Abstract: The volatile organic componds(VOCs) treatment unit of the wastewater treating plant of PetroChina Yunnan Petrochemical Co. Ltd. adopted the technology route of enhanced desulfurization - concentration homogenization - catalytic combustion. The process fluctuated greatly in the initial stage of operation, and there was a risk of excessive gas output from the reactor. The influence factors of sulfur content and water vapor were analyzed, and the optimum operating conditions including VOCs composition, reaction temperature and air speed were determined, which ensured the stable operation of the process and the stable discharge of gas from the reactor.

Key words: catalytic combustion, volatile organic compounds, wastewater treating plant