CN105423731B - Coal slime dewatering drying equipment and method - Google Patents
Coal slime dewatering drying equipment and method Download PDFInfo
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- CN105423731B CN105423731B CN201510852864.0A CN201510852864A CN105423731B CN 105423731 B CN105423731 B CN 105423731B CN 201510852864 A CN201510852864 A CN 201510852864A CN 105423731 B CN105423731 B CN 105423731B
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- coal slime
- conveyer belt
- baking room
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- 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
- F26B17/02—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces
- F26B17/04—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces the belts being all horizontal or slightly inclined
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- 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
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/08—Granular materials
Abstract
The invention discloses a kind of coal slime dewatering drying equipment and methods, coal slime conveying device, air-heater and negative-pressure air fan including baking room and in baking room, coal slime conveying device includes multiple from top to bottom in the conveyer belt of arrangement in a zigzag, vibration charger is equipped with above the coal slurry inlet end of the conveyer belt of coal slime conveying device top layer, feeding seal door is offered at the top of baking room；Funnel is equipped with out below the coal slime port of export of the undermost conveyer belt of coal slime conveying device, baking room bottom offers discharging hermatic door, the top of baking room is provided with negative-pressure air fan, lead to big air lock door with hot wind, the lower part of baking room is provided with air-heater, hot water entrance etc., the upper portion side wall of baking room offer hot wind and lead to big air lock door, further include the coal slime dewatering furnace drying method applied to above equipment.The present invention has energy-saving and environmental protection, the advantageous effect that high efficiency drying temperature is low, speed is fast, efficient while simple in structure, floor space is small.
Description
Technical field
The present invention relates to coal slime drying fields, are specifically a kind of coal slime dewatering drying equipment and method.
Background technology
At present, the coal slime water content on production line Jing Guo press filtration is about 22%；Traditional coal slime drying is with 800 degree
Hot wind blows over coal slime and is allowed to be dehydrated, this high-temperature hot-air coal slime drying technology for having continued to use decades there are the problem of be dust and
Pernicious gas is extremely difficult to environmental protection standard.
According to the law of thermodynamics, the heat of vaporization of water is reduced with the rising of temperature.The specific heat ratio solid of water is much bigger, institute
To be lost more than gain with raising water temperature to reduce heat of vaporization come vaporization water.
Such as：The heat of vaporization of water at 55 degree, 85 degree and 100 degree respectively 2366.4KJ/kg, 2295.2KJ/kg and
2258.4KJ/kg, the vaporization thermal difference of water is 71.2KJ and 36.8KJ/kg during these three temperature；But 1kg water is risen by 55 degree
The heat difference of height to 85 and 100 degree of needs is 126KJ and 63KJ.It can be seen that improve vapourizing temperature reduce reduce heat of vaporization be no
Mistake is repaid, therefore, low-temperature vaporization is more energy saving.It the particularly important is：For coal slime drying, our purpose is partially dehydrated
(for example being dehydrated 7-8%) rather than completely drying, therefore improve temperature and undoubtedly waste very big heat and go to heat and all contain
The coal slime of water, this is clearly mistake！
From the point of view of environmental protection, the environmental benefit that low-temperature vaporization comes for the material web containing harmful components is can not to replace
Generation.
Existing low temperature drying technology is all dry using source heat pump heat (55-65 degree).The efficiency ratio of heat pump is very high, generally
It is a kind of novel energy to be attained by 360-560%.But for coal slime dewatering, only by 55 degree of hot winds, its dehydration is imitated
Rate is limited.
The content of the invention
The purpose of the present invention is to solve the shortcomings of the above background art and to propose a kind of drying temperature is low, speed
Soon, the coal slime dewatering drying equipment efficient while simple in structure, floor space is small.
In order to achieve the goal above, a kind of coal slime dewatering drying equipment provided by the invention, including baking room and arranged on baking
Coal slime conveying device in stove room, it is characterised in that：The coal slime conveying device includes multiple from top to bottom in arrangement in a zigzag
Conveyer belt, one end of the conveyer belt is coal slurry inlet end, and the other end of conveyer belt is the coal slime port of export, the conveyer belt
The coal slime port of export is correspondingly arranged at and the coal slurry inlet end of conveyer belt adjacent below top, and the coal slime of the conveyer belt enters
The upright position at mouthful end is higher than the coal slime port of export of conveyer belt, multiple conveyer belts are whole form on the vertical plane one it is complete it
Font coal slime conveying device, the coal slurry inlet end top of the conveyer belt of the coal slime conveying device top layer are equipped with vibration charging
Machine, the position of the corresponding vibration charger in baking room top offer feeding seal door；The coal slime conveying device lowest level
Conveyer belt the coal slime port of export below be equipped with out funnel, the position that the baking room bottom corresponds to out funnel offers out
Expect hermatic door, the top of the baking room is provided with negative-pressure air fan, and side wall offers hot wind and leads to big air lock door, the lower part of baking room
It is provided with air-heater.
As the preferred embodiment of the present invention, the conveyer belt includes conveyer belt heating part and feed drive part, conveying
It is the long box of a rectangular tight with heating part, the both sides at both ends are respectively equipped with the inlet and outlet and heat-exchanger pump of disengaging fluid
Connection, the upper surface of long box is that heat-conducting plate conducts heat to coal slime；Feed drive part is that one-way pushing is equipped with above long box
Dynamic device, pushing meanss include more push rods, are equipped at intervals with a plurality of transverse baffle, transverse baffle along its length on long box
On be evenly distributed with pilot hole of the circular hole identical with the number of push rod as push rod, uniformly set along its length on every push rod
Put pawling for multiple one-directional rotations, one end connection push rod cylinder of the push rod.
Further, the interior corner of the conveyer belt has been horizontally disposed with wind deflector, one end of the wind deflector and conveying
Gap is equipped between the interior turning of band, the other end of wind deflector is fixed on the inner wall of baking room.
Further, it is respectively equipped in the baking room at feeding seal door and at discharging hermatic door wet
Degree meter and thermometer.
Yet further, it is equipped with thermometer in the long box of the conveyer belt.
A kind of coal slime dewatering furnace drying method applied to above equipment, which is characterized in that include the following steps：
Step 1：Feeding seal door is opened, coal slime to be dried is poured into from feeding seal door in vibration charger, coal slime
Uniformly fallen on the conveyer belt of top layer by vibrating charger, coal slime is moved from coal slurry inlet end to the coal slime port of export up to falling
It drops down onto on the adjacent conveyer belt of lower floor, coal slime to be dried closes vibration charger and feeding seal after being covered with all conveyer belts
Door,
Step 2：Start air-heater and heat-exchanger pump, open hot wind and lead to big air lock door, air in baking room is heated, together
When conveyer belt is heated, hot wind is blown into from the bottom of baking room, is oriented to by wind deflector, againsts conveyer belt in a zigzag to upstream
It is dynamic, heating, drying is carried out to the surface of coal slime, while heat pump adds it high temperature fluid by importing and exporting to inject in long box
Heat, long box transfer heat to coal slime bottom, and such coal slime is subject to dual-heated heating moisture evaporation, and last hot wind is with humidity
Air lead to big air lock door loss from hot wind,
Step 3：When baking room temperature or coal slime temperature are close to hot blast temperature, it is believed that the vapor in baking room approaches
At this moment saturation state, closes air-heater and hot wind leads to big air lock door, open negative-pressure air fan and extract damp-heat air in baking room, hold
It is 180-300 seconds continuous, until air pressure is 0.4-0.8 atmospheric pressure in baking room, the water content of coal slime is constantly tested during this, if
Coal slime water content still cannot reach requirement and then stop negative-pressure air fan immediately and repeat step 2 and step 3 until coal slime after 300 seconds
Water content reach requirement,
Step 4：After the water content of coal slime reaches requirement, negative-pressure air fan, air-heater and heat-exchanger pump are closed, opens discharging sealing
Door starts conveyer belt, and coal slime is made to be slid from the coal slime port of export of undermost conveyer belt to going out in funnel, collects to dry and complete
Coal slime.
Further, step 5 is further included：Mutually spliced by multiple baking rooms, step 1 is repeated several times to step 3 until coal
Mud water content reaches requirement.
By the present invention in that air pressure in baking room is down to below an atmospheric pressure with negative-pressure air fan, greatly accelerate same
The evaporation rate of moisture Deng at a temperature of.Meanwhile zigzag arrangement mode of the conveyer belt in solid space is considerably reduced and set
The evaporation surface of coal slime moisture content is increased in the case of standby floor space so as to shorten drying time, improves drying effect
Fruit.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the long box structure diagram of conveyer belt.
Fig. 3 is to pawl and push rod connection diagram.
Fig. 4 is the stereogram of Fig. 3.
Fig. 5 stretches out usage state diagram for push rod.
Fig. 6 is pusher retracted usage state diagram.
Fig. 7 is wind deflector action principle figure.
In figure：Baking room 1, feeding seal door 1.1, discharging hermatic door 1.2, hot wind lead to big air lock door 1.3, conveyer belt 2, length
Box 2.1, push rod 2.2, transverse baffle 2.3, circular hole 2.4,2.5, push rod cylinder 2.6 of pawling, inlet and outlet 2.7, clamping plate 2.8 of pawling,
Rotation axis of pawling 2.9, vibration charger 3 go out funnel 4, negative-pressure air fan 5, air-heater 6, wind deflector 7, heat-exchanger pump 8.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments.
Embodiment：A kind of coal slime dewatering drying equipment as shown in Figure 1, the coal including baking room 1 and in baking room 1
Mud conveying device, the coal slime conveying device include multiple from top to bottom in the conveyer belt 2 of arrangement in a zigzag, the conveyer belt 2
One end for coal slurry inlet end, the other end of conveyer belt 2 is the coal slime port of export, and the coal slime port of export correspondence of the conveyer belt 2 is set
Put with the coal slurry inlet end of adjacent conveyer belt 2 below above, and the upright position at the coal slurry inlet end of the conveyer belt 2
Higher than the coal slime port of export of conveyer belt 2, multiple conveyer belts 2 are whole to form a complete zigzag coal slime conveying on the vertical plane
Device, the coal slurry inlet end top of the conveyer belt 2 of the coal slime conveying device top layer are equipped with vibration charger 3, the drying
The position of the corresponding vibration charger 3 in 1 top of room offers feeding seal door 1.1；The undermost conveying of coal slime conveying device
With funnel 4 is equipped with out below the 2 coal slime port of export, the position that 1 bottom of baking room corresponds to out funnel 4 offers discharging
Hermatic door 1.2, the top of the baking room 1 is provided with negative-pressure air fan 5 and the hot wind of side wall leads to big air lock door 1.3, baking room 1
Lower part is provided with air-heater 6 and heat-exchanger pump.The interior corner of the conveyer belt 2 has been horizontally disposed with wind deflector 7, the wind deflector 7
One end and conveyer belt 2 interior turning between be equipped with gap, the other end of wind deflector 7 is fixed on the inner wall of baking room 1.It is described
In baking room 1 hygrometer and thermometer are respectively equipped at feeding seal door 1.1 and at discharging hermatic door 1.2.Institute
It states and thermometer is equipped in the long box 2.1 of conveyer belt 2.
The conveyer belt 2 includes 2 heating part of conveyer belt and feed drive part, and 2 heating part of conveyer belt is a square
The closed long box 2.1 of shape, the both sides at both ends are respectively equipped with the inlet and outlet 2.7 of disengaging fluid and high temperature fluid gas or liquid
Body heat source connects, and long 2.1 upper surface of box is heat-conducting plate, in order to transfer heat to coal slime.The heat-conducting plate upper surface
There are transverse baffle 2.3 in both sides, are uniformly provided on transverse baffle 2.3 multiple for fixed circular hole 2.4.Circular hole 2.4 can be used as
Conveyer belt 2 is fixed on surrounding or for fixing feed drive part.Feed drive part is that list is equipped with above long box 2.1
To pushing meanss, the unidirectional pushing meanss include more push rods 2.2, and the lower section of every push rod 2.2 is uniformly set along its length
That puts multiple one-directional rotations pawls 2.5, and the 2.2 horizontal both sides of push rod are vertically equipped with 2.5 clamping plates of pawling, under push rod 2.2
It is equipped with and pawls 2.5 rotation axis between 2.5 clamping plates of pawling of square both sides, 2.5 top of pawling is hinged with rotation axis, described to push away
The top surface of pawl 2.5 corresponds to the one side of rotation axis position as cambered surface, and 2.5 top surface of pawling corresponds to rotation axis position
Opposite side for plane, the bottom of the push rod 2.2 and 2.5 top surface of pawling be bondeds, and one end of the push rod 2.2, which connects, to be driven
Device.The course of work of conveyer belt 2 is：Such as Fig. 5, push rod 2.2 stretches out, since the horizontal plane for 2.5 top surfaces of pawling is made to /V
It with stopping its rotation, therefore pawls and 2.5 can be kept upright and state and moved with push rod 2.2, material is promoted to move together.Such as
Fig. 6 after 2.2 1 strokes of push rod, will reversely retract, and at this time due to the stop of material, pawl 2.5 around pawling 2.5 turns
Moving axis one-directionally rotates, and guiding role is played in the bottom of the cambered surface fitting push rod 2.2 for 2.5 top surfaces of pawling at this time, and material is kept at this time
Motionless and 2.5 one-directional rotations of pawling.The reciprocating motion of push rod 2.2 enables the material coal slime below this group of push rod 2.2 to be pushed away
The feed end of pawl 2.5 from long box 2.1 is moved to discharge end.
The present invention the course of work be：
Step 1：Feeding seal door 1.1 is opened, coal slime to be dried is poured into vibration charger 3 from feeding seal door 1.1
In, coal slime is uniformly fallen on the conveyer belt 2 of top layer by vibrating charger 3, and coal slime is from coal slurry inlet end to the coal slime port of export
Until falling on the adjacent conveyer belt 2 of lower floor, coal slime to be dried closes vibration charger after being covered with all conveyer belts 2 for movement
3 and feeding seal door 1.1.
Step 2：Start air-heater 6 and heat-exchanger pump 8, open hot wind and lead to big air lock door 1.3, air in baking room 1 is carried out
Heating, while conveyer belt 2 is heated, hot wind is blown into from the bottom of baking room 1, is oriented to by wind deflector 7, is against conveyer belt 2 and is in
It flows up in a zigzag, heating, drying is carried out to the surface of coal slime, while high temperature fluid is passed through 2.7 injection of inlet and outlet by heat pump 8
It is heated in long box 2.1, long box 2.1 transfers heat to coal slime bottom, and such coal slime is subject to dual-heated heating water
Divide evaporation, last hot wind leads to big 1.3 loss of air lock door with wet air from hot wind.
Step 3：When 1 temperature of baking room or coal slime temperature are close to hot blast temperature, it is believed that the vapor in baking room 1 connects
At this moment nearly saturation state, closes air-heater 6 and hot wind leads to big air lock door 1.3, open damp and hot in the extraction baking room 1 of negative-pressure air fan 5
Air continues 180-300 seconds, until air pressure is 0.4-0.8 atmospheric pressure in baking room 1, containing for coal slime is constantly tested during this
Water if coal slime water content after 300 seconds still cannot reach requirement stops negative-pressure air fan 5 and repeats step 2 and step immediately
Rapid 3 until the water content of coal slime reaches requirement.
Step 4：After the water content of coal slime reaches requirement, negative-pressure air fan 5, air-heater 6 and heat-exchanger pump 8 are closed, opens discharging
Hermatic door 1.2 starts conveyer belt 2, and the coal slime port of export of coal slime from undermost conveyer belt 2 is made to slide to going out in funnel 4, is received
The coal slime that collection drying is completed, in coal slime drying course, by thermometer and the drying situation of hygrometer Simultaneous Monitoring coal slime, in due course
Flow rate of hot water in 6 temperature of air-heater and long box 2.1 is adjusted, ensures drying effect.
Step 5：Spliced by multiple 1 phases of baking room, step 1 is repeated several times and is wanted to step 3 up to coal slime water content reaches
It asks.
The present invention operation principle be：
Research shows that coal slime dewatering process meets Page equations, basically according to exponential law, since coal slime ingredient is opposite
Simple chemistry or biochemical reaction without complexity relatively simple physical process, with Page equations
MR=exp (- KtN) (formula 1)
With regard to can sufficiently accurate statement, in formula 1：
MR represents water content
K, N represent the parameter related with drying condition
T represents drying time
In general, MR is also denoted as：
(formula 2)
In formula 2：
M is the water content in any time wet feed
Me is the equilibrium moisture content in wet feed
M0For initial moisture content in wet feed.
The final water content M of product can be used under normal circumstancesfInstead of equilibrium moisture content Me, therefore formula 2 can be write as：
(formula 3)
M must be the water content detected in real time.
Some are dried similar to coal slime in grain and sludge, and someone did many experimental studies and developed this respect
Go out Computer Simulation the application of mathematical model and good effect is obtained in production practices.The conclusion that can wherein use for reference is：
1st, page equations can preferably describe aqueous particulate drying process, and water content and time have exponent relation.
2, drying process can substantially be divided into raising speed drying, 3 stages of constant rate of drying and falling-rate periods of drying；Falling-rate period is
The Main Stage of thin layer drying, in typical exponential curve.
3rd, raising speed rank mainly removes the Interstitial Water that mechanical dehydration does not remove, can evaporate the 20%-30% of total moisture.
Existing high temperature coal slurry drying-machine in terms of environmental protection there are it is apparent the defects of certainly will will step down from the stage of history, merely
The exponential curve characteristic of low temperature dewatering the practicality is under suspicion.The present invention utilizes hot-air seasoning technology, in the early stage
After high-efficiency dehydration, switch to negative pressure dehydration at once so that overall dehydration efficiency can improve 1~2 than simple hot-air seasoning
The order of magnitude.With fairly obvious economic benefit and practical value.
In view of the general character of exponential curve, simple hot-air seasoning is mainly surface evaporation effect, the dehydration efficiency in later stage
It is very low without use value, such as：Therefore it is contemplated that adding the link of a negative pressure dehydration.
Negative pressure dehydration rationale be：
Work as 290K<T<There is the relation by Antonic formula during 500K, between the saturated vapor pressure and temperature of water：
Ln (P)=9.3876-3826.36/ (T-45.47) (formula 4)
Corresponding data form can also be found, and when temperature is at 25 degree, 50 degree, 75 degree 80 degree and 90 degree, the saturation of water is steamed
Vapour pressure is respectively：3.1690kpa, 12.344kpa, 38.543kpa, 47.373kpa and 70kpa.
This suggests that us, it is contemplated that the existing appointed condition in market, even negative pressure reaches 47kpa, temperature at least needs
Reach 80 degree of requirements that could meet dewatering speed.It is enough by 70kpa if having reached 90 degree！
Therefore our focus is：Economic negative pressure generator and raising heat pump output temperature.
" negative pressure " must solve the problems, such as：
The problem of so-called " negative pressure " is referred here to less than an atmospheric pressure (0.1MPa), it brings be：
1st, the compressive resistance of baking room and corresponding structure problem.Theoretically, when negative pressure reaches 10kpa or following, dry
Every square metre of stove room outer wall will bear 10 tons of pressure.For wishing large-scale industrial application, equipment investment will be too high.
2nd, the negative-pressure air fan for reaching 10kpa is substantially vacuum pump type, of high cost, and low efficiency is also worthless.Such as
Fruit uses half-way house, and vacuum cavitations then can be ripe peripheral pump in~50kpa.Under 50kpa condition of negative pressure, baking room
The pressure-resistant only 5 tons/square meter of surface level is easier to solve.
The present invention uses the width of baking room 1 as 8 meters, is highly 4 meters, and thickness is 1.4 meters.The present invention is using maximum
50kpa negative pressure, baking room are designed as flat structure, are welded with 1.5mm general steel plates, increase supporting rod on big face and correspond to maximum
5T/M2Pressure, outer wall have wrapped up the polyurethane of 4cm.In addition the space compact arrangement of conveyer belt 2, under the conditions of 50Kp, every square
The pressure that rice is born is 5T/M2.Most negative-pressure air fan is attained by this index, on the thickness direction of baking room, dress
It is 1400mm*40mm*5mm supporting square tubes to have size.
" hot wind " adds " negative pressure " dewatering process：
Low temperature heated-air drying is technique very ripe at present, is especially protected in grain, timber, Chinese medicine and vegetables and fruits
It is fresh etc..On theoretically analyze, simple hot wind for coal slime dry, due to dry exponential curve characteristic, there are one
Efficiency (namely economically feasible sex chromosome mosaicism) is difficult to be received by production scene.
The present invention is realized on the basis of heated-air drying, is in time increased negative pressure dewatering means, is greatly improved coal slime
Drying efficiency.
Compared with prior art, advantage of the invention is embodied in：
1st, coal slime is dried under negative pressure cryogenic conditions, and negative pressure reduces the temperature of moisture evaporation, therefore air-heater need not add
Wen Taigao greatly reduces drying cost.
2nd, coal slime is dried under the conditions of low temperature (100 degree or so), polluted gas is generated and Dust Capacity is few, it is more environmentally-friendly.
3rd, conveyer belt 2 greatly reduces the occupation of land of equipment on an equal basis from top to bottom in arranging in a zigzag in solid space
Under area, the drying for increasing coal slime is highly shortened away from discrete time, promotes drying efficiency.
4th, coal slime bottom is dried by hot water heating, and the top of coal slime is dried by Hot-blast Heating, while is acted on promotion and dried
Dry efficiency.
5th, 1 integral sealing of baking room only adds and collects coal slime by feeding seal door 1.1 and discharging hermatic door 1.2, whole
Body good airproof performance utmostly reduces the loss of heat, more energy saving.
The above described is only a preferred embodiment of the present invention, not the structure of the present invention is done in any form
Limitation.Any simple modification, equivalent change and modification that every technical spirit according to the invention makees above example,
In the range of still falling within technical scheme.
Claims (6)
1. a kind of coal slime dewatering drying equipment, the coal slime conveying device including baking room (1) and in baking room (1) is special
Sign is：The coal slime conveying device includes multiple from top to bottom in the conveyer belt (2) of arrangement in a zigzag, the conveyer belt (2)
One end for coal slurry inlet end, the other end of conveyer belt (2) is the coal slime port of export, the coal slime port of export pair of the conveyer belt (2)
Should be arranged on above the coal slurry inlet end of adjacent conveyer belt (2) below, and the coal slurry inlet end of the conveyer belt (2)
Upright position is higher than the coal slime port of export of conveyer belt (2), multiple conveyer belts (2) are whole form on the vertical plane one it is complete it
Font coal slime conveying device, be equipped with above the coal slurry inlet end of the conveyer belt (2) of the coal slime conveying device top layer vibrate into
Material machine (3), the position of the corresponding vibration charger (3) in baking room (1) top offer feeding seal door (1.1)；The coal
Funnel (4), baking room (1) bottom are equipped with out below the coal slime port of export of the undermost conveyer belt of mud conveying device (2)
The position for corresponding to funnel (4) offers discharging hermatic door (1.2), and the top of the baking room (1) is provided with negative-pressure air fan
(5), side wall offers hot wind and leads to big air lock door (1.3), and the lower part of baking room (1) is provided with air-heater (6)；The conveyer belt
(2) conveyer belt heating part and feed drive part are included, conveyer belt heating part is the long box (2.1) of a rectangular tight,
The both sides at its both ends are respectively equipped with the inlet and outlet (2.7) of disengaging fluid and heat-exchanger pump (8) connection, the upper surface of long box (2.1)
It is that heat-conducting plate conducts heat to coal slime；Feed drive part is that unidirectional pushing meanss are equipped with above long box (2.1), promotes dress
It puts including more push rods (2.2), a plurality of transverse baffle (2.3), transverse gear is equipped at intervals with along its length above in long box (2.1)
It is evenly distributed with pilot hole of the circular hole (2.4) identical with the number of push rod (2.2) as push rod (2.2) on plate (2.3), every
Pawl (2.5) of multiple one-directional rotations, one end connection of the push rod (2.2) are uniformly arranged on push rod (2.2) along its length
Push rod cylinder (2.6).
2. coal slime dewatering drying equipment according to claim 1, it is characterised in that：The interior corner of the conveyer belt (2)
It is horizontally disposed to have wind deflector (7), gap, wind deflector are equipped between one end of the wind deflector (7) and the interior turning of conveyer belt (2)
(7) the other end is fixed on the inner wall of baking room (1).
3. coal slime dewatering drying equipment according to claim 1, it is characterised in that：Close to charging in the baking room (1)
Hygrometer and thermometer are respectively equipped at hermatic door (1.1) and at discharging hermatic door (1.2).
4. coal slime dewatering drying equipment according to claim 1, it is characterised in that：The long box (2.1) of the conveyer belt (2)
It is interior to be equipped with thermometer.
5. a kind of coal slime dewatering furnace drying method applied to equipment described in claim 1, which is characterized in that include the following steps：
Step 1：Feeding seal door (1.1) is opened, coal slime to be dried is poured into vibration charger from feeding seal door (1.1)
(3) in, coal slime is uniformly fallen on the conveyer belt (2) of top layer by vibrating charger (3), and coal slime is from coal slurry inlet end to coal slime
Until fall on the adjacent conveyer belt of lower floor, coal slime to be dried, which is covered with all conveyer belts (2), closes shake afterwards for port of export movement
Dynamic charger (3) and feeding seal door (1.1),
Step 2：Start air-heater (6) and heat-exchanger pump (8), open hot wind and lead to big air lock door (1.3), to baking room (1) interior air
It is heated, while conveyer belt (2) is heated, hot wind is blown into from the bottom of baking room (1), is oriented to, against by wind deflector (7)
Conveyer belt (2) carries out heating, drying in flowing up in a zigzag, to the surface of coal slime, while heat-exchanger pump (8) leads to high temperature fluid
It crosses in the long box (2.1) of inlet and outlet (2.7) injection and it is heated, long box (2.1) transfers heat to coal slime bottom, such coal
Mud is subject to dual-heated heating moisture evaporation, and last hot wind leads to big air lock door (1.3) loss with wet air from hot wind,
Step 3：When baking room (1) temperature or coal slime temperature are close to hot blast temperature, it is believed that the vapor in baking room (1) connects
At this moment nearly saturation state, closes air-heater (6) and hot wind leads to big air lock door (1.3), open negative-pressure air fan (5) and extract baking room
(1) interior damp-heat air continues 180-300 seconds, until baking room (1) interior air pressure is 0.4-0.8 atmospheric pressure, constantly survey during this
The water content of coal slime is tried, stops negative-pressure air fan (5) immediately if coal slime water content after 300 seconds still cannot reach requirement and lays equal stress on
Multiple step 2 and step 3 until the water content of coal slime reaches requirement,
Step 4：After the water content of coal slime reaches requirement, negative-pressure air fan (5), air-heater (6) and heat-exchanger pump (8) are closed, is opened out
Expect hermatic door (1.2), start conveyer belt (2), the coal slime port of export of coal slime from undermost conveyer belt (2) is made to slide to discharging and is leaked
It struggles against in (4), collects the coal slime that drying is completed.
6. coal slime dewatering furnace drying method according to claim 5, which is characterized in that further include step 5：Pass through multiple drying
Room (1) mutually splices, and step 1 is repeated several times to step 3 until coal slime water content reaches requirement.
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| CN106482487A (en) * | 2016-12-15 | 2017-03-08 | 湖北科阳节能设备有限公司 | A kind of automatic type air-energy dryer for corn drying |
| CN106705575B (en) * | 2016-12-21 | 2022-07-22 | 上海永太汽车零部件有限公司 | Spare and accessory oil filtering device |
| JP6367439B1 (en) * | 2017-07-25 | 2018-08-01 | 株式会社西原環境 | Dehumidifying and drying equipment |
| CN107449229A (en) * | 2017-08-18 | 2017-12-08 | 江俊华 | A kind of sludge treatment device of hydraulic engineering environmental protection |
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