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Preparation method of hydrotreating catalyst

A hydrogenation treatment and catalyst technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, organic compounds/hydrides/coordination complex catalysts, etc., can solve alumina structure damage, channel collapse, and loss of pore structure and other problems, to achieve the effect of increasing hydrogenation activity, increasing quantity, increasing pore diameter and pore volume

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the alumina prepared by this method is mesoporous, the structure of the alumina is destroyed. During the preparation of the carrier, the pores are easily collapsed due to the action of peptizing acid and shear force, and the loss of the pore structure is obvious.

Method used

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  • Preparation method of hydrotreating catalyst
  • Preparation method of hydrotreating catalyst
  • Preparation method of hydrotreating catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of phosphomolybdenum heteropoly acid solution: Mix 300g molybdenum trioxide and 1500g pure water into a three-necked flask, stir evenly at 80°C, then add 41g phosphoric acid for reaction. The pH value of the control solution in the later stage of the reaction is 1.0, and after 5 hours of reaction, filter to obtain a slightly green phosphomolybdenum heteropolyacid solution, and MoO in the solution 3 The concentration is 15.5g / 100ml.

Embodiment 2

[0034] Take 250g of alumina dry rubber and add 52g of tetraethylammonium bromide after beating. After mixing evenly, dry at 120°C for 2.5 hours and filter to obtain modified alumina dry rubber powder; beat the modified alumina dry rubber powder again Then add 25ml phosphomolybdenum heteropoly acid solution, heat to 20°C to react for 1 hour, filter, dry at 110°C for 3 hours, mix with 2g of scallop powder, add 200g of water and 6.9g of nitric acid to prepare the adhesive, knead After forming a plastic body, extrude into a clover shape, dry at 120°C for 2.5 hours, and roast at 400°C for 3 hours to obtain a catalyst precursor; take 10g of nickel nitrate and add 60ml of water, then saturated impregnate the catalyst precursor, place it for 1 hour, and dry at 120°C for 2.5 hours , and calcined at 400°C for 3 hours to obtain catalyst Cat-1, the properties of which are shown in Table 1.

Embodiment 3

[0036] Take 250g of alumina dry rubber and add 41g of N-methylimidazole after beating, mix well, dry at 100°C for 3 hours and filter to obtain modified alumina dry rubber powder; after beating the modified alumina dry rubber powder, Add 25ml of phosphomolybdenum heteropolyacid solution, react at 20°C for 1 hour, filter, dry at 120°C for 2.5 hours, mix with 10g of scallop powder, add 200g of water and 6.9g of nitric acid to prepare the adhesive, and knead it into a plastic body Extrude into a clover shape, dry at 110°C for 3 hours, and roast at 450°C for 2.5 hours to obtain a catalyst precursor; take 10g of nickel nitrate and add 60ml of water, saturate and impregnate the catalyst precursor, leave it for 1 hour, dry at 120°C for 2.5 hours, Calcined for 3 hours to obtain the required catalyst Cat-2, the properties are shown in Table 1.

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Abstract

The invention discloses a preparation method of a hydrotreating catalyst. The preparation method comprises the following steps: (1) pulping dry alumina glue, adding organic salt, uniformly mixing the pulped dry alumina glue and the organic salt, performing solid-liquid separation and drying on the mixture so as to obtain modified dry alumina glue powder; (2) pulping the modified dry alumina glue powder, adding the pulped modified dry alumina glue powder in a heteropoly phospho-molybdic acid (H2PMo12O40) solution, performing a reaction on the organic salt in the solution and heteropoly phospho-molybdic acid, and after reaction, performing solid-liquid separation, drying, extrusion molding and calcination on the mixture so as to obtain a catalyst precursor; (3) dipping the catalyst precursor in activated metal promoter, and drying and calcining the catalyst precursor so as to obtain a catalyst product. For the catalyst prepared by adopting the method disclosed by the invention, the active components are uniformly distributed in the catalyst, so that the catalyst is easy to vulcanize; the activated metal has high dispersity on the surface of the catalyst, so that the activity of the catalyst is improved, the use ratio of the activated metal is increased, and the service life of the catalyst is prolonged.

Description

technical field [0001] The invention belongs to catalyst preparation technology, and in particular relates to a preparation method of a hydrogenation treatment catalyst. 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 aromatics. [0003] Currently the most common hydrogenation catalysts are supported Co-Mo, Ni-Mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/28C10G45/08
Inventor 吕振辉薛冬彭绍忠张学辉高玉兰
Owner CHINA PETROLEUM & CHEM CORP
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