CN103123224B - Open-type roasting furnace heating curve and furnace moving operational method - Google Patents
Open-type roasting furnace heating curve and furnace moving operational method Download PDFInfo
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- CN103123224B CN103123224B CN201110370114.1A CN201110370114A CN103123224B CN 103123224 B CN103123224 B CN 103123224B CN 201110370114 A CN201110370114 A CN 201110370114A CN 103123224 B CN103123224 B CN 103123224B
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Abstract
The invention relates to an open-type roasting furnace heating curve and a furnace moving operational method. By adopting the operational method for shifting a combustion frame of a roasting furnace in advance, alternate operation of a sixth chamber and a fifth chamber of a heating furnace is achieved, a preheating furnace chamber is heated in a forcing mode, a variation trend of the temperature of preheating section tar separated out of heating-flue flue gas of the furnace chamber is changed, the heating-flue temperature of a downstream preheating furnace chamber is increased, the fact that the ignition temperature of the heating-flue flue gas is achieved when the tar is separated out is ensured, the tar can be combusted sufficiently, the flue gas discharged out of a roasting furnace system basically does not contain the tar, the requirements for direct emission and environment protection are met, pressure on flue gas treatment of a purification system is relieved, and the problem of tar accumulation of a smoke drainage system is solved. Meanwhile, complete combustion of the tar can lower the energy consumption level for unit product of the roasting furnace. By adopting the heating curve and improving the temperature level of the preheating section heating-flue, the system reaches heat preservation temperature in advance, the heat preservation time of the system is prolonged, and evenness of the temperature of roasted products is improved.
Description
Technical field
The present invention relates to a kind of temperature-rising method of open roasting furnace and move furnace operating method, particularly relate to a kind of open roasting furnace and move furnace operating system by change in roasting process, adjustment heating curve, improve preheating furnace room temperature, ensure tar Thorough combustion in quirk, make roaster system institute smoke discharging substantially not contain the temperature-rising method of tar and move furnace operating method.
Background technology
In anode-baking furnace roasting process, what adopt 30 hours moves the stove cycle more, and system configuration adopts three preheating furnace chambers, three pressure heated oven chamber and six to seven cooling furnace chambers to run.Along with the growth of roaster running time, the increase of stove deflection, equipment and system running there will be following bad phenomenon.
1, preheating furnace chamber inleakage increases, and fire path temperature is on the low side.
2, inleakage increases, and causes system negative pressure inadequate, and charcoal block heats up and do not catch up with normal heating curve.
3, fire path temperature is low, cannot ensure that tar burns completely, and tar is bonded on smoke evacuation system tube wall and valve, not only causes the difficulty of cleaning to increase, and also causes cleaning system to purify pressure increase.
4, the imperfect combustion of tar, causes energy waste, and system energy consumption increases.
Summary of the invention
The present invention relates to a kind of open roasting furnace temperature-rising method to solve the problems of the technologies described above and move furnace operating method, object is in roasting process, furnace operating mode is moved by what change roaster burning rack, the heating curve of adjustment System, improve preheating section furnace chamber flue-gas temperature, ensure that tar can burn completely in system.
For reaching above-mentioned purpose open roasting furnace temperature-rising method of the present invention and moving furnace operating method, after Room, system heating district six runs well a period of time, in advance the 3rd heated oven chamber's burning rack is moved to the 3rd preheating furnace chamber and carry out pressure heating, five Room runnings are carried out in the thermal treatment zone, be heated to after normally moving the stove time, furnace operating is moved to other boiler face equipment, the thermal treatment zone reenters six Room and runs well, carry out moving furnace operating time different from other boiler face equipment by burning rack, realize the alternate run of Room, system heating district six and five Room.
When the 3rd heated oven chamber's burning rack moves to the 3rd preheating furnace chamber in advance, according to the burning performance of tar in this furnace chamber, first open upstream burner to heat, open downstream burner again after having burnt in the tar of downstream position to heat, upstream and downstream all adopts low power run, controls heating rate.
During for 30 little time shift stove cycle, above-mentioned furnace operating mode six of moving Room normal operating time is 16 hours, pressure heating is carried out when the 3rd heated oven chamber's burning rack being moved to the 3rd preheating furnace chamber, zero-pressure frame moves to the 3rd heated oven chamber from first cooling furnace chamber, and the running time that system enters five Room runnings is 14 hours.
Controlled flue-gas temperature be divided into following interval by reaching each calefactive interzone of above-mentioned purpose open roasting furnace of the present invention temperature-rising method: 1,110 ~ 360 DEG C, naturally heated up 30 hours; 2,360 ~ 720 DEG C, naturally heat up 30 hours; 3,720 ~ 880 DEG C, naturally heat up 16 hours; 4,880 ~ 1050 DEG C, heating 14 hours are forced; 5,1050 ~ 1150 DEG C, heating 16 hours are forced; 6,1150 ~ 1150 DEG C, heating and thermal insulation 60 hours.
And traditional temperature-rising method is divided into following calefactive interzone: 1,80 ~ 260 DEG C, naturally heat up 30 hours; 2,260 ~ 650 DEG C, naturally heat up 30 hours; 3,650 ~ 950 DEG C, naturally heat up 20 hours; 4,950 ~ 850 DEG C, Temperature fall 10 hours; 5,850 ~ 1110 DEG C, heating 30 hours are forced; 6,1110 ~ 1150 DEG C, heating 10 hours are forced; 7,1150 ~ 1150 DEG C, heating and thermal insulation 50 hours.
There is following difference compared to traditional temperature-rising method in the intensification trend of the 3rd preheating furnace chamber in described roasting temperature-rising method: traditional temperature-rising method is divided into two temperature rise periods at the 3rd preheating furnace chamber, tar a large amount of combustion product gases temperature sharply rises 650 ~ 950 DEG C of natural temperature rise periods, and tar has burnt rear 950 ~ 850 DEG C of Temperature fall stages; And by adopting above-mentioned furnace moving method, this preheating furnace chamber heats up and becomes 720 ~ 880 DEG C of natural temperature rise periods and 880 ~ 1050 DEG C of pressure temperature rise periods.By forcing to heat the fire path temperature reduction avoiding this stage flue gas and cause because tar quantity combusted reduces.
Described roasting temperature-rising method above-mentioned moves furnace operating method by adopting, and its actual heat time was reduced to 166 hours by traditional 180 hours, but the temperature retention time of its maximum temperature extended to 60 hours by 50 hours.
Advantageous effect of the present invention: the present invention improves preheating section fire path temperature, when tar can be allowed to separate out, quirk flue gas has reached its ignition temperature, ensure the Thorough combustion of tar, make roaster system institute smoke discharging substantially not containing tar, in line environmental requirement can be reached, alleviate the pressure of cleaning system fume treatment simultaneously, solve the problem of smoke evacuation system tar accumulation; Burning completely of tar also can reduce the energy consumption level of roaster unit product; The temperature-rising method adopted, by extending temperature retention time, can improve the uniformity of roasted product temperature.
Accompanying drawing explanation
Fig. 1 is method of operating schematic diagram of the present invention.
In figure: 1, smoke discharge frame; 2, thermometric rack of measuring pressure; 3, burning rack; 4, zero-pressure frame; 5, air blast frame; 6, cooling frame; 7, roaster.Wherein roaster 7 can be divided into preheating furnace chamber (1P, 2P, 3P), heated oven chamber (1F, 2F, 3F) and cooling furnace chamber (1C ~ 6C) by the heating period.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
Open roasting furnace temperature-rising method of the present invention and move furnace operating method as shown in the figure, after Room, system heating district six runs well a period of time, in advance the 3rd heated oven chamber's burning rack 3 is moved to the 3rd preheating furnace chamber 3P and carry out pressure heating, zero-pressure frame moves to the 3rd heated oven chamber from first cooling furnace chamber, the thermal treatment zone enters five Room runnings, be heated to after normally moving the stove time, furnace operating is moved to other boiler face equipment, the thermal treatment zone reenters six Room and runs well, carry out moving furnace operating time different from other boiler face equipment by burning rack, realize the alternate run of Room, system heating district six and five Room.
When the 3rd heated oven chamber's burning rack 3 moves to the 3rd preheating furnace chamber 3P in advance, according to the burning performance of tar in this furnace chamber, first open upstream burner to heat, open downstream burner again after having burnt in the tar of downstream position to heat, upstream and downstream all adopts low power run, controls heating rate.
Six Room run well and refer to that preheating furnace chamber 1P, preheating furnace chamber 2P, preheating furnace chamber 3P, heated oven chamber 1F, heated oven chamber 2F and heated oven chamber 3F run well.
Five Room runnings refer to that preheating furnace chamber 1P, preheating furnace chamber 2P, preheating furnace chamber 3P, heated oven chamber 1F and heated oven chamber 2F operate.
Claims (1)
1. open roasting furnace moves furnace operating method, it is characterized in that after Room, system heating district six runs well a period of time, in advance the 3rd heated oven chamber's burning rack is moved to the 3rd preheating furnace chamber and carry out pressure heating, five Room runnings are carried out in the thermal treatment zone, be heated to after normally moving the stove time, furnace operating is moved to other boiler face equipment, the thermal treatment zone reenters six Room and runs well, carry out moving furnace operating time different from other boiler face equipment by burning rack, realize the alternate run of Room, system heating district six and five Room.
2. open roasting furnace according to claim 1 moves furnace operating method, it is characterized in that described furnace operating method of moving is after the 3rd heated oven chamber's burning rack heats a period of time, moved to the 3rd preheating furnace chamber in advance, pressure heating is carried out to this preheating furnace chamber, improves the temperature of preheating furnace chamber.
3. open roasting furnace according to claim 1 moves furnace operating method, it is characterized in that described furnace operating method of moving is when the 3rd heated oven chamber's burning rack moves to the 3rd preheating furnace chamber in advance, according to the burning performance of tar in this furnace chamber, first open upstream burner to heat, open downstream burner again after having burnt in the tar of downstream position to heat, upstream and downstream all adopts low power run, strictly controls heating rate.
4. open roasting furnace temperature-rising method, is characterized in that flue-gas temperature that each calefactive interzone controls is divided into following interval: 1,110 ~ 360 DEG C, naturally heats up 30 hours; 2,360 ~ 720 DEG C, naturally heat up 30 hours; 3,720 ~ 880 DEG C, naturally heat up 16 hours; 4,880 ~ 1050 DEG C, heating 14 hours are forced; 5,1050 ~ 1150 DEG C, heating 16 hours are forced; 6,1150 ~ 1150 DEG C, heating and thermal insulation 60 hours; 3rd heated oven chamber's burning rack moves to the 3rd preheating furnace chamber in advance, carry out pressure heating, avoid the 3rd preheating furnace chamber due to tar burnout flue-gas temperature decline phenomenon, added by fuel and carry out pressure heating, make flue gas continue to keep ascendant trend, improve the indoor quirk flue-gas temperature of preheating furnace, simultaneously when preheating furnace chamber separates out tar, quirk flue gas can be allowed to reach the ignition temperature of tar, ensure the Thorough combustion of tar.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110370114.1A CN103123224B (en) | 2011-11-21 | 2011-11-21 | Open-type roasting furnace heating curve and furnace moving operational method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110370114.1A CN103123224B (en) | 2011-11-21 | 2011-11-21 | Open-type roasting furnace heating curve and furnace moving operational method |
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| CN103123224A CN103123224A (en) | 2013-05-29 |
| CN103123224B true CN103123224B (en) | 2014-12-17 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103644728B (en) * | 2013-11-15 | 2015-10-28 | 山西华泽铝电有限公司 | A kind of novel furnace moving method |
| CN106546105B (en) * | 2016-11-07 | 2019-04-05 | 简阳市龙兴炭素有限公司 | The method for monitoring calcining carbon products temperature in roaster |
| CN108439999A (en) * | 2018-03-14 | 2018-08-24 | 江苏苏菱铝用阳极有限公司 | A kind of method of roasting for improving prebaked anode product yield and reducing energy consumption |
| CN110895103B (en) * | 2018-09-13 | 2021-09-10 | 沈阳铝镁设计研究院有限公司 | Method for moving combustion control system with standby smoke discharge rack |
| CN109470072A (en) * | 2018-10-25 | 2019-03-15 | 南京华电节能环保设备有限公司 | A kind of anticorrosion anti-coking smoke waste heat recycling device for coke oven |
| CN110514008B (en) * | 2019-08-30 | 2021-03-16 | 嘉峪关索通炭材料有限公司 | Production process of anode roasting furnace |
| CN111365986A (en) * | 2020-03-17 | 2020-07-03 | 中铝山西新材料有限公司 | Furnace moving method of annular roasting furnace |
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| FR2917818B1 (en) * | 2007-06-21 | 2009-09-25 | Solios Environnement Sa | METHOD FOR OPTIMIZING THE CONTROL OF A FUME TREATMENT CENTER OF A CARBON BLOCK COOKING ROTATING FIRE OVEN |
| CN101280998B (en) * | 2008-05-08 | 2010-06-09 | 中国铝业股份有限公司 | Anode roasting furnace uninterrupted negative pressure furnace moving method |
| CN101880896B (en) * | 2010-06-10 | 2012-08-29 | 索通发展股份有限公司 | Method for drying carbon anode roasting furnace |
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