CN114798670B - Sorting system and method for coal ash nonporous floating beads - Google Patents
Sorting system and method for coal ash nonporous floating beads Download PDFInfo
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- CN114798670B CN114798670B CN202210454899.9A CN202210454899A CN114798670B CN 114798670 B CN114798670 B CN 114798670B CN 202210454899 A CN202210454899 A CN 202210454899A CN 114798670 B CN114798670 B CN 114798670B
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- 239000011324 bead Substances 0.000 title claims abstract description 401
- 238000007667 floating Methods 0.000 title claims abstract description 358
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000010883 coal ash Substances 0.000 title description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 110
- 239000010881 fly ash Substances 0.000 claims abstract description 58
- 238000000926 separation method Methods 0.000 claims abstract description 44
- 239000000463 material Substances 0.000 claims abstract description 23
- 230000009471 action Effects 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 239000011874 heated mixture Substances 0.000 claims abstract description 4
- 230000005291 magnetic effect Effects 0.000 claims description 112
- 239000002245 particle Substances 0.000 claims description 83
- 239000002956 ash Substances 0.000 claims description 73
- 229910052799 carbon Inorganic materials 0.000 claims description 48
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 44
- 238000005261 decarburization Methods 0.000 claims description 25
- 239000004071 soot Substances 0.000 claims description 14
- 230000005347 demagnetization Effects 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000007789 gas Substances 0.000 description 14
- 239000008187 granular material Substances 0.000 description 10
- 238000011084 recovery Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000012153 distilled water Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000004005 microsphere Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000005262 decarbonization Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000005294 ferromagnetic effect Effects 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000012716 precipitator Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011325 microbead Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
- B03C3/0175—Amassing particles by electric fields, e.g. agglomeration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/28—Plant or installations without electricity supply, e.g. using electrets
- B03C3/30—Plant or installations without electricity supply, e.g. using electrets in which electrostatic charge is generated by passage of the gases, i.e. tribo-electricity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a sorting system and a sorting method for non-porous floating beads of fly ash, which comprises a pretreatment unit, a floating bead rough sorting unit and a non-porous floating bead sorting unit which are sequentially connected, wherein the pretreatment unit decarbonizes and demagnetizes the fly ash; the floating bead rough separation unit comprises a floating bead rough separator connected with an outlet of the demagnetizing unit, and under the action of fans at the bottom and the side of the floating bead rough separator, a mixture of porous floating beads and non-porous floating beads in the pretreated material is separated; the nonporous floating bead sorting unit comprises a heater connected with the outlet of the floating bead roughing machine and a floating-sinking device connected with the outlet of the heater, and the wall surface of the floating-sinking device is connected with a condensing pipe; the temperature of water in the heater is increased to separate out gas in the porous floating beads, meanwhile, water vapor enters the porous floating beads, the floating and sinking device receives the heated mixture, the temperature is reduced to condense the water vapor in the porous floating beads to form negative pressure, the water is sucked into the floating and sinking device, the bottom of the floating and sinking device is provided with the porous floating beads which absorb water and sink, and the top of the floating and sinking device is provided with the nonporous floating beads which are in a floating state.
Description
Technical Field
The invention relates to the technical field of fly ash sorting, in particular to a sorting system and method for fly ash non-porous floating beads.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The fly ash is solid waste generated when coal powder is combusted in coal-fired thermal power plants, wherein the existing density of the fly ash is less than 1g/cm 3 The smooth spherical closed hollow glass micro-beads areThe hollow microsphere is named as 'floating microsphere', the floating microsphere is filled with gases such as nitrogen, oxygen, carbon dioxide and the like, has low specific gravity, smooth surface, high compressive strength, good fluidity, good thermal stability, high specific resistance and good chemical inertness, and can be used for manufacturing materials such as photocatalyst, adsorbent, light composite material, insulating material, heat-insulating material, concrete and the like. Therefore, the floating beads can be separated from the fly ash, and the recycling of solid wastes is realized.
The floating beads are obtained by a series of complex physical and chemical reactions in the combustion process of a coal-fired unit of a thermal power plant, and the obtained floating beads have 'porous floating beads' with incompletely-closed wall surfaces, and the density of the porous floating beads is still less than 1g/cm 3 When the floating bead sorting is realized by depending on the density in the prior art, the porous floating beads can be sorted together with the nonporous floating beads with perfect wall surfaces, and the quality of the floating beads can be influenced by the existence of the porous floating beads, so that the overall performance of the floating beads during recycling is reduced.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a system and a method for sorting non-porous floating beads of fly ash.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect of the invention, there is provided a system for sorting non-porous floating beads from fly ash, comprising:
the pretreatment unit comprises a decarburization unit connected with an outlet of an ash hopper for receiving the fly ash, and an outlet of the decarburization unit is connected with an inlet of the demagnetizing unit and is used for decarburization and demagnetization of the fly ash;
the floating bead rough separation unit comprises a floating bead rough separator connected with an outlet of the demagnetizing unit, and under the action of a bottom fan and a side fan of the floating bead rough separator, the mixture of the porous floating beads and the non-porous floating beads in the fly ash is separated, decarbonized and demagnetized and then sent into the non-porous floating bead separation unit;
the nonporous floating bead sorting unit comprises a heater connected with an outlet of the floating bead roughing machine and a sink-float device connected with the outlet of the heater, and the wall surface of the sink-float device is connected with a condensing pipe; the temperature of water in the heater is raised to separate out gas in the porous floating beads, and simultaneously, the water vapor enters the porous floating beads, the floating and sinking device receives the heated mixture, the temperature is lowered to condense the water vapor in the porous floating beads to form negative pressure to suck the water in the floating and sinking device, the bottom of the floating and sinking device is provided with the porous floating beads which absorb the water and the top of the floating and sinking device is provided with the nonporous floating beads which are in a floating state.
The bottom outlet of the ash bucket is connected with the decarburization unit through a pipeline, the bottom of the ash bucket is provided with an ash bucket fan, and the ash bucket fan is connected with the decarburization unit through a pipeline.
The decarburization unit comprises a friction electrification chamber connected with an outlet pipeline of the ash bucket fan, the friction electrification chamber is connected with an inlet of the carbon particle collection chamber through a pipeline, and a negative electrode rod and a positive electrode rod which are arranged in parallel are arranged in the carbon particle collection chamber; a soot channel is arranged in the space below the negative electrode rod, and a carbon particle channel is arranged in the space below the positive electrode rod; the ash particle channel and the carbon particle channel are respectively connected with the ash particle collector and the carbon particle collector.
The outlets of the ash particle collector and the carbon particle collector are respectively connected with an ash particle collector valve and a carbon particle collector valve; the ash particle collector is connected with the demagnetizing unit through an outlet pipeline of an ash particle collector valve, and an ash particle fan is connected to the outlet pipeline of the ash particle collector valve.
The demagnetizing unit comprises a magnetic bead trapping chamber connected to an outlet pipeline of the soot blower, a magnetic field generator is arranged in the magnetic bead trapping chamber, and an outlet at the bottom of the magnetic bead trapping chamber is respectively connected with a magnetic bead valve and a non-magnetic bead valve; an outlet pipeline of the magnetic bead valve is connected with a magnetic bead collector, and an outlet of the magnetic bead collector is connected with the magnetic bead collector valve; an outlet pipeline of the non-magnetic bead valve is connected with the non-magnetic bead collector, an outlet of the non-magnetic bead collector is connected with the non-magnetic bead collector valve, an outlet pipeline of the non-magnetic bead collector valve is connected with the non-magnetic bead fan, and an outlet pipeline of the non-magnetic bead fan is connected with the floating bead rough separation unit.
The floating bead rough separation unit comprises a floating bead rough separation machine, the floating bead rough separation machine is provided with an upper side wall and a lower side wall, the upper side wall and the lower side wall are connected together and are vertically arranged, the space inside of the upper side wall is provided with a fan, the top of the upper side wall is connected with an overflow port, and the overflow port is sequentially connected with a rough separation floating bead collector and a heater of a nonporous floating bead separation unit through a pipeline.
The upper side wall is connected with a disturbance fan through a pipeline, the lower side wall is connected with an outlet pipeline of a non-magnetic bead fan, and the outlet pipeline of the non-magnetic bead fan points to the rotation axis of the fan along the vertical direction to receive materials from the demagnetizing unit; the bottom of the lower side wall is provided with a bottom material port.
The top of the heater is connected with the rough flotation bead collector and a heater water pipe valve through a pipeline, the bottom of the heater is connected with the heater valve, the side wall of the heater is connected with the floating and sinking device through a heater water pump through a pipeline, water is contained in the heater, and the wall surface of the heater is connected with a heating wire.
The side wall of the floating and sinking device is respectively connected with a heater water pump and a floating and sinking device water pump through pipelines, the top of the floating and sinking device is connected with a water pipe valve of the floating and sinking device through a pipeline, a stirrer is arranged in the floating and sinking device, the wall surface of the floating and sinking device is connected with a condenser pipe, and the bottom outlet of the floating and sinking device is connected with a valve of the floating and sinking device; the water pump of the floating and sinking device is connected with the nonporous floating bead collector through a pipeline.
The bottom of the nonporous floating bead collector is connected with a nonporous floating bead collector water pump through a pipeline, and the outlet of the nonporous floating bead collector water pump is respectively connected with a water pipe valve of the sink-float device and a water pipe valve of the heater through pipelines.
The second aspect of the invention provides a method for sorting non-porous floating beads of fly ash based on the system, which comprises the following steps:
the fly ash is driven by an ash bucket fan and sent into a pretreatment unit for decarburization and demagnetization;
the pretreated materials enter a floating bead rough separation unit, and the separated sinking beads flow out from a bottom material port of the floating bead rough separation unit under the action of a bottom fan and a side fan of the floating bead rough separation unit to obtain a mixture of porous floating beads and nonporous floating beads, and the mixture is sequentially sent into a heater and a floating and sinking device of the nonporous floating bead separation unit;
the heater of the nonporous floating bead sorting unit heats water contained inside, so that gas inside the porous floating beads is separated out, and water vapor enters the porous floating beads;
the water in the floating and sinking device carries the non-porous floating beads to enter a non-porous floating bead collector through a water pump of the floating and sinking device, and the non-porous floating beads are filtered to obtain sorted non-porous floating beads.
Compared with the prior art, the above one or more technical schemes have the following beneficial effects:
1. the fly ash is subjected to decarburization and demagnetization in sequence, porous floating beads, non-porous floating beads and sinking beads are sorted out in a pneumatic mode by utilizing the density difference of the floating beads and taking a fan as power, then the porous floating beads, the non-porous floating beads and a small amount of sinking beads which are sorted out in a coarse sorting mode are sequentially heated, cooled and subjected to sink-float treatment, the porous floating beads are cooled after being heated to separate out gas, so that the internal cavities of the porous floating beads absorb water to increase the weight and sink into the bottom of the sink-float device, namely the floating beads at the top of the sink-float device are non-porous floating beads which are not influenced by water temperature change.
2. The decarbonization, the demagnetization and the floating bead rough separation of the fly ash all adopt a dry separation mode, so that the occupied space of equipment and the water resource consumption are saved.
3. The carbon particles and the ash particles have different polarities and electric quantities by a triboelectric charging mode, so that the separation of the carbon particles and the ash particles is realized.
4. The magnetic field is generated by the magnetic field generator, so that magnetic substances in the ash particles are separated from the fly ash, and a foundation is laid for sorting high-quality floating beads.
5. The floating bead roughing machine utilizes the density difference of floating beads and sinking beads to realize preliminary separation in a pneumatic mode, the separated floating beads comprise nonporous floating beads, porous floating beads and sinking beads, and disturbance wind is arranged on the side part of the floating bead roughing machine to prevent fine particles from agglomerating so as to keep material particles in a good dispersion state.
6. The heater makes the gas in the porous floating beads expand and separate out at high temperature, the water vapor in the heater permeates into the interior of the porous floating beads, and a small amount of sinking beads (the density is more than 1 g/cm) which are not completely selected by the floating bead roughing machine are separated out 3 ) Submerged in the bottom of the heater。
7. Condenser pipe in the float and sink ware is at the refrigerated in-process, thereby porose inside vapor that floats the pearl is reduced by the condensation one-tenth liquid volume, thereby make porose inside negative pressure that forms that floats the pearl, make outside moisture infiltration be full of the inner chamber that porose floats the pearl and improve weight and sink, and sclausura floats the pearl and does not receive heating and refrigerated influence inside still be full of gas, the come-up under the effect of buoyancy, utilize the come-up and sink the separation that realizes porose floating pearl and sclausura floating pearl.
8. The stirrer in the floating and sinking device is beneficial to the full separation of the porous floating beads and the non-porous floating beads, and the high-quality recovery of the fly ash floating beads is realized.
9. The filter screen in the imperforate floating bead collector can convey the filtered water back to the heater and the floating and sinking device to realize the reuse of water.
10. The carbon particles and the magnetic beads are separated and collected while the non-porous floating beads are sorted, and the separated carbon particles and the separated magnetic beads can be further recycled, so that the method has additional economic value.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic diagram of a non-porous floating bead sorting system for fly ash according to one or more embodiments of the present invention;
in the figure: 1. the system comprises an ash bucket, a 2 ash bucket fan, a 3 triboelectrification chamber, a 4 carbon particle collection chamber, a 5 negative electrode rod, a 6 positive electrode rod, a 7 carbon particle channel, a 8 carbon particle collector, a 9 carbon particle collector valve, a 10 ash particle channel, a 11 ash particle collector, a 12 ash particle collector valve, a 13 ash particle fan, a 14 magnetic bead collection chamber, a 15 magnetic field generator, a 16 magnetic bead valve, a 17 magnetic bead collector, a 18 magnetic bead collector valve, a 19 non-magnetic bead valve, a 20 non-magnetic bead collector, a 21 non-magnetic bead collector valve, a 22 non-magnetic bead fan, a 23 floating bead roughing separator, a 24 overflow port, a 25 fan, a 26 bottom material port, a 27 disturbing fan, a 28 rough floating bead collector, a 29 heater, a 30 heating wire, a 31 heater valve, a 32 heater water pump, a 33 floating precipitator, a 34 stirrer, a 35 condensation pipe, a 36 floating precipitator valve, a 37 floating bead collector, a 38 floating bead collector, a non-porous collector, a 39 floating bead water pump, a non-porous collector and a floating bead water pipe 41.
Detailed Description
The invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The floating bead is a fly ash hollow sphere which can float on the water surface, is grey white, has a thin and hollow wall, has a particle size of about 0.1 mm, small heat conductivity and a refractoriness of more than or equal to 1610 ℃, is an excellent heat-insulating refractory material, and mainly comprises silicon dioxide and aluminum oxide as chemical components.
When the unit of the coal-fired thermal power plant burns with pulverized coal, most combustible components (carbon and organic matters) of coal are burnt, while clay non-combustible components (silicon, aluminum, iron, magnesium and the like) start to melt micro-droplets at the high temperature of 1300 ℃ in a hearth, and spin at high speed under the action of hot air of turbulent flow in a furnace to form a globoid silicon-aluminum sphere. The gases such as nitrogen, hydrogen, carbon dioxide and the like generated by combustion and cracking reaction are rapidly expanded in the fused high-temperature silicon-aluminum sphere, hollow glass bubbles are formed under the action of surface tension, and the hollow glass bubbles enter a flue to be rapidly cooled and hardened to form glass state hollow microspheres, namely fly ash floating beads.
As described in the background, bleachingThe 'porous floating beads' with incompletely closed wall surfaces exist in the beads, and the density of the porous floating beads is still less than 1g/cm 3 When the floating bead sorting is realized by depending on the density in the prior art, the porous floating beads can be sorted together with the nonporous floating beads with perfect wall surfaces, and the quality of the floating beads can be influenced by the existence of the porous floating beads, so that the overall performance of the floating beads during recycling is reduced.
Therefore, the following examples provide a system and a method for sorting non-porous floating beads from fly ash, in which fly ash is sequentially subjected to pretreatment (decarburization and demagnetization), floating bead rough sorting (sorting porous floating beads, non-porous floating beads and a small amount of sinking beads), and non-porous floating bead sorting (water heating, cooling and floating sinking), so as to sort out non-porous floating beads from fly ash, thereby realizing high-quality recovery of fly ash floating beads.
The first embodiment is as follows:
as shown in fig. 1, a sorting system for non-porous floating beads of fly ash comprises:
the pretreatment unit, the floating bead rough separation unit and the nonporous floating bead separation unit are connected in sequence;
the pretreatment unit comprises a decarburization unit connected with an outlet of the ash hopper 1 for receiving the fly ash, and an outlet of the decarburization unit is connected with an inlet of the demagnetization unit and is used for decarburization and demagnetization of the fly ash;
the floating bead rough separation unit comprises a floating bead rough separator 23 connected with an outlet of the demagnetizing unit, and under the action of a fan at the bottom of the floating bead rough separator 23 and a fan at the side part, a mixture of porous floating beads and non-porous floating beads in the fly ash is separated, decarbonized and demagnetized and then sent into the non-porous floating bead separation unit;
the nonporous floating bead sorting unit comprises a heater 29 connected with the outlet of the floating bead roughing device 23 and a floating-sinking device 33 connected with the outlet of the heater 29; the temperature of the water in the heater 29 is raised to separate out the gas in the porous floating beads and the vapor enters the porous floating beads, the floating and sinking device 33 receives the heated mixture, the temperature is lowered to condense the vapor in the porous floating beads to form negative pressure to suck the water in the floating and sinking device 33, the bottom of the floating and sinking device 33 is the porous floating beads which sink by absorbing the water, and the top of the floating and sinking device is the nonporous floating beads in a floating state.
The bottom outlet of the ash bucket 1 is connected with the decarburization unit through a pipeline, the bottom of the ash bucket 1 is provided with an ash bucket fan 2, and the ash bucket fan 2 is connected with the decarburization unit through a pipeline.
In this embodiment, the ash hopper 1 is used for receiving the fly ash as a raw material, and the fly ash is transmitted to the decarburization unit by using the power provided by the ash hopper fan 2.
The decarburization unit comprises a triboelectric chamber 3 connected to an inlet pipeline of a carbon particle collection chamber 4, and a negative electrode rod 5 and a positive electrode rod 6 which are arranged in parallel are arranged in the carbon particle collection chamber 4; the space below the negative electrode rod 5 is provided with an ash particle channel 10, and the space below the positive electrode rod 6 is provided with a carbon particle channel 7; the soot channel 10 and the carbon granulate channel 7 are connected to a soot collector 11 and a carbon granulate collector 8, respectively.
The outlets of the ash particle collector 11 and the carbon particle collector 8 are respectively connected with an ash particle collector valve 12 and a carbon particle collector valve 9; the ash particle collector 11 is connected with the demagnetizing unit through an outlet pipeline of an ash particle collector valve 12, and an ash particle fan 13 is connected to the outlet pipeline of the ash particle collector valve 12.
In the embodiment, the fly ash sent into the decarburization unit through the pipeline by the ash hopper fan 2 firstly passes through the frictional electrification chamber 3, so that carbon particles and ash particles have different polarities and electric quantities, the electrified fly ash enters the carbon particle capture chamber 4, the carbon particles move to the positive electrode bar 6 under the action of an electric field and enter the carbon particle collector 8 through the carbon particle channel 7, and the ash particles enter the ash particle collector 11 through the ash particle channel 10 positioned under the negative electrode bar 5, so that the decarburization of the fly ash is completed; the carbonaceous material in the carbon granule collector 8 may be transferred to a carrier for recovery and the soot in the soot collector 11 is fed to the demagnetization unit by means of a soot blower 13.
The demagnetizing unit comprises a magnetic bead trapping chamber 14 connected to an outlet pipeline of the soot blower 13, a magnetic field generator 15 is arranged inside the magnetic bead trapping chamber 14, an outlet of the bottom of the magnetic bead trapping chamber 14 is connected with a magnetic bead valve 16 and a non-magnetic bead valve 19, an outlet pipeline of the magnetic bead valve 16 is connected with a magnetic bead collector 17, an outlet of the magnetic bead collector 17 is connected with a magnetic bead collector valve 18, an outlet pipeline of the non-magnetic bead valve 19 is connected with a non-magnetic bead collector 20, an outlet of the non-magnetic bead collector 20 is connected with a non-magnetic bead collector valve 21, an outlet pipeline of the non-magnetic bead collector valve 21 is connected with a non-magnetic bead blower 22, and an outlet pipeline of the non-magnetic bead blower 22 is connected with a floating bead rough separation unit.
In this embodiment, the demagnetizing unit performs classified collection of magnetic beads and non-magnetic beads on the decarburized fly ash to realize demagnetization. The ash particles in the ash particle collector 11 enter the magnetic bead collecting chamber 14 under the control of the ash particle collector valve 12 and the ash particle fan 13, a magnetic field generated by the magnetic field generator 15 attracts magnetic beads (which refer to ferromagnetic substances in the material), the magnetic beads enter the magnetic bead collector 17 through the magnetic bead valve 16 to be recovered, non-magnetic beads (which refer to non-ferromagnetic substances in the material) enter the non-magnetic bead collector 20 through the non-magnetic bead valve 19, the separation of the magnetic beads and the non-magnetic beads in the ash particles is realized, and the separated non-magnetic beads are sent to the floating bead rough separation unit through the non-magnetic bead fan 22.
The floating bead rough separation unit comprises a floating bead rough separation machine 23, the floating bead rough separation machine 23 is provided with an upper side wall and a lower side wall which are connected together and vertically arranged, the lower side wall is obliquely arranged, a fan 25 is arranged in the space of the upper side wall, the top of the upper side wall is connected with an overflow port 24, and the overflow port 24 is sequentially connected with a rough separation floating bead collector 28 and a heater 29 of the nonporous floating bead separation unit through pipelines;
the upper side wall is connected with a disturbance fan 27 through a pipeline;
the lower side wall is connected with an outlet pipeline of the non-magnetic bead blower 22, the outlet pipeline of the non-magnetic bead blower 22 points to the rotating axis of the fan 25 along the vertical direction and receives materials from the demagnetizing unit;
the bottom of the lower side wall is provided with a bottom opening 26.
In this embodiment, the material in the non-magnetic bead collector 20 enters the floating bead roughing separator 23 under the action of the non-magnetic bead collector valve 21 and the non-magnetic bead blower 22, and the material is blown away by the wind power generated by the outlet pipeline of the non-magnetic bead blower 22, the wind power generated by the fan 25, and the lateral wind power generated by the disturbance blower 27, so as to separate floating beads from settled beads; lighter materials (porous floating beads, nonporous floating beads and a small amount of sinking beads) flow out from an overflow port 24 at the top of the upper side wall of the floating bead roughing device 23 to a roughing floating bead collector 28 and are conveyed into a heater 29 of a nonporous floating bead sorting unit through a pipeline, and most sinking beads flow out from a bottom material port 26 below the floating bead roughing device 23 and are collected.
The top of the heater 29 is connected with the rough floating bead collector 28 and a heater water pipe valve 41 through pipelines, the bottom of the heater is connected with a heater valve 31, the side wall of the heater is connected with the floating device 33 through a heater water pump 32 through pipelines, distilled water is contained in the heater 29, and the wall surface of the heater is connected with a heating wire 30. Gas in the porous floating beads is separated out in a heating mode, and water vapor enters the porous floating beads.
The side wall of the floating and sinking device 33 is respectively connected with a heater water pump 32 and a floating and sinking device water pump 37 through pipelines, the top of the floating and sinking device 33 is connected with a water pipe valve 40 of the floating and sinking device through a pipeline, a stirrer 34 is arranged in the floating and sinking device 33, the wall surface of the floating and sinking device 33 is connected with a condensing pipe 35, and the bottom outlet of the floating and sinking device 33 is connected with a valve 36 of the floating and sinking device; the float-sink water pump 37 is connected to the non-porous floating bead collector 38 through a pipe.
Condenser pipe 35 reduces the inside temperature of sink-float ware 33, the inside vapor of porose floating bead condenses into liquid under the effect of condenser pipe, the inside negative pressure that forms of porose floating bead this moment, outside moisture infiltration porose floating bead's inside is until filling up whole inner chamber, porose floating bead sinks to the bottom of sink-float ware 33 because of inside being filled up with water, and aporate floating bead this moment then floats at the top of sink-float ware, the pipeline through the lateral wall is carried the water that contains aporate floating bead to aporate floating bead collector 38 through sink-float ware water pump 37, realize the high quality recovery of floating bead.
The non-porous floating bead collector 38 is provided with a filter screen therein to filter out a small amount of water carried by the floating beads passing through the float-sink 33.
The bottom of the nonporous floating bead collector 38 is connected with a nonporous floating bead collector water pump 39 through a pipeline, the outlet of the nonporous floating bead collector water pump 39 is respectively connected with a float-sink device water pipe valve 40 and a heater water pipe valve 41 through pipelines, and the filtered water can be supplemented back to the float-sink device 33 and the heater 29, so that the full utilization of the water is realized, and the water resource is saved.
In this embodiment, the lighter material exiting overflow port 24 is deposited in rougher float collector 28 and eventually falls into heater 29. The heating wire 30 in the heater 29 can heat the distilled water to 95-98 ℃, at this time, the gas in the porous floating beads is separated out at high temperature, and simultaneously the water vapor enters the inner part of the porous floating beads. Because the floating bead roughing machine 23 can only realize the roughing of floating beads, a small amount of sinking beads still exist in the sorted floating beads, and the density of the sinking beads is greater than that of water, so the sinking beads sink to the bottom of the heater 29 and are finally discharged through the heater valve 31.
In this embodiment, the floating porous floating beads and non-porous floating beads floating above the heater 29 enter the float-sink device 33 under the action of the heater water pump 32, the condenser pipe 35 around the float-sink device 33 can control the water temperature at 20-30 ℃, at this time, the water vapor in the floating porous beads is condensed into liquid, negative pressure is generated inside the floating porous beads, and external moisture enters the inside of the floating porous beads under the action of the negative pressure until the whole inner cavity is filled. The inner part of the porous floating bead sinks in the floating and sinking device because of being filled with water, and then the nonporous floating bead floating above the floating and sinking device enters a nonporous floating bead collector 38 through a water pump 37 of the floating and sinking device, thereby realizing the high-quality recovery of the fly ash floating bead.
In this embodiment, the voltage of the carbon particle collecting chamber may be 25 to 35KV.
In the embodiment, the magnetic field intensity of the magnetic field generator can be 600-800KA/m.
In this embodiment, the fan speed may be 600-2200r/min.
In this embodiment, the heating wire may heat the distilled water to 95-98 ℃.
In this embodiment, the condenser tube can maintain the water temperature at 20-30 ℃.
The system sequentially decarbonizes and demagnetizes the fly ash, separates porous floating beads, non-porous floating beads and sinking beads in a pneumatic mode by utilizing the density difference of the floating beads, sequentially heats, cools and sinks the selected porous floating beads, non-porous floating beads and a small amount of sinking beads to ensure that the porous floating beads are heated to separate out gas, the internal cavity sucks water to increase the weight after cooling so as to ensure that the porous floating beads are sunk to the bottom of the water and finally float on the water surface, namely the floating beads at the top of the floating-sinking device are non-porous floating beads which are not influenced by the change of water temperature.
Example two:
the method for realizing the sorting of the non-porous floating beads based on the sorting system of the fly ash non-porous floating beads in the first embodiment comprises the following steps:
1. the fly ash in the ash bucket 1 enters the frictional electrification chamber 3 under the action of the ash bucket fan 2 to enable carbon granules and ash granules to have different polarities and electric quantities, the charged fly ash enters the carbon granule trapping chamber 4, the carbon granules move to the positive electrode bar 6 under the action of an electric field and enter the carbon granule collector 8 through the carbon granule channel 7, and the ash granules enter the ash granule collector 11 through the ash granule channel 10.
2. The soot in the soot collector 11 enters the magnetic bead trapping chamber 14 under the control of the soot collector valve 12 and the soot blower 13, magnetic beads and non-magnetic beads in the soot are separated by a magnetic field generated by the magnetic field generator 15, the magnetic beads enter the magnetic bead collector 17 through the magnetic bead valve 16, and the non-magnetic beads enter the non-magnetic bead collector 20 through the non-magnetic bead valve 19.
3. The material in the non-magnetic bead collector 20 enters the floating bead roughing device 23 under the action of the non-magnetic bead collector valve 21 and the non-magnetic bead blower 22, and the floating beads and the sinking beads are separated under the action of the fan 25 and the disturbance blower 27. Lighter materials (porous floating beads, nonporous floating beads and a small amount of sinking beads) flow out from an overflow port 24 above the floating bead roughing machine 23, and most sinking beads flow out from a bottom material port 26 below the floating bead roughing machine 23.
4. The lighter material flowing from overflow port 24 is deposited in coarse floating bead collector 28 and eventually falls into heater 29. The heating wire 30 in the heater 29 can heat the distilled water to 95-98 ℃, at this time, the gas in the porous floating beads is separated out at high temperature, and simultaneously the water vapor enters the inner part of the porous floating beads. Because the floating bead roughing machine 23 can only realize the roughing of floating beads, a small amount of sinking beads still exist in the sorted floating beads, and the density of the sinking beads is greater than that of water, so that the sinking beads sink to the bottom of the heater 29 and are finally discharged through the heater valve 31.
5. The floating porous floating beads and non-porous floating beads above the heater 29 enter the floating and sinking device 33 under the action of the heater water pump 32, the water temperature can be controlled at 20-30 ℃ by the condensing pipe 35 around the floating and sinking device 33, at this time, the water vapor in the porous floating beads is condensed into liquid, negative pressure is generated inside the porous floating beads, and external moisture enters the porous floating beads under the action of the negative pressure until the whole inner cavity is filled. The inner part of the porous floating bead sinks in the floating and sinking device because of being filled with water, and then the nonporous floating bead floating above the floating and sinking device enters a nonporous floating bead collector 38 through a water pump 37 of the floating and sinking device, thereby realizing the high-quality recovery of the fly ash floating bead.
In the sorting process:
the decarbonization, the demagnetization and the floating bead rough separation of the fly ash all adopt a dry separation mode, so that the occupied space of equipment and the water resource consumption are saved.
The carbon particles and the ash particles have different polarities and electric quantities by a triboelectric charging mode, so that the separation of the carbon particles and the ash particles is realized.
The magnetic field is generated by the magnetic field generator, so that magnetic substances in the ash particles are separated from the fly ash, and a foundation is laid for sorting high-quality floating beads.
The floating bead roughing machine can realize the initial separation of floating beads and sinking beads, the separated floating beads comprise non-porous floating beads, porous floating beads and a small amount of sinking beads, and disturbance air is arranged in the middle of the floating bead roughing machine to prevent fine particles from agglomerating and keep the particles in a good dispersion state.
The heater can heat water to 95-98 deg.C, i.e. to near boiling state, so that the gas in the porous floating beads can be expanded and separated out at high temperature, the water vapor in the heater can be permeated into the porous floating beads, and simultaneously, a small amount of the deposited beads (the density is more than 1 g/cm) in step 4 can be obtained 3 ) Sinking to the bottom of the heater.
The condensing pipe in the floating and sinking device can maintain the water temperature at 20-30 ℃, and the water vapor inside the porous floating beads is condensed into liquid in the cooling process, so that the volume is reduced, negative pressure is formed inside the porous floating beads, and external water permeates and fills the inner cavities of the porous floating beads. The porous floating beads are filled with water drops, the nonporous floating beads are filled with gas and float upwards under the action of buoyancy, and the porous floating beads sink due to weight increment of water.
The stirrer is arranged in the floating and sinking device, so that the porous floating beads and the non-porous floating beads can be fully separated under the action of the stirrer, and the high-quality recovery of the fly ash floating beads is realized.
The bottom of the nonporous floating bead collector is provided with a filter screen, and the filtered water can be conveyed to the heater and the floating and sinking device to realize the recycling of water.
The carbon particles and the magnetic beads are separated and collected while the non-porous floating beads are sorted, and the separated carbon particles and magnetic beads can be further recycled, so that the method has additional economic value.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a fly ash sclausura floats sorting system of pearl which characterized in that: the method comprises the following steps:
the pretreatment unit comprises a decarburization unit connected with an outlet of an ash hopper for receiving the fly ash, and an outlet of the decarburization unit is connected with an inlet of the demagnetizing unit and is used for decarburization and demagnetization of the fly ash;
the floating bead rough separation unit comprises a floating bead rough separator connected with an outlet of the demagnetizing unit, under the action of fans at the bottom and the side part of the floating bead rough separator, a mixture formed by porous floating beads and non-porous floating beads in the pretreated fly ash is separated and sent into the non-porous floating bead separation unit;
the nonporous floating bead sorting unit comprises a heater connected with an outlet of the floating bead roughing machine and a sink-float device connected with the outlet of the heater, and the wall surface of the sink-float device is connected with a condensing pipe; the temperature of water in the heater is raised to separate out gas in the porous floating beads, and simultaneously, the water vapor enters the porous floating beads, the floating and sinking device receives the heated mixture, the temperature is lowered to condense the water vapor in the porous floating beads to form negative pressure to suck the water in the floating and sinking device, the bottom of the floating and sinking device is provided with the porous floating beads which absorb the water and the top of the floating and sinking device is provided with the nonporous floating beads which are in a floating state.
2. The system for sorting non-porous floating beads of fly ash as claimed in claim 1, wherein: the bottom outlet of the ash bucket is connected with the decarburization unit through a pipeline, the bottom of the ash bucket is provided with an ash bucket fan, and the ash bucket fan is connected with the decarburization unit through a pipeline.
3. The system for sorting non-porous floating beads of fly ash as claimed in claim 1, wherein: the decarburization unit comprises a friction electrification chamber connected with an outlet pipeline of the ash bucket fan, the friction electrification chamber is connected with an inlet of the carbon particle collecting chamber through a pipeline, and a negative electrode rod and a positive electrode rod which are arranged in parallel are arranged in the carbon particle collecting chamber; the space below the negative electrode bar is provided with an ash particle channel, and the space below the positive electrode bar is provided with a carbon particle channel; the ash particle channel and the carbon particle channel are respectively connected with the ash particle collector and the carbon particle collector;
the outlets of the ash particle collector and the carbon particle collector are respectively connected with an ash particle collector valve and a carbon particle collector valve; the ash particle collector is connected with the demagnetizing unit through an outlet pipeline of an ash particle collector valve, and an ash particle fan is connected to the outlet pipeline of the ash particle collector valve.
4. The system for sorting non-porous floating beads of fly ash as claimed in claim 1, wherein: the demagnetizing unit comprises a magnetic bead trapping chamber connected to an outlet pipeline of the soot blower, a magnetic field generator is arranged in the magnetic bead trapping chamber, and an outlet at the bottom of the magnetic bead trapping chamber is respectively connected with a magnetic bead valve and a non-magnetic bead valve; an outlet pipeline of the magnetic bead valve is connected with a magnetic bead collector, and an outlet of the magnetic bead collector is connected with the magnetic bead collector valve; an outlet pipeline of the non-magnetic bead valve is connected with the non-magnetic bead collector, an outlet of the non-magnetic bead collector is connected with the non-magnetic bead collector valve, an outlet pipeline of the non-magnetic bead collector valve is connected with the non-magnetic bead fan, and an outlet pipeline of the non-magnetic bead fan is connected with the floating bead rough separation unit.
5. The system for sorting non-porous floating beads of fly ash as claimed in claim 1, wherein: the floating bead rough separation unit comprises a floating bead rough separation machine, the floating bead rough separation machine is provided with an upper side wall and a lower side wall, the upper side wall and the lower side wall are connected together and are vertically arranged, a fan is arranged in the space of the upper side wall, the top of the upper side wall is connected with an overflow port, and the overflow port is sequentially connected with a rough floating bead collector and a heater of a nonporous floating bead separation unit through a pipeline.
6. The system for sorting non-porous floating beads of fly ash as claimed in claim 5, wherein: the side wall of the upper part is connected with a disturbance fan through a pipeline, the side wall of the lower part is connected with an outlet pipeline of a non-magnetic bead fan, and the outlet pipeline of the non-magnetic bead fan points to the rotation axis of the fan along the vertical direction to receive materials from the demagnetizing unit; the bottom of the lower side wall is provided with a bottom material port.
7. The system for sorting non-porous floating beads of fly ash as claimed in claim 1, wherein: the top of the heater is connected with the roughing floating bead collector and a heater water pipe valve through a pipeline, the bottom of the heater is connected with the heater valve, the side wall of the heater is connected with the floating and sinking device through a heater water pump through a pipeline, water is contained in the heater, and the wall surface of the heater is connected with a heating wire.
8. The system for sorting non-porous floating beads of fly ash as claimed in claim 1, wherein: the side wall of the floating and sinking device is respectively connected with a heater water pump and a floating and sinking device water pump through pipelines, the top of the floating and sinking device is connected with a water pipe valve of the floating and sinking device through a pipeline, a stirrer is arranged in the floating and sinking device, the wall surface of the floating and sinking device is connected with a condenser pipe, and an outlet at the bottom of the floating and sinking device is connected with a valve of the floating and sinking device; the water pump of the floating and sinking device is connected with the nonporous floating bead collector through a pipeline.
9. The system for sorting non-porous floating beads of fly ash as claimed in claim 8, wherein: the bottom of the nonporous floating bead collector is connected with a nonporous floating bead collector water pump through a pipeline, and the outlet of the nonporous floating bead collector water pump is respectively connected with a water pipe valve of the sink-float device and a water pipe valve of the heater through pipelines.
10. A method for sorting non-porous floating beads of fly ash based on the system as claimed in any one of claims 1 to 9, comprising the following steps:
the fly ash is driven by an ash bucket fan and sent into a pretreatment unit for decarburization and demagnetization;
the pretreated materials enter a floating bead rough separation unit, separated sinking beads flow out of a bed charge port of the floating bead rough separator under the action of a bottom fan and a side fan of the floating bead rough separator to obtain a mixture of porous floating beads and nonporous floating beads, and the mixture is sequentially sent into a heater and a floating and sinking device of the nonporous floating bead separation unit;
the heater of the nonporous floating bead sorting unit heats water contained inside, so that gas inside the porous floating beads is separated out, and water vapor enters the porous floating beads;
the water in the floating and sinking device carries the non-porous floating beads to enter a non-porous floating bead collector through a water pump of the floating and sinking device, and the non-porous floating beads are filtered to obtain sorted non-porous floating beads.
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| CN105293804A (en) * | 2015-11-01 | 2016-02-03 | 张晓峰 | Coal gasification ash water treatment method |
| CN215429583U (en) * | 2021-03-24 | 2022-01-07 | 四川深蓝环保科技有限公司 | Fly ash resource utilization system |
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| CN1104934A (en) * | 1993-11-19 | 1995-07-12 | 北京国防科技成果技术开发中心 | Wet sorting method for coal fly ash hollow micro bead |
| US6444162B1 (en) * | 2000-11-27 | 2002-09-03 | The United States Of America As Represented By The United States Department Of Energy | Open-cell glass crystalline porous material |
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| CN114798670A (en) | 2022-07-29 |
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