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A kind of hydrogenation protection catalyst and preparation method thereof

A hydrogenation protection and catalyst technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problems of high catalyst price and cost, and achieve demetallization High activity, strong impurity capacity, cheap and easy-to-obtain raw materials

Active Publication Date: 2022-07-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydrogenation protection agent prepared by the prior art mainly uses alumina and / or modified alumina as the carrier. The cost of the alumina carrier is relatively high in the production process, which leads to a high price of the catalyst. How to choose a suitable alternative carrier becomes People's Research Hotspots

Method used

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  • A kind of hydrogenation protection catalyst and preparation method thereof
  • A kind of hydrogenation protection catalyst and preparation method thereof
  • A kind of hydrogenation protection catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Weigh 50 grams of volcanic rock and place it in a beaker, add 500 mL of aluminum nitrate solution with a mass concentration of 32% to the beaker and immerse it for 1 hour to saturate the volcanic rock. The calcined material was impregnated twice by the same method.

[0035] Weigh 20 grams of volcanic rock after the above-mentioned treatment and place 110 grams of 19% ammonium bicarbonate aqueous solution in mass concentration, transfer the mixture into the autoclave and seal it at 145 ° C for 5.5 hours, then the carrier is dried at 110 ° C for 6 hours , calcined at 800 °C for 4 hours to obtain volcanic rock H1 containing prismatic alumina. The scanning electron microscope photos are as follows figure 1 shown.

[0036] Weigh 20 grams of the above-mentioned volcanic rock containing prismatic alumina, add 50 mL of Mo-Ni-NH 3 Solution (by MoO in final catalyst 35.5 wt%, NiO 1.6 wt%) for 2 hours, filtered off excess solution, dried at 120 °C for 5 hours, and then calcine...

Embodiment 2

[0038] With embodiment 1, just the mass concentration of aluminum nitrate is 36%, the consumption of ammonium bicarbonate solution during heat treatment is 130 grams, and the mass concentration of solution is 22%. The heat treatment temperature was 130°C, and the treatment time was 6 hours. The hydrogenation protection agent Cat-2 was prepared, and the properties of the catalyst are shown in Table 1.

Embodiment 3

[0040] With embodiment 1, only the mass concentration of aluminum nitrate is 40%, the number of times of dipping aluminum salt is 2 times, the consumption of ammonium bicarbonate solution during heat treatment is 150 grams, and the mass concentration of solution is 17%. The heat treatment temperature was 120°C, and the treatment time was 7 hours. The hydrogenation protection agent Cat-3 was prepared, and the properties of the catalyst are shown in Table 1.

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Abstract

The invention discloses a hydrogenation protection catalyst and a preparation method thereof. The catalyst comprises a carrier and a hydrogenation active component. The carrier is volcanic rock particles containing prismatic alumina in the pores. Based on the total weight of the catalyst and in terms of oxides, the Group VIB metal component is 2.0% to 8.5%. , the Group VIII metal composition is 0.5% to 3.5%. The preparation method of the hydrogenation protection catalyst includes: (1) impregnating volcanic rock particles with an aluminum salt solution, and drying and roasting the impregnated material; (2) immersing the material obtained in step (1) in an ammonium bicarbonate solution for sealing and heat treatment , then dried and calcined; (3) impregnating the material obtained in step (2) with an impregnation liquid containing hydrogenation active components, and the impregnated material is dried and calcined to obtain a hydrogenation protection catalyst. The hydrogenation protection catalyst takes the modified volcanic rock rich in prismatic structure as a carrier, has simple preparation process, cheap raw materials, strong impurity tolerance and high demetallization activity, and is especially suitable for the residual oil hydrotreating process.

Description

technical field [0001] The invention relates to the field of catalyst material preparation, in particular to a hydrogenation protection catalyst and a preparation method thereof. Background technique [0002] With the increasing trend of crude oil heavier, the quality of raw materials used in various hydrogenation processes is getting worse and worse, and the content of metal impurities and solid salt particles is high. These impurities are easily deposited on the top of the hydrogenation reactor during the hydrogenation reaction. It makes it difficult for the material to pass through, resulting in an increase in the pressure drop of the hydrogenation reactor and forced skimming. [0003] Hydroprotectant and demetallization catalyst are one of the keys in hydroprocessing technology. During the processing, metal impurities (such as V, Ni, Ca, Fe, etc.) and scales in the raw materials are easily deposited on the surface of the catalyst and in the spaces between the catalyst p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/883C10G45/08
CPCB01J23/883C10G45/08C10G2300/205C10G2300/70
Inventor 季洪海凌凤香王少军张会成沈智奇
Owner CHINA PETROLEUM & CHEM CORP
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