CN100445674C - Multistage combined fluidizing-moving bed drier and drying method thereof - Google Patents
Multistage combined fluidizing-moving bed drier and drying method thereof Download PDFInfo
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- CN100445674C CN100445674C CNB2007100104744A CN200710010474A CN100445674C CN 100445674 C CN100445674 C CN 100445674C CN B2007100104744 A CNB2007100104744 A CN B2007100104744A CN 200710010474 A CN200710010474 A CN 200710010474A CN 100445674 C CN100445674 C CN 100445674C
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Abstract
A multistage combined fluidize-movable bed drier is substantially formed by a fluidize-movable drying unit, a fluidize-movable-drying-grading unit, a box, a particle separating room, a wet material inlet, a rough particle outlet, a fine particle outlet and a waste gas outlet. And relative drying method comprises that adding wet material on the screen plate of highest first-stage fluidize-movable-drying-grading unit, to fluidize and dry the fine particles via hot wind, and drying rough particles on the screen plate with moving, along with adding wet material, the material of first-stage unit enters into the second-stage unit to be dried, and enter into next unit to be dried continuously, until the last fluidize-movable-drying-grading unit, to obtain qualified rough particles and fine particles. The invention has the advantages in simple structure, easy production and simple operation, or the like.
Description
Technical field
The invention belongs to drying equipment and process technology field, relate to a kind of multistage combined fluidizing-moving bed drier and dry classification method thereof.
Background technology
As everyone knows, the form of fluidized bed dryer has a variety of.Can be divided into single-layer fluidized bed drier, multi-stage fluidized bed dryer, horizontal multicompartment fluidized bed dryer etc. by its version.The major advantage of fluidized bed dryer is that treating capacity is big, the time of staying of material in fluidized bed dryer can be regulated, uniformity of temperature profile in the bed, but certain requirement is arranged for the material particles size distribution, otherwise, bulky grain can occur and also not be fluidized, and granule has been taken away by air-flow; For multi-stage fluidized bed dryer, its pressure falls bigger.
Summary of the invention
The purpose of this invention is to provide a kind of multistage combined fluidizing-moving bed drier and drying means thereof.Realize wide size distribution granule materials fluidisation or move equably in fluidizing-moving bed drier, operating process is stably carried out.
The present invention is achieved through the following technical solutions.Multistage combined fluidizing-moving bed drier comprises following a few part: fluidisation-mobile drying unit, fluidisation-move-drying-stage unit, casing, fine grained separation chamber, wet stock inlet, coarse granule products export, fine grained products export and waste gas outlet etc.The progression of fluidisation-mobile drying unit is 3～30 grades, and the progression of fluidisation-move-drying-stage unit is 1 grade; Two side plates of fluidisation-mobile drying unit or fluidisation-move-drying-stage unit and the distance between the casing will guarantee that gas is 1～5m/s in the speed of this passage; Distance between two adjacent fluidisation-mobile drying units or fluidisation-move-drying-stage unit is 500～1000mm; The header board and the distance between the casing of fluidisation-mobile drying unit or fluidisation-mobile-drying-stage unit are 300～500mm.Fluidisation-mobile drying unit is welded together and is constituted by gas distribution grid, side weir plate, base plate, header board, auger conveyor and hot-wind inlet and casing, have circular hole road or oblique circular hole road on the gas distribution grid, channel diameter is 1～3mm, percent opening is 2～10%, the angle of inclination of inclined hole is 5～15 °, two blocks of side weir plates should equal the fluidized-bed layer height than the height that gas distribution grid exceeds, the angle of gas distribution grid and horizontal plane is 2～45 °, the angle of base plate and horizontal plane is 40～70 °, and preceding plate height is greater than 200mm; The structural similarity of fluidisation-move-drying-stage unit and fluidisation-mobile-drying unit just becomes classification wind inlet by hot-wind inlet, and header board becomes porous plate (the perforate situation is identical with gas distribution grid).
The method that adopts above-mentioned multistage combined fluidizing-moving bed drier to carry out drying is: wet stock is joined on uppermost first order fluidisation-mobile-drying unit sieve plate of (being called for short first order unit), by hot blast fine grained is carried out fluidized drying, and coarse granule moves the limit drying in the sieve plate top, continuous adding along with wet stock, second level fluidisation-mobile-drying unit (being called for short unit, the second level) that the material of first order unit enters below it carries out drying, enter the next stage unit successively and proceed drying, after entering nethermost afterbody fluidisation-mobile-drying-stage unit, obtain qualified coarse granule and fine grained product.
Effect of the present invention and benefit are that device structure is simple, and easy to manufacture, easy to operate, bed layer pressure is fallen little, save the energy.Realized wide size distribution granule materials fluidisation or move equably in fluidizing-moving bed device, operating process is stably carried out.
Description of drawings
Fig. 1 is the structural representation of multistage combined fluidizing-moving bed drier.
Fig. 2 is that the A of Fig. 1 is to view.
Fig. 3 is that the B of Fig. 1 is to view.
Fig. 4 utilizes multistage combined fluidizing-moving bed drier to carry out the schematic flow sheet of dry and progressive operation.
1. fine grained products exports among the figure; 2. fine grained separation chamber; 3. fine grained separation chamber waste gas outlet; 4. auger conveyor; 5. fluidisation-move-drying unit; 6. hot-wind inlet; 7. gas distribution grid; 8. side weir plate; 9. casing; 10. wet stock enters the mouth; 11. header board; 12. base plate; 13. waste gas outlet; 14. fluidisation-move-drying-stage unit; 15. classification wind inlet; 16. coarse granule products export; 17. air blast; 18. air heater; 19. multistage combined fluidizing-moving bed drier; 20. classification blower fan; 21. cloth envelop collector; 22. air-introduced machine; 23. butterfly valve.
The specific embodiment
Further specify implementation method of the present invention below in conjunction with accompanying drawing.
As Fig. 1, Fig. 2 and shown in Figure 3, fluidisation-mobile drying unit 5 is by gas distribution grid 7, side weir plate 8, base plate 12, header board 11, auger conveyor 4 and hot-wind inlet 6 weld together with casing 9 and constitute, have circular hole road or oblique circular hole road on the gas distribution grid, channel diameter is 1～3mm, percent opening is 2～10%, the angle of inclination of inclined hole is 5～15 °, two blocks of side plates should equal the fluidized-bed layer height than the height that gas distribution grid exceeds, the angle of gas distribution grid and horizontal plane is 2～45 °, the angle of base plate and horizontal plane is 40～70 °, and preceding plate height is greater than 200mm; The structural similarity of fluidisation-move-drying-stage unit 15 and fluidisation-mobile drying unit just becomes hot-wind inlet classification wind inlet 14, and header board becomes porous plate (the perforate situation is identical with gas distribution grid).
As shown in Figure 4, wet stock is entered on the gas distribution grid of the uppermost first order fluidisation of multistage combined fluidizing-moving bed drier-mobile-drying unit 5 by charging aperture 10, the hot blast of sending into air heater 18 through air blast 17 carries out fluidized drying with fine grained, and coarse granule moves the limit drying in the sieve plate top, continuous adding along with wet stock, the unit, the second level that the material of first order unit enters below it carries out drying, drying is proceeded in the third level unit that the material of unit, the second level enters below it again, after entering nethermost afterbody fluidisation-mobile-drying-stage unit 15 and fine grained separation chamber 2, obtain qualified grain products and discharge through coarse granule outlet 16 and fine grained outlet 1, waste gas is drawn by air-introduced machine 22 behind cloth envelop collector 21.The product that cloth envelop collector separates is the fine grained product.The effect of auger conveyor 4 is the granule materials of discharging in the fluidisation of bleeding-mobile-drying unit or fluidisation-mobile-drying-stage unit.Butterfly valve 23 is used for the adjustments of gas flow.
Claims (3)
1. multistage combined fluidizing-moving bed drier, this drier is made up of fluidisation-mobile drying unit, fluidisation-move-drying-stage unit, casing, fine grained separation chamber, wet stock inlet, coarse granule products export, fine grained products export and waste gas outlet, it is characterized in that:
A) progression of fluidisation-mobile-drying unit is 3～30 grades, and the progression of fluidisation-move-drying-stage unit is 1 grade; Two side weir plates of fluidisation-mobile drying unit or fluidisation-move-drying-stage unit and the distance between the casing will guarantee that gas is 1～5m/s in the speed of this passage; Distance between two adjacent fluidisation-mobile drying units or fluidisation-move-drying-stage unit is 500～1000mm; The header board and the distance between the casing of fluidisation-mobile drying unit or fluidisation-mobile-drying-stage unit are 300～500mm;
B) fluidisation-mobile drying unit is welded together and is constituted by gas distribution grid, side weir plate, base plate, header board, auger conveyor and hot-wind inlet and casing, have the circular hole road on the gas distribution grid, circular hole road diameter is 1～3mm, percent opening is 2～10%, two blocks of side plates should equal the fluidized-bed layer height than the height that gas distribution grid exceeds, the angle of gas distribution grid and horizontal plane is 2～45 °, and the angle of base plate and horizontal plane is 40～70 °, and preceding plate height is greater than 200mm; The structural similarity of fluidisation-move-drying-stage unit and fluidisation-mobile drying unit just becomes hot-wind inlet classification wind inlet, and header board becomes the perforate situation porous plate identical with gas distribution grid.
2. require described a kind of multistage combined fluidizing-moving bed drier according to right 1, it is characterized in that: described circular hole road is oblique circular hole road, and tiltedly the angle of inclination in circular hole road is 5～15 °.
3. according to claim 1 or the described a kind of multistage combined fluidizing-moving bed drier of claim 2, it is characterized in that: this drier carries out the method for dry classification, be that wet stock is joined on the sieve plate of uppermost first order fluidisation-mobile-drying unit, by hot blast fine grained is carried out fluidized drying, and coarse granule moves the limit drying in the sieve plate top, continuous adding along with wet stock, the material of first order unit enters following unit, the second level and carries out drying, enter the next stage unit successively and proceed drying, after entering nethermost afterbody fluidisation-mobile-drying-stage unit, obtain qualified coarse granule and fine grained product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100104744A CN100445674C (en) | 2007-02-15 | 2007-02-15 | Multistage combined fluidizing-moving bed drier and drying method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100104744A CN100445674C (en) | 2007-02-15 | 2007-02-15 | Multistage combined fluidizing-moving bed drier and drying method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN101017051A CN101017051A (en) | 2007-08-15 |
| CN100445674C true CN100445674C (en) | 2008-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100104744A Expired - Fee Related CN100445674C (en) | 2007-02-15 | 2007-02-15 | Multistage combined fluidizing-moving bed drier and drying method thereof |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419079B (en) * | 2011-11-11 | 2013-08-14 | 中国科学院工程热物理研究所 | Solid particle material composite grading and drying device and method |
| WO2015100708A1 (en) * | 2014-01-06 | 2015-07-09 | 山东科院天力节能工程有限公司 | Drying equipment and drying method |
| CN112393530B (en) * | 2020-11-17 | 2022-11-11 | 浙江工业大学 | Drying process and equipment suitable for materials with large particle size difference and high requirement on uniformity of moisture content of products |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2114796U (en) * | 1991-11-08 | 1992-09-02 | 中国科学院工程热物理研究所 | Multi-layer multi-chamber fluidized bed dryer |
| CN2192852Y (en) * | 1993-12-27 | 1995-03-22 | 沈阳北方干燥设备研制中心 | Fluid drying machine with multi-layer vibration |
| JPH1183319A (en) * | 1997-08-29 | 1999-03-26 | Tsukishima Kikai Co Ltd | Device for drying and classifying coal using fluidized bed |
| US6253465B1 (en) * | 1998-11-02 | 2001-07-03 | Kawasaki Jukogyo Kabushiki Kaisha | Multi-chamber fluidized bed-carrying classifier |
| CN2554574Y (en) * | 2002-07-31 | 2003-06-04 | 任红兵 | Multi-story vibration fluid-bed drier |
-
2007
- 2007-02-15 CN CNB2007100104744A patent/CN100445674C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2114796U (en) * | 1991-11-08 | 1992-09-02 | 中国科学院工程热物理研究所 | Multi-layer multi-chamber fluidized bed dryer |
| CN2192852Y (en) * | 1993-12-27 | 1995-03-22 | 沈阳北方干燥设备研制中心 | Fluid drying machine with multi-layer vibration |
| JPH1183319A (en) * | 1997-08-29 | 1999-03-26 | Tsukishima Kikai Co Ltd | Device for drying and classifying coal using fluidized bed |
| US6253465B1 (en) * | 1998-11-02 | 2001-07-03 | Kawasaki Jukogyo Kabushiki Kaisha | Multi-chamber fluidized bed-carrying classifier |
| CN2554574Y (en) * | 2002-07-31 | 2003-06-04 | 任红兵 | Multi-story vibration fluid-bed drier |
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| CN101017051A (en) | 2007-08-15 |
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Assignee: Wuxi true silicon Chemical Co., Ltd. Assignor: Dalian University of Technology Contract record no.: 2010320000727 Denomination of invention: Multistage combined fluidizing-moving bed drier and drying method thereof Granted publication date: 20081224 License type: Exclusive License Open date: 20070815 Record date: 20100604 |
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