The upgrade project for the reaction product drying system of Yan’an Petrochemical Plant’s 300,000 tons per year propane/isobutane mixed dehydrogenation unit has been completed and put into operation
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The technical upgrade project for the 300,000 tons/year propane/isobutane mixed dehydrogenation unit was successfully put into operation. 2025-08-11 Recently, the upgrade project for the reaction product drying system of Yan’an Petrochemical Plant’s 300,000 tons/year propane/isobutane mixed dehydrogenation unit was completed and brought into use. This project successfully overcame the technical barriers that restricted the long-term operation of the device, achieving more flexible production organization, simplified startup procedures, and more stable operation cycles. It is understood that this unit utilizes a UOP process package, and through continuous catalytic regeneration dehydrogenation technology, propane, saturated liquefied gas, alkylated C4, and etherified C4 are converted into propylene, isobutylene-rich compounds, and other by-products. This process employs mixed dehydrogenation, integrating all steps into a single unit for production. Compared to other similar processes, this technology has been shown to have lower production costs and higher return on investment. It is reported that the total investment for this project is 8 million yuan. The main construction content of the project is to add another set (two) of reaction product dryers, which will form a backup system to the existing one. Two major breakthroughs were achieved after the renovation: first, the risk of corrosion in the downstream equipment and pipelines was significantly reduced ； Second, it enhances production flexibility, providing a reliable guarantee for the long-term operation of the facility. The successful operation of this project has not only improved the efficiency of the equipment’s operation but also provided valuable experience for the industrial application of domestic adsorbent technologies, which is of great significance for promoting independent innovation in key technologies within the petrochemical industry.
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