Dipping solution and preparing method thereof

Abstract

An impregnating solution for preparing hydrocatalyst contains at least two metal components in VIB family and at least one metal component in VIII family. It is prepared through dissolving a water-soluble Mo-contained compound in water, and adding organic carboxylic acid, the compound containing metal in VIB family and the salt containing metal in VIII family. Its advantages are high stability and no irritative volatile component.

Description

technical field [0001] The present invention relates to an impregnation solution and its preparation method, in particular to the impregnation solution used in the preparation of hydrorefining and hydrotreating catalysts and its preparation method, especially the tungsten, molybdenum, nickel (or cobalt) mixed impregnation solution and its preparation method. The solution of the invention can be used for the preparation of hydrogenation catalysts for petroleum fractions and heavy oils, especially for the preparation of paraffin hydrofinishing and residual oil hydrogenation catalysts. Background technique [0002] As we all know, the hydrorefining and hydrotreating catalysts currently used in industry are usually based on inorganic oxides such as alumina as a carrier, loaded with hydrogenation active metals (generally VIB group and VIII group elements, such as Mo, W and Co, Ni, etc.) prepared. Impregnation method is a commonly used loading method for hydrogenation active com...

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Problems solved by technology

The preparation of the solution in the two patents uses heating at 90°C to 120°C to dissolve the metal components, and the dissolution time ranges from 0.5 hours to 6.0 hours. Due to the use of additional heating, not only energy consumption and equipment investment are increased, but also The operation steps are omitted, and the operation is cumbersome, and the preparation time is long, which increases the manufacturing cost of the catalyst

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