CN207035141U - The harmlessness disposing device of electrolytic aluminium solid waste - Google Patents
The harmlessness disposing device of electrolytic aluminium solid waste Download PDFInfo
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- CN207035141U CN207035141U CN201720601528.3U CN201720601528U CN207035141U CN 207035141 U CN207035141 U CN 207035141U CN 201720601528 U CN201720601528 U CN 201720601528U CN 207035141 U CN207035141 U CN 207035141U
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- burner hearth
- air
- heat exchange
- solid waste
- electrolytic aluminium
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model patent provides a kind of harmlessness disposing device of electrolytic aluminium solid waste, including：Limestone silo (1), coal bunker (1), burner hearth (3), drum (4), heat exchange casing (5), cyclone separator (6), material returning device (7), dust-removal and desulfurizing denitration combined unit (9), superheater (11), economizer (12) and air preheater (13)；After electrolytic aluminium solid waste waste lining is mixed and crushed with coal, it is sent into from fluid bed boiler furnace middle part；Burner hearth is sent into from air distribution plate bottom with First air after lime stone is crushed, Secondary Air is sent into the middle part of burner hearth；Waste lining powder, coal dust, the agstone mixture of flow regime are presented in the presence of First air and Secondary Air, innoxious course of reaction occurs in stove chamber inner combustion；Utilized in flue gas recirculation caused by combustion process.By recirculating fluidized bed to electrolytic aluminium solid waste harmlessness disposing, effectively reduce the leaching content of harmful poisonous substance, realize innoxious, reduce the environmental pollution caused by discarded object, device not only realizes the innoxious of waste lining, and without separately putting a set of new equipment, operating cost has been saved, therefore be very suitable for being used to handle dangerous electrolytic aluminium solid waste.
Description
Technical field
It the utility model is related to technical field of environmental protection in chemical industry, specially a kind of system and technique bar using fluidized-bed combustion boiler
Part carrys out cooperative disposal waste lining to realize its innoxious method, the harmlessness disposing dress of especially a kind of electrolytic aluminium solid waste
Put.
Background technology
Electrometallurgy aluminium is exactly to smelt the alundum (Al2O3) of aluminium electroloysis molten condition by being electrolysed, and can produce aluminium and oxygen.Electricity
Largely discarded cathode carbon pieces are produced during smelting aluminium, if directly landfill or stacking can all cause air, soil in various degree
And underground water pollution, and recycling can not be realized.In terms of electrometallurgy aluminium waste cathode carbon Slag treatment, disposal, both at home and abroad research compared with
More is burning method processing.Incineration treatment technology essence is under certain incineration temperature (800~900 DEG C), added necessarily
Under the conditions of the reactant of amount, a series of physical chemical reaction occurs to realize the innoxious process of waste lining.
In addition, CFBC (CFBC) technology refers to that short grained coal is in fluidized state with air in burner hearth
Under, i.e. the technology of high velocity air and the dense abundant catalytic combustion of suspension coal particle of entrained fluidized-bed combustion boiler.Fluidized-bed combustion boiler
Desulfurization is burning sulfur removal technology in a kind of stove, and using lime stone as desulfurization absorbent, coal-fired and lime stone is from boiler furnace bottom
It is sent into, First air is sent into from air distribution plate bottom, and Secondary Air is sent into the middle part of combustion chamber.Fluidized-bed combustion boiler is in burning process is heated
A series of physical and chemical change can occur, desulfurization absorbent is reacted with sulfide and realizes desulfurization, and coal particles are fully fired
Burning is converted into heat energy.First, fluidized-bed combustion boiler provides is heat-treated approximate burning problem, approximate burning facility with waste lining
Etc. heat treatment condition；Secondly desulphurization reaction agent (the conventional CaCO added in fluidized-bed combustion boiler3) waste lining can also be used as harmless
The defluorination reaction inorganic agent of change, and a set of add-on system can be shared；Again, imitated compared to coal-powder boiler, the burning of fluidized-bed combustion boiler
Rate is higher, and the requirement to particle diameter is low, and fuel pretreatment system is simpler, and the selection to fuel (can use poor quality more extensively
Coal), therefore recirculating fluidized bed is more suitable for for handling waste.
Utility model content
The technical problems to be solved in the utility model and the technical assignment proposed are to make up the deficiencies in the prior art, there is provided one
The harmlessness disposing device of kind electrolytic aluminium solid waste, by recirculating fluidized bed to electrolytic aluminium solid waste harmlessness disposing, has
Effect reduces the leaching content of harmful poisonous substance, realizes innoxious, reduces the environmental pollution caused by discarded object, device is not only realized
Waste lining it is innoxious, and without separately putting a set of new equipment, saved operating cost, therefore be very suitable for being used to handle danger
Dangerous electrolytic aluminium solid waste.
The purpose of this utility model is achieved through the following technical solutions：
A kind of harmlessness disposing device of electrolytic aluminium solid waste, including：Limestone silo 1, coal bunker 2, burner hearth 3, drum 4,
Heat exchange casing 5, cyclone separator 6, material returning device 7, dust-removal and desulfurizing denitration combined unit 9, superheater 11, economizer 12 and sky
Air preheater 13；
Limestone silo 1 is connected by the bottom charging aperture of burner hearth 3 with the inside of burner hearth 3；Coal bunker 2 is fed by the middle part of burner hearth 3
Mouth connects with the inside of burner hearth 3；The top of burner hearth 3 is connected provided with the passage for leading to drum 4 with drum 4；Drum 4, which is provided with, leads to hot friendship
The passage for changing the top of casing 5 connects with the inside of heat exchange casing 5；
The top of cyclone separator 6 connects provided with wing passage with heat exchange casing 5, and the top of cyclone separator 6 is provided with top passage
Connected with the inside of heat exchange casing 5；The bottom of cyclone separator 6 is connected by material returning device 7 with the bottom of burner hearth 3；6 under cyclone separator
Bottom connects the first air-introduced machine 8；
The bottom of heat exchange casing 5 connection dust-removal and desulfurizing denitration combined unit 9, dust-removal and desulfurizing denitration combined unit 9 reconnects
Second air-introduced machine 10；
The inside of heat exchange casing 5 is provided with superheater 11, economizer 12, air preheater 13；Superheater 11 is located at heat exchange
The top of casing 5, and it is provided with steam (vapor) outlet 14；Economizer 12 is located at the positive bottom of superheater 11, connects admission port 15；Air is pre-
Hot device 13 is located at economizer bottom；The primary air duct import of air preheater 13 connects primary air fan 16, under outlet burner hearth 3
Portion, the Secondary Air pipeline import connecting secondary blower fan 17 of air preheater 13, the middle part of outlet burner hearth 3.
The described bottom of burner hearth 3 connects with furnace bottom ash cooler 18, and the bottom of furnace bottom ash cooler 18 connects with furnace bottom ash bucket 19
It is logical.
The described bottom of burner hearth 3 is additionally provided with air distribution plate 20.
A kind of electrolysis that the utility model embodiment provides it can be seen from above-mentioned technical scheme provided by the utility model
The harmlessness disposing device of aluminium solid waste, by recirculating fluidized bed to electrolytic aluminium solid waste harmlessness disposing, effectively reduce
The leaching content of harmful poisonous substance, realizes innoxious, reduces the environmental pollution caused by discarded object, device not only realizes useless groove
What is served as a contrast is innoxious, and without separately putting a set of new equipment, has saved operating cost, therefore is very suitable for being used to handle dangerous electrolysis
Aluminium solid waste.It can be seen that electrometallurgy aluminium waste lining is combined into carry out cooperative disposal with fluidized-bed combustion boiler burning process, it is both full
The industry industrial production such as sufficient thermoelectricity, there is provided on the premise of meeting standard quality and the industrial steam or electric energy of quantity, realize again
The innoxious system disposal of electrolytic aluminium hazardous waste.Importantly, the synergic processing process is based only upon Incineration in CFB
Technique, and without any hardware investment of increase, thus save a set of heat treatment system.Meanwhile relative to traditional recycle stream
It is basic without increase operating cost for fluidized-bed incineration technique.
Brief description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment
The accompanying drawing used is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present utility model
Example, on the premise of not paying creative work, can also be according to these accompanying drawings for one of ordinary skill in the art
Obtain other accompanying drawings.
Fig. 1 is the schematic diagram of the harmlessness disposing device for the electrolytic aluminium solid waste that the utility model embodiment provides；
Fig. 2 is the technique stream of the harmlessness disposing technique method for the electrolytic aluminium solid waste that the utility model embodiment provides
Journey schematic diagram.
Embodiment
With reference to the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu, it is fully described by, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole realities
Apply example.Based on embodiment of the present utility model, those of ordinary skill in the art are obtained under the premise of creative work is not made
The every other embodiment obtained, belongs to the scope of protection of the utility model.
The utility model embodiment is described in further detail below in conjunction with accompanying drawing.
Embodiment one
As shown in figure 1, a kind of harmlessness disposing device of electrolytic aluminium solid waste, can be achieved the side of embodiment one and two
Method, including：Limestone silo 1, coal bunker 2, burner hearth 3, drum 4, heat exchange casing 5, cyclone separator 6, material returning device 7, dust-removal and desulfurizing
Denitration combined unit 9, superheater 11, economizer 12 and air preheater 13；
Limestone silo 1 is connected by the bottom charging aperture of burner hearth 3 with the inside of burner hearth 3；So as to the agstone of addition, lime
Stone flour Limestone silo 1 is entered in burner hearth 3 by passage；Coal bunker 2 is connected by the middle part charging aperture of burner hearth 3 with the inside of burner hearth 3；From
And add waste lining and coal is entered inside burner hearth；The top of burner hearth 3 is connected provided with the passage for leading to drum 4 with drum 4；Drum
4 are provided with the passage for leading to the top of heat exchange casing 5 with being connected inside heat exchange casing 5；, the described bottom of burner hearth 3 and furnace bottom ash
Cooler 18 connects, and the bottom of furnace bottom ash cooler 18 connects with furnace bottom ash bucket 19.The described bottom of burner hearth 3 is additionally provided with air distribution plate
20。
The top of cyclone separator 6 connects provided with wing passage with heat exchange casing 5, and the top of cyclone separator 6 is provided with top passage
Connected with the inside of heat exchange casing 5；The bottom of cyclone separator 6 is connected by material returning device 7 with the bottom of burner hearth 3；6 under cyclone separator
Bottom connects the first air-introduced machine 8；
The bottom of heat exchange casing 5 connection dust-removal and desulfurizing denitration combined unit 9, dust-removal and desulfurizing denitration combined unit 9 reconnects
Second air-introduced machine 10；
The inside of heat exchange casing 5 is provided with superheater 11, economizer 12, air preheater 13；Superheater 11 is located at heat exchange
The top of casing 5, and it is provided with steam (vapor) outlet 14；Economizer 12 is located at the positive bottom of superheater 11, connects admission port 15；Air is pre-
Hot device 13 is located at economizer bottom；The primary air duct import of air preheater 13 connects primary air fan 16, under outlet burner hearth 3
Portion, so as to which First air is entered inside burner hearth 3 after by smoke pre-heating by pipeline；The Secondary Air pipeline of air preheater 13 enters
Mouth connecting secondary blower fan 17, the middle part of outlet burner hearth 3, so as to which Secondary Air is entered into stove by pipeline after by smoke pre-heating
Inside thorax 3.Primary air fan 16 is placed parallel with 17 overfire air fans, and flow regime is presented in the presence of First air and Secondary Air
Waste lining powder, coal dust, agstone mixture, occur at high temperature the decomposition of cyanide, sulfide collection fluoride it is innoxious
Process；In combustion process keep burner hearth in temperature in the range of 850 DEG C~900 DEG C.
A kind of harmlessness disposing new equipment for electrolytic aluminium waste slot liner that the utility model embodiment is provided is by electrometallurgy aluminium
Waste lining combines carry out cooperative disposal with fluidized-bed combustion boiler burning process, has both met the industry industrial production such as thermoelectricity, there is provided
On the premise of meeting standard quality and the industrial steam or electric energy of quantity, the innoxious system of electrolytic aluminium hazardous waste is realized again
System disposal.Importantly, the synergic processing process is based only upon Incineration in CFB technique, and thrown without any hardware is increased
Money, thus save a set of heat treatment system.Meanwhile for traditional Incineration in CFB technique, do not have substantially
Increase operating cost.
As shown in Fig. 2 a kind of harmlessness disposing technique method of electrolytic aluminium solid waste using said apparatus, including：
After electrolytic aluminium solid waste waste lining is mixed and crushed with coal, it is sent into from fluid bed boiler furnace middle part；By stone
Lime stone is sent into First air after crushing from air distribution plate bottom feeding burner hearth, Secondary Air in the middle part of burner hearth；This example is by taking waste lining as an example
Others can also reference process.
Specifically, particle diameter of the described waste lining with coal after broken is not more than 13mm；Limestone particle size is not more than 1.5mm；
The waste lining that is added and the weight of coal than for 0.05~0.1：1；The weight of the lime bone coal added than for 0.07~
0.14：1；Here it is 0.2~0.4 to be used for the innoxious lime stone of waste lining with waste lining weight ratio：1, for coal burning
The lime stone of desulfurization is with coal weight than 0.06~0.1：1, lime stone total addition level is above-mentioned two-part summation.
Waste lining powder, coal dust, the agstone mixture of flow regime are presented in the presence of First air and Secondary Air,
Innoxious course of reaction occurs for stove chamber inner combustion；Temperature is 850~950 DEG C in described burner hearth.Innoxious course of reaction includes
Decomposition, the innoxious process of sulfide collection fluoride of cyanide occur at high temperature.
Entered in flue gas caused by combustion process from recirculating fluidized bed middle and upper part in cyclone separator, it is therein heavy winged
Ash is again returned in burner hearth by cyclone separator and material returning device fully to be burnt again, to improve efficiency of combustion；
Flue gas containing light flying dust enters economizer from cyclone separator, is carried out boiler feedwater using fume afterheat
A certain degree of heating, the feedwater after heating enter drum；
Flue gas after the cooling come out from economizer is entered back into air preheater, and pressure fan will be sent using fume afterheat
First air, the Secondary Air entered is preheated；
The flue gas come out from air preheater qualified discharge after the fume treatments such as dedusting, desulfurization.
Embodiment one
Coal weight 100kg is taken, waste lining 7kg is added, after mixing, is crushed to particle size and is not more than 13mm, pass through
Charging aperture is sent into from the middle part of recirculating fluidized bed burner hearth.Meanwhile lime stone 9kg is taken, it is crushed to particle diameter and is not more than 1.5mm, then
With First air burner hearth is sent into from air distribution plate bottom.Secondary Air is sent into the middle part of air distribution plate.The burning temperature of Fluidized Boiler Bed
Degree control is at 860 DEG C.Innoxious reacted waste lining is discharged in the form of clinker.
Harmfulness detection is carried out to clinker according to hazardous waste judging standard, Leaching standard (GB5085.3-2007),
Inorganic fluoride (not including calcirm-fluoride, in terms of F-) is 5.6mg/L in leachate, cyanide 0.028mg/L, is effectively reduced
The leaching content of harmful poisonous substance, realize innoxious (being no longer hazardous waste).
Embodiment two
Coal weight 200kg is taken, waste lining 20kg is added, after mixing, is crushed to particle size and is not more than 10mm, pass through
Charging aperture is sent into from the middle part of recirculating fluidized bed burner hearth.Meanwhile lime stone 28kg is taken, it is crushed to particle diameter and is not more than 1.0mm, so
Afterwards burner hearth is sent into First air from air distribution plate bottom.Secondary Air is sent into the middle part of air distribution plate.The burning of Fluidized Boiler Bed
Temperature control is at 900 DEG C.Innoxious reacted waste lining is discharged in the form of clinker.
Harmfulness inspection is carried out to furnace clinker according to hazardous waste judging standard, Leaching standard (GB5085.3-2007)
Survey, inorganic fluoride (not including calcirm-fluoride, in terms of F-) is 0.3mg/L, cyanide 0.007g/L in leachate, is effectively reduced
The leaching content of harmful poisonous substance, is realized innoxious (being no longer hazardous waste).
It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model discloses
Change or replacement, should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should
It is defined by the protection domain of claims.
Claims (3)
- A kind of 1. harmlessness disposing device of electrolytic aluminium solid waste, it is characterised in that：Including：Limestone silo (1), coal bunker (2), Burner hearth (3), drum (4), heat exchange casing (5), cyclone separator (6), material returning device (7), dust-removal and desulfurizing denitration combined unit (9), superheater (11), economizer (12) and air preheater (13)；Limestone silo (1) is connected by the bottom charging aperture of burner hearth (3) with burner hearth (3) inside；Coal bunker (2) passes through in burner hearth (3) Portion's charging aperture inside burner hearth (3) with connecting；The top of burner hearth (3) is connected provided with the passage for leading to drum (4) with drum (4)；Vapour Bag (4) is provided with the passage led at the top of heat exchange casing (5) with being connected inside heat exchange casing (5)；Cyclone separator (6) top connects provided with wing passage with heat exchange casing (5), and it is logical that cyclone separator (6) top is provided with top Road inside heat exchange casing (5) with connecting；Cyclone separator (6) bottom is connected by material returning device (7) with burner hearth (3) bottom；Rotation Wind separator (6) bottom connects the first air-introduced machine (8)；Heat exchange casing (5) bottom connection dust-removal and desulfurizing denitration combined unit (9), dust-removal and desulfurizing denitration combined unit (9) connect again Connect the second air-introduced machine (10)；Superheater (11), economizer (12), air preheater (13) are provided with inside heat exchange casing (5)；Superheater (11) is located at The top of heat exchange casing (5), and it is provided with steam (vapor) outlet (14)；Economizer (12) is located at the positive bottom of superheater (11), connection Admission port (15)；Air preheater (13) is located at economizer bottom；Air preheater (13) primary air duct import connects once Blower fan (16), outlet burner hearth (3) bottom, air preheater (13) Secondary Air pipeline import connecting secondary blower fan (17), go out In the middle part of mouth connection burner hearth (3).
- 2. the harmlessness disposing device of electrolytic aluminium solid waste according to claim 1, it is characterised in that described burner hearth (3) bottom connects with furnace bottom ash cooler (18), and furnace bottom ash cooler (18) bottom connects with furnace bottom ash bucket (19).
- 3. the harmlessness disposing device of electrolytic aluminium solid waste according to claim 1, it is characterised in that described burner hearth (3) bottom is additionally provided with air distribution plate (20).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720601528.3U CN207035141U (en) | 2017-05-26 | 2017-05-26 | The harmlessness disposing device of electrolytic aluminium solid waste |
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| CN201720601528.3U CN207035141U (en) | 2017-05-26 | 2017-05-26 | The harmlessness disposing device of electrolytic aluminium solid waste |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013922A (en) * | 2017-05-26 | 2017-08-04 | 北京石油化工学院 | The harmlessness disposing technique method and apparatus of electrolytic aluminium solid waste |
| CN110514779A (en) * | 2019-07-11 | 2019-11-29 | 西安交通大学 | A kind of experimental system and method for studying coal powder and electrolytic aluminum scraps multifuel combustion characteristic |
-
2017
- 2017-05-26 CN CN201720601528.3U patent/CN207035141U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013922A (en) * | 2017-05-26 | 2017-08-04 | 北京石油化工学院 | The harmlessness disposing technique method and apparatus of electrolytic aluminium solid waste |
| CN110514779A (en) * | 2019-07-11 | 2019-11-29 | 西安交通大学 | A kind of experimental system and method for studying coal powder and electrolytic aluminum scraps multifuel combustion characteristic |
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