Objective
Currently, the conventional approach for the abatement of organic compounds in electric steel-plants only concerns PCDD/F and consists in a process including the following phases:
- destruction of PCDD/F in a post-combustion chamber by bringing the primary fumes of the furnace to a temperature of 950°C using natural gas burners,
- quenching the fumes abruptly in order to go to the 600°C-250)C range and avoid the reformation of PCDD/F called De Novo,
- diluting the primary and secondary fumes in order to limit water vapour condensation that is harmful for bag functioning,
- possible injection of activated carbon in order to respect a value of 0.1ng/TEQ Nm³.
All of these phases in the conventional approach lead to a solution which is investment-costly and fossil energy-thirsty with consequently a large production of greenhouse gases.
In order to overcome all these disadvantages, the research project consists in implementing and promoting an innovating compact technique in the field of electric steel-plants associating the properties of filtering and catalysis in an inter-metallic filtering bag in order to abate the organic compounds contained in electric arc furnace fumes.
Water quenching becomes unnecessary as well as any injection of activated carbon, thus a simplification of the fumes treatment installation and a lower investment cost are achieved.
Topic(s)
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92260 FONTENAY-AUX ROSES
France