CN1834561A - Drying method of high moisture material and dryer set thereof - Google Patents
Drying method of high moisture material and dryer set thereof Download PDFInfo
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- CN1834561A CN1834561A CN 200510017417 CN200510017417A CN1834561A CN 1834561 A CN1834561 A CN 1834561A CN 200510017417 CN200510017417 CN 200510017417 CN 200510017417 A CN200510017417 A CN 200510017417A CN 1834561 A CN1834561 A CN 1834561A
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Abstract
The present invention discloses a method for drying high-wet material. Said method includes the following two steps: firstly, quickly drying high-wet material in rotary pneumatic dryer to make its water content be reduced to 25-35%, then feeding the material into fluidized bed drying machine to continuously dry said material and make its water content be less than 17%. Its drying machine unit includes rotary pneumatic dryer and fluidized bed drying machine.
Description
Technical field
The invention belongs to and use the heating means drying solid material, relate in particular to the drying means of high moisture material, the invention still further relates to the dryer group of using this method.
Background technology
Numerous food product, pharmacy, chemical industry discarded object all are high-moisture viscous materials of paste, pasty state as vinasse, pomace, the dregs of a decoction etc., bring a lot of difficulties to oven dry, and machinery commonly used at present is revolving drum drier and swirling eddy rapid dryer.
Revolving drum drier is the rotor that and horizontal line slightly are inclination, and material enters from a higher end, and along with the rotation of cylinder, the material gravitate runs to a lower end.Flight is housed on cylinder inner wall, and its effect is that material is taken up and spilt down, makes long-pending increase of contact surface of material and air-flow, with the raising rate of drying, and promotes that material advances.Hot-air after the heating advances from revolving drum one end, and another brings out, and contacts with the material that flight is kicked up, and it is carried out drying.Xiang Guan document has ZL91225806.3 disclosed " whizzer flight ", ZL89103966.X disclosed " drying machine for materials with continuous multitube rotation and spray hot wind " therewith.This drier structure complexity, cost height, maintenance cost height, and material contacts insufficiently with air, cause hot-spot easily, and " fry and stick with paste " phenomenon is arranged, and is not suitable for the drying of heat sensitive material.
Rotary air-drying machine, its main body are cylinders that stands up, and the tube bottom is that hollow rotation spiral case and annular catch are arranged, and at annular catch center one conical bottom is arranged, and is gapped between catch and the conical bottom, forms narrow slit, and are equipped with the agitator of respective shapes.Gas tangentially enters spiral case, through the slit, bottom of annular catch, enters hothouse inside at a high speed, produces the rotation ascending air.Material enters hothouse by scroll feeder, and under agitator and the stirring of rotation ascending air, impacting, fluidization, also dry is broken up and made it to material, becomes granular or powdery product.The characteristics of this drying machine are air and material full contact, time is short, most of moisture evaporates in stirring, pulverizing, and also will in drying machine, drying fall in conjunction with water in the material, this can cause the material that does not reach certain moisture content, certain particle size not go out drying machine, form partial material fragmentation in drying machine always, rotate, move up and down, and cause energy waste.
Fluidized bed drying equipment well in the dried material in conjunction with water, but it requires material to be fluidized state, and is then powerless to the high moisture content viscous material of aforesaid paste, pasty state.
Summary of the invention
The drying means that the purpose of this invention is to provide a kind of high moisture material, dry in this way high moisture material can cut down the consumption of energy, and the moisture content of finished product is evenly distributed, and another object of the present invention provides the dryer group of using above-mentioned drying means.
For achieving the above object, the present invention adopts following technical scheme: a kind of drying means of high moisture material, be earlier with high moisture material rapid draing in the rotary air-drying machine, make its moisture content reduce to 25～35%, material enters and continues drying in the fluid bed dryer then, makes its moisture content smaller or equal to 17%.
Implement the high moisture material dryer group of above-mentioned drying means, comprise hot-blast stove, the rotary air-drying machine, cyclone separator, fluid bed dryer and the feeder that drives by buncher, the air inlet of rotary air-drying machine and the outlet of hot-blast stove flue feed channel are joined, the outlet of rotary air-drying machine and the import of cyclone separator are joined, the discharging opening of cyclone separator and the charging aperture of fluid bed dryer join, the air outlet and the air-introduced machine of cyclone separator join, the air inlet of fluid bed dryer and hot-blast stove net heat air outlet slit join, and the air outlet of fluid bed dryer and the air inlet of air blast join.
Temperature sensor is equipped with at air outlet place at cyclone separator, and temperature sensor links to each other with microprocessor, and microprocessor links to each other with buncher.
At least one ring baffle is housed in the cylindrical shell of rotary air-drying machine.
The air inlet of the air outlet of fluid bed dryer and rotary air-drying machine joins.
The air outlet of air blast and the air inlet of hot-blast stove join.
After adopting technique scheme, high moisture material rapid draing in the rotary air-drying machine earlier becomes the lower graininess of moisture content, and material particles separates with moisture after leaving pneumatic drier with air-flow again, enter at last and continue drying in the fluid bed dryer, become the satisfactory finished product of moisture content.In dry run, by regulating the speed that material enters the rotary air-drying machine, control the time of staying of material in pneumatic drier, thereby can avoid the long-time hot-spot that causes that stops of material, and reduce the invalid loss of heat energy.
The inventor has carried out contrast test with the high moisture material dryer group among the present invention and revolving drum drier, rotary air-drying machine, high moisture material adopts wet pomace, result of the test is: one ton of finished product of every production, need consume 800 kilograms in coal, power consumption 45 degree with revolving drum drier, need consume 864 kilograms in coal, power consumption 238 degree with the rotary air-drying machine, and only need consume 500 kilograms in coal, power consumption 33 degree with the dryer group among the present invention, as seen, the energy-saving effect of the high moisture material dryer group among the present invention is very remarkable.
Description of drawings
Accompanying drawing is the structural representation of high moisture material dryer group of the present invention.
The specific embodiment
The drying means of high moisture material involved in the present invention, be earlier with high moisture material rapid draing in the rotary air-drying machine, make its moisture content reduce to 25～35%, the material particles that leaves pneumatic drier with air-flow separates with moisture again, material enters and continues drying in the fluid bed dryer then, and its moisture content is dropped to below 17%.
As shown in drawings, use the high moisture material dryer group of above-mentioned drying means, comprise hot-blast stove 1, rotary air-drying machine 3, fluid bed dryer 6 and the feeder 2 that is driven by buncher 12, it also comprises cyclone separator 4, air-introduced machine 8 and air blast 7.The air inlet of rotary air- drying machine 3 and 13 outlets of hot-blast stove flue feed channel are joined, the import of the outlet of rotary air-drying machine 3 and cyclone separator 4 is joined, the charging aperture of the discharging opening of cyclone separator 4 and fluid bed dryer 6 joins, the air outlet of cyclone separator 4 and air-introduced machine 8 join, the air inlet of fluid bed dryer 6 and hot-blast stove 1 net heat air outlet slit are joined by net heat air duct 9, and the pipeline among the figure between B and the B ' omits.The air inlet of the air outlet of fluid bed dryer 6 and air blast 7 joins.
In order to make full use of heat energy, can join the air inlet of the air outlet of air blast 7 and hot-blast stove 1, reuse after will having the hot air of uniform temperature, just A among the figure and A ' are interconnected.
Certainly, also can join the air inlet of the air outlet of air blast 7 and rotary air-drying machine 3, with the dry high moisture material of coming together of the hot blast in hot-air in the fluid bed dryer 6 and the hot-blast stove 1.
In the cylinder of rotary air-drying machine 3, at least one angled ring baffle 10 is housed, three ring baffles are arranged in the accompanying drawing, ring baffle is separated into the adjacent cells that several centers communicate with cylinder bore, in the cylinder bottom rabbling mechanism 11 is arranged.
Also available other the air heater of hot-blast stove in the dryer group of the present invention replaces.
The course of work of this high moisture material dryer group is: material is sent into rotary air-drying machine 3 by feeder 2, simultaneously, behind the heat exchanger of thermal current in hot-blast stove that fuel combustion produces in the hot-blast stove 1, send into rotary air-drying machine 3 by flue gas duct 13, and produce in rotary air-drying machine 3 bottoms and to rotate ascending air at a high speed, high moisture material is rotating under the acting in conjunction of ascending air and rabbling mechanism 11 at a high speed, be torn, broken, dry, lose contained free moisture content fast, the particle that formation varies in size, and rise to a nethermost ring baffle 10 with ascending air, granularity is big, moisture high material particles is deposited on this ring baffle, thereon rotation, dry, broken; Slightly little, the moisture low slightly material particles of granularity then rises on the ring baffle of last layer ... the rest may be inferred, and then bulky grain moisture content distributes slowly, but in drying machine the time of staying long, granule moisture content distributes soon, the time of staying is short in drying machine.Material is dried at moisture 25～35% o'clock, leave the rotary air-drying machine with air-flow, enter cyclone separator 4, in this air and feed separation, highly humid air enters in the atmosphere through air-introduced machine 8, material enters fluid bed dryer 6, and fluid bed dryer to the required moisture content of finished product, generally requires the moisture content of finished product not to be higher than 17% dry materials.Entering the hot-air of fluid bed dryer 6, is the net heat air that is come by heat exchanger in the hot-blast stove 1, flows into through net heat air duct 9; Go out the air of fluid bed dryer 6, also can contain certain heat, blast the combustion chamber of hot-blast stove 1 by air blast 7, as combustion air.
Claims (6)
1, a kind of drying means of high moisture material is characterized in that: earlier with high moisture material rapid draing in the rotary air-drying machine, make its moisture content reduce to 25～35%, material enters and continues drying in the fluid bed dryer then, makes its moisture content smaller or equal to 17%.
2, implement the high moisture material dryer group of drying means as claimed in claim 1, comprise hot-blast stove, the rotary air-drying machine, cyclone separator, fluid bed dryer and the feeder that drives by buncher, it is characterized in that: the air inlet of rotary air-drying machine and the outlet of hot-blast stove flue feed channel are joined, the outlet of rotary air-drying machine and the import of cyclone separator are joined, the discharging opening of cyclone separator and the charging aperture of fluid bed dryer join, the air outlet and the air-introduced machine of cyclone separator join, the air inlet of fluid bed dryer and hot-blast stove net heat air outlet slit join, and the air outlet of fluid bed dryer and the air inlet of air blast join.
3, high moisture material dryer group as claimed in claim 2 is characterized in that: temperature sensor is equipped with at the air outlet place at cyclone separator, and temperature sensor links to each other with microprocessor, and microprocessor links to each other with buncher.
4, high moisture material dryer group as claimed in claim 2 is characterized in that: at least one ring baffle is housed in the cylindrical shell of rotary air-drying machine.
5, as claim 2,3 or 4 described high moisture material dryer group, it is characterized in that: the air inlet of the air outlet of fluid bed dryer and rotary air-drying machine joins.
6, as claim 2,3 or 4 described high moisture material dryer group, it is characterized in that: the air outlet of air blast and the air inlet of hot-blast stove join.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510017417 CN1834561A (en) | 2005-03-14 | 2005-03-14 | Drying method of high moisture material and dryer set thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510017417 CN1834561A (en) | 2005-03-14 | 2005-03-14 | Drying method of high moisture material and dryer set thereof |
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| Publication Number | Publication Date |
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| CN1834561A true CN1834561A (en) | 2006-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510017417 Pending CN1834561A (en) | 2005-03-14 | 2005-03-14 | Drying method of high moisture material and dryer set thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349497B (en) * | 2008-09-01 | 2010-06-09 | 国家粮食储备局郑州科学研究设计院 | High-efficiency energy-saving drying apparatus |
| CN102564070A (en) * | 2012-02-27 | 2012-07-11 | 无锡超科食品有限公司 | Material drying system |
| CN102645085A (en) * | 2012-02-24 | 2012-08-22 | 青岛科技大学 | Method for continuously drying polycarbonate |
| CN103575081A (en) * | 2013-11-05 | 2014-02-12 | 江苏迈安德食品机械有限公司 | Fermented feed drying method |
| CN103575082A (en) * | 2013-11-05 | 2014-02-12 | 江苏迈安德食品机械有限公司 | Fermented feed drying system |
-
2005
- 2005-03-14 CN CN 200510017417 patent/CN1834561A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349497B (en) * | 2008-09-01 | 2010-06-09 | 国家粮食储备局郑州科学研究设计院 | High-efficiency energy-saving drying apparatus |
| CN102645085A (en) * | 2012-02-24 | 2012-08-22 | 青岛科技大学 | Method for continuously drying polycarbonate |
| CN102645085B (en) * | 2012-02-24 | 2014-01-15 | 青岛科技大学 | Method for continuously drying polycarbonate |
| CN102564070A (en) * | 2012-02-27 | 2012-07-11 | 无锡超科食品有限公司 | Material drying system |
| CN103575081A (en) * | 2013-11-05 | 2014-02-12 | 江苏迈安德食品机械有限公司 | Fermented feed drying method |
| CN103575082A (en) * | 2013-11-05 | 2014-02-12 | 江苏迈安德食品机械有限公司 | Fermented feed drying system |
| CN103575082B (en) * | 2013-11-05 | 2015-05-20 | 迈安德集团有限公司 | Fermented feed drying system |
| CN103575081B (en) * | 2013-11-05 | 2015-05-20 | 迈安德集团有限公司 | Fermented feed drying method |
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