Fuel burning method to reduce sulfur emissions and form non-toxi

Details Fuel burning method to reduce sulfur emissions and form non-toxi Fuel burning method to reduce sulfur emissions and form non-toxi

1984-12-13

1986-04-15

Favors, Edward G.

Furnaces

Process

Burning pulverized fuel

110263, 110342, 110343, 110345, F23D 100

Patent

active

045820058

ABSTRACT:
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 fuel; and oxidizing, in a separate zone, sulfur compounds formed in the first reaction zone by reaction between the additive and the sulfur in the fuel to form non-toxic sulfates.

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