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Progress is smooth in the catalyst replacement for the synthesis system of Tianhua’s dual-methane plant. Author/Source: Tianhua. Date: 2021-12-03. Clicks: 7. On December 2, the catalyst replacement in the synthesis system of the dual-methane plant progressed well; currently, an external contractor is responsible for removing the old catalyst, and it is expected that this task will be completed by today. The dimethyl apparatus synthesis system is an important facility for methanol synthesis; its catalyst has reached the end of its useful life, which severely hinders the stable, continuous, and efficient operation of the facility. It will be replaced during this major maintenance. The rate at which the catalyst becomes deactivated directly affects the progress of this project. In response to this issue, the workshop sets strict control parameters; based on the analysis results of oxygen and hydrogen levels at the inlet and outlet every hour, the amount of air supplied is adjusted, and the temperature is tightly controlled. Additionally, party member task forces and young volunteers are organized to provide supervision and support for the catalyst replacement process. With the close cooperation of Shuangjia employees and related units, the catalyst passivation was successfully completed on December 1. The unloading of the original catalyst began at 4 p.m. on the same day, 18 hours earlier than originally planned.