CN103090658B - Wet sand oven-dry system - Google Patents
Wet sand oven-dry system Download PDFInfo
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- CN103090658B CN103090658B CN201310040796.9A CN201310040796A CN103090658B CN 103090658 B CN103090658 B CN 103090658B CN 201310040796 A CN201310040796 A CN 201310040796A CN 103090658 B CN103090658 B CN 103090658B
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Abstract
The invention relates to the oven-dry field, in particular to a wet sand oven-dry system. The wet sand oven-dry system aims at solving the technical problem that dust is produced before coal enters a furnace in fluid bed in the wet sand oven-dry system. Therefore, the technical scheme is that the wet sand oven-dry system comprises a coal feed hopper, the furnace in fluid bed, a sand feed pipe, a drier, an induced draft fan and an air pumping pipe. A discharge port, an air outlet and a feed port are formed in the drier. The induced draft fan is communicated with the air outlet of the drier. The sand feed pipe is connected with the feed port of the drier. An air inlet and an air outlet are formed in the furnace in fluid bed. Coal of the furnace in fluid bed is sent into the furnace in fluid bed through the coal feed hopper, and the air outlet of the furnace in fluid bed is connected with the feed port of the drier. A first end of the air pumping pipe is arranged inside the furnace in fluid bed, and a second end of the air pumping pipe is connected with the coal feed hopper. Due to the fact that the air pumping pipe is arranged between the coal feed hopper and the furnace in fluid bed, the dust produced during the process that the coal enter the furnace in fluid bed is sent into the furnace in fluid bed through the air pumping pipe, and therefore not only can environment pollution be avoided, but also energy resources are fully and reasonably used.
Description
Technical field
The present invention relates to drying field, particularly relate to a kind of Wet sand drying system.
Background technology
When dry-mixed mortar is produced, require that raw material sand moisture content is less than 0.5%, the many dry-mixed mortars that can not be directly used in because moisture content is too high of raw sand are produced, therefore, raw sand needs to dry it before using, and makes its moisture content reach the condition meeting dry-mixed mortar production requirement.Wet sand drying system in existing dry mortar mixing plant comprises dryer and fluidized bed furnace, first damp sand is introduced dryer, then the heat energy that fluidized bed furnace produces is introduced dryer, and the damp sand entering dryer is dried by the heat energy produced by fluidized bed furnace.And the heat energy many employings coal combustion in fluidized bed furnace transforms, coal particularly can produce more dust before entering fluidized bed furnace when fragmentation, cause environmental pollution, was also unfavorable for the use of equipment simultaneously.
Summary of the invention
In view of this, the object of the invention is to: solved coal in Wet sand drying system before entering fluidized bed furnace, produce the technical problem of dust.Therefore, the invention provides following technical scheme:
A kind of Wet sand drying system, comprises coal feeding bucket, fluidized bed furnace, sand-feeding tube, dryer, air-introduced machine and exhaust column; Described dryer is provided with discharge gate, exhaust outlet and feeding mouth, described air-introduced machine is communicated with the exhaust outlet of described dryer, described sand-feeding tube is connected with the feeding mouth of described dryer, described fluidized bed furnace is provided with air intake vent and air outlet, coal is sent in described fluidized bed furnace after described coal feeding bucket, the air outlet of described fluidized bed furnace is connected with the feeding mouth of described dryer, dries later sand and discharges through described discharge gate; The first end of described exhaust column is arranged in fluidized bed furnace, and the second end of described exhaust column is connected with described coal feeding bucket.
In the course of work, the dust kicked up is sent in described fluidized bed furnace by exhaust column after described coal feeding bucket.
Preferably, described exhaust column is obliquely installed, and the second end of described exhaust column is higher than the first end of described exhaust column.
Preferably, the angle of described exhaust column and horizontal plane is more than or equal to 45 °.
Preferably, described exhaust column is provided with volume damper.
Preferably, the air intake vent of described fluidized bed furnace connects an air blast.
Preferably, the air intake vent of described fluidized bed furnace connects an air blast.
Preferably, during system works, the air quantity of described air-introduced machine is greater than the air quantity of described air blast.
Preferably, above-mentioned Wet sand drying system also comprises deduster, and described air-introduced machine is communicated with by deduster with the exhaust outlet of described dryer.
Further, above-mentioned Wet sand drying system also comprises coal disintegrating machine, and the discharging opening of described coal feeding bucket is connected with the feeding mouth of described coal disintegrating machine, and coal sends into described fluidized bed furnace through described coal crusher in crushing to the particle size meeting combustion requirements.
Preferably, Wet sand drying system also comprises elevator and coal feeding system, the feeding mouth of described elevator is connected with the discharging opening of described coal disintegrating machine, the discharging opening of described elevator is connected with the feeding mouth of described coal feeding system, and the discharging opening of described coal feeding system is connected with the feeding mouth of described fluidized bed furnace.
Further, the link position of the second end of described exhaust column substitutes described coal feeding bucket by described coal disintegrating machine.
Compared with prior art, beneficial effect of the present invention is as follows: owing to being provided with exhaust column between coal feeding bucket and fluidized bed furnace or between coal disintegrating machine and fluidized bed furnace, therefore the dust that coal produces in the process entering fluidized bed furnace all can send into fluidized bed furnace through exhaust column, both can avoid contaminated environment, more sufficiently and reasonably can also utilize the energy; Being obliquely installed of exhaust column can prevent exhaust column from being blocked by dust; On exhaust column, arranging of volume damper can according to the size of the number control air quantity of dust, can dust adsorption more fully.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Figure 1 shows that the structural representation of Wet sand drying system of the present invention.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 1, Wet sand drying system of the present invention comprises: coal feeding bucket 4, fluidized bed furnace 6, sand-feeding tube 7, dryer 11, air-introduced machine 9, exhaust column 13 and air blast 12; Dryer 11 is provided with discharge gate, exhaust outlet and feeding mouth, air-introduced machine 9 is communicated with the exhaust outlet of dryer 11, sand-feeding tube 7 is connected with the feeding mouth of dryer 11, fluidized bed furnace 6 is provided with air intake vent and air outlet, the air intake vent of fluidized bed furnace 6 connects air blast 12, during system works, the air quantity of air-introduced machine 9 is greater than the air quantity of air blast 12; Coal is sent in fluidized bed furnace 6 after coal feeding bucket 4, the air outlet of fluidized bed furnace 6 is connected with the feeding mouth of dryer 11, the discharge gate of drying later sand drying machine 11 is discharged, exhaust column 13 and horizontal plane angle angle at 45 ° are obliquely installed, its first end is arranged in fluidized bed furnace 6, second end is connected with coal feeding bucket 4, and the second end of exhaust column 13 is higher than the first end of exhaust column 13.When dryer 11 works, the dedusting air quantity of air-introduced machine 9 is greater than the air quantity of air blast 12, fluidized bed furnace is made to be in negative pressure state, thus ensure the proper flow of heat energy, increase by an exhaust column 13 at coal feeding bucket 4 place, make it be communicated with fluidized bed furnace 6, utilize fluidized bed furnace 6 and extraneous pressure differential, the dust that coal feeding bucket 4 place produces is inhaled into fluidized bed furnace 6, and the air quantity produced in company with air blast 12 enters in the heat energy process of circulation of dryer 11 together, prevents the excessive of dust.
In other examples, exhaust column 13 also can be provided with volume damper 14, utilize volume damper 14 to control air force and switch in exhaust column 13.
In other examples, also comprise deduster 10, air-introduced machine 9 is communicated with by deduster 10 with the exhaust outlet of dryer 11, while air inducing, reach dedusting, reduces the dust contained in final discharge wind, reduces environmental pollution.
As shown in Figure 1, Wet sand drying system in another embodiment of the present invention further comprises coal disintegrating machine 2, the discharging opening of coal feeding bucket 4 is connected with the feeding mouth of disintegrating machine 2, coal is crushed to after the particle size meeting combustion requirements through coal disintegrating machine 2 and sends into described fluidized bed furnace 6, exhaust column 13 becomes 60 ° of angles to be obliquely installed with horizontal plane angle, its first end is arranged in fluidized bed furnace 6, and the second end is connected with disintegrating machine 2, and the second end of exhaust column 13 is higher than the first end of exhaust column 13.Increase by an exhaust column 13 at disintegrating machine 2 place, it is made to be communicated with fluidized bed furnace 6, utilize fluidized bed furnace 6 and extraneous pressure differential, the dust that broken coal produces is sucked fluidized bed furnace 6 in time, the air quantity produced in company with air blast 12 enters in the heat energy process of circulation of dryer 11 together, prevents the excessive of dust in time.
In other examples, Wet sand drying system of the present invention also can comprise elevator 1 and coal feeding system 5 further, the feeding mouth of elevator 1 is connected with the discharging opening of coal disintegrating machine 2, the discharging opening of elevator 1 is connected with the feeding mouth of coal feeding system 5, the discharging opening of coal feeding system 5 is connected with the feeding mouth of fluidized bed furnace 6, utilize elevator 1 and coal feeding system 5 that the coal met the demands is sent into dryer, certainly can also adopt other different mode of movements that coal is sent into dryer.
In other examples, Wet sand drying system of the present invention also can comprise further, coal delivery system 3, feed coal is transported to coal feeding bucket 4, raw coal can be broken for the coal combustion met the demands before entering coal feeding bucket 4, also can be broken into the coal combustion met the demands after coal feeding bucket 4.In order to prevent dust from overflowing, can at coal feeding bucket 4 place, coal fragmentation place all arranges and is communicated with the exhaust column of dryer, makes the dust that produces by time, suction dryer fully, can environmental pollution be reduced, can raw material availability be improved again.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a Wet sand drying system, comprise coal feeding bucket (4), fluidized bed furnace (6), sand-feeding tube (7), dryer (11) and air-introduced machine (9), (11) are provided with discharge gate with described dryer, exhaust outlet and feeding mouth, described air-introduced machine (9) is communicated with the exhaust outlet of described dryer (11), described sand-feeding tube (7) is connected with the feeding mouth of described dryer (11), (6) are provided with air intake vent and air outlet with described fluidized bed furnace, coal is sent in described fluidized bed furnace (6) after described coal feeding bucket (4), the air outlet of described fluidized bed furnace (6) is connected with the feeding mouth of described dryer (11), dry later sand to discharge through described discharge gate, it is characterized in that: also comprise exhaust column (13), the first end of described exhaust column (13) is arranged in fluidized bed furnace (6), second end of described exhaust column (13) is connected with described coal feeding bucket (4), the air intake vent of described fluidized bed furnace (6) connects an air blast (12), during system works, the air quantity of described air-introduced machine (9) is greater than the air quantity of described air blast (12).
2. Wet sand drying system according to claim 1, is characterized in that: described exhaust column (13) is obliquely installed, and the second end of described exhaust column (13) is higher than the first end of described exhaust column (13).
3. Wet sand drying system according to claim 2, is characterized in that: described exhaust column (13) is more than or equal to 45 ° with the angle of horizontal plane.
4. Wet sand drying system according to claim 3, is characterized in that: described exhaust column (13) is provided with volume damper (14).
5. Wet sand drying system according to claim 1, it is characterized in that: also comprise deduster (10), described air-introduced machine (9) is communicated with by described deduster (10) with the exhaust outlet of described dryer (11).
6. the Wet sand drying system according to any one of Claims 1 to 5, it is characterized in that: also comprise coal disintegrating machine (2), the discharging opening of described coal feeding bucket (4) is connected with the feeding mouth of described coal disintegrating machine (2), and coal sends into described fluidized bed furnace (6) after described coal disintegrating machine (2) is crushed to the particle size meeting combustion requirements.
7. Wet sand drying system according to claim 6, it is characterized in that: also comprise elevator (1) and coal feeding system (5), the feeding mouth of described elevator (1) is connected with the discharging opening of described coal disintegrating machine (2), the discharging opening of described elevator (1) is connected with the feeding mouth of described coal feeding system (5), and the discharging opening of described coal feeding system (5) is connected with the feeding mouth of described fluidized bed furnace (6).
8. Wet sand drying system according to claim 6, is characterized in that: the link position of the second end of described exhaust column (13) substitutes described coal feeding bucket (4) by described coal disintegrating machine (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310040796.9A CN103090658B (en) | 2013-02-01 | 2013-02-01 | Wet sand oven-dry system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310040796.9A CN103090658B (en) | 2013-02-01 | 2013-02-01 | Wet sand oven-dry system |
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| Publication Number | Publication Date |
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| CN103090658A CN103090658A (en) | 2013-05-08 |
| CN103090658B true CN103090658B (en) | 2015-01-14 |
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| CN201310040796.9A Active CN103090658B (en) | 2013-02-01 | 2013-02-01 | Wet sand oven-dry system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106338069A (en) * | 2016-10-28 | 2017-01-18 | 荆门市格林美新材料有限公司 | Method for performing direct pyrolysis treatment on waste liquid crystal display panels |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2175872Y (en) * | 1993-09-28 | 1994-08-31 | 珠海经济特区神力节能工业公司 | Air classification step-burning boiling kiln |
| JP2005274060A (en) * | 2004-03-25 | 2005-10-06 | Kubota Corp | Wet ash drying device |
| CN202177283U (en) * | 2011-07-04 | 2012-03-28 | 天津市兴顺易达机电设备安装工程有限公司 | Sand drying device of sand for railway locomotive |
| CN102431094A (en) * | 2011-10-24 | 2012-05-02 | 中联重科股份有限公司 | Dry-mixed mortar production system and production method as well as finished product discharging system |
| CN202254712U (en) * | 2011-09-19 | 2012-05-30 | 南京天印科技有限公司 | Energy-saving environment-friendly wet sand drying device used for dry-mixed mortar production line |
| CN202284891U (en) * | 2011-09-14 | 2012-06-27 | 三一重工股份有限公司 | Sand drying system and dry-mixed mortar stirring station |
-
2013
- 2013-02-01 CN CN201310040796.9A patent/CN103090658B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2175872Y (en) * | 1993-09-28 | 1994-08-31 | 珠海经济特区神力节能工业公司 | Air classification step-burning boiling kiln |
| JP2005274060A (en) * | 2004-03-25 | 2005-10-06 | Kubota Corp | Wet ash drying device |
| CN202177283U (en) * | 2011-07-04 | 2012-03-28 | 天津市兴顺易达机电设备安装工程有限公司 | Sand drying device of sand for railway locomotive |
| CN202284891U (en) * | 2011-09-14 | 2012-06-27 | 三一重工股份有限公司 | Sand drying system and dry-mixed mortar stirring station |
| CN202254712U (en) * | 2011-09-19 | 2012-05-30 | 南京天印科技有限公司 | Energy-saving environment-friendly wet sand drying device used for dry-mixed mortar production line |
| CN102431094A (en) * | 2011-10-24 | 2012-05-02 | 中联重科股份有限公司 | Dry-mixed mortar production system and production method as well as finished product discharging system |
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| CN103090658A (en) | 2013-05-08 |
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