Abstract: After a period of operation and analysis, the process conditions of ammonia burning at the sulfur recovery unit of SINOPEC Luoyang Branch Company were optimized. Results showed that by increasing the air/feed gas volume ratio and the inlet temperature of sour gas to furnace, adjusting the volume fraction of ammonia in sour gas and optimizing instrumentation and control, the temperature difference of reactor inlet and bed layer increased to ensure fully reactions; the system pressure was maintained at 0.038 MPa and the NH3-N content in quench water was around 300 mg/L. Good economic, environmental and social benefits were obtained.