A kind of heavy oil hydrogenation conversion method
A heavy oil hydrogenation and hydrocracking technology, applied in hydrotreating process, petroleum industry, treatment of hydrocarbon oil, etc., can solve problems such as difficulty in achieving the upgrading effect, and achieve improved conversion rate of heavy oil, flexible operation, and conversion rate of heavy oil. high effect
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preparation example Construction
[0040] In the method provided by the present invention, the preparation method of the hydrothermal cracking catalyst comprises: contacting the metal source and the nonmetal source with a sulfidation agent in the presence of a solvent and under sulfidation reaction conditions to obtain the hydrothermal cracking catalyst. Wherein, the metal source is a substance containing V, Ni and lanthanide metal elements and / or Group VIB metal elements, the non-metal source is a substance containing carbon, and the metal source, non-metal source and vulcanizing agent The amount of the metal element contained in the solid product obtained after contacting contains 2-15% by weight of metal elements and 85-98% by weight of non-metallic elements, and based on the weight of the metal elements, the metal elements of more than 95% by weight are V, Ni and lanthanide metal elements and / or Group VIB metal elements; based on the weight of non-metal elements, more than 95% by weight of the non-metal elem...
Embodiment 1～7
[0064] Examples 1-7 illustrate the lightening effect of the heavy oil catalytic conversion method provided by the present invention. The coking tendency is measured by determining the content of toluene insoluble matter in the produced oil.
[0065]The residual oil raw material / residual oil, hydrogen, and hydrocracking tail oil are transported to the preheating furnace through the pump, preheated to a certain temperature and enter the first reaction zone for reaction, and the reaction products in the first reaction zone enter the separation unit D1, light, The heavy distillate oil is removed from the reaction system, and the residual oil components, catalyst, and hydrogen enter the second reaction zone, and the reaction products in the second reaction zone enter the separation unit D1 to separate light distillate oil, heavy distillate oil and tail oil, and part of the tail oil The rest of the tail oil is recycled back to the second reaction zone, and the tail oil dumped is dil...
Embodiment 3
[0069] Example 3 is that after the heavy oil raw material reacts in the first reaction zone of the hydrothermal cracking unit, the >420°C heavy fraction enters the second reaction zone for reaction, and the reaction product is separated to remove 2% of the >420°C heavy fraction in the product The solid-liquid separation process is carried out by external throwing, and the remaining heavy fraction is recycled back to the second reaction zone. The heavy distillate that is thrown out is subjected to solid-liquid separation, and the rich liquid component is recycled back to the second reaction zone, and the heavy distillate oil is hydrocracked and then the hydrogenated tail oil is recycled back to the first reaction zone. The result of this implementation method is that 500°C was 75.4%, the yield of light oil was >72%, and the yield of toluene insoluble matter was 0.7%. Compared with the results of the hydrothermal cracking reaction in the single reaction zone of Comparative Exampl...
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