Objective
The objective of this project is to understand the factors influencing the formation of NOx in regenerative burners and to develop means of reducing NOx production through modifications to burner design or operation, or choice of fuel.
The overall programme can be divided into four components:-
(i) Detailed studies of NOx formation on existing regeneratively fired burner installations in the British steel industry. These installations use the range of fuels available at integrated worksblast furnace, coke oven and BOS gases and imported fuels such as natural gas and fuel oil. Both single and double regenerative burners are operated, the latter with lean fuels.
(ii) Tests on established experimental burners plants at the Swinden and Welsh Laboratories of British Steel. Between them, these two plants provide facilities for experimenting with a range of fuels and with single- and double-regenerative burner designs.
At Swinden Laboratories the single-regenerative burner can be fired with natural gas, heavy fuel oil and gas oil and bottled carbon monoxide could be used to simulate BOS gas. The other works-arising gases (blast furnace, coke oven) are available at the Welsh Laboratory plant, which is equipped with a double-regenerative burner system.
NOx production will be examined at each site for a range of combustion conditions and existing burner designs.
(iii) A range of NOx reduction strategies will be examined at the two experimental burner plants for the different fuels involved. The strategies to be considered include:
- flue gas recirculation
- staged combustion
- sub-stoichiometric combustion
- injection of chemical agents e.g. water.
(iv) Throughout the project, mathematical modelling techniques will be developed and applied to enable NOx levels to be predicted. This will aid the design of low-NOx systems and should hence speed up progress.
At the end of the project the range of applicability of successfully developed NOx reduction strategies will be assessed and recommendations made for installation within the steel industry.
Well-established methods of measurement will be used for the determination of waste gas parameters - temperature, flow, chemical components etc. In particular, the chemi-luminescent technique of NOx measurement will be applied.
Fields of science (EuroSciVoc)
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Programme(s)
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Topic(s)
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Funding Scheme
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Coordinator
S60 3AR ROTHERHAM
United Kingdom
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.