How it works
The DUOFLEX™ burner fires rotary kilns with pulverised coal or coke, oil, natural gas or any mixture of these fuels.
The burner may be fitted with extra ducts for secondary fuels such as plastic chips, wood chips, sewage sludge, etc.
The DUOFLEX burner is unique in that it features a central duct for gaseous and liquid fuels placed inside an annular coal duct. This duct is surrounded by two concentric channels forming two channels for axial and radial primary air respectively.
The two airflows are mixed before being injected via the conical air nozzle. The two outer ducts form a rigid support structure, minimising deflection of the burner pipe and ensuring long refractory life.
With one common nozzle for swirl air and axial air the degree of swirl can be altered without any appreciable change in total momentum.
Standard types are available for any fuel combination and a maximum capacity ranging from 20 to 250 MW, catering for even the largest of rotary cement kilns.
Optional equipment
- Replaceable outer burner tip
- Remote control
- BMS system (Burner Management System)
- Telescopic solid fuel connection systems