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Interlock commissioning work for the methanol conversion and synthesis units at Yueneng Chemical completed. Author/Source: Yueneng Chemical. Date: 2020-12-02. Clicks: 26. On December 1st, with the concerted efforts of the interlock commissioning team for the methanol production units, the system manufacturers, and the patent holders of the process technologies, Yueneng Chemical managed to complete the joint commissioning of the DCS and SIS instruments in the methane conversion and methanol synthesis units in just 9 days. This achievement secured valuable time for starting up the methanol production units on a trial basis, and it also laid a solid foundation for their safe and high-quality operation once they are put into use. It is understood that the conversion and synthesis process at the methanol plant utilizes Zhejiang Xuanshin Wanfeng’s first-stage steam conversion technology as well as DPT low-pressure synthesis technology, with a total of 125 instrument interlocks designed for this process. Before the interlock commissioning, the methanol center took overall coordination; the persons in charge of the conversion and synthesis units actively coordinated various parties, organized the efforts carefully, and jointly developed a commissioning plan for the SIS/DCS systems of conversion and synthesis, At the same time establishing a joint commissioning team. Since November, temperatures have dropped sharply, posing significant challenges to the coordination efforts. With low temperatures at night, the instrument calibration team worked tirelessly to ensure the successful completion of the plant’s process trial run from the first attempt. Every member of the team strived hard, racing against time and staying focused on the target date for commissioning. Overcoming various objective constraints, they successfully completed all tasks related to instrument interlock calibration, thereby demonstrating the excellent work ethic of the Methanol Center – its willingness to endure hardship and not shy away from hard work. At present, the successful completion of the joint commissioning of the instrument interlocks for the conversion and synthesis units in these improvement projects has greatly boosted the confidence of all employees at the Methanol Center to produce qualified methanol products on December 15th.