Low hydrogen-oil ratio hydrotreating method and reactor

Abstract

The invention discloses a low hydrogen-oil ratio hydrotreating method and a reactor. Hydrogen is directly transported to the top space of the reactor, a liquid distributor is arranged at the inner top of the reactor, the liquid distributor consists of an upper hollow disc structure and at least one Venturi ejector communicated with the hollow disc, and raw oil is directly transported into the hollow disc of the liquid distributor through a pipeline, enters the Venturi ejector through the hollow disc, is sprayed as vaporous fluid at an outlet of the Venturi ejector to be dispersed in gas, then flows downwards and is hydrotreated through a catalyst bed layer. With the hydrotreating method and the reactor disclosed by the invention, the reaction hydrogen-oil ratio can be reduced, the use efficiency of the hydrogen is improved, a good hydrogenation environment is provided, and simultaneously the utilization ratio of catalysts and reactor volume is improved.

Description

technical field [0001] The invention relates to a low hydrogen-to-oil ratio fixed-bed hydrogenation treatment method and a reactor, in particular to a process method and a reactor for improving hydrogen utilization efficiency and reducing the hydrogen-to-oil ratio in the fixed-bed hydrogenation process. Background technique [0002] The conventional fixed-bed hydrogenation process is the most economical and effective method for removing impurities such as sulfur and nitrogen in raw oil. In the operation of fixed-bed hydrogenation units, higher hydrogen-to-oil ratio and hydrogen partial pressure are often used to ensure catalyst activity and promote hydrodesulfurization, denitrogenation, aromatics saturation and cracking reactions. However, the high-pressure hydrogen circulation system requires high investment and operating costs, which indirectly increases the production cost of oil products. If the hydrogen flow rate in the hydrotreating process can be reduced, it can save...

AI Technical Summary

Problems solved by technology

Although the liquid phase can be further crushed, the atomization of the liquid phase cannot be achieved, and the effect of hydrogen dissolution needs to be further improved

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