CN209541334U - A kind of coal Drying and cooling system - Google Patents
A kind of coal Drying and cooling system Download PDFInfo
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- CN209541334U CN209541334U CN201821278304.4U CN201821278304U CN209541334U CN 209541334 U CN209541334 U CN 209541334U CN 201821278304 U CN201821278304 U CN 201821278304U CN 209541334 U CN209541334 U CN 209541334U
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Abstract
The utility model relates to coal comprehensive utilizations, energy-conserving and emission-cutting technology field, more particularly, to a kind of coal Drying and cooling system, including the first conveying device for conveying raw coal, first conveying device connects drying system, the drying system connects reaction kettle by the first spiral by the second conveying device connection drying feed bin, the drying feed bin；The reaction kettle connects intermediate bunker with the second conveying device by the second spiral, and intermediate bunker connects cooling system by third spiral, and the cooling system connects silo by third conveying device.Structure is simple, equipment investment is few, convenient and practical, energy continuous mass production, and yield and working efficiency can meet high requirement, while energy continuous mass production, without stopping kettle operation.
Description
Technical field
The utility model relates to coal comprehensive utilizations, energy-conserving and emission-cutting technology field, more particularly, to a kind of coal Drying and cooling system
System.
Background technique
Rich coal resources in China, and petroleum, natural gas resource are relatively deficient, it is more than 10,000 that oneself, which verifies coal resources reserves,
Hundred million tons, account for 95% or more of China's fossil energy.Recently as the worsening of the northern area of China atmospheric environment, to reduce
The influence that coal directly burns to environment, while being also the utilization rate for improving coal, classification sub-prime is carried out to coal resources and is utilized
It has been the task of top priority, as the Coal Chemical Engineering Project of state key support.And to low temperature pyrogenation in feed coal progress, obtain high value
Coal gas, coal tar and upgrading product of coal to be coal sub-prime utilize an important means in technology.
It all include the cooling process of upgraded coal in existing a variety of pyrolytic process of coal, this is because being come out from pyrolysis oven
The temperature of upgraded coal be up to 500~600 DEG C, thus need to cool down high temperature upgraded coal.Traditional upgraded coal bosher
There are mainly two types of methods for skill: (1) wet quenching, i.e., direct water-spraying control, then baking is dried to meet user's needs, is put out herein
During coke, the sensible heat of red coke is slatterned with the discharge of steam, can not be recycled, and red coke is contacted with water and can also be generated
Harmful substances, these substances such as a large amount of phenol, cyanogen and sulphur compound would generally freely be discharged with the steam of generation, thus serious rotten
Erosion surrounding devices simultaneously pollute atmosphere；(2) heat is passed through steaming that is, using inert gas and fervid red Jiao Huanre by Dry Quenching
The recyclings such as boiler furnace generate steam, and the inert gas after cooling returns to cooling chamber and forms circulation, although this process is recyclable
Using it is red coke about 83% sensible heat, but complex technical process and equipment requirement it is higher.
Utility model content
For solve the deficiencies in the prior art, the utility model provide a kind of structure is simple, equipment investment is few, side
Just practical, can continuous mass production the advantages that a kind of coal Drying and cooling system, heat exchange drying efficiency is high, yield and working efficiency
High requirement, while energy continuous mass production can be met, without stopping kettle operation.
The purpose of this utility model is reached by following measures: a kind of coal Drying and cooling system, it is characterised in that including
For conveying the first conveying device of raw coal, first conveying device connects drying system, and the drying system passes through
Second conveying device connection drying feed bin, the drying feed bin connect reaction kettle by the first spiral；The reaction kettle is logical
It crosses the second spiral and connects intermediate bunker with the second conveying device, intermediate bunker connects cooling system by third spiral, described
Cooling system connects silo by third conveying device.
The cooling system is lag cooler, and the lag cooler includes inner roller and outer roller, the inner roller and outer
It is cooling-water duct between roller, the inner wall of the inner roller is equipped with the spiral stream guidance blade being spirally distributed.The cold slag
Machine is water cooling cold cinder machine, and roller is made of together inner cylinder, outer cylinder suit, and tubular with thermal expansion section, rotary joint, return water
At closed water cavity.Inner cylinder inner wall is welded with the spiral stream guidance blade and longitudinal blade being spirally distributed, and can lead to the heat of material
It crosses and is transmitted in recirculated cooling water.Cylinder, helical blade and longitudinal blade both participate in heat exchange, improve cooling effect.Spiral shell
Vane piece can play lead, not block up slag, noncoking: spiral is linear motion and the compound motion track of circular motion, can be
Rotation simultaneously promotes material, and compared with this with multiple pipe type cold slag machine relies only on linear advancement, there is no stifled slag and coking are existing
As.Longitudinal blade extends the time of contact of hot material and cylinder, must increase heat exchange area at double, keeps hot material cold burden sufficiently mixed
It closes: increasing longitudinal blade purpose, exactly the hopper for allowing material to be formed with these longitudinal blades can be in the inner wall of rotary drum residence time
It is longer, and can shed, it is sufficiently mixed hot material and cold burden, to preferably cool down, and temperature is uniform after cooling down.
Water cooling cold cinder machine rotation system is set outside the roller by preceding backing ring, rear backing ring, the composition such as support roller, gear wheel, backing ring,
Roller is driven to rotate on four support rollers under driving mechanism driving.The adjustment of roller height can be achieved by the adjustment of support roller,
Cope with the decline of backing ring abrasion back roll height.Gear wheel can limit roller axial displacement.
The driving mechanism by deceleration machine support, cycloidal planetary gear speed reducer, drive sprocket, by movable sprocket and sleeve-barrel roollr
The composition such as chain.Major function is driving roller rotation, pushes material to output flow.
Cooling water system is by Bidirectional rotating joint, cooling water inlet pipe, cooling water outlet pipe, cooling water pipe in lag cooler,
The composition such as metal hose, can take away the material heat of absorption.Wherein Bidirectional rotating joint part will intake, return water is placed in out
Mouth end, it is not only convenient to overhaul, but also safety.
The silo, that is, upgraded coal storage device, for storing the silo of material.Lignite passes through dehydration and removal volatilization
After point, i.e. referred to as upgraded coal, coal partial size is known as smalls 13mm is below, and the Xinjiang surface Nao Maohu is based on smalls.It is described
Silo storehouse bottom structure not only born the weight of material but also need to have material unloading function, therefore generally use infundibulate；Though plate orlop
Simple structure, but fill slope is needed, not only feed consumption but also weight gain, were only applicable to small-sized silo.The volume of silo is depending on production capacity, and one
As for use steel construction.Smalls silo is divided into twin production module and single production module as needed.
Roof scrubber is installed at the top of silo, roof scrubber is a kind of monomer cleaner of automatic ash removing structure,
It is tiny in gas for filtering, the dried dust of non-fiber or a kind of dedusting that dry powder is recycled in process flow
Equipment.Roof scrubber efficiency of dust collection is up to 100%.Funnel-shaped cylindrical shape structure can be selected in silo, and coal partial size is in 10mm or less.
The lag cooler includes preceding backing ring, rear backing ring, support roller, gear ring and its driving mechanism for driving the gear ring.
The reaction kettle and the second spiral is equipped with dynamic and static sealing device and metal compensator.The static and dynamic sealing dress
It sets and is mainly made of gland component, enhancing soft graphite disk, sealed outer ring component with inner shield ring component etc. is sealed.Gland component is
It is welded by flange, seamless steel pipe, pressure ring group.Since the gas that pyrolysis furnace generates during the work time does not have corrosivity, and
The temperature of gas is at 200~400 DEG C or so.So pressure ring assembly is just able to satisfy technique requirement using common carbon structural steel, lead to
It overregulates gland and gos deep into the length of sealed outer ring to realize the adjusting elastic to graphite packing_seal.Metal compensator is as a kind of
Flexible pressure-resistant pipe fitting, using effective dilatation of its operative body bellows, with absorption line, conduit, container etc. by heat expansion
The reasons such as shrinkage and change in size or compensation pipes, conduit, the axial of container etc., transverse direction and the angular displacement generated, absorb vibration
Energy, the effects of capable of playing vibration damping, noise reduction, have flexible, light weight, corrosion-resistant, antifatigue, high-low temperature resistant etc. multinomial
Feature.
The tensile strength that enhancing flexible graphite stuffing not only overcomes pure graphite material is low, flexible soft resilience is poor, gas
The disadvantages such as close property is low；But also there is good heatproof, anti-oxidant, corrosion resistance and preferable compression performance.There are also stones simultaneously
The good characteristic of ink；Therefore sealing element important in pyrolysis furnace and spiral sealing device structure is made of it；Also with its axial direction
Retractility, radial lubricity and its comprehensive performance；
Sealed outer ring component is welded by flange, adapter tube and pressure ring group, and sealing inner shield ring is welded by steel pipe and annulus
It connects；Graphite packing is wrapped among the two, and by friction sealed between three, common cooperation is played radial and axial
Sealing function.The circle number wound in this structure is 8-12 circle.
The rear end static and dynamic sealing linking of the lag cooler has cooling water inlet/outlet pipe.
The drying system includes the roller with driving device, and feeding seal case is arranged in the input end of the roller,
Outlet end setting discharging seal box, the roller are at least level-one.
The intermediate bunker includes two concatenated first intermediate bunkers and the second intermediate bunker, the top of intermediate bunker
For cylindrical structure, lower part is inverted pyramidal structures, and valve is installed in the upper and lower part of two intermediate bunkers respectively.
Intermediate bunker of the invention is divided into the first intermediate bunker and the second intermediate bunker, is also possible to be parallel construction, two
Intermediate bunker structure is just the same, and the form of parallel construction can be such that charging switches at any time, when making material by sufficient buffering
Between and reduce certain temperature.By the second spiral and motor by controlling screw conveyor just above the feed inlet of intermediate bunker
Reversion enters the coal amount of two intermediate bunkers.
Material position instruction device for detecting accumulation of material amount, the bottom of intermediate bunker are installed in the intermediate bunker
It is also equipped with 1~2 hopper wall vibrator.The material position instruction device also issues the signal for controlling the hopper wall vibrator.Installation
The purpose of hopper wall vibrator is exactly to prevent upgraded coal from generating bridge formation, and cavity caused by otherwise building bridge can not make material smoothly fall into the
Three shaftless screws.The signal of hopper wall vibrator can be automatically controlled by material position instruction device remote computer, also may be switched to artificially control
System, specifically depending on field operation situation.
The reaction kettle is Rotatable mechanism, and reaction kettle is externally provided with heater box, and is equipped with leading through the reaction kettle
Heat pipe.The heat conducting pipe is connected to the heater box；The vertical reaction kettle axis arrangement of the heat conducting pipe, and adjacent two heat conducting pipe is vertical
Staggeredly.
It is equipped with inclination arrangement in the reaction kettle and helically the deflector of structure, deflector are divided into water conservancy diversion steel plate and water conservancy diversion
Single coil configuration or double-spiral structure can be used in stainless steel plate, can also single, double combination spiral stream guidance structure；It is revolved in reaction kettle
During turning, the deflector of inclination arrangement has guide functions to the material in reaction kettle, and the material in reaction kettle is in water conservancy diversion
It is mobile to discharge port under the action of plate, accelerate the discharge of material in reactor.
Reaction kettle in the present embodiment is progressive circulating continuous production reaction unit, built-in 6~15 wireless temperatures
Controller, for monitoring the temperature in section, when equipment discharge port temperature does not also reach assigned temperature (500 DEG C~800 DEG C),
Specific temperature is determined that temperature sensor sends computer and alarm device to by signal conveying by different product upgraded coals,
Staff is reminded, this is to illustrate that product does not reach Eligibility requirements also, is at this time taken measures main as follows, reaction kettle can be anti-
Turn, make to be again introduced into reaction kettle near the material of outlet and sufficiently react, extends the residence time, while continuing to heat, reaction kettle is anti-
Turning the time is that 30min~120min is differed, and then reaction kettle rotates forward, and when expecting to enter the first discharge port, sees that temperature sensor is
No alarm so repeats if alarm, reaction kettle invert again, guarantees that product qualification is offline.
The rear end static and dynamic sealing linking of the lag cooler has cooling water inlet/outlet pipe.
First spiral, the second spiral and the third spiral is shaftless screw or has axis helical structure.
The length of the appropriate extension certain distance in helical feed end, extension distance can be according to tank body or feed bin size and material
Depending on the actual effects such as yield.Parallel conveying or certain tilt angle conveying, inclination angle can be used in bottom discharge helical feed
Degree conveying can make material be easier to concentrate on a point, the dead angle of generation only at the end of the transport end, as long as Field Force periodically opens end
End blind plate cleaning can solve the impurity such as the fine coal grain of blocking or dead angle accumulation.
It is because shaftless screw center is a concentric circles preferably, can choose shaftless screw；Two carry out shaftless screw
Use, under unit area, under certain flow rate, in the case where temperature is not high, than there is the material of axis helical feed more, thus
Save the material of round tube；Third is that spiral is shaftless, material is not easy to plug, and discharge gate does not block, thus can be operated compared with low velocity,
Steady transmission, reduces energy consumption；Conveying capacity is 1.5 times that same diameter tradition has screw conveyor shaft；Not only can lower section discharging, but also can
End discharging；Using special liner plate, which can work at high temperature.
First and second conveying devices refer mainly to embedded scraper transporter, by the shell of closed section, flight chain,
The components such as driving device, tensioning apparatus and safety guard composition.Device structure is simple, small in size, good seal performance, installation
It repairs more convenient；Energy feeding raw materials from more than one places, multiple discharge, craft lectotype and arrangement are more flexible；In flying upward property of conveying, toxic, high
When warm, inflammable and explosive material, it can improve working conditions, reduce environmental pollution.Advantage is: 1, having a wide range of application, can transport more
Kind material, high temperature resistant (300 DEG C~400 DEG C), flying upward property is inflammable, the various materials such as explosion hazard.2, technology arrangement is flexible, can water
It is flat, vertically, it is in tilted layout.3, equipment is simple, small in size, and occupied area is small, light-weight, can multiple spot loading and unloading.4, sealing is realized
Conveying, especially suitable for conveying dust, toxic, explosive material is improved working conditions, and prevents pollution environment.It 5, can edge
Liang Ge branch, conveys material in the opposite direction.6, easy for installation, maintenance cost is low.
The beneficial effects of the utility model are embodied in:
(1) drying system of the utility model greatly improves the drying effect of powder coal, greatly reduces subsequent anti-
The energy consumption for answering kettle, because liquid water becomes thousands of times of high-temperature vapor volume of raising, the reduction of moisture is greatly improved subsequent cold
But the unit production capacity of equipment.
(2) the water cooling cold cinder machine cooling water of the utility model uses Bidirectional rotating joint, and water inlet, return water are placed in out
Mouth end, it is not only convenient to overhaul, but also safety, it is not easy to scald.Spiral stream guidance blade simultaneously can promote material in rotation, be not present
Stifled slag and coking phenomenon；Longitudinal blade extends the time of contact of hot material and cylinder, must increase heat exchange area at double, make hot material
Cold burden is sufficiently mixed.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model
Fig. 2 is the structural schematic diagram of the utility model.
Specific embodiment
As shown in Figure 1, a kind of coal Drying and cooling system, including the first conveying device 1 for conveying raw coal, described
One conveying device connects drying system 2, and the drying system passes through the second conveying device 3 connection drying feed bin 4, the baking
Siccative storehouse connects reaction kettle 7 by conveyer belt 5 and the first spiral 6；Reaction kettle is connected by the second spiral 8 and the second conveying device 9
Intermediate bunker 10 is connect, intermediate bunker connects cooling system by third spiral 20, and the cooling system is conveyed by third and filled
Set 13 connection silos 14.
Cooling system is lag cooler, and lag cooler 3 includes feeding device 15 and discharging device 19, and the lag cooler includes interior
Roller and outer roller are cooling-water duct between the inner roller and outer roller, and the inner wall of the inner roller is equipped with to be divided in the shape of a spiral
The spiral stream guidance blade of cloth.Lag cooler includes preceding backing ring 16, rear backing ring 18, support roller, gear ring and its driving machine for driving the gear ring
Structure 17.Reaction kettle and the second spiral are equipped with dynamic and static sealing device and metal compensator.The rear end static and dynamic sealing of lag cooler is connected
There is cooling water inlet/outlet pipe 12.Dynamic and static sealing device is mainly by gland component, enhancing soft graphite disk, sealed outer ring component and sealing
The composition such as inner shield ring component.The tensile strength that enhancing flexible graphite stuffing not only overcomes pure graphite material is low, soft time flexible
The disadvantages such as poor flexibility, air-tightness be low.The circle number wound in this structure is 8~12 circles.
Drying system includes the roller with driving device, and feeding seal case, outlet end is arranged in the input end of the roller
Setting discharging seal box, the roller are at least level-one.Intermediate bunker includes two concatenated first intermediate bunkers and second
The top of intermediate bunker, intermediate bunker is cylindrical structure, and lower part is inverted pyramidal structures, the upper and lower part of two intermediate bunkers
Valve is installed respectively.Material position instruction device for detecting accumulation of material amount, the bottom of intermediate bunker are installed in intermediate bunker
It is also equipped with 1~2 hopper wall vibrator.
Reaction kettle is Rotatable mechanism, and reaction kettle is externally provided with heater box, and is equipped with the heat conducting pipe through the reaction kettle.
The specific operation process of the present embodiment above-mentioned apparatus is as follows:
1) drying system includes roller and driving device, by driving device driving roller rotation, the materials such as powder coal from into
Material mouth enters, and the hot winds such as waste heat flue gas enter from the hot wind inlet of drying system, the material in roller 11 L-type lifting blade not
Break under rolling and moving ahead, material enters back into the rolling of next circulation by conveying device from the discharge port discharge of discharging seal box
Cylinder, until drying reaches requirement.
2) when cooling material, open the driving device of lag cooler, open cooling water inlet pipe, material from intermediate bunker, into
Material device falls into lag cooler, after being fully cooled, goes out from discharging device, is delivered to silo through 3rd device；Intermediate bunker is suitably opened
Hopper wall vibrator 27 is opened, material is drained.
3) upgraded coal after cooling in silo according to discharging platform discharging of the production capacity at support frame to lorry or
Other devices.
The foregoing is merely the preferable implementation examples of the utility model, are not intended to limit the utility model, all in this reality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (9)
1. a kind of coal Drying and cooling system, it is characterised in that including the first conveying device for conveying raw coal, described first
Conveying device connects drying system, and the drying system passes through the second conveying device connection drying feed bin, the drying material
Storehouse connects reaction kettle by the first spiral；The reaction kettle connects intermediate bunker with the second conveying device by the second spiral,
Intermediate bunker connects cooling system by third spiral, and the cooling system connects silo by third conveying device.
2. a kind of coal Drying and cooling system as described in claim 1, which is characterized in that the cooling system is lag cooler,
The lag cooler includes inner roller and outer roller, is cooling-water duct between the inner roller and outer roller, the inner roller
Inner wall is equipped with the spiral stream guidance blade being spirally distributed.
3. a kind of coal Drying and cooling system as claimed in claim 2, which is characterized in that the lag cooler includes preceding backing ring,
Backing ring afterwards, support roller, gear ring and its driving mechanism for driving the gear ring.
4. a kind of coal Drying and cooling system as described in claim 1, which is characterized in that the reaction kettle and the second spiral are pacified
Equipped with dynamic and static sealing device and metal compensator.
5. a kind of coal Drying and cooling system as claimed in claim 2, which is characterized in that the rear end static and dynamic sealing of the lag cooler
Linking has cooling water inlet/outlet pipe.
6. a kind of coal Drying and cooling system as claimed in claim 5, which is characterized in that the drying system includes with drive
Feeding seal case is arranged in the roller of dynamic device, the input end of the roller, and outlet end setting discharging seal box, the roller is extremely
It is less level-one.
7. a kind of coal Drying and cooling system as claimed in claim 6, which is characterized in that the intermediate bunker includes two strings
The first intermediate bunker and the second intermediate bunker of connection, the top of intermediate bunker are cylindrical structure, and lower part is inverted pyramidal structures, two
The upper and lower part of a intermediate bunker is installed by valve respectively.
8. a kind of coal Drying and cooling system as claimed in claim 7, it is characterised in that installation is useful in the intermediate bunker
In the material position instruction device of detection accumulation of material amount, the bottom of intermediate bunker is also equipped with 1~2 hopper wall vibrator.
9. a kind of coal Drying and cooling system as described in claim 1, it is characterised in that the reaction kettle is Rotatable mechanism,
Reaction kettle is externally provided with heater box, and is equipped with the heat conducting pipe through the reaction kettle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821278304.4U CN209541334U (en) | 2018-08-09 | 2018-08-09 | A kind of coal Drying and cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821278304.4U CN209541334U (en) | 2018-08-09 | 2018-08-09 | A kind of coal Drying and cooling system |
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| Publication Number | Publication Date |
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| CN209541334U true CN209541334U (en) | 2019-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821278304.4U Active CN209541334U (en) | 2018-08-09 | 2018-08-09 | A kind of coal Drying and cooling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112902549A (en) * | 2019-11-19 | 2021-06-04 | 新沂市新南环保产业技术研究院有限公司 | High-temperature baking cooling device |
-
2018
- 2018-08-09 CN CN201821278304.4U patent/CN209541334U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112902549A (en) * | 2019-11-19 | 2021-06-04 | 新沂市新南环保产业技术研究院有限公司 | High-temperature baking cooling device |
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