CN101829653B - Separating method of fly ash and device thereof - Google Patents
Separating method of fly ash and device thereof Download PDFInfo
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- CN101829653B CN101829653B CN200910025849A CN200910025849A CN101829653B CN 101829653 B CN101829653 B CN 101829653B CN 200910025849 A CN200910025849 A CN 200910025849A CN 200910025849 A CN200910025849 A CN 200910025849A CN 101829653 B CN101829653 B CN 101829653B
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Abstract
The invention relates to a separating method of fly ash and a device thereof. The device comprises a hopper, a chute, a collecting bin and the like. After a feeding valve of the chute is opened, dried fly ash in the hopper falls to the surface of a rotating electric roller and then is splashed down into the chute to form thin layer flow with the thickness less than 1mm under the action of gravity, wherein the chute has a gradually-enlarged section and is provided with a clapboard; a platform section is arranged at the tail end of the chute; granules with different granularities, densities or shapes generate different outflow speeds at the tail end of the platform and finally fall into different sub-bins of the collecting bin under the action of gravity; and granules with higher outflow speed fall into the farer sub-bin and granules with lower outflow speed fall to the nearer sub-bin, thereby fly ash granules with different parameters can be separated, granules in different sub-bins are separated products and the separated granules of certain sub bin can be separated in second stage or multistage by repeating the process. The invention has the advantages of simple structure, low energy consumption, high safe reliability, convenient installation and running, wide application range and the like.
Description
Technical field
The invention belongs to the flyash isolation technics, particularly a kind of separating method of fly ash and device thereof.
Background technology
Annual solid waste-the flyash of discharging a large amount of damage to the environments in coal-burning power plant, its storage and processing need the cost lot of manpower and material resources on the one hand, and it is again a kind of resource of supporting utilization on the other hand.Utilization of coal ash mainly comprises two aspects: the one, architectural engineering and agriculture field, with flyash as the raw material of producing building materials or improving the soil; The 2nd, from flyash, extract high value added product, like glass microballoon etc.Flyash is carried out lock out operation; With obtain a certain characteristic parameter particles such as particle diameter, density or shape comparatively the product of enrichment be the important channel that obtains high value added product; The pearl of wafing that the density that for example obtains through separation is lighter than water can be used for various application occasions (as being used to prepare intelligent self-repair material system etc.), and its market value is far above the original fly ash before separating.
Existing power plant ash disposal system has two types of hydraulic(-ash) sluicing and dried ash disposal, and the former water consumption is high, is prone to cause buck to pollute, and is unfavorable for total utilization of PCA, will be replaced by the latter gradually, and therefore flyash separation accordingly also will mainly depend on the dry method separation.The dry method separation mainly contains sieve method, pneumatic concentration, electrical concentration, magnetic method etc.Problems such as screen cloth obstruction appear in sieve method often at mass disposal flyash, functional reliability is not high.Pneumatic concentration adopts movement air flow to carry out the flyash separation as working media, is to use more a kind of method, and many concrete apparatus structure patterns are arranged.Electrical concentration and magnetic method only are applicable to certain conditions, and its energy consumption is also higher.As a whole, existing dry method isolation technics still can not satisfy the needs of flyash lock out operation in enormous quantities.
Summary of the invention
The object of the present invention is to provide a kind of separating method of fly ash and device thereof, separation process adopts gravity as power, and device structure is simple, move convenient and reliablely, and the few auxiliary external energy of needs only during operation can extend to multi-stage separation easily.
The technical solution that realizes the object of the invention is: a kind of separating method of fly ash; Dry flyash splashes down to the skewed slot ramped bottom surface after falling to the electromotive roller wheel surface of rotation in the hopper; On this ramped bottom surface, forming laminar flows under the gravity effect then; The skewed slot end face has a horizontal segment, the discharge velocity that the particle of different-grain diameter, density or shape varies in size in the terminal generation of horizontal segment, and finally drop in the different sub storehouse of collecting bin; Particle diameter is big, density is high or the particle discharge velocity of good sphericity is big; Drop down onto in the sub-storehouse far away, the particle that discharge velocity is little drops down onto in the near sub-storehouse, thereby realizes the separation of different parameters flyash particle; Particle in each sub-storehouse is the flyash of the different size after the separation, and the particle that perhaps will separate a certain sub-storehouse, back repeats above-mentioned separation process and carries out secondary separation or multi-stage separation.
A kind of flyash separator comprises hopper, skewed slot and collecting bin, and end entrance is equipped with the hopper feed valve on this hopper; The lower end connects chute feed valve and skewed slot successively; This skewed slot is made up of entrance, tilting section and horizontal segment, and the electronic running roller of power drives is housed in this skewed slot upper entrance section, and the standing part of this electronic running roller and the wall of skewed slot connect as one; The tilting section lower end connects a horizontal segment; This horizontal segment is terminal to connect as one with collecting bin, and this collecting bin bottom is provided with at least two sub-storehouses, and each bottom, sub-storehouse is installed a bleeder valve respectively; Skewed slot tilting section and horizontal segment enlarge perpendicular to the sectional area that flyash flows to gradually, and the dividing plate that flows to along flyash is set on tilting section bottom surface and the horizontal segment bottom surface, and flyash is flowed is divided into the sub-stream of equidistance; Dry flyash splashes down to the tilting section bottom surface of skewed slot after falling to the electromotive roller wheel surface of rotation in the hopper; On this tilting section bottom surface, forming laminar flows under the gravity effect then; The particle of different-grain diameter, density or shape is in the terminal discharge velocity that varies in size that produces of horizontal segment; Thereby and finally drop to the single-stage that realizes different parameters flyash particle in the different sub storehouse of collecting bin and separate, perhaps with a plurality of said apparatus formation multi-stage separation device that is cascaded.
The present invention compared with prior art; Its remarkable advantage is: (1) is adopted and to be contained the variable cross-section tilting section and separate the xeraphium coal ash with the skewed slot inclined surface laminar flows of horizontal segment, band dividing plate with how sub-storehouse collecting bin, and apparatus structure is simple, installation and operation is convenient, safety and the scope of application is wide, energy consumption is low; (2) product after the separation is easy to extend to multi-stage separation, can carry out secondary or multi-stage separation again to reach the product technology requirement that sets, and can be applicable to coal-burning power plant's flyash mass disposal.
Below in conjunction with accompanying drawing the present invention is described in further detail.
Description of drawings
Fig. 1 is flyash separator structural representation of the present invention (is example with the collecting bin that comprises 4 sub-storehouses).
Fig. 2 is the skewed slot diaphragm structure sketch map (is example with the skewed slot that comprises 3 dividing plates) of flyash separator of the present invention.
Fig. 3 is the A-A cutaway view of Fig. 2.
Fig. 4 is the terminal updip segment structure of the skewed slot horizontal segment sketch map of flyash separator of the present invention.
Among the figure: 1-hopper feed valve, 2-hopper, 3-chute feed valve, the electronic running roller of 4-, 5-power supply; The 6-skewed slot, 7-collecting bin, 8-first bleeder valve, 9-second bleeder valve, 10-the 3rd bleeder valve; 11-the 4th bleeder valve, 12-base plate, 13-first side plate, 14-second side plate; The 15-top board, 16-first dividing plate, 17-second partition, 18-the 3rd dividing plate
The specific embodiment
Separating method of fly ash of the present invention; Utilize the gravity effect to make thin layer flyash endways with flowing on the inclined surface of the skewed slot of horizontal segment; The flyash particle of different-grain diameter, density or surface configuration produces different flow rate in the skewed slot outlet; Produce different drop points after falling into collecting bin, promptly fall under gravity into the sub-storehouse of different collecting bins, realize the separation of flyash particle.Particularly; Dry flyash splashes down to the skewed slot ramped bottom surface after falling to the electromotive roller wheel surface of rotation in the hopper, on this ramped bottom surface, is forming laminar flows under the gravity effect then, and the skewed slot end face has a horizontal segment; The particle of different-grain diameter, density or shape is in the terminal discharge velocity that varies in size that produces of horizontal segment; And finally drop in the different sub storehouse of collecting bin, particle diameter is big, density is higher or the better particle discharge velocity of sphericity is bigger, drops down onto in the sub-storehouse far away; The less particle of discharge velocity drops down onto in the nearer sub-storehouse; Thereby realize the separation of different parameters flyash particle, the particle in each sub-storehouse is the flyash of the different size after the separation, and the particle that perhaps will separate a certain sub-storehouse, back repeats above-mentioned separation process and carries out secondary separation or multi-stage separation.Wherein, when flyash flows downward on skewed slot inner inclination bottom surface,, make in skewed slot horizontal segment exit the flyash thickness of feed layer less than 1mm through control chute feed valve opening.
In conjunction with Fig. 1, flyash separator of the present invention comprises hopper 2, skewed slot 6 and collecting bin 7; End entrance is equipped with hopper feed valve 1 on this hopper 2, and the lower end connects chute feed valve 3 and skewed slot 6 successively, and this skewed slot 6 is made up of entrance, tilting section and horizontal segment; The electronic running roller 4 that power supply 5 drives is housed in these skewed slot 6 upper entrance sections, and the wall of the standing part of this electronic running roller 4 and skewed slot 6 connects as one, and the tilting section lower end connects a horizontal segment; This horizontal segment is terminal to connect as one with collecting bin 7; This collecting bin 7 bottoms are provided with at least two sub-storehouses, and each bottom, sub-storehouse is installed a bleeder valve respectively, and the cross sectional shape in sub-storehouse is up big and down small trapezoidal.Skewed slot 6 tilting sections and horizontal segment enlarge (angle of flare maximum is no more than 60 degree) gradually perpendicular to the sectional area that flyash flows to, and the dividing plate that flows to along flyash is set on tilting section bottom surface and the horizontal segment bottom surface, and flyash is flowed is divided into the sub-stream of equidistance; Dry flyash splashes down to the tilting section bottom surface of skewed slot 6 after falling to electronic running roller 4 surfaces of rotation in the hopper 2; On this tilting section bottom surface, forming laminar flows under the gravity effect then; The particle of different-grain diameter, density or shape is in the terminal discharge velocity that varies in size that produces of horizontal segment; Thereby and finally drop to the single-stage that realizes different parameters flyash particle in the different sub storehouse of collecting bin 7 and separate; Perhaps a plurality of said apparatus are cascaded, inlet forms multi-stage separation device thereby promptly arbitrary sub-storehouse is connected to the next stage hopper.In hopper 2 fill process, chute feed valve 3 cuts out, and hopper feed valve 1 opens to closes after charging is accomplished; In flyash separation flow process, hopper feed valve 1 cuts out, and the bleeder valve in all sub-storehouses cuts out, and chute feed valve 3 is opened, and flyash is by each the sub-storehouse that flows into skewed slot 6 and collecting bin 7 in the hopper 2 through this chute feed valve 3 downwards in order; In the discharging process, chute feed valve 3 cuts out, and the bleeder valve in sub-storehouse is opened, and the flyash in each sub-storehouse is discharged as the product after separating.
Wherein, the tilting section of skewed slot 6 and the angle of horizontal direction are greater than 0 less than 90 degree, and its tilting section and horizontal section length are decided according to reality requirement, are not less than 1mm like horizontal section length.The end of skewed slot 6 horizontal segments can have one section updip section, and this updip segment length maximum is no more than the half the of horizontal segment, and the inclination angle maximum is no more than 30 degree, like Fig. 4.
Embodiment combines Fig. 1 (with collecting bin 4 sub-storehouses being arranged is example); Realize the flyash separator of above-mentioned separation method, comprise inlet valve 1, hopper 2, chute feed valve 3, electronic running roller 4, power supply 5, skewed slot 6, collecting bin 7, first to the 4th bleeder valve 8 to 11, flyash is sent into hopper 2 by the outside through inlet valve 1 and is stored; When chute feed valve 3 is opened; Flyash in the hopper 2 drops down onto electronic running roller 4 surfaces of rotation earlier under the gravity effect, splash down then to the ramped bottom surface of skewed slot 6 and continue to flow above that, goes out the interruption-forming level in skewed slot 6 terminal horizontal sections and effluents; Drop down onto at last in the different sub storehouse of collecting bin 7, form the flyash stream.
The inlet valve 1 of flyash separator of the present invention should guarantee air-tightness after cutting out, promptly extraneous air can not bleeder.The aperture of chute feed valve 3 can adopt manual or electronic mode to regulate, and the aperture of regulating this chute feed valve 3 in the device course of work guarantees that the terminal flyash thickness of feed layer of skewed slot 6 outlet horizontal segments less than 1mm, promptly forms so-called laminar flows.Electronic running roller 4 is connected with power supply 5 through electric wire, and energized 5 electronic running rollers 4 rotate by direction shown in Figure 1.
The skewed slot 6 of flyash separator of the present invention comprises entrance, tilting section and horizontal segment; Electronic running roller 4 is housed in the entrance; This electronic running roller 4 is fixed on the entrance, and tilting section inner bottom surface inclination angle is between the 0-90 degree, and horizontal section length is not less than 1mm; Skewed slot tilting section and horizontal segment sectional area enlarge gradually; Skewed slot 6 is made up of base plate 12, top board 15, first side plate 13 and second side plate 14, longshore current is set to having a dividing plate at least on the base plate 12 of tilting section bottom surface and horizontal segment, and flyash is flowed is divided into the sub-stream of some equidistance.When being three like dividing plate; I.e. first to the 3rd dividing plate 16,17,18; The height of first to the 3rd dividing plate 16-18 is not less than 3mm; Be not more than distance or the height of first side plate 13 and second side plate 14 between bottom surface 12 and the top board 15, first to the 3rd dividing plate 16-18 spacing is identical and equal distance and the distance between the 3rd dividing plate 18 and second side plate 14 between first dividing plate 16 and first side plate 13.The another kind of structure of skewed slot 6 horizontal segments is: this horizontal segment end has one section updip section, and this updip segment length maximum is no more than the half the of horizontal segment, and the inclination angle maximum is no more than 30 degree.Skewed slot 6 can adopt any suitable engineering material (like steel, glass, plastics etc.) manufacturing, and the entrance of this skewed slot 6, tilting section and horizontal segment will guarantee smooth transition when being connected, and connection can be adopted any method that is suitable for material therefor.
The collecting bin 7 of flyash separator of the present invention is made up of a plurality of sub-storehouses (is example with 4), and each Zi Cang cross section is up big and down small trapezoidal, and this collecting bin 7 can adopt any suitable engineering material.Bleeder valve should guarantee air-tightness like first to the 4th bleeder valve 8 to 11 after cutting out, promptly extraneous air can not bleeder.
The present invention is applicable to that dry flyash separates.
Like Fig. 1, Fig. 2 and shown in Figure 3, separating method of fly ash and device embodiments: be fed to discharging from the flyash of drying, the course of work of one-period comprised with the next stage:
1. charging stage:, do not have material in the separator in initial cold conditions.Close chute feed valve 3, open inlet valve 1, flyash is input hopper 2 from the outside, when material level reaches desired location, closes inlet valve 1.
2. separation phase: energized 5; Electronic running roller 4 rotates; Open chute feed valve 3 to setting aperture (guaranteeing that the terminal thickness of feed layer of skewed slot 6 horizontal segments is less than 1mm), flyash splashes down to skewed slot 6 bottom angled faces by falling in the hopper 2 on electronic running roller 4 surfaces then; And under the gravity effect, flow downward; Because particle diameter, density are different with surface configuration, in the terminal particle rapidity of effluenting that varies in size that produces of skewed slot 6 horizontal segments, the particle that speed is bigger falls into collecting bin 7 and exports sub-storehouse far away apart from skewed slot 6 horizontal segments; The less particle of speed falls into collecting bin 7 apart from the nearer sub-storehouse of skewed slot 6 horizontal segments outlets, and this process continues to flyash all in the hopper 2 all till each the sub-storehouse through separated flow entering collecting bin 7.
3. discharging stage: open first to the 4th bleeder valve 8 to 11, fall into the outside collection container of device through the flyash particle in collecting bin 7 each sub-storehouse of separating in the gravity effect and form the product after separating.
Can adopt with aforementioned identical method and apparatus and carry out secondary or multi-stage separation through separating the product obtain to reach the product technology requirement of setting.
Claims (6)
1. a flyash separator is characterized in that comprising hopper [2], skewed slot [6] and collecting bin [7], and this hopper [2] is gone up end entrance hopper feed valve [1] is housed; The lower end connects chute feed valve [3] and skewed slot [6] successively; This skewed slot [6] is made up of entrance, tilting section and horizontal segment, and the electronic running roller [4] that power supply [5] drives is housed in this skewed slot [6] upper entrance section, and the wall of the standing part of this electronic running roller [4] and skewed slot [6] connects as one; The tilting section lower end connects a horizontal segment; This horizontal segment is terminal to connect as one with collecting bin [7], and this collecting bin [7] bottom is provided with at least two sub-storehouses, and each bottom, sub-storehouse is installed a bleeder valve respectively; Skewed slot [6] tilting section and horizontal segment enlarge perpendicular to the sectional area that flyash flows to gradually, and the dividing plate that flows to along flyash is set on tilting section bottom surface and the horizontal segment bottom surface, and flyash is flowed is divided into the sub-stream of equidistance; Dry flyash splashes down to the tilting section bottom surface of skewed slot [6] after falling to electronic running roller [4] surface of rotation in the hopper [2]; On this tilting section bottom surface, forming laminar flows under the gravity effect then; The particle of different-grain diameter, density or shape is in the terminal discharge velocity that varies in size that produces of horizontal segment; And finally drop to collecting bin [7] thus the different sub storehouse in realize that the single-stage of different parameters flyash particle separates, perhaps with a plurality of said apparatus formation multi-stage separation device that is cascaded.
2. flyash separator according to claim 1, the angle of tilting section and horizontal direction that it is characterized in that skewed slot [6] greater than 0 less than 90 degree.
3. flyash separator according to claim 1 is characterized in that skewed slot [6] is made up of base plate [12], top board [15], first side plate [13] and second side plate [14], and it is first to the 3rd dividing plate [16 that the dividing plate that flows to along flyash is set on the base plate [12] of tilting section and horizontal segment; 17,18], first side plate [13], first to the 3rd dividing plate [16; 17; 18] spacing is identical and between second side plate [14], this first to the 3rd dividing plate [16,17; 18] height is not less than 3mm, is not more than distance or the height of first side plate [13] and second side plate [14] between base plate [12] and the top board [15].
4. flyash separator according to claim 1 is characterized in that the end of skewed slot [6] horizontal segment has one section updip section, and this updip segment length maximum is no more than the half the of horizontal segment, and the inclination angle maximum is no more than 30 degree.
5. flyash separator according to claim 1, the cross sectional shape that it is characterized in that sub-storehouse are up big and down small trapezoidal.
6. flyash separator according to claim 1 is characterized in that chute feed valve [3] cuts out in hopper [2] fill process, and hopper feed valve [1] opens to closes after charging is accomplished; In flyash separation flow process, hopper feed valve [1] cuts out, and the bleeder valve in all sub-storehouses cuts out, and chute feed valve [3] is opened, and flyash is by each the sub-storehouse that flows into skewed slot [6] and collecting bin [7] in the hopper [2] through this chute feed valve [3] downwards in order; In the discharging process, chute feed valve [3] cuts out, and the bleeder valve in sub-storehouse is opened, and the flyash in each sub-storehouse is discharged as the product after separating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910025849A CN101829653B (en) | 2009-03-11 | 2009-03-11 | Separating method of fly ash and device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910025849A CN101829653B (en) | 2009-03-11 | 2009-03-11 | Separating method of fly ash and device thereof |
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| Publication Number | Publication Date |
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| CN101829653A CN101829653A (en) | 2010-09-15 |
| CN101829653B true CN101829653B (en) | 2012-10-03 |
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| CN200910025849A Expired - Fee Related CN101829653B (en) | 2009-03-11 | 2009-03-11 | Separating method of fly ash and device thereof |
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| CN115178464B (en) * | 2022-05-30 | 2024-01-09 | 中南大学 | Sorting device and sorting process for waste power batteries |
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| CN1053566A (en) * | 1989-11-23 | 1991-08-07 | 一信产业株式会社 | The device of sort talc |
| CN1289652A (en) * | 2000-10-30 | 2001-04-04 | 华电环保系统工程有限公司 | Quickly loaded separating system of powdered coal ash |
| CN101365547A (en) * | 2006-11-20 | 2009-02-11 | 日立金属株式会社 | Single ball separating device and single ball separating method |
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- 2009-03-11 CN CN200910025849A patent/CN101829653B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| CN1053566A (en) * | 1989-11-23 | 1991-08-07 | 一信产业株式会社 | The device of sort talc |
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| CN101365547A (en) * | 2006-11-20 | 2009-02-11 | 日立金属株式会社 | Single ball separating device and single ball separating method |
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| JP特开平11-319728A 1999.11.24 |
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Granted publication date: 20121003 Termination date: 20170311 |