CN105546981B - The production roasting system and its process control method of a kind of carbon anode used for aluminium electrolysis - Google Patents
The production roasting system and its process control method of a kind of carbon anode used for aluminium electrolysis Download PDFInfo
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- CN105546981B CN105546981B CN201610093336.6A CN201610093336A CN105546981B CN 105546981 B CN105546981 B CN 105546981B CN 201610093336 A CN201610093336 A CN 201610093336A CN 105546981 B CN105546981 B CN 105546981B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
- C25C3/12—Anodes
- C25C3/125—Anodes based on carbon
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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Abstract
The invention discloses a kind of production roasting system of carbon anode used for aluminium electrolysis and its process control method, lifting beam device of the roasting system including the circulating roaster unit being made up of multiple furnace chambers, the flame control unit being made up of various control frame and for movable flame control unit, each furnace chamber includes the multiple open hoppers being arranged side by side, and the both sides of each hopper are equipped with the quirk of closing；Often set flame control unit controls 20/22 furnace chamber in a flame controlling cycle and a furnace chamber is moved forward after each flame controlling cycle terminates.Roasting system has the advantages that simple in construction, with low cost, high yield rate.The smoke discharge frame ER of process control method branch pipe flue-gas temperature is controlled at 420 DEG C~480 DEG C, the air-negative-pressure power that zero-pressure frame ZPR is controlled is 4~0pa, it has the advantages that production efficiency is high, easy to operate, safe and reliable, productivity ratio more than 15% can be effectively improved, and reduces fuel consumption 10~25%.
Description
Technical field
The present invention relates to a kind of production system of carbon anode, the production of more particularly to a kind of carbon anode used for aluminium electrolysis is calcined
System, and utilize the process control method of roasting system progress carbon anode roasting.
Background technology
The roasting process of carbon anode, is exactly binding agent --- and pitch carbonizes the heat treatment process for becoming coke anode.Pass through
Roasting makes the pitch between carbon particles be transformed into the coke film of solid, make carbon particles connect into certain mechanical strength and
The entirety of physics, chemical property.The quality and quantity that pitch becomes coke directly affects end properties.In carbon anode roasting
During, the pitch in green compact is by the decomposition for occurring a series of complex and polymerisation, and its change procedure is broadly divided into five
Stage：(1) it is increased to from room temperature during 200 DEG C, green compact softening, pitch therein is in mecystasis and is presented slow
Flowing and diffusion, volume slightly have expansion.(2) between 200 DEG C~300 DEG C, green compact gradually discharge moisture, carbon dioxide, an oxygen
Change the composition such as carbon and light oil, and carry out partial polycondensation reaction.(3) between 300 DEG C~500 DEG C, pitch occurs quick point
Solution reaction, largely discharges fugitive constituent, while with a small amount of polymerisation.Being unlikely to undue fierceness for the discharge that makes fugitive constituent causes
Product is cracked, and the heating rate in this stage should slow down.(4) when temperature reaches more than 500 DEG C, polymerization reflection adds
Speed, pitch coking formation pitch coke；The polymerisation of pitch is basically completed at 750 DEG C~800 DEG C, but still has part fugitive constituent row
Go out, the heating rate in this stage can not be too fast；(5) it is to make foreign atom and group in 800 DEG C of later roasting process
Separated from the macromolecular of the coke of generation, and rearrange molecular structure, make coking further perfect, the rank
Section heating rate can be accelerated.
Due to much bigger than the intensity of other interatomic bonds of carbon-carbon bond strength in the phenyl ring of pitch, therefore work as pitch
During thermal decomposition, foreign atom such as hydrogen, oxygen etc. react first, are escaped with the volatile matter of the small molecules such as H2, CO2, CO, CH1,
The elements such as nitrogen, sulphur, boron then according to the combining form of they and carbon, are separated out or stayed in coke.The thermal decomposition of molecule will be in fracture
Place produces unsaturated bonding force, and they at higher temperatures can separate foreign atom or group, then unsaturated with other
Molecule aggregation.Aggregation is nonvolatile residue and gradually forms the huge planar molecule of layering by the molecule being connected firmly, that is, is dripped
It is blue or green burnt.Due to the effect of interlayer non-localized key, the coke that the polycondensation reaction more than 800 DEG C is obtained, its electrical conductivity and thermal conductivity
It will increased dramatically.Coking of the pitch in roasting process in green compact is carried out on solid carbonaceous surface, with oxidative dehydrogenation
The feature of polycondensation.In material base kneading process solid carbonaceous particle surface all adsorb to some extent aerobic, nitrogen, carbon dioxide,
The gases such as carbon monoxide, the gas molecule of absorption has the activity that oxidation-reduction reaction is carried out with asphaltene molecule, can promote charcoal
The formation of cross key between matter particle surface and pitch, and be allowed to be solidified togather, so that the density and intensity of fired article
All it is improved.
Heating rate is to the binding agent in green compact --- and the burnt amount of analysis of pitch and the density of coking have a great impact.Heating
When speed is slow, pitch has time enough to be polymerize and decomposition reaction, the burnt amount increase of analysis, and coking density is also big, therefore can carry
The density of high product and and machine commandment intensity.Meanwhile, when programming rate is slow due in roasting system thermo parameters method it is more uniform, can
To prevent product from occurring crackle in roasting process.In roasting process, the decomposition of asphalt component and polymerisation are mutual in a pair
Inverse homeostasis process, because decomposition reaction be endothermic process, polymerisation is exothermic process, thus heating can make poised state to
Direction is decomposed to carry out, and cooling makes reaction be carried out to direction of polymerization.Sintering temperature represents anode heat-treated degree size
Important indicator, its machine commandment intensity, porosity, ratio resistance, counter electromotive force, gas pickling speed and electrolysis unit consumption etc. one to anode
Serial physical chemical property has important influence.Therefore optimal roasting system is used, the final product quality to improving carbon anode
There is vital effect.
But there is the problem of utilization rate of waste heat is low, production cost is high, security is low in current carbon anode production roasting system,
The roasting system of 54 furnace chambers as shown in Figure 1, configures 3 sets of flame control units altogether, often covers flame control unit in a flame
18 furnace chambers of control in controlling cycle, and a furnace chamber is moved forward after each flame controlling cycle terminates, to circulate roasting
Burn production.Its furnace chamber is separated and arranged in parallel along main shaft with furnace chamber by partition wall, each furnace chamber by multiple open hoppers and
Corresponding closing quirk composition, the corresponding quirk of adjacent furnace chamber is connected through bulkhead, and push-pull valve is can be inserted into partition wall for cutting off
Quirk path between adjacent furnace chamber.During production roasting, green anode is loaded to the open hopper separated by hollow flue wall, is used in combination
Above inserts blind and covering anode., can be along roaster by partition wall quirk from a furnace chamber to another furnace chamber
Form a plurality of independent and circulation quirk.Four combustions able to turn on or off are provided with the upper side wall of the corresponding each quirk of each furnace chamber
Measured hole is burnt, for measuring the temperature and pressure at this in quirk, to carry out state modulator.With regard to existing often set flame control
Unit is controlled for 18 furnace chambers, and to meet the process conditions of carbon anode roasting, each flame controlling cycle at least needs 28 small
When, what is had very arrived up to 36 hours, and production efficiency is relatively low, and its smoke discharge frame ER branch pipe flue-gas temperature general control at 550 DEG C
Left and right, on the one hand because high-temp combustion frame HR3 is less to the furnace chamber between smoke discharge frame ER, makes utilization rate of waste heat relatively low, energy waste
It is more, at the same also make high-temp combustion frame HR3 between smoke discharge frame ER each furnace chamber heating it is relatively fast, easily cause carbon anode into
There is crackle, influence quality and yield rate in product.On the other hand, because the temperature of smoke discharge frame (ER) flue gas is higher, at subsequent purification
The pressure of science and engineering sequence is larger, and security is relatively low easily draws fire incident.
The content of the invention
It is an object of the invention to provide a kind of production roasting system of carbon anode used for aluminium electrolysis and its process control method, institute
Stating roasting system has the advantages that simple in construction, with low cost, high yield rate, and the process control method has production efficiency
High, easy to operate, safe and reliable advantage, can effectively improve productivity ratio more than 15%, and reduce fuel consumption using the present invention
10~25%.
To solve that its low production efficiency of carbon anode roasting system of the prior art, utilization rate of waste heat be low, fuel consumption compared with
Height, and easily the problem of there is cracks influence final product quality, the invention provides the carbon anode used for aluminium electrolysis of two kinds of structure type
Production roasting system, the production roasting system of one of which carbon anode used for aluminium electrolysis, including the circulation being made up of multiple furnace chambers
Roaster unit, at least a set of flame control unit being made up of various control frame and in movable flame control unit control
The lifting beam device of frame processed, each furnace chamber includes the multiple open hoppers being arranged side by side, and the both sides of each hopper are equipped with
The quirk of closing and make only to set equal along its length on a quirk, the upper side wall of every quirk between two adjacent hoppers
Provided with four uniform combustion measurement holes, the inner chamber of combustion measurement hole connection quirk and provided with capping, adjacent two furnace chambers it
Between provided with partition wall and the corresponding quirk of adjacent furnace chamber is interconnected through partition wall, be provided with partition wall for cutting off or opening adjacent
The push-pull valve of correspondence quirk between furnace chamber；Often set flame control unit includes smoke discharge frame ER, thermometric rack of measuring pressure TPR, low temperature combustion
Buck HR1, middle temperature burning rack HR2, high-temp combustion frame HR3, zero-pressure frame ZPR, air blast frame BR and cooling frame CR；
Wherein：Often set flame control unit controls 20 furnace chambers and in the control of each flame in a flame controlling cycle
A furnace chamber is moved forward after end cycle；20 furnace chambers are followed successively by prepackage life along flame moving direction from upstream to downstream
Block furnace chamber, go out ripe piece of furnace chamber, the first pre- cooling furnace chamber of coming out of the stove, the second pre- cooling furnace chamber of coming out of the stove, the first cooling furnace chamber, the second cooling
Furnace chamber, the 3rd cooling furnace chamber, the 4th cooling furnace chamber, the 5th cooling furnace chamber, the 6th cooling furnace chamber, the 7th cooling furnace chamber, high temperature roasting
Burn furnace chamber, heating furnace chamber, medium temperature roast furnace chamber, low-temperature bake furnace chamber, the first preheating preheating furnace chamber, the second preheating furnace chamber, the 3rd
Preheat furnace chamber, the 4th preheating furnace chamber and sealing furnace chamber；The smoke discharge frame ER is erected at the upside of the 4th preheating furnace chamber and is in down
You Duan, thermometric rack of measuring pressure TPR are erected at the upside of the 3rd preheating furnace chamber and in downstream, and low-temperature burning frame HR1 is erected at the
The upper middle side part of three roasting furnace chambers, middle temperature burning rack HR2 is erected at the upper middle side part of the second roast furnace chamber, high-temp combustion frame HR3
The upper middle side part of the first roasting furnace chamber is erected at, zero-pressure frame ZPR is erected at the upside of the 7th cooling furnace chamber and in downstream, drum
Wind frame BR is erected at the upper middle side part of the 4th cooling furnace chamber, and cooling frame CR is erected at the upper middle side part of the first cooling furnace chamber.
The production roasting system of the carbon anode used for aluminium electrolysis of the structure type of the invention is produced with existing carbon anode to be calcined
System is compared, and a preheating furnace chamber is added in the downstream of low-temperature bake furnace chamber, and in high-temperature roasting furnace chamber and medium temperature roast stove
A heating furnace chamber is added between room, preheating zone furnace chamber and roast area furnace chamber is changed into four by three.This structure shape
Single set flame control unit of formula, due to extension, one the distance between from temperature highest high-temp combustion frame HR3 to smoke discharge frame ER
Aspect can make full use of waste heat to reduce energy consumption, and practical application shows that using the present invention fuel consumption 10~25% can be reduced.Together
When can slow down the programming rate of each furnace chamber between the two due to distance extension, it is to avoid there is the phenomenon of crackle in finished product so that
Improve yield rate and product quality.On the other hand, the time of flame controlling cycle can correspondingly be shortened, so as to improve production effect
Rate, using the production roasting system of the carbon anode used for aluminium electrolysis of structure type of the present invention, can make the time of flame controlling cycle most
Low-shrinkage is as short as 24 hours, improves production efficiency more than 15%.In addition, the production roasting of the carbon anode used for aluminium electrolysis using the present invention
Burning system, can make the temperature control of smoke discharge frame ER branch pipe flue gases at 420 DEG C~480 DEG C, and roasting is produced compared to traditional carbon anode
550 DEG C of burning system reduce 70 DEG C~130 DEG C, reduce the pressure of subsequent purification processing system, while security is improved,
Reduce the probability for occurring fire.
The production roasting system for another carbon anode used for aluminium electrolysis that the present invention is provided, including by following that multiple furnace chambers are constituted
Ring roaster unit, at least a set of flame control unit being made up of various control frame and in movable flame control unit
The lifting beam device of control cage, each furnace chamber includes the multiple open hoppers being arranged side by side, and the both sides of each hopper are all provided with
There is the quirk of closing and make only to set on a quirk, the upper side wall of every quirk along its length between two adjacent hoppers
Four uniform combustion measurement holes are equipped with, combustion measurement hole connects the inner chamber of quirk and provided with capping, two adjacent furnace chambers
Between provided with partition wall and the corresponding quirk of adjacent furnace chamber is interconnected through partition wall, be provided with partition wall for cutting off or opening phase
The push-pull valve of correspondence quirk between adjacent furnace chamber；Often set flame control unit includes smoke discharge frame ER, thermometric rack of measuring pressure TPR, low temperature
Burning rack HR1, middle temperature burning rack HR2, high-temp combustion frame HR3, zero-pressure frame ZPR, air blast frame BR and cooling frame CR；
Wherein：Often set flame control unit controls 22 furnace chambers and in the control of each flame in a flame controlling cycle
A furnace chamber is moved forward after end cycle；22 furnace chambers are followed successively by prepackage life along flame moving direction from upstream to downstream
Block furnace chamber, go out ripe piece of furnace chamber, the first pre- cooling furnace chamber of coming out of the stove, the second pre- cooling furnace chamber of coming out of the stove, the first cooling furnace chamber, the second cooling
It is furnace chamber, the 3rd cooling furnace chamber, the 4th cooling furnace chamber, the 5th cooling furnace chamber, the 6th cooling furnace chamber, the 7th cooling furnace chamber, the 8th cold
But furnace chamber, the 9th cooling furnace chamber, high-temperature roasting furnace chamber, heating furnace chamber, medium temperature roast furnace chamber, low-temperature bake furnace chamber, the first preheating
Preheat furnace chamber, the second preheating furnace chamber, the 3rd preheating furnace chamber, the 4th preheating furnace chamber and sealing furnace chamber；The smoke discharge frame ER is erected at
4th preheats the upside of furnace chamber and in downstream, and thermometric rack of measuring pressure TPR is erected at the upside of the 3rd preheating furnace chamber and is in down
You Duan, low-temperature burning frame HR1 are erected at the upper middle side part of the 3rd roasting furnace chamber, and middle temperature burning rack HR2 is erected at the second roasting furnace
The upper middle side part of room, high-temp combustion frame HR3 is erected at the upper middle side part of the first roasting furnace chamber, and it is cold that zero-pressure frame ZPR is erected at the 9th
But the upside of furnace chamber and in downstream, air blast frame BR is erected at the upper middle side part of the 5th cooling furnace chamber, and cooling frame CR is erected at
The upper middle side part of first cooling furnace chamber.
The production roasting system of the carbon anode used for aluminium electrolysis of second of structure type of the invention, with the first structure type phase
Than having increased two furnace chambers in cooling zone and having made both sides of two furnace chambers in air blast frame BR, this structure makes air blast frame BR and height
Furnace chamber between warm burning rack HR3 can fully heat the air themperature sent into by blower fan in quirk, make burning more abundant, enter one
Step improves utilization rate of waste heat, reduces energy consumption.
In the production roasting system of the carbon anode used for aluminium electrolysis of both the above structure type of the present invention, wherein smoke discharge frame ER,
Thermometric rack of measuring pressure TPR, low-temperature burning frame HR1, middle temperature burning rack HR2, high-temp combustion frame HR3, zero-pressure frame ZPR, air blast frame BR and
Cooling frame CR configuration and effect is identical with existing carbon anode roasting system, and smoke discharge frame ER is used for the flue gas for controlling each quirk
Flow and temperature, and a plurality of row connected respectively with smoke evacuation house steward and each quirk including smoke evacuation support, smoke evacuation house steward and two ends
Flue gas flow regulating valve is mounted on cigarette pipe, each bar smoke evacuation branch pipe, smoke discharge frame control section is provided with negative pressure transmitter and survey
Warm galvanic couple；Thermometric rack of measuring pressure TPR is used to measure the flue-gas temperature for entering the 4th preheating furnace chamber with negative pressure and including measurement support
And it is arranged at temperature thermocouple and load cell in each quirk；Low-temperature burning frame HR1, middle temperature burning rack HR2 and high temperature
Burning rack HR3 includes combustion supporter, switch board and the temperature thermocouple being arranged in each quirk and matched with quirk respectively
Fuel oil or combustion vapour pulse control valve；Zero-pressure frame ZPR includes zero-pressure support and the pressure sensor being arranged in each quirk, and makes
Pressure sensor is connected with high-temp combustion frame HR3 switch board；Air blast frame BR is used for the blow rate required for adjusting each quirk, and including drum
Wind support and the blast pipe connected with each quirk, the porch of each blast pipe is respectively equipped with frequency conversion fan；Cooling frame CR is used to adjust
The cooling air quantity of each quirk, and the cooling duct connected including cooling holder and with each quirk are saved, each cooling duct is provided with
Constant speed blower fan and regulating valve.
The present invention, which is provided, additionally provides a kind of production roasting system progress carbon anode production using carbon anode used for aluminium electrolysis
The process control method of roasting, including preroast process and circulation two processes of calcining process：
Preroast process includes：
First, load green anode blank in all hoppers of each furnace chamber, using inserts blind and cover green anode
Blank；
2nd, set up respectively smoke discharge frame ER in flame control unit, thermometric rack of measuring pressure TPR, low-temperature burning frame HR1, in
Warm burning rack HR2, high-temp combustion frame HR3, zero-pressure frame ZPR, air blast frame BR and cooling frame CR, and connect corresponding observing and controlling portion
Part；
3rd, it is pre- by inserting push-pull valve cut-out the 4th in a flame controlling cycle for every set flame control unit
Each quirk path between hot furnace chamber and sealing furnace chamber, and make to make block furnace chamber to each bar of fire between the 4th preheating furnace chamber from prepackage
Road is connected；Air is sent into by each quirk by air blast frame BR；By the controllable pulse valve on high-temp combustion frame HR3 into each quirk
The fuel oil or combustion gas for spraying into requirement arrive setting value so that the gas flow temperature of quirk at this to be lifted, to heat high-temperature roasting furnace
Room, waste heat flows to heating furnace room；The combustion of requirement is sprayed into each quirk by the controllable pulse valve on middle temperature burning rack HR2
Oil or combustion gas by the gas flow temperature lifting of quirk at this to arrive setting value, and to heat medium temperature roast furnace chamber, waste heat flows to low temperature
It is calcined furnace chamber；Sprayed into by the controllable pulse valve on low-temperature burning frame HR1 into each quirk requirement fuel oil or combustion gas with
Setting value is arrived into the gas flow temperature lifting of quirk at this, to heat low-temperature bake furnace chamber, it is pre- that waste heat flows to the first preheating successively
Hot furnace chamber, the second preheating furnace chamber, the 3rd preheating furnace chamber and the 4th preheating furnace chamber are simultaneously discharged at smoke discharge frame ER；And surveyed by thermometric
Pressure rack TPR measurements enter the gas flow temperature and negative pressure value of the 4th preheating each quirk of furnace chamber, in order to adjust each fire at smoke discharge frame ER
The flue gas delivery flow in road；The air-flow pressure force value of each quirk in high-temperature roasting furnace chamber upstream is accurately measured by zero-pressure frame ZPR, so as to
The air mass flow of each quirk of feeding at air blast frame BR is adjusted, the stream pressure of each quirk in high-temperature roasting furnace chamber upstream is controlled；
4th, after a flame controlling cycle terminates, by lifting beam device by the smoke discharge frame ER in flame control unit, survey
Warm rack of measuring pressure TPR, low-temperature burning frame HR1, middle temperature burning rack HR2, high-temp combustion frame HR3, zero-pressure frame ZPR, air blast frame BR and cold
But frame CR is along flame moving direction one furnace chamber of downward downstream, while the position of movable flashboard valve, and pass through cooling frame CR
The cooling air quantity of each quirk at this is adjusted, so that each furnace chamber to its upstream and downstream is cooled down；Often set flame control unit is downward
Trip is moved and enters roasting technique when going out ripe piece of furnace chamber and being moved to the corresponding position of high-temperature roasting furnace chamber of original state successively
Circulate the production cycle；
Circulation calcining process includes：
5th, it is pre- by inserting push-pull valve cut-out the 4th in a flame controlling cycle for every set flame control unit
Each quirk path between hot furnace chamber and sealing furnace chamber；By air blast frame BR by air from sending into each quirk；Pass through high-temp combustion
Controllable pulse valve on frame HR3 sprayed into each quirk requirement fuel oil or combustion gas so that the gas flow temperature of quirk at this to be carried
Setting value is raised to, to heat high-temperature roasting furnace chamber, waste heat flows to heating furnace room；Pass through the controllable arteries and veins on middle temperature burning rack HR2
Rush valve sprayed into each quirk requirement fuel oil or combustion gas with by this quirk gas flow temperature lifting arrive setting value, so as to
Medium temperature roast furnace chamber is heated, waste heat flows to low-temperature bake furnace chamber；By the controllable pulse valve on low-temperature burning frame HR1 to each quirk
The middle fuel oil for spraying into requirement or combustion gas by the gas flow temperature lifting of quirk at this to arrive setting value, to heat low-temperature bake
Furnace chamber, waste heat flow to successively the first preheating preheating furnace chamber, second preheating furnace chamber, the 3rd preheating furnace chamber and the 4th preheating furnace chamber and from
Discharged at smoke discharge frame ER；And the gas flow temperature and negative pressure for entering the 4th preheating each quirk of furnace chamber are measured by thermometric rack of measuring pressure TPR
Value, in order to adjust the flue gas delivery flow of each quirk at smoke discharge frame ER；High-temperature roasting furnace chamber is accurately measured by zero-pressure frame ZPR
The air-flow pressure force value of each quirk in upstream, in order to adjust the air mass flow that each quirk is sent at air blast frame BR；Pass through cooling frame CR
The cooling air quantity of each quirk at this is adjusted, so that each furnace chamber to its upstream and downstream is cooled down；
6th, after a flame controlling cycle terminates, by lifting beam device by the smoke discharge frame ER in flame control unit, survey
Warm rack of measuring pressure TPR, low-temperature burning frame HR1, middle temperature burning rack HR2, high-temp combustion frame HR3, zero-pressure frame ZPR, air blast frame BR and cold
But frame CR is along flame moving direction one furnace chamber of downward downstream, while the position of movable flashboard valve；And ripe piece of furnace chamber will be gone out
Ripe anode in each hopper is come out of the stove, and in each hopper that green anode blank is fitted into the raw block furnace chamber of prepackage, uses inserts filling irrigating sealant
Gap simultaneously covers green anode blank；
7th, according to the control mode circular flow of step 5 and step 6.
As prioritization scheme, a kind of production roasting system using carbon anode used for aluminium electrolysis of the present invention carries out carbon anode production
The process control method of roasting, wherein, during preroast process and circulation calcining process, make the branch pipe cigarette in smoke discharge frame ER
The temperature control of gas is at 420 DEG C~480 DEG C；Make zero-pressure frame ZPR control the stream pressure of each quirk in high-temperature roasting furnace chamber upstream for-
4~0pa.A kind of production roasting system using carbon anode used for aluminium electrolysis of the present invention carries out the technology controlling and process of carbon anode production roasting
Method, with production efficiency it is high, easy to operate, it is safe and reliable the characteristics of, productivity ratio more than 15% can be effectively improved, and reduce combustion
Material consumption 10~25%, and the pressure of smoke evacuation subsequent purification processing system can be slowed down, the probability of fire occurs for reduction, improves safety
Property.
Shown embodiment is to a kind of production roasting system of carbon anode used for aluminium electrolysis of the present invention below in conjunction with the accompanying drawings
And its process control method is described in further detail：
Brief description of the drawings
Fig. 1 produces the structural representation of roasting system for the carbon anode of 54 furnace chamber, 3 sets of flame control units in the prior art；
Fig. 2 covers the schematic diagram of the process control procedure of flame control unit for list in the prior art；
Fig. 3 is the partial schematic diagram of the roasting furnace chamber produced for carbon anode；
Fig. 4 produces the structural representation of roasting system for the carbon anode of 60 furnace chamber, 3 sets of flame control units of the present invention；
Fig. 5 is the schematic diagram of the process control procedure of the first embodiment list set flame control unit of the invention；
Fig. 6 produces the structural representation of roasting system for the carbon anode of 66 furnace chamber, 3 sets of flame control units of the present invention；
Fig. 7 is the schematic diagram for the process control procedure that second of embodiment list of the invention covers flame control unit.
Embodiment
Firstly the need of explanation, the present invention had both disclosed the production roasting system of carbon anode used for aluminium electrolysis, also disclosed that
The process control method of the production roasting of carbon anode is carried out using the production roasting system of carbon anode used for aluminium electrolysis.And it is wherein described
Air-flow, flue gas should make same concept understanding, refer both to the mixed gas flowed in fire tube.
As shown in Figures 3 to 5 a kind of carbon anode used for aluminium electrolysis of the invention production roasting system the first embodiment,
Including the circulating roaster unit being made up of 60 furnace chambers 1,3 sets of flame control units, Yi Jiyong being made up of various control frame
The lifting beam device of control cage in movable flame control unit, allows each furnace chamber 1 to include the multiple open hoppers being arranged side by side
101, the quirk 102 of closing is respectively provided with the both sides of each hopper 101 and makes only to set one between two adjacent hoppers 101
Bar quirk 102, is respectively provided with four uniform combustion measurement holes, makes burning along its length on the upper side wall of every quirk 102
Measured hole connects the inner chamber of quirk 102 and provided with covering, and partition wall 103 is provided between two adjacent furnace chambers 1 and makes adjacent furnace chamber 1
Corresponding quirk 102 be interconnected through partition wall 103, being provided with partition wall 103 is used to cutting off or opening right between adjacent furnace chamber 1
Answer the push-pull valve 104 of quirk 102；Every set flame control unit is set to include smoke discharge frame ER, thermometric rack of measuring pressure TPR, low-temperature burning
Frame HR1, middle temperature burning rack HR2, high-temp combustion frame HR3, zero-pressure frame ZPR, air blast frame BR and cooling frame CR；
Wherein, often set flame control unit controls 20 furnace chambers 1 and in each flame control in a flame controlling cycle
A furnace chamber is moved forward after end cycle processed；20 furnace chambers 1 are followed successively by prepackage life along flame moving direction from upstream to downstream
Block furnace chamber 11, go out the pre- cooling cooling furnace chamber of furnace chamber 14, first of coming out of the stove of the pre- cooling furnace chamber 13, second of coming out of the stove of ripe piece of furnace chamber 12, first
15th, the second cooling cooling cooling cooling cooling furnace chamber of furnace chamber the 19, the 6th of furnace chamber the 18, the 5th of furnace chamber the 17, the 4th of furnace chamber the 16, the 3rd
20th, the 7th cooling furnace chamber 21, high-temperature roasting furnace chamber 22, heating furnace chamber 23, medium temperature roast furnace chamber 24, low-temperature bake furnace chamber 25, the
One preheating preheating furnace chamber 26, second preheating furnace chamber the 27, the 3rd preheating furnace chamber the 28, the 4th preheating furnace chamber 29 and sealing furnace chamber 30；
Smoke discharge frame ER is erected at the upside of the 4th preheating furnace chamber 29 and in downstream, and thermometric rack of measuring pressure TPR is erected at the 3rd preheating
The upside of furnace chamber 28 and in downstream, is erected at low-temperature burning frame HR1 the upper middle side part of the 3rd roasting furnace chamber 25, middle temperature
Burning rack HR2 is erected at the upper middle side part of the second roast furnace chamber 24, and high-temp combustion frame HR3 is erected at the first roasting furnace chamber 22
Zero-pressure frame ZPR, is erected at the upside of the 7th cooling furnace chamber 17 and in downstream by upper middle side part, and air blast frame BR is erected at the
The upper middle side part of four cooling furnace chambers 18, is erected at cooling frame CR the upper middle side part of the first cooling furnace chamber 15.
The present invention is by above structure setting, compared with existing carbon anode production roasting system, in low-temperature bake furnace chamber
25 downstream adds a preheating furnace chamber, and adds one between high-temperature roasting furnace chamber 22 and medium temperature roast furnace chamber 24 and rise
Warm furnace chamber 23, makes preheating zone furnace chamber and roast area furnace chamber be changed into four by three.Single set flame control of this structure type
Unit, due to the extension the distance between from temperature highest high-temp combustion frame HR3 to smoke discharge frame ER, on the one hand can make full use of remaining
Heat is to reduce energy consumption, and practical application shows, fuel consumption 10~25% can be reduced using the present invention.Simultaneously because can apart from extension
Slow down the programming rate of each furnace chamber between the two, it is to avoid the phenomenon of crackle occurs in finished product, so as to improve yield rate and production
Quality.On the other hand, the time of flame controlling cycle can correspondingly be shortened, so that production efficiency is improved, using present invention knot
The production roasting system of the carbon anode used for aluminium electrolysis of configuration formula, can be such that the time of flame controlling cycle shorten to 24 hours, improve
Production efficiency more than 15%.In addition, the production roasting system of the carbon anode used for aluminium electrolysis using the present invention, can make smoke discharge frame ER's
The temperature control of branch pipe flue gas is at 420 DEG C~480 DEG C or so, compared to 550 DEG C of drops of traditional carbon anode production roasting system
It is low 70 DEG C~130 DEG C, the pressure of subsequent purification processing system is slow down, while improving security, generation fire is reduced
Probability.
As shown in Figure 6 and Figure 7 a kind of carbon anode used for aluminium electrolysis of the invention production roasting system second of embodiment,
Including the circulating roaster unit being made up of 66 furnace chambers 1,3 sets of flame control units, Yi Jiyong being made up of various control frame
The lifting beam device of control cage in movable flame control unit, allows each furnace chamber 1 to include the multiple open hoppers being arranged side by side
101, the quirk 102 of closing is respectively provided with the both sides of each hopper 101 and makes only to set one between two adjacent hoppers 101
Bar quirk 102, is respectively provided with four uniform combustion measurement holes, makes burning along its length on the upper side wall of every quirk 102
Measured hole connects the inner chamber of quirk 102 and provided with covering, and partition wall 103 is provided between two adjacent furnace chambers 1 and makes adjacent furnace chamber 1
Corresponding quirk 102 be interconnected through partition wall 103, being provided with partition wall 103 is used to cutting off or opening right between adjacent furnace chamber 1
Answer the push-pull valve 104 of quirk 102；Every set flame control unit is set to include smoke discharge frame ER, thermometric rack of measuring pressure TPR, low-temperature burning
Frame HR1, middle temperature burning rack HR2, high-temp combustion frame HR3, zero-pressure frame ZPR, air blast frame BR and cooling frame CR；
Wherein, often set flame control unit controls 22 furnace chambers 1 and in each flame control in a flame controlling cycle
A furnace chamber is moved forward after end cycle processed；22 furnace chambers 1 are followed successively by prepackage life along flame moving direction from upstream to downstream
Block furnace chamber 11 ', go out ripe piece of furnace chamber 12 ', the first pre- cooling furnace chamber 13 ' of coming out of the stove, the second pre- cooling furnace chamber 14 ' of coming out of the stove, the first cooling
Furnace chamber 15 ', the second cooling furnace chamber 16 ', the 3rd cooling furnace chamber 17 ', the 4th cooling furnace chamber 18 ', the 5th cooling furnace chamber 19 ', the 6th
Cool down furnace chamber 20 ', the 7th cooling furnace chamber 21 ', the 8th cooling furnace chamber 31 ', the 9th cooling furnace chamber 32 ', high-temperature roasting furnace chamber 22 ',
Heat up furnace chamber 23 ', medium temperature roast furnace chamber 24 ', the preheating preheating of low-temperature bake furnace chamber 25 ', first furnace chamber 26 ', the second preheating furnace chamber
27 ', the 3rd preheating furnace chamber 28 ', the 4th preheating furnace chamber 29 ' and sealing furnace chamber 30 '；Smoke discharge frame ER is erected at the 4th preheating furnace chamber
Thermometric rack of measuring pressure TPR, is erected at the upside of the 3rd preheating furnace chamber 28 ' and is in downstream by 29 ' upside and in downstream,
Low-temperature burning frame HR1 is erected at the upper middle side part of the 3rd roasting furnace chamber 25 ', middle temperature burning rack HR2 is erected at the second roast
The upper middle side part of furnace chamber 24 ', is erected at high-temp combustion frame HR3 the upper middle side part of the first roasting furnace chamber 22 ', zero-pressure frame ZPR
It is erected at the upside of the 9th cooling furnace chamber 32 ' and in downstream, air blast frame BR is erected at the upside of the 5th cooling furnace chamber 19 '
Middle part, is erected at cooling frame CR the upper middle side part of the first cooling furnace chamber 15 '.
Compared with the first embodiment, second of embodiment has increased two furnace chambers in cooling zone and made at two furnace chambers
In air blast frame BR both sides.This structure makes the furnace chamber between air blast frame BR and high-temp combustion frame HR3 fully to heat by wind
Air themperature in machine feeding quirk, makes burning more abundant, further increases utilization rate of waste heat, reduce energy consumption.
It should be noted that smoke discharge frame ER, thermometric rack of measuring pressure TPR, low-temperature burning frame in two kinds of embodiments of the invention
HR1, middle temperature burning rack HR2, high-temp combustion frame HR3, zero-pressure frame ZPR, air blast frame BR and cooling frame CR configuration and act on
Existing carbon anode roasting system it is identical, wherein, smoke discharge frame ER is used to control the flue gas flow and temperature of each quirk 102, and wraps
Include a plurality of smoke evacuation branch pipe that smoke evacuation support, smoke evacuation house steward and two ends are connected with smoke evacuation house steward and each quirk 102 respectively, each bar row
Flue gas flow regulating valve is mounted on cigarette pipe, smoke discharge frame control section is provided with negative pressure transmitter and temperature thermocouple；Thermometric
Rack of measuring pressure TPR is used to measure the flue-gas temperature and negative pressure that enter the 4th preheating furnace chamber 29,29 ' and including measurement support and setting
Temperature thermocouple and load cell in each quirk 102；Low-temperature burning frame HR1, middle temperature burning rack HR2 and high-temp combustion frame
HR3 includes combustion supporter, switch board and the temperature thermocouple being arranged in each quirk 102 and the combustion matched with quirk respectively
Oil or combustion vapour pulse control valve；Zero-pressure frame ZPR includes zero-pressure support and the pressure sensor being arranged in each quirk 102, and makes
Pressure sensor is connected with high-temp combustion frame HR3 switch board；Air blast frame BR is used for the blow rate required for adjusting each quirk 102, and wraps
Air blast support and the blast pipe connected with each quirk 102 are included, the porch of each blast pipe is respectively equipped with frequency conversion fan；Cooling frame CR
Cooling air quantity for adjusting each quirk 102, and the cooling duct connected including cooling holder and with each quirk 102, it is each cold
But airduct is provided with constant speed blower fan and regulating valve.It should also be noted that the production roasting system of carbon anode used for aluminium electrolysis
The hopper and quirk quantity that furnace chamber setting quantity and each furnace chamber include should be set according to specific design production capacity, but often cover flame
Two kinds of embodiments that the furnace chamber quantity that control unit is used in a flame controlling cycle should be provided according to the present invention are set
For 20 or 22, control to require to meet the roasting technique of the present invention.
The technique that production roasting system disclosed by the invention using carbon anode used for aluminium electrolysis carries out carbon anode production roasting
Control method, specifically includes preroast process and circulation two processes of calcining process：
Preroast process includes：
First, load green anode blank in all hoppers 101 of each furnace chamber, using inserts blind and cover raw sun
Pole blank；
2nd, set up respectively smoke discharge frame ER in flame control unit, thermometric rack of measuring pressure TPR, low-temperature burning frame HR1, in
Warm burning rack HR2, high-temp combustion frame HR3, zero-pressure frame ZPR, air blast frame BR and cooling frame CR, and connect corresponding observing and controlling portion
Part；
3rd, for every set flame control unit, in a flame controlling cycle, by inserting the cut-out of push-pull valve 104 the
The path of each quirk 102 between four preheating furnace chambers 29,29 ' and sealing furnace chamber 30,30 ', and make from the raw block furnace chamber 11,11 ' of prepackage
Each article of quirk connection to the 4th preheating furnace chamber 29,29 '；Air is sent into by each quirk 102 by air blast frame BR；Pass through height
Controllable pulse valve on warm burning rack HR3 sprayed into each quirk 102 requirement fuel oil or combustion gas with by quirk at this 102
Gas flow temperature lifting arrive setting value, to heat high-temperature roasting furnace chamber 22,22 ', waste heat flows to heating furnace room 23,23 '；Pass through
Controllable pulse valve on middle temperature burning rack HR2 sprayed into each quirk 102 requirement fuel oil or combustion gas with by quirk at this
Setting value is arrived in 102 gas flow temperature lifting, to heat medium temperature roast furnace chamber 24,24 ', waste heat flow to low-temperature bake furnace chamber 25,
25’；Sprayed into by the controllable pulse valve on low-temperature burning frame HR1 into each quirk 102 requirement fuel oil or combustion gas to incite somebody to action
Setting value is arrived in gas flow temperature lifting of quirk 102 at this, and to heat low-temperature bake furnace chamber 25,25 ', waste heat flows to first successively
The preheating preheating preheating preheating preheating furnace chamber 29,29 ' of furnace chamber the 28,28 ' and the 4th of furnace chamber the 27,27 ', the 3rd of furnace chamber 26,26 ', second
And discharged at smoke discharge frame ER；And the gas into the 4th preheating furnace chamber 29,29 ' each quirks 102 is measured by thermometric rack of measuring pressure TPR
Temperature and negative pressure value are flowed, in order to adjust the flue gas delivery flow of each quirk 102 at smoke discharge frame ER；It is accurate by zero-pressure frame ZPR
High-temperature roasting furnace chamber 22, the air-flow pressure force value of each quirk 102 in 22 ' upstreams are measured, each quirk is sent at air blast frame BR to adjust
102 air mass flow, control high-temperature roasting furnace chamber 22, the stream pressure of each quirk 102 in 22 ' upstreams；
4th, after a flame controlling cycle terminates, by lifting beam device by the smoke discharge frame ER in flame control unit, survey
Warm rack of measuring pressure TPR, low-temperature burning frame HR1, middle temperature burning rack HR2, high-temp combustion frame HR3, zero-pressure frame ZPR, air blast frame BR and cold
But frame CR is along flame moving direction one furnace chamber of downward downstream, while the position of movable flashboard valve 104, and pass through cooling frame
CR adjusts the cooling air quantity of each quirk 102 at this, so that each furnace chamber to its upstream and downstream is cooled down；Often the control of set flame is single
Member downstream move successively and when go out ripe piece of furnace chamber 12,12 ' be moved to original state high-temperature roasting furnace chamber 22,22 ' it is corresponding
Enter roasting technique during position and circulate the production cycle；
Circulation calcining process includes：
5th, for every set flame control unit, in a flame controlling cycle, by inserting the cut-out of push-pull valve 104 the
The path of each quirk 102 between four preheating furnace chambers 29,29 ' and sealing furnace chamber 30,30 '；By air blast frame BR by air from feeding
Each quirk 102；Fuel oil or the combustion of requirement are sprayed into each quirk 102 by the controllable pulse valve on high-temp combustion frame HR3
Gas by the lifting of the gas flow temperature of quirk at this 102 to arrive setting value, to heat high-temperature roasting furnace chamber 22,22 ', waste heat flow direction
Heat up furnace chamber 23,23 '；The fuel oil of requirement is sprayed into each quirk 102 by the controllable pulse valve on middle temperature burning rack HR2
Or combustion gas by the lifting of the gas flow temperature of quirk at this 102 to arrive setting value, to heat medium temperature roast furnace chamber 24,24 ', residual heat stream
To low-temperature bake furnace chamber 25,25 '；Requirement is sprayed into each quirk 102 by the controllable pulse valve on low-temperature burning frame HR1
Fuel oil or combustion gas with by the gas flow temperature of quirk at this 102 lifting arrive setting value, to heat low-temperature bake furnace chamber 25,25 ',
Waste heat flows to the first preheating preheating preheating of furnace chamber 26,26 ', second furnace chamber 27, the 27 ', the 3rd preheating furnace chamber 28,28 ' and the successively
Four preheating furnace chambers 29,29 ' are simultaneously discharged at smoke discharge frame ER；And by thermometric rack of measuring pressure TPR measurement enter the 4th preheating furnace chamber 29,
The gas flow temperature and negative pressure value of 29 ' each quirks 102, in order to adjust the flue gas delivery flow of each quirk 102 at smoke discharge frame ER；It is logical
Zero passage pressure rack ZPR accurately measures high-temperature roasting furnace chamber 22, the air-flow pressure force value of each quirk 102 in 22 ' upstreams, in order to adjust air blast
The air mass flow of each quirk 102 is sent at frame BR；The cooling air quantity of each quirk 102 at this is adjusted by cooling frame CR, so as to right
Each furnace chamber of its upstream and downstream is cooled down；
6th, after a flame controlling cycle terminates, by lifting beam device by the smoke discharge frame ER in flame control unit, survey
Warm rack of measuring pressure TPR, low-temperature burning frame HR1, middle temperature burning rack HR2, high-temp combustion frame HR3, zero-pressure frame ZPR, air blast frame BR and cold
But frame CR is along flame moving direction one furnace chamber of downward downstream, while the position of movable flashboard valve；And ripe piece of furnace chamber will be gone out
12nd, the ripe anode in 12 ' each hoppers 101 is come out of the stove, and green anode blank is loaded to each hopper 101 of the raw block furnace chamber 11,11 ' of prepackage
In, using inserts blind and cover green anode blank；
7th, according to the control mode circular flow of step 5 and step 6.
In actual production roasting process, the smoke discharge frame ER temperature control of branch pipe flue gas should be made at 420 DEG C~480 DEG C；And
Zero-pressure frame ZPR is set to control the stream pressure of each quirk 102 of high-temperature roasting furnace chamber 22,22 ' upstreams between -4~0pa.
Using the production roasting system and its process control method of the carbon anode used for aluminium electrolysis of the present invention, with following beneficial
Effect：1) system waste heat can be made full use of；2) the flame controlling cycle of heating curve is minimum can control by 24 hours, can be significantly
Production efficiency is improved, practical application shows, compared to traditional carbon anode roasting system production efficiency can be made to improve more than 15%；
3) fuel consumption can be effectively reduced, energy-conservation purpose is realized, practical application shows, compared to traditional carbon anode roasting system unit
Production capacity can reduce fuel consumption 10~25%；4) it is simple to operate, it need not change too compared to traditional carbon anode roasting system
Many hardware working conditions, put into operation and management difficulty is small；5) finished product can be prevented effectively from and the phenomenon of crackle occurs, so as to improve product
Quality and yield rate；6) smoke discharge frame ER flue gases control temperature reduces 70 DEG C~130 compared to traditional carbon anode roasting system
DEG C, the pressure of flue gas subsequent purification processing system can be effectively reduced, and reduce the possibility of fire incident generation.
Above example is only the description carried out to the preferred embodiment for the present invention, and scope not is claimed to the present invention
The restriction of progress, on the premise of design spirit of the present invention is not departed from, technology of this area engineers and technicians according to the present invention
In the various forms of deformations that scheme is made, the protection domain that claims of the present invention determination all should be fallen into.
Claims (5)
1. a kind of production roasting system of carbon anode used for aluminium electrolysis, including be made up of multiple furnace chambers (1) circulating roaster unit,
At least a set of flame control unit being made up of various control frame and the hanging beam for control cage in movable flame control unit
Device, each furnace chamber (1) includes the multiple open hoppers (101) being arranged side by side, and the both sides of each hopper (101) are all provided with
There is the quirk (102) of closing and make only to set a quirk (102), every quirk (102) between two adjacent hoppers (101)
Upper side wall on be equipped with four uniform combustion measurement holes along its length, the inner chamber of combustion measurement hole connection quirk (102)
And provided with covering, partition wall (103) is provided between two adjacent furnace chambers (1) and the corresponding quirk (102) of adjacent furnace chamber (1) is worn
Cross partition wall (103) to be interconnected, being provided with partition wall (103) is used to cutting off or opening correspondence quirk (102) between adjacent furnace chamber (1)
Push-pull valve (104)；Often set flame control unit includes smoke discharge frame ER, thermometric rack of measuring pressure TPR, low-temperature burning frame HR1, middle temperature
Burning rack HR2, high-temp combustion frame HR3, zero-pressure frame ZPR, air blast frame BR and cooling frame CR；
It is characterized in that：Often set flame control unit controls 20 furnace chambers (1) and in each fire in a flame controlling cycle
Flame controlling cycle moves forward a furnace chamber after terminating；20 furnace chambers (1) along flame moving direction from upstream to downstream according to
It is secondary to cool down furnace chamber (13), the second pre- cooling furnace chamber of coming out of the stove to pre-install raw block furnace chamber (11), going out ripe piece of furnace chamber (12), the first pre- come out of the stove
(14), the first cooling furnace chamber (15), the second cooling furnace chamber (16), the 3rd cooling furnace chamber (17), the 4th cooling furnace chamber (18), the 5th
Cool down furnace chamber (19), the 6th cooling furnace chamber (20), the 7th cooling furnace chamber (21), high-temperature roasting furnace chamber (22), heating furnace chamber (23),
Medium temperature roast furnace chamber (24), low-temperature bake furnace chamber (25), the first preheating preheating furnace chamber (26), the second preheating furnace chamber (27), the 3rd
Preheat furnace chamber (28), the 4th preheating furnace chamber (29) and sealing furnace chamber (30)；The smoke discharge frame ER is erected at the 4th preheating furnace chamber
(29) upside and in downstream, thermometric rack of measuring pressure TPR is erected at the upside of the 3rd preheating furnace chamber (28) and in downstream,
Low-temperature burning frame HR1 is erected at the upper middle side part of the 3rd roasting furnace chamber (25), and middle temperature burning rack HR2 is erected at the second roast furnace chamber
(24) upper middle side part, high-temp combustion frame HR3 is erected at the upper middle side part of the first roasting furnace chamber (22), and zero-pressure frame ZPR is erected at
7th cools down the upside of furnace chamber (17) and in downstream, and air blast frame BR is erected at the upper middle side part of the 4th cooling furnace chamber (18),
Cooling frame CR is erected at the upper middle side part of the first cooling furnace chamber (15).
2. a kind of production roasting system of carbon anode used for aluminium electrolysis, including be made up of multiple furnace chambers (1) circulating roaster unit,
At least a set of flame control unit being made up of various control frame and the hanging beam for control cage in movable flame control unit
Device, each furnace chamber (1) includes the multiple open hoppers (101) being arranged side by side, and the both sides of each hopper (101) are all provided with
There is the quirk (102) of closing and make only to set a quirk (102), every quirk (102) between two adjacent hoppers (101)
Upper side wall on be equipped with four uniform combustion measurement holes along its length, the inner chamber of combustion measurement hole connection quirk (102)
And provided with covering, partition wall (103) is provided between two adjacent furnace chambers (1) and the corresponding quirk (102) of adjacent furnace chamber (1) is worn
Cross partition wall (103) to be interconnected, being provided with partition wall (103) is used to cutting off or opening correspondence quirk (102) between adjacent furnace chamber (1)
Push-pull valve (104)；Often set flame control unit includes smoke discharge frame ER, thermometric rack of measuring pressure TPR, low-temperature burning frame HR1, middle temperature
Burning rack HR2, high-temp combustion frame HR3, zero-pressure frame ZPR, air blast frame BR and cooling frame CR；
It is characterized in that：Often set flame control unit controls 22 furnace chambers (1) and in each fire in a flame controlling cycle
Flame controlling cycle moves forward a furnace chamber after terminating；22 furnace chambers (1) along flame moving direction from upstream to downstream according to
It is secondary to cool down furnace chamber (13 '), the second pre- cooling of coming out of the stove to pre-install raw block furnace chamber (11 '), going out ripe piece of furnace chamber (12 '), the first pre- come out of the stove
Furnace chamber (14 '), the first cooling furnace chamber (15 '), the second cooling furnace chamber (16 '), the 3rd cooling furnace chamber (17 '), the 4th cooling furnace chamber
(18 '), the 5th cooling furnace chamber (19 '), the 6th cooling furnace chamber (20 '), the 7th cooling furnace chamber (21 '), the 8th cooling furnace chamber
It is (31 '), the 9th cooling furnace chamber (32 '), high-temperature roasting furnace chamber (22 '), heating furnace chamber (23 '), medium temperature roast furnace chamber (24 '), low
Temperature roasting furnace chamber (25 '), the first preheating preheating furnace chamber (26 '), the second preheating furnace chamber (27 '), the 3rd preheating furnace chamber (28 '), the
Four preheating furnace chambers (29 ') and sealing furnace chamber (30 ')；The smoke discharge frame ER is erected at the upside and place of the 4th preheating furnace chamber (29 ')
In downstream, thermometric rack of measuring pressure TPR is erected at the upside of the 3rd preheating furnace chamber (28 ') and in downstream, low-temperature burning frame HR1
The upper middle side part of the 3rd roasting furnace chamber (25 ') is erected at, middle temperature burning rack HR2 is erected at the upside of the second roast furnace chamber (24 ')
Middle part, high-temp combustion frame HR3 is erected at the upper middle side part of the first roasting furnace chamber (22 '), and zero-pressure frame ZPR is erected at the 9th cooling furnace
The upside of room (32 ') and in downstream, air blast frame BR is erected at the upper middle side part of the 5th cooling furnace chamber (19 '), cooling frame CR
It is erected at the upper middle side part of the first cooling furnace chamber (15 ').
3. according to a kind of production roasting system of carbon anode used for aluminium electrolysis described in claim 1 or 2, it is characterised in that：It is described
Smoke discharge frame ER is used for the flue gas flow and temperature for controlling each quirk (102), and including smoke evacuation support, smoke evacuation house steward and two ends point
Flue gas flow tune is mounted on a plurality of smoke evacuation branch pipe not connected with smoke evacuation house steward and each quirk (102), each bar smoke evacuation branch pipe
Valve is saved, smoke discharge frame control section is provided with negative pressure transmitter and temperature thermocouple；Thermometric rack of measuring pressure TPR is used to measure pre- into the 4th
The flue-gas temperature and negative pressure of hot furnace chamber (29,29 ') and the thermometric thermoelectricity including measuring support and being arranged in each quirk (102)
Even summation load cell；The low-temperature burning frame HR1, middle temperature burning rack HR2 and high-temp combustion frame HR3 include burning branch respectively
Frame, switch board and the temperature thermocouple being arranged in each quirk (102) and the fuel oil matched with quirk or combustion vapour pulse control
Valve processed；Zero-pressure frame ZPR includes zero-pressure support and the pressure sensor that is arranged in each quirk (102), and make pressure sensor with
High-temp combustion frame HR3 switch board connection；Air blast frame BR is used for the blow rate required for adjusting each quirk (102), and including air blast support
The blast pipe connected with each quirk (102), the porch of each blast pipe is respectively equipped with frequency conversion fan；Cooling frame CR is used to adjust
The cooling air quantity of each quirk (102), and the cooling duct connected including cooling holder and with each quirk (102), respectively cool down wind
Pipe is provided with constant speed blower fan and regulating valve.
4. a kind of production roasting system using carbon anode used for aluminium electrolysis described in claim 3 carries out the work of carbon anode production roasting
Skill control method, it is characterised in that including preroast process and circulation two processes of calcining process：
Preroast process includes：
First, load green anode blank in all hoppers (101) of each furnace chamber, using inserts blind and cover green anode
Blank；
2nd, smoke discharge frame ER, thermometric rack of measuring pressure TPR, low-temperature burning frame HR1, the middle Wen Ran in flame control unit have been set up respectively
Buck HR2, high-temp combustion frame HR3, zero-pressure frame ZPR, air blast frame BR and cooling frame CR, and connect corresponding observing and controlling part；
3rd, for every set flame control unit, in a flame controlling cycle, by inserting push-pull valve (104) cut-out the 4th
Each quirk (102) path between furnace chamber (29,29 ') and sealing furnace chamber (30,30 ') is preheated, and is made from the raw block furnace chamber of prepackage
(11,11 ') to each article of quirk between the 4th preheating furnace chamber (29,29 ') is connected；Air is sent into by each quirk by air blast frame BR
(102)；Fuel oil or the combustion gas of requirement are sprayed into each quirk (102) by the controllable pulse valve on high-temp combustion frame HR3
So that the lifting of the gas flow temperature of quirk at this (102) is arrived into setting value, to heat high-temperature roasting furnace chamber (22,22 '), waste heat flow direction
Heat up furnace chamber (23,23 ')；Requirement is sprayed into each quirk (102) by the controllable pulse valve on middle temperature burning rack HR2
Fuel oil or combustion gas so that the lifting of the gas flow temperature of quirk at this (102) is arrived into setting value, so as to heat medium temperature roast furnace chamber (24,
24 '), waste heat flows to low-temperature bake furnace chamber (25,25 ')；By the controllable pulse valve on low-temperature burning frame HR1 to each quirk
(102) fuel oil or combustion gas that requirement is sprayed into arrive setting value so that the gas flow temperature of quirk at this (102) to be lifted, to add
Hot low-temperature bake furnace chamber (25,25 '), waste heat flow to successively the first preheating preheating furnace chamber (26,26 '), second preheating furnace chamber (27,
27 '), the 3rd preheating furnace chamber (28,28 ') and the 4th preheating furnace chamber (29,29 ') and the discharge at smoke discharge frame ER；And pass through thermometric
Rack of measuring pressure TPR measurements enter the gas flow temperature and negative pressure value of the 4th preheating furnace chamber (29,29 ') each quirk (102), in order to adjust
The flue gas delivery flow of each quirk (102) at smoke discharge frame ER；High-temperature roasting furnace chamber (22,22 ') is accurately measured by zero-pressure frame ZPR
The air-flow pressure force value of each quirk in upstream (102), to adjust the air mass flow that each quirk (102) is sent at air blast frame BR, control
The stream pressure of the high-temperature roasting furnace chamber each quirk in (22,22 ') upstream (102)；
4th, after a flame controlling cycle terminates, the smoke discharge frame ER in flame control unit, thermometric are surveyed by lifting beam device
Pressure rack TPR, low-temperature burning frame HR1, middle temperature burning rack HR2, high-temp combustion frame HR3, zero-pressure frame ZPR, air blast frame BR and cooling frame
CR is along flame moving direction one furnace chamber of downward downstream, while the position of movable flashboard valve (104), and pass through cooling frame CR
The cooling air quantity of each quirk (102) at this is adjusted, so that each furnace chamber to its upstream and downstream is cooled down；Often the control of set flame is single
Member downstream move successively and when go out ripe piece of furnace chamber (12,12 ') be moved to original state high-temperature roasting furnace chamber (22,22 ') it is right
Enter roasting technique during the position answered and circulate the production cycle；
Circulation calcining process includes：
5th, for every set flame control unit, in a flame controlling cycle, by inserting push-pull valve (104) cut-out the 4th
Preheat each quirk (102) path between furnace chamber (29,29 ') and sealing furnace chamber (30,30 ')；By air blast frame BR by air from
Send into each quirk (102)；Requirement is sprayed into each quirk (102) by the controllable pulse valve on high-temp combustion frame HR3
Fuel oil or combustion gas so that the lifting of the gas flow temperature of quirk at this (102) is arrived into setting value, so as to heat high-temperature roasting furnace chamber (22,
22 '), waste heat flows to heating furnace room (23,23 ')；By the controllable pulse valve on middle temperature burning rack HR2 into each quirk (102)
The fuel oil or combustion gas for spraying into requirement arrive setting value so that the gas flow temperature of quirk at this (102) to be lifted, to heat middle temperature
Furnace chamber (24,24 ') is calcined, waste heat flows to low-temperature bake furnace chamber (25,25 ')；Pass through the controllable pulse valve on low-temperature burning frame HR1
The fuel oil or combustion gas that requirement is sprayed into each quirk (102) are set so that the lifting of the gas flow temperature of quirk at this (102) is arrived
Value, to heat low-temperature bake furnace chamber (25,25 '), waste heat flows to the first preheating preheating furnace chamber (26,26 '), the second preheating successively
Furnace chamber (27,27 '), the 3rd preheating furnace chamber (28,28 ') and the 4th preheating furnace chamber (29,29 ') are simultaneously discharged at smoke discharge frame ER；And
The gas flow temperature and negative pressure value for entering the 4th preheating furnace chamber (29,29 ') each quirk (102) are measured by thermometric rack of measuring pressure TPR, with
It is easy to adjust the flue gas delivery flow of each quirk (102) at smoke discharge frame ER；High-temperature roasting furnace chamber is accurately measured by zero-pressure frame ZPR
The air-flow pressure force value of each quirk in (22,22 ') upstream (102), in order to adjust the air that each quirk (102) is sent at air blast frame BR
Flow；The cooling air quantity of each quirk (102) at this is adjusted by cooling frame CR, it is cold to be carried out to each furnace chamber of its upstream and downstream
But；
6th, after a flame controlling cycle terminates, the smoke discharge frame ER in flame control unit, thermometric are surveyed by lifting beam device
Pressure rack TPR, low-temperature burning frame HR1, middle temperature burning rack HR2, high-temp combustion frame HR3, zero-pressure frame ZPR, air blast frame BR and cooling frame
CR is along flame moving direction one furnace chamber of downward downstream, while the position of movable flashboard valve；And will go out ripe piece of furnace chamber (12,
12 ') the ripe anode in each hopper (101) is come out of the stove, and green anode blank is loaded to each hopper of the raw block furnace chamber (11,11 ') of prepackage
(101) in, using inserts blind and green anode blank is covered；
7th, according to the control mode circular flow of step 5 and step 6.
5. according to a kind of production roasting system using carbon anode used for aluminium electrolysis described in claim 4 carbon anode production is carried out to roast
The process control method of burning, it is characterised in that：The temperature control of branch pipe flue gas in the smoke discharge frame ER is at 420 DEG C~480 DEG C；
The zero-pressure frame ZPR controls the stream pressure of the high-temperature roasting furnace chamber each quirk in (22,22 ') upstream (102) to be -4~0pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610093336.6A CN105546981B (en) | 2016-02-19 | 2016-02-19 | The production roasting system and its process control method of a kind of carbon anode used for aluminium electrolysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610093336.6A CN105546981B (en) | 2016-02-19 | 2016-02-19 | The production roasting system and its process control method of a kind of carbon anode used for aluminium electrolysis |
Publications (2)
| Publication Number | Publication Date |
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| CN105546981A CN105546981A (en) | 2016-05-04 |
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| CN108624916A (en) * | 2018-07-09 | 2018-10-09 | 茌平华信碳素有限公司 | A kind of preparation method of anode carbon block for aluminium electrolysis |
| CN111649595A (en) * | 2020-07-15 | 2020-09-11 | 洛阳万基炭素有限公司 | Annular smoke-discharging automatic fire extinguishing device and method for prebaked anode furnace chamber |
| CN111902023B (en) * | 2020-07-28 | 2023-06-30 | 深圳市科信通信技术股份有限公司 | Cabinet air volume control system and control method |
| CN114396799B (en) * | 2022-01-17 | 2023-12-08 | 安徽省交通控股集团有限公司 | Self-adaptive control method of steam-curing kiln temperature sub-bin control equipment |
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