CN103868349A - Energy saving and emission reduction method of carbon anode baking furnace - Google Patents
Energy saving and emission reduction method of carbon anode baking furnace Download PDFInfo
- Publication number
- CN103868349A CN103868349A CN201410121018.7A CN201410121018A CN103868349A CN 103868349 A CN103868349 A CN 103868349A CN 201410121018 A CN201410121018 A CN 201410121018A CN 103868349 A CN103868349 A CN 103868349A
- Authority
- CN
- China
- Prior art keywords
- temperature
- furnace chamber
- furnace
- bell
- baking 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.)
- Granted
Links
Images
Landscapes
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Details (AREA)
Abstract
The invention provides an energy saving and emission reduction method of a carbon anode baking furnace, and relates to the field of metallurgical industry carbon techniques. A special furnace face sealing furnace cover is specially configured for the baking furnace, and the process of the baking furnace is optimized, namely the flame jetting length is 0.35 time of the flame path depth, the difference between temperature of products in a preheating furnace chamber and flame path smoke temperature is more than 280 DEG C, and a thermocouple is inserted into a second feed box of the preheating furnace chamber. According to the method, the sealing effect of the baking furnace is greatly improved, and cold air is effectively prevented from entering the baking furnace; meanwhile according to the practical experience of temperature distribution in the furnace chamber, the operation technique of the baking furnace is optimized, it is guaranteed that volatile matter fully burns and temperature on the upper portion of a flame path and temperature on the lower portion of the flame path are uniform, and energy consumption of the carbon anode baking furnace is greatly reduced.
Description
Technical field
The present invention relates to metallurgical industry charcoal element technical field, be specifically related to a kind of energy-saving and emission-reduction method of carbon anode roasting furnace.
Background technology
China is electrolyzing aluminum industry big producing country, and along with increasing substantially of electrolytic aluminium, the demand of antianode carbon piece also grows with each passing day, and in aluminum carbon anode production process, roaster is a very important equipment.Investment accounts for 40% of carbon anode plant investment, and it is invested and production cost is had the greatest impact founding the factory. and roasting technique energy consumption accounts for the more than 50% of carbon anode energy consumption.Because roaster is after 2-3 operation, the non-constant of sealing effectiveness, cold air enters burning quirk, has improved the consumption of fuel.At present energy consumption is all more than 85 cubes/ton, and volatile combustion is insufficient, need to after cleaning equipment, could outwards get rid of.The key of roaster technology is how to control and to utilize anode volatile matter to make its fully burning and optimization to burning time and burning position in stove, the volatile matter heat that in roasting process, green anode produces theoretically almost can meet the use of baked anode itself, but in reality, amount of heat has been taken away by furnace wall absorption and flue gas, how according to the actual conditions of roasting process, roaster technique to be optimized and to become urgent need to solve the problem in the industry.
Summary of the invention
The invention provides a kind of energy-saving and emission-reduction method of carbon anode roasting furnace, to solve, sealing that prior art exists is poor causes the problem that volatile combustion is insufficient, energy consumption is high.
The technical solution adopted for the present invention to solve the technical problems is:
An energy-saving and emission-reduction method for carbon anode roasting furnace, concrete grammar measure is as follows:
1) roaster sealing
1-1, first, we confirm bell length and width size according to the size of the each furnace chamber length and width of roaster, confirm bell height dimension, thereby obtain the size that bell length and width are high according to the temperature of the boiler face heat radiation of moving back stove high temperature furnace chamber;
1-2, make special boiler face Sealing furnace lid according to bell size, use some channel-section steels that screen cloth is fixed on bell framework, fire retardant is positioned on the fixed mount of bell base of frame, and be fixed by the depression bar of bell framework one side, between the fixation clip of bell base of frame and movable pressing board, fibrofelt is set, fibrofelt is fixed by the cam being arranged on the axle sleeve of bell base of frame;
1-3, special boiler face Sealing furnace cover in the each operational system method of operating of roaster:
1.3.1, after smoke discharge frame, pre-install and on furnace chamber, cover special furnace face sealing lid;
1.3.2, special boiler face sealing lid on preheating furnace chamber upper cover;
1.3.3, moving back special boiler face sealing lid on stove high temperature furnace chamber upper cover;
1.3.4, each special boiler face sealing lid is along with the system cycle of operation moves forward;
2) technological operation optimization
2-1, preheating furnace chamber programming rate is brought up to 12 ℃/h from 9 ℃/h; Preheating furnace chamber terminal temperature is brought up to 800 ℃ from 550 ℃, terminal temperature is preheating furnace chamber hole flue-gas temperature, make each preheating furnace chamber products temperature and quirk flue-gas temperature gap more than 280 ℃, guarantee in the time that volatile matter is discharged, more than fire path temperature reaches burning-point, volatile matter can be burnt cmpletely;
The spray penetration of 2-2, flame must reach 0.35 times of the quirk degree of depth, and the temperature up and down of guarantee quirk is even;
2-3, insert thermocouple at the 2nd hopper of each preheating furnace chamber respectively, control each preheating furnace chamber products temperature and fire path temperature gap more than 280 ℃, according to its adjustment negative pressure.
The key of roaster technology is how to control and to utilize anode volatile matter to make its fully burning and optimization to burning time and burning position in stove.In principle, the volatile matter heat that in roasting process, green anode produces almost can meet the use of baked anode itself, but has amount of heat to be taken away by furnace wall absorption and flue gas.The difficult point of roaster control is discharge and the burning (to the control of efflux time, position, eliminating amount) of volatile matter.In theory, green compact pitch thermal expansion when normal temperature-200 ℃, tension force reduces; 150 ℃--after 350 ℃ of pitches expand, redistribution, in space, infiltrates in petroleum coke particle; 350 ℃--the lightweight volatile matter of 450 ℃ of pitches discharges; 450 ℃--the volatile matter that 600 ℃ of eliminatings in a large number can not coking; 600 ℃--900 ℃ discharge heavy amount cracking volatile matter; 900 ℃--1050 ℃ of crystal reconfigure.Specifically 420 ℃ of a large amount of volatilizations of tar gas, 400 ℃ take fire.640 ℃ of a large amount of volatilizations of methane, 625 ℃ take fire.800 ℃ of a large amount of volatilizations of hydrogen, 567 ℃ take fire.
Compared with existing process, beneficial effect of the present invention is according to carbon anode roasting furnace working order, for roaster has configured special boiler face Sealing furnace lid, has greatly improved the sealing effectiveness of roaster specially, has effectively prevented that cold air from entering in roaster; According to the practical experience of furnace chamber Temperature Distribution, the operating procedure method of roaster is optimized simultaneously, has guaranteed that the abundant burning of fugitive constituent and the temperature up and down of quirk are even, greatly reduce the energy consumption of carbon anode roasting furnace.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of bell in the present invention;
Fig. 2 is the structural representation in A-A cross section in Fig. 1;
Fig. 3 is the enlarged diagram in C region in Fig. 2;
Fig. 4 is the process flow diagram of carbon anode roasting furnace.
1 channel-section steel, 2 screen clothes, 3 bell frameworks, 4 fire retardants, 5 fixed mounts, 6 depression bars, 7 fixation clips, 8 movable pressing boards, 9 fibrofelts, 10 axle sleeves, 11 cams in figure.
The specific embodiment
As shown in Figure 1, Figure 2, Figure 3 and Figure 4: a kind of energy-saving and emission-reduction method of carbon anode roasting furnace, concrete grammar measure is as follows:
1) roaster sealing
1-1, first, we confirm bell length and width size according to the size of the each furnace chamber length and width of roaster, confirm bell height dimension, thereby obtain the size that bell length and width are high according to the temperature of the boiler face heat radiation of moving back stove high temperature furnace chamber;
1-2, make special boiler face Sealing furnace lid according to bell size, use some channel-section steels 1 that screen cloth 2 is fixed on bell framework 3, fire retardant 4 is positioned on the fixed mount 5 of bell framework 3 bottoms, and be fixed by the depression bar 6 of bell framework 3 one sides, between the fixation clip 7 of bell framework 3 bottoms and movable pressing board 8, fibrofelt 9 is set, fibrofelt 9 is fixed by the cam 11 being arranged on the axle sleeve 10 of bell framework 3 bottoms;
1-3, special boiler face Sealing furnace cover in the each operational system method of operating of roaster:
1.3.1, after smoke discharge frame, pre-install 1 and prepackage cover special furnace face sealing lid on 2 furnace chambers;
1.3.2, on preheating furnace chamber 1P, 2P, 3P, cover special furnace face sealing lid;
1.3.3, cover special furnace face sealing lid moving back on stove high temperature furnace chamber C1, C2;
1.3.4, each special boiler face sealing lid is along with the system cycle of operation moves forward;
2) technological operation optimization
2-1, preheating furnace chamber 1P programming rate is brought up to 12 ℃/h from 9 ℃/h; Preheating furnace chamber 1P terminal temperature is brought up to 800 ℃ from 550 ℃, terminal temperature is preheating furnace chamber hole flue-gas temperature, make preheating furnace chamber 1P, 2P, 3P products temperature and quirk flue-gas temperature gap more than 280 ℃, guarantee in the time that volatile matter is discharged, more than fire path temperature reaches burning-point, volatile matter can be burnt cmpletely;
The spray penetration of 2-2, flame must reach 0.35 times of the quirk degree of depth, and the temperature up and down of guarantee quirk is even;
2-3, insert the long thermocouple of 1.5m at the 2nd hopper of each preheating furnace chamber respectively, control preheating furnace chamber 1P, 2P, 3P products temperature with fire path temperature gap more than 280 ℃, according to its adjustment negative pressure.
Claims (1)
1. an energy-saving and emission-reduction method for carbon anode roasting furnace, is characterized in that concrete grammar measure is as follows:
1) roaster sealing
1-1, first, we confirm bell length and width size according to the size of the each furnace chamber length and width of roaster, confirm bell height dimension, thereby obtain the size that bell length and width are high according to the temperature of the boiler face heat radiation of moving back stove high temperature furnace chamber;
1-2, make special boiler face Sealing furnace lid according to bell size, use some channel-section steels that screen cloth is fixed on bell framework, fire retardant is positioned on the fixed mount of bell base of frame, and be fixed by the depression bar of bell framework one side, between the fixation clip of bell base of frame and movable pressing board, fibrofelt is set, fibrofelt is fixed by the cam being arranged on the axle sleeve of bell base of frame;
1-3, special boiler face Sealing furnace cover in the each operational system method of operating of roaster:
1.3.1, after smoke discharge frame, pre-install and on furnace chamber, cover special furnace face sealing lid;
1.3.2, special boiler face sealing lid on preheating furnace chamber upper cover;
1.3.3, moving back special boiler face sealing lid on stove high temperature furnace chamber upper cover;
1.3.4, each special boiler face sealing lid is along with the system cycle of operation moves forward;
2) technological operation optimization
2-1, preheating furnace chamber programming rate is brought up to 12 ℃/h from 9 ℃/h; Preheating furnace chamber terminal temperature is brought up to 800 ℃ from 550 ℃, terminal temperature is preheating furnace chamber hole flue-gas temperature, make each preheating furnace chamber products temperature and quirk flue-gas temperature gap more than 280 ℃, guarantee in the time that volatile matter is discharged, more than fire path temperature reaches burning-point, volatile matter can be burnt cmpletely;
The spray penetration of 2-2, flame must reach 0.35 times of the quirk degree of depth, and the temperature up and down of guarantee quirk is even;
2-3, insert thermocouple at the 2nd hopper of each preheating furnace chamber respectively, control each preheating furnace chamber products temperature and fire path temperature gap more than 280 ℃, according to its adjustment negative pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410121018.7A CN103868349B (en) | 2014-03-21 | 2014-03-21 | The energy-saving and emission-reduction method of carbon anode roasting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410121018.7A CN103868349B (en) | 2014-03-21 | 2014-03-21 | The energy-saving and emission-reduction method of carbon anode roasting furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103868349A true CN103868349A (en) | 2014-06-18 |
| CN103868349B CN103868349B (en) | 2015-09-30 |
Family
ID=50907142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410121018.7A Active CN103868349B (en) | 2014-03-21 | 2014-03-21 | The energy-saving and emission-reduction method of carbon anode roasting furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103868349B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201210012Y (en) * | 2008-02-26 | 2009-03-18 | 中国铝业股份有限公司 | Fire hole cover for calcining kiln |
| CN201545918U (en) * | 2009-11-11 | 2010-08-11 | 中铝国际技术发展有限公司 | Aluminum electrolytic tank cover plate structure |
| CN201809456U (en) * | 2010-08-18 | 2011-04-27 | 中国铝业股份有限公司 | Horizontal cover sealing device for aluminum electrolysis cell |
| CN102976774A (en) * | 2012-11-26 | 2013-03-20 | 中国铝业股份有限公司 | Heat-insulating and sealing material for inert-anode aluminum electrolysis cell and preparation method thereof |
| EP2670890A2 (en) * | 2011-02-04 | 2013-12-11 | Metalysis Limited | Electrolysis method, apparatus and product |
-
2014
- 2014-03-21 CN CN201410121018.7A patent/CN103868349B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201210012Y (en) * | 2008-02-26 | 2009-03-18 | 中国铝业股份有限公司 | Fire hole cover for calcining kiln |
| CN201545918U (en) * | 2009-11-11 | 2010-08-11 | 中铝国际技术发展有限公司 | Aluminum electrolytic tank cover plate structure |
| CN201809456U (en) * | 2010-08-18 | 2011-04-27 | 中国铝业股份有限公司 | Horizontal cover sealing device for aluminum electrolysis cell |
| EP2670890A2 (en) * | 2011-02-04 | 2013-12-11 | Metalysis Limited | Electrolysis method, apparatus and product |
| CN102976774A (en) * | 2012-11-26 | 2013-03-20 | 中国铝业股份有限公司 | Heat-insulating and sealing material for inert-anode aluminum electrolysis cell and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 吕博: "《国内铝用阳极焙烧炉技术现状及发展方向》", 《轻金属》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103868349B (en) | 2015-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103666507B (en) | Internally heated coal carbonization furnace, internally heated coal carbonization system and coal carbonization technical method | |
| CN103868349B (en) | The energy-saving and emission-reduction method of carbon anode roasting furnace | |
| CN208121019U (en) | Across the adjustable coke oven construction in hole | |
| CN103438438A (en) | Method and device for preventing membrane water wall type boiler from high-temperature corrosion and coking | |
| CN204997066U (en) | Low pressure natural gas zinc powder stove | |
| CN203501786U (en) | Firebrick for open ring-type roaster | |
| CN202730059U (en) | Large-size internally heated vertical retort used for carbonized long flame coal, non-caking coal and weakly caking coal | |
| CN107903920B (en) | Heat storage chamber of vertical furnace | |
| CN203212521U (en) | Low-burning-loss heat recovery tamping type coke oven for coking coal | |
| CN102250630A (en) | Staged combustion down-draft type heat recovery coke oven | |
| CN202869238U (en) | Continuous anode casting-mold roasting furnace | |
| CN202099234U (en) | Staged combustion type inverseflame heat recover coke oven | |
| CN203771705U (en) | Energy-saving, environment-friendly smoke-less boiler | |
| CN204268465U (en) | A kind of gas fired-boiler | |
| CN101314859A (en) | Setting method for temperature elevation curve of pre-baked anode in torrefaction heating period | |
| CN103386667A (en) | Miniature straightening device for flame path wall of baking furnace | |
| CN203890289U (en) | Furnace end heating device for coke furnace | |
| CN218710182U (en) | Combustion chamber furnace head structure for improving heat transfer of coke oven furnace head | |
| CN203030834U (en) | Roasting furnace capable of utilizing various fuels | |
| CN107268033A (en) | A kind of inexpensive ferrophosphorus casting cathode heating arrangement | |
| CN202188736U (en) | Open fire-free gas type drying room | |
| CN216738195U (en) | Oven column for coke oven | |
| CN203757777U (en) | Environment-friendly energy-saving reverse burning furnace | |
| CN207570307U (en) | It is molten to divide stove support open type arch furnace roof | |
| CN203442870U (en) | High-efficiency energy-saving gas fuel boiler furnace structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |