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Heavy distillate oil hydrotreating catalyst and application thereof

A heavy distillate, hydrotreating technology, applied in physical/chemical process catalysts, hydrocarbon oil cracking, petroleum industry, etc., can solve problems such as low liquid yield, improve interaction, improve desulfurization, and reduce coke formation Effect

Active Publication Date: 2019-06-04
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst has high hydrodenitrogenation activity, but the disadvantage is that the liquid yield is low

Method used

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  • Heavy distillate oil hydrotreating catalyst and application thereof
  • Heavy distillate oil hydrotreating catalyst and application thereof
  • Heavy distillate oil hydrotreating catalyst and application thereof

Examples

Experimental program
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preparation example Construction

[0033] The invention provides a kind of mesoporous TiO suitable for processing petroleum heavy distillates 2 -Al 2 o 3 , alumina as a carrier material for hydrotreating catalysts, and provide the mesoporous TiO 2 -Al 2 o 3 method of preparation.

[0034] The present invention is characterized in that the mesoporous alumina is synthesized through template agent guidance, and at the same time, titania is introduced into the mesoporous alumina carrier. Mesoporous TiO 2 -Al 2 o 3 Precursors and alumina are used as composite supports. By adjusting the content of each support component, heavy oil hydrotreating catalyst supports with different titanium modifications, different surface areas and suitable acid distribution can be prepared.

[0035] The catalysis provided by the present invention includes an active component and a catalyst carrier, and the active component includes 10% to 40% of a VIB group metal oxide, 1% to 20% of a VIII group metal oxide and / or by weight perc...

Embodiment 1

[0049] Example 1 Template-directed synthesis of mesoporous TiO 2 -Al 2 o 3 TA-1

[0050] (1) 230 gram pseudo-boehmite is joined in 200ml water and stirred and beaten, the nitric acid solution of the 1mol / L of 300ml is added dropwise, obtains the pseudo-boehmite suspension of acidification, the pH of regulating glue solution is 4;

[0051] (2) Add ammonia water to the mixture of step (1) to adjust the pH of the reaction system to be 9, then add 7 g of template agent cetyltrimethylammonium bromide (CTABr), and stir and react in a water bath at 45 ° C for 0.5 h , template agent: A1 3+ The molar ratio is 0.006;

[0052] (3) Add 20 g of ethanol to the mixture obtained in step (2), react for 0.5 h, then add 200 g of butyl titanate, react for 0.5 h, and then transfer to a crystallization tank for aging for 15 h.

[0053] (4) Suction filter the mixture obtained in step (3), and then dry the filter cake at 120°C for 4 hours to obtain mesoporous TiO 2 -Al 2 o 3 Precursor.

Embodiment 2

[0054] Example 2 Template-directed synthesis of mesoporous TiO 2 -Al 2 o 3 TA-2

[0055] (1) 300 grams of pseudo-boehmite are added into 200ml of water and stirred for beating, and the nitric acid solution of 1 mol / L of 300ml is added dropwise to obtain acidified pseudo-boehmite suspension, and the pH of the glue solution is adjusted to be 4 ;

[0056] (2) Add ammonia water to the mixture of step (1) to adjust the pH of the reaction system to be 9, then add 10 g of template agent cetyltrimethylammonium chloride (CTACl), and stir the reaction in a water bath at 40-50°C 0.5h, templating agent: A1 3+ The molar ratio is 0.0067;

[0057] (3) Add 20 g of ethanol to the mixture obtained in step (2), react for 0.5 h, then add 200 g of butyl titanate, react for 0.5 h, and then transfer to a crystallization tank for aging for 15 h.

[0058] (4) Suction filter the mixture obtained in step (3), and then dry the filter cake at 120°C for 4 hours to obtain mesoporous TiO 2 -Al 2 o 3...

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Abstract

The invention discloses a heavy distillate oil hydrotreating catalyst and an application thereof. The catalyst comprises an active component and a catalyst carrier, and the active component comprises10-40 wt% of group VIB metal oxide, 1-20 wt% of group VIII metal oxide and / or 0.1-10 wt% of group VA oxide; and the catalyst carrier comprises 10-50 wt% of mesoporous TiO2-Al2O3, 30-80 wt% of alumina,5-25 wt% of a binder and 1-5 wt% of an extrusion assistant. A mesoporous alumina precursor is prepared by a template-guided process, and titanium oxide, titanium isopropoxide or butyl titanate is introduced into the precursor solution to obtain the titanium-modified mesoporous alumina carrier having a large specific surface area and a large pore volume. The catalyst has good hydrodesulfurizationand hydrodenitrogenation activity for heavy petroleum fractions.

Description

technical field [0001] The present invention relates to a kind of mesoporous TiO 2 -Al 2 o 3 , Aluminum oxide as a catalyst for heavy petroleum distillate hydrotreating as a composite carrier. 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 dispersibility of the catalyst, which is beneficial to the diffusion of molecules during the reaction process; the carrier material also ...

Claims

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Application Information

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IPC IPC(8): B01J27/19B01J35/10C10G47/12
Inventor 吴显军王刚倪术荣徐伟池李凤铉靳丽丽夏恩冬王锐张全国李实马守涛张浩张铁珍郭淑芝郭立艳高晓宇李亮亮赵枫郭立国
Owner PETROCHINA CO LTD
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