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A kind of cracking carbon nine second-stage hydrogenation catalyst and preparation method thereof

A hydrogenation catalyst and catalyst technology, applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of increasing the content of diolefins and colloids, affecting the effect of the second-stage hydrogenation, and accelerating the first-stage hydrogenation catalyst Inactivation and other problems, to achieve the effect of enhancing the ability of anti-carbon deposition, avoiding a large loss of aromatics, and improving the ability of anti-gelatin

Active Publication Date: 2015-11-11
WUHAN KELIN FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the inferior quality of raw materials will also accelerate the deactivation of the first-stage hydrogenation catalyst, causing the content of diolefins and colloids in the export product of the first-stage hydrogenation to rise rapidly, thereby affecting the effect of the second-stage hydrogenation and indirectly affecting the second-stage hydrogenation Catalyst puts higher demands on

Method used

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  • A kind of cracking carbon nine second-stage hydrogenation catalyst and preparation method thereof
  • A kind of cracking carbon nine second-stage hydrogenation catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] HY molecular sieve 3.0g, B 2 o 315.0g, pseudo-boehmite 107.0g, stir evenly, add nitric acid, safflower powder and appropriate amount of distilled water, stir and roll evenly, then extrude, dry at 100°C for 5h, then raise the temperature to 900°C, Calcined in air for 5h under the condition of saturated water to obtain a composite oxide. Then weigh 1.5g of potassium carbonate and 9.5g of ruthenium nitrate and add a certain amount of distilled water to make an impregnating solution, and use the same amount of impregnation method to load it on the above composite oxide, let it stand for 24h, dry at 130°C for 3h, and roast at 500°C for 3h Finally, the desired composite oxide support is obtained. The carrier has an average pore diameter of 25nm, a pore volume of 0.65ml / g, and a specific surface area of ​​220m 2 / g. This vector was named as 1# vector.

Embodiment 2

[0023] HY molecular sieve 5.0g, B 2 o 3 10.0g, pseudo-boehmite 117.0g, stir evenly, add nitric acid, safflower powder and appropriate amount of distilled water, stir and roll evenly, then extrude, dry at 150°C for 3h, then raise the temperature to 1000°C, Calcined in air for 4h under the condition of saturated water to obtain a composite oxide. Then weigh 6.4g of potassium nitrate and 4.8g of ruthenium nitrate and add a certain amount of distilled water to prepare an impregnating solution, and use the same amount of impregnation method to load it on the above composite oxide, let it stand for 24h, dry at 100°C for 4h, and roast at 600°C for 2h Finally, the desired composite oxide support is obtained. The carrier has an average pore diameter of 20nm, a pore volume of 0.82ml / g, and a specific surface area of ​​260m 2 / g. This vector was named as 2# vector.

Embodiment 3

[0025] HY molecular sieve 4.0g, B 2 o 3 20.0g, pseudo-boehmite 98.6g, stir evenly, add nitric acid, safflower powder and appropriate amount of distilled water, stir and roll evenly, then extrude, dry at 130°C for 4h, then raise the temperature to 1100°C, Calcined in air for 3h under the condition of saturated water to obtain a composite oxide. Then weigh 4.3g of potassium nitrate and 7.8g of ruthenium chloride and add a certain amount of distilled water to make an impregnating solution, and use the same amount of impregnation method to load it on the above-mentioned composite oxide, let it stand for 24h, dry at 150°C for 2h, and roast at 700°C After 1 h, the desired composite oxide support was obtained. The carrier has an average pore diameter of 15nm, a pore volume of 0.47ml / g, and a specific surface area of ​​180m 2 / g. This vector was named as 3# vector.

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Abstract

The invention relates to a catalyst for pyrolysis C9 two-stage hydrogenation and a preparation method thereof. The catalyst is prepared by taking a K and Ru modified composite oxide consisting of an HY molecular sieve, B2O3 and Al2O3 as a carrier and loading active components of Ni and Mo. The catalyst comprises the following active components in percentage by weight: 3.0-5.0% of NiO and 9.0-15.0% of MoO3. The catalyst provided by the invention is used for pyrolysis C9 two-stage hydrogenation, shows very high desulfurization activity and olefin saturation capacity, is strong in carbon deposition resistance and has a certain effect on macromolecular colloid pyrolysis, so that the colloid resistance of the catalyst is improved, and the service life of the catalyst is greatly prolonged.

Description

technical field [0001] The invention relates to a cracked carbon nine second-stage hydrogenation catalyst and a preparation method thereof. Specifically, it is a HY molecular sieve modified by K and Ru, B 2 o 3 and Al 2 o 3 The composite oxide is used as the carrier, and the catalyst is made of supporting the active components Ni and Mo. The catalyst is used for cracking carbon nine and hydrogenation in two stages, and removes sulfide and olefins in carbon nine. The invention also relates to a preparation method of the catalyst. Background technique [0002] Cracked carbon nine is a by-product of ethylene cracking, mainly composed of C 6 ~C 12 Hydrocarbons account for 10% to 20% of ethylene production. In recent years, my country's ethylene industry has developed rapidly. In 2010, the domestic ethylene output reached 14.188 million tons / year, and the by-product cracked carbon nine reached 1.41-2.82 million tons / year. Due to the lack of relevant technologies and othe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/16C10G49/08
Inventor 王国兴张先茂吴阳春王泽夏大寒陈凯王俊士
Owner WUHAN KELIN FINE CHEM
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