Core Insights - The "Rich Oxygen Claus" project, the first of its kind in the natural gas purification sector, has been launched at the Wanzhou branch of the Natural Gas Purification Plant, which is expected to significantly enhance sulfur recovery and gas processing capacity [1][2] Group 1: Project Overview - The Wanzhou branch's sulfur recovery process upgrade is projected to increase raw gas processing capacity by 38 million cubic meters by 2025, producing 3,839 tons of sulfur, which can meet the daily gas needs of 38 million households [1] - The Natural Gas Purification Plant is the largest in China, with a daily processing capacity of 62.8 million cubic meters and an annual capacity of 21 billion cubic meters [1] - The Wanzhou branch is China's first high-sulfur natural gas purification plant designed, operated, and managed independently, with a daily capacity of 2 million cubic meters [1] Group 2: Technological Innovations - The project incorporates the "Rich Oxygen Claus" technology, which involves adding a membrane separation oxygen production unit to mix oxygen-rich air with the main air supply, enhancing the sulfur recovery unit's processing capability [2] - Post-upgrade, the daily output of the sulfur recovery unit is expected to rise from 1.35 million cubic meters to 1.5 million cubic meters, with sulfur production increasing to 153 tons per day [2] - This upgrade addresses challenges such as equipment corrosion, leakage, and high safety risks associated with high-sulfur purification facilities, demonstrating a strategic approach to project management and technical execution [2] Group 3: Current Capacity - The Natural Gas Purification Plant currently maintains a stable raw gas processing capacity of over 51 million cubic meters per day [3]