Hydrofining catalyst combined filling method
A technology for hydrorefining and catalyst, which is applied in the fields of hydrotreating process, petroleum industry, processing of hydrocarbon oil, etc., can solve the problems that the catalyst is difficult to meet the reaction needs at the same time, cannot fully meet the requirements, and the reaction conditions are different, so as to achieve a good comprehensive Effectiveness of performance, reduced hydrogen consumption, high reactivity
Active Publication Date: 2014-12-31
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
In the hydrogenation reactor, from top to bottom, different reaction conditions, different reaction environments, and different types of chemical reactions are carried out. In this case, it is usually difficult for a single catalyst to meet the reactions of different reaction areas in the reactor at the same time. need
Using these catalysts alone often cannot fully meet the requirements in actual production
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1～3
[0030] According to the method of the present invention, different catalysts are selected for grading and used for hydrogenation treatment of diesel raw material. The catalyst gradation system selected for use in Examples 1 to 3 is as follows
[0031] first reaction zone second reaction zone third reaction fourth reaction metal composition Mo-Ni Mo-Co Mo-Ni Mo-Co Metal content, wt% 8 14 32 22 shape Raschig ring clover clover clover carrier Al 2 o 3 Silica Aluminum Oxide TiO 2- Al 2 o 3 Al 2 o 3 Total acid content, mmol / g 0.20 0.50 2.0 0.7 Strong acid content, mmol / g 0.03 0.04 0.21 0.05 Proportion,% 10 20 40 30
[0032] first reaction zone second reaction zone third reaction zone Fourth reaction zone metal composition Mo-Ni Mo-Co Mo-Ni Mo-Co Metal content, % 8 14 32 22 shape Raschig ring clover clover clover carrie...
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Abstract
The invention discloses a hydrofining catalyst combined filling method. According to the method, after the raw material diesel oil and hydrogen are mixed, the mixture passes through four hydrogenation reaction zones in order, and different reaction zones are respectively filled with hydrofining catalysts having different metal content and acid amounts. The reaction effluent is subjected to separation and fractionation so as to obtain a diesel oil product. The invention adopts a grading filling method for different catalysts, can give full play to the respective advantages of different types of catalysts, thus endowing the catalyst grading filling system with higher reaction activity, stability and lower reaction hydrogen consumption on the whole. The method provided in the invention is especially suitable for the hydrofining process of coking diesel oil or catalytic cracking diesel oil.
Description
technical field [0001] The invention relates to a combined filling method of a hydrorefining catalyst, in particular to a combined filling method of a diesel oil advanced hydrofining catalyst. Background technique [0002] With the improvement of people's awareness of environmental protection and the increasingly stringent environmental regulations, the production and use of clean vehicle fuels has increasingly become a development trend. As for the cleanliness of diesel oil, desulfurization and dearomatization are the key to cleanliness. [0003] At present, in the desulfurization and dearomatization technology of diesel oil, hydroprocessing technology is still the main and most effective technical means. In the hydrogenation reactor, from top to bottom, different reaction conditions, different reaction environments, and different types of chemical reactions are carried out. In this case, it is usually difficult for a single catalyst to meet the reactions of different reac...
Claims
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IPC IPC(8): C10G67/02
Inventor 柳伟王珂琦刘继华李扬宋永一牛世坤李士才徐大海丁贺赵桂芳
Owner CHINA PETROLEUM & CHEM CORP