统计过程控制方法在费托合成中试运转中的应用

统计过程控制是一种采用统计技术对过程数据进行分析和控制的方法,为了提高费托合成过程关键技术指标的稳定性和过程能力,将这一方法应用到了该过程当中。以产油量100 t/a规模的费托合成中试过程为应用场景,对已经完成的试验过程参数进行控制图分析,发现并消除过程中引起参数异常波动的特殊原因。过程参数达到统计受控状态后,过程的关键技术指标稳定性和过程能力都会提高,消除异常波动后的试验结果也更加准确可信。同时,分析获得的过程参数统计受控范围也可以作为相同条件后续试验过程的参数控制限。该方法的应用对于费托中试过程异常波动的发现、消除和过程稳定性、能力的提高具有一定的指导作用。

Application of Statistical Process Control in the Pilot Test of Fischer-Tropsch Synthesis

Statistical process control(SPC)is a theory to analyze and control process data with statistical method.It is applied in Fischer-Tropsch(F-T)synthesis process to improve the stability of critical technical targets and process capability in this paper.Process parameters are analyzed with“control chart”in a 100t/a oil production scale F-T synthesis pilot test process to find and remove the special cause of abnormal variation.The stability of critical technical targets and process capability are improved with the condition of process parameters under control.And the test result is more accurate by removing abnormal variation as well.The control range of process parameters can be also used in later process of same condition.The method can be used to find and remove abnormal variation of the process as well as improve process stability and capability.