Hydroprocessing technique

Abstract

The present invention relates to hydrocarbon hydrotreating process including the steps of loading catalyst into the reactor, activating, reaction, etc. The hydrotreating catalyst contains thiourea compound in 0.5-20 wt% of the catalyst, simple substance sulfur in the amount of 30-150 % of the theoretical sulfur demand of the catalyst, and organic solvent in 0.1-50 wt% of the catalyst. The hydrotreating catalyst with the common action of thiourea compound, sulfur and organic solvent has high sulfur holding rate in activation, less concentrated heat release, lowered temperature rise in the catalyst bed and high activity. It may be applied in various kinds of hydrocarbon hydrotreating process.

Description

technical field [0001] The invention relates to a hydrogenation treatment process, in particular to a hydrocarbon hydrogenation treatment process for hydrocarbon raw materials such as impurity removal and upgrading. Background technique [0002] The hydrotreating process generally includes hydrofining and hydroupgrading processes. Generally, in the presence of hydrogen, using a suitable reactor form, under certain operating conditions, the hydrocarbon feedstock and hydrogen are contacted with the hydrotreating catalyst. . Hydrotreating catalysts generally use refractory oxides such as alumina, silicon aluminum, and molecular sieves as carriers, and one or more active metal components such as molybdenum, tungsten, cobalt, and nickel, and sometimes phosphorus, silicon, etc. , fluorine, titanium, zirconium, boron and other auxiliary components. Generally, the metal component of the catalyst obtained in the production process exists in an oxidized state, while in the hydrogena...

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Problems solved by technology

CN1400056A Coat the pre-sulfurized catalyst containing sulfidation agent with oxygen-containing organic matter containing at least 16 carbon atoms, treat it above 175°C for a period of time, and then activate it with hydrogen to reduce the self-heating problem of the catalyst, but it cannot completely solve the sulfidation state The self-heating problem of the catalyst, and the storage, transportation and loading of the catalyst still have certain problems

In the above-mentioned patents, there is either the problem of self-heating of the catalyst, or the problems of storage, transportation and loading of the catalyst, and there is a problem of low production efficiency in the production of the catalyst, which has an adverse effect on the application of the hydroprocessing process.

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