Fuel burning method to reduce sulfur emissions and form non-toxic sulfur compounds

Abstract From the Canadian patent

A combustion process is disclosed for burning a fuel containing sulfur characterized by low sulfur and particulate emission and formation of solid, non-toxic sulfur compounds. The process comprises mixing the sulfur containing fuel with an additive capable of reacting with sulfur; burning the mixture in a first combustion stage with less than 75% theoretical air and at a temperature below the melting point of the ash but, sufficiently high to cause reaction between the additive and any sulfur in the fuel to facilitate removal of the sulfur compounds formed; passing combustible fuel gases and particulates from the first stage to one or more further stages to complete the combustion of the …