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A kind of preparation method of catalytic diesel oil hydrogenation conversion catalyst

A technology for hydroconversion and catalytic diesel, which is applied in the directions of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of unfavorable hydroconversion to produce high-octane gasoline, large loss of octane number of gasoline products, Reduce the hydrogen saturation of gasoline components, and achieve the effect of improving the effective hydrogenation capacity, improving the selectivity of the hydrogenation reaction, and reducing excessive hydrogenation

Active Publication Date: 2020-11-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method cannot selectively reduce the hydrogenation saturation of gasoline components, so the octane number loss of gasoline products is relatively large
[0005] EP20110834653 discloses a method for preparing a polycyclic aromatic hydrocarbon hydrogenation conversion catalyst. The catalyst carrier is composed of β molecular sieve and pseudo-boehmite. The active metal components of Group VIB and Group VIII are added by conventional methods, but the catalyst is also Strong saturation ability for gasoline components, which is not conducive to the process of catalytic diesel hydrogenation conversion to produce high-octane gasoline

Method used

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  • A kind of preparation method of catalytic diesel oil hydrogenation conversion catalyst
  • A kind of preparation method of catalytic diesel oil hydrogenation conversion catalyst
  • A kind of preparation method of catalytic diesel oil hydrogenation conversion catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Take 200g of industrially produced macroporous alumina and place it in a closed container filled with butadiene atmosphere, control the pressure at 0.3MPa and fully contact it for 20 minutes, then heat it at 200°C for 80 hours in an air atmosphere;

[0022] (2) Take 50g of alumina obtained in step (1), 80g of industrially modified Y molecular sieve, MoO 3 Mix 15g with 20g nickel nitrate, add 4g / 100mL dilute nitric acid, mix and roll in a mixer until it can be extruded, and then extrude into strips;

[0023] (3) Step (2) After the sample was dried at 120°C for 4 hours in an air atmosphere, it was transferred to a nitrogen atmosphere and calcined at 500°C for 3 hours to obtain catalyst C1.

Embodiment 2

[0025] (1) Soak 200g of industrially produced macroporous alumina in heptene for 4 hours, then heat at 180°C for 150 hours in an air atmosphere;

[0026] (2) Mix 50g of alumina obtained in step (1) with 100g of industrially modified Y molecular sieve, add 4g / 100mL of dilute nitric acid in a mixer, mix, roll, extrude, and then dry at 120°C for 4 hours to obtain the carrier of Example 2;

[0027] (3) Configure Mo-Ni impregnation solution, MoO 3 1. Basic nickel carbonate is added to distilled water to prepare a partial Mo-Ni impregnation solution, and the MoO is adjusted in the mixed solution by the oxide of the metal salt. 3 30g / 100mL, nickel oxide 10g / 100mL;

[0028](4) Take the Mo-Ni impregnation solution obtained in step (3), impregnate the catalyst carrier obtained in step (2) according to the liquid-solid ratio of 3:1 for 2 hours, then dry at 150°C for 2 hours in air atmosphere, and then transfer to helium atmosphere Calcined at 400°C for 4h to obtain catalyst C2.

Embodiment 3

[0030] (1) Soak 200g of industrially produced macroporous alumina in heptene for 2 hours, then heat at 300°C for 200 hours in an air atmosphere;

[0031] (2) Mix 80g of alumina obtained in step (1), 80g of industrially modified Y molecular sieve, 22g of ammonium metatungstate and 20g of nickel nitrate, add 4g / 100mL of dilute nitric acid, mix and roll in a mixer until it can be extruded , and then extrusion molding;

[0032] (3) Step (2) After the sample was dried at 120°C for 4 hours in an air atmosphere, it was transferred to a nitrogen atmosphere and calcined at 550°C for 3 hours to obtain catalyst C3.

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Abstract

The invention discloses a preparation method of a catalyst for catalyzing diesel hydrogenation conversion. The preparation method comprises the following steps: (1) sufficiently contacting aluminum oxide with liquid or gaseous unsaturated olefin, and then performing a carbon deposition reaction in an oxygen-containing atmosphere to obtain carbon-deposited aluminum oxide; (2) uniformly mixing the carbon-deposited aluminum oxide, a Y molecular sieve and a compound containing hydrogenated active metals of a group VIB and a group VIII, adding dilute nitric acid to form a slurry, moulding by extruding into strips, drying, and calcinating to obtain the catalyst. By adopting the preparation method, the effective hydrogenation ability of an active component of the catalyst is improved and the hydrogenation reaction selectivity of the catalyst is improved.

Description

technical field [0001] The invention belongs to the technical field of hydrogenation treatment, and in particular relates to a preparation method of a catalytic diesel hydrogenation conversion catalyst. Background technique [0002] Since the beginning of the new century, with the increasing awareness of environmental protection, the stricter national environmental protection regulations and the rapid development of the national economy, the demand for clean motor fuels has been increasing all over the world. Catalytic cracking (FCC) technology is one of the main technological means for lightening heavy oil, and it occupies a relatively important position in oil refining enterprises all over the world. The annual processing capacity of catalytic cracking units in my country has exceeded 100 million tons, second only to the United States. In the composition of gasoline and diesel products, catalytic cracking gasoline accounts for about 80%, and catalytic diesel oil accounts ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/16C10G47/20
CPCB01J29/166B01J2229/186C10G47/20C10G2400/02
Inventor 柳伟关明华杜艳泽高杭张晓萍
Owner CHINA PETROLEUM & CHEM CORP
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