Method of reducing smoke and particulate emissions from steam boilers and heaters operating on solid fossil fuels

#1. Technical Field

#The present invention relates in general to a fuel additive that is a combustion catalyst for solid fossil fuel and in particular to a catalyst containing an over-based magnesium compound combined with a soluble iron compound. Such catalyst is particularly useful in heaters using coal or synfuel.

#2. Description of the Prior Art

#The composition can be formulated as a concentrate, which preferably contains about 5.5% iron, by weight, and about 1.1% magnesium, by weight. Dilutions of this concentrate can be made for convenience of use.

#The oil-soluble iron compound of this invention may be prepared in a single batch in laboratory quantities. The apparatus required is a 3-Neck round bottom 1,000 ml. flask, heating mantle, temperature controller, 0-400° C. thermometer, stirrer center mounted with a motor and controller, condenser and vacuum pump with trap.

#The reactants are as follows: 1 Iron Oxide 79 gms. Carboxylic acid (MW > 200) 720 gms High Boiling Process Solvent 215 gms