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Preparation method for hydrogenation catalyst

A hydrogenation catalyst and selective hydrogenation technology are applied in the preparation of hydrodesulfurization and conversion catalysts, and in the fields of hydrodemetallization, which can solve the problems of large volume, large amount, and uneconomical economy, and achieve the improvement of pore size distribution and dispersion degree. , the effect of increasing oxygen content

Active Publication Date: 2014-05-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is to carry out acid treatment on the raw material. Since the alumina raw material is relatively large in volume compared with the prepared carrier, the treatment process requires a large amount of acid, which is economically uneconomical.

Method used

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  • Preparation method for hydrogenation catalyst
  • Preparation method for hydrogenation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 200 grams of pseudo-boehmite dry glue (containing 70wt% alumina), add 2.80 grams of scallop powder and mix evenly, then add 6.08 grams of ammonia water, add 190 grams of distilled water, knead and extrude to shape, and then dry at 120 ° C for 2 hours , Calcined at 600°C for 3h to obtain an alumina support for the hydrogenation catalyst.

[0019] Weigh 20 grams of alumina carrier, add 60 mL of 1 mol / L nitric acid solution, treat at 20°C for 24 hours, wash the alumina carrier with 70°C hot water, and dry at 120°C to obtain modified alumina carrier Z-A.

[0020] Weigh 66.67 g of phosphoric acid, add 1200 mL of distilled water, then add 235.3 g of molybdenum oxide and 65.78 g of basic cobalt carbonate in sequence, heat and stir until completely dissolved, then adjust the solution to 1500 mL with distilled water to obtain solution L-1. The modified carrier Z-A was saturated and impregnated with the solution L-1, dried at 110°C for 2 hours, and calcined at 450°C for 5 h...

Embodiment 2

[0022] The method is the same as in Example 1, except that it is treated with 2mol / L nitric acid solution to obtain the modified carrier Z-B. Saturated carrier Z-B was impregnated with L-1 solution, dried at 100°C for 6h, and calcined at 520°C for 3h to obtain catalyst T-B.

Embodiment 3

[0024] The method is the same as in Example 1, except that it is treated at 50° C. for 8 hours to obtain the modified carrier Z-C. Saturated carrier Z-C was impregnated with L-1 solution, dried at 100°C for 6 hours, and calcined at 500°C for 3 hours to obtain catalyst T-C.

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Abstract

The invention discloses a preparation method for a hydrogenation catalyst, which includes the following content: an alumina carrier for the hydrogenation catalyst is prepared or chosen, acid solution or alkali solution is adopted to process the alumina carrier, anthe impregnation method is adopted to load active metal components after washing and drying, and after drying and baking, the hydrogenation catalyst is prepared. The hydrogenation catalyst prepared by the method can effectively improve the physicochemical properties of catalysts and particularly increase the dispersion degree of active metals, and hydrodemetalation catalyst, hydrodesulfurization catalyst, hydro-conversion catalyst and the like can be prepared.

Description

technical field [0001] The invention relates to a preparation method of a hydrogenation catalyst, in particular to a preparation method suitable for hydrodemetallization, hydrodesulfurization and conversion catalysts. Background technique [0002] Hydrogenation catalysts are generally prepared by impregnating the carrier with hydrogenation active metals. The most used hydrogenation catalyst carrier is activated alumina, or modified alumina with the addition of suitable additives, such as silicon-containing alumina. By changing the chemical composition and preparation process conditions, adding additives and other technical measures, the various properties of the alumina carrier and catalyst can be adjusted to a large extent, and the preparation flexibility and reaction performance of the catalyst can be greatly increased. diversity. [0003] Many macroscopic and microscopic properties and performances of catalysts are determined by the basic properties of their supports. F...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/19B01J23/883B01J35/10C10G45/08
Inventor 朱慧红孙素华刘杰王永林杨光
Owner CHINA PETROLEUM & CHEM CORP