SUFA system upgrade

The Challenge

At EPK Kilroot, the plant operators were keen to reduce NOx down from 300mg/Nm³ to <200mg/Nm³ as cost-effectively as possible.

RJM Solution

To tackle this challenge, RJM developed its own, patented solution to deliver additional air into the centre of the fireball from below. This is a relatively low-cost solution and delivers further NOx reductions without the need for additional levels of secondary measures such as SCR or SNCR.

Results

RJM’s patented Separated Under Fire Air (SUFA) system can be summarised as delivering the following results:

• Injects secondary air from the bottom of the furnace into the centre of the rotating fireball
• Captures carbon in the centre of the fireball that would otherwise be left unburnt
• Delivers lowest possible NOx on a T-fired unit
• Enables firing to operate at low stoichiometry
• High efficiency