【Q&A Question 016】2016.05.06
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【Q&A Question 016】May 06, 2016: What are the various methods of catalyst sulfidation? The answer key will be available after responding; scoring is based on answering the key points. Dry vulcanization, Wet vulcanization.
Catalyst presulfurization can be divided into wet sulfurization and dry sulfurization
Catalyst presulfurization can be divided into wet sulfurization and dry sulfurization. Wet sulfiding is a pre-sulfidization process that uses distillate oils containing sulfides in liquid or semi-liquid states in the presence of hydrogen ； The wet sulfidation method is further divided into two types: one involves the use of externally added sulfides as the sulfur required for the catalyst sulfidation process, while the other relies on the sulfur present in the sulfurized oil itself for pre-sulfidation. Series and parallel vulcanization
Catalyst presulfurization can be divided into wet sulfurization and dry sulfurization. Wet sulfiding is a pre-sulfidization process that uses distillate oils containing sulfides in liquid or semi-liquid states in the presence of hydrogen ； The wet sulfidation method is further divided into two types: one involves the use of externally added sulfides as the sulfur required for the catalyst sulfidation process, while the other relies on the sulfur present in the sulfurized oil itself for pre-sulfidation. Dry sulfiding is a process in which sulfidation is carried out directly in the presence of hydrogen, either by using H2S at a certain concentration or by injecting organic sulfides into the circulating oxygen.
Wet vulcanization is a pre-vulcanization process that takes place in a liquid or semi-liquid state, using distillate oils containing sulfides in the presence of hydrogen； Wet vulcanization is further divided into two types: in one type, the sulfur required for the catalyst vulcanization process is supplied from externally added sulfides, while in the other type, pre-vulcanization is carried out using the sulfur present in the sulfurized oil itself. Dry vulcanization involves vulcanization directly in the presence of hydrogen, either by using H2S at a certain concentration or by injecting organic sulfides into the circulating oxygen.