Design of pressure vessel for natural gas with high H₂S, CO₂ and Cl^- contents

The basic designing practices of pressure vessels for natural gas field with high H₂S, CO₂ and Cl^- contents were introduced. Meanwhile, handling of problems appeared during manufacture and inspection process, as well as basic situations of the pressure vessels after put into production were explained. These measures ensured the safety of the pressure vessels and the successful start-up of the devices to produce qualified natural gas, condensate oil and corresponding affiliated products. All of above made a breakthrough in the large gas field development both at home and abroad, and the unit was successfully commissioned abroad. The practices and processing suggestions in the approaches also provided new safe and convenient ways to implement in the development of similar gas field abroad, and provided references in design and construction for similar units.