CN111059876A - Roller-vibration mixed flow combined drying system and process - Google Patents
Roller-vibration mixed flow combined drying system and process Download PDFInfo
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- CN111059876A CN111059876A CN201911348179.9A CN201911348179A CN111059876A CN 111059876 A CN111059876 A CN 111059876A CN 201911348179 A CN201911348179 A CN 201911348179A CN 111059876 A CN111059876 A CN 111059876A
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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
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
- F26B11/0463—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall
- F26B11/0477—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for mixing, stirring or conveying the materials to be dried, e.g. mounted to the wall, rotating with the drum
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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
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- F26B21/40—
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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
- F26B25/001—Handling, e.g. loading or unloading arrangements
-
- 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
- F26B25/005—Treatment of dryer exhaust gases
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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
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/16—Chambers, containers, receptacles of simple construction mainly closed, e.g. drum
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
本发明公开了一种滚筒‑振动混流联合干燥系统及工艺，该系统包括燃烧炉、滚筒干燥装置、振动混流装置和载气系统；物料分别进入滚筒干燥装置与振动混流装置的干燥室，燃烧炉加热载气，并通入滚筒干燥装置，物料在滚筒干燥装置中充分干燥后从产品出口一流出，尾气从尾气出口一排出后，经载气管通入振动混流装置的热载筒，再通过热载筒上的导气孔进入干燥室中，物料在干燥室中充分干燥后从产品出口二流出或者送入滚筒干燥装置，尾气从尾气出口二排放；当振动混流装置中的热载气不足时，由燃烧炉补充热载气。本发明利用滚筒干燥装置排出的高温尾气作为振动混流装置的热源，振动混流干燥所得产品可作为中间产品，也可作为滚筒干燥的产量补充。
The invention discloses a drum-vibration mixed-flow combined drying system and a process. The system includes a combustion furnace, a drum drying device, a vibration-mixed-flow device and a carrier gas system; The carrier gas is heated and passed into the drum drying device. After the material is fully dried in the drum drying device, it flows out from the product outlet. After the exhaust gas is discharged from the exhaust gas outlet, it is passed through the carrier gas pipe into the hot carrier cylinder of the vibrating mixed-flow device, and then passes through the heat. The air guide holes on the carrier cylinder enter into the drying chamber. After the material is fully dried in the drying chamber, it flows out from the product outlet 2 or is sent to the drum drying device, and the exhaust gas is discharged from the exhaust gas outlet 2; when the hot carrier gas in the vibrating mixed flow device is insufficient, The hot carrier gas is supplemented by the combustion furnace. The present invention utilizes the high-temperature exhaust gas discharged from the drum drying device as the heat source of the vibrating mixed-flow device, and the product obtained by the vibrating mixed-flow drying can be used as an intermediate product or as an output supplement of the drum drying.
Description
Technical Field
The invention relates to the field of material drying, in particular to a roller-vibration mixed flow combined drying system and a process.
Background
The function of the drying machine in the prior art is single, most of the existing drying devices are separately carried out, in the aspect of drying the coal slime by the roller, the material is easy to adhere to the inner wall of the roller, so that material powder is solidified, the heat transfer efficiency is reduced along with the time lapse, the theoretical tail gas temperature is less than 100 ℃, the actual carrier gas temperature is up to 180 ℃, and the heat discharge can cause huge energy waste.
Disclosure of Invention
One of the purposes of the invention is to provide a roller-vibration mixed flow combined drying system.
The invention also aims to provide a process for carrying out roller-vibration mixed flow combined drying based on the system, which has high drying efficiency and saves energy.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a drum-vibration mixed flow combined drying system comprises a combustion furnace, a drum drying device, a vibration mixed flow device and a carrier gas system,
the left side of the roller drying device is provided with a first hot carrier gas inlet, the upper part of the left side of the roller drying device is provided with a first material inlet, the upper part of the right side of the roller drying device is provided with a first tail gas outlet, the lower part of the right side of the roller drying device is provided with a first product outlet,
the vibration flow mixing device comprises a drying chamber and a heat carrier, the heat carrier is positioned in the drying chamber, the heat carrier is hollow and cylindrical, a plurality of air guide holes are formed in the body of the heat carrier, a material inlet II is formed in the upper portion of the left side of the drying chamber, a product outlet II is formed in the lower portion of the right side of the drying chamber, a heat carrier gas inlet II is formed in the left side of the drying chamber, a tail gas outlet II is formed in the right side of the drying chamber, the heat carrier gas inlet II and the tail gas outlet II are respectively communicated with the heat carrier,
the carrier system comprises a carrier gas cylinder and a carrier gas pipe, the carrier gas cylinder is connected with a carrier gas inlet of the combustion furnace, one path of a carrier gas outlet of the combustion furnace is connected with the first hot carrier gas inlet through the carrier gas pipe, the other path of the carrier gas outlet of the combustion furnace is connected with the second hot carrier gas inlet, the first tail gas outlet is connected with the second hot carrier gas inlet through the carrier gas pipe, and the second product outlet is connected with the first material inlet.
As a further preferable mode, a plurality of layers of filter membranes are arranged at the second tail gas outlet, and the pore diameter of each filter membrane is smaller than the particle size of the material.
The invention also provides a process for carrying out roller-vibration mixed flow combined drying based on the system, which comprises the following specific steps:
the material enters the drying chamber of the vibration mixed flow device from the first material inlet and the second material inlet respectively, carrier gas is introduced into the combustion furnace for heating, hot carrier gas is introduced into the drying chamber of the vibration mixed flow device from the first heat carrier inlet through a carrier gas pipe, the material flows out from the first product outlet after being fully dried in the drying chamber, generated tail gas is discharged from the first tail gas outlet, then enters the heat carrier of the vibration mixed flow device from the second heat carrier inlet through the carrier gas pipe, and then enters the drying chamber through a gas guide hole in the heat carrier, the material flows out from the second product outlet after being fully dried in the drying chamber or is conveyed into the drying chamber of the roller from the first material inlet through a conveying pipe, and generated tail gas is discharged from the second tail gas outlet; when the hot carrier gas in the vibrating flow mixing device is insufficient, the combustion furnace supplements the hot carrier gas from the carrier gas inlet II through the carrier gas pipe.
In a further preferred embodiment, the carrier gas is nitrogen or air.
In a further preferable mode, the temperature of the tail gas discharged from the second tail gas outlet is less than or equal to 50 ℃.
Compared with the prior art, the invention has the following beneficial effects:
1. in the drum-vibration mixed flow combined drying system provided by the invention, the drum drying device and the vibration mixed flow device can be independently used for drying materials to produce qualified products, and the vibration mixed flow device can also be used as pretreatment equipment at a material inlet of the drum drying device.
2. The invention provides a roller-vibration mixed flow combined drying process, which recovers tail gas energy of a roller drying device for vibration mixed flow drying, and a product obtained by the vibration mixed flow drying can be used as an intermediate product and also can be used as yield supplement of the roller drying. The problem of among the prior art cylinder dry, the material glues the wall, leads to heat transfer efficiency to reduce to make carrier gas high temperature, the waste heat that leads to is wasted is solved.
Drawings
FIG. 1 is a schematic structural diagram of a drum-vibration mixed flow combined drying system of the present invention;
in the figure, 1-combustion furnace, 2-roller drying device, 21-material inlet I, 22-tail gas outlet I, 23-product outlet I, 24-hot carrier gas inlet I, 3-vibration flow mixing device, 31-drying chamber, 32-hot carrier cylinder, 321-air guide hole, 33-material inlet II, 34-product outlet II, 35-carrier gas inlet II, 36-tail gas outlet II and 4-carrier gas pipe.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which together with the examples of the invention serve to explain the principles of the invention and not to limit its scope.
As shown in figure 1, a roller-vibration mixed flow combined drying system comprises a combustion furnace 1, a roller drying device 2, a vibration mixed flow device 3 and a carrier gas system,
the roller drying device 2 and the vibration flow mixing device 3 are main places for drying materials, a first hot carrier gas inlet 24 is arranged on the left side of the roller drying device 2, a first material inlet 21 is arranged above the left side of the roller drying device 2, a first tail gas outlet 22 is arranged above the right side of the roller drying device 2, a first product outlet 23 is arranged below the right side of the roller drying device 2, the vibration flow mixing device 3 comprises a drying chamber 31 and a hot carrier 32, the hot carrier 32 is located inside the drying chamber 31, the hot carrier 32 is hollow cylindrical, a plurality of air guide holes 321 are formed in the body of the hot carrier 32, a second material inlet 33 is arranged above the left side of the drying chamber 31, a second product outlet 34 is arranged below the right side of the drying chamber 31, a second hot carrier gas inlet 35 is arranged on the left side of the drying chamber 31, a second tail gas outlet 36 is arranged on the right side of the drying chamber 31, the second hot carrier gas inlet 35 and the second tail gas outlet 36 are respectively communicated with the hot,
the combustion furnace 1 is used for generating hot carrier gas required by drying, and the temperature of the hot carrier gas can be adjusted according to material properties, such as 180-.
The carrier system comprises a carrier gas cylinder and a carrier gas pipe 4, the carrier gas cylinder is connected with a carrier gas inlet of the combustion furnace 1, one path of a carrier gas outlet of the combustion furnace 1 is connected with the first hot carrier gas inlet 24 through the carrier gas pipe 4, the other path of the carrier gas outlet is connected with the second hot carrier gas inlet 35, the first tail gas outlet 22 is connected with the second hot carrier gas inlet 35 through the carrier gas pipe 4, and the second product outlet 34 is connected with the first material inlet 21.
In order to avoid the dried tail gas from taking away the powder after the material crushing to cause dust pollution, the second tail gas outlet 36 of the vibration flow mixing device is provided with a plurality of layers of filter membranes, and the aperture of each filter membrane is far smaller than the particle size of the powder of the material. The small part of material powder can be brought to the tail gas outlet by the hot carrier gas along with the flow of the hot carrier gas, and at the moment, the aperture of the multilayer filter membrane arranged at the second 36 tail gas outlet of the vibration flow mixing device is far smaller than the particle size of the material powder, so that the material powder is blocked in the drying chamber, and the dust pollution caused by the material powder is avoided.
Taking a dry material coal slurry as an example, the coal slurry respectively enters the drum drying device 2 from a material inlet I21 and enters the drying chamber 31 of the vibration mixed flow device 3 from a material inlet II 33, carrier gas is introduced into the combustion furnace 1 for heating, the carrier gas is nitrogen or air, the temperature of the hot carrier gas is 180 ℃, the hot carrier gas is introduced into the drum drying device 2 from a heat carrier inlet I24 through a carrier gas pipe 4, the material is fully dried in the drum drying device 2 and then flows out from a product outlet I23, generated tail gas is discharged from a tail gas outlet I22, the temperature of the tail gas is higher than 100 ℃, then the material is introduced into a heat carrier 32 of the vibration mixed flow device 3 from a heat carrier inlet II 35 through the carrier gas pipe 4 and then enters the drying chamber 31 through a gas guide hole 321 on the heat carrier 32, the material is fully dried in the drying chamber 31 and then flows out from a product outlet II 34 or is conveyed into the drum drying device 2 from the, the product produced by the vibration flow mixing device can be used as the output supplement of the roller product and also can be used as the pretreatment product introduced into the roller drying device 2, the generated tail gas is discharged from a tail gas outlet II 36, and the temperature of the tail gas is less than or equal to 50 ℃; when the hot carrier gas in the vibrating flow mixing device 3 is insufficient, the combustion furnace 1 supplements the hot carrier gas from the carrier gas inlet II 35 through the carrier gas pipe 4.
In conclusion, the drum-vibration mixed flow combined drying process provided by the invention recovers tail gas energy of the drum drying device for vibration mixed flow drying, and a product obtained by the vibration mixed flow drying can be used as an intermediate product and also can be used as output supplement of the drum drying. The problem of among the prior art cylinder dry, the material glues the wall, leads to heat transfer efficiency to reduce to make carrier gas high temperature, the waste heat that leads to is wasted is solved.
In addition, the process can finish the drying process of the material with high timeliness, the hot carrier gas led out from the bottom of the hot carrier cylinder can fully contact the surface of the material, the moisture in the material is absorbed, the moisture is timely discharged out of the vibration chamber, and the raw material cannot be polluted.
Claims (5)
1. A roller-vibration mixed flow combined drying system is characterized by comprising a combustion furnace (1), a roller drying device (2), a vibration mixed flow device (3) and a carrier gas system,
a first hot carrier gas inlet (24) is arranged on the left side of the roller drying device (2), a first material inlet (21) is arranged above the left side of the roller drying device (2), a first tail gas outlet (22) is arranged above the right side of the roller drying device (2), a first product outlet (23) is arranged below the right side of the roller drying device (2),
the vibration flow mixing device (3) comprises a drying chamber (31) and a heat carrier cylinder (32), the heat carrier cylinder (32) is located inside the drying chamber (31), the heat carrier cylinder (32) is in a hollow cylindrical shape, a plurality of air guide holes (321) are formed in the cylinder body of the heat carrier cylinder (32), a material inlet II (33) is formed in the upper portion of the left side of the drying chamber (31), a product outlet II (34) is formed in the lower portion of the right side of the drying chamber (31), a heat carrier gas inlet II (35) is formed in the left side of the drying chamber (31), a tail gas outlet II (36) is formed in the right side of the drying chamber (31), the heat carrier gas inlet II (35) and the tail gas outlet II (36) are respectively communicated with the heat carrier cylinder (32),
the carrier system comprises a carrier gas bottle and a carrier gas pipe (4), the carrier gas bottle is connected with a carrier gas inlet of the combustion furnace (1), one path of a carrier gas outlet of the combustion furnace (1) is connected with the first hot carrier gas inlet (24) through the carrier gas pipe (4), the other path of the carrier gas outlet is connected with the second hot carrier gas inlet (35), the first tail gas outlet (22) is connected with the second hot carrier gas inlet (35) through the carrier gas pipe (4), and the second product outlet (34) is connected with the first material inlet (21).
2. The combined drum-vibration mixed flow drying system as claimed in claim 1, wherein a plurality of layers of filter membranes are arranged at the second exhaust outlet (36), and the pore size of the filter membranes is smaller than the particle size of the material.
3. A drying process based on the combined drying system of the roller-vibration mixed flow device as claimed in claim 1 or 2, is characterized by comprising the following specific steps:
materials respectively enter the roller drying device 2 from a material inlet I (21) and enter a drying chamber (31) of the vibration mixed flow device (3) from a material inlet II (33), carrier gas is introduced into the combustion furnace (1) for heating, hot carrier gas is introduced into the roller drying device (2) from a heat carrier inlet I (24) through a carrier gas pipe (4), the materials are fully dried in the roller drying device (2) and then flow out from a product outlet I (23), generated tail gas is discharged from a tail gas outlet I (22), then the generated tail gas is introduced into a heat carrier cylinder (32) of the vibration mixed flow device (3) from a heat carrier inlet II (35) through the carrier gas pipe (4), and then enters the drying chamber (31) through a gas guide hole (321) on the heat carrier cylinder (32), the materials are fully dried in the drying chamber (31) and then flow out from the product outlet II (34) or are conveyed into the roller drying device (2) from the material inlet I (21) through a conveying pipe, the generated tail gas is discharged from a tail gas outlet II (36); when the hot carrier gas in the vibration flow mixing device (3) is insufficient, the combustion furnace (1) supplements the hot carrier gas from the carrier gas inlet II (35) through the carrier gas pipe (4).
4. The drying process of claim 3, wherein the carrier gas is nitrogen or air.
5. The drying process according to claim 3, wherein the temperature of the tail gas discharged from the tail gas outlet two (36) is less than or equal to 50 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911348179.9A CN111059876A (en) | 2019-12-24 | 2019-12-24 | Roller-vibration mixed flow combined drying system and process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911348179.9A CN111059876A (en) | 2019-12-24 | 2019-12-24 | Roller-vibration mixed flow combined drying system and process |
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| CN201911348179.9A Pending CN111059876A (en) | 2019-12-24 | 2019-12-24 | Roller-vibration mixed flow combined drying system and process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115584273A (en) * | 2022-10-25 | 2023-01-10 | 国能(山东)能源环境有限公司 | Biomass pyrolysis treatment system |
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Application publication date: 20200424 |