CN102773170B - Plug-flow aeration type fuel ash flotation separation equipment - Google Patents
Plug-flow aeration type fuel ash flotation separation equipment Download PDFInfo
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- CN102773170B CN102773170B CN201210258157.5A CN201210258157A CN102773170B CN 102773170 B CN102773170 B CN 102773170B CN 201210258157 A CN201210258157 A CN 201210258157A CN 102773170 B CN102773170 B CN 102773170B
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Abstract
The invention provides a kind of plug-flow aeration type fuel ash flotation separation equipment, it comprises: the cylindrical shell vertically arranged; Overflow gathering apparatus, it is arranged at the outside of the epimere of cylindrical shell, and its bottom is provided with discharging opening; Tail ash gathering-device, it is arranged at the bottom of cylindrical shell, and it is provided with the outlet of tail ash; Charging part flow arrangement, it is positioned at above overflow gathering apparatus, and its underpart or bottom are provided with many blanking pipelines; Aerator, it comprises bubble diffusing apparatus; This bubble diffusing apparatus comprises multiple gas diffusion hole for bubble spilling or gas diffusion tube; Plug flow device, it is positioned at below bubble diffusing apparatus, and the top of bubble diffusing apparatus is pointed in its plug-flow direction.The present invention does not need to arrange physics column plate, structure is simple, cheap for manufacturing cost; Power consumption is little, greatly saves the energy; Its pharmaceutical quantities used is less; Utilize floatation equipment of the present invention, the ash content in the high charcoal ash that flotation obtains can be down to about 10%, improves flotation effect, obtains the high charcoal ash that phosphorus content is higher.
Description
Technical field
The present invention relates to the flotation of flyash, more particularly, the present invention relates to a kind of plug-flow aeration type fuel ash flotation separation equipment.
Background technology
Coal-burning power plant is by coal burning boiler to proceed electricity generation, and produce a large amount of flue gases when coal-burning boiler runs, from this flue gas, isolated dust is exactly flyash.Along with the development of power industry, the flyash discharge capacity of coal-burning power plant increases year by year.The unburned carbon granule contained in flyash, after flotation, can be used as the raw material manufacturing active carbon.
Chinese patent 200810031474.7 discloses a kind of flotation pillar special for fly ash, at flotation column cylindrical shell top, pulp distributer is housed, multilayer bubbling plate is established in cylindrical shell, multiple spot swirl-flow devices and multiple spot tail ash spout hole are established in cylindrical shell bottom, pulp distributer peripheral devices ore pulp distributing pipe, around device circulating line, circulating line upper end and ore pulp distributing pipe connect, lower end and swirl-flow devices connect, ore pulp distributing pipe interface is connected circulating pump two ends respectively with feed inlet and outlet, the high charcoal balanced overflow plate of ash and high charcoal ash overflow collection mouth are also housed on flotation column top, tail ash spout hole is connected and installed with tail ash automatic control stuff box by pipeline.
Chinese patent 200920064391.8 discloses a kind of floatation column special for circulating fluidized, at top, pulp distributer is housed, inside establish multilayer bubbling plate, multiple spot swirl-flow devices is established in bottom, bottom is connected and installed taper tail ash feeder, pulp distributer peripheral devices ore pulp distributing pipe, peripheral device circulating line, ore pulp distributing pipe connects circulating pump, the high charcoal balanced overflow plate of ash is also housed on flotation column top and collects mouth, the tail ash tube road that taper tail ash its bottom of feeder connects is connected to tail ash automatic control stuff box.
Chinese patent 200920261379.6 discloses the stirring floatation equipment that a kind of garbage microwave pyrolysis produces active carbon use; This stirring floatation equipment comprises: body part F, power section G and stirring flotation part H.Body part F comprises: stir flotation cylinder, frame, the outlet of flotation thing and mixture outlet, power section G comprises: stir flotation motor and stir flotation axle, stirs flotation motor and is fixedly installed in described frame, stirs flotation motor and is connected with stirring flotation axle.Stir flotation part H to comprise: stirring vane and flotation blade, stirring vane is fixedly installed on bottom described stirring flotation axle, and flotation blade is fixedly installed on described stirring flotation axle top.
Chinese patent 200920063583.7 discloses the new equipment that a kind of flyash produces active carbon, comprises the former ash of the flyash connected successively and enters ash bucket, electronic measuring scale, box-type ash remover, ore pulp preprocessor, first order flotation column, second level flotation column, the first thickener, the first filter, the first dryer, active carbon Special grinding, oil water separator, the second dryer; Ore pulp preprocessor and second level flotation column are also connected with the automatic medicament feeding machine of dispersant and composite floating chemical, and active carbon Special grinding is also connected with high steam pipeline.
Chinese patent 200820046239.2 discloses a kind of flyash flotation carbon process units, flyash flotation carbon process units comprise can screen flyash granularity screening module, stir module, can cleaned coal and tail ash content from flotation module, dewatering module and with upper module successively organic connections conveying mechanism integrally.
Above-mentioned disclosed floatation equipment all uses physics column plate, and its complex structure, material cost and processing cost are high, power consumption large, flotation agent consumption is large, and flotation effect is undesirable.
Summary of the invention
For the shortcoming of prior art, the object of this invention is to provide and a kind ofly do not use that physics column plate, structure are simple, cheap for manufacturing cost, power consumption is little, flotation agent consumption is little and the flotation separation equipment that flotation effect is good.
To achieve these goals, the invention provides a kind of plug-flow aeration type fuel ash flotation separation equipment, it comprises: the cylindrical shell vertically arranged, and floatation process occurs in this cylindrical shell; Overflow gathering apparatus, for collecting the high particle of the carbon content that floatingly selects, it is arranged at the outside of the epimere of cylindrical shell, and its bottom is provided with discharging opening; Tail ash gathering-device, it is arranged at the bottom of cylindrical shell, and it is provided with the outlet of tail ash; Charging part flow arrangement, for make material enter cylindrical shell before shunt, it is positioned at above overflow gathering apparatus, and its underpart or bottom are provided with many blanking pipelines; Aerator, for producing bubble to promote floatation process in cylindrical shell, it comprises bubble diffusing apparatus; This bubble diffusing apparatus is positioned at cylindrical shell, and is positioned at the below of blanking pipeline bottom, and it comprises multiple gas diffusion hole for bubble spilling or gas diffusion tube; Plug flow device, it is positioned at cylindrical shell and the space that surrounds of tail ash gathering-device, and it is positioned at below bubble diffusing apparatus, and the top of bubble diffusing apparatus is pointed in its plug-flow direction, and with the plane orthogonal at multiple gas diffusion hole or gas diffusion tube place.
In the present invention, aerator is for producing bubble in the working solution of liquid or liquid-solid mixing.It both can be various blast aerator, such as (micro-) stingy alveolitoid, middle air bubble type, air alveolitoid, hydraulic shear type, hydraulic blow type blast aerator; Can be again various Mechanical aerator, such as pump-type impeller aerator, K type impeller aerator, inversed umbrella type impeller aerator and plate impeller aerator etc.; Also can be the aerator of other type.It is preferably blast aerator conventional in sewage disposal, such as hydraulic shear type air-diffuser, it can utilize the construction features of device itself, produce hydraulic shear effect, air pocket is cut into minute bubbles, increasing gas liquid interfacial area, reaching the object of raising the efficiency, as determined spiral aerator etc.
In the present invention, bubble diffusing apparatus can be the concentric tube interconnected between the tabular of hollow, bend pipe, parallel pipe, coil pipe or adjacent channel, which is provided with multiple gas diffusion hole of overflowing for bubble or gas diffusion tube; Also can be multiple above-mentioned platy structure or tubular structure be arranged in parallel up and down.
In the present invention, when bubble diffusing apparatus overflows bubble by gas diffusion tube, the plurality of body anemostat can direction straight up as one man, also can be set to separately point to top or oblique upper with different angles, form turbulent flow to make the material in flotation cells.By making the gas upwards blowed be turbulent condition, the time of contact of carbon granule and bubble is long, and contact is more abundant, and the probability that fly ash grain is broken for carbon granule and ash particles increases greatly, thus makes flotation effect better, and flotation efficiency is higher.
In the present invention, plug flow device can be diving mixer, submersible agitator, submersible water impeller etc. for sewage disposal, the submersible agitator that such as power is 2.2KW, impeller diameter is 320 millimeters.It points to the top of bubble diffusing apparatus, and its Main Function to be positioned at the material plug-flow upward of cylindrical shell bottom, utilizes the different specific weight of variable grain in material, the particle layering making phosphorus content different; Coordinate other structure or setting simultaneously, the circulation of cylindrical shell inner fluid can be realized.According to material and the duty parameter of flotation, one or more plug flow device can be set.
In the present invention, the plug-flow direction of plug flow device is for along the axial of plug flow device impeller and the direction of fluid flowing that promotes of plug flow device.By the top of the material movement to bubble diffusing apparatus that make cylindrical shell bottom, make the flotation that it carries out again.
Operation principle of the present invention is: the main component of flyash is carbon granule and ash content.After adding flotation agent and/or collecting agent and/or other auxiliary agent, the particle in flyash and bubble contact, collision, the carbon granule that floatability is good optionally adheres to bubble, and is carried rising, realizes flotation.The ash content of floatability difference is then to sinking.
Workflow of the present invention is: the powdered coal ash in charging part flow arrangement and many blanking pipelines of the mixture of flotation agent through being positioned at charging part flow arrangement bottom or bottom enter cylindrical shell.The gas diffusion hole of bubble diffusing apparatus or gas diffusion tube are vented in cylindrical shell, and carbon granule adheres to bubble four and falls apart floating and move upward under the effect of flotation agent, realizes the flotation of carbon granule.The particle falling cylindrical shell bottom is got back to above bubble diffusing apparatus under the promotion of plug flow device, carries out flotation again.The carbon granule floatingly selected is collected in overflow gathering apparatus.The ash content of floatability difference then falls tail ash gathering-device.
In the present invention, plug flow device produces thrust upwards or obliquely.Carbon granule proportion in flyash is less, and the impact by this thrust is large, and up stroke is larger; Correspondingly, the ash content proportion in flyash is comparatively large, and the impact by this thrust is little, and up stroke is less; Thus, under the thrust of plug flow device, the particle specific gravity that phosphorus content is higher is less, is positioned at upper strata; The particle specific gravity that phosphorus content is lower is comparatively large, is positioned at lower floor or bottom.Thus achieve the layering of different specific weight particle in flyash, and avoid the use of physics column plate (flotation version), simplify device structure, greatly save equipment cost.
Because aerator and plug flow device all can be outsourcing piece, floatation equipment of the present invention does not arrange flotation plate, mortar pump simultaneously, and not only structure is simple to make floatation equipment of the present invention, and reduces manufacturing cost; Secondly, because floatation equipment of the present invention does not use mortar pump, the power consumption of plug flow device and aerator is very little, thus greatly saves the energy; In addition, utilize floatation equipment of the present invention, the ash content in the high charcoal ash that flotation obtains can be down to about 10%, improves flotation effect, obtains the high charcoal ash that phosphorus content is higher.
According to the embodiment of the invention, plug flow device is positioned at the intersection of cylindrical shell inner bottom part, tail ash gathering-device or cylindrical shell and tail ash gathering-device.
According to another detailed description of the invention of the present invention, aerator is blast aerator, and it comprises wind and send device, gas transmission pipeline, bubble diffusing apparatus, and this wind send device to be connected with bubble diffusing apparatus by gas transmission pipeline.According to another detailed description of the invention of the present invention, the gas diffusion hole of bubble diffusing apparatus or the number of gas diffusion tube are 3-15, and are divided into multilayer to arrange.
According to another detailed description of the invention of the present invention, bubble diffusing apparatus comprises 8 gas diffusion holes or gas diffusion tube, these 8 gas diffusion holes or gas diffusion tube are divided staggered two-layer up and down, 4 every layer, and the angle between adjacent two gas diffusion holes of same layer or gas diffusion tube is 90 °.
According to another detailed description of the invention of the present invention, wind send device to can be air-blast device (such as air blast) or air compression plant (such as air compressor).Such as, a capacity is 6m
3/ min, pressure are 0.7MPa, power is the air compressor of 37KW, can for three fuel ash flotation separation equipments of the present invention simultaneously.
According to another detailed description of the invention of the present invention, be provided with many circulating lines longitudinally arranged outside the sidewall of cylindrical shell, the two ends of circulating line are all communicated with cylindrical shell fluid.By arranging circulating line, for the fluid in cylindrical shell provides circulating path, enhance the effect of flow circuit, and then realize the repeatedly flotation of material in cylindrical shell.The height of circulating line is 1.2 meters-3 meters, is preferably 1.5 meters-2 meters; The number of circulating line is 2-12 bar, is preferably 4-8 bar.According to another detailed description of the invention of the present invention, bubble diffusing apparatus is a little more than the bottom of circulating line.
According to another detailed description of the invention of the present invention, plug flow device has multiple, and it is positioned at same level, and angle between adjacent plug flow device is identical.Such as, plug flow device has three, and it is positioned at same level, and the angle between adjacent plug flow device is 120 °; And for example, plug flow device has four, and it is positioned at same level, and the angle between adjacent plug flow device is 90 °.
According to another detailed description of the invention of the present invention, cylindrical shell is cylinder or square tube.The corner of square tube can form reflection, and the distribution of particle in cylinder and bubble is more even.
According to another embodiment of the present invention, flotation separation equipment also can comprise be positioned at flotation separation equipment barrel or bubble diffusing apparatus on physical separation means.By arranging physical separation means, effectively breaking the combination between carbon granule and ash content, substantially increasing the flotation rate of carbon.This physical separation means specifically can be ultrasonic separation means or ultrasonicly broken in bulkly to put, and improving the stripping of carbon granule and ash content, such as, forming granularity and reaching the ultra-fine carbon granule of 10,000 objects by launching ultrasonic wave.Specifically, this ultrasonic separation means or ultrasonic broken in bulk putting comprise ultrasonic transmitter and supporting servicing unit.
According to another embodiment of the present invention, overflow gathering apparatus is positioned at the outside of the epimere of cylindrical shell, and its bottom is lower than the top of cylindrical shell, and for collecting the particle overflowed from flotation section, the bottom of overflow gathering apparatus is provided with discharging opening; Such as, overflow gathering apparatus can be hydrostatic column porose on base plate, and the top of cylindrical shell passes from the hole its base plate, and like this, the particle floatingly selected in cylindrical shell is constantly upwards piled up, and just crosses barrel and flows in overflow gathering apparatus; And for example, the top exterior walls of cylindrical shell is provided with spout hole or overflow pipe, and overflow gathering apparatus is be positioned at the container below this spout hole or overflow pipe.
According to another embodiment of the present invention, tail ash gathering-device is that the cone of pointed end is bucket-shaped, and tail ash exports the tip place be positioned at bottom it.The outlet of tail ash connects tail ash tube road, and such as, the height of the end in this tail ash tube road is positioned on top layer flotation plate.Further, the end in tail ash tube road is provided with the liquid level regulation apparatus regulating liquid level in floatation separator, this liquid level regulation apparatus specifically can comprise: be inserted in the tubule in tail ash tube road, and the external diameter of this tubule is consistent with the internal diameter in tail ash tube road, and the sidewall on this tubule top is provided with multiple hole; Be connected to the screw mandrel that tubule also can adjust tubule height.Wherein, in the screw mandrel sidewall that can be fixedly connected on tubule or its capping.
Tail ash in tail ash tube road flows out from the hole tubule sidewall, by regulating the height in hole on tubule sidewall, can regulate the liquid level in floatation separator.Specifically, screw mandrel is provided with swing handle, by rotating swing handle, screw mandrel is rotated, thus drives the tubule be inserted in tail ash tube road to move up and down.
According to another embodiment of the present invention, also comprise tail ash bin, tail ash bin is positioned at the end in tail ash tube road, and is enclosed within outside tail ash tube road, and bottom or the bottom of tail ash bin have ash discharging hole.
According to another embodiment of the present invention, flotation separation equipment also comprises feed preparing device, and bottom or the bottom of this feed preparing device are provided with charging line, and this charging line leads to charging part flow arrangement.Treat that the flyash of flotation adds the chemical agents such as flotation agent in feed preparing device, the charging line of bottom or bottom then through being positioned at feed preparing device enters charging part flow arrangement.Agitating device can be provided with, for powdered coal ash slurry and flotation agent fully being stirred in feed preparing device.Charging line is provided with Pulp pump, for by the material pumping in feed preparing device in charging part flow arrangement.
According to another embodiment of the present invention, in cylindrical shell, the top of tail ash gathering-device can arrange filter, to slow down the downstream rate of material.
Compared with prior art, the present invention has following beneficial effect:
In the present invention, plug flow device produces thrust upwards or obliquely.Carbon granule proportion in flyash is less, and the impact by this thrust is large, and up stroke is larger; Correspondingly, the ash content proportion in flyash is comparatively large, and the impact by this thrust is little, and up stroke is less; Thus, under the thrust of plug flow device, the particle specific gravity that phosphorus content is higher is less, is positioned at upper strata; The particle specific gravity that phosphorus content is lower is comparatively large, is positioned at lower floor or bottom.Thus achieve the layering of different specific weight particle in flyash, and avoid the use of physics column plate (flotation version), simplify device structure, greatly save equipment cost.Because aerator and plug flow device all can be outsourcing piece, floatation equipment of the present invention does not arrange flotation plate, mortar pump simultaneously, and not only structure is simple to make floatation equipment of the present invention, and reduces manufacturing cost; Secondly, because floatation equipment of the present invention does not use mortar pump, the power consumption of plug flow device and aerator is very little, thus greatly saves the energy; Meanwhile, the pharmaceutical quantities (flotation agent) fewer than the floatation equipment of prior art about 50% that uses of floatation equipment of the present invention; In addition, utilize floatation equipment of the present invention, the ash content in the high charcoal ash that flotation obtains can be down to about 10%, improves flotation effect, obtains the high charcoal ash that phosphorus content is higher.
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representations of embodiments of the invention 1 along the longitudinal section of its axis;
Fig. 2 is the structural representation of embodiments of the invention 1 one cross section, which show the setting of 8 gas diffusion tube, and wherein triangle representative is positioned at 4 gas diffusion tube on upper strata, and square representative is positioned at 4 gas diffusion tube of lower floor;
Fig. 3 is the structural representation of another cross section of embodiments of the invention 1, which show the setting of plug flow device;
Fig. 4 is the structural representation of the liquid level regulation apparatus of embodiments of the invention 1.
Detailed description of the invention
Embodiment 1
As shown in Figure 1, the flotation separation equipment of the present embodiment comprises: feed preparing device 1, charging part flow arrangement 2, the cylinder 3 vertically arranged, aerator (such as blast aerator), plug flow device (such as submersible agitator 6), overflow gathering apparatus 7, tail ash gathering-device 8, liquid level regulation apparatus 9.
Agitating device 101 is provided with, for powdered coal ash slurry and flotation agent fully being stirred in feed preparing device 1.The bottom of feed preparing device 1 is provided with charging line 102, and charging line 102 is provided with Pulp pump 103, and this charging line 102 leads to charging part flow arrangement 2.
Charging part flow arrangement 2 is positioned at above overflow gathering apparatus 7, and its underpart is provided with many (such as 6) blanking pipelines 201.The end of blanking pipeline 201 is positioned within cylinder 3, on bubble diffusing apparatus 4.
The sidewall of the cylinder 3 of vertical setting is provided with many (such as 4) longitudinal circulating line 301 arranged, and the two ends of circulating line 301 are all communicated with cylinder 3 fluid.The height of circulating line 301 is 1.5 meters.
Blast aerator comprises wind and send device (such as air compressor 5), gas transmission pipeline 501, bubble diffusing apparatus 4, bubble diffusing apparatus 4 comprises 8 gas diffusion tube, these 8 gas diffusion tube are divided staggered two-layer up and down, 4 every layer, the angle between adjacent two gas diffusion tube of same layer is 90 °.As shown in Figure 2, triangle representative is positioned at 4 gas diffusion tube 401 on upper strata, and square representative is positioned at 4 gas diffusion tube 402 of lower floor.Bubble diffusing apparatus 4 is connected with the air compressor 5 be positioned at outside cylindrical shell by gas transmission pipeline 501, and gas transmission pipeline 501 is provided with flowmeter 502.
The capacity of air compressor 5 is 6m
3/ min, pressure are 0.7MPa, power is 37KW, can for the fuel ash flotation separation equipment of three playscript with stage directions embodiments simultaneously.
Submersible agitator 6 has three, and its power is 2.2KW, impeller diameter is 320 millimeters, and it is positioned at cylinder 3 and the space that surrounds of tail ash gathering-device 8, and is positioned at the below of bubble diffusing apparatus 4.Specifically, it is positioned at the intersection of cylinder 3 and tail ash gathering-device 8.Its plug-flow direction be straight up, perpendicular to the plane that every layer of gas diffusion tube is formed.As shown in Figure 3, three submersible agitators 6 are positioned at same level (plane lower than the place, lower end of circulating line 301), and the angle between adjacent submersible agitator 6 is 120 °.
Overflow gathering apparatus 7 is positioned at the outside of cylindrical shell 3 epimere, and the top of cylinder 3 epimere is between the top and bottom of overflow gathering apparatus 7; In addition, the bottom of overflow gathering apparatus 7 is provided with discharging opening 701.
Tail ash gathering-device 8 is that the cone of pointed end is bucket-shaped, and its bottom tip place is provided with tail ash outlet 801, and tail ash outlet 801 is connected with tail ash tube road 802.The end in this tail ash tube road 802 is more lower slightly than the top of cylinder 3, to adjust the liquid level in cylinder 3.The end in tail ash tube road 802 is provided with liquid level regulation apparatus 9(as shown in Figure 4), the screw mandrel 904 that liquid level regulation apparatus 9 comprises the tubule 901 be inserted in tail ash tube road 802, is fixedly connected on the capping 903 on tubule 901 top, is fixedly connected on capping 903 top, wherein the external diameter of tubule 901 is consistent with the internal diameter in tail ash tube road 802, and the sidewall on tubule 901 top is provided with multiple elongated hole 902; Screw mandrel 904 is provided with swing handle 905, by rotating swing handle 905, screw mandrel 904 is rotated, thus drives the tubule 901 be inserted in tail ash tube road 802 to move up and down, and the height of the elongated hole 902 flowed out by regulating tail ash regulates the liquid level in cylinder 3.Tail ash bin is positioned at the end in tail ash tube road 802, and is enclosed within outside tail ash tube road 802, and the bottom of tail ash bin has ash discharging hole.
In the present embodiment, the power consumption unit that the mixed material in floatation equipment is moved upward is air compressor (37KW/ platform) and three submersible agitators (2.2KW/ platform).Wherein air compressor is that three flotation separation equipments share, and single FLOTATION SEPARATION sets institute's wasted work rate as, 37KW/3=12.3KW; Three submersible agitator institute wasted work rates are 2.2KW × 3=6.6KW, so the present embodiment makes the institute's wasted work rate that moves upward of the mixed material in floatation equipment be 12.3+6.6=18.9KW.In order to reach identical effect, the flotation separation equipment institute wasted work rate of the use Venturi tube of approximately same volume is 55KW.
The pharmaceutical quantities that the floatation equipment of the present embodiment uses reduces about 50% than prior art.
Content of ashes in the high charcoal ash obtained by the flotation of the present embodiment is about 10%, and the content of ashes in the high charcoal ash that the flotation separation equipment flotation of prior art obtains is about 30%.
Embodiment 2
Embodiments of the invention 2 are with the difference of embodiment 1: 1, the number of blanking pipeline is 8; 2, the height of circulating line is 2 meters; 3, cylindrical shell is square tube body; 4, submersible agitator has four, and the angle between adjacent submersible agitator is 90 °.
In the present embodiment, the power consumption unit that the mixed material in floatation equipment is moved upward is: air compressor (37KW/ platform) and three submersible agitators (2.2KW/ platform).Wherein air compressor is that three flotation separation equipments share, and single FLOTATION SEPARATION sets institute's wasted work rate as, 37KW/3=12.3KW; Four submersible agitator institute wasted work rates are 2.2KW × 4=8.8KW, so the present embodiment makes the institute's wasted work rate that moves upward of the mixed material in floatation equipment be 12.3+8.8=21.1KW.In order to reach identical effect, the flotation separation equipment institute wasted work rate of the use Venturi tube of approximately same volume is 75KW.
The pharmaceutical quantities that the floatation equipment of the present embodiment uses reduces about 50% than prior art.
Content of ashes in the high charcoal ash obtained by the flotation of the present embodiment is about 10%, and the content of ashes in the high charcoal ash that the flotation separation equipment flotation of prior art obtains is about 30%.
Although the present invention discloses as above with preferred embodiment, and is not used to limit scope of the invention process.Any those of ordinary skill in the art, not departing from invention scope of the present invention, when doing a little improvement, namely every equal improvement done according to the present invention, should be invention scope of the present invention and contained.
Claims (9)
1., without a plug-flow aeration type fuel ash flotation separation equipment for flotation plate, it comprises:
The cylindrical shell of vertical setting;
Overflow gathering apparatus, it is arranged at the outside of the epimere of described cylindrical shell, and its bottom is provided with discharging opening;
Tail ash gathering-device, it is arranged at the bottom of described cylindrical shell, and it is provided with the outlet of tail ash;
Charging part flow arrangement, it is positioned at above described overflow gathering apparatus, and its underpart or bottom are provided with many blanking pipelines;
Aerator, it comprises bubble diffusing apparatus; Described bubble diffusing apparatus is positioned at described cylindrical shell, and is positioned at the below of described blanking pipeline bottom, and it comprises multiple gas diffusion hole for bubble spilling or gas diffusion tube;
Plug flow device, it is positioned at described cylindrical shell and the space that surrounds of described tail ash gathering-device, it is positioned at below described bubble diffusing apparatus, and the top of described bubble diffusing apparatus is pointed in its plug-flow direction, and with the plane orthogonal at described multiple gas diffusion hole or gas diffusion tube place;
Wherein, be provided with many circulating lines longitudinally arranged outside the sidewall of described cylindrical shell, the two ends of described circulating line are all communicated with described cylindrical shell fluid;
Described tail ash gathering-device is that the cone of pointed end is bucket-shaped, and the most advanced and sophisticated place that the outlet of tail ash is positioned at bottom it also connects tail ash tube road, and the end in this tail ash tube road is provided with the liquid level regulation apparatus regulating liquid level in flotation separation equipment.
2. flotation separation equipment as claimed in claim 1, wherein, described plug flow device is positioned at the intersection of described cylindrical shell inner bottom part, described tail ash gathering-device or described cylindrical shell and described tail ash gathering-device.
3. flotation separation equipment as claimed in claim 1, wherein, described aerator is blast aerator, and it comprises wind and send device, gas transmission pipeline, bubble diffusing apparatus, and described wind send device to be connected with described bubble diffusing apparatus by gas transmission pipeline.
4. flotation separation equipment as claimed in claim 3, wherein, the gas diffusion hole of described bubble diffusing apparatus or the number of gas diffusion tube are 3-15, and are divided into multilayer to arrange.
5. flotation separation equipment as claimed in claim 4, wherein, described bubble diffusing apparatus comprises 8 gas diffusion holes or gas diffusion tube, these 8 gas diffusion holes or gas diffusion tube are divided staggered two-layer up and down, 4 every layer, the angle between adjacent two gas diffusion holes of same layer or gas diffusion tube is 90 °.
6. flotation separation equipment as claimed in claim 3, wherein, described wind send device to be air-blast device or air compression plant.
7. flotation separation equipment as claimed in claim 1, wherein, the number of described circulating line is 2-12 bar.
8. flotation separation equipment as claimed in claim 1, wherein, described plug flow device has multiple, and it is positioned at same level, and angle between adjacent plug flow device is identical.
9. flotation separation equipment as claimed in claim 1, wherein, described plug flow device is diving mixing device.
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| CN201210258157.5A CN102773170B (en) | 2012-07-24 | 2012-07-24 | Plug-flow aeration type fuel ash flotation separation equipment |
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| CN201210258157.5A CN102773170B (en) | 2012-07-24 | 2012-07-24 | Plug-flow aeration type fuel ash flotation separation equipment |
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| CN102773170B true CN102773170B (en) | 2015-08-19 |
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|---|---|---|---|---|
| US1276753A (en) * | 1916-05-25 | 1918-08-27 | Frank Groch | Ore concentration. |
| US5182014A (en) * | 1990-05-30 | 1993-01-26 | Goodman Laurence R | Method and apparatus for increasing flotation cell recovery and grade of complex copper-containing ores |
| CN102240608A (en) * | 2011-06-10 | 2011-11-16 | 福建省龙岩龙能粉煤灰综合利用有限公司 | Coal ash flotation separation equipment provided with reflection cone gas dispersing device |
| CN202199430U (en) * | 2011-07-04 | 2012-04-25 | 福建省龙岩龙能粉煤灰综合利用有限公司 | Internal cycle type fly ash flotation separation device |
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