Halogen-containing heavy oil hydrogenation catalyst, preparation method thereof and heavy oil hydrotreating method

Abstract

The invention relates to the field of heavy oil hydrogenation, and discloses a halogen-containing heavy oil hydrogenation catalyst, a preparation method thereof and a heavy oil hydrotreating method. The catalyst contains an alumina carrier with a bimodal pore structure and hydrogenation active metal loaded on the carrier, the carrier contains phosphorus and halogen elements, and by taking the weight of the carrier as a reference, the content of phosphorus in terms of P2O5 is 0.1-8.0 wt%, and the content of halogen in terms of elements is 0.1-6 wt%; characterized by a mercury intrusion method, the first pore distribution of the carrier is mesopores of 3-100 nm, the pore volume V mesopores is 1.0-1.5 mL / g, the second pore distribution of the carrier is macropores of 100-5000 nm, the pore volume V macropores is 1.0-1.8 mL / g, and the total pore volume V total is 2.0-3.3 mL / g. The catalyst is used in the heavy oil hydrotreating process and has good hydrotreating performance.

Description

technical field [0001] The invention relates to the field of heavy oil hydrogenation, in particular to a halogen-containing heavy oil hydrogenation catalyst, a preparation method thereof and a heavy oil hydrogenation treatment method. Background technique [0002] Alumina, especially γ-alumina, is often used as a carrier for the preparation of catalysts because of its good pore structure, specific surface area and thermal stability. In particular, the pore structure of the alumina support is particularly critical to the catalyst performance. The raw material of the alumina carrier is generally pseudo-boehmite. Various methods for preparing phosphorus-containing pseudo-boehmite have been disclosed in the prior art. In terms of controlling the pore distribution and pore volume of alumina by different methods, the prior art The properties of the described pseudo-boehmite and alumina are excellent in some respects, but it is difficult to obtain phosphorus-containing oxides with...

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Problems solved by technology

The raw material of the alumina carrier is generally pseudo-boehmite. Various methods for preparing phosphorus-containing pseudo-boehmite have been disclosed in the prior art. In terms of controlling the pore distribution and pore volume of alumina by different methods, the prior art The properties of the described pseudo-boehmite and alumina are excellent in some respects, but it is difficult to obtain phosphorus-containing oxides with bimodal pores and large pore volumes and total pore volumes in both pore distributions. aluminum

[0003] At present, with the intensification of the trend of crude oil becoming heavier and inferior, the difficulty of crude oil processing has increased, and higher requirements have been put forward for catalysts for crude oil processing. Further improve

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