Patent ID: 6941743

Claim:
An apparatus for reducing emissions control system poisoning in a lean fuel combustion system having a stream of effluent, comprising: a combustion system which operates at a lambda>1.2, a catalytically-based emissions control system, a base fuel, and present, in an effective amount to complex with at least one combustion byproduct in the effluent stream, a scavenger, said scavenger comprising an organometallic compound comprising at least one metal selected from the group consisting of magnesium, manganese, barium, cerium, strontium, iron, calcium, and mixtures thereof, said scavenger complexing with combustion byproducts of sulfur and phosphorus, said scavenger being free of a platinum group metal selected from the group consisting of platinum, palladium, rhodium, ruthenium, osmium, and iridium.