CN203725484U - Harmless disposal system for aluminum electrolysis waste carbon residue - Google Patents
Harmless disposal system for aluminum electrolysis waste carbon residue Download PDFInfo
- Publication number
- CN203725484U CN203725484U CN201420110516.7U CN201420110516U CN203725484U CN 203725484 U CN203725484 U CN 203725484U CN 201420110516 U CN201420110516 U CN 201420110516U CN 203725484 U CN203725484 U CN 203725484U
- Authority
- CN
- China
- Prior art keywords
- valve
- disposal system
- regenerator
- gas
- furnace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Electrolytic Production Of Metals (AREA)
Abstract
The utility model discloses a harmless disposal system for aluminum electrolysis waste carbon residue and aims to solve the technical problems of low recovery rate of carbon residue and environmental pollution caused by the carbon residue. The harmless disposal system comprises a heating furnace, a heating circulation device, an exhaust gas purification device, a hopper correspondingly communicated with the heating furnace and a raw material bin correspondingly communicated with the hopper; the heating circulation device is correspondingly communicated with the heating furnace and the raw material bin respectively; an exhaust gas outlet communicated with the exhaust gas purification device is formed in the raw material bin. According to the utility model, problems of stack of carbon residue in waste tank lining or the land filling causing environmental pollution and waste of abundant raw materials and the like puzzling the electrolytic aluminum industry for years are effectively solved.
Description
Technical field
The present invention and a kind of useless breeze treatment system, relate in particular to the useless breeze innocuity disposal system of a kind of aluminium electroloysis.
Background technology
Aluminium is as important basic industries raw material, electrolytic aluminium belongs to important light non-ferrous metal industry, in national economy, occupy very important status, be widely used in a plurality of industries such as traffic, national defence, electric power, machinery, building, light industry, space flight, and along with scientific and technological development, the application of aluminium will be more extensive.In Aluminum Electrolysis Production process, due to anode carbon body do not participate in completely reaction, be for a long time subject to electrolyte erosion and scrub, the various reasons such as off quality can form carbon slag in electrolytic cell; And negative electrode carbon element liner and other furnace building materials are subject to the erosion of sodium, electrolyte and aluminium for a long time and absorb a large amount of containing villiaumite, the effect of stress simultaneously producing in erosion process can make electrolytic cell distortion and inner lining damage, electrolytic cell must carry out large repairs running to certain life-span (6～8 years), during overhaul, cell lining will be changed, and comprise bottom cathode carbon piece, refractory brick, insulating brick and impervious material and sidepiece silicon carbide brick.Therefore in Aluminum Electrolysis Production, casting process and in electrolytic cell overhaul process, can produce a large amount of breezes, aluminium ash, anode scrap, waste cathode carbon block, useless insulating brick, waste refractory materials and useless cathode square steel etc., this class material is referred to as electrolytic aluminium breeze.According to statistics, every production and one ton of aluminium of casting, approximately produce 10-20kg breeze, 20-30kg aluminium ash, the useless negative electrode of 20-30kg, 25-35kg waste refractory materials.And along with the increase of electrolytic aluminium output, the amount of this type of breeze is also increasing sharply.2013, China's primary aluminum output reached 2,300 ten thousand tons, accounts for 45% of global total output, approximately 300,000 tons of the breeze discharge capacitys of generation, and approximately 200,000 tons of aluminium ash discharge capacitys, waste and old carbon cathode discharge capacity reaches 400,000 tons, 480,000 tons, refractory material.Owing to all containing a certain amount of soluble fluorinated sodium in such breeze; according on June 6th, 2008, Environmental Protection Department, the National Development and Reform Commission combined the Hazardous Waste List > > of < < country (Environmental Protection Department, the National Development and Reform Commission the make No. 1) regulation of issue, and such discarded object belongs to industrial dangerous waste.Simultaneously, by leaching test, prove, in these breezes, in its leachate, fluorine content can reach 6000mg/L, the content that CN-content can reach 10～40mg/L(note: F-and CN-because of the difference of grooved, service life, cell lining structure, operating procedure different), substantially exceeded the F of national < < hazardous waste judging standard one leaching characteristic identification > > (GB5085.3-2007) standard-required regulation
-< 50mg/L, CN
-120 times and 10～40 times of < 1mg/L.Therefore electrolytic aluminium breeze is also identified as industrial dangerous waste, and is called in the industry " stealthy bomb ".At present, the mode that electrolytic aluminium factory mostly adopts air storage to such breeze or builds slag field landfill is processed, a large amount of soils have not only been taken, and the soluble fluoride wherein containing, cyanide also can flow into rivers with rainwater, permeate the ground contaminated soil and underground water, surface water, cause very big harm to around ecological environment, human health and animal and plant growth, destroys ecological environment, affect Agro-ecology balance, make crop production reduction.This type of harm is serious, long-term, irreversible, this with build low input, high production, low consumption, few discharge, can circulate, continuable conservation-minded society disagrees.
At present such breeze is adopted technology have:
(1) flotation technology; The weak point that this technology exists has: at the bottom of reclaiming electrolyte purity, can not directly use: in the electrolyte of recovery, carbon containing approximately 5%, and is mingled with flotation agent.Directly use can cause fine carbon granules and other organic substance to burn in electrolyte, brings out anode effect, is unfavorable for electrolytic cell stable operation.Must carry out could using after roasting carbon elimination and flotation agent; Secondly the waste water fluorine content overproof that flotation produces, directly outer row: the about 100mg/L of fluorine content in flotation waste water, higher than industrial wastewater discharge limit value 10mg/L, must carry out wastewater treatment; Finally, the flotation technology electrolyte rate of recovery, the end of compared with, is about 85%: in the carbon dust that flotation is reclaimed, still contain electrolyte approximately 10%, in waste water, also contain a certain amount of electrolyte, the carbon dust reclaiming, because electrolyte content is higher, can not return to carbon element system and use, and floatation process is complicated, and cost is higher; Exactly because the restriction of above factor, floatation is processed breeze and is just rested at home the experimental stage, does not in industry promote and comes.
(2) pyrogenic attack technology; The weak point that this technology exists is: first, the rate of recovery is lower, is about 85%, can exist fluoride to decompose volatilization phenomenon, contaminated environment in heating process; Secondly, cost recovery is higher, reclaims coke, the electric energy of 100KW, 10NM that 1 ton of finished product approximately consumes 1 ton
3oxygen; Moreover the tail gas of recovery, owing to containing a large amount of dust and fluoride, cyanide, can not directly discharge, must reclaim through dedusting and fluoride, complex procedures, processing cost are high; Because this technology exists above-mentioned inferior position, thereby be not applied popularization in industry.
Therefore, in order to address the above problem, to need a kind of System and method for that can better reclaim material in breeze badly, and can not produce harmful gas or liquid in recycling, avoid environment to cause brokenly and change, coordinate mutually with current sustainable development and environmental protection.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, adapt to reality needs, a kind of aluminium electroloysis breeze innocuity disposal system that gives up is provided, be intended to solve current aluminum electrolysis industry not high and in heating process to breeze recovery utilization rate, existing heating furnace is on temperature, impact causes the volatilize tail gas of inhomogeneous generation of decomposition such as breeze to cause the technical problem of the phenomenon of environmental pollution, part raw material sintering due to excess Temperature compared with causing greatly fire box temperature skewness.
In order to realize object of the present invention, the technical solution adopted in the present invention is:
Design the useless breeze innocuity disposal system of a kind of aluminium electroloysis, comprise heating furnace, heat cycles device, exhaust gas cleaner, with the hopper of the corresponding connection of described heating furnace, with the corresponding raw material cabin that is communicated with setting of described hopper; Described heating furnace comprises burner hearth, the first regenerator that described heat cycles device comprises air-introduced machine, air blast, all connections corresponding to described burner hearth and the second regenerator, respectively with described the first regenerator and the corresponding San of connection of the second regenerator road air inlet reversal valve Ji San road reversal valve of giving vent to anger; The air entry of described air-introduced machine all with the corresponding connection of reversal valve of giving vent to anger of described three road air inlet reversal valve Ji San roads, the connection corresponding to raw material cabin of its gas outlet; The exhaust outlet correspondence of described air blast is communicated in the described three road air inlet reversal valve Ji San roads reversal valve of giving vent to anger; At the first regenerator, the second regenerator and burner hearth connector place, be provided with in described burner hearth and spray into gas spray head combustion gas and for burner hearth is heated; On described raw material cabin, be provided with the tail gas gas outlet that is communicated in described exhaust gas cleaner.
In the inside of described the first regenerator and the second regenerator, be provided with the cellular heat storage of being made by pottery.
Also comprise that first cuts soon valve, second and cut soon valve, gas consumption adjusting valve, described combustion gas is cut soon valve or second via the gas consumption adjusting valve, first of correspondence setting successively and is cut soon valve and enter in burner hearth.
At the gas outlet place of described air blast, be also provided with air flow rate adjustment valve, outside air enters in burner hearth via air flow rate adjustment valve, the three road air inlet reversal valve Huo San roads reversal valve of giving vent to anger successively; Air inlet place at described air-introduced machine is also provided with flue gas flow control valve.
Described heating furnace comprises furnace roof, body of heater and furnace bottom; In described furnace roof, furnace bottom corresponding position, be respectively arranged with charging aperture and discharging opening, described body of heater comprises that furnace lining layer, plug draw containing chromium fibrage, outer shell from the inside to the outside successively, and described furnace roof comprises that furnace lining layer, plug draw containing chromium fibrage from the inside to the outside successively; Described furnace bottom comprises castable refractory, clay brick, light fire brick, tapetum fibrosum layer from the inside to the outside successively.
On described body of heater, corresponding position is provided with for clearing up the slag notch of slag, and at the hinged fire door that is connected with of described slag notch place correspondence; Described fire door is by comprising successively outside interior that shaped steel, steel plate, plug draw containing chromium fibrage, fire door shield; Described fire door shield is spliced by the heat-resisting cast iron piece of some, and is provided with dilatation joint between each casting pig.
The plug at described body of heater, furnace roof position draws containing the fibrolaminar thickness of chromium and is 300～400mm.
Also comprise automatic monitoring mechanism; Described automatic monitoring mechanism comprise Programmable Logic Controller, all with the alarm lamp of the corresponding connection of described Programmable Logic Controller, alert loudspeaker, display, for inputting control button group, at least one temperature sensor and the pressure sensor of relative set information; Described temperature sensor and pressure sensor correspondence are arranged at the inside of burner hearth; Described air flow rate adjustment valve, gas consumption adjusting valve, cigarette steam flow adjustable valve, first are cut soon valve, three road air inlet reversal valves, the three roads reversal valve, second of giving vent to anger and are cut soon valve and be magnetic valve and all connections corresponding to Programmable Logic Controller.
The useless breeze method for innocent treatment of aluminium electroloysis based on native system, comprises the steps:
(1) first breeze be ground into graininess and put into the raw material cabin of the useless breeze innocuity disposal system of aluminium electroloysis as mentioned above; Carry out again step (2) or (3);
(2) start heat cycles device, outside air enters in burner hearth via described air blast, three road air inlet reversal valves, the first regenerator successively, combustion gas simultaneously passes into toward stove chamber inner combustion via described gas consumption adjusting valve successively, and burner hearth is heated to 1250～1350 ℃; High-temperature gas enters in raw material cabin breeze is preheated to 130～150 ℃ via give vent to anger reversal valve, air-introduced machine of the second regenerator, three roads successively in burner hearth;
(3) start heat cycles device, outside air enters in burner hearth via give vent to anger reversal valve, the second regenerator of described air blast, three roads successively, combustion gas simultaneously passes into toward stove chamber inner combustion via described gas consumption adjusting valve successively, and burner hearth is heated to 1250～1350 ℃; In burner hearth, high-temperature gas enters in raw material cabin breeze is preheated to 130～150 ℃ via the first regenerator, three road air inlet reversal valves, air-introduced machine successively;
(4) low temperature exhaust gas after the preheating of raw material cabin Raw is entered in exhaust gas cleaner to purified treatment via the tail gas gas outlet on it up to standard rear emptying;
(5) in raw material cabin, the breeze after preheating is sent in heating furnace and is added thermal decomposition 7～8 hours via hopper;
(6) in burner hearth, the electrolyte after decomposition is discharged via discharging opening, and carbon dust is discharged via slag notch.
Hocket successively in described step (2), (3).
Beneficial effect of the present invention is:
1. the present invention can effectively solve puzzlement aluminum electrolysis industry breeze stacking or landfill contaminated environment for many years, causes the problems such as a large amount of waste of raw materials, and this system has the features such as technique advanced person, mentality of designing is novel, control is accurate, energy consumption is low, pollution-free.
2. utilize the carbon dust that the present invention reclaims can secondary utilization, and adopt electrolyte content≤1% in the carbon dust that the present invention reclaims, make it can be directly used in manufacture carbon materials.
3., when the present invention does not produce the pollutants such as waste water,waste gas and industrial residue in processing breeze process, can avoid the pollution to environment; And the present invention at work energy consumption is lower, production cost is comparatively cheap.
4. heating furnace of the present invention uniformity of temperature profile in heating process, each expect room temperature poor≤5 ℃, can effectively to harmful substance in discarded object, decompose volatilization.
5. the present invention can realize the efficient preheat function of low temperature exhaust gas to raw material, can save fuel, reduce costs.
6. the present invention can realize exhaust emissions temperature≤150 ℃, reversal valve gas outlet; Terminal tail gas exhaust temperature≤80 ℃; Electrolyte purity reaches ice crystal state II standard; Carbon dust purity >=98%; The villiaumite rate of recovery >=98%.
Accompanying drawing explanation
Fig. 1 is system architecture schematic diagram of the present invention;
Fig. 2 be in the present invention heat cycles device and with burner hearth connection diagram;
Fig. 3 is heating furnace schematic diagram in the present invention;
Fig. 4 is fire door primary structure schematic diagram in the present invention;
In figure: 1. burner hearth; 2. first cut soon valve; 3. the first regenerator; 4.San road air inlet reversal valve; 5. air flow rate adjustment valve; 6. air-introduced machine; 7. cigarette steam flow adjustable valve; 8. air blast; The 9.San reversal valve of giving vent to anger in road; 10. the second regenerator; 11. gas consumption adjusting valves; 12. gas inlets; 13. second cut valve soon; 14. second regenerator and heating furnace connector; 15. tapetum fibrosum layers; 16. charging apertures; 17,29. furnace lining layers; 18,24. steel plates; 19,26,28. plugs draw containing chromium fibrage; 20. slag notches; 21. discharging openings; 22. bodies of heater; 23. shaped steel; 25. fire door shields; 27. first regenerator and heating furnace connector; 30. castable refractories; 31. clay bricks; 32. light fire bricks.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further described:
Embodiment 1: a kind of aluminium electroloysis breeze innocuity disposal system that gives up, referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, comprise heating furnace, heat cycles device, exhaust gas cleaner, with the hopper of the corresponding connection of described heating furnace, with the corresponding raw material cabin arranging that is communicated with of described hopper; Described heating furnace comprises burner hearth 1, the first regenerator 3 that described heat cycles device comprises all connections corresponding to described burner hearth and the second regenerator 10, air-introduced machine 6, air blast 8, respectively with described the first regenerator 3 and the corresponding San of connection of the second regenerator 10 road air inlet reversal valve 4 Ji San roads reversal valve 9 of giving vent to anger; The corresponding connection of reversal valve of giving vent to anger of the air entry of described air-introduced machine and described three road air inlet reversal valve Ji San roads, the connection corresponding to raw material cabin of its gas outlet; The exhaust outlet correspondence of described air blast 8 is communicated in the described three road air inlet reversal valve 4 Ji San roads reversal valve 9 of giving vent to anger; In the first regenerator 3, the second regenerator 10, be provided with in described burner hearth and spray into combustion gas for the gas spray head to burner hearth heating with burner hearth connector 27,14 places; On described raw material cabin, be provided with the tail gas gas outlet that is communicated in described exhaust gas cleaner.In described the first regenerator 3 and the second regenerator 10 inside, be provided with the cellular heat storage of being made by pottery.
Also comprise that first cuts soon valve 2, second and cut soon valve 13, gas consumption adjusting valve 11, described combustion gas is cut soon valve or second via the gas consumption adjusting valve, first of correspondence setting successively and is cut soon valve and enter in burner hearth.
At the gas outlet place of described air blast 8, be also provided with air flow rate adjustment valve 5, outside air enters in burner hearth via air flow rate adjustment valve 5, the three road air inlet reversal valve 4 Huo San roads reversal valve 9 of giving vent to anger successively; Air inlet place at described air-introduced machine 6 is also provided with flue gas flow control valve 7.
Described heating furnace comprises furnace roof, body of heater 22 and furnace bottom; In described furnace roof, furnace bottom corresponding position, be respectively arranged with charging aperture and discharging opening, described body of heater comprises that furnace lining layer 17, plug draw containing chromium fibrage 19, outer shell from the inside to the outside successively, this outer shell is made by steel plate 18, and described furnace roof comprises that furnace lining layer 29, plug draw containing chromium fibrage 28 from the inside to the outside successively; Described furnace bottom is by comprising successively castable refractory 30, clay brick 31, light fire brick 32, tapetum fibrosum layer 15 outside interior.
On described body of heater, corresponding position is provided with for clearing up the slag notch 20 of slag, and at the corresponding hinged fire door that is connected with in described slag notch 20 places; Described fire door is by comprising successively outside interior that shaped steel 23, steel plate 24, plug draw containing chromium fibrage 26, fire door shield 25; Described fire door shield is spliced by the heat-resisting cast iron piece of some, and is provided with dilatation joint between each casting pig.
The plug at described body of heater 22, furnace roof position draws the thickness containing chromium fibrage 28 to be 300～400mm, preferably 350mm.
Native system also comprises automatic monitoring mechanism; Described automatic monitoring mechanism comprise Programmable Logic Controller, all with the alarm lamp of the corresponding connection of described Programmable Logic Controller, alert loudspeaker, display, for inputting control button group, at least one temperature sensor and the pressure sensor of relative set information; Described temperature sensor and pressure sensor correspondence are arranged at the inside of burner hearth; Described air flow rate adjustment valve, gas consumption adjusting valve, cigarette steam flow adjustable valve, first are cut soon valve, three road air inlet reversal valves, the three roads reversal valve, second of giving vent to anger and are cut soon valve and be magnetic valve and all connections corresponding to Programmable Logic Controller.
The method that the useless breeze innocuity disposal system of this aluminium electroloysis carries out breeze harmless treatment, comprises the steps:
(1) first breeze be ground into graininess and put into the raw material cabin of the useless breeze innocuity disposal system of aluminium electroloysis as mentioned above; Carry out again step (2) or (3);
(2) start heat cycles device, outside air enters in burner hearth via described air blast, three road air inlet reversal valves, the first regenerator successively, combustion gas simultaneously passes into toward stove chamber inner combustion via described gas consumption adjusting valve successively, and burner hearth is heated to 1250～1350 ℃; High-temperature gas enters in raw material cabin breeze is preheated to 130～150 ℃ via give vent to anger reversal valve, air-introduced machine of the second regenerator, three roads successively in burner hearth;
(3) start heat cycles device, outside air enters in burner hearth via give vent to anger reversal valve, the second regenerator of described air blast, three roads successively, combustion gas simultaneously passes into toward stove chamber inner combustion via described gas consumption adjusting valve successively, and burner hearth is heated to 1250～1350 ℃; In burner hearth, high-temperature gas enters in raw material cabin breeze is preheated to 130～150 ℃ via the first regenerator, three road air inlet reversal valves, air-introduced machine successively;
(4) low temperature exhaust gas after the preheating of raw material cabin Raw is entered in exhaust gas cleaner to purified treatment via the tail gas gas outlet on it up to standard rear emptying;
(5) in raw material cabin, the breeze after preheating is sent in heating furnace and is added thermal decomposition 7～8 hours via hopper;
(6) in burner hearth, the electrolyte after decomposition is discharged via discharging opening, and carbon dust is discharged via slag notch.
Hocket successively in above-mentioned steps (2), (3).
The present embodiment will be described as follows above step:
After air enters burner hearth 1 and is heated, taking out the gas drawing around forms one oxygen content and is significantly less than 21% thin oxygen deprivation high temperature gas flow, continue toward injecting combustion gas (or fuel oil) near thin high temperature air, combustion gas realizes burning under oxygen deprivation (3～15%) state so simultaneously; Flue gas after the meanwhile interior burning of burner hearth 1 is through the second regenerator 10(or the first regenerator 3) by air-introduced machine 6, extract out and send in raw material cabin, realize the raw material in raw material cabin is preheated to 150 ℃ of left and right by room temperature, can further improve the thermal efficiency of fuel; Flue gas after breeze in raw material cabin and heating is entered in exhaust gas cleaner and discharged after purification.The warm flue gas of height in burner hearth 1 is by the second regenerator 10(or the first regenerator 3) time, in heat storage by thermal energy storage in first, second regenerator, then with the low-temperature flue gas of 150 ~ 200 ℃, through the corresponding San road reversal valve (three road air inlet reversal valves) of giving vent to anger, enter in air-introduced machine, and then be delivered in raw material cabin.Operating temperature not Gao tri-road air inlet reversal valves, the three roads reversal valve and first of giving vent to anger is cut soon valve, second and is cut soon valve and switch with certain frequency, make that in two regenerator, heat storage is in accumulation of heat and heat release alternation state, conventional switching cycle is 30 ~ 200 seconds.The main advantage of this heat cycles device is: energy-saving potential is huge, average energy-conservation more than 35%.Thereby can discharge less carbon dioxide more than 25% to atmospheric environment, greatly alleviated the greenhouse effects of atmosphere; Expanded flame combustion region, the border of flame almost expands to the border of burner hearth, thereby makes the interior temperature of burner hearth even, has improved product quality so on the one hand, has extended on the other hand the burner hearth life-span; For continuous furnace, the mean temperature of furnace superintendent direction increases, and has strengthened furnace heat transfer, cause its size of burner hearth of industrial furnace of same output can dwindle more than 20%, in other words, the output of its product of stove of same length can improve more than 20%, greatly reduces the cost of equipment; Because flame does not produce in burner, but in furnace cavity, just start to burn gradually, thereby combustion noise is low; Adopt traditional energy-saving combustion technology, combustion air preheat temperature is higher, and in flue gas, NOx content is larger; And adopting this device air burning technology, in the situation that combustion air preheat temperature is very high, NOx content has greatly reduced; Combustion with meagre oxygen, is conducive to produce reducing flame in burner hearth, can guarantee heating and the technological requirement such as heating, more energy-conservation 40% than ordinary combustion mode, than traditional heat storage type combustion mode further energy-conservation 15%.
Heating furnace of the present invention comprises from top to bottom corresponding furnace roof, body of heater and the furnace bottom arranging successively; In described furnace roof, furnace bottom corresponding position, be respectively arranged with charging aperture 16 and discharging opening 21, described body of heater 22 comprises that furnace lining layer 17, plug draw the outer shell 18 of making containing chromium fibrage 19, steel plate, described furnace roof to comprise successively that from the inside to the outside furnace lining layer 29, plug draw containing chromium fibrage 28 from the inside to the outside successively; Described furnace bottom is by comprising successively castable refractory 30, clay brick 31, light fire brick 32, tapetum fibrosum layer 15 outside interior; On described body of heater 22, corresponding position is provided with for clearing up the slag notch 20 of slag, and at the hinged fire door that is connected with of described slag notch place correspondence; Described fire door consists of by setting gradually outside interior containing chromium fibrage 19 shaped steel 23, steel plate 24, fire door shield 25 and Sai La; Described fire door shield 25 is comprised of a plurality of heat-resisting cast iron pieces, between each casting pig, is provided with dilatation joint; Dilatation joint between the heat-resisting cast iron at fire door shield place, can guarantee that the long-term use of fire door is indeformable; In addition, the backplate at fire door place is level and smooth metal covering in the present invention, when contacting and compressing containing chromium fiber surface with fire door, makes stove gate reach good sealing surface; Lining body on fire door makes the structure of boss, can protect fire door shield structure, can realize again the combination seal with fire door; In addition, the framework of the fire door in the present invention adopts i shaped steel and U-steel to be welded.
Above-mentioned castable refractory is accounted for 60～65% AL by percentage by weight
2o
3form with clay; In described light fire brick, include percentage by weight to account for>=30% AL
2o
3; Described clay brick is accounted for 50～65% AL by percentage by weight
2o
3, 2.0～2.5% Fe
2o
3casting is made with clay; Described tapetum fibrosum is accounted for respectively 52～57% AL by percentage by weight
2o
3, < 0.2% Na
2o+K
2o, > 99%AL
2o
3+ SiO
2, the Fe of < 0.2%
2o
3form.Heating furnace in the present invention in actual applications the highest furnace temperature of inside is 1400 ℃; The fuel using is combustion gas, has advantages of cleanliness without any pollution; The plug at described body of heater, furnace roof position draws containing the fibrolaminar thickness of chromium and is 350mm.
Further, temperature sensor in automatic monitoring mechanism in the present invention and the internal temperature in pressure sensor real-time monitoring hearth, and by result feedback to Programmable Logic Controller (PLC), finally its result is shown to display, be convenient to the variation of staff's Real-Time Monitoring working environment, and make timely corresponding processing by the prompting of alarm lamp and alert loudspeaker.
In actual production, the useless breeze innocuity disposal system of aluminium electroloysis of the present invention can solve puzzlement aluminum electrolysis industry breeze stacking or landfill contaminated environment for many years, cause a large amount of problems such as waste of raw materials, and electrolyte content≤2% in the carbon dust after reclaiming, can be directly used in manufacture carbon materials; The refractory material, Impervious Materials, the carbon materials purity that reclaim are high: refractory material, Impervious Materials, carbon materials purity >=98%, can directly return to Nai Caihe carbon element enterprise and do raw material use; In addition, adopt the present invention in processing breeze process, to produce the pollutants such as waste water,waste gas and industrial residue of minute quantity, can reduce the pollution to environment, terminal tail gas exhaust temperature≤80 ° C; The electrolyte purity reclaiming reaches ice crystal state II standard; Carbon dust purity >=98% reclaiming; The villiaumite rate of recovery >=98%, has realized electrolytical high-purity and has reclaimed; Make the breeze comprehensive utilization ratio of electrolytic aluminium reach 98%, exhaust emissions meets national exhaust emission standard.
Adopt native system and method thereof to carry out statistic analysis result after harmless treatment as shown in table 1, table 2 at the useless carbon slag to three batches:
Table 1: rate of recovery statistics
Table 2: the electrolyte ingredient analysis result of recovery
In the former breeze of table 1, after electrolyte accounting and recovery, electrolyte accounting can draw, adopts the present invention, has realized electrolytical high-purity and has reclaimed; Can infer thus, in remaining carbon dust, only contain a small amount of electrolyte.
What embodiments of the invention were announced is preferred embodiment, but is not limited to this, those of ordinary skill in the art; very easily, according to above-described embodiment, understand spirit of the present invention, and make different amplifications and variation; but only otherwise depart from spirit of the present invention, all in protection scope of the present invention.
Claims (10)
1. the useless breeze innocuity disposal system of aluminium electroloysis, comprise heating furnace, heat cycles device, exhaust gas cleaner, with the hopper of the corresponding connection of described heating furnace, with the corresponding raw material cabin that is communicated with setting of described hopper; Described heating furnace comprises burner hearth, it is characterized in that: the first regenerator that described heat cycles device comprises air-introduced machine, air blast, all connections corresponding to described burner hearth and the second regenerator, respectively with described the first regenerator and the corresponding San of connection of the second regenerator road air inlet reversal valve Ji San road reversal valve of giving vent to anger; The air entry of described air-introduced machine all with the corresponding connection of reversal valve of giving vent to anger of described three road air inlet reversal valve Ji San roads, the connection corresponding to raw material cabin of its gas outlet; The exhaust outlet correspondence of described air blast is communicated in the three road air inlet reversal valve Ji San roads reversal valve of giving vent to anger; At the first regenerator, the second regenerator and burner hearth connector place, be provided with in burner hearth and spray into gas spray head combustion gas and for burner hearth is heated; On described raw material cabin, be provided with the tail gas gas outlet that is communicated in described exhaust gas cleaner.
2. the useless breeze innocuity disposal system of aluminium electroloysis as claimed in claim 1, is characterized in that: in the inside of described the first regenerator and the second regenerator, be provided with the cellular heat storage of being made by pottery.
3. the useless breeze innocuity disposal system of aluminium electroloysis as claimed in claim 1, is characterized in that: also comprise that first cuts soon valve, second and cut soon valve, gas consumption adjusting valve, described first cuts valve, second soon cuts soon valve and be all communicated with gas consumption adjusting valve.
4. the useless breeze innocuity disposal system of aluminium electroloysis as claimed in claim 3, is characterized in that: the place, gas outlet at described air blast is also provided with air flow rate adjustment valve, and described three road air inlet reversal valves, the three roads reversal valve of giving vent to anger is all communicated with air flow rate adjustment valve; Air inlet place at described air-introduced machine is also provided with flue gas flow control valve.
5. the useless breeze innocuity disposal system of aluminium electroloysis as claimed in claim 1, is characterized in that: described heating furnace comprises furnace roof, body of heater and furnace bottom; In described furnace roof, furnace bottom corresponding position, be respectively arranged with charging aperture and discharging opening, described body of heater comprises that furnace lining layer, plug draw containing chromium fibrage, outer shell from the inside to the outside successively, and described furnace roof comprises that furnace lining layer, plug draw containing chromium fibrage from the inside to the outside successively; Described furnace bottom is by comprising successively castable refractory, clay brick, light fire brick, tapetum fibrosum layer outside interior.
6. the useless breeze innocuity disposal system of aluminium electroloysis as claimed in claim 5, is characterized in that: on described body of heater, corresponding position is provided with for clearing up the slag notch of slag, and at the hinged fire door that is connected with of described slag notch place correspondence; Described fire door comprises that shaped steel, steel plate, plug draw containing chromium fibrage, fire door shield from the inside to the outside successively; Described fire door shield is spliced by the heat-resisting cast iron piece of some, and is provided with dilatation joint between each casting pig.
7. the useless breeze innocuity disposal system of aluminium electroloysis as claimed in claim 5, is characterized in that: the plug at described body of heater, furnace roof position draws containing the fibrolaminar thickness of chromium and is 300～400mm.
8. the useless breeze innocuity disposal system of aluminium electroloysis as claimed in claim 4, is characterized in that: also comprise automatic monitoring mechanism; Described automatic monitoring mechanism comprise Programmable Logic Controller, all with the alarm lamp of the corresponding connection of described Programmable Logic Controller, alert loudspeaker, display, for inputting control button group, at least one temperature sensor and the pressure sensor of relative set information; Described temperature sensor and pressure sensor correspondence are arranged at the inside of burner hearth.
9. the useless breeze innocuity disposal system of aluminium electroloysis as claimed in claim 8, is characterized in that: described gas consumption adjusting valve, first is cut soon valve, second and cut soon valve and be magnetic valve and all connections corresponding to Programmable Logic Controller.
10. the useless breeze innocuity disposal system of aluminium electroloysis as claimed in claim 8, is characterized in that: described air flow rate adjustment valve, cigarette steam flow adjustable valve, three road air inlet reversal valves, the three roads reversal valve of giving vent to anger is magnetic valve and all connections corresponding to Programmable Logic Controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420110516.7U CN203725484U (en) | 2014-03-12 | 2014-03-12 | Harmless disposal system for aluminum electrolysis waste carbon residue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420110516.7U CN203725484U (en) | 2014-03-12 | 2014-03-12 | Harmless disposal system for aluminum electrolysis waste carbon residue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203725484U true CN203725484U (en) | 2014-07-23 |
Family
ID=51195587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420110516.7U Withdrawn - After Issue CN203725484U (en) | 2014-03-12 | 2014-03-12 | Harmless disposal system for aluminum electrolysis waste carbon residue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203725484U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831285A (en) * | 2014-03-12 | 2014-06-04 | 郑州经纬科技实业有限公司 | Aluminum electrolyzed waste carbon residue innocent treatment system and method thereof |
| CN107459352A (en) * | 2017-09-18 | 2017-12-12 | 沈阳银海机械设备制造有限公司 | The utilization system and technique of aluminium electroloysis danger wastes |
| CN109650343A (en) * | 2018-11-21 | 2019-04-19 | 国家电投集团宁夏能源铝业科技工程有限公司 | A kind of high temperature purification method of fluoride salt in anodic carbon residue |
-
2014
- 2014-03-12 CN CN201420110516.7U patent/CN203725484U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831285A (en) * | 2014-03-12 | 2014-06-04 | 郑州经纬科技实业有限公司 | Aluminum electrolyzed waste carbon residue innocent treatment system and method thereof |
| CN103831285B (en) * | 2014-03-12 | 2015-09-30 | 郑州经纬科技实业有限公司 | Aluminium electroloysis is given up breeze innocuity disposal system and method thereof |
| CN107459352A (en) * | 2017-09-18 | 2017-12-12 | 沈阳银海机械设备制造有限公司 | The utilization system and technique of aluminium electroloysis danger wastes |
| CN109650343A (en) * | 2018-11-21 | 2019-04-19 | 国家电投集团宁夏能源铝业科技工程有限公司 | A kind of high temperature purification method of fluoride salt in anodic carbon residue |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103831285B (en) | Aluminium electroloysis is given up breeze innocuity disposal system and method thereof | |
| CN103302079B (en) | Comprehensive treatment and utilization method of aluminum smelting fluorine-carbon hazardous solid wastes | |
| CN103740939A (en) | Method for producing molten iron and recovering zinc by using zinc-containing dust and sludge of steel plant | |
| CN110860553B (en) | Plasma synergistic resistance furnace fly ash treatment system and treatment method | |
| CN102989744B (en) | Method for recycling mixed material dreg of overhauling groove slag of electrolytic cell | |
| CN106563690A (en) | Fly ash plasma smelting furnace based on plasma arc technology | |
| CN204074682U (en) | A kind of old circuit board plasma treatment energy effect system | |
| CN203725484U (en) | Harmless disposal system for aluminum electrolysis waste carbon residue | |
| CN108530031A (en) | A kind of device and method of the firing porous ceramics of incineration of refuse flyash | |
| CN109609149A (en) | Waste lithium cell recovery and processing system and processing method | |
| CN206069804U (en) | With the anthracitic system of electrolytic aluminium waste cathode carbon block production high graphite | |
| CN110307725A (en) | Useless cathode superhigh temperature purifying furnace and method for innocent treatment | |
| CN211938376U (en) | Fly ash treatment system of plasma synergistic resistance furnace | |
| CN207143351U (en) | Equipment for extracting electrolyte in carbon slag | |
| CN204612504U (en) | A kind of flue gas cooling dust arrester installation of external-heat reduction roasting rotary kiln | |
| CN210321183U (en) | Waste cathode ultrahigh temperature purification furnace | |
| CN207527596U (en) | Electrolytic aluminium waste slot liner innocuity disposal system | |
| CN101245416B (en) | Magnesium refining method with vertical kiln vertical pot silicon heat reduction | |
| CN103755312B (en) | Coal gangue brick prepared from aluminum-electrolytic cell waste thermal-insulation materials and preparation method thereof | |
| CN103028592A (en) | Recycle method of water recycled from overhaul slot slag of electrolytic cell | |
| CN205227342U (en) | Reacting furnace is retrieved to useless negative pole of electrolytic aluminum | |
| CN109371256B (en) | Lead recovery equipment and lead recovery process thereof | |
| CN208475973U (en) | Aluminium electroloysis waste lining harmless treatment high temperature continuous fusion furnace | |
| CN106147910A (en) | The anthracitic system and method for high graphite is produced with electrolytic aluminium waste cathode carbon block | |
| CN204509429U (en) | A kind of external-heating rotary kiln for valuable metal synthetical recovery in ion dust mud contaning |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140723 Effective date of abandoning: 20150930 |
|
| RGAV | Abandon patent right to avoid regrant |