Hollysys helps China's largest single-unit sour natural gas purification plant successfully put into operation
Oct 13, 2025Recently, the Ziyang Branch of the Natural Gas Purification Plant of China National Petroleum Corporation Southwest Oil and Gas Field Company (hereinafter referred to as the Ziyang Branch), China's largest and most intelligent single-unit sour natural gas purification plant, was completed and put into operation in Sichuan. As the core control system supplier for the project, Hollysys, leveraging its fully independent and controllable integrated solutions and full lifecycle services, laid a solid technical foundation for the plant's safe and efficient operation, helping the project break multiple industry records and making a significant contribution to my country's progress in achieving independent energy equipment development.
As a key project for PetroChina Southwest Oil and Gas Field Company to build a 50 billion cubic meter annual gas production zone, the Ziyang Branch Plant is designed to process 4 billion cubic meters of raw gas annually, with a single unit processing up to 7.2 million cubic meters per day, setting a new record for similar processing capacity in China. The plant's equipment utilizes a purification process with my country's completely independent intellectual property rights for the first time, achieving a 100% localization rate for key technologies and equipment. The successful commissioning of the plant not only marks a major technological breakthrough in my country's clean processing of deep, high-sulfur, and complex natural gas resources, but also sets a new benchmark for independent and controllable domestic production in the industry through its full-chain localization efforts.