Carrier, catalyst and preparation method for hydrogenation protecting agent

A technology for hydrogenation protection and catalyst, which is applied in catalyst carriers, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as unfavorable precipitation and removal, and achieve improved permeability, Highly active, simple process effect

Active Publication Date: 2021-10-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the content of pores with a pore diameter of more than 1000nm is low, which is not conducive to the precipitation and removal of iron, calcium, nickel and vanadium in residual oil

Method used

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  • Carrier, catalyst and preparation method for hydrogenation protecting agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Weigh 500 grams of pseudoboehmite A1 (produced by Wenzhou Jingjing Alumina Co., Ltd., with a weight content of 70% on a dry basis) and roast at 470°C for 5 hours to prepare alumina.

[0038] Weigh 50 grams of the above-mentioned alumina and place it in 300 grams of 10% ammonium bicarbonate aqueous solution, transfer the mixed material into an autoclave, seal it, heat it at 150°C for 4 hours, and then dry the carrier at 100°C for 8 hours. The aluminum oxide was submerged in a 40% polyethylene glycol-6000 (molecular weight: 6000) solution for 1.5 hours, and then the carrier was dried at 100°C for 8 hours to obtain rod-shaped alumina clusters.

[0039] Weigh 85 grams of pseudo-boehmite A1 (manufactured by Wenzhou Jingjing Alumina Co., Ltd., with a weight content of 70% on a dry basis), 50 grams of the above-mentioned rod-shaped alumina clusters, and 1.5 grams of scallop powder, and mix the above-mentioned materials evenly , adding an appropriate amount of aqueous solution ...

Embodiment 2

[0042] Same as Example 1, except that the calcination temperature of pseudo-boehmite A1 is 530°C. The consumption of ammonium bicarbonate solution is 400 grams, and the mass concentration of solution is 12%. The heat treatment temperature is 170° C., and the treatment time is 4 hours. The polyethylene glycol-6000 solution was changed to polyethylene glycol-2000 (that is, the molecular weight is 2000) solution, and the mass concentration was 50%. The amount of rod-shaped alumina clusters added was 56 grams, and alumina carrier Z2 and hydrogenation protection catalyst C2 were obtained. The properties of alumina carrier Z2 are shown in Table 1.

Embodiment 3

[0044] Same as Example 1, except that the calcination temperature of pseudo-boehmite A1 is 490°C. The consumption of ammonium bicarbonate solution is 500 grams, and the mass concentration of solution is 13%. The heat treatment temperature is 150° C., and the treatment time is 8 hours. The polyethylene glycol-6000 solution was changed to polyethylene glycol-12000 (that is, the molecular weight is 12000) solution, and the mass concentration was 30%. The amount of rod-shaped alumina clusters added was 45 grams, and alumina carrier Z3 and hydrogenation protection catalyst C3 were obtained. The properties of alumina carrier Z3 are shown in Table 1.

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Abstract

The invention discloses a carrier for a hydrogenation protecting agent, a catalyst and a preparation method thereof. The carrier is an alumina carrier, which contains rod-shaped alumina clusters; the length of the rod-shaped alumina is 2-6µm, the diameter is 100-300nm, and the outer diameter of the rod-shaped alumina clusters is 8-25µm; Rod-shaped alumina clusters account for 35%-49% of the weight of the alumina carrier. The preparation method of the carrier comprises: roasting pseudo-boehmite A to obtain alumina; immersing the alumina in an aqueous solution of ammonium bicarbonate for sealing and heat treatment, drying, and immersing in polyethylene glycol solution, and drying the material after immersion, Rod-shaped alumina clusters are obtained; then pseudo-boehmite B is kneaded with the above-obtained rod-shaped alumina clusters to form, and the formed product is dried and calcined to obtain a carrier. As a protection catalyst for residual oil hydrogenation, the carrier has the characteristics of good macromolecule diffusion performance, strong impurity capacity and high demetallization activity, and is especially suitable for residual oil hydrogenation treatment process.

Description

technical field [0001] The invention relates to an alumina carrier, a catalyst and a preparation method thereof, in particular to a carrier, a catalyst and a preparation method thereof for a residual oil hydrogenation protecting agent. Background technique [0002] At present, hydroprocessing is still the most important means to produce high-quality, environment-friendly petroleum products. The core of hydroprocessing technology is the catalyst. For the hydroprocessing of heavy components of petroleum (such as VGO, especially residual oil), the pore size and pore volume of the catalyst will directly affect the activity of the catalyst. [0003] The main function of the residual oil hydrogenation protection catalyst is to remove iron, calcium, nickel and vanadium in the residual oil. The carrier materials used in the existing residual oil hydrogenation protection catalysts are generally macroporous alumina and its modified products. The commonly used preparation methods of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/04B01J32/00B01J23/882B01J23/883B01J23/888C10G45/08
Inventor 隋宝宽季洪海彭冲吕振辉关月明佟佳
Owner CHINA PETROLEUM & CHEM CORP
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