A sulfurized hydrogenation catalyst composition and its preparation method

Abstract

The invention discloses a sulfurized hydrogenation catalyst composition and a preparation method thereof. The catalyst composition comprises an oxidation state catalyst, an organic sulfide, an organic compound and hydrazine hydrate. The preparation method is to simultaneously introduce organic compounds, organic sulfides and hydrazine hydrate onto the catalyst, or introduce them step by step onto the catalyst, and include at least one low-temperature heat treatment step in the process of introducing organic compounds, organic sulfides and hydrazine hydrate and do not Including a roasting step. When the catalyst composition is applied, it can not only ensure the complete vulcanization, but also solve the airtight problem of the device.

Description

technical field [0001] The invention relates to a hydrogenation catalyst and a preparation method thereof, in particular to a sulfurized hydrogenation catalyst composition and a preparation method thereof. Background technique [0002] In recent years, the trend of inferior crude oil has become increasingly obvious, while the demand for clean fuels in various countries is increasing. Hydrogenation technology is one of the most effective means of producing clean fuels, and its efficient hydrogenation catalyst has become the key technology of hydrogenation technology. The active metals of conventional hydrogenation catalysts are in the oxidized state, but the active substances are in the sulfided state in actual use, so they need to be sulfided in the reactor before use. [0003] The commonly used presulfurization methods include in-vehicle presulfurization and external presulfurization. The in-vessel presulfurization is to put the catalyst in the oxidized state into the hydro...

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Problems solved by technology

However, in the process of industrial application, the existing technology also exposed some problems. Due to the limitation of the reactor material of the hydrogenation device and the consideration of production safety, the high-pressure airtightness of the device needs to be carried out at a temperature above 135 ° C, and the external Whether it is organic sulfide or solid sulfur on the presulfurized catalyst, the former enters the circulating hydrogen before the airtightness because of its low boiling point. Once the airtightness fails to be vented, it will lead to insufficient sulfidation agent and affect the sulfidation effect of the catalyst.

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