Energy-saving F Series(CBF) Oil Burners Industrial Furnaces

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1、PREFACE

F series oil burners were developed in 1979 in china and have passed the appraisal by the Ministry of Machine Building of Ching.They have won the gold Medal in the first International Patents and new Technical Equipments Exhibition and the Third Prize of Major National Science and Technology Invention Achievements.

F series have been saled to all over the country due to their good quality,simple structure,easy to maintenance,energy-saving and favorable to automation.F series have now made the National Standard.

 

2、FEATURES

1.The oil flowrate is changed with entrance oil pressure,at the same time the combustion air flowrate is changed with oil flowrate and they can be operated on a prefixed ratio.So it can get the optimum combustion results high efficiency,reduceing air pollution and avoid too much oxidizing of metal.

2.Low air excessive coefficient,higher combustion tempera-ture and wider adjustment ratio.

3.Energy-saving:about(10-15)% oil can be saved.

4.Low air pollution.

5.Easy to be controlled in automatical system.

6.Can burn varied oil:light oil,heavy oil and high visco-sity oil.

 

3、CONSTRUCTION AND PRINCIPLE

F series oil burners are consist of casing,oil nozzle,oil vat,volumn piston,bellows,ratio adjustment handle,etc.(showed in fig.1)

The oil which pressure is changed in (49-294)kpa is atomized three time in the burner by low air pressure,the atomized oil particles are pretty small(50-80um) and uniform,so they can be mixed with air in edsirabe conditions.

For easy to installating and maintenance,a new connection structure is adopted for oil tube and the burner,So the internal components inside the burner can be remove out of the casing easily only by disassembling a screw (for F80 and F150 model) and needn’t to disassembling the oil tube and other components.

If needs to increasing the combustion capacity, can increase the entrance oil pressure and the bellows will be compressed and it makes the column piston(a small oil groove on it) move a littlee distance to right side of the burner. At the same time, the spring is compressed and the two pressure are in equilibrium state. Becaust the oil pressure is changed with the length of oil groove, so the quantity of oil is increased.And the exie are of air is increased due to it is moved with the column piston.So the quantity of air is increased under a certain air pressure.The air-oil ratio can be prefixed by adjusting the ratio adjustment handle.

 

4、CHARACTERISTLCS


Table 1. F Series oil Burners’ Characteristics

           Model Number

        Value

Parameter

F50(2inches)

F80(3inches)

Oil Pressure(KPa)

49

98

147

196

245

294

49

98

147

196

245

294

Combustion Capacity(kg/h)

3.7

7.5

11.2

15.0

18.7

22.5

7.5

15.3

23.2

30.5

38.4

46.0

Air Flowrate(Nm3/h)

43.5

85.6

130

174

217

260

89

175

264

355

440

530

Air Pressure(KPa)

6.9

Asjustment Ratio

16

Oil viscosity(m2/s)

36.2×10-6

Flame angle(°)

25-30

Flame length(m)

1.5

2

 

           Model Number

        Value

Parameter

F100(4inches)

F150(6inches)

Oil Pressure(KPa)

49

98

147

196

245

294

49

98

147

196

245

294

Combustion Capacity(kg/h)

10.8

21.3

32.0

43.0

53.7

64.0

18.4

36.7

55.0

74.0

92.0

110

Air Flowrate(Nm3/h)

123

247

370

494

618

740

210

420

630

840

1050

1260

Air Pressure(KPa)

6.9

Asjustment Ratio

16

Oil viscosity(m2/s)

36.2×10-6

Flame angle(°)

25-30

Flame length(m)

3

4

 

In order to meet the needs of all dinds of furnaces, another three series oil burner developed based on the F-series have been developed, The main feature of them is the combustion air is of (150-350) and (350-550) for F-RF and QRF respectively. And the shape of flame can be changed for F-QRFT. So about (15-20)% and (20-30)% of oil will be saved if use them respectively and the temperature of furnace will bo up quickly. Now they are widely used inChina. The QRF burner has won the Silver Medal of International Invention Exhibition in Geneva.

 

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