真硫化态加氢催化剂钝化技术及工业应用

PASSIVATION TECHNOLOGY OF TRUE SULFIDED HYDROTREATING CATALYST AND ITS COMMERCIAL APPLICATION

针对真硫化态加氢催化剂在空气环境中容易自热的问题,考察了钝化处理对真硫化态加氢催化剂抗氧化能力的提升效果。分别采用扫描电镜、X射线光电子能谱、显微图像分析和自热分析等对钝化处理前后的真硫化态加氢催化剂样品进行了表征。结果表明,钝化处理可以在催化剂的外表面形成一层致密的有机膜,有效阻隔氧气与催化剂上的活性金属接触,使得真硫化态加氢催化剂的抗氧能力显著提升,而且钝化处理不会影响催化剂的活性;通过钝化技术生产的真硫化态加氢催化剂完成首次工业应用,为工业装置的催化剂装填和开工过程带来便利,同时提升了真硫化态催化剂使用的安全性。

In view of the problem that the true sulfided hydrotreating catalyst is easy to self-heating in air environment,the passivation technology of the true sulfided hydrotreating catalyst was developed,and the enhancement effect of the passivation treatment on the antioxidant capacity of the true sulfided hydrotreating catalyst was investigated.Scanning electron microscopy,X-ray photoelectron spectroscopy,sulfur content analysis,microscopic image analysis and self-heating analysis were used to characterize the true sulfided hydrotreating catalyst samples before and after passivation treatment.The results showed that the passivation treatment could form a dense organic film on the outer surface of the catalyst,effectively blocking the contact between oxygen and the active metal on the catalyst,the oxidation resistance of the true sulfided hydrotreating catalyst was significantly enhanced,and the passivation treatment did not affect the activity of the catalyst.The first application of true sulfided hydrotreating catalyst produced after passivation treatment has been completed,which facilitates the catalyst loading and start-up process of industrial plants.At the same time,the safety of the use of the true sulfided catalyst is improved.