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Hydrogenation catalyst of distillate oil and preparation method thereof

A hydrogenation catalyst, distillate oil technology, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of difficult pore structure, poor hydrothermal stability of carriers, affecting catalyst activity, etc. High degree of dispersion, good hydrothermal stability, and the effect of reducing diffusion limitation

Active Publication Date: 2009-12-02
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its disadvantage is that the pore wall of MCM-41 mesoporous molecular sieve is thin, and the pore structure is difficult to modify, so the hydrothermal stability of the carrier is poor, which affects the life of the catalyst.
[0007] In addition, a hydrocracking catalyst and a distillate deep hydrodesulfurization catalyst are respectively disclosed in the Chinese patent documents with the publication number CN1667093A and the notification number CN1228419C. It is mechanically mixed and has no modification process, so its disadvantages are (1) the hydrothermal stability of the mesoporous molecular sieve has not been improved, and the life of the catalyst in the application process is short; (2) the microporous structure of the zeolite molecular sieve affects the active metal (3) Although the acidity of the support is complementary, it cannot effectively promote the interaction between the metal and the support, thus affecting the activity of the catalyst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of Catalyst Support Z1

[0029] (i) 35g of pseudo-boehmite, 65ml of tetramethoxysilane and 70ml of deionized water were mixed and stirred to obtain paste A;

[0030] (ii) get 40g template agent (polyethylene glycol-polyglycerol-polyethylene glycol EO 20 PO 70 EO 20 , referred to as P 123 ) into 1.3L hydrochloric acid solution (pH value 1.5), stirring constantly to form jelly, adding paste A gradually, and stirring constantly, and continuing to stir for 10 hours after adding completely, the whole process is at 40°C Complete in a constant temperature water bath, then put the obtained mixture B into a high-pressure reactor, and crystallize at 100°C for 24 hours;

[0031] (iii) Take out the crystallized material in the reaction kettle, filter, wash with deionized water, then dry the solid composite at 120°C for 12 hours, and roast at 450°C for 24 hours, and the heating rate before each constant temperature is 3°C / Minutes to get SBA-15 / γ-Al 2 o 3 Composit...

Embodiment 2

[0033] Preparation of Catalyst C1 Using Z1 as Carrier

[0034] Weigh 25.1g of ammonium tetramolybdate (containing molybdenum oxide 85.0%) and add it to 100ml deionized water. After dissolving, add 13.9g ammonium metatungstate (containing tungsten oxide 80.6%) and stir to dissolve; add 5.5g nitric acid to 20ml deionized water Nickel, after stirring to dissolve, mix the two solutions, filter, and add appropriate amount of deionized water to obtain 100ml of stable co-immersion solution. 100 g of the carrier Z1 described in Example 1 was saturated and impregnated with the above co-impregnation solution at room temperature, allowed to stand overnight, then dried at 130°C for 10 hours and at 450°C for 6 hours to obtain catalyst C1. The composition of the catalyst is shown in Table 2.

Embodiment 3

[0036] Preparation of Catalyst Support Z2

[0037] (i) 21g of pseudo-boehmite, 95ml of tetraethoxysilane and 70ml of deionized water were mixed and stirred to obtain paste A;

[0038] (ii) get 40g template agent (polyethylene glycol-polyglycerol-polyethylene glycol EO 20 PO 70 EO 20 , referred to as P 123 ) into 1.3L hydrochloric acid solution (pH value 1.0), stirring continuously to form a jelly, adding the paste A gradually, and stirring continuously, and continuing to stir for 10 hours after adding completely, the whole process is at 40°C Finish in a constant temperature water bath, and then put the obtained mixture B into an autoclave for crystallization at 100° C. for 24 hours.

[0039] (iii) Take out the crystallized material in the reaction kettle, filter, wash with deionized water, then dry the solid composite at 100°C for 48 hours, and roast at 550°C for 6 hours, and the heating rate before each constant temperature is 3°C / minute. Get SBA-15 / γ-Al 2 o 3 Compos...

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PUM

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Abstract

The invention provides a hydrogenation catalyst of distillate oil and a preparation method thereof. The catalyst comprises a carrier and at least a metal oxide which is selected respectively from VIII group and VIB group and is loaded on the carrier, wherein, the carrier is composed of aluminium oxide and a mesoporous molecular sieve SBA-15. The hydrogenation catalyst in the invention has the advantages of large specific surface, pore distribution concentration, high dispersion degree of active metal and good effects of desulfuration, denitrification and colloid removal.

Description

technical field [0001] The invention relates to a distillate oil hydrogenation catalyst and a preparation method thereof, belonging to the technical field of catalysts in petrochemical and petroleum refining. Background technique [0002] Hydrofining is one of the important processes in petroleum processing. It mainly removes harmful impurities in oil products through catalytic hydrogenation, such as organic compounds such as sulfur, nitrogen, oxygen and metals, so that oil products can better meet the requirements of deep processing and achieve rational utilization of resources. [0003] The research and development of hydrogenation catalysts is almost in sync with the development of the petroleum industry, and there are various brands of catalysts used in industrial production at home and abroad. At present, there are two main aspects of research on hydrogenation catalysts, (1) focusing on the selection of carriers, including adding additives, improving preparation method...

Claims

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Application Information

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IPC IPC(8): B01J29/78C10G45/08
Inventor 田志坚蒲延芳徐云鹏曲炜闻学兵
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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