Suspension bed hydrogenation process method

Abstract

The invention provides a suspension bed hydrogenation process method. A disc-type oil collector is arranged in the middle upper part of a suspension bed hydrogenation reactor; the oil collector divides the reactor into an upper stable separation region and a lower suspension bed hydrogenation reaction region; and all or part of raw material oil enters the upper stable separation region in the reactor and is mixed with a material which enters the stable separation region through an oil collector chimney-like logistic passage from the suspension bed hydrogenation reaction region in the lower part of the reactor, a gas phase obtained after gas-liquid separation is discharged out from the top of the reactor, a liquid phase obtained after gas-liquid separation is discharged out of the reactor from the stable separation region, and the liquid discharged from the reactor is fractioned, a light fraction is separated, and a left heavy fraction is mixed with hydrogen to enter the hydrogenation reaction area of the reactor. In the method, the suspension bed hydrogenation reactor and a high-pressure separator are integrated into a whole, and raw material oil is used for cooling and stabilizing residual oil for suspension bed hydrogenation, so coking is effectively avoided and the long time running of a suspension bed hydrogenation can be guaranteed.

Description

technical field [0001] The invention relates to a suspension bed hydrogenation process, in particular to a suspension bed hydrogenation process which simplifies the process flow and improves operation stability. Background technique [0002] Due to the increasing shortage of petroleum resources and the increasingly serious trend of heavy oil, it has become an important task for oil refiners to obtain the largest amount of light oil products, so people are increasingly researching heavy oil processing. [0003] Suspension bed hydrogenation process of residual oil is one of the ideal methods for lightening residual oil. The process is generally as follows: the dispersed catalyst is uniformly mixed with the raw material oil to obtain the mixed raw material, and then the mixed raw material enters the empty cylinder reactor together with a large amount of hydrogen (the reactor can also have simple internal components, such as thermocouple tubes and distribution plates etc.), and...

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