CN102393132A - Vertical microwave drying coal furnace - Google Patents
Vertical microwave drying coal furnace Download PDFInfo
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- CN102393132A CN102393132A CN2011103586162A CN201110358616A CN102393132A CN 102393132 A CN102393132 A CN 102393132A CN 2011103586162 A CN2011103586162 A CN 2011103586162A CN 201110358616 A CN201110358616 A CN 201110358616A CN 102393132 A CN102393132 A CN 102393132A
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Abstract
The invention belongs to the field of material drying equipment, in particular relates to a vertical microwave drying coal furnace which comprises a microwave drying furnace body, wherein a feeding hopper is arranged at the top end of the microwave drying furnace body; a waveguide duct for conducting microwaves is installed on the microwave drying furnace body; a ventilation pipeline is arranged in the microwave drying furnace body; a gas inlet of the ventilation pipeline is connected with high-pressure nitrogen gas filling equipment, and a gas outlet of the ventilation pipeline is communicated to the outside; the ventilation pipeline is drilled; and a discharge valve is arranged at a discharge opening at the bottom of the microwave drying furnace body. In the invention, a vertical structure is adopted, thus the floor space is small, the structure is simple, and the manufacturing cost is lowered; the microwave heating is adopted, thus the coal can be dried quickly and uniformly; the coal is used as a heating element, thus the heat utilization efficiency is high, the energy is saved, and the environment is protected; the high-pressure nitrogen gas filled in the ventilation pipeline forms negative pressure in the pipeline, and a through hole only absorbs water vapor evaporated from the coal, thus the clogging or microwave leakage is avoided; and a helical conveyer below the discharge opening can be used for accurately controlling the discharge quantity and discharge speed of the coal.
Description
Technical field
The present invention relates to a kind of vertical microwave drying coal stove, belong to the dry materials apparatus field.
Background technology
At present, in the equipment of dry materials, adopt traditional drying methods such as flame, hot blast, steam, electrical heating usually; These conventional methods are the external heat drying, after the material surface absorbs heat, through the heat conduction; Heat infiltrates into material inside, and it is dry to heat up immediately, needs the regular hour but will make the material centre reach required temperature; The relatively poor object required time of thermal conductivity is just longer, and heats inhomogeneous.Some enterprise adopts the method for microwave drying at present, compares with the traditional drying mode, and the drying mechanism of microwave drying is different; Microwave energy penetrates interior of articles, heat simultaneously the inside and outside, the heating rapid and uniform, and wet stock is in the microwave high-frequency electric field of extremely lacking cycle of oscillation; Its inner hydrone can polarize and along the direction proper alignment of microwave electric field, then rotate with the mutual variation of high frequency alternating electric field direction rapidly, and produces violent collision and friction (can reach each second more than one hundred million times); Making a part of microwave energy be converted into molecular motion can; And show with the form of heat, the temperature of water is raise and leave material, thereby make dry materials.That is to say that after microwave got into material and is absorbed, himself energy became heat energy in coal dielectric internal conversion.Therefore, microwave drying is to utilize electromagnetic wave as heating source, this a kind of drying mode as heater of material that is dried, energy-conserving and environment-protective.But traditional microwave drying coal equipment adopts horizontal type structure, take up room big and need belt etc. to transmit coal mechanism, and complex structure, manufacturing cost is high.
Summary of the invention
According to above deficiency of the prior art, the technical problem that the present invention will solve is: the vertical microwave drying coal stove that a kind of simple in structure, low cost of manufacture, dry rapid and uniform and energy-conserving and environment-protective are provided.
The technical solution adopted for the present invention to solve the technical problems is: described vertical microwave drying coal stove, comprise the microwave drying body of heater, and it is characterized in that: microwave drying body of heater top is provided with feed hopper; The waveguide that is used to conduct microwave is installed on the microwave drying body of heater; In the microwave drying body of heater vent line is set, the air inlet of vent line connects high pressure nitrogen and charges into equipment, and exhaust outlet communicates with the external world; Hole on the vent line, the discharging opening place of microwave drying body of heater bottom is provided with the discharging valve.
Feed spiral longitudinally is installed in the described microwave drying body of heater.The motion of spinning of helical blade traction coal particles through the feed spiral makes to get into the interior microwave of body of heater and fully absorbed by coal, to reach the purpose of even dry coal.
The below installation material material conveying device of described discharging opening.The preferred conveying worm of device for transporting objects can accurately be controlled the load and the discharging speed of coal through conveying worm.
Operation principle:
Because coal of different nature is different to the absorption of microwave; In the microwave field of certain frequency, the water in the coal is because its dielectric loss is bigger than coal, so caloric receptivity is much bigger; Therefore the higher position of water content absorbs microwave more than the lower position of water content in the coal; Under microwave action, the rate of drying of coal reaches unanimity, homogeneous heating; Because microwave has bigger penetration capacity, can make the inner direct heat that produces of coal during heating, inside and outside heating simultaneously, the inner water of coal can be heated and directly be evaporated soon, makes coal dry through heating in a short period of time; Because it is inner that heat directly comes from coal to be dried, the heat loss in the medium around is few, adds that microwave drying body of heater itself does not absorb microwave, is absorbed so microwave all has the coal of moisture, and the thermal efficiency is high.
The course of work:
Material gets in the microwave drying body of heater through feed hopper, and through feed spiral longitudinally coal is evenly scattered, and waveguide imports microwave in the microwave drying body of heater into then, makes coal dry rapidly and uniformly.In the heat drying process; High pressure nitrogen gets in the vent line through air inlet; Thereby make the inner negative pressure that forms of vent line; Absorb the steam from coal, evaporate and steam is discharged the microwave drying body of heater from exhaust outlet through the hole on the vent line, dry coal transports the microwave drying body of heater through conveying worm.Through adopting vertical structure and feed spiral longitudinally being installed in the microwave drying body of heater, saved coal conveyor structures such as the needed belt of horizontal type structure, save the space and reduced manufacturing cost.
The beneficial effect that the present invention had is:
Whole vertical microwave drying coal stove adopts vertical structure, has significantly reduced floor space, has replaced in the body of heater of traditional bedroom coal conveyor structures such as belt through vertical conveyor screw, and is simple in structure and reduced manufacturing cost; Through microwave coal is heated, make coal drying rapidly and uniformly; This microwave heating with coal itself as heater, so heat energy utilization rate height and energy-conserving and environment-protective; The high pressure nitrogen that feeds in the vent line can make the inner negative pressure that forms of pipeline, only can absorb the steam that from coal, evaporates but not powder or remaining microwave behind the coal drying through the hole, thereby avoids clogging or produce microwave leakage; The conveying worm of discharging opening below can accurately be controlled the load and the discharging speed of coal.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the left view of Fig. 1.
Among the figure: 1, microwave drying body of heater; 2, feed spiral; 3, discharging valve; 4, conveying worm; 5, air inlet; 6, vent line; 7, waveguide; 8, feed hopper; 9, exhaust outlet.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are done and to be further described:
Like Fig. 1, shown in 2, vertical microwave drying coal stove comprises microwave drying body of heater 1; Microwave drying body of heater 1 top is provided with feed hopper 8; The waveguide 7 that is used to conduct microwave is installed on the microwave drying body of heater 1, feed spiral 2 and vent line 6 longitudinally are installed in the microwave drying body of heater 1, the air inlet 5 of vent line 6 connects high pressure nitrogen and charges into equipment; Exhaust outlet 9 communicates with the external world; Boring on the vent line 6, the discharging opening place of microwave drying body of heater 1 bottom is provided with discharging valve 3, and conveying worm 4 is installed in the discharging opening below.
During work; Transport (like belt feeder) is transported to feed hopper 8 places according to certain speed with coal and through feed hopper 8 coal is sent in the microwave drying body of heater 1; And through feed spiral longitudinally 2 coal is evenly scattered, waveguide 7 imports microwave (being penetrated by the magnetic control hair) in the microwave drying body of heater 1 into then, makes coal dry rapidly and uniformly; In the heat drying process; High pressure nitrogen gets in the vent lines 6 through air inlet 5, thereby makes the vent line 6 inner negative pressure that form, and absorbs the steam that from coal, evaporates and steam is discharged microwave drying bodies of heater 1 from exhaust outlet 9 through the hole on the vent line 6; Dry coal transports microwave drying body of heater 1 through conveying worm 4, in this process, can accurately control the load and the discharging speed of coal through conveying worm 4.
The present invention adopts vertical microwave drying body of heater 1 and through 2 feedings of feed spiral, saved coal conveyor structures such as the needed belt of horizontal type structure, and is simple in structure, saved the space and reduced manufacturing cost.Through microwave coal is carried out drying, dry rapid and uniform, heat energy utilization rate height and energy-conserving and environment-protective.
Claims (4)
1. a vertical microwave drying coal stove comprises the microwave drying body of heater, and it is characterized in that: microwave drying body of heater top is provided with feed hopper; The waveguide that is used to conduct microwave is installed on the microwave drying body of heater; In the microwave drying body of heater vent line is set, the air inlet of vent line connects high pressure nitrogen and charges into equipment, and exhaust outlet communicates with the external world; Hole on the vent line, the discharging opening place of microwave drying body of heater bottom is provided with the discharging valve.
2. vertical microwave drying coal stove according to claim 1 is characterized in that: feed spiral longitudinally is installed in the described microwave drying body of heater.
3. vertical microwave drying coal stove according to claim 1 and 2 is characterized in that: the below installation material material conveying device of described discharging opening.
4. vertical microwave drying coal stove according to claim 3, it is characterized in that: described device for transporting objects is a conveying worm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103586162A CN102393132A (en) | 2011-11-14 | 2011-11-14 | Vertical microwave drying coal furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103586162A CN102393132A (en) | 2011-11-14 | 2011-11-14 | Vertical microwave drying coal furnace |
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| CN102393132A true CN102393132A (en) | 2012-03-28 |
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| CN2011103586162A Pending CN102393132A (en) | 2011-11-14 | 2011-11-14 | Vertical microwave drying coal furnace |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074140A (en) * | 2012-12-28 | 2013-05-01 | 神华集团有限责任公司 | Coal impurity removing system |
| CN103627466A (en) * | 2012-08-26 | 2014-03-12 | 九峰控股香港有限公司 | A solid fossil fuel reaction device |
| CN103638888A (en) * | 2013-12-19 | 2014-03-19 | 天津理工大学 | Vertical high-temperature microwave device for preparing fluorescent powder |
| CN104864697A (en) * | 2015-06-02 | 2015-08-26 | 谢博 | Air heater of hopper drying machine |
| CN105138736A (en) * | 2015-07-31 | 2015-12-09 | 河海大学 | Numerical simulation method of lignite microwave drying furnace flow field |
| CN107869898A (en) * | 2017-12-05 | 2018-04-03 | 安徽工程大学 | A kind of segmented microwave drying material system |
| CN110285655A (en) * | 2019-07-23 | 2019-09-27 | 南京晓庄学院 | A kind of Hericium erinaceus drying system and method that pulsed microwave is hot air combined |
Citations (5)
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| JPS60205169A (en) * | 1984-03-29 | 1985-10-16 | 株式会社新潟鐵工所 | Continuous treater for drying, etc. |
| CN86108226A (en) * | 1986-12-18 | 1988-06-29 | 车里雅宾斯克汽车制造自动化和机械化工艺设计院 | Apparatus for conductive drying loose materials |
| GB2419659A (en) * | 2004-10-28 | 2006-05-03 | S M C Srl | A continuous multistage drying tower heated with microwaves comprises plural fluidised beds |
| CN102207350A (en) * | 2011-05-19 | 2011-10-05 | 湖南科达粉体工程有限公司 | Method for carrying out fluidized drying on lignite by microwaves |
| CN202329027U (en) * | 2011-11-14 | 2012-07-11 | 山东博润工业技术有限公司 | Vertical microwave drying coal furnace |
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2011
- 2011-11-14 CN CN2011103586162A patent/CN102393132A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS60205169A (en) * | 1984-03-29 | 1985-10-16 | 株式会社新潟鐵工所 | Continuous treater for drying, etc. |
| CN86108226A (en) * | 1986-12-18 | 1988-06-29 | 车里雅宾斯克汽车制造自动化和机械化工艺设计院 | Apparatus for conductive drying loose materials |
| GB2419659A (en) * | 2004-10-28 | 2006-05-03 | S M C Srl | A continuous multistage drying tower heated with microwaves comprises plural fluidised beds |
| CN102207350A (en) * | 2011-05-19 | 2011-10-05 | 湖南科达粉体工程有限公司 | Method for carrying out fluidized drying on lignite by microwaves |
| CN202329027U (en) * | 2011-11-14 | 2012-07-11 | 山东博润工业技术有限公司 | Vertical microwave drying coal furnace |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103627466A (en) * | 2012-08-26 | 2014-03-12 | 九峰控股香港有限公司 | A solid fossil fuel reaction device |
| CN103627466B (en) * | 2012-08-26 | 2014-12-10 | 九峰控股香港有限公司 | A solid fossil fuel reaction device |
| CN103074140A (en) * | 2012-12-28 | 2013-05-01 | 神华集团有限责任公司 | Coal impurity removing system |
| CN103638888A (en) * | 2013-12-19 | 2014-03-19 | 天津理工大学 | Vertical high-temperature microwave device for preparing fluorescent powder |
| CN103638888B (en) * | 2013-12-19 | 2015-05-20 | 天津理工大学 | Vertical high-temperature microwave device for preparing fluorescent powder |
| CN104864697A (en) * | 2015-06-02 | 2015-08-26 | 谢博 | Air heater of hopper drying machine |
| CN105138736A (en) * | 2015-07-31 | 2015-12-09 | 河海大学 | Numerical simulation method of lignite microwave drying furnace flow field |
| CN105138736B (en) * | 2015-07-31 | 2018-04-03 | 河海大学 | A kind of lignite microwave drier Field Flow Numerical Simulation method |
| CN107869898A (en) * | 2017-12-05 | 2018-04-03 | 安徽工程大学 | A kind of segmented microwave drying material system |
| CN110285655A (en) * | 2019-07-23 | 2019-09-27 | 南京晓庄学院 | A kind of Hericium erinaceus drying system and method that pulsed microwave is hot air combined |
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Address after: 255086 Shandong province Zibo City Yumin Road hi tech Development Zone No. 169 Applicant after: Shandong Borun Process Industrial Technology Corp., Ltd. Address before: 255086 Shandong province Zibo City Yumin Road hi tech Development Zone No. 169 Applicant before: Shandong Borun Process Industrial Technology Co., Ltd. |
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Application publication date: 20120328 |