CN211176819U - Straw combustion device - Google Patents
Straw combustion device Download PDFInfo
- Publication number
- CN211176819U CN211176819U CN201922032347.5U CN201922032347U CN211176819U CN 211176819 U CN211176819 U CN 211176819U CN 201922032347 U CN201922032347 U CN 201922032347U CN 211176819 U CN211176819 U CN 211176819U
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- straw
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- feeding
- storage chamber
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- 239000010902 straw Substances 0.000 title claims abstract description 145
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 82
- 239000000428 dust Substances 0.000 claims abstract description 28
- 238000005520 cutting process Methods 0.000 claims abstract description 17
- 238000003860 storage Methods 0.000 claims abstract description 16
- 239000004744 fabric Substances 0.000 claims abstract description 15
- 239000002893 slag Substances 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims description 29
- 238000007602 hot air drying Methods 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 8
- 239000003546 flue gas Substances 0.000 abstract description 8
- 239000000779 smoke Substances 0.000 abstract description 8
- 239000007789 gas Substances 0.000 abstract description 7
- 239000002918 waste heat Substances 0.000 abstract description 6
- 239000003337 fertilizer Substances 0.000 abstract description 5
- 238000005457 optimization Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 3
- 241000238631 Hexapoda Species 0.000 description 2
- 241000209140 Triticum Species 0.000 description 2
- 235000021307 Triticum Nutrition 0.000 description 2
- 241000607479 Yersinia pestis Species 0.000 description 2
- 240000008042 Zea mays Species 0.000 description 2
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 235000005822 corn Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000003306 harvesting Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 240000002791 Brassica napus Species 0.000 description 1
- 235000006008 Brassica napus var napus Nutrition 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000219146 Gossypium Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 240000000111 Saccharum officinarum Species 0.000 description 1
- 235000007201 Saccharum officinarum Nutrition 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000013325 dietary fiber Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000012015 potatoes Nutrition 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Gasification And Melting Of Waste (AREA)
Abstract
The utility model discloses a straw combustion device, which comprises a straw feeding and conveying device, a straw cutting device, a combustion furnace chamber, a heat exchange pipeline and a cloth bag dust removal device which are connected in sequence; the bottom of the combustion hearth is provided with an air chamber and a slag storage chamber, and the top of the combustion hearth is provided with an induced draft fan; the bottom of the cloth bag dust removing device is provided with a conical ash storage chamber; the bottom of the ash storage chamber is provided with an ash outlet door. The whole combustion device adopts a complete set of combustion device from preheating-conveying-section cutting-combustion process flow, is suitable for being used in a village and town range, and solves the problem of large-volume straw conveying. The straw is preheated by utilizing the backflow of the waste heat of the burnt flue gas, the straw humidity is reduced, and the straw burning efficiency is improved. The whole combustion device is totally enclosed, so that the smoke content in the combustion tail gas is effectively reduced, the smoke content in the combustion tail gas can be reduced by more than 95%, and the combustion dust can be collected and utilized as fertilizer. The device adopts automatic control from the section cutting to the straw conveying and entering the combustion furnace, so that the labor is reduced, and the conveying efficiency is improved.
Description
Technical Field
The invention relates to the technical field of environment-friendly equipment, in particular to a straw combustion device.
Background
The straw is a general term of stem leaf (ear) part of mature crops. Typically refers to the remainder of the wheat, rice, corn, potatoes, oilseed rape, cotton, sugar cane and other crops (typically roughages) after harvesting the seed. During summer harvest and autumn and winter each year, a large amount of straws of wheat, corn and the like are produced, according to relevant statistics, as a big agricultural country, China can generate more than 7 hundred million tons of straws every year, and the straws become wastes which are not useful but need to be disposed.
Previously, straw could be directly incinerated or used as a source of energy for rural households. However, the straw is burnt in the field to generate a large amount of dense smoke, which not only becomes a bottleneck problem of rural environment protection, but also even becomes a main cause of compromising the urban environment. With the enhancement of the national environmental protection policy, open-air straw burning is forbidden, the original open-air straw burning mode in the countryside is forbidden in all the places and the countryside, and farmers face the difficult problem of straw treatment year by year. At present, several ways of returning straws to fields, thermal power generation or feeding stuff are carried out. But all have disadvantages: 1. the straw returning mode is adopted, so that firstly, plant diseases and insect pests cannot be eliminated, and diseases and insect pests are too grave in the next year, and the growth of crops is influenced; secondly, the materials contained in the straws are easy to cause soil hardening. 2. The straw is used for thermal power generation, and the straw needs to be transported to a large-scale power station for centralized incineration, but the straw is too dispersed and has low density, so that long-distance transportation is difficult, the transportation cost is high, and the application condition is not good. 3. The crushed straws are used as feed, but the processing cost is too high, the use amount is limited, and the straws are not accepted by common people. Therefore, the effective treatment of the straws becomes a big problem in China and rural areas and needs to be solved urgently.
Disclosure of Invention
In order to overcome the technical defects, the invention aims to provide a complete set of combustion device which integrally adopts the technological process of preheating, conveying, cutting and combustion, and solves the problems of large-volume conveying and combustion of straws; the waste heat of the combusted flue gas is used for backflow, so that the humidity of the straw is reduced, and the combustion efficiency of the straw is improved; the smoke content in the combustion tail gas is effectively reduced by adopting a full-closed type; the straw combustion device has the advantages of small occupied area, simple and convenient operation and low investment, can be widely applied to villages and towns, avoids large-volume straw transportation, realizes on-site straw combustion, and is energy-saving and environment-friendly.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the technical scheme is that the straw combustion device comprises a straw feeding and conveying device, a straw cutting device, a combustion hearth, a heat exchange pipeline and a cloth bag dust removal device which are connected in sequence; the bottom of the combustion hearth is provided with an air chamber and a slag storage chamber, and the top of the combustion hearth is provided with an induced draft fan; the bottom of the cloth bag dust removing device is provided with a conical ash storage chamber; the bottom of the ash storage chamber is provided with an ash outlet door.
As optimization, the straw cutting device is connected with a straw drying device through a bucket elevator; the straw drying device is connected with the combustion furnace chamber.
As optimization, the whole straw feeding and conveying device is arranged in the straw drying device in a closed manner, and a straw feeding hole is formed in the straw drying device; the straw feeding and conveying device is a straw belt conveyor.
As optimization, the bottom of the straw drying device is communicated with the heat exchange pipeline through a pipeline.
As optimization, the straw drying device is a hot air drying box.
As optimization, the straw feeding and conveying device is a straw feeding platform; the straw feeding platform is flush with the feed inlet of the straw cutting device.
Compared with the prior art, the invention has the beneficial effects that: the whole combustion device adopts a complete set of combustion device from preheating-conveying-section cutting-combustion process flow, is suitable for being used in a village and town range, and solves the problem of large-volume straw conveying. The straw is preheated by utilizing the backflow of the waste heat of the burnt flue gas, the straw humidity is reduced, the straw combustion efficiency is improved, and the combustion efficiency is improved by more than 50% compared with the combustion efficiency without preheating. The whole combustion device is totally enclosed, dust generated after straw combustion is absorbed by the cloth bag dust collector, the smoke content in combustion tail gas is effectively reduced, the smoke content in the combustion tail gas can be reduced by more than 95%, and the combustion dust can be collected and used as fertilizer. The device adopts automatic control from the section cutting to the straw conveying and entering the combustion furnace, so that the labor is reduced, and the conveying efficiency is improved.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of the structural arrangement of the straw feeding platform as the primary feeding and conveying mode in the invention.
FIG. 2 is a schematic diagram of the structural arrangement of the straw belt conveyor as the primary feeding conveying mode in the invention.
FIG. 3 is a flow chart of combustion after feeding material is conveyed by a straw belt conveyor.
FIG. 4 is a flow chart of combustion after being fed by the straw feeding platform.
The labels in the figure are: the device comprises a straw cutting device 1, a combustion furnace 2, a heat exchange pipeline 3, a cloth bag dust removal device 4, an air chamber 5, a slag storage chamber 6, an induced draft fan 7, an ash storage chamber 8, an ash outlet door 9, a bucket elevator 10, a straw drying device 11, a straw feeding port 12, a straw belt conveyor 13 and a straw feeding platform 14.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Embodiment 1, the invention is a straw combustion device, comprising a straw feeding and conveying device, a straw cutting device 1, a combustion hearth 2, a heat exchange pipeline 3 and a cloth bag dust removal device 4 which are connected in sequence; the bottom of the combustion hearth 2 is provided with an air chamber 5 and a slag storage chamber 6, and the top is provided with an induced draft fan 7; the bottom of the cloth bag dust removing device 4 is provided with a conical ash storage chamber 8; the bottom of the ash storage chamber 8 is provided with an ash outlet door 9.
The straw cutting device 1 is connected with a straw drying device 11 through a bucket elevator 10; the straw drying device 11 is connected with the combustion furnace 2. The bottom of the straw drying device 11 is communicated with the heat exchange pipeline 3 through a pipeline. The straw drying device 11 is a hot air drying box. The straw feeding and conveying device 1 is a straw feeding platform 14; the straw feeding platform 14 is flush with the feed inlet of the straw cutting device 1.
As shown in fig. 1 and 4, the straw combustion device flow 1: after being transported to the straw feeding platform 14, the raw material straws are sent to the straw cutting device 1, and long straws are cut into small sections, so that the combustion efficiency is improved; then the straw enters a straw drying device 11 after being lifted by a bucket elevator 10, and the primary drying of the straw is carried out by utilizing the backflow of the waste heat of the flue gas in the combustion hearth 2, so as to reduce the moisture of the straw; the primarily dried straws are conveyed into a combustion hearth 2, a blower in an air chamber 5 is used for blasting and burning, and the burnt flue gas enters a straw drying device 11 through a flue of a heat exchange pipeline 3 to preheat the straws again; the dust is collected by the cloth bag dust collector 4, and the waste residue after combustion and the dust after cloth bag dust collection are mixed to be used as fertilizer and can be discharged through a dust outlet door at the lower part of the dust storage chamber 8; and an induced draft fan 7 is used for inducing air, so that the combustion of the combustion hearth is promoted. The straw drying device 11 in this embodiment may be a stepped blanking funnel drying device with hot air introduced to the bottom.
Example 2, as shown in fig. 2 and 3, the whole straw feeding and conveying device is arranged in the straw drying device 11 in a closed manner, and the straw drying device 11 is provided with a straw feeding hole 12; the straw feeding and conveying device is a straw belt conveyor 13. The bottom of the straw drying device 11 is communicated with the heat exchange pipeline 3 through a pipeline. The straw drying device 11 is a hot air drying box.
Straw combustion apparatus flow 2: conveying raw material straws to a straw feeding hole 12, then feeding the straws into a straw drying device 11 provided with a straw belt conveyor 13, and performing primary drying on the straws by using the backflow of flue gas waste heat in a combustion hearth 2 to reduce the moisture of the straws; the straw enters the straw cutting device 1 through the straw belt conveyor 13, long straws are cut into small sections, and the combustion efficiency is improved; then conveying the cut straws into a combustion furnace 2, a blower in an air chamber 5, blasting and combusting, feeding the combusted flue gas into a straw drying device 11 through a flue of a heat exchange pipeline 3, and preheating the straws again; the dust is collected by the cloth bag dust collector 4, and the waste residue after combustion and the dust after cloth bag dust collection are mixed to be used as fertilizer and can be discharged through a dust outlet door at the lower part of the dust storage chamber 8; and an induced draft fan 7 is used for inducing air, so that the combustion of the combustion hearth is promoted.
The whole combustion device adopts a complete set of combustion device from preheating-conveying-section cutting-combustion process flow, is suitable for being used in a village and town range, and solves the problem of large-volume straw conveying. The straw is preheated by utilizing the backflow of the waste heat of the burnt flue gas, the straw humidity is reduced, the straw combustion efficiency is improved, and the combustion efficiency is improved by more than 50% compared with the combustion efficiency without preheating. The whole combustion device is totally enclosed, dust generated after straw combustion is absorbed by the cloth bag dust collector, the smoke content in combustion tail gas is effectively reduced, the smoke content in the combustion tail gas can be reduced by more than 95%, and the combustion dust can be collected and used as fertilizer. The device adopts automatic control from the section cutting to the straw conveying and entering the combustion furnace, so that the labor is reduced, and the conveying efficiency is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. Straw combustion apparatus, its characterized in that: comprises a straw feeding and conveying device, a straw cutting device (1), a combustion hearth (2), a heat exchange pipeline (3) and a cloth bag dust removing device (4) which are connected in sequence; an air chamber (5) and a slag storage chamber (6) are arranged at the bottom of the combustion hearth (2), and an induced draft fan (7) is arranged at the top of the combustion hearth; a conical ash storage chamber (8) is arranged at the bottom of the cloth bag dust removing device (4); the bottom of the ash storage chamber (8) is provided with an ash outlet door (9).
2. The straw combustion device according to claim 1, wherein: the rear part of the straw cutting device (1) is connected with a straw drying device (11) through a bucket elevator (10); the straw drying device (11) is connected with the combustion furnace (2).
3. The straw combustion device according to claim 1, wherein: the straw feeding and conveying device is integrally and hermetically arranged in the straw drying device (11), and a straw feeding hole (12) is formed in the straw drying device (11); the straw feeding and conveying device is a straw belt conveyor (13).
4. The straw combustion device according to claim 2 or 3, wherein: the bottom of the straw drying device (11) is communicated with the heat exchange pipeline (3) through a pipeline.
5. The straw combustion device according to claim 4, wherein: the straw drying device (11) is a hot air drying box.
6. The straw combustion device according to claim 2, wherein: the straw feeding and conveying device is a straw feeding platform (14); the straw feeding platform (14) is flush with the feed inlet of the straw cutting device (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922032347.5U CN211176819U (en) | 2019-11-22 | 2019-11-22 | Straw combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922032347.5U CN211176819U (en) | 2019-11-22 | 2019-11-22 | Straw combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211176819U true CN211176819U (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922032347.5U Active CN211176819U (en) | 2019-11-22 | 2019-11-22 | Straw combustion device |
Country Status (1)
| Country | Link |
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| CN (1) | CN211176819U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110736099B (en) * | 2019-11-22 | 2024-11-26 | 四川轻化工大学 | Straw burning device |
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2019
- 2019-11-22 CN CN201922032347.5U patent/CN211176819U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110736099B (en) * | 2019-11-22 | 2024-11-26 | 四川轻化工大学 | Straw burning device |
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