Spherical hydrogenation catalyst and preparation method thereof

A hydrogenation catalyst and catalyst technology, applied in the direction of catalyst carriers, chemical instruments and methods, heterogeneous catalyst chemical elements, etc., can solve problems such as uneven distribution of additives, achieve concentrated particle size distribution, improve comprehensive performance, and crystallize high degree of effect

Active Publication Date: 2017-05-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few literature reports on the uneven distribution of additive concentration

Method used

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  • Spherical hydrogenation catalyst and preparation method thereof
  • Spherical hydrogenation catalyst and preparation method thereof
  • Spherical hydrogenation catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 400g of triethylammonium chloride, 220g of sodium hexafluorophosphate, and 450g of pure water were mixed, heated to 90°C under stirring, kept at a constant temperature for 3 hours, clarified, naturally cooled to about 30°C, and centrifuged to filter out the solid to obtain 450g of ionic liquid I. The water content is about 3.5wt%, and the yield is 72wt%.

[0047] Trimethylphenylammonium chloride 500g, sodium hexafluorophosphate 260g, pure water 450g, mix, heat to 90°C under stirring, keep the temperature for 3 hours, clarify, naturally cool to about 30°C, centrifuge and filter out the solid to obtain the ionic liquid II 550g, water content about 3.5wt%, yield 74wt%.

[0048] Add 15g of ionic liquid I and 2L of distilled water into the reaction kettle, adjust the reaction temperature to 60°C, mix sodium metaaluminate (calculated as alumina, the concentration is 26g / mL) and aluminum sulfate (calculated as alumina, the concentration is 8g / mL) ) parallel flow for neutraliz...

Embodiment 2

[0056] Triethylammonium chloride 300g, sodium hexafluorophosphate 160g, pure water 350g, mixed, heated to 100°C under stirring, kept at constant temperature for 2.5h, clarified, naturally cooled to about 30°C, centrifuged to filter out the solid to obtain 420g of ionic liquid II , the water content is about 3.7wt%, and the yield is 72wt%.

[0057] Dimethylphenylammonium chloride 600g, sodium hexafluorophosphate 300g, pure water 550g, mix, heat to 70°C under stirring, keep the temperature for 3 hours, clarify, naturally cool to about 30°C, centrifuge and filter out the solid to obtain an ionic liquid Ⅲ550g, water content about 4.0wt%, yield 74wt%.

[0058] Add 20g of ionic liquid I and 2L of distilled water into the reaction kettle, adjust the reaction temperature to 60°C, mix sodium metaaluminate (calculated as alumina, the concentration is 26g / mL) and aluminum sulfate (calculated as alumina, the concentration is 8g / mL) ) parallel flow for neutralization reaction, the pH valu...

Embodiment 3

[0066] Tetraethylammonium chloride 450g, sodium hexafluorophosphate 250g, pure water 500g, mixed, heated to 90°C under stirring, kept at constant temperature for 3 hours, clarified, naturally cooled to about 30°C, centrifuged to filter out the solid to obtain 650g of ionic liquid II, The water content is about 3.9wt%, and the yield is 75wt%.

[0067] 500g of methyl phenyl ammonium chloride, 260g of sodium hexafluorophosphate, 450g of pure water, mix, heat to 90°C under stirring, keep the temperature for 3 hours, clarify, naturally cool to about 30°C, centrifuge and filter out the solid to obtain 550g of ionic liquid III , the water content is about 3.5wt%, and the yield is 74wt%.

[0068] Add 24g of ionic liquid I and 2L of distilled water into the reaction kettle, adjust the reaction temperature to 65°C, mix sodium metaaluminate (calculated as alumina, the concentration is 26g / mL) and aluminum sulfate (calculated as alumina, the concentration is 8g / mL) ) parallel flow for ne...

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Abstract

The invention discloses a spherical hydrogenation catalyst and a preparation method thereof. The catalyst comprises a modified alumina carrier and hydrogenation active metal, wherein the modified alumina carrier comprises an alumina carrier and an auxiliary agent. With the weight of the modified alumina carrier as the baseline, content of the alumina carrier is 95-98%, the auxiliary agent accounts for 2-5% when metered on the basis of elements, and concentration of the auxiliary agent is gradually reduced from the center of carrier particles to the external surface. The auxiliary agent is one of the following combinations I, II and III, wherein I is fluorine and phosphor; II is fluorine and boron; and III is fluorine, phosphor and boron. The preparation method comprises the following steps: respectively adding ionic liquids I, II and III during the gel forming process of sodium metaaluminate solution and aluminum sulfate solution so as to prepare the modified alumina carrier; dipping the active component, drying, and roasting to obtain the required hydrogenation catalyst. By the use of the catalyst, pore structure and acid distribution can be organically combined so as to enhance overall performance of the catalyst. The preparation method is suitable for preparation of a hydrogenation catalyst with high demetalization activity and strong metal melting capability.

Description

technical field [0001] The invention relates to a spherical hydrogenation catalyst and a preparation method thereof, in particular to a hydrogenation catalyst with decreasing additive concentration and double pore distribution and a preparation method thereof. Background technique [0002] Crude oil and distillates derived from crude oil contain impurities such as sulfur, nitrogen, oxygen and metals. The existence of these impurities not only affects the stability of the oil, but also emits SO during use. X , NO X and other harmful gases pollute the environment. During the secondary processing of oil products, the presence of impurities such as sulfur, nitrogen, oxygen and metals can poison catalysts. Therefore, removing the above-mentioned impurities is an important process in oil processing. Distillate oil hydrotreating refers to the process of contacting raw oil and hydrogen with a catalyst at a certain temperature and pressure to remove impurities and saturate aromat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883B01J32/00B01J21/04B01J35/10B01J35/08C10G45/08
CPCB01J21/04B01J23/002B01J23/883B01J35/08B01J35/1019B01J35/1038B01J35/1042B01J35/1061B01J2523/00C10G45/08C10G2300/1037C10G2300/1077C10G2300/202C10G2300/205B01J2523/31B01J2523/68B01J2523/847
Inventor 吕振辉彭绍忠张学辉高玉兰佟佳徐黎明
Owner CHINA PETROLEUM & CHEM CORP
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