CN103256788A - Activated clay drying method - Google Patents
Activated clay drying method Download PDFInfo
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- CN103256788A CN103256788A CN2013101362984A CN201310136298A CN103256788A CN 103256788 A CN103256788 A CN 103256788A CN 2013101362984 A CN2013101362984 A CN 2013101362984A CN 201310136298 A CN201310136298 A CN 201310136298A CN 103256788 A CN103256788 A CN 103256788A
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- atlapulgite
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Abstract
An activated clay drying method includes the following steps: (1) controlling a feeding motor and a coal feeding motor through a controller according to the temperature, driving a conveyor belt to transmit fuel to a hot-blast stove by the coal feeding motor, driving the conveyer belt to transmit activated clay wet materials to a drying kiln by the feeding motor, controlling the temperature of entered hot air to be not lower than 280 DEG C, and controlling the temperature of hot air at the feed end of the drying kiln to be between 40 DEG C and 50 DEG C; (2) enabling the activated clay wet materials to enter the drying kiln from the feed end of the drying kiln, meanwhile, transmitting hot air produced by the hot-blast stove to the feed end of the drying kiln through an air blower or an induced draft fan, and controlling the rotating speed of the drying kiln to be between 4 r/min to 8 r/min. The activated clay drying method is energy-saving, reduces raised dust and is higher in evaporation efficiency.
Description
Technical field
The present invention relates to drying system, be specifically related to a kind of atlapulgite furnace drying method.
Background technology
Atlapulgite is to be raw material with clay (mainly being bentonite), and through the adsorbent that operations such as activation processing such as persulfuric acid, rinsing, Separation of Solid and Liquid, oven dry, grinding are made, outward appearance is off-white powder, odorless, tasteless, nontoxic, absorption property is very strong, can be adsorbed with color substance, organic substance.The easy moisture absorption was placed for a long time and can be reduced absorption property in air.Be mainly used in oil catalysis and mineral oil, the decolouring of plant wet goods.Main mass parameter has: activity degree, percent of decolourization, free acid content etc.
The atlapulgite drying system mainly adopts rotary drum drying machine to connect apparatus for feeding and discharging equipment at present.Its form that generally adopts is the downflow type drying, and wet stock enters drying machine and just contacts with the higher drying medium of temperature, and the initial stage, dry motive force was bigger, and with the rising of temperature of charge, the temperature of drying medium reduces later on.So it is suitable to the less demanding material of final water content (being degree of drying).The dry material temperature of discharging is lower, is convenient to transportation.But from producing dust, thinner material is taken away by air-flow easily, and Dust Capacity is bigger.Be exactly specifically the wet stock of atlapulgite from the hot blast inlet feed, treat to arrive material outlet after hot blast and the atlapulgite heat exchange drying.The atlapulgite exit is the hot-blast outlet place just.Make atlapulgite be taken out of in the exit much like this, and to evaporate moisture in the atlapulgite wet stock, hot blast temperature that need be when just entering rotary drum drying machine is higher, has both needed a large amount of heats, though transpiring moisture so both had been unfavorable for that environmental protection was not energy-conservation yet so faster.
Dryer is evenly distributed on various piece and drying medium excellent contact on the rotating cylinder cross section in order to increase material, and the solid lifting blade of a large amount of erection weldings has evenly distributed in cylindrical shell.Lifting blade is one of accessory very important in the dryer equipment, and the design of lifting blade and substep directly influence this drying effect.Comparatively similar with the rotary drum drying machine of the application of atlapulgite drying system of the present invention, as Chinese patent (application number: 200720036850.2) described a kind of rotating cylinder horizontal drying machine, comprise air blast, the high-boiling stove, elevator, feed bin, the frequency control belt feeder, tremie pipe, rotating cylinder, lifting blade, transmission system, dust pelletizing system, air-introduced machine, the discharging cover, blanking device, belt conveyer, it is characterized in that described lifting blade is " L " shape, be evenly distributed on the outer cylinder inwall of rotating cylinder, secondary lifting dispersing device also is housed on the inner cylinder outer wall of rotating cylinder; The large and small gear of transmission system is pick-off gear; Described dust pelletizing system includes cyclone dust collectors, air box impulse bag-type dust-precipitator two-stage dust removal.Described high-boiling stove also can adopt Coal powder spray stove, conventional oven hand-manipulated.Utilize " L " shape lifting blade and secondary lifting dispersing device to make material can evenly break up oven dry, adopted two-stage dust removal and pick-off gear simultaneously.This dryer specifically is applied in the atlapulgite drying system also need make improvement, and its structure is too complicated.
Summary of the invention
The objective of the invention is, provide a kind of energy-conservation, reduce airborne dust and the higher atlapulgite furnace drying method of evaporation efficiency.For realizing that purpose of the present invention is by following technical measures:
A kind of atlapulgite furnace drying method comprises hot-blast stove and drying kiln, and the drying kiln two ends are respectively feed end and exhaust end; Described hot-blast stove places the exhaust end of drying kiln, is provided with the air blast of hot blast being sent into drying kiln at exhaust end, or is provided with air-introduced machine at the feed end of drying kiln; Make in the drying kiln material direction of transfer opposite with the hot blast direction of transfer; The feed end of described drying kiln is provided with the charging motor; Described hot-blast stove is provided with into coal motor; Described charging motor, advance the thermometer that arranges on coal motor, the drying kiln and connect controller; Adopt following method flow:
1) controller is controlled the charging motor and is advanced the coal motor according to temperature, advances coal driven by motor conveyer belt fuel is delivered to hot-blast stove; Charging driven by motor conveyer belt is delivered to drying kiln with the atlapulgite wet stock; Control enters hot blast temperature and is not less than 280 ℃, and the hot blast temperature of feed end is 40～50 ℃;
2) the atlapulgite wet stock enters from the feed end of drying kiln, and the hot blast of hot-blast stove generation is simultaneously carried to feed end from the exhaust end of drying kiln through air blast or air-introduced machine; The rotating speed of control drying kiln is at 4～8r/min.
Described drying kiln is incubated by heat-insulation layer and the outside surrounding layer of inside, increases Btu utilization efficient.Described drying kiln is horizontal cylinder, be evenly distributed with at least one group of lifting blade vertically by inwall and come lifting, adjacent lifting blade on the same cross section of inwall is different with the angle of described drying kiln tangential direction, and such lifting increases the contact area of hot blast and material, increases evaporation efficiency.Be by drying kiln and be in tilted layout to push material, described feed end is higher than exhaust end, and gradient utilizes gravity to push the material conserve energy between 1～10 degree, the inclinations of two outer 1～10 degree, and material slowly pushes forward, has more evaporation time.
It is preferably, described that the hot-blast stove of hot blast is provided is the reciprocating fire grate combustion furnace.
Be to reduce dust pollution, the charging port of described drying kiln is provided with the lock conch and revolves reamer and prevent airborne dust.The feed end of described drying kiln is provided with device for recovering powder and reclaims the described device for recovering powder of dust and comprise that cyclone collector and sack cleaner reclaim dust.
The invention has the beneficial effects as follows: (1) is energy-conservation, the hot blast direction of transfer is opposite with the throughput direction of atlapulgite on the drying kiln, be that discharge end is exactly the initiating terminal that hot blast transmits, hot blast with the atlapulgite heat exchange after, the atlapulgite of oven dry is discharged, hot blast continues forward and the not fully atlapulgite heat exchange of oven dry, has taken full advantage of heat.Avoid in the prior art, hot blast and oven dry material are discharged wasted heat together.And drying kiln wall material is insulation material, and can make hot blast arrive material feed end temperature by controller to be low to moderate 40～50 ℃, and the material discharge temperature does not have wasted heat substantially at 60～80 ℃ yet.(2) reduce airborne dust, exhaust end at drying kiln, hot blast with the atlapulgite heat exchange after, the atlapulgite of oven dry is discharged, some airborne dusts are taken away in the hot blast transmission, and fully the atlapulgite of oven dry does not have suction-operated to airborne dust, more near feed end, moisture content of material is more high, and it is more obvious then to adsorb airborne dust.And be provided with cyclone collector and sack cleaner and charging port and discharge port at the feed end of drying kiln and all adopt sealing device.The sealing device of charging port revolves reamer for the lock conch.The minimizing of these technical characterictic maximum possible airborne dust.(3) evaporation efficiency is higher, and the ingenious design of lifting blade makes the contact area of hot blast and material increase greatly, and evaporation efficiency is higher.
Generally speaking, the present invention is a kind of energy-conservation, reduces the drying system of the higher atlapulgite of airborne dust and evaporation efficiency.
Description of drawings
Fig. 1 is a kind of structural representation of atlapulgite furnace drying method
Fig. 2 is drying kiln lifting blade cross section structure schematic diagram
The specific embodiment
A kind of atlapulgite furnace drying method
A kind of atlapulgite furnace drying method comprises hot-blast stove 2 and drying kiln 3, and drying kiln 3 two ends are respectively feed end 6 and exhaust end 7; Described hot-blast stove 2 places the exhaust end 7 of drying kiln 3, is provided with the air blast 12 of hot blast being sent into drying kiln 3 at exhaust end 7, or is provided with air-introduced machine 11 at the feed end 6 of drying kiln 3; Make in the drying kiln 3 the material direction of transfer opposite with the hot blast direction of transfer; The feed end 6 of described drying kiln 3 is provided with charging motor 8; Described hot-blast stove 2 is provided with into coal motor 9; Described charging motor 8, advance on coal motor 9, the drying kiln 3 thermometer 16 that arranges and connect controllers 10; Adopt following method flow:
1) controller 10 is controlled charging motor 8 and is advanced coal motor 9 according to temperature, advances coal motor 9 drive conveyer belts fuel is delivered to hot-blast stove 2; Charging motor 8 drives conveyer belt the atlapulgite wet stock is delivered to drying kiln 3; Control enters hot blast temperature and is not less than 280 ℃, and the hot blast temperature of feed end is 40～50 ℃;
2) the atlapulgite wet stock enters from the feed end 6 of drying kiln 3, and the hot blast of hot-blast stove 2 generations is simultaneously carried to feed end 6 from the exhaust end 7 of drying kiln 3 through air blast 12 or air-introduced machine 11; The rotating speed of control drying kiln 3 is at 4～8r/min;
In above-mentioned method flow, described drying kiln 3 is incubated by heat-insulation layer 14 and the outside surrounding layer 15 of inside.Described drying kiln 3 is horizontal cylinder, is evenly distributed with at least one group of lifting blade 13 vertically by inwall and comes lifting, and the adjacent lifting blade on the same cross section of inwall is different with the angle of described drying kiln 3 tangential directions.Be by drying kiln 3 and be in tilted layout to push material, described feed end 6 is higher than exhaust end 7, and gradient is between 1～10 degree.It is described that the hot-blast stove 2 of hot blast is provided is the reciprocating fire grate combustion furnace.6 mouthfuls of the feed ends of described drying kiln 3 are provided with the lock conch and revolve reamer 1 and prevent airborne dust.The feed end 6 of described drying kiln 3 is provided with device for recovering powder and reclaims dust.Described device for recovering powder comprises that cyclone collector 4 and sack cleaner 5 reclaim dust.
The inventor is by being applied in new factory with described atlapulgite furnace drying method and method thereof, and the drying system with old factory contrasts then, and the drying system of old factory is hot blast downflow type drying system.Electricity consumption is with coal energy-conservation 30%.
Claims (8)
1. an atlapulgite furnace drying method comprises hot-blast stove (2) and drying kiln (3), and drying kiln (3) two ends are respectively feed end (6) and exhaust end (7); Described hot-blast stove (2) places the exhaust end (7) of drying kiln (3), is provided with the air blast (12) of hot blast being sent into drying kiln (3) at exhaust end (7), or is provided with air-introduced machine (11) at the feed end (6) of drying kiln (3); Make the middle material direction of transfer of drying kiln (3) opposite with the hot blast direction of transfer; The feed end (6) of described drying kiln (3) is provided with charging motor (8); Described hot-blast stove (2) is provided with into coal motor (9); Described charging motor (8), advance coal motor (9), drying kiln (3) and go up the thermometer (16) that arranges and connect controller (10); Adopt following method flow then:
1) controller (10) is controlled charging motor (8) and is advanced coal motor (9) according to temperature, advances coal motor (9) drive conveyer belt fuel is delivered to hot-blast stove (2); Charging motor (8) drives conveyer belt the atlapulgite wet stock is delivered to drying kiln (3); Control enters hot blast temperature and is not less than 280 ℃, and the hot blast temperature of feed end is 40～50 ℃;
2) the atlapulgite wet stock enters from the feed end (6) of drying kiln (3), and the hot blast of hot-blast stove (2) generation is simultaneously carried to feed end (6) from the exhaust end (7) of drying kiln (3) through air blast (12) or air-introduced machine (11); The rotating speed of control drying kiln (3) is at 4～8r/min.
2. atlapulgite furnace drying method as claimed in claim 1 is characterized in that: described drying kiln (3) is incubated by the surrounding layer (15) of inner heat-insulation layer (14) and outside.
3. atlapulgite furnace drying method as claimed in claim 1, it is characterized in that: described drying kiln (3) is horizontal cylinder, be evenly distributed with at least one group of lifting blade (13) vertically by inwall and come lifting, the adjacent lifting blade on the same cross section of inwall is different with the angle of described drying kiln (3) tangential direction.
4. atlapulgite furnace drying method as claimed in claim 1 is characterized in that: be by drying kiln (3) and be in tilted layout to push material, described feed end (6) is higher than exhaust end (7), and gradient is between 1～10 degree.
5. the drying system of atlapulgite as claimed in claim 1 is characterized in that: described the hot-blast stove (2) of hot blast is provided is the reciprocating fire grate combustion furnace.
6. the drying system of atlapulgite as claimed in claim 1 or 2 is characterized in that: feed end (6) mouth of described drying kiln (3) is provided with the lock conch and revolves reamer (1) and prevent airborne dust.
7. the drying system of atlapulgite as claimed in claim 1 or 2, it is characterized in that: the feed end (6) of described drying kiln (3) is provided with device for recovering powder and reclaims dust.
8. the drying system of atlapulgite as claimed in claim 7, it is characterized in that: described device for recovering powder comprises that cyclone collector (4) and sack cleaner (5) reclaim dust.
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| CN2013101362984A CN103256788A (en) | 2013-04-18 | 2013-04-18 | Activated clay drying method |
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| CN2013101362984A CN103256788A (en) | 2013-04-18 | 2013-04-18 | Activated clay drying method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115289785A (en) * | 2022-08-04 | 2022-11-04 | 黄石市天达热能科技股份有限公司 | Method for drying papermaking white mud |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050091872A1 (en) * | 2003-11-04 | 2005-05-05 | Gracff Roderich W. | Method and apparatus for controlling gas flow through granulate in drying hoppers |
| WO2007061352A1 (en) * | 2005-11-23 | 2007-05-31 | Svensk Rökgasenergi Intressenter Ab | An apparatus for drying of material in particle form |
| CN101762142A (en) * | 2010-01-29 | 2010-06-30 | 新星化工冶金材料(深圳)有限公司 | Baking furnace and method for baking titanium materials or boron materials |
| CN103013615A (en) * | 2012-12-19 | 2013-04-03 | 华电电力科学研究院 | Efficient drying and quality-improving device and method for brown coal |
-
2013
- 2013-04-18 CN CN2013101362984A patent/CN103256788A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050091872A1 (en) * | 2003-11-04 | 2005-05-05 | Gracff Roderich W. | Method and apparatus for controlling gas flow through granulate in drying hoppers |
| WO2007061352A1 (en) * | 2005-11-23 | 2007-05-31 | Svensk Rökgasenergi Intressenter Ab | An apparatus for drying of material in particle form |
| CN101762142A (en) * | 2010-01-29 | 2010-06-30 | 新星化工冶金材料(深圳)有限公司 | Baking furnace and method for baking titanium materials or boron materials |
| CN103013615A (en) * | 2012-12-19 | 2013-04-03 | 华电电力科学研究院 | Efficient drying and quality-improving device and method for brown coal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115289785A (en) * | 2022-08-04 | 2022-11-04 | 黄石市天达热能科技股份有限公司 | Method for drying papermaking white mud |
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Application publication date: 20130821 |