CN101738071B - Multi-layer circulation dryer - Google Patents
Multi-layer circulation dryer Download PDFInfo
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- CN101738071B CN101738071B CN2009102207462A CN200910220746A CN101738071B CN 101738071 B CN101738071 B CN 101738071B CN 2009102207462 A CN2009102207462 A CN 2009102207462A CN 200910220746 A CN200910220746 A CN 200910220746A CN 101738071 B CN101738071 B CN 101738071B
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Abstract
The invention relates to a multi-layer circulation dryer, comprising a hot smoke wind room, a dedusting and desulfurizing tower, a storage silo, a coal distributing machine, a drying room with a smoke outlet, a drying cart with an air foil, a wind room with a wind distributing opening, a reciprocating fire grate, a double-roller material distributing machine and a frame. The dryer is characterized in that the dedusting and desulfurizing tower and the hot smoke wind room form an up-and-down structure; multiple layers of ring-shaped drying devices are arranged at the periphery of the dedusting and desulfurizing tower and the hot smoke wind room; the upper part of each layer of drying device is provided with a ring-shaped drying room, the lower part thereof is provided with a ring-shaped wind room; the ring-shaped drying room is connected with the dedusting and desulfurizing tower by a smoke discharge pipeline; the ring-shaped wind room is connected with the hot smoke wind room by a wind inlet pipeline; the drying cart which moves along the circumference is arranged between the ring-shaped drying room and the ring-shaped wind room; the drying device at the top layer is provided with the storage silo and the coal distributing machine, the drying device at the lower layer is provided with the reciprocating fire grate and the double-roller material distributing machine. The multi-layer circulation dryer has the advantages that as boiler tail gas serves as hot wind energy for drying, lower temperature drying is realized, the heat energy cost is low and heat energy use ratio is improved. In addition, the drying area is greatly increased, final dusting is achieved and smoke dust concentration is reduced. Furthermore, as the multi-layer ring-shaped drying device is adopted, the multi-layer circulation device takes small space.
Description
Technical field
The invention belongs to a kind of coal-fired drying equipment, particularly a kind of multi-layer circulation dryer.
Background technology
Mostly about 10-20%, the brown coal water content is more up to 30% for the coal-fired moisture content of China, because coal-fired water content is higher, causes the fired coal combustion calorific value to descend, and identical heat increases freight volume down.Therefore to dry especially brown coal oven dry be to improve coal-fired calorific value and the important behave of practicing thrift transport power to coal.
At present, the coal in China dry technology is comparatively backward, and existing coal drying equipment adopts cylinder-rotating dry.Because coal rotates in cylinder; Cause most of coal dust to be taken away, not only cause energy loss, also caused the pollution of air ambient by hot blast; The drum-type coal drying needs the hot blast more than 600 ℃ simultaneously; Heat energy expends height, and equipment exhaust emissions temperature is up to 100-120 ℃, and the heat energy utilization rate is lower.Equipment occupation space is big in addition.
Summary of the invention
The purpose of this invention is to provide a kind of multi-layer circulation dryer, do not have coal ash pollution, also can remove the concentration of flue dust in the low cigarette institute, heat energy expends low, raising heat energy utilization rate, and equipment occupation space is little.
The objective of the invention is to realize through following technical scheme: it comprises the drying chamber of hot cigarette air compartment, dedusting and desulfurizing tower, storage bin, coal-distributing machine, band exhaust opening, the oven dry car of band air distribution plate, air compartment, reciprocating fire grate, two roller material distributing machine and the frame in band cloth air port; It is characterized in that: dedusting and desulfurizing tower and hot cigarette air compartment are for being provided with structure up and down; Periphery at dedusting and desulfurizing tower and hot cigarette air compartment is provided with the multi-layer annular drying equipment; Each layer drying equipment top is annular drying chamber; Its underpart is provided with annular air compartment, and annular drying chamber is communicated with dedusting and desulfurizing tower through smoke discharging pipe, and annular air compartment is communicated with hot cigarette air compartment through intake stack; Between annular drying chamber and annular air compartment, be provided with along the oven dry car of circumference operation; Drying equipment at top layer is provided with storage bin and coal-distributing machine, at the drying equipment of bottom reciprocating fire grate and coal breakage bucket is set, and is provided with reciprocating fire grate and two roller material distributing machine at the annular drying equipment of each layer except that bottom.
Connect the operation rail in the inside and outside both sides of oven dry car, internal and external circumference is provided with running roller in the frame upper edge, and the operation rail of oven dry car places on the running roller.
Inboard at the oven dry car is provided with side blocking roller, at the affixed chain in the outside of oven dry car, by the sprocket engagement chain of power set driving.
The polylith that the air distribution plate of oven dry car is set to arrange, every front end is hinged on the vehicle frame, and the rear end connects support roller, and support roller places on the circular orbit.
The coal breakage fracture is set on each layer circular orbit, arc track is set in coal breakage fracture rear end.
Connect deduster and air-introduced machine on the smoke discharging pipe of annular drying chamber connection dedusting and desulfurizing tower.
Annular air compartment is communicated with on the intake stack of hot cigarette air compartment and connects air blast.
Advantage of the present invention:
1, can utilize boiler exhaust gas as the oven dry hot blast energy, realize 200 ℃-150 ℃ low temperature drying, heat energy expends low, improves the heat energy utilization rate.
2, the oven dry car is along circulatory motion, and coal is evenly distributed on the air distribution plate of oven dry car, can guarantee that hot blast dries coal effectively equably.
3, the oven dry car adopts the orbital cycle operation, has greatly improved the oven dry area.
4, after flue gas got into air compartment, because dilatation rapidly, flue gas flow rate descended, and most of flue dust also can be separated from flue gas under the effect of gravity, plays the effect of final dusting.Not only do not have coal ash pollution, can also reduce the concentration of flue dust.
5, adopt the multi-layer annular drying equipment, equipment occupation space is little.
Description of drawings
Fig. 1 is the cutaway view (A-A of Fig. 2 analyses and observe) of structure of the present invention.
Fig. 2 is the vertical view of Fig. 2.
Fig. 3 is the local enlarged diagram of drying equipment that each layer is provided with reciprocating fire grate and two roller material distributing machine.
Fig. 4 is the structure enlarged diagram of each layer drying equipment.
Fig. 5 is the air distribution plate enlarged diagram of oven dry car.
Fig. 6 is the B-B cutaway view of Fig. 5.
Fig. 7 is the view of the air distribution plate of oven dry car through coal breakage fracture on the circular orbit.
Fig. 8 is that reciprocating fire grate is provided with sketch map with two roller material distributing machine.
The specific embodiment
See Fig. 1,2,4, concrete structure of the present invention is following: dedusting and desulfurizing tower 12 adopts with hot cigarette air compartment 11 structure is set up and down, and dedusting and desulfurizing tower 12 all adopts the prior art scheme with hot cigarette air compartment 11.Periphery at dedusting and desulfurizing tower 12 and hot cigarette air compartment 11 is provided with shellring shape drying equipment, and each layer drying equipment top is annular drying chamber 5, and its underpart is provided with annular air compartment 6.Annular drying chamber 5 is communicated with dedusting and desulfurizing tower 12 through smoke discharging pipe, on smoke discharging pipe, connects deduster 9 and air-introduced machine 10.Annular air compartment 6 is communicated with hot cigarette air compartment 11 through intake stack, on intake stack, connects air blast 7.The bottom of annular air compartment 6 is provided with ash discharging hole.
See Fig. 1,4; Between annular drying chamber 5 and annular air compartment 6, be provided with along many oven dry cars 4 of circumference operation; Connect operation rail 20 in the inside and outside both sides of oven dry car 4, internal and external circumference is provided with running roller 19 in the frame upper edge, and the operation rail 20 of oven dry car places on the running roller 19.Realize that the oven dry car is in running roller 19 upper edge circumference operations.Inboard at oven dry car 4 is provided with side blocking roller 21, at the affixed chain 18 in the outside of oven dry car 4, and sprocket wheel 17 engagement chains 18, sprocket wheel 17 is through reducing gear 16 motor 15 that is in transmission connection.Realize the driving of power to oven dry car 4.
See Fig. 5,6,7, oven dry car 4 is provided with the air distribution plate 24 of band wind distributing hole, the polylith that air distribution plate 24 is set to arrange, and every front end is hinged on the vehicle frame 23 through rotating shaft 25, and the rear end connects support roller 22.Every layer of annular drying equipment is provided with a circular orbit 26, and support roller 22 places on the circular orbit 26.Coal charge to be dried places on the air distribution plate 24.The coal breakage fracture is set on each layer circular orbit 26, arc track is set in coal breakage fracture rear end.When oven dry car 4 passes through track coal breakage fracture; Each piece air distribution plate 24 rear end successively loses track and relies on and fall; Coal charge promptly falls, and after air distribution plate 24 rear ends climbed up along the arc track of coal breakage fracture rear end, the air distribution plate 24 of level can be proceeded the cloth coal.
See Fig. 1,2,3, be provided with two place's storage bins 13 and coal-distributing machines 14 at the drying equipment of top layer, coal-distributing machine 14 adopts existing structures.Below coal-distributing machine 14, be provided with the oven dry car 4, the oven dry car 4 below be annular air compartment 6.Drying equipment at bottom is provided with reciprocating fire grate 3 and coal breakage bucket 2, and belt conveyor 1 is set below coal breakage bucket 2.See Fig. 8; Be provided with reciprocating fire grate 3 and two roller material distributing machine 8 at the annular drying equipment of each layer except that bottom; Promptly below the coal breakage fracture of each layer circular orbit 26, receiving hopper 28 is set; Reciprocating fire grate 3 is set below receiving hopper 28, storage bin 27 is set below reciprocating fire grate 3, two roller material distributing machine 8 are set below storage bin 27.Effect be with the coal charge that last layer moves half cycle fall and the cloth coal to one deck down, proceed oven dry, in like manner, until bottom.Reciprocating fire grate 3 adopts the existing equipment structure with two roller material distributing machine 8.
Operation principle: coal charge to be dried is from storage bin 13 inputs of top layer; Each dries car 4 along circumferentially operation; And coal charge is laid in equably on the air distribution plate of respectively drying car 24 of top layer by coal-distributing machine 14; Come the flue gas hot blast of self-heating cigarette air compartment 11 to get into air compartment 6; Because dilatation rapidly; Flue gas flow rate descends, and most of flue dust is separated from flue gas under the effect of gravity, plays the effect of final dusting.Wind distributing hole through air distribution plate 24 passes through the coal seam equably then, and drying is carried out in the coal seam, and the flue gas hot blast gets into dedusting and desulfurizing towers 12 from the exhaust opening at drying chamber 5 tops through deduster 9, carries out further dust-removal and desulfurizing.When last layer runs to half cycle; Through reciprocating fire grate 3 and two roller material distributing machine 8 coal charge is fallen and the cloth coal to one deck down, proceed oven dry, after drying fully to bottom; Discharge through reciprocating fire grate 3 and coal breakage bucket 2, and through belt conveyor 1 output.
Claims (6)
1. multi-layer circulation dryer; It comprises hot cigarette air compartment, dedusting and desulfurizing tower, storage bin, coal-distributing machine, annular drying chamber, oven dry car, annular air compartment, reciprocating fire grate, two roller material distributing machine and frame; It is characterized in that: dedusting and desulfurizing tower and hot cigarette air compartment be for being provided with structure up and down, in the periphery of dedusting and desulfurizing tower and hot cigarette air compartment the multi-layer annular drying equipment is set, and each layer drying equipment top is annular drying chamber; Its underpart is provided with annular air compartment; The annular drying chamber is communicated with dedusting and desulfurizing tower through smoke discharging pipe, and annular air compartment is communicated with hot cigarette air compartment through intake stack, between annular drying chamber and annular air compartment, is provided with along the oven dry car of circumference operation; Connect the operation rail in the inside and outside both sides of oven dry car; Internal and external circumference is provided with running roller in the frame upper edge, and the operation rail of oven dry car places on the running roller, is provided with storage bin and coal-distributing machine at the drying equipment of top layer; Drying equipment at bottom is provided with reciprocating fire grate and coal breakage bucket, is provided with reciprocating fire grate and two roller material distributing machine at the annular drying equipment of each layer except that bottom.
2. multi-layer circulation dryer according to claim 1 is characterized in that: the inboard at the oven dry car is provided with side blocking roller, at the affixed chain in the outside of oven dry car, by the sprocket engagement chain of power set driving.
3. multi-layer circulation dryer according to claim 1 is characterized in that: the polylith that the air distribution plate of oven dry car is set to arrange, and every front end is hinged on the vehicle frame, and the rear end connects support roller, and support roller places on the circular orbit.
4. multi-layer circulation dryer according to claim 1 is characterized in that: the coal breakage fracture is set on each layer circular orbit, in coal breakage fracture rear end arc track is set.
5. multi-layer circulation dryer according to claim 1 is characterized in that: connect deduster and air-introduced machine on the smoke discharging pipe of annular drying chamber connection dedusting and desulfurizing tower.
6. multi-layer circulation dryer according to claim 1 is characterized in that: annular air compartment is communicated with on the intake stack of hot cigarette air compartment and connects air blast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102207462A CN101738071B (en) | 2009-12-15 | 2009-12-15 | Multi-layer circulation dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102207462A CN101738071B (en) | 2009-12-15 | 2009-12-15 | Multi-layer circulation dryer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101738071A CN101738071A (en) | 2010-06-16 |
| CN101738071B true CN101738071B (en) | 2012-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102207462A Expired - Fee Related CN101738071B (en) | 2009-12-15 | 2009-12-15 | Multi-layer circulation dryer |
Country Status (1)
| Country | Link |
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| CN (1) | CN101738071B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102976048B (en) * | 2012-12-06 | 2015-09-23 | 信阳市四通机械制造有限公司 | Annular materials feedway |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2050574U (en) * | 1989-03-28 | 1990-01-03 | 刘范昌 | Drier |
| CN100575841C (en) * | 2007-04-30 | 2009-12-30 | 李功民 | A kind of vibrating mixed flow drying method and system |
-
2009
- 2009-12-15 CN CN2009102207462A patent/CN101738071B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2050574U (en) * | 1989-03-28 | 1990-01-03 | 刘范昌 | Drier |
| CN100575841C (en) * | 2007-04-30 | 2009-12-30 | 李功民 | A kind of vibrating mixed flow drying method and system |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2006-7167A 2006.01.12 |
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| Publication number | Publication date |
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| CN101738071A (en) | 2010-06-16 |
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Granted publication date: 20120502 Termination date: 20121215 |