Nozzle mix burner SULFLAM®

chambergasindirectly fired

Fives’ Pillard SULFLAM® Claus burner is designed to mix combustion gases in the post-flame zone of a sulfur recovery unit (SRU), at high temperature. This is vital for an efficient Claus reaction within the furnace (2H2S + SO2 ->2 H2O + 3/2 S2). A DOUBLE-IMPULSE, HIGH-INTENSITY BURNER Each Pillard SULFLAM® burner is tailor-engineered through in-house computational fluid dynamics (CFD) modeling. This ensures optimal performance, according to each unique SRU’s process characteristics. The burner is available in axial and tangential firing configurations, adaptable to any kind of combustion chamber. Pillard SULFLAM® ensures excellent flame stability in high excess air conditions during cold start-up and refractory dry-out phases. It is designed with a double stream acid gas tip to enable a two-stage mix and a double impulse, matching the different phases of the kinetic reaction in the Claus furnace. Key benefits: • High-intensity, compact flames • Excellent mixing • High flame stability, even with a lean acid gas stream and during the cold start-up and refractory dry-out phases, under high excess air conditions • High turndown ratio with low acid gas pressure • Efficient processing with very lean acid gas, using conventional Claus and associated tail gas units SPECIFIC FUEL GAS CO-FIRING DESIGN The Pillard SULFLAM® burner has a very specific design for co-firing fuel gas. This is essential for increasing the flame temperature when operating with hydrogen sulfide (H2S) lean acid gas. The fuel gas is added peripherally and injected into the combustion air, where it is burned with the required amount of excess air.