Sulfide catalyst for hydrogenation desulfurization and denitrogenation and its preparation process and use

Abstract

The preparation method for HDSN sulfide catalyst comprises: mixing element precursor from VIB and VIII family with S-contained precursor, adding reducer to produce the sulfide contained VIB and VIII elements at given temperature; separating nano particle from reaction system, drying, and hot processing in inert / sulfidization atmosphere. This product has activity 4-5 times than the industrial product.

Description

technical field [0001] The invention relates to an ultra-high activity hydrogenation desulfurization nanometer sulfide catalyst. [0002] The present invention also relates to a method for preparing the above-mentioned catalyst. [0003] The invention also relates to the use of the catalysts described above. Background technique [0004] Ultra-deep desulfurization of fuel oil has become an important research topic to be solved worldwide. Countries such as Europe and the United States have enacted more stringent environmental laws and regulations, and before 2006, the ultra-low sulfur diesel standard of less than 15ppm will be implemented. However, it is difficult to desulfurize diesel to an ultra-low sulfur level of less than 15 ppm using existing hydrodesulfurization catalysts. At present, a lot of research work has been done on improving the activity of existing hydrodesulfurization catalysts, mainly focusing on using new supports, adding new active components or additi...

AI Technical Summary

Problems solved by technology

[0008] From the analysis of the above two documents, it is not difficult to find that the synthesis methods of the existing nano-sulfide catalysts still have the following points to be improved: (1) the use of toxic carbonyl compounds as active components and auxiliary agent precursors is not environmentally friendly Friendly; (2) The cost of catalyst synthesis is high; (3) The ultrasonic process is not easy to realize large-scale industrialization; (4) The thermal stability of the prepared nano-sulfide catalyst is poor; (5) The catalyst activity needs to be further improved; (6) Using Thiophene and dibenzothiophene as model molecules cannot represent the properties of real diesel, because the most difficult sulfur-containing molecule in diesel is 4,6-dimethyldibenzothiophene; (7) Nano-sulfide is used to add The research on the reaction of hydrogen denitrogenation has not been reported yet