[Haichuan’s Best Practices] Yangzi Petrochemical’s alkylation unit adopts acidic gas to reduce costs

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2024/5/9 The spent acid unit of the alkylation unit at Yangzi Petrochemical’s chemical plant reduced the fuel gas consumption per ton of product by 41% by introducing acidic gas, thereby saving 450,000 yuan in costs related to sulfuric acid purchases.   In the past, during maintenance of the acid standby unit in the plant, the alkylation unit had to purchase new sulfuric acid externally to maintain production. To address this issue, Yangzi Petrochemical introduced some acidic gases from the company’s pipeline system into the sulfuric acid production unit, thereby producing a portion of new sulfuric acid in advance and storing it. During the introduction of acidic gases, the company closely monitored the current fluctuation data of the electrostatic mist eliminator, adjusted relevant parameters in a timely manner, and optimized the system to ensure stable production.