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A method has been developed to determine the boiling point distribution of sulfur compounds in light cycle oils (LCO'S). The method chosen for this analysis was GC with a flame photometric detector (FPD) and pyrolyzer. Tests were carried out to evaluate the recovery efficiency, repeatability, and accuracy of the method. Repeatabilities within 2% were obtained. The recovery of benzothiophenes and dibenzothiophenes was close to 100%; this was important because these are the major sulfur components in LCO's. No hydrocarbon or solvent interferences were observed with the use of the pyrolyzer, even for a 95% solvent level. Comparison with results from other techniques showed that the method accurately determined the levels of sulfur compounds in the LCO boiling point range. 相似文献
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利用热丝裂解器进行实验研究时,其裂解温度是裂解实验不确定度的主要来源。热丝在长时间的使用过程中,热丝平衡温度会发生变化,容易引起裂解产物的不确定性,降低实验结果的可信度。因此,为了解热丝裂解器的使用规律,确保实验精确度,定期对热丝温度进行校准是提高实验质量的重要 相似文献
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