Patent ID: 7867459

Claim:
A compact, tiered sulfur recovery unit, comprising: a burner fluidly connected to a combustion chamber; a reaction chamber having a horizontal body and a substantially upright plenum; the horizontal body of the reaction chamber having opposing ends; the upright plenum having a lower end and an upper end; wherein one end of the horizontal body of the reaction chamber is fluidly connected to the combustion chamber; wherein the other end of the horizontal body of the reaction chamber is fluidly connected to the lower end of the upright plenum; a waste heat boiler fluidly connected to the upper end of the upright plenum of the reaction chamber; a steam drum fluidly connected to the waste heat boiler; an inlet port in the horizontal body of the reaction chamber for receipt of an acidic sulfuric gas; an outlet port in the waste heat boiler to release hot combustion products for additional downstream sulfur blowdown; and wherein the waste heat boiler is mounted above the horizontal body of the reaction chamber and the steam drum is mounted above the waste heat boiler, resulting in a compact, tiered sulfur recovery unit.