification And Melting Of Waste (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Incineration Of Waste (AREA)
Abstract
The utility model discloses a solid waste pyrolysis gasification vertical rotary kiln, which comprises a rotary kiln body, wherein a kiln cover is arranged at the upper part of the rotary kiln body, an impeller type feeder and a transition flue are arranged on the kiln cover, a storage bin is arranged on the impeller type feeder, a rotary kiln seat is arranged at the lower part of the rotary kiln body, a rotary kiln grate is arranged in the rotary kiln seat, meanwhile, the rotary kiln seat is arranged on a rotary table bearing support, an ash receiving hopper is arranged below the rotary table bearing support, the lower part of the ash receiving hopper is inserted into a slag pond, the slag pond is communicated with the outside through a slag remover, and in addition, the rotary kiln grate is connected with a primary fan through an air pipe. The kiln comprises a drying section, a pyrolysis and gasification section, a high-temperature incineration section, a burnout section and a grate protection section from top to bottom, a kiln body part with high temperature is protected by a water-cooled wall, the grate is safe and reliable to operate due to reasonable temperature distribution, garbage is completely incinerated in a high-temperature layer, and the burning amount of incineration residues is low.
Description
Technical Field
The utility model belongs to the field of environmental protection equipment, and particularly relates to a vertical rotary kiln for pyrolysis and gasification of solid waste, which is used for treating municipal and rural domestic waste, medical waste and industrial solid waste.
Background
The currently domestic garbage incinerator types can be divided into: fixed bed incinerator, fluidized bed incinerator, and horizontal rotary kiln type incinerator. The fixed bed incinerator has the longest development history and mature technology, but has poor combustion stability, higher thermal ignition loss of slag discharge, insufficient incineration when mechanical stirring is not thorough, difficult control of combustion temperature, and more slag discharge and harmful gas generation. The fire grate needs to be made of high-grade heat-resistant alloy steel, so that the investment and maintenance cost are high. The fire grate of the fixed bed incinerator has various structural forms, such as a fixed fire grate furnace, a reciprocating fire grate furnace, a movable fire grate furnace, a multi-stage roller fire grate furnace and the like. The most widely used is an inclined push type grate furnace, such as a Martin reverse push type grate incinerator, and the garbage is fully preheated and stirred in the furnace. The production technology of key parts such as the grate of the incinerator and the like is difficult, and at present, the corresponding production technology is not mastered in China actually and mainly depends on introduction.
The horizontal rotary kiln type incinerator is mainly used for treating industrial garbage or special garbage such as organic sludge and the like, and has little achievement for incinerating domestic garbage.
The fluidized bed incinerator is characterized in that quartz sand or furnace slag with a certain thickness and a certain particle size range is paved in the incinerator, air with a certain pressure is blown in through a bottom air distribution plate, and sand grains are blown up, overturned and floated. The fluidized bed incinerator has advanced technology but higher pretreatment requirement, large fly ash production amount, high load of a tail gas treatment system, high power load and easy abrasion of a furnace body.
Disclosure of Invention
In view of the above, the present invention provides a vertical rotary kiln for pyrolysis and gasification of solid waste.
In order to achieve the purpose, the technical scheme is as follows:
a vertical rotary kiln for pyrolysis gasification of solid waste, comprising:
the rotary kiln body, the kiln lid is installed on rotary kiln body upper portion, install impeller feeder and transition flue on the kiln lid, install the storage silo on the impeller feeder, rotary kiln seat is installed to rotary kiln body lower part, set up the rotary kiln grate in the rotary kiln seat, and simultaneously, rotary kiln seat installs at carousel bearing, and the ash bucket is installed to carousel bearing below, connects ash bucket lower part to insert the slag bath, and the slag bath passes through slagging-off machine and outside intercommunication, and in addition, there is the vertical ascending one end of tuber pipe that stretches into in the kiln below the rotary kiln grate, and the tuber pipe other end is connected with a fan.
As a further improvement of the utility model: the rotary kiln body consists of a steel cylinder, an aluminum silicate folding block and a high-alumina brick from outside to inside in sequence.
As a further improvement of the utility model: the kiln cover is provided with a feed opening, a flue gas outlet, a water filling opening and a steam outlet;
the rotary kiln is characterized in that the upper end of the rotary kiln body and the kiln cover are occluded and sealed through a stainless steel water sealing ring, a water jacket is installed on the lower portion of the rotary kiln body and is formed by welding two steel cylinders, a water inlet pipe and a steam pipe are arranged on the water jacket, and a slag stirring rod and a first manhole are arranged on the lower portion of the water jacket.
As a further improvement of the utility model: the rotary kiln grate comprises a kiln grate partition plate, the kiln grate partition plate is installed on a kiln grate support, a kiln grate shaft is installed in the middle of the kiln grate support, the kiln grate shaft is installed on a rotary kiln seat through being fixed on a cross beam steel frame, and a gear of an output end of a first speed reduction motor installed on the rotary kiln seat is kneaded with a toothed ring installed on the kiln grate support, so that the kiln grate partition plate is driven to rotate around the kiln grate shaft.
As a further improvement of the utility model: the rotary kiln is characterized in that the rotary disc bearing support comprises an upper support, the upper support is connected with the lower portion of the rotary kiln seat, the upper support is connected with the upper portion of the rotary disc bearing, the lower portion of the rotary disc bearing is connected with the upper portion of a lower support, the lower portion of the lower support is connected with a ground equipment foundation, and a second speed reduction motor arranged on the lower support drives the rotary disc bearing to drive the rotary kiln body to rotate at a constant speed.
As a further improvement of the utility model: the ash receiving hopper comprises an upper cone and a lower straight cylinder, the upper cone is welded with the upper support and used for collecting slag blocks, and the lower straight cylinder and the upper cone are welded and then inserted into a water seal tank below the rotary kiln body to play a water seal role.
The utility model has the beneficial effects that:
(1) the investment cost is low, and compared with other methods, the investment is saved by 1/3-1/2;
(2) the operation is completely mechanized and automated, and the wastes can be directly fed into the kiln without sorting, screening and crushing;
(3) the specially designed feeding system can realize the uniform distribution of the garbage in the kiln;
(4) the rotary grate adopted by the kiln has stronger functions of crushing and discharging slag, and the better protection technology of the grate is adopted, so that the grate is ensured to have smaller temperature deformation and smaller friction at a higher hearth temperature, and the service life is very long;
(5) the kiln comprises a drying section, a pyrolysis and gasification section, a high-temperature incineration section, a burnout section and a grate protection section from top to bottom, a kiln body part with high temperature is protected by a water-cooled wall, the grate is safe and reliable to operate due to reasonable temperature distribution, garbage is completely incinerated in a high-temperature layer, and the burning loss of incineration residues is low and is far less than 5 percent or even can reach 2 percent.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of the kiln cover of FIG. 1;
FIG. 3 is a schematic structural view of the rotary kiln body in FIG. 1;
FIG. 4 is a schematic view of the rotary grate of FIG. 1;
FIG. 5 is a schematic view of the rotary kiln mount of FIG. 1;
FIG. 6 is a schematic structural view of the slew bearing mount of FIG. 1;
fig. 7 is a schematic structural view of the ash receiving hopper in fig. 1.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Please refer to fig. 1-7:
a vertical rotary kiln for pyrolysis and gasification of solid waste comprises a rotary kiln body 10, a kiln cover 11 is arranged at the upper part of the rotary kiln body 10, the kiln cover 11 is provided with a feed opening 111, a smoke outlet 112, a water filling opening 113 and a steam outlet 114, the feed opening 111 of the kiln cover 11 is provided with an impeller feeder 12 and a transition flue 4 arranged on the smoke outlet 112, the impeller feeder 12 is provided with a storage bin 13, the lower part of the rotary kiln body 10 is provided with a rotary kiln seat 14, a rotary kiln grate 15 is arranged in the rotary kiln seat 14, meanwhile, the rotary kiln base 14 is arranged on a rotary disc bearing support 16, an ash receiving hopper 17 is arranged below the rotary disc bearing support 16, the lower part of the ash receiving hopper 17 is inserted into a slag pool, the slag pool is communicated with the outside through a belt conveying type slag remover 18, in addition, one end of an air pipe a which extends into the kiln is arranged below the rotary kiln grate 15, the vertical upward end of the air pipe a is arranged, and the other end of the air pipe a is connected with a primary air fan 19; the upper end of the rotary kiln body 10 and the kiln cover 11 are occluded and sealed through a stainless steel water sealing ring 115, the lower part of the rotary kiln body 10 is provided with a water jacket 101, the water jacket 101 is formed by welding two steel cylinders, the water jacket 101 is provided with a water inlet pipe 102 and a steam pipe 103, and the lower part of the water jacket 101 is provided with a slag removing rod 104 and a first manhole 105;
the rotary kiln body 10 consists of a steel cylinder, an aluminum silicate folding block and a high-alumina brick from outside to inside in sequence;
the rotary kiln grate 15 comprises a kiln grate partition plate 151, the kiln grate partition plate 151 is installed on a kiln grate support 152, a kiln grate shaft 153 is installed in the middle of the kiln grate support 152, the kiln grate shaft 153 is installed on the rotary kiln seat 14 through being fixed on a cross beam steel frame 154, a gear at the output end of a first speed reduction motor 155 installed on the rotary kiln seat 14 is kneaded with a toothed ring installed on the kiln grate support 152, so that the kiln grate partition plate 151 is driven to rotate around the kiln grate shaft 153, and in addition, a flange 141 and a second manhole 142 for installing the first speed reduction motor 155 are arranged on the outer wall of the rotary kiln seat 14.
The turntable bearing support 16 comprises an upper support 161, the upper support 161 is connected with the lower part of the rotary kiln base 14, the upper support 161 is connected with the upper part of a turntable bearing 162, the lower part of the turntable bearing 162 is connected with the upper part of a lower support 163, the lower part of the lower support 163 is connected with a ground equipment foundation, and a second speed reducing motor 164 arranged on the lower support 163 drives the turntable bearing 162 to drive the rotary kiln body 10 to rotate at a constant speed.
The ash receiving hopper 17 comprises an upper cone 171 and a lower straight cylinder 172, the upper cone 171 is welded with an upper flange of the upper support 161 for collecting slag blocks, and the lower straight cylinder 172 is welded with the upper cone 171 and then inserted into a water seal tank below the rotary kiln body 10 to play a role of water seal.
The working principle is as follows: solid waste is poured into a storage bin 13 above an impeller feeder 12 through a travelling grab bucket, the height of the storage bin 13 is generally about 4 meters, the height of the waste in the storage bin is required to be kept above 2.5 meters, and therefore the purpose of compacting and pressing the storage bin 13 by using the weight of the waste is to keep the negative pressure in the kiln and prevent smoke from leaking. The speed reduction motor arranged on the impeller feeder 12 is controlled by a frequency converter, and the garbage can be ensured to uniformly and effectively enter the rotary kiln body 10 by adjusting the speed of the speed reduction motor. And at the same time of blanking, the second speed reducing motor 164 on the lower support 163 controls the rotating speed by the frequency converter to drive the rotary kiln body 10 to rotate at a constant speed. Therefore, the garbage can be uniformly distributed on the rotary kiln grate 15 arranged in the rotary kiln seat 14, and the garbage can be continuously pyrolyzed and gasified in the kiln. The primary air fan 19 sends air into the kiln from bottom to top through the air pipe, and the design can ensure that the rotary kiln grate can be cooled and not burnt out by high temperature while providing oxygen required by garbage pyrolysis. When the residue generated after the garbage pyrolysis is sufficiently accumulated on the rotary kiln grate 15, the first speed reduction motor 155 on the rotary kiln base 14 is started to drive the kiln grate partition plates 151 to rotate around the kiln grate shafts 153, so as to achieve the purpose of breaking the residue and discharging the residue. The residue falls through the hopper 17 onto the slag remover 18, and the slag remover 18 is started to bring the residue to the ground. Combustible gas generated by pyrolysis of the garbage in the kiln enters the secondary combustion chamber through the transition flue.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A vertical rotary kiln for pyrolysis gasification of solid waste, comprising:
the rotary kiln body, the kiln lid is installed on rotary kiln body upper portion, install impeller feeder and transition flue on the kiln lid, install the storage silo on the impeller feeder, rotary kiln seat is installed to rotary kiln body lower part, set up the rotary kiln grate in the rotary kiln seat, and simultaneously, rotary kiln seat installs at carousel bearing, and the ash bucket is installed to carousel bearing below, connects ash bucket lower part to insert the slag bath, and the slag bath passes through slagging-off machine and outside intercommunication, and in addition, there is the vertical ascending one end of tuber pipe that stretches into in the kiln below the rotary kiln grate, and the tuber pipe other end is connected with a fan.
2. The vertical rotary kiln for pyrolysis gasification of solid waste according to claim 1, wherein: the rotary kiln body consists of a steel cylinder, an aluminum silicate folding block and a high-alumina brick from outside to inside in sequence.
3. The vertical rotary kiln for pyrolysis gasification of solid waste according to claim 1, wherein: the kiln cover is provided with a feed opening, a flue gas outlet, a water filling opening and a steam outlet;
the rotary kiln is characterized in that the upper end of the rotary kiln body and the kiln cover are occluded and sealed through a stainless steel water sealing ring, a water jacket is installed on the lower portion of the rotary kiln body and is formed by welding two steel cylinders, a water inlet pipe and a steam pipe are arranged on the water jacket, and a slag stirring rod and a first manhole are arranged on the lower portion of the water jacket.
4. The vertical rotary kiln for pyrolysis gasification of solid waste according to claim 1, wherein: the rotary kiln grate comprises a kiln grate partition plate, the kiln grate partition plate is installed on a kiln grate support, a kiln grate shaft is installed in the middle of the kiln grate support, the kiln grate shaft is installed on a rotary kiln seat through being fixed on a cross beam steel frame, and a gear of an output end of a first speed reduction motor installed on the rotary kiln seat is kneaded with a toothed ring installed on the kiln grate support, so that the kiln grate partition plate is driven to rotate around the kiln grate shaft.
5. The vertical rotary kiln for pyrolysis gasification of solid waste according to claim 1, wherein: the rotary kiln is characterized in that the rotary disc bearing support comprises an upper support, the upper support is connected with the lower portion of the rotary kiln seat, the upper support is connected with the upper portion of the rotary disc bearing, the lower portion of the rotary disc bearing is connected with the upper portion of a lower support, the lower portion of the lower support is connected with a ground equipment foundation, and a second speed reduction motor arranged on the lower support drives the rotary disc bearing to drive the rotary kiln body to rotate at a constant speed.
6. The vertical rotary kiln for pyrolysis gasification of solid waste according to claim 5, wherein: the ash receiving hopper comprises an upper cone and a lower straight cylinder, the upper cone is welded with the upper support and used for collecting slag blocks, and the lower straight cylinder and the upper cone are welded and then inserted into a water seal tank below the rotary kiln body to play a water seal role.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122248284.4U CN215675202U (en) | 2021-09-16 | 2021-09-16 | Vertical rotary kiln for pyrolysis and gasification of solid waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122248284.4U CN215675202U (en) | 2021-09-16 | 2021-09-16 | Vertical rotary kiln for pyrolysis and gasification of solid waste |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215675202U true CN215675202U (en) | 2022-01-28 |
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ID=79964566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122248284.4U Active CN215675202U (en) | 2021-09-16 | 2021-09-16 | Vertical rotary kiln for pyrolysis and gasification of solid waste |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215675202U (en) |
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2021
- 2021-09-16 CN CN202122248284.4U patent/CN215675202U/en active Active
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