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Hydrocarbon steam conversion catalyst and preparation method thereof

A catalyst and steam technology, applied in the field of hydrocarbon steam reforming catalyst and its preparation, can solve the problem of high preparation cost and achieve the effects of good mechanical strength, high activity and good physical and chemical properties

Active Publication Date: 2016-05-11
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent is mainly to improve the performance of the catalyst by adjusting the catalyst carrier and additives, reduce the activity of carbon deposition in methane dehydrogenation, and increase the adsorption and carbon removal of carbon dioxide to improve the carbon resistance of the catalyst. However, organic complexation is required in the preparation of the catalyst. The agent forms a sol-gel body, and the preparation cost is high

Method used

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  • Hydrocarbon steam conversion catalyst and preparation method thereof
  • Hydrocarbon steam conversion catalyst and preparation method thereof
  • Hydrocarbon steam conversion catalyst and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034]Weigh 150g of aluminum nitrate, 14.3g of zirconium nitrate, 7.1g of nickel nitrate, and 23.2g of magnesium nitrate, dissolve them in 425ml of water and stir for 10min to obtain solution 1. Weigh 113.6 g of potassium carbonate and dissolve it in 610 ml of water to obtain solution 2. Solution 1 and Solution 2 were co-currently mixed uniformly in a 25kHz ultrasonic oscillator at a constant temperature of 25°C, and 27.6g of metakaolin, 9.2g of calcium hydroxide, and 6.5g of potassium hydroxide were added and shaken for 30 minutes to obtain mixed solution 3. Naturally cool to room temperature, take it out, wash, and dry at 80°C for 48 hours to obtain a solid semi-finished product. Mix the semi-finished product with 0.90g of graphite and ball mill, add an appropriate amount of water, knead and extrude, and heat up to 480°C at a rate of 2.5°C / min after drying , Calcined at constant temperature for 2h, then raised to 950°C for 2.5h at a rate of 2°C / min to obtain Catalyst A. The...

Embodiment 2

[0036] Weigh 150g of aluminum nitrate, 42.2g of zirconium nitrate, 10.4g of nickel nitrate, and 1.32g of magnesium nitrate, dissolve them in 472ml of water and stir for 10min to obtain solution 1. Weigh 113g of potassium carbonate and dissolve it in 610ml of water to obtain solution 2. Solution 1 and solution 2 were mixed uniformly in a 30kHz ultrasonic oscillator at a constant temperature of 50°C in parallel, and 20.3g of metakaolin, 5.4g of calcium hydroxide, and 3.4g of potassium hydroxide were added and shaken for 35 minutes to obtain mixed solution 3. Naturally cool to room temperature, take it out, wash, and dry at 100°C for 24 hours to obtain a solid semi-finished product. Mix the semi-finished product with 1.0g of graphite and ball mill, add an appropriate amount of water, knead and extrude, and heat up to 450°C at a rate of 2°C / min after drying , roasted at a constant temperature for 2 hours, and then raised to 850 °C for 2.5 hours at a rate of 2 °C / min to obtain cata...

Embodiment 3

[0038] Weigh 75g of aluminum nitrate, 21.5g of zirconium nitrate, 5.1g of nickel nitrate, and 0.56g of potassium nitrate, dissolve them in 275ml of water and stir for 10min to obtain solution 1. Weigh 43.5 g of sodium carbonate and dissolve it in 410 ml of water to obtain solution 2. Solution 1 and solution 2 were mixed uniformly in a 40kHz ultrasonic oscillator at a constant temperature of 75°C in parallel, and 47.9g of metakaolin, 7.5g of calcium hydroxide, and 3.7g of potassium hydroxide were added and shaken for 45min to obtain mixed solution 3. Naturally cool to room temperature, take it out, wash, and dry at 90°C for 36 hours to obtain a solid semi-finished product. After mixing the semi-finished product with 1.1g of graphite and ball milling, add an appropriate amount of water for kneading and extrusion molding. After drying, heat up to 450°C at a rate of 2°C / min. , calcination at constant temperature for 2 hours, and then calcination at 950 ℃ at a rate of 2 ℃ / min for 2...

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Abstract

The invention relates to a hydrocarbon steam conversion catalyst and a preparation method thereof and belongs to the technical field of catalyst preparation. The hydrocarbon steam conversion catalyst utilizes nickel as an active component, alumina and zirconia as composite oxide carriers, a rare earth metal oxide and / or alkaline earth metal oxide as a promoter and a potassium hydroxide-metakaolin-calcium hydrate mixture as an anti-carbon agent. The hydrocarbon steam conversion catalyst has high carbon formation resistance, high activity, good physicochemical performances, good mechanical strength and hole-direction crushing strength of 300N / particle or more. Compared with the industrial catalyst, the hydrocarbon steam conversion catalyst has better activity and stability under conditions of system pressure of 3.0MPa, a carbon air speed of 6000h<-1>, H2O / C(mol / mol) of 2.0, a bed layer inlet temperature of 480 DEG C and a bed layer outlet temperature of 750 DEG C.

Description

technical field [0001] The invention relates to a hydrocarbon steam reforming catalyst and a preparation method thereof, belonging to the technical field of catalyst preparation. Background technique [0002] Due to its excellent physical and chemical properties, hydrogen has gradually become the main industrial raw material and the most important industrial gas in the world today. It is widely used in petrochemical, electronic industry, metallurgical industry, food processing, float glass, fine organic synthesis, Aerospace and other industries, of which the largest amount is the petrochemical industry. [0003] At present, the methods for large-scale production of hydrogen in the world's industry mainly include hydrocarbon steam reforming hydrogen production, coal gasification hydrogen production, etc., and due to the regional limitations of coal resources, the hydrogen production process of hydrocarbon steam reforming is currently used in my country clearly dominates the i...

Claims

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Application Information

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IPC IPC(8): B01J23/58B01J23/63C01B3/26
Inventor 薛红霞王昊姜建波白志敏赵庆鲁齐焕东梁卫忠余汉涛
Owner CHINA PETROLEUM & CHEM CORP
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