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Selective hydrogenation catalyst for carbon five fraction and preparation and use thereof

A hydrogenation catalyst and selectivity technology, which is applied in the chemical industry, can solve the problems of small load, poor selectivity, and short life, and achieve the effects of convenient operation, long selectivity, and reduced investment costs and energy consumption

Active Publication Date: 2009-03-11
SINOPEC LANZHOU GASOLINEEUM CHEM IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a hydrogenation catalyst with high selectivity, good stability and long life for the defects of poor selectivity, short life and small load of unsaturated hydrocarbon hydrogenation catalysts in the prior art;

Method used

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  • Selective hydrogenation catalyst for carbon five fraction and preparation and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 1. Preparation of carrier S-1

[0049] 1000 grams of α-gibbsite (Shandong Aluminum Factory adopts Bayer method to produce, solid content 60~65wt%) and Y zeolite mixture are packed in the container of 2 liters of vibrations, and wherein Y zeolite quality accounts for 5% of powder mass, Make the container quickly pass through the 700°C high temperature zone for dehydration, the residence time is 0.5 seconds, then put the obtained powder into a small granulator and spray water while rolling, roll into small balls with a diameter of 2 to 4 mm, and then put the small balls in the Place in a sealed bag at room temperature, that is, keep healthy for 24 hours, then hydrate in water at 90°C and pH 7 for 8 hours, dry at 120°C for 4 hours, and roast at 1000°C to obtain alumina-zeolite composite carrier balls, which are expressed as carrier S -1.

[0050] 2. Preparation of Catalyst C-1

[0051] Take 100 grams of carrier S-1, and impregnate the alumina carrier (BET surface area 75...

Embodiment 2

[0053] 1. Preparation of carrier S-2

[0054] Weigh the mixture of 100g of SB powder and Y zeolite, wherein the quality of Y zeolite accounts for 5% of the powder mass, and use 100ml of water and 3.0g of HNO 3 Mix evenly, extrude into strips with a diameter of 1.6mm on a catalyst extrusion molding machine, dry under an infrared lamp for 5 hours, place in an oven to dry at 120°C for 12 hours, bake in a muffle furnace at 1000°C for 5 hours, and cut into 3 A thin strip of -8 mm, denoted as carrier S-2.

[0055] 2. Preparation of Catalyst C-2

[0056] Get 100 grams of carrier S-2 (BET surface area 70m 2 / g), at room temperature, with potassium nitrate aqueous solution (0.1M) impregnated alumina support (BET surface area 75m 2 / g), dried at 120°C for 12 hours, then calcined at 500°C for 4 hours, taken out and cooled to room temperature; impregnated with aqueous hydrochloric acid solution of palladium chloride (pH value is 3.5), and then dried at 120°C for 12 hours , and then ba...

Embodiment 3

[0058] 1. Preparation of carrier S-3

[0059] Put 1000 grams of α-gibbsite (produced by Bayer method in Shandong Aluminum Plant, solid content 60-65% by weight) into a 2-liter vibrating container, and make it quickly pass through the 700°C high-temperature zone for dehydration, with a residence time of 0.5 Seconds, then put the obtained powder into a small granulator and spray water while rolling, roll into small balls with a diameter of 2 to 4 mm, then put the small balls in a sealed bag at room temperature, that is, keep healthy for 24 hours, and then Hydrate in water at 90°C and pH 7 for 8 hours, dry at 120°C for 4 hours, and bake at 1000°C to obtain alumina balls, which are represented as carrier S-3.

[0060] 2. Preparation of Catalyst C-3

[0061] Get 100 grams of carrier S-3 (BET surface area 55m 2 / g), repeat the preparation process of catalyst C-1 in Example 1. The catalyst prepared in this way is designated Catalyst C-3.

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Abstract

The invention provides a selective hydrogenation catalyst for C5 fraction. The catalyst takes a compound of alumina and molecular sieves as a carrier and takes metals in the IA or IIA group, the VIII group, the IVA group and the IB group as active components. The compound carrier is soaked in aqueous solution of metallic compound in the IA / IIA group and is soaked in water soluble salt solution of the metals in the VIII group, nitrate solution of the metals in the IVA group and nitrate solution of the metals in the IB group by one step or multiple steps; after being soaked by one step, the compound carrier is dried for 12-20h at the temperature of 80-200 DEG.C, and then is calcined for 1-12 hours at the temperature of 350-650 DEG C. When the selective hydrogenation is carried out on unsaturated compounds in the C5 fraction by the catalyst, the transformation ratio of alkyne hydrogenation is more than or equal to 45%, the transformation ratio of dialkene is 15-35%, the content of alpha position olefin after hydrogenation is more than or equal to 15% and can meet the need of producing alpha-resin with high quality in the process of subsequent production, thus improving the quality of the alpha-resin products.

Description

technical field [0001] The invention belongs to the field of chemical industry, and relates to a hydrogenation catalyst, in particular to a catalyst for selective hydrogenation of carbon five fractions, and also relates to a method for selectively hydrogenating unsaturated compounds in carbon five fractions by the catalyst . Specifically, the present invention relates to a multi-metallic catalyst and a preparation method thereof with alumina and molecular sieve as a composite carrier, and to a method for the catalyst to selectively hydrogenate alkynes and dienes in the C5 fraction . Background technique [0002] Petroleum cracking to produce ethylene produces a large number of C5 fractions, whose output is about 10% to 30% of the ethylene production capacity. The composition of the C5 fraction is very complex, with about 30 components, of which the total amount of diolefins accounts for about 40% to 60% of the cracked C5 fraction. These diolefins are used in the production...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/12B01J29/068B01J23/62B01J23/58C07C5/05
Inventor 刘晨光焦宏宇潘广勤张耀亨李亮徐惠俭南军毛兵张霖柳彩霞刘志琴邓廷昌
Owner SINOPEC LANZHOU GASOLINEEUM CHEM IND CORP
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