Product Attribute:
Applicationt:
melting furnace
Production Description:
Hunan Baling Furnace Energy Conservation Co.,Ltd(Baling Energy, stock code:831054)is established in Nov.1998, as a professional high-tech manufacture engaged in R&D designing, manufacturing and servicing for industrial energy-saving furnace equipments. The main products include no bypass unpaired reversible regenerative combustion type furnaces, rotary regenerative air pre-heater, silicon carbide metal combination air pre-heater, blower and induced draft fan for combustion system etc., which are used widely for non-ferrous metal, machinery, building material, ceramic, steel, petrochemical and similar industries.
Since 1998, the technology innovation supports Baling Energy expanding continuously, the registered capital reach 8.5millionUSD, fixed assets as 24.5million USD, workshop area as 48,000sqm, total size as 166,666sqm, with 280 employees including 50 R&D staff, and 20 more of them are with high and intermediate titles. The products are exported all over the world except China domestic market, playing the leading role in the whole saving-energy equipments industry. In August 2014, Baling Energy is listed on the stock in the NEEQ market successfully, became the first stock company in Yueyang city. And Baling Energy set up two subsidiaries as Yueyang Shunda Energy Furnace Service Co.,Ltd and Yueyang Anda Refractory Co.,Ltd, providng the two major production bases for industrial energy-saving furnace equipments and refractories.
Baling Energy has owned the ISO9001 quality system, ISO14001 environment system, GB / T28001 Occupational Health and Safety System and CCC mandatory product certification; got 24 utility, inventions and appearances patents; 2 patents passed PCT international search; and the new patent of Reversible regenerative combustion system and Control system is in applying from 5 countries as America, Brazil, Mexico, India and Vietnam. The technology of No bypass unpaired reversible regenerative combustion and Silicon carbide metal composite air preheating received from the Hunan Science and Technology Achievement Appraisal office in 2013, with results of International advanced technology and leading domestic technology. The no bypass unpaired reversible regenerative combustion system can save more 15-25% energy than the traditional combustion system, meanwhile, this saving energy technology is certified by China Quality Certification Center in 2015 and listed in National key low carbon energy saving technology promotion directory(2015version energy part).
Based on sincerity, mature quality, respecting clients and excellent service, Baling Energy is focusing on the furnace technology innovation, targeting smart and leading technology innovation. Through more than 10 years, Baling Energy has arrived and exceeded international advanced power consumption level. In the future, Baling Energy will keep developing the energy saving and low carbon technology, striving to become the leading professional supplier for complete industrial saving energy furnace equipments and control systems.
Regenerative combustion system
Application range :
1350 regenerative series application
Aluminum and other non-ferrous metal smelting furnace
Steel furnace, heat treatment furnace
Temperature refractories, ceramics, sintering brick kiln
1650 regenerative series application
Copper, steel, iron and other high-temperature furnace
Refractories, ceramics and other high-temperature sintering furnace
Glass, building materials and other high-temperature furnace
Typical configuration :
Types : 1 unit burning with 2 units exhausting, 2 units burning with 3units exhausting, 3 units burning with 5 units exhausting, 4 units burning with 6 units exhausting, 5 units burning with 7 units exhausting
Paired regenerative application
Advantage : simple configuration, low cost
Disadvantage : consumption is 20-30% higher than unpaired furnace.
Application range of paired regenerative combustion system
1. When considering the low running rate, low fuel consumption and low cost, like liquid aluminum holding furnace.
2. When some process need the waste heating of flue gas, and request to have secondary straight flue.
3. When the installation location is limited to arrange more burners because of the furnace structure.
Technical Specifications
Product Features
Technical specification
1). Temperature efficiency: 90%,maximum as 93%
2). Total recovery rate of flue gas:90%,maximum as 92%
3). Comparison with non energy-saving furnace:
1350 Series energy-saving rate : 40%~60%
1650 Series energy-saving rate : 50%~70%
4). Comparison with traditional paired regenerative combustion technology, the energy-saving rate: 20%~30%
1. Unpaired burner with less burning and more exhausting
Working principle: 3 units of regenerative burners as one group, to make the flue gas exhausting units more than burning units, as picture.
Explanation: When No.1 unit is burning, No.2 and No.3 units are exhausting; when switching to No.3 in burning, No.1 and No.2 units are exhausting, working like this as a cycle.
Features
1) . Solved the problem of furnace pressure
The way of less burning and more exhausting increased the flue exhausting area and controlled the furnace pressure below 50Pa.
2). Without auxiliary bypass flue, flue gas heat recovery rate will be higher:
After cancelled the auxiliary flue, the high temperature flue gas would go though the regenerative chamber, total flue gas heat recovery can be 90%, 20 to 30% more energy-saving than traditional paired regenerator.
3). High temperature efficiency
In the regenerative chamber, the throughout volume of flue gas increased and throughout time prolonged, which makes the air preheating temperature 50-100 lower than hearth temperature only, but temperature efficiency arrives 92% .
4). High combustion efficiency, low excess air ratio and good flame rigidity
The way of less burning and more exhausting solved the problem of low combustion efficiency, serious excess of air and unperfect flame shape and rigidity caused by enlarged air hole of traditional paired regenerator.
5). Progressive switching, small fluctuation of furnace pressure
There is 1unit burner in exhausting normally when in switching, reducing the furnace pressure fluctuation.
2. Progressive Switching
1). Progressive switching working principle : When 5units regenerative burners is a group, then 2(N)units or more will be in burning, its not switched simultaneously, but switch as 1/N cycle one by one, and only 1 pair( 2units) burners will be in switching each time.
2). In switching, the fluctuation of furnace pressure is small:When there are 2units burners switched to exhausting smoothly, this situation will reduce the furnace pressure fluctuation in switching.
3). To prevent furnace from explosion: When there is1unit burner switched to firing smoothly, this situation will reduce the furnace pressure fluctuation and prevent explosion .
3. Overhead Type Regenerative Chamber
1). To reduce storage of ash and compaction on regenerator:
A. Equipped with ash storage room and ash cleaning exit, and the burner is exhausting upwardly, the ash will be hard to stay on the regenerator;
B. The wind speed downwardly is faster than smoke speed, self-cleaning ability is perfect which can extend the regenerator cleaning cycle and working life.
C. Take smelting furnace as example: regenerative ball cleaning cycle can be from 10-30 days extending to 1-6 months.
2). Grate brick
Good high-temperature performance
Resistance of shock cold and shock heat
Good high-temperature strength
Good resistance of ash
Good resistance of erosion
Small pressure loss
Long working life span
4.High temperature burner-Low NOX burning technology
Staged air supply combustion Cyclone flue gas recirculation
High speed flame eject and entrain flue gas Partial flue gas recirculation
High temperature lean burn Energy saving and reducing NOX emissions
Lean combustion with low oxygen content, low burning loss
Low hearth oxygen content, low alloy burning loss
Good flame shape and rigidity Environmental coordination type energy saving combustion technology
5.Low metal burning loss
Factors for influencing burning loss in metal melting :
1. Melting surface area: the larger the melting surface area is, the more opportunities melting reacts with oxygen, then higher burning loss occurred.
2. The oxygen content in furnace gas: if the oxygen content in furnace gas is high, burning loss is high.
3. Melting temperature: when the melting temperature exceeds 800, the density of surface oxide film start to change from 3.5g /sqm of -Al2O3 to 4.0g / sqm of -Al2O3, , and the volume start to shrink 14.3%, the continuous and compact oxide film surface cracks and makes liquid aluminum occur more oxidation,and the burning loss increases.
4. Melting time: the longer melting time is, the more oxygen the melting body inhaled, makes burning loss high.
This product features:
1. The furnace gas oxygen content: under high temperature and oxygen-depleted combustion, the oxygen content in furnace is less, and burning loss will be low.
2. Temperature uniformity, no partial over-burning: three burners are installed in different parts of furnace, when the combustion is switched in cycle, each part of melt temperature will be in uniformity, to avoid partial over-burning and reduce burning loss.
3. Short melting time: the system thermal efficiency and melting efficiency is high, the melting takes short time, and the burning loss will be low.
4. Reducing burning loss rate: compared with ordinary regenerative burners, this burning loss rate decreases 0.3%-0.5%.
6. High temperature burner - Special gas gun
A. Special gas gun and the protection air,without protection fan motor.
B. Reducing the cooling blowed by cold air volume,lower the consumption.
C. Special gas gun, simple structure, low failure rate.
7. Regenerative automatic control system
1). Large and small two valves firepower :
Equipped with large and small two automatic gas valves
The switching of large and small gas valve is controlled by hearth or materials temperature
The gas valve is flexible in adjusting manually, to control the gas volume.
2). Inverter frequency adjusting air volume ( two gear frequency switching):
Inverter frequency controlling, induced draft fan
Presetting two gear frequency of the blower and induced draft fan, switch to large or small automatically
Fan frequency can be set manually as required
Energy saving, low noise, easy to adjust
3). Equipped with furnace pressure controlling :
Monitoring furnace pressure
Presetting induced draft fan frequency by large or small valve
Adjusting induced draft fan frequency automatically
4). Double fire detection protection:
Equipped with ignition flame ionization detector flameout protection device, to prevent the ignition failure from the blast furnace accident caused by fire detection hysteresis.
Equipped with fire flame UV detection flameout protection device.
5). Two gear firepower and digital proportional air-fuel ratio control (optional):
Equipped with smart gas meter and air flow meter
Presetting two gear firepower and required air-fuel ratio, to control the fire according to temperature, and to adjust fan frequency automatically according to air-fuel ratio
To meet wide air-fuel ratio adjustment as furnace temperature variations.
6). Automatic reversing and ignition
Ignition in advance when in reversing
Extinguish the ignition gun after fire started
7). Fixed temperature adjustment switching cycle:
Setting the exhausting temperature and switching cycle, when exhausting over-temperature, the switching cycle will be shortened automatically.
8). Recycled purging is available before ignition
9). Other security measures:
Gas and ventilation pressure detection
Reversing valve location detecting
Gas emergency shut-off
Over-temperature alarm with sound and light
Fault diagnosis
10). Networking of upper management machine (reserved interface)