CN102252501B - Mobile hot air distribution plate type fluidized bed dryer - Google Patents
Mobile hot air distribution plate type fluidized bed dryer Download PDFInfo
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- CN102252501B CN102252501B CN 201110113177 CN201110113177A CN102252501B CN 102252501 B CN102252501 B CN 102252501B CN 201110113177 CN201110113177 CN 201110113177 CN 201110113177 A CN201110113177 A CN 201110113177A CN 102252501 B CN102252501 B CN 102252501B
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Abstract
The invention discloses a mobile hot air distribution plate type fluidized bed dryer, and belongs to the technical field of drying equipment and engineering. The dryer is characterized by comprising a box body, a hot air distribution chamber, a mobile hot air distribution plate assembly, a mobile weir plate assembly, a material seal type hot air sealing structure, an air knife, a hot air inlet, awaste gas outlet, a wet material inlet, a product outlet and the like. A drying method using the drying equipment comprises the following steps of: adding a wet material onto a hot air distribution plate through the wet material inlet, performing fluidized drying on fine granules by means of hot air in a mobile hot air distribution plate type fluidized bed, drying coarse granules and the mobile hot air distribution plate together while moving, discharging the dried qualified product from the product outlet, and exhausting the waste gas from the waste gas outlet. The dryer has the advantages of simple structure, easiness in manufacture, small floor area, narrow material residence time distribution, uniform water content of the product, and safety and convenience in the operation process.
Description
Technical field
The invention belongs to drying equipment and field of engineering technology, relate to the drying equipment of the inflammable and explosive materials such as a kind of coking coal, brown coal and oil shale.
Background technology
The drying means of the inflammable and explosive materials such as coking coal, brown coal and oil shale has a variety of.Press the mode that drying medium contacts with wet stock, can be divided into the dry two large classes of direct-heating type drying and indirect heating type.Because coking coal, brown coal and oil shale are not afraid of smoke pollution, not with flue gas generation chemical reaction, therefore industrial the most frequently used be direct-heating type comvection dryer take flue gas as drying medium, such as pneumatic conveyer dryer, revolving drier, rotary pipe type drier and fluidized bed dryer etc.Pneumatic conveyer dryer is simple in structure, and treating capacity is large, and drying time is short, but SR is large, and the dry products that obtain low moisture (particularly below 5%) is relatively more difficult.Revolving drier and rotary pipe type drier, operating flexibility is large, and production capacity is large, but equipment volume is large, and one-time investment is high.Fluidized bed dryer is simple in structure, and cost is low, and is easy to maintenance, and treating capacity is large, but requires the wet stock even particle size distribution.As everyone knows, after coking coal, brown coal and oil shale pulverizing, the particle size distribution that obtains is wider, if adopt common fluidized bed dryer to carry out drying, bulky grain will occur and also not be fluidized, and granule has been entrained with outside the bed by air-flow; Perhaps the granule fluidisation and dead bed or hot air distribution plate sieve pore blockade problem appear in the bulky grain transfixion.At present, a variety of fluidized bed drying equipments for the coal charge drying have been developed, for example, the Chinese patent application name is called " multi-chamber type fluidized bed-carrying classifier " (CN1153633C), " drying means of coal and drying device " (CN1120872C), " moving iris type fluidized bed " (CN101063059A), multistage combined fluidizing one moving bed dryer and drying means (CN1100445674C) thereof, a kind of fluidized bed air separating damping machine and selection by winnowing damping new technology (CN101786080A) etc., although above-mentioned these fluidized bed dryers all have dry technology advantage separately, but the hot air distribution plate of these drying equipments all is actionless, the local stagnant area that all has in various degree material in the drying equipment, because coking coal, brown coal and oil shale belong to inflammable and explosive material, material Local Residence Time in drying equipment will occur so long, have the potential safety hazards such as burning and blast.
Summary of the invention
The object of the invention is to overcome the defective that above-mentioned prior art exists, a kind of Mobile hot air distribution plate type fluidized bed dryer with self-cleaning function is provided, with wet stock particle equably fluidisation or the movement in this drying equipment that realizes wide size distribution, safe operation process ground is carried out.
The present invention is achieved through the following technical solutions.Mobile hot air distribution plate type fluidized bed dryer comprises following a few part: casing, hot blast distributing chamber, movable hot air distribution plate assembly, mobile weir plate assembly, material envelope formula hot blast hermetically-sealed construction, air knife, hot-wind inlet, waste gas outlet, wet stock entrance and products export etc.The movable hot air distribution plate assembly comprises hot air distribution plate, driving wheel, driven pulley, regulating wheel, roller chain and movable hot air distribution plate drive unit; Hot air distribution plate is linked together by the little hot air distribution plate of polylith and consists of, have oblique circular hole road on the little hot air distribution plate, channel diameter is 1～4mm, percent opening is 2%～15%, the angle of inclined channel and vertical direction is 0～65 °, with bolt little hot air distribution plate and roller chain is tightened together; The horizontal motion speed of movable hot air distribution plate is 20～300mm/s.Mobile weir plate assembly comprises weir plate, head sprocket wheel, tail sprocket, chip conduction chain and mobile weir plate drive unit; The height of weir plate is 100～400mm, and the distance between weir plate and the weir plate is 100～300mm, and the gap between weir plate and the casing is 10～15mm, with bolt weir plate and conduction chain is tightened together; The horizontal motion speed of mobile weir plate is 20～300mm/s.Hot blast distributing chamber comprises side plate I, side plate II, helical feed removal device, fine powder outlet, helical feed removal device drive unit, casing and hot air distribution plate; Be Welding Structure between side plate I wherein, side plate II, helical feed removal device and the casing.Material envelope formula hot blast hermetically-sealed construction comprises casing, external seal riser, sealing transverse slat, swash plate, hydrodynamic reciprocating sealing riser, interior sealing riser and hot air distribution plate; Gap between the end face of hydrodynamic reciprocating sealing riser and the sealing transverse slat is 10～20mm, the end face of external seal riser and interior sealing riser and the gap between the hot air distribution plate are 10～20mm, gap between external seal riser and the hydrodynamic reciprocating sealing riser is 10～20mm, gap between hydrodynamic reciprocating sealing riser and the interior sealing riser is 10～20mm, the end face of hot air distribution plate and the gap between the casing are 10～20mm, and the angle between swash plate and the casing is less than 30 °; Adopt Welding Structure between casing, external seal riser, sealing transverse slat, swash plate and the interior sealing riser, with bolt hot air distribution plate and hydrodynamic reciprocating sealing riser are tightened together.Air knife is the stainless steel tube of diameter 30～100mm, and it faces and has 3～5 row's circular hole roads on the tube wall of hot air distribution plate direction, and channel diameter is 2～6mm, and pitch of holes is 8～15mm, and the distance between the adjacent 2 round roads is 6～10mm; The operating pressure of gas is 0.2～0.6MPa in the pipe.
The drying means that adopts above-mentioned Mobile hot air distribution plate type fluidized bed dryer to carry out is: wet stock is joined on the hot air distribution plate through the wet stock entrance, in the movable hot air distribution plate type fluid bed, by hot blast fine grained is carried out fluidized drying, and coarse granule with movable hot air distribution plate while moving drying, dry good qualified products are discharged by products export, and waste gas is discharged by waste gas outlet.
Effect of the present invention and benefit are: device structure is simple, and floor space is little, and the residence time of material narrowly distributing does not exist the material prolonged stay to arrange not out problem in drying equipment, has effectively prevented the susceptible to plugging phenomenon in sieve plate duct, and the product water content is even.Realized granule materials equably fluidisation or movement in Mobile hot air distribution plate type fluidized bed dryer of wide size distribution, made safe operation process convenient.
Description of drawings
Fig. 1 is the structural representation of Mobile hot air distribution plate type fluidized bed dryer.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the enlarged drawing of local I among Fig. 2.
Fig. 4 is the enlarged drawing of local I I among Fig. 2.
Fig. 5 is movable hot air distribution plate assembly and hot blast distributing chamber structural representation.
Fig. 6 is the top view of Fig. 5.
Fig. 7 is mobile weir plate modular construction schematic diagram.
Fig. 8 is the top view of Fig. 7.
1. wet stock entrances among the figure; 2. casing; 3. waste gas outlet; 4. mobile weir plate assembly; 5. air knife; 6. products export; 7. hot-wind inlet; 8. hot blast distributing chamber; 9. movable hot air distribution plate assembly; 10. fine powder outlet; 11. helical feed removal device; 12. movable hot air distribution plate drive unit; 13. material envelope formula hot blast hermetically-sealed construction; 14. mobile weir plate drive unit; 15. helical feed removal device drive unit; 16. external seal riser; 17. sealing transverse slat; 18. swash plate; 19. hydrodynamic reciprocating sealing riser; 20. interior sealing riser; 21. hot air distribution plate; 22. driving wheel; 23. regulating wheel; 24. roller chain; 25. driven pulley; 26. side plate I; 27. side plate II; 28. little hot air distribution plate; 29. head sprocket wheel; 30. weir plate; 31. chip conduction chain; 32. tail sprocket.
The specific embodiment
Be described in detail the specific embodiment of the present invention below in conjunction with technical scheme and accompanying drawing.
Such as Fig. 1～shown in Figure 8, movable hot air distribution plate assembly 9 comprises hot air distribution plate 21, driving wheel 22, driven pulley 25, regulating wheel 23, roller chain 24 and movable hot air distribution plate drive unit 12; Hot air distribution plate 21 is linked together by the little hot air distribution plate 28 of polylith and consists of, have oblique circular hole road on the little hot air distribution plate 28, channel diameter is 1～4mm, percent opening is 2%～15%, the angle of inclined channel and vertical direction is 0～65 °, with bolt little hot air distribution plate 28 is tightened together with roller chain 24; The horizontal motion speed of movable hot air distribution plate is 20～300mm/s, by regulating its movement velocity, to guarantee that bulky grain has enough drying residencing times in fluid bed, simultaneously can also avoid material overstand in drier, hot-spot occur and cause the potential safety hazard such as catch fire.Hot blast distributing chamber 8 comprises side plate I 26, side plate II 27, helical feed removal device 11, fine powder outlet 10, helical feed removal device drive unit 15, casing 2 and hot air distribution plate 21; Be Welding Structure between side plate I 26 wherein, side plate II 27, helical feed removal device 11 and the casing 2; In the operating process, adopt helical feed removal device 11 to discharge through fine powder outlet 10 from the powder material that hot air distribution plate 21 leaks down, to avoid the problems such as powder material occurs catching fire at hot blast distributing chamber 8 interior overstands.Mobile weir plate assembly 4 comprises weir plate 30, head sprocket wheel 29, tail sprocket 32, chip conduction chain 31 and mobile weir plate drive unit 14; The height of weir plate 30 is 100～400mm, and the distance between weir plate and the weir plate is 100～300mm, and the gap between weir plate 30 and the casing 2 is 10～15mm, with bolt weir plate 30 and conduction chain 31 is tightened together; The horizontal motion speed of mobile weir plate is 20～300mm/s, by regulating its movement velocity, regulates the fluidized-bed layer height, to guarantee that fine granular materials has enough fluidized drying time of staying in fluid bed.Material envelope formula hot blast hermetically-sealed construction 13 comprises casing 2, external seal riser 16, sealing transverse slat 17, swash plate 18, hydrodynamic reciprocating sealing riser 19, interior sealing riser 20 and hot air distribution plate 21; Gap between the end face of hydrodynamic reciprocating sealing riser 19 and the sealing transverse slat 17 is 10～20mm, end face and the gap between the hot air distribution plate 21 of external seal riser 16 and Mi Nei envelope riser 20 are 10～20mm, gap between external seal riser 16 and the hydrodynamic reciprocating sealing riser 19 is 10～20mm, gap between hydrodynamic reciprocating sealing riser 19 and the interior sealing riser 20 is 10～20mm, gap between the end face of hot air distribution plate 21 and the casing 2 is 10～20mm, and the angle between swash plate 18 and the casing 2 is less than 30 °; Adopt Welding Structure between casing 2, external seal riser 16, sealing transverse slat 17, swash plate 18 and the interior sealing riser 20, with bolt hot air distribution plate 21 and hydrodynamic reciprocating sealing riser 19 are tightened together; In the operating process, pass equably the fluid bed granulate bed for guaranteeing hot blast, prevent that hot blast from directly passing through from the end face of hot air distribution plate 21 and the slit between the casing 2, rely on this material to seal to be full of material in the formula hot blast hermetically-sealed construction 13 and realize.Air knife 5 is the stainless steel tube of diameter 30～100mm, and it faces and has 3～5 row's circular hole roads on the tube wall of hot air distribution plate direction, and channel diameter is 2～6mm, and pitch of holes is 8～15mm, and the distance between the adjacent 2 round roads is 6～10mm; Gas-operated pressure is 0.2～0.6MPa in the pipe of air knife 5, remains in material in hot air distribution plate 21 ducts with removing, avoids occurring the gas duct problem of feed blocking hot air distribution plate 21.
Such as Fig. 1～shown in Figure 4, wet stock is joined on the hot air distribution plate 21 through wet stock entrance 1, in the movable hot air distribution plate type fluid bed, by hot blast fine grained is carried out fluidized drying, and coarse granule with movable hot air distribution plate 9 while moving drying, dry good qualified products are discharged by products export 6, and waste gas is discharged by waste gas outlet 3.
Claims (4)
1. Mobile hot air distribution plate type fluidized bed dryer, comprise casing, hot blast distributing chamber, movable hot air distribution plate assembly, mobile weir plate assembly, material envelope formula hot blast hermetically-sealed construction, air knife, hot-wind inlet, waste gas outlet, wet stock entrance and products export, it is characterized in that:
(1) hot blast distributing chamber comprises side plate I, side plate II, helical feed removal device, fine powder outlet, helical feed removal device drive unit, casing and hot air distribution plate; Be Welding Structure between side plate I wherein, side plate II, helical feed removal device and the casing;
(2) the movable hot air distribution plate assembly comprises hot air distribution plate, driving wheel, driven pulley, regulating wheel, roller chain and movable hot air distribution plate drive unit; Hot air distribution plate is linked together by the little hot air distribution plate of polylith and consists of, and has oblique circular hole road on the little hot air distribution plate, with bolt little hot air distribution plate and roller chain is tightened together;
(3) mobile weir plate assembly comprises weir plate, head sprocket wheel, tail sprocket, chip conduction chain and mobile weir plate drive unit, with bolt weir plate and conduction chain is tightened together;
(4) material envelope formula hot blast hermetically-sealed construction comprises casing, external seal riser, sealing transverse slat, swash plate, hydrodynamic reciprocating sealing riser, interior sealing riser and hot air distribution plate; Adopt Welding Structure between casing, external seal riser, sealing transverse slat, swash plate and the interior sealing riser, with bolt hot air distribution plate and hydrodynamic reciprocating sealing riser are tightened together.
2. a kind of Mobile hot air distribution plate type fluidized bed dryer according to claim 1, it is characterized in that: oblique circular hole road on the described little hot air distribution plate, channel diameter is 1～4mm, and percent opening is 2%～15%, and the angle of inclined channel and vertical direction is 0～65 °.
3. a kind of Mobile hot air distribution plate type fluidized bed dryer according to claim 1, it is characterized in that: the gap between the end face of hydrodynamic reciprocating sealing riser and the sealing transverse slat is 10～20mm, the end face of external seal riser and interior sealing riser and the gap between the hot air distribution plate are 10～20mm, gap between external seal riser and the hydrodynamic reciprocating sealing riser is 10～20mm, gap between hydrodynamic reciprocating sealing riser and the interior sealing riser is 10～20mm, the end face of hot air distribution plate and the gap between the casing are 10～20mm, and the angle between swash plate and the casing is less than 30 °.
4. according to claim 1,2 or 3 described a kind of Mobile hot air distribution plate type fluidized bed dryers, it is characterized in that: air knife is the stainless steel tube of diameter 30～100mm, it faces and has 3～5 row's circular hole roads on the tube wall of hot air distribution plate direction, channel diameter is 2～6mm, pitch of holes is 8～15mm, and the distance between the adjacent 2 round roads is 6～10mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110113177 CN102252501B (en) | 2011-05-04 | 2011-05-04 | Mobile hot air distribution plate type fluidized bed dryer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110113177 CN102252501B (en) | 2011-05-04 | 2011-05-04 | Mobile hot air distribution plate type fluidized bed dryer |
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| CN102252501A CN102252501A (en) | 2011-11-23 |
| CN102252501B true CN102252501B (en) | 2013-10-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104482216A (en) * | 2014-11-14 | 2015-04-01 | 常州大学 | Novel rotary drum type coking coal dryer sealing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3815255A (en) * | 1971-10-08 | 1974-06-11 | Yamato Sanko Mfg Ltd | Fluidized bed dryer |
| CN1844815A (en) * | 2006-05-12 | 2006-10-11 | 南京农业大学 | Flat barn type grain drier |
| CN101063059A (en) * | 2007-04-29 | 2007-10-31 | 济南钢铁股份有限公司 | Moving iris type fluidized bed |
| CN101403570A (en) * | 2008-11-21 | 2009-04-08 | 中冶长天国际工程有限责任公司 | Circular cooler air input system, annular ventiduct and annular liquid flume |
| CN202066304U (en) * | 2011-05-04 | 2011-12-07 | 大连理工大学 | Movable hot air distribution plate type fluidized bed dryer |
-
2011
- 2011-05-04 CN CN 201110113177 patent/CN102252501B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3815255A (en) * | 1971-10-08 | 1974-06-11 | Yamato Sanko Mfg Ltd | Fluidized bed dryer |
| CN1844815A (en) * | 2006-05-12 | 2006-10-11 | 南京农业大学 | Flat barn type grain drier |
| CN101063059A (en) * | 2007-04-29 | 2007-10-31 | 济南钢铁股份有限公司 | Moving iris type fluidized bed |
| CN101403570A (en) * | 2008-11-21 | 2009-04-08 | 中冶长天国际工程有限责任公司 | Circular cooler air input system, annular ventiduct and annular liquid flume |
| CN202066304U (en) * | 2011-05-04 | 2011-12-07 | 大连理工大学 | Movable hot air distribution plate type fluidized bed dryer |
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