摘要: The propylene products produced by Sinochem Energy Zhenghe Group Co. Ltd. follow the standard of "GB / T 7716—2014 polymerized propylene", and the control methanol content is not higher than 10 μg/g. In January 2023, the methanol content in propylene products is excessive, the methanol content excessive cause is analyzed and it is found out that the source of methanol is the deodorant solution of desulfurization unit.By replacing the additives, adjusting the propylene tower process parameters, the problem of excessive methanol content in propylene is solved.