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Method for preparing heavy distillate hydrotreating catalyst

An acid treatment and catalytic material technology, applied in molecular sieve catalysts, physical/chemical process catalysts, catalyst carriers, etc., can solve the problems of poor pore connectivity, poor carrier mixing uniformity, and small mesoporous ratio, and improve the dispersibility. The effect of catalyst activity, good connectivity and openness, and large pore volume

Active Publication Date: 2012-09-05
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This composite method is characterized by simplicity and ease, and is a commonly used industrial preparation method, but it also has disadvantages such as poor carrier mixing uniformity, poor channel connectivity, and small mesopore ratio.

Method used

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  • Method for preparing heavy distillate hydrotreating catalyst
  • Method for preparing heavy distillate hydrotreating catalyst

Examples

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preparation example Construction

[0038] The preparation method of the composite catalytic material provided by the invention and the preparation method of the heavy distillate oil hydrotreating catalyst can be carried out according to the following specific steps:

[0039] (1), the Y-type molecular sieve is converted into a hydrogen-type Y-type molecular sieve by an ion exchange method, and roasted at 500° C. for 3-6 hours in an air atmosphere;

[0040] (2) Pretreatment (acid treatment) of hydrogen type Y molecular sieve by acid dealumination, the acid used is citric acid, tartaric acid or hydrochloric acid, etc., the specific treatment is as follows: the utilization concentration is 0.5-2.0mol L -1 Soak the molecular sieve with acid (the volume ratio of the two is 1:1-5:1), react at room temperature for 1-5 hours, then dry the filtered and washed molecular sieve at 120°C for 2 hours, and then dry it at 400-600 Roasting in an air atmosphere at ℃ for 2-5 hours to obtain acid-treated Y molecular sieves;

[004...

Embodiment 1

[0049] Example 1 Preparation of Y / TiO by in situ growth 2 -SiO 2 Composite support and catalyst

[0050] Weigh 34.0g of tetrabutyl titanate and 20.8g of tetrabutyl titanate and 20.8g of ethyl orthosilicate, dissolve them in ethanol respectively, and then mix them uniformly to obtain solution A; mix 19mL of deionized water, 41.2mL of acetic acid and 40mL of absolute ethanol to obtain solution B; Under strong stirring, drop solution B into A for reaction. After the dropwise addition and react for 20 minutes, add 3 g of HY molecular sieves and react for 10 minutes to obtain a sol;

[0051] Aging the sol for 24-48h under natural conditions to obtain a gel;

[0052] Use supercritical carbon dioxide fluid to dry the gel to obtain a white powder. The drying conditions are: temperature 40°C, pressure 8.0-12.0MPa, drying time 1-2 hours;

[0053] Roast the white powder in a muffle furnace at 500-600°C for 3 hours to obtain Y / TiO 2 -SiO 2 Composite carrier (composite catalytic mater...

Embodiment 2

[0056] Example 2 Preparation of CY / TiO by in-situ growth 2 -SiO 2 Composite support and catalyst

[0057] The HY molecular sieve in Example 1 was replaced with CY molecular sieve after acid pretreatment, and the preparation steps of CY molecular sieve were as follows: adding HY molecular sieve to a concentration of 0.5mol L -1 NH 4 NO 3 In the aqueous solution, the mass ratio of solid to liquid is 1:10, stir and heat to 40°C, add dropwise citric acid solution, after the dropwise addition, continue to stir for 30min, then filter and wash the slurry until neutral, fully dry and place in a muffle furnace Calcined at 500°C for 3 hours to obtain nCY molecular sieve, wherein, n is the ratio of the mass of HY molecular sieve to the mass of citric acid used, and the range of n is 5-60, and the value of n in this embodiment is 16.

[0058] The preparation steps and conditions of the composite carrier and catalyst are the same as in Example 1, and the obtained catalyst is designated...

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Abstract

The invention relates to a method for preparing a heavy distillate hydrotreating catalyst. The invention first provides a method for preparing a Y molecular sieve / mesoporous oxide composite catalytic material, wherein the method comprises the following steps of: performing acid treatment on a hydrogen type Y molecular sieve; and compounding a mesoporous oxide on the surface of the Y molecular sieve subjected to the acid treatment to obtain a Y molecular sieve / mesoporous oxide composite catalytic material by using an in-situ growth method. The invention also provides the method for preparing the heavy distillate hydrotreating catalyst, wherein the method comprises the following steps of: preparing the Y molecular sieve / mesoporous oxide composite catalytic material by the preparation method; carrying active ingredients of the catalyst by using the Y molecular sieve / mesoporous oxide composite catalytic material as a carrier; and drying and roasting to obtain the heavy distillate hydrotreating catalyst.

Description

technical field [0001] The present invention relates to a preparation method of a composite catalytic material and a hydroprocessing catalyst, in particular to a preparation method of a Y molecular sieve / mesoporous oxide composite catalytic material, and a preparation method of a heavy distillate oil hydroprocessing catalyst with high denitrification activity Preparation. Background technique [0002] As crude oil becomes heavier and worse, the proportion of inferior heavy oil increases significantly, and the market demand and quality requirements for light oil products continue to increase. Therefore, the development of lighter and cleaner production technologies for inferior heavy oil appears to be particularly important. [0003] Hydrotreating is one of the most effective technologies to improve the quality and processability of inferior heavy oil, and the level of hydrotreating technology mainly depends on the performance of the catalyst. The heavy distillate oil has l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J32/00B01J29/08B01J29/16C10G45/12
Inventor 周亚松魏强张涛杨兆祥张晓华张海东
Owner BC P INC CHINA NAT PETROLEUM CORP
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