Hydrogenation activity protection catalyst and preparation and application thereof

Abstract

The invention relates to a hydrogenation activity protection catalyst and preparation and application thereof. The hydrogenation activity protection catalyst comprises a carrier and a hydrogenation activity metal component, wherein the carrier is bimodal-pore-size-distribution aluminum oxide containing an group-IVB metal component; through characterization by mercury intrusion porosimetry, the carrier is 0.95-1.2ml / g in pore volume and 50-300m<2> / g in specific surface area; the pore volume of pores which are 10-30 nanometers in diameter accounts for 55-80 percent of a total pore volume; the pore volume of pores which are 300-500 nanometers in diameter accounts for 10-35 percent of the total pore volume; the hydrogenation activity metal component is selected from at least one group-VIII metal component and at least one group-VB metal component; and in terms of oxide and based on the catalyst, the content of the group-VIII metal component is greater than 0 and smaller than or equal to 0.8 percent by weight, and the content of the group-IVB metal component is greater than 0 and smaller than or equal to 5 percent by weight. Compared with the prior art, the hydrogenation activity protection catalyst provided by the invention has higher hydrodemetallization activity.

Description

technical field [0001] The invention relates to a hydrogenation active protection catalyst and its preparation and application. Background technique [0002] As crude oil becomes heavier and inferior, the difficulty of crude oil processing increases, and the yield of light oil products decreases. However, the market demand for high-quality light oil products continues to increase, and environmental protection regulations are becoming more and more inclusive. strict. At present, the processing and full utilization of heavy oil, especially residual oil, is becoming a major topic of concern in the global oil refining industry, and residual oil hydrogenation technology is a widely used processing technology in heavy oil processing technology, and is recognized as an economical and environmentally friendly deep processing technology . Residual oil contains a large amount of metal impurities such as Ni, V, Fe, Ca and solid impurities. If these impurities cannot be effectively re...

AI Technical Summary

Problems solved by technology

Residual oil contains a large amount of metal impurities such as Ni, V, Fe, Ca and solid impurities. If these impurities cannot be effectively removed, it will have an adverse effect on the downstream hydrogenation catalyst and easily deactivate the downstream catalyst.

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