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

Abstract

The invention relates to a high-activity heavy petroleum fraction hydroprocessing catalyst and a preparing method thereof. A method of using silica-alumina composite oxide modified by titanium as a carrier to prepare the catalyst is put forward, meso-porous silicon composite oxide prepared through a coprecipitation method is regarded as a substrate material, a synchronous method or a fractional step method is adopted to introduce titanium oxide, or titanium sulfate, or titanium tetrachloride, or N-propyl titanium, or isopropyl titanate or Tetraisobutyl Orthotitanate and the like into the silica-alumina composite oxide, so that a titanium-modified carrier which has a large specific area and a large pore volume is obtained, wherein the specific area of the carrier is 200-310 m<2> / g, and the pore volume is 0.5-1.2 ml / g. A solution impregnation technology is adopted in support of metal active components on the carrier, and the heavy petroleum fraction hydroprocessing catalyst has good hydro-desulfurization and hydro-denitrification activities in heavy petroleum fraction.

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.