CN104399738A - Fly ash smelting pre-treatment system and fly ash treating method - Google Patents
Fly ash smelting pre-treatment system and fly ash treating method Download PDFInfo
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- CN104399738A CN104399738A CN201410691628.0A CN201410691628A CN104399738A CN 104399738 A CN104399738 A CN 104399738A CN 201410691628 A CN201410691628 A CN 201410691628A CN 104399738 A CN104399738 A CN 104399738A
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Abstract
The invention provides a fly ash smelting pre-treatment system which comprises a raw material storage bin, a pelleting device and a smelting furnace, wherein the rear part of the raw material storage bin is connected to the pelleting device; the rear part of the pelleting device is connected with a first hoister; the rear part of the first hoister is connected to a finished product bin; the rear part of the finished product bin is connected to a second hoister; the rear part of the second hoister is connected to the smelting furnace; the pelleting device comprises a forced feeding machine connected with the raw material storage bin; the rear part of the forced feeding machine is connected to a piece rolling main engine; the rear part of the piece rolling main engine is connected to a crushing machine; the rear part of the crushing machine is connected to a straightening granulator; the rear part of the straightening granulator is connected with a grading sieve; the grading sieve is connected with the first hoister. According to the fly ash smelting pre-treatment system provided by the invention, powdered fine fly ash are compressed to be blocky, are crushed into particles with proper size by using the crushing machine, and cannot diffuse into air during the transportation process; the particulate matters cannot drift into a tail gas treating system along with tail gas after being conveyed to the thermolysis smelting furnace; therefore, the bridging phenomenon and the phenomenon that particles are adhered to a wall are avoided.
Description
Technical field
The present invention relates to the pretreatment system in a kind of hazardous waste treatment facility, particularly fusing fly ash pyrolytic technique.This pretreatment system is that flying dust is transported to from flying dust storage area the equipment the process of pyrolysis melting furnace, flying dust being carried out to morphological process.
Background technology
Along with the fast development of house refuse and medical refuse burning, the output of flying ash increases year by year.Containing a large amount of heavy metals in incineration of refuse flyash, as Hg, Cd, Pb, Cr and Zn Ji bioxin and furans organic pollution etc., following table is a kind of composition and content of beary metal thereof of flying dust.
A kind of main component of incineration of refuse flyash and content of beary metal
| Main component | Content/% | Heavy metal element | Content/mg.kg -1 |
| CaO | 26.842 | Pb | 2055 |
| SiO 2 | 16.012 | Cr | 181 |
| Cl | 14.545 | As | 79.6 |
| SO 3 | 13.721 | Cd | 193 |
| K 2O | 9.7911 | Zn | 8100 |
| Al 2O 3 | 4.39 | Mn | 1090 |
| Fe 2O 3 | 3.4887 | Ti | 11.1 |
| Na 2O | 3.4451 | Cu | 888 |
| P 2O 5 | 2.0601 | Ni | 68.7 |
| MgO | 1.7615 | Hg | 1.23 |
| ZnO | 1.3061 |
In flying dust, bioxin accounts in burning process and produces more than 60% of bioxin total amount, when processing, because dust-like is very easily disseminated in air, to environment, flying dust is also easy when being delivered in treatment facility directly to be got rid of with flue gas, causes the halfway phenomenon of process.
Because fly ash granule is very little, actual is suspend in the channel, can not be delivered directly in treatment facility, can be diffused in air by some minim gaps of equipment connection position and equipment itself in the process of conveying, produces pollute environment.Because treatment facility is all much internal negative pressure, if directly flying dust being put in treatment facility to cause fly ash granule directly to fly away in tail gas, exhaust treatment system is diffused into tail gas, the adverse consequences caused has: secondary flying ash output is too high, 50% of inlet amount can be reached, make treatment effeciency low; Rear segment pipe can be blocked, increase the pressure of vent gas treatment, work for the treatment of can not be carried out continuously.In addition, the little surface area that makes of particle size of fly ash is large, and intergranular friction power is large, and flying dust is sent in the process of plasma device can form " bridge formation " and wall cling phenomenon, causes flying dust not send into continuously, forces feeding that feeder can be made stuck.
Summary of the invention
Technical solution of the present invention aims to provide a kind of fusing fly ash pretreatment system and flyash treatment method, be intended in the process that flying dust has flying dust storage area to be transported in melting furnace, physical aspect change is carried out to tiny pulverous flying dust, make graininess, avoid flying dust to occur " bridge formation " and wall cling phenomenon in subsequent processing device.
A kind of fusing fly ash pretreatment system of the present invention, comprise raw material storage silo, Granulation Equipments, melting furnace, described raw material storage silo rear portion connects Granulation Equipments, described Granulation Equipments rear portion is connected with the first elevator, described first elevator rear portion is connected with finished bin, described finished bin rear portion is connected with the second elevator, described second elevator rear portion connects melting furnace, described Granulation Equipments comprises the forced feed machine be connected with raw material storage silo, described forced feed machine rear portion is connected with rolls sheet main frame, described pressing main frame rear portion is connected with Material disintegrator, described Material disintegrator rear portion is connected with pelletizing machine, described pelletizing machine rear portion connects classifying screen, described classifying screen is connected with the first elevator.
Preferably, described raw material storage silo front portion is connected with flying dust elevator, described flying dust elevator discharging opening is higher than raw material storage silo charging aperture height, and be provided with dosing unit between raw material storage silo and forced feed machine, described dosing unit is arranged at bottom raw material storage silo.
Preferably, weighing apparatus is provided with between described finished bin and the second elevator.
Preferably, described flying dust elevator, the first elevator, the second elevator are bucket elevator.
Preferably, be provided with spiral compressing tablet in described forced feed machine, forced feed machine top is provided with drive motors one, and described spiral compressing tablet is driven by drive motors one.
Preferably, described in roll sheet main frame inside be provided with two parallel rolls, described Material disintegrator inside is provided with main shaft, and described main shaft arranges rotor rack, and described rotor rack surrounding is uniform is provided with four bars.
Preferably, be provided with screen cloth in described classifying screen, described screen cloth is respectively arranged with outlet up and down, and described screen cloth upper outlet is connected with the first elevator, and screen cloth lower part outlet is connected with flying dust storage area.
A flyash treatment method for fusing fly ash pretreatment system, comprises following step:
(1) utilize flying dust elevator that flying dust is promoted to raw material storage silo by flying dust storage area.
(2) arrange dosing unit parameter according to the treating capacity of pyrolysis melting furnace, flying dust is delivered to forced feed machine by dosing unit.
(3) run forced feed machine, flying dust press-in is rolled in the roll relatively operated for a pair of sheet main frame, and roll provides the pressure of 10MP to flying dust, continuously flying dust is rolled into the large-block material of thickness 8-9mm.
(4) continuous print large-block material enters Material disintegrator, four bars that rotor rack rotarily drives support body surrounding do not stop to act on bulk materials, it is broken into length and width and is respectively small particles material, then through working machine for timber reprocessing finally becomes long 18-19mm, wide 15-16mm thickness is 8-9mm standard small particles material.
(5) small particles material enters classifying screen, the percussion mechanism started in classifying screen drives screen cloth to shake, small particles material is separated under shock effect, the material that size is qualified exports from the outlet on screen cloth top, and be delivered to finished bin by the first elevator, temporary, the underproof material of size returns flying dust storage area from the outlet of screen cloth bottom.
(6) open the weighing apparatus below finished bin, weighing apparatus draws the numerical value of weight of material mass transport to the second elevator under the effect of helicoid conveyer, and material is finally delivered to melting furnace by the second elevator simultaneously.
The beneficial effect of technical solution of the present invention is:
1, utilize bucket elevator by material lifting to relatively high position, utilize gravity to make material conveying downwards automatically in process, minimizing equipment use quantity, reduces input cost and total floor space, also can reduce the use amount of the energy simultaneously;
2, in flying dust pretreatment system, fly ash carry and processing procedure are closed, and flying dust is after rolling sheet main frame compressing tablet, and the flying dust amount in material is little, and a small amount of flying dust is not easily diffused in air;
3, this flying dust pretreatment system is utilized; change the physical aspect of flying dust; by pulverous tiny flying dust through being pressed into bulk; and the graininess utilizing disintegrating apparatus to be crushed to be of moderate size; this particulate material is in conveying engineering; can not be diffused in air; particulate material also can not fly away exhaust treatment system with tail gas after being transported to pyrolysis melting furnace; the flying dust volume changing physical aspect increases; but total surface area reduces thus it also avoid " bridge formation " and " wall built-up " phenomenon; protect the security of follow-up equipment, improve melting efficiency.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of fusing fly ash pretreatment system of the present invention
Wherein, 1, flying dust elevator, 2, raw material storage silo, 3, quantifying feed machine, 4, forced feed machine; 5, sheet main frame is rolled, 6, Material disintegrator, 7, pelletizing machine, 8, classifying screen, the 9, first elevator; 10, finished bin, 11, weighing apparatus, the 12, second elevator, 13, melting furnace.
Detailed description of the invention
Understand technical solution of the present invention for ease of those skilled in the art, now in conjunction with Figure of description, technical solution of the present invention is described further.
As shown in Figure 1, a kind of fusing fly ash pretreatment system of the present invention, comprise raw material storage silo 2, Granulation Equipments, melting furnace 13, described raw material storage silo 2 rear portion connects Granulation Equipments, described Granulation Equipments rear portion is connected with the first elevator 9, described first elevator 9 rear portion is connected with finished bin 10, described finished bin 10 rear portion is connected with the second elevator 11, described second elevator 11 rear portion connects melting furnace 13, described Granulation Equipments comprises the forced feed machine 4 be connected with raw material storage silo 2, described forced feed machine 4 rear portion is connected with rolls sheet main frame 5, described pressing main frame 5 rear portion is connected with Material disintegrator 6, described Material disintegrator 6 rear portion is connected with pelletizing machine 7, described pelletizing machine 7 rear portion connects classifying screen 8, described classifying screen 8 is connected with the first elevator 9.
Described raw material storage silo 2 front portion is connected with flying dust elevator 1, described flying dust elevator 1 discharging opening is higher than raw material storage silo 2 charging aperture height, be provided with dosing unit 3 between raw material storage silo 2 and forced feed machine 4, described dosing unit 3 is arranged at bottom raw material storage silo 2.
Weighing apparatus 12 is provided with between described finished bin 10 and the second elevator 11.
Described flying dust elevator 1, first elevator 9, second elevator 11 is bucket elevator.
Be provided with spiral compressing tablet in described forced feed machine 4, forced feed machine 4 top is provided with drive motors one, and described spiral compressing tablet is driven by drive motors one.
Described sheet main frame 5 inside of rolling is provided with two parallel rolls, and described Material disintegrator 6 inside is provided with main shaft, and described main shaft arranges rotor rack, and described rotor rack surrounding is uniform is provided with four bars.
Be provided with screen cloth in described classifying screen 8, described screen cloth is respectively arranged with outlet up and down, and described screen cloth upper outlet is connected with the first elevator 9, and screen cloth lower part outlet is connected with flying dust storage area.
A flyash treatment method for fusing fly ash pretreatment system, comprises following step:
(1) utilize flying dust elevator 1 that flying dust is promoted to raw material storage silo 2 by flying dust storage area.
(2) arrange dosing unit 3 parameter according to the treating capacity of pyrolysis melting furnace 13, flying dust is delivered to forced feed machine 4 by dosing unit 3.
(3) run forced feed machine 4, flying dust press-in is rolled in the roll relatively operated for a pair of sheet main frame 5, and roll provides the pressure of 10MP to flying dust, continuously flying dust is rolled into the large-block material of thickness 8-9mm.
(4) continuous print large-block material enters Material disintegrator 6, four bars that rotor rack rotarily drives support body surrounding do not stop to act on bulk materials, it is broken into length and width and is respectively small particles material, then through working machine for timber 7 reprocessing finally becomes long 18-19mm, wide 15-16mm thickness is 8-9mm standard small particles material.
(5) small particles material enters classifying screen 8, the percussion mechanism started in classifying screen 8 drives screen cloth to shake, small particles material is separated under shock effect, the material that size is qualified exports from the outlet on screen cloth top, and be delivered to finished bin 10 by the first elevator 9, temporary, the underproof material of size returns flying dust storage area from the outlet of screen cloth bottom.
(6) open the weighing apparatus 12 below finished bin 10, weighing apparatus 12 draws the numerical value of weight of material mass transport to the second elevator 11 under the effect of helicoid conveyer, and material is finally delivered to melting furnace 13 by the second elevator 11 simultaneously.
By reference to the accompanying drawings invention is exemplarily described above; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out to improve; or the design of invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (8)
1. a fusing fly ash pretreatment system, comprise raw material storage silo, Granulation Equipments, melting furnace, it is characterized in that, described raw material storage silo rear portion connects Granulation Equipments, described Granulation Equipments rear portion is connected with the first elevator, described first elevator rear portion is connected with finished bin, described finished bin rear portion is connected with the second elevator, described second elevator rear portion connects melting furnace, described Granulation Equipments comprises the forced feed machine be connected with raw material storage silo, described forced feed machine rear portion is connected with rolls sheet main frame, described pressing main frame rear portion is connected with Material disintegrator, described Material disintegrator rear portion is connected with pelletizing machine, described pelletizing machine rear portion connects classifying screen, described classifying screen is connected with the first elevator.
2. a kind of fusing fly ash pretreatment system according to claim 1, it is characterized in that, described raw material storage silo front portion is connected with flying dust elevator, and be provided with dosing unit between raw material storage silo and forced feed machine, described dosing unit is arranged at bottom raw material storage silo.
3. a kind of fusing fly ash pretreatment system according to claim 1, is characterized in that, be provided with weighing apparatus between described finished bin and the second elevator.
4. a kind of fusing fly ash pretreatment system according to claim 1, is characterized in that, described flying dust elevator, the first elevator, the second elevator are bucket elevator.
5. a kind of fusing fly ash pretreatment system according to claim 1, is characterized in that, is provided with spiral compressing tablet in described forced feed machine, and forced feed machine top is provided with drive motors one, and described spiral compressing tablet is driven by drive motors one.
6. a kind of fusing fly ash pretreatment system according to claim 1, it is characterized in that, described in roll sheet main frame inside be provided with two parallel rolls, described Material disintegrator inside is provided with main shaft, described main shaft arranges rotor rack, and described rotor rack surrounding is uniform is provided with four bars.
7. a kind of fusing fly ash pretreatment system according to claim 1, it is characterized in that, be provided with screen cloth in described classifying screen, described screen cloth is respectively arranged with outlet up and down, described screen cloth upper outlet is connected with the first elevator, and screen cloth lower part outlet is connected with flying dust storage area.
8. the flyash treatment method of a kind of fusing fly ash pretreatment system described in claim 1-7, is characterized in that, comprise following step:
(1) utilize flying dust elevator that flying dust is promoted to raw material storage silo by flying dust storage area.
(2) arrange dosing unit parameter according to the treating capacity of pyrolysis melting furnace, flying dust is delivered to forced feed machine by dosing unit.
(3) run forced feed machine, flying dust press-in is rolled in the roll relatively operated for a pair of sheet main frame, and roll provides the pressure of 10MP to flying dust, continuously flying dust is rolled into the large-block material of thickness 8-9mm.
(4) continuous print large-block material enters Material disintegrator, four bars that rotor rack rotarily drives support body surrounding do not stop to act on bulk materials, it is broken into length and width and is respectively small particles material, then through working machine for timber reprocessing finally becomes long 18-19mm, wide 15-16mm thickness is 8-9mm standard small particles material.
(5) small particles material enters classifying screen, the percussion mechanism started in classifying screen drives screen cloth to shake, small particles material is separated under shock effect, the material that size is qualified exports from the outlet on screen cloth top, and be delivered to finished bin by the first elevator, temporary, the underproof material of size returns flying dust storage area from the outlet of screen cloth bottom.
(6) open the weighing apparatus below finished bin, weighing apparatus draws the numerical value of weight of material mass transport to the second elevator under the effect of helicoid conveyer, and material is finally delivered to melting furnace by the second elevator simultaneously.
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| CN201410691628.0A CN104399738A (en) | 2014-11-26 | 2014-11-26 | Fly ash smelting pre-treatment system and fly ash treating method |
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| CN201410691628.0A CN104399738A (en) | 2014-11-26 | 2014-11-26 | Fly ash smelting pre-treatment system and fly ash treating method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801526A (en) * | 2015-05-19 | 2015-07-29 | 江苏西玛环境科技有限公司 | Solidification treatment system for fly ash |
| CN107029633A (en) * | 2017-05-03 | 2017-08-11 | 江苏天楹环保能源成套设备有限公司 | Flying dust plasma fusion mixed-forming preprocessing system and its handling process |
| CN108555001A (en) * | 2018-05-08 | 2018-09-21 | 常州市神工造粒设备有限公司 | A kind of flying dust prilling granulator and it is granulated incineration system |
| CN108927398A (en) * | 2018-05-25 | 2018-12-04 | 天津大学 | The vitrified method of plasma fusion flying dust based on the adjustment of tri- Phase Proportion of CaO-Al2O3-SiO2 |
| CN109174914A (en) * | 2018-09-10 | 2019-01-11 | 中国恩菲工程技术有限公司 | Fusing fly ash device |
| CN109174915A (en) * | 2018-09-10 | 2019-01-11 | 中国恩菲工程技术有限公司 | Fusing fly ash method |
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| CN202621118U (en) * | 2012-03-30 | 2012-12-26 | 杨文福 | Counter-roller dry-method extrusion granulator |
| CN204396449U (en) * | 2014-11-26 | 2015-06-17 | 安徽中科华炬环保科技有限公司 | A kind of fusing fly ash pretreatment system |
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Patent Citations (6)
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| JP2003334511A (en) * | 2002-05-15 | 2003-11-25 | Daido Steel Co Ltd | Fly ash stabilizing apparatus |
| CN201208552Y (en) * | 2008-05-07 | 2009-03-18 | 孙宝法 | Dry process rolling granulator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801526A (en) * | 2015-05-19 | 2015-07-29 | 江苏西玛环境科技有限公司 | Solidification treatment system for fly ash |
| CN107029633A (en) * | 2017-05-03 | 2017-08-11 | 江苏天楹环保能源成套设备有限公司 | Flying dust plasma fusion mixed-forming preprocessing system and its handling process |
| CN108555001A (en) * | 2018-05-08 | 2018-09-21 | 常州市神工造粒设备有限公司 | A kind of flying dust prilling granulator and it is granulated incineration system |
| CN108927398A (en) * | 2018-05-25 | 2018-12-04 | 天津大学 | The vitrified method of plasma fusion flying dust based on the adjustment of tri- Phase Proportion of CaO-Al2O3-SiO2 |
| CN109174914A (en) * | 2018-09-10 | 2019-01-11 | 中国恩菲工程技术有限公司 | Fusing fly ash device |
| CN109174915A (en) * | 2018-09-10 | 2019-01-11 | 中国恩菲工程技术有限公司 | Fusing fly ash method |
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Application publication date: 20150311 |