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Southwest Institute wins the EPC general contracting project for a large-scale PSA plant! Author/Source: Gasification World Date: 2022-07-05 Clicks: 9 On July 3, Southwest Chemical Engineering Research and Design Institute Co., Ltd. (hereinafter referred to as “Southwest Institute”) announced that it had won the bid for the EPC (design, procurement, construction) contract for the PSA unit in the refining and chemical integration project of CNOOC Ningbo Daxie Petrochemical Co., Ltd. (hereinafter referred to as “Daxie Petrochemical”). This is also the third PSA unit that Southwest Institute has constructed on Daxie Petrochemical using the EPC approach. It is reported that the large-scale PSA technology developed by the Southwest Research Institute is at the international leading level; it is a pressure swing adsorption system technology with independent intellectual property rights, created to meet the needs of the modern petrochemical, modern coal chemical, and hydrogen energy industries. In 2014, the Southwest Institute constructed two large-scale hydrogen extraction units at Daxie Petrochemical using the EPC approach: an 80,000 Nm3/h hydrogen extraction unit for reformed gas, and a 60,000 Nm3/h hydrogen extraction unit for shifted gas. Both units were brought online successfully on the first attempt and have been operating safely and stably for a long period of time to date, laying a solid foundation for winning this bid again. It is understood that the Daxie Petrochemical Integration Project (Phase 5) is an important expansion and renovation project for Daxie Petrochemical aimed at establishing a petrochemical integration industrial base with an annual production capacity of tens of millions of tons, further transforming and upgrading towards the chemical industry, and achieving high-quality development. The PSA unit won by the Southwest Research Institute is a large-scale PSA unit designed to support the Daxie Petrochemical Integration Project (Phase 5). It uses reforming hydrogen, disproportionation off-gases, and hydrogenated light gas as raw materials to produce industrial hydrogen with a purity of 99.9% and a flow rate of 100,000 Nm3/h. This set of PSA units serves as the main hydrogen source for the Phase 5 project and is an important part of the main process.