Method for abatement of gaseous pollutants

A process for abating chemical pollutants in a pollutant-containing gas stream comprising the steps of introducing said gas stream into a reaction chamber through a pre-reaction section comprising at least one conduit accommodating at least one secondary inlet for introducing at least one additional gas, liquid and/or solid into said pre-reaction section;

• introducing said additional gas, liquid and/or solid into said secondary inlet;
• causing a reaction of said gas stream with said additional gas, liquid and/or solid by mixing and, optionally, heating, to form a precursor reactive stream;
• introducing said precursor reactive stream into said reaction chamber and causing pollutant-abating reaction in said chamber at a reaction temperature within a temperature range of from about 650° C. to about 950° C.