CN105588410B - Hot air drying device - Google Patents
Hot air drying device Download PDFInfo
- Publication number
- CN105588410B CN105588410B CN201610120308.9A CN201610120308A CN105588410B CN 105588410 B CN105588410 B CN 105588410B CN 201610120308 A CN201610120308 A CN 201610120308A CN 105588410 B CN105588410 B CN 105588410B
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- air
- hollow shaft
- shaft body
- rear end
- auger
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/12—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices
- F26B11/14—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices the stirring device moving in a horizontal or slightly-inclined plane
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/02—Biomass, e.g. waste vegetative matter, straw
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/04—Garbage
Abstract
A hot air drying device relates to pretreatment equipment of biomass fuel in earlier stage, which comprises a rotating shaft, a spiral stirring plate and a shell, wherein a stirring auger (4) consists of the rotating shaft and the spiral stirring plate, a hollow shaft body (4-3) is arranged on the rotating shaft, and the spiral stirring plate (4-2) is spirally surrounded on the outer side of the wall body of the hollow shaft body (4-3); the casing (3) is the cylinder structure that link up from beginning to end, and the cylinder inner space of casing (3) constitutes air-dry tunnel (3-2), has front end (12) at the front end of casing (3), has rear end (5) at the rear end of casing (3), and screw feeder (4) set up in air-dry tunnel (3-2), have on rear end (5) and supply tuber pipe (7) to insert, and air intake that supplies tuber pipe (7) through screw feeder (4) pivot rear end communicates the inner space of hollow shaft body (4-3). The invention is applied to the pre-pretreatment process of the gasification system of the agricultural and forestry waste or the household garbage, hot air is dispersed from the center and is easier to permeate into the material, thereby being beneficial to the full contact of the material and the hot air and leading the material to be easier to be dried.
Description
Technical Field
The invention relates to an early pretreatment device of biomass fuel, in particular to a drying device of biomass fuel.
Background
Biomass fuels include household waste, agricultural waste, forestry waste, wood processing residues, aquatic plants, and energy plants. China has abundant biomass resources, but can not be effectively utilized, a large amount of straws are burnt in a burn-in mode every year, resources are wasted, the ecological environment is destroyed, and haze is caused by large-area burn-in. The domestic garbage is rapidly increased along with the development of national economy and the continuous expansion of urban scale, currently, domestic garbage treatment in China mainly adopts a landfill method and an incineration method, and the landfill method not only occupies a large amount of land and wastes resources, but also easily pollutes the land and underground water; the municipal solid waste is treated by adopting an incineration method, the municipal solid waste is used as fuel, the reduction and resource treatment of the municipal solid waste can be realized, but the waste incineration needs to discharge flue gas to pollute the environment, and the flue gas containing carcinogenic hypertoxic dioxin can be accumulated in the environment to threaten the health of people.
When the agriculture and forestry waste or the domestic garbage is treated by the gasification-liquefaction technology and is converted into clean secondary energy, the dual beneficial effects can be achieved, the problem of environmental pollution can be solved, and the dependence on petroleum and coal resources can be reduced. But the agricultural and forestry waste or the domestic garbage has high water content and low heat value, so that the treatment cost is greatly improved. The prior waste incineration power plant carries out the pre-treatment of the waste fuel, the waste is stored in a storage pit for a certain time, the water content of the waste is reduced through the natural compression and fermentation, and the waste fuel treated by the pre-treatment can not be used as the raw material of a gasification furnace.
Disclosure of Invention
The invention aims to provide hot air drying equipment, which effectively dries agricultural and forestry waste or domestic garbage, greatly reduces the water content, improves the heat value, meets the raw material requirement of a gasification furnace, produces high-quality synthesis gas and realizes the pollution-free and energy-saving treatment of the domestic garbage and the agricultural and forestry waste in the true sense.
The invention relates to a hot air drying device, which comprises a rotating shaft, a spiral stirring plate and a shell, and is characterized in that a stirring conveyor 4 consists of the rotating shaft and the spiral stirring plate, a hollow shaft body 4-3 is arranged on the rotating shaft, air distribution holes are arranged at intervals on the wall body of the hollow shaft body 4-3, the spiral stirring plate 4-2 is spirally surrounded on the outer side of the wall body of the hollow shaft body 4-3, and an air inlet is arranged at the rear end of the rotating shaft; the shell 3 is a cylinder structure which is through from front to back, the space in the cylinder of the shell 3 forms an air drying tunnel 3-2, the front part of the air drying tunnel 3-2 is connected with a material conveying opening 3-1, the back part of the air drying tunnel 3-2 is connected with a material outlet 3-4, the front end of the shell 3 is provided with a front end head 12, the center of the front end head 12 is provided with a front bearing 17, the back end of the shell 3 is provided with a back end head 5, and the center of the back end head 5 is provided with a back bearing 6; the auger 4 is arranged in the air drying tunnel 3-2, the rotating shaft of the auger 4 is arranged in the front bearing 17 and the rear bearing 6, the front end of the auger 4 is provided with a transmission joint 4-8 which extends out of the front bearing 17, the rear end 5 is provided with an air supply pipe 7 which is connected, and the air supply pipe 7 is communicated with the inner space of the hollow shaft body 4-3 through the air inlet at the rear end of the rotating shaft of the auger 4.
In the invention, a blast nozzle 4-1 is connected out of a hollow shaft body 4-3 of an auger 4, the blast nozzle 4-1 is in a conical structure with a narrowed outlet, and the blast nozzle 4-1 is communicated with the inner space of the hollow shaft body 4-3 through a wind distribution hole; the spiral stirring plate 4-2 is provided with stirring rods 4-6 which are arranged at intervals, and the stirring rods 4-6 are connected to the spiral stirring plate 4-2 in a welding way; the spiral stirring plate 4-2 is connected to the wall body of the hollow shaft body 4-3 in a welding mode; a bearing cover plate 16 is arranged on the outer side of the front end head 12; a chain wheel 15 is arranged on the transmission joint 4-8 of the screw conveyor 4; an air pulling pipe 18 is arranged above the material conveying port 3-1 at the front part of the air drying tunnel 3-2, the air pulling pipe 18 is also used as a material conveying channel and an exhaust pipe, and a hopper 19 is connected to the air pulling pipe 18.
When the invention is applied to the pre-pretreatment process of the gasification system of agricultural and forestry waste or household garbage, hot air enters the inner space of the hollow shaft body 4-3 from the rear end of the rotating shaft of the auger 4 and then is dispersed into the air drying tunnel 3-2 in the shell 3 through the air distribution holes and the air nozzle 4-1; the driving motor makes the chain wheel 15 rotate in a chain transmission mode, so as to drive the auger 4 to rotate, the material is conveyed from the front end to the rear end by the rotating auger 4, in the conveying process, the spiral agitating plate 4-2 agitates the material to loosen the material, the material is in full contact with hot air, moisture is dried, and then the moisture is taken away by the hot air, so that the material is dried more easily. The hot air is generated by the waste heat of the system or by utilizing solar energy. After being dried, the agricultural and forestry wastes or the household garbage are sent into a gasification furnace to be converted into synthesis gas through gasification reaction, and the synthesis gas is used as clean fuel or chemical raw materials.
In the invention, the air distribution holes are distributed on the pipe wall of the hollow shaft body 4-3 of the screw conveyor 4, so that hot air is distributed into the air drying tunnel 3-2 through the air nozzle 4-1 on the hollow shaft body 4-3, the hot air is dispersed from the center, under the matching condition of the spiral stirring plate 4-2, the loose hot air of the material is easier to permeate into the material, and the material is stirred, so that dead corners are not generated, and the drying efficiency is high; the air nozzle 4-1 is arranged on the hollow shaft body 4-3 of the auger 4, so that the air nozzle 4-1 is communicated with the inner space of the hollow shaft body 4-3 through the air distribution hole to prevent garbage materials from blocking the air distribution hole, the air nozzle 4-1 is higher than the pipe wall of the hollow shaft body 4-3, the air nozzle 4-1 is of a conical structure with a narrowed outlet, the caliber of the outlet is smaller than the diameter of an air channel in the air nozzle 4-1, and sundries cannot be remained at the outlet of the air nozzle 4-1, so that the narrowed outlet conical structure of the air nozzle 4-1 has the characteristic of difficult blockage; the stirring rods 4-6 are arranged on the spiral stirring plate 4-2 at intervals, so that the material loosening effect is better.
The invention has the beneficial effects that: the method is applied to the pre-pretreatment process of the gasification system of the agricultural and forestry waste or the household garbage, the agricultural and forestry waste or the household garbage is dried in a hot air drying device in a stirring mode by using an auger, so that hot air is dispersed from the center, the hot air is easier to permeate into the material, the material is favorably in full contact with the hot air, and the material is easier to be dried. After the agricultural and forestry wastes or the household garbage are dried, the calorific value is improved, the dried agricultural and forestry wastes or the household garbage are used as raw materials of a gasification furnace to produce synthesis gas, and the synthesis gas is used as clean fuel or chemical raw materials, so that the agricultural and forestry wastes or the household garbage can be treated in a harmless and energy manner in the real sense.
Drawings
Fig. 1 is a structural view of a hot air drying apparatus according to the present invention.
Fig. 2 is a partial configuration diagram of the hot air drying device of the present invention.
In the figure: 1. the method comprises the following steps of (1) preparing materials, (2) leading-out gas, (3) a shell, (3-1) a material conveying port, (3-2) an air drying tunnel, (3-3) a rear mounting flange, (3-4) a material outlet, (3-5) a front mounting flange, (4) a screw feeder, (4-1) an air nozzle, (4-2) a spiral stirring plate, (4-3) a hollow shaft body, (4-4) a rear shaft head, (4-5) an air chamber, (4-6) a stirring rod, (4-7) a front shaft head, (4-8) a transmission joint, (5) a rear end head, (6) a rear bearing, (7) an air supply pipe, (7-1) a connecting flange, (8) hot air, (9) a rear mounting bolt, (10) a rear fastening bolt, (11) hot air, (12) a front end head, (13) a front fastening bolt, (14) a front mounting bolt, (15) a chain wheel, (16) a bearing cover plate, (17) a front bearing and (18) an air pulling pipe, 18-1 parts of a draft channel, 19 parts of a hopper and 19-1 parts of a feed inlet.
Detailed Description
Example 1 in the embodiment shown in fig. 1 and 2, the hot air drying device comprises an auger 4, a housing 3 and an air-drawing pipe 18, wherein the auger 4 comprises a rotating shaft and a spiral stirring plate, the rotating shaft is provided with a transmission joint 4-8, a front spindle head 4-7, a hollow spindle body 4-3 and a rear spindle head 4-4 in sequence from front to back, the spiral stirring plate 4-2 is spirally surrounded on the outer side of the wall body of the hollow spindle body 4-3, the spiral stirring plate 4-2 is connected on the wall body of the hollow spindle body 4-3 in a welding manner, stirring rods 4-6 are arranged on the spiral stirring plate 4-2 at intervals, the stirring rods 4-6 are connected on the spiral stirring plate 4-2 in a welding manner, the inner space of the hollow spindle body 4-3 forms an air chamber 4-5, an air inlet of the air chamber 4-5 is formed by an axial through opening at the center of the rear spindle head 4-4, the wall body of the hollow shaft body 4-3 is provided with air distribution holes which are uniformly distributed, the air distribution holes are arranged at the staggered positions of the spiral stirring plate 4-2, an air nozzle 4-1 is connected out of the hollow shaft body 4-3 of the screw conveyor 4, the air nozzle 4-1 is of a conical structure with a narrowed outlet, and the air nozzle 4-1 is communicated with the inner space of the hollow shaft body 4-3 through the air distribution holes; the shell 3 is a cylinder structure which is through from front to back, the space in the cylinder of the shell 3 forms an air drying tunnel 3-2, the front part of the air drying tunnel 3-2 is provided with a material conveying opening 3-1 for access, the rear part of the air drying tunnel 3-2 is provided with a material outlet 3-4 for access, the front end of the shell 3 is provided with a front end head 12, the center of the front end head 12 is provided with a front bearing 17, the outer side of the front end head 12 is provided with a bearing cover plate 16, the rear end of the shell 3 is provided with a rear end head 5, and the center of the rear end head 5 is; a hollow shaft body 4-3 of the auger 4 is provided with a spiral agitating plate 4-2 in the air drying tunnel 3-2, a front shaft head 4-7 of the auger 4 is positioned on a front bearing 17 in a front end head 12, a transmission joint 4-8 of the auger 4 extends out of the front bearing 17, a chain wheel 15 is arranged on the transmission joint 4-8 of the auger 4, a rear shaft head 4-4 of the auger 4 is positioned on a rear bearing 6 in a rear end head 5, an air supply pipe 7 is connected to the rear end head 5, and the air supply pipe 7 is communicated to an air chamber 4-5 through an axial through hole in the center of the rear shaft head 4-4 of the auger 4; an air pulling pipe 18 is arranged above the material conveying port 3-1 at the front part of the air drying tunnel 3-2, the air pulling pipe 18 is also used as a material conveying channel and an exhaust pipe, and a hopper 19 is connected to the air pulling pipe 18.
When the device is used, hot air enters the inner space of the hollow shaft body 4-3 from the rear end of the rotating shaft of the auger 4 and then is dispersed into the air drying tunnel 3-2 in the shell 3 through the air distribution holes and the air nozzles 4-1; the driving motor makes the chain wheel 15 rotate in a chain transmission mode, so as to drive the auger 4 to rotate, the material is conveyed from the front end to the rear end by the rotating auger 4, the material is stirred by the spiral agitating plate 4-2 in the conveying process, so that the material is loose, the material is fully contacted with hot air, moisture is dried, and the material is dried. The hot air containing water is led out through the air drawing pipe 18 and is discharged into the atmosphere after dehydration, deodorization and sterilization. After being dried, the agricultural and forestry wastes or the household garbage are sent into a gasification furnace to be converted into synthesis gas through gasification reaction, and the synthesis gas is used as clean fuel or chemical raw materials. In this embodiment, the hot wind is generated by waste heat of the gasification system in the production process or by using solar energy.
Claims (4)
1. A hot air drying device comprises a rotating shaft, a spiral stirring plate and a shell, and is characterized in that an auger (4) is composed of the rotating shaft and the spiral stirring plate, a hollow shaft body (4-3) is arranged on the rotating shaft, air distribution holes are formed in the wall body of the hollow shaft body (4-3) at intervals, an air nozzle (4-1) is arranged on the hollow shaft body (4-3) of the auger (4), the air nozzle (4-1) is communicated with the inner space of the hollow shaft body (4-3) through the air distribution holes, the air nozzle (4-1) is higher than the pipe wall of the hollow shaft body (4-3), the air nozzle (4-1) is of a conical structure with a narrowed outlet, and the caliber of the outlet is smaller than the diameter of an air duct in the air nozzle (4-1); the spiral stirring plate (4-2) is spirally wound on the outer side of the wall body of the hollow shaft body (4-3), stirring rods (4-6) are arranged on the spiral stirring plate (4-2) at intervals, the stirring rods (4-6) are connected to the spiral stirring plate (4-2) in a welding mode, and an air inlet is formed in the rear end of the rotating shaft; the shell (3) is of a front-back through cylinder structure, an air drying tunnel (3-2) is formed in the cylinder inner space of the shell (3), a material conveying port (3-1) is connected to the front part of the air drying tunnel (3-2), an air pulling pipe (18) is arranged above the material conveying port (3-1) at the front part of the air drying tunnel (3-2), the air pulling pipe (18) is used as a material conveying channel and an exhaust pipe, a hopper (19) is connected to the air pulling pipe (18), a material discharging port (3-4) is connected to the rear part of the air drying tunnel (3-2), a front end head (12) is arranged at the front end of the shell (3), a front bearing (17) is arranged in the center of the front end head (12), a rear end head (5) is arranged at the rear end of the shell (3), and a rear bearing (6) is arranged in the center of the rear end head (5); the auger (4) is arranged in the air drying tunnel (3-2), a rotating shaft of the auger (4) is arranged in the front bearing (17) and the rear bearing (6), a transmission joint (4-8) is arranged at the front end of the auger (4) and extends out of the front bearing (17), an air supply pipe (7) is connected to the rear end head (5), and the air supply pipe (7) is communicated to the inner space of the hollow shaft body (4-3) through an air inlet at the rear end of the rotating shaft of the auger (4).
2. A hot-air drying unit, as in claim 1, characterized in that the spiral flight (4-2) is attached to the wall of the hollow shaft body (4-3) by welding.
3. A hot air drying device according to claim 1, characterized in that a bearing cover plate (16) is provided on the outside of the front end head (12).
4. A hot-air drying unit, according to claim 1, characterized in that the drive connection (4-8) of the screw conveyor (4) is provided with a chain wheel (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610120308.9A CN105588410B (en) | 2016-03-04 | 2016-03-04 | Hot air drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610120308.9A CN105588410B (en) | 2016-03-04 | 2016-03-04 | Hot air drying device |
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| Publication Number | Publication Date |
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| CN105588410A CN105588410A (en) | 2016-05-18 |
| CN105588410B true CN105588410B (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610120308.9A Active CN105588410B (en) | 2016-03-04 | 2016-03-04 | Hot air drying device |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225445B (en) * | 2016-09-14 | 2018-07-20 | 江苏沙家浜医药化工装备股份有限公司 | Elbow type Pneumatic drying device |
| CN107449240A (en) * | 2017-07-21 | 2017-12-08 | 崇州市四方新能源有限公司 | Improve the device of biomass granule fuel drying efficiency |
| CN107245359A (en) * | 2017-07-21 | 2017-10-13 | 崇州市四方新能源有限公司 | Dryer based on sawdust processing biological particles fuel |
| CN107606924A (en) * | 2017-09-25 | 2018-01-19 | 天津科创复兴科技咨询有限公司 | A kind of feed manufacturing drying device of integral type ventilation |
| CN108981154A (en) * | 2018-06-05 | 2018-12-11 | 芜湖秀成机械科技有限公司 | A kind of environmental protection and energy saving biomass thermal wind furnace |
| CN109668403A (en) * | 2018-11-19 | 2019-04-23 | 湖南全望信息科技有限公司 | Grain drying device is used in a kind of experiment of agricultural sciences |
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| US2554769A (en) * | 1948-09-16 | 1951-05-29 | Iowa State College Res Found | Drying equipment |
| JP4539329B2 (en) * | 2004-12-28 | 2010-09-08 | 宣明 出張 | Reduced pressure continuous pyrolysis apparatus and reduced pressure continuous pyrolysis method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2370359Y (en) * | 1999-03-09 | 2000-03-22 | 张鸿飞 | Turbogrid rotary drier |
| CN101050916A (en) * | 2007-04-20 | 2007-10-10 | 张亚宇 | Rake type drier |
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| CN105588410A (en) | 2016-05-18 |
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