Diesel deep hydrogenation catalyst and its preparation method and application

A deep hydrogenation and catalyst technology, applied in the direction of catalyst carrier, chemical instrument and method, organic compound/hydride/coordination complex catalyst, etc., can solve the problems of impregnation effect, active component cluster effect and other problems

Active Publication Date: 2021-03-09
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The main purpose of the present invention is to provide a diesel deep hydrogenation catalyst and its preparation method and application to overcome the impregnation effect and active component clustering effect caused by the impregnation method in the preparation of diesel hydrogenation catalysts in the prior art Impact

Method used

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  • Diesel deep hydrogenation catalyst and its preparation method and application
  • Diesel deep hydrogenation catalyst and its preparation method and application
  • Diesel deep hydrogenation catalyst and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Get benchmark pseudo-boehmite 100g, 5wt% mulberry silk solid fiber silk, add 5wt% turnip powder and mix evenly, 7.5wt% nitric acid (65wt%), 5wt% citric acid and 100g deionized water form the mixed solution kneading, Extruded into a clover shape of 1.5 mm, dried at 120° C. for 2 hours, and then calcined at 550° C. for 4 hours to make carrier 1 .

Embodiment 2

[0044] Get benchmark pseudo-boehmite 100g, 10wt% coniferous wood solid fiber silk, add 5wt% turnip powder and mix evenly, 7.5wt% nitric acid (65wt%), 5wt% citric acid and 100g deionized water form the mixed solution kneading, Extruded into a clover shape of 1.5mm, dried at 120°C for 2 hours, and then calcined at 550°C for 4 hours to make carrier 2.

Embodiment 3

[0046] Get benchmark pseudo-boehmite 100g, 20wt% corn stalk solid fiber filaments, add 5wt% turnip powder and mix evenly, 7.5wt% nitric acid (65wt%), 5wt% citric acid and 100g deionized water form the mixed solution kneading, Extruded into a clover shape of 1.5 mm, dried at 120° C. for 2 hours, and then calcined at 550° C. for 4 hours to make carrier 3 .

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Abstract

The invention discloses a diesel deep hydrogenation catalyst and its preparation method and application, comprising the following steps: step 1, preparation of alumina carrier; step 2, preparation of active component impregnation solution: adding active component precursor After being completely dissolved in the modifier aqueous solution, a competitive adsorption aid is added to obtain an active component impregnation solution; wherein, the active component, competitive adsorption aid and modifier are all calculated as oxides, and the mass ratio is 1 ~7:1~1.8:1~5; and step 3, immerse the alumina carrier in step 1 in the active component impregnation solution in step 2 to obtain a catalyst wet strip, stand still, dry, and roast to obtain deep hydrogenation of diesel oil catalyst. When the catalyst provided by the invention is used for deep hydrodesulfurization of diesel oil, its hydrodesulfurization activity is higher than that of a diesel hydrogenation catalyst supported by a traditional impregnation method.

Description

technical field [0001] The invention relates to a deep hydrogenation catalyst for diesel oil and its preparation method and application. The catalyst is especially suitable for the production of clean diesel oil of China V and China VI. Background technique [0002] As my country's diesel quality standards become increasingly stringent, the market demand for high-quality clean diesel is increasing year by year. Accelerating the upgrading of diesel quality and producing high-quality clean diesel is one of the key tasks of refining and chemical enterprises. To upgrade the quality of diesel oil in existing diesel hydrogenation units, currently available means include reducing the processing capacity of the unit, increasing the reaction severity of the unit, lowering the final boiling point of diesel oil, and using high-activity diesel hydrogenation catalysts. Measures such as reducing the processing capacity of the device, increasing the severity of the reaction of the device,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/19B01J27/24B01J31/26B01J32/00C10G45/08
CPCB01J23/002B01J27/19B01J27/24B01J31/26B01J35/1019B01J35/1038C10G45/08C10G2300/202C10G2400/04
Inventor 马宝利徐铁钢刘茉徐伟池王丹宋金鹤于春梅张文成孙发民杨晓东谭明伟温广明方磊张英豪张铁珍赵野李瑞峰
Owner PETROCHINA CO LTD
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