CN106440743A - Low-rank coal vibration separation drying device and method - Google Patents
Low-rank coal vibration separation drying device and method Download PDFInfo
- Publication number
- CN106440743A CN106440743A CN201611086411.2A CN201611086411A CN106440743A CN 106440743 A CN106440743 A CN 106440743A CN 201611086411 A CN201611086411 A CN 201611086411A CN 106440743 A CN106440743 A CN 106440743A
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- Prior art keywords
- sieve
- sieve plate
- coal
- aperture
- raw coal
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/26—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by reciprocating or oscillating conveyors propelling materials over stationary surfaces; with movement performed by reciprocating or oscillating shelves, sieves, or trays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- 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
- F26B21/003—Supply-air or gas filters
Abstract
The invention discloses a low-rank coal vibration separation drying device and method, and belongs to the technical field of drying devices. The device comprises a rack, a box, a feeding opening, hot smoke inlets, an air flow disperser, a vibration exciter, a motor, a connecting shaft, a large-sieve-pore sieve plate, a medium-sieve-pore sieve plate, a small-sieve-pore sieve plate, a suspension spring, discharging openings, gas and dust removing negative-pressure devices and gas-solid separators. After entering the box from the feeding opening, raw coal drops on a sieve surface, wherein the sieve surface is arranged at a dip angle of 5-15 degrees, the aperture of the sieve surface is progressively increased from the feeding opening to the discharging openings, the raw coal is vibrated under the effect of the vibration exciter, and the raw coal on the sieve surface is mixed and is classified. Meanwhile, after passing through the air flow disperser, hot smoke enters the box and dries raw coal with different particle sizes, after being sieved, the completely dried raw coal enters the discharging openings, after passing through the gas and dust removing negative-pressure devices, gas and dust enter the gas-solid separators, therefore, classified drying of particles with different granularities is realized, and problems that coarse particles are dried insufficiently and fine particles are over-dried are avoided.
Description
Technical field
The present invention relates to a kind of low-order coal drying equipment method, especially one kind are applied to raising low-order coal burning in boiler
Low-order coal vibration separation drying equipment and method.
Background technology
Low-order coal is cheap, but water content is generally between 30%～60%.The low-order coal of high water content is in boiler
During burning, the moisture that 20%～25% combustion heat is used for evaporating in coal leads to boiler thermal output low.Additionally, water content is higher
Coal freezeout can be caused due to low temperature in transportation.Therefore, in order to improve low-order coal utilization ratio and expand its should
Be devoted to studying low-order coal drying equipment with, each research institution, con-ventional drying equipment by the low-order coal of different-grain diameter with certain
The dry gas of temperature directly mix contact drying, because low-order coal particle diameter difference is larger, drying to completely time, from
And lead to coarse granule that not enough, fine grained over-drying or even be pyrolyzed problem is dried, cause system potential safety hazard simultaneously.
Content of the invention
Technical problem：The purpose of the present invention is to overcome weak point of the prior art, provides that a kind of structure is simple, operation
Low-order coal vibration separation that is convenient, improving boiler thermal output, solve the problems such as low-order coal index of aridity is low, sample is heated uneven is done
Dry equipment.
Technical scheme：For achieving the above object, the low-order coal vibration separation drying equipment of the present invention, including frame, casing,
Charging aperture, heat smoke air inlet, air-flow disperser, vibrator, motor, connecting shaft, sieve plate, pendulum spring, discharge gate, degasification
Dedusting negative pressure device, gas-solid separator；Described casing is located in frame, and the low-order coal raw coal that is sequentially arranged above of casing feeds
Mouth, heat smoke air inlet and air-flow disperser；It is provided with the sieve plate fixing through pendulum spring, in the middle part of the casing on sieve plate top in casing
It is provided with vibrator, being connected with the motor being located in frame of vibrator in space, drive vibrator to produce exciting by motor
Power, is provided with connecting shaft between vibrator and sieve plate；Described sieve plate is successively by big mesh screen plate, middle sieve aperture sieve plate and little mesh screen
Plate is formed by connecting；It is located at being respectively arranged below with of different sieve aperture sieve plates and collect the discharge gate that size fractionated is dried raw coal, in discharge
The side of mouth is provided with degasification dedusting negative pressure device,.Gas and dust granules tentatively complete to be dried under suction function raw coal with
Enter after the separation of fuel gas and dust after gas-solid separator is processed and discharge.
The aperture of described big mesh screen plate, middle sieve aperture sieve plate and little sieve aperture sieve plate is respectively：25mm, 13mm and 6mm.
It is welded between described big mesh screen plate, middle sieve aperture sieve plate and little sieve aperture sieve plate, the inclination angle of different sieve plates is at 5 °
Between～15 °, the inclination angle of sieve plate is from charging aperture to successively decreasing at the inclination angle of discharge gate.
Described big mesh screen plate, middle sieve aperture sieve plate and little sieve aperture sieve plate are provided with the card of the differing heights being conveniently replaceable compass screen surface
Groove.
Described heat smoke air inlet is multiple.
Filter screen is installed, to avoid the discharge to bulky grain raw coal between described degasification dedusting negative pressure device and discharge gate
Impact.
Using the low-order coal vibration separation drying meanss of the said equipment, comprise the steps：
A. using power plant boiler burning heat smoke through being provided with air-flow disperser multiple heat smoke air inlets equal
In the even casing of entrance vibration separation drying equipment；
B. by moisture be 30%～60%, granularity is the low-order coal raw coal less than 100mm, from charging aperture feed, heat
Flue gas is contacted with raw coal and carries out preliminarily dried to raw coal；
C., when raw coal is dropped on the sieve plate being connected with vibrator, raw coal, in the presence of exciting force, forms mixed flow stream
The state changed, accelerates the exchange of gas and little particle heat and mass, little particle raw coal is rapidly reached drying regime, through 6mm hole
The little sieve aperture sieve plate (11) in footpath enters the discharge gate below little sieve aperture sieve plate；Completely middle granule and big is not up to dried on compass screen surface
Granule raw coal moves along the sieve plate at 5 °～15 ° of inclination angles to middle sieve aperture sieve plate in the presence of exciting force；In middle particulate coal landing
During on middle sieve aperture sieve plate, proceed Mass and heat transfer between granule and heat smoke, central particulate coal falls in middle sieve aperture
When on sieve plate, be dried more completely particulate coal rapidly pass through 13mm aperture middle sieve aperture sieve plate enter in below sieve aperture sieve plate
Discharge gate；The raw coal of big granularity continues to move to big mesh screen plate, and final bulky grain raw coal passes through the big sieve aperture in 25mm aperture
Sieve plate enters the discharge gate below big mesh screen plate；And on sieve plate be more than 25mm be dried more completely raw coal enter in sieve plate end
Enter discharge gate.
The temperature of described heat smoke is less than 300 DEG C, and the flow of heat smoke sets according to the requirement of specific coal sample and sample
Fixed.
The temperature of described multiple heat smoke air inlets can be adjusted according to the situation that raw coal is dried.
Beneficial effect, due to adopting technique scheme, the present invention low-order coal raw coal is dried it is achieved that be dried
It is carried out continuously, improves dry efficiency, it is to avoid due to when high-temperature gas and coarse granule drying time are not enough, fine grained is dried
Between the long problem causing.Lead to granule motion gradually to slow down because screen angle successively decreases from charging aperture to discharge gate, fully make
Coarse granule raw material is contacted with heat smoke it is ensured that the drying of coarse granule raw material is complete.Solve traditional low-order coal index of aridity low,
The low-order coal vibration separation drying equipment of the problems such as sample is heated uneven.Its major advantage has：
1., under exciting force effect, granule assumes a kind of mixed flow state, granule and heat smoke be fully contacted it is ensured that
The being heated evenly property of grain, fine grained passes through different sieve apertures and discharges, it is to avoid fine grain cross heated drying, improve dry run
In safety；
2. achieve the seriality of charging in low-order coal dry run, and dried raw coal is classified, increased
While equipment treating capacity, upgrading is carried out to raw coal；
3. it is provided with multiple heat smoke air inlets above the casing of equipment, thus can be adjusted according to the drying regime of raw coal
The intake air temperature of flue gas, flow, thus improving the utilization rate of energy, reduce the useless energy consumption in dry run；
4. stream flow velocity in casing for the low-order coal is mainly determined jointly by exciting force and exciting force direction and sieve plate angle
Fixed, thus, can ensure that coarse grained drying is complete by adjusting stream flow velocity.
Brief description
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the schematic diagram of the sieve-plate structure of the present invention.
In figure：1- frame；2- casing；3- charging aperture；4- heat smoke air inlet；5- air-flow disperser；6- vibrator；7- electricity
Motivation；8- connecting shaft；9- big mesh screen plate；Sieve aperture sieve plate in 10-；11- little sieve aperture sieve plate；12- pendulum spring；13- discharge gate；
14- degasification dedusting negative pressure device；15- gas-solid separator.
Specific embodiment
The invention will be further described for embodiment in below in conjunction with the accompanying drawings：
The low-order coal vibration separation drying equipment of the present invention, mainly by frame 1, casing 2, charging aperture 3, heat smoke air inlet
4th, air-flow disperser 5, vibrator 6, motor 7, connecting shaft 8, sieve plate, pendulum spring 12, discharge gate 13, degasification dedusting negative pressure dress
Put 14, gas-solid separator 15 to constitute；Described casing 2 is located in frame 1, and the low-order coal raw coal that is sequentially arranged above of casing 2 enters
Material mouth 3, heat smoke air inlet 4 and air-flow disperser 5；Described heat smoke air inlet 4 is multiple, and in figure show 5, can root
According to it needs to be determined that number.According to the situation that raw coal is dried, can adjust the temperature of the heat smoke passing through in each heat smoke air inlet.
It is provided with the sieve plate fixing through pendulum spring 12 in casing 2, in casing 2 central space on sieve plate top, be provided with vibrator 6, vibrator
6 be connected with the motor 7 being located in frame, drives vibrator 6 to produce exciting force by motor 7, between vibrator 6 and sieve plate
It is provided with connecting shaft 8；Described sieve plate is welded by big mesh screen plate 9, middle sieve aperture sieve plate 10 and little sieve aperture sieve plate 11 successively, no
With sieve plate inclination angle between 5 °～15 °, the inclination angle of sieve plate is from charging aperture to successively decreasing at the inclination angle of discharge gate.Described big mesh screen
The aperture of plate 9, middle sieve aperture sieve plate 10 and little sieve aperture sieve plate 11 is respectively：25mm, 13mm and 6mm, big mesh screen plate 9, middle sieve aperture
Sieve plate 10 and little sieve aperture sieve plate 11 are provided with the draw-in groove of the differing heights being conveniently replaceable compass screen surface.It is located at the lower section of different sieve aperture sieve plates
It is respectively equipped with and collects the discharge gate 13 that size fractionated is dried raw coal, in the side of discharge gate 13, degasification dedusting negative pressure device is installed
14, between degasification dedusting negative pressure device 14 and discharge gate 13, filter screen is installed, to avoid causing shadow to the discharge of bulky grain raw coal
Ring.Gas and dust granules tentatively complete raw coal with fuel gas and dust separated after entrance gas-solid separator is dried under suction function
Discharge after 15 process.
The low-order coal vibration separation drying meanss of the present invention, comprise the steps：
A. using power plant boiler burning heat smoke through being provided with air-flow disperser multiple heat smoke air inlets 4 equal
In the even casing 2 of entrance vibration separation drying equipment；The temperature of described heat smoke is less than 300 DEG C, the flow root of heat smoke
Requirement according to specific coal sample and sample sets；The temperature of multiple heat smoke air inlets 4 can be carried out according to the situation that raw coal is dried
Adjustment；
B. by moisture be 30%～60%, granularity is the low-order coal raw coal less than 100mm, from charging aperture feed, heat
Flue gas is contacted with raw coal and carries out preliminarily dried to raw coal；
C., when raw coal is dropped on the sieve plate being connected with vibrator, raw coal, in the presence of exciting force, forms mixed flow stream
The state changed, accelerates the exchange of gas and little particle heat and mass, little particle raw coal is rapidly reached drying regime, through 6mm hole
The little sieve aperture sieve plate 11 in footpath enters the discharge gate below little sieve aperture sieve plate；Completely middle granule and big are not up to dried on compass screen surface
Grain raw coal moves along the sieve plate at 5 °～15 ° of inclination angles to middle sieve aperture sieve plate 10 in the presence of exciting force.In middle particulate coal landing
During on middle sieve aperture sieve plate, proceed Mass and heat transfer between granule and heat smoke, central particulate coal falls in middle sieve aperture
When on sieve plate, be dried more completely particulate coal rapidly pass through 13mm aperture middle sieve aperture sieve plate 10 enter under sieve aperture sieve plate
The discharge gate of side；The raw coal of big granularity continues to move to big mesh screen plate 9, and final bulky grain raw coal passes through the shaker screen in 25mm aperture
Hole sizer plate 9 enters the discharge gate below big mesh screen plate；And on sieve plate be more than 25mm be dried more completely raw coal sieve plate end
End enters discharge gate.
Claims (9)
1. a kind of low-order coal vibration separation drying equipment it is characterised in that：It include frame (1), casing (2), charging aperture (3),
Heat smoke air inlet (4), air-flow disperser (5), vibrator (6), motor (7), connecting shaft (8), sieve plate, pendulum spring
(12), discharge gate (13), degasification dedusting negative pressure device (14), gas-solid separator (15)；Described casing (2) is located at frame (1)
On, casing (2) be sequentially arranged above low-order coal raw coal charging aperture (3), heat smoke air inlet (4) and air-flow disperser (5)；Case
It is provided with the sieve plate fixing through pendulum spring (12) in body (2), in casing (2) central space on sieve plate top, be provided with vibrator (6),
Vibrator (6) is connected with the motor (7) being located in frame (1), drives vibrator (6) to produce exciting force by motor (7), swashs
The device (6) that shakes is provided with connecting shaft (8) and sieve plate between；Described sieve plate successively by big mesh screen plate (9), middle sieve aperture sieve plate (10) and
Little sieve aperture sieve plate (11) is formed by connecting；It is located at being respectively arranged below with of different sieve aperture sieve plates and collect the row that size fractionated is dried raw coal
Material mouth (13), is provided with degasification dedusting negative pressure device (14) in the side of discharge gate (13), and gas and dust granules are made in negative pressure
Tentatively complete raw coal with fuel gas and dust separated after entrance gas-solid separator (15) process after discharge is dried with lower.
2. a kind of low-order coal vibration separation drying equipment according to claim 1 it is characterised in that：Described big mesh screen
The aperture of plate (9), middle sieve aperture sieve plate (10) and little sieve aperture sieve plate (11) is respectively：25mm, 13mm and 6mm.
3. a kind of low-order coal vibration separation drying equipment according to claim 1 and 2 it is characterised in that：Described big sieve aperture
Be welded between sieve plate (9), middle sieve aperture sieve plate (10) and little sieve aperture sieve plate (11), the inclination angle of different sieve plates 5 °～15 ° it
Between, the inclination angle of sieve plate is from charging aperture to successively decreasing at the inclination angle of discharge gate.
4. a kind of low-order coal vibration separation drying equipment according to claim 1 and 2 it is characterised in that：Described big sieve aperture
Sieve plate (9), middle sieve aperture sieve plate (10) and little sieve aperture sieve plate (11) are provided with the draw-in groove of the differing heights being conveniently replaceable compass screen surface.
5. a kind of low-order coal vibration separation drying equipment according to claim 1 it is characterised in that：Described heat smoke enters
QI KOU (4) is multiple.
6. a kind of low-order coal vibration separation drying equipment according to claim 1 it is characterised in that：Described degasification dedusting
Between negative pressure device (14) and discharge gate (13), filter screen is installed, to avoid the discharge of bulky grain raw coal is impacted.
7. a kind of usage right requires the low-order coal vibration separation drying meanss of equipment described in 1 it is characterised in that including following walking
Suddenly：
A. through the multiple heat smoke air inlets (4) being provided with air-flow disperser uniformly using the heat smoke of power plant boiler burning
Entrance vibration separation drying equipment casing (2) in；
B. by moisture be 30%～60%, granularity is the low-order coal raw coal less than 100mm, from charging aperture feed, heat smoke
Contact with raw coal and preliminarily dried is carried out to raw coal；
C., when raw coal is dropped on the sieve plate being connected with vibrator, raw coal, in the presence of exciting force, forms mixed flow fluidisation
State, accelerates the exchange of gas and little particle heat and mass, little particle raw coal is rapidly reached drying regime, through 6mm aperture
Little sieve aperture sieve plate (11) enters the discharge gate below little sieve aperture sieve plate；Completely middle granule and bulky grain are not up to dried on compass screen surface
Raw coal sieve plate along 5 °～15 ° of inclination angles in the presence of exciting force moves to middle sieve aperture sieve plate (10)；In middle particulate coal landing
During on middle sieve aperture sieve plate, proceed Mass and heat transfer between granule and heat smoke, central particulate coal falls in middle sieve aperture
When on sieve plate, be dried more completely particulate coal rapidly pass through 13mm aperture middle sieve aperture sieve plate (10) enter in sieve aperture sieve plate
The discharge gate of lower section；The raw coal of big granularity continues to move to big mesh screen plate (9), and final bulky grain raw coal passes through 25mm aperture
Big mesh screen plate (9) enters the discharge gate below big mesh screen plate；And on sieve plate be more than 25mm be dried more completely raw coal exist
Sieve plate end enters discharge gate.
8. a kind of low-order coal vibration separation drying meanss according to claim 7 it is characterised in that：Described heat smoke
Temperature is less than 300 DEG C, and the flow of heat smoke sets according to the requirement of specific coal sample and sample.
9. a kind of low-order coal vibration separation drying meanss according to claim 7 it is characterised in that：Described multiple hot cigarette
The temperature of gas air inlet (4) can be adjusted according to the situation that raw coal is dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611086411.2A CN106440743A (en) | 2016-11-30 | 2016-11-30 | Low-rank coal vibration separation drying device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611086411.2A CN106440743A (en) | 2016-11-30 | 2016-11-30 | Low-rank coal vibration separation drying device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106440743A true CN106440743A (en) | 2017-02-22 |
Family
ID=58224020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611086411.2A Pending CN106440743A (en) | 2016-11-30 | 2016-11-30 | Low-rank coal vibration separation drying device and method |
Country Status (1)
| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677104A (en) * | 2017-11-01 | 2018-02-09 | 无锡宇能选煤机械厂 | The Spiral classfier of drying baker drying wet adhesive material is installed |
| WO2022188179A1 (en) * | 2021-03-12 | 2022-09-15 | 方甡 | Drying device |
| CN115355702A (en) * | 2022-08-15 | 2022-11-18 | 浙江森林生物科技有限公司 | Drying equipment and method for bamboo powder raw material for degradable product |
| CN115355702B (en) * | 2022-08-15 | 2024-04-23 | 浙江森林生物科技有限公司 | Drying equipment and method for bamboo powder raw material for degradable product |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677104A (en) * | 2017-11-01 | 2018-02-09 | 无锡宇能选煤机械厂 | The Spiral classfier of drying baker drying wet adhesive material is installed |
| WO2022188179A1 (en) * | 2021-03-12 | 2022-09-15 | 方甡 | Drying device |
| CN115355702A (en) * | 2022-08-15 | 2022-11-18 | 浙江森林生物科技有限公司 | Drying equipment and method for bamboo powder raw material for degradable product |
| CN115355702B (en) * | 2022-08-15 | 2024-04-23 | 浙江森林生物科技有限公司 | Drying equipment and method for bamboo powder raw material for degradable product |
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Application publication date: 20170222 |