A kind of heavy petroleum distillate hydrogenation treatment catalyst and preparation method thereof

Abstract

The invention relates to a highly active heavy petroleum fraction hydrotreating catalyst and a preparation method thereof. It proposes a method for preparing a catalyst using titanium-modified silicon-aluminum composite oxide as a carrier, in which mesoporous silicon prepared by a co-precipitation method is used. Aluminum composite oxide is the matrix material, and titanium oxide, titanium sulfate, titanium tetrachloride, titanium n-propoxide, titanium isopropoxide, or Isobutyl titanate, etc., to obtain a titanium modified carrier with a large specific surface area and pore volume. The specific surface area of ​​the carrier is 200~310m 2 / g, pore volume is 0.5~1.2ml / g. The metal active components are loaded on the carrier using solution impregnation technology. The catalyst of the invention has good hydrodesulfurization and hydrodenitrification activities for heavy petroleum fractions.

Description

technical field [0001] The present invention relates to a heavy petroleum distillate hydrotreating catalyst with a silicon-aluminum composite oxide (ASA) as a carrier, in particular to a heavy petroleum distillate hydrotreating catalyst with a titanium-modified silicon-aluminum composite oxide as a carrier and its Preparation. Background technique [0002] With the intensification of the trend of heavy and inferior crude oil in the world, the proportion of inferior heavy oil continues to increase, and it is more important to effectively process heavy distillate oil, and hydrotreating is the most effective processing of heavy distillate oil One of the techniques. [0003] The key to hydroprocessing technology is the catalyst, and the basis for improving the performance of the catalyst is the development of new catalytic materials. As we all know, the carrier material needs to have a large specific surface area, pore volume and pore size to increase the metal loading and dis...

AI Technical Summary

Problems solved by technology

However, the unit cell constant of the catalyst is small, and the rare earth, clay and molecular sieve are modified by binder, which is easy to block some pores, which is not conducive to the loading of active metals.