AUk Collaboration With Netherlands And Australian Nox Reduction Research Using Overfire Air Staging: Project Profile

Abstract:

This document details the objectives, cost, duration, and summary of the research carried out by the Department of Trade and Industry into NOx reduction using overfire air staging. This work extends previous high temperature wire mesh (HTWM) studies at ICSTM, including two previous DTI projects, examining the relationship between NOx from aerodynamically air staged low NOx burners, principally Mitsui Babcock MkIII, and char nitrogen. With aerodynamic air staging alone, however, higher apparent char N conversions and additional NOx contributions from thermal and possibly other sources were observed and data from a number of different plants had to be used to cover a similar range of coals. The work proposed provides a basis for the application of a new standard test that is pertinent to pulverised coal combustion, and addresses the research and development priority areas identified by the Foresight Task Force including the impact of coal quality on turndown, burnout and NOx formation and the acquisition of data on and modelling of combustion performance of coals.

Author(s):

DTI