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Dual Fuel Burners

dual fuel electrical modular mono block burner

Nox Reduction Methods

During the last century, Nitrogen oxide emissions, called NOx, have constantly been increasing. Due to the destructive effects of nitrogen oxides on the health of

Industrial Furnace Burners

The «furnace industry» and products determine the type of flame contact. In many heat treatment processes, where the combustion gases must not come into contact

Dual Fuel Burners

Electrical Modular Monoblock Dual Fuel burner (RLGB-M Series)

RLGB-M Series or RAADMAN Modulating dual fuel burners, covering a firing range from 700 to 17000 kW, are designed for a wide range of domestic and industrial applications. These Industrial burners have been tested and evaluated based on Iran national standard ISIRI-7595 (BS-EN 676) and ISIRI-7594 (BS-EN 267) for gas and oil operation respectively. According to performed experiments, the values of CO during low excess air operation is lower than 30 mg/kWh (in some cased very close to Zero). The precise design of their combustion head results a full gas-air mixture that guarantees high efficiency levels in all various applications. These Monoblock burners are equipped with LAMTEC and SIEMENS control system with capability of full air/gas ratio control throughout entire burner operating range as well as devices of well-known European companies such as Dungs, Kromschroder and Suntec. Burner superior design accompanied by high quality electronic devices have also resulted a further improvement in boiler’s performance in order to decrease fuel cost and emissions.


RLGB-M Series Firing Ranges


RLGB-M Series Technical Data

  • N.G operation: Electrical Modular
  • LFO operation: II or III Stage

Electrical Full Modular Monoblock Dual Fuel Burner (RLGB-M/M Series)


RLGB-M/M Series Firing Ranges


RLGB-M/M Series Technical Data

  • N.G operation: Electrical Modular
  • LFO operation: Electrical Modulars

RLGB-M-M-TECHNIQUE


Gas Train Diagram

GT1 (Pressure input<360 mbar, separated items)
GT2 (Pressure input<360 mbar, multi bloc gas train)
GT3 (Pressure input<360 mbar, separated gas train, with pilot)
GT4 (Pressure input<360 mbar, multi block gas train, with pilot)
GT5 (Pressure input>360 mbar, separated gas train, with pilot)
GT6 (Pressure input>360 mbar, multi block gas train, with pilot)
1: Ball Valve 8: Safety gas valve 14: Shut-off valve
2: Gas filter 9: Main gas valve 15: High pressure regulator
3: Push button valve 10: Leak Test gas pressure switch 16: Relief valve
4: Pressure Gauge 11: Max gas pressure switch 17: Pilot regulator
5: Pressure regulator (Low-pressure) 12: Butterfly valve 18: Pilot valve 1
6: Pressure Gauge 13: Multi-Block Solenoid Valve 19: Pilot valve 2
7: Min gas pressure switch

Gas Train Size

RLGB-M-Gas-Train

RLGB-M-M-Gas-Train
*Combustion head

Special Note:The above gas train sizes are proposed based on the costumer’s requests and the limits of the projects while placing an order. Therefore, we kindly ask the readers that assume this information as an initial and most likely offers.


Monoblock Modular oil delivery system

Generally, two types of atomizing principle are utilized in Raadman modular oil burners:

Pressure based spill back lances/atomizers

All Raadman pressure based atomizing modular oil burners are equipped with a burner lance and a fly-back oil atomizer. The burner-lance is especially suitable for use in or on an oil burner and is designed to operate spill back atomizers with integrated shut-off needle. The strong spring on the actuating rod pushes the needle in closed position. This ensures a reliable shut-off under all circumstances.

Fuel, branched off from the supply line actuates the piston for opening, either controlled by two external solenoid valves or by one 3/2 solenoid valve. The piston has a fixed travel. While opening, the needle inside the atomizer is retracted in the correct position by means of a spring at the back of the atomizer against a fixed stop on the needle itself.

During the pre-purge period of the burner, the needle is keeping the orifice closed and the fuel circulates through the lance at pre-set supply and return pressure.  On energizing both solenoid valves and the 3/2 solenoid valve, even after long idle intervals, there is immediate atomization guaranteeing perfect ignition.

The burner-lance is suitable for supply pressures from 20 up to 40 bar and fuel temperatures up to 140°C.

monoblock-electrical-dual-fuel-burner-10 monoblock-electrical-dual-fuel-burner-11 monoblock-electrical-dual-fuel-burner-12

Air or Steam lances/atomizers

All Raadman air/steam atomizing modular oil burners are equipped with a special burner lance and an air/steam atomizer. The burner-lance is designed to operate 32-Y atomizers with compressed air or steam.

The strong spring on the actuating rod pushes the needle in closed position. Compressed air, controlled by an external 3/2 solenoid valve, actuates the piston for opening. The piston has a fixed travel, pulling the needle in the correct position when it opens.

During the pre-purge period of the burner, the needle is keeping the central orifice in the reverse disc closed. On energizing the 3/2 solenoid valve, even after long idle intervals, there is immediate atomization guaranteeing perfect ignition.

The burner-lance is suitable for supply pressures up to 16 bar and fuel temperatures up to 140°C.

monoblock-electrical-dual-fuel-burner-13 monoblock-electrical-dual-fuel-burner-14 monoblock-electrical-dual-fuel-burner-15

Modulating Monoblock Dual Fuel Burner Type

Type OL-I: (Pressure based atomizer – without closing needle)

Type OL-II: (Pressure based atomizer with closing needle)

Type OL-III: (Air/Steam Atomizing technology with closing needle)

MP: Pump motor PA: Min. Air pressure switch TA-G: Gas ignition transformer
FF: Flame sensor PAM: Max.  air pressure switch BSV: Butterfly valve servomotor
VR: Return solenoid valve POmin: Min oil pressure switch ASV: Air damper servomotor
VR1: Return solenoid valve POMax: Max oil pressure switch HSV: Head servomotor (Optional)
VR1(NO): Return solenoid valve (N.O) VA: Air Valve BV: Butterfly valve
VD: Light oil safety valve (N.C) AR+F: Air regulator and filter OR: Oil Regulator
VD1: Light oil delivery valve (N.C) TA: Flame Scanner MV: Fan motor
VA1: Air solenoid valve1 FS: Flame Sensor VSD: Variable speed drive(optional)
VA2: Air solenoid valve2 F: Gas or oil flame C: Coupling
TA-O: Oil ignition transformer G: Gauge

Emissions

RLGB-M-Series (Gas Operation)


RLGB-M-Series (Oil Operation)


RLGB-M/M-Series (Gas Operation)


RLGB-M/M-Series (Oil Operation)


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