A kind of heavy oil hydrogenation catalyst and preparation method thereof

Abstract

The invention discloses a heavy oil hydrogenation catalyst and a preparation method thereof. The heavy oil hydrogenation catalyst comprises a carrier and an active ingredient; the carrier is aluminum oxide, and is prepared from pseudo-boehmite with dry basis content below 50% via moulding; the active ingredient are metals selected form family VIII, Co or Ni, and / or family VI B, Mo or W. The preparation method comprises following steps: preparation of pseudo-boehmite, preparation of the carrier, and loading of the active ingredient. The heavy oil hydrogenation catalyst is capable of maintaining high demetalization, desulphurization, and carbon residue removing activities, simplifying drying process of pseudo-boehmite preparation, avoiding dust pollution caused by moulding process, increasing production efficiency, reducing production energy consumption, and reducing catalyst cost further.

Description

technical field [0001] The invention relates to a heavy oil hydrogenation catalyst and a preparation method thereof. Background technique [0002] As the world's crude oil gradually becomes heavier and worse, and the market demand for light oil products, especially high-quality clean light oil products, grows rapidly, hydrogenation technology has received special attention worldwide. For example, hydrorefining of various light distillate oils, hydrotreating of heavy oils, etc. [0003] Heavy oil is the most complex part of crude oil, which contains more metals (Fe, Ca, Na, Ni, V, etc.), sulfur, nitrogen and other non-ideal components (colloid, asphaltenes). In the process of heavy oil hydrotreating, these impurities are deposited on the catalyst, causing permanent poisoning of the catalyst, and more seriously, blocking the catalyst bed, resulting in frequent replacement of the catalyst. One of the keys to heavy oil hydroprocessing technology is to develop catalysts with ex...

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Problems solved by technology

[0009] In the above-mentioned prior art, the pseudo-boehmite (a specific form of aluminum hydroxide) used is a powder product, and the dry basis content of alumina in the pseudo-boehmite is about 70%, and the water contained is generally Crystal water (the content on a dry basis is the mass percentage of the alumina solid obtained when the pseudo-boehmite is heated to an anhydrous state in the mass percentage of the pseudo-boehmite, the same below), not only requires a long drying time in the preparation process, but also produces Low efficiency and high energy consumption; and it is easy to cause dust pollution during the molding process, which affects the environment and endangers people's health