The Radol MK II radiant wall burner is a development of the Airoil-Flaregas Radol burner design which has seen significant and successful service in reformer and other applications worldwide.

Reformers, and radiant wall furnaces in general, demand a very even heat distribution to the furnace tubes in order to meet the process requirements. The Radol burner fulfils the needs of such an application by radiating the heat to the tubes with minimal forward flame projection.

Objectives:

The main objective of the Radol burner enhancement was to produce an ultra-efficient, ultra low NOx burner capable of firing a wide variety of gases at low pressure, including 100% hydrogen.

100% Hydrogen Firing:

A unique high hydrogen gas nozzle allows the Radol MK II burner to fire 100% hydrogen continuously.

The ability to fire 100% hydrogen provides for an upset situation where hydrogen is being produced but, for whatever reason, is not required by the process. In this case the hydrogen can be fed to the burners rather than flaring or disposing by other means.

Ultra Low NOx:

The Radol MK II achieves ultra low NOx levels by a unique non-turbulent/low gas pressure/air mixing chamber. Additionally, peak flame temperatures are reduced to intimate flame contact with the muffle block refractory.

Key Features:

• Ultra low NOx (as low as 15 ppmv) 
• Capable of firing 100% hydrogen continuously 
• Can accommodate low gas pressure (0.1 bar) 
• Minimal excess air (5%) 
• Low air pressure <200 mm WC (19.6 mbar) 
• Ultra-efficient 
• Low noise - typically less than 80 dB'A' SPL 
• No possibility of soot or coke formation with any fuel including LPG or vaporised naphtha 

• Two burner sizes with a liberation range of 100,000 to 600,000 kcal/h 
• Single or dual fuel gas firing 
• Natural gas, LPG, vaporised naphtha, hydrogen, refinery gases, PSA off-gases, etc. 
• Capable of handling air temperatures from ambient to 550°C preheat