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Clean type hydrocarbon steam pre-conversion catalyst and preparation method thereof

A catalyst and pre-conversion technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of high production cost, achieve high mechanical strength and good activity , structural stability and good activity stability

Inactive Publication Date: 2013-03-06
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The raw material of this invention is micron or nanometer, and the production cost is relatively high

Method used

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  • Clean type hydrocarbon steam pre-conversion catalyst and preparation method thereof
  • Clean type hydrocarbon steam pre-conversion catalyst and preparation method thereof
  • Clean type hydrocarbon steam pre-conversion catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 500.0g of aluminum rubber powder, add 50.0g of titanium dioxide, 2.6g of turnip powder and 3.4g of polyvinyl alcohol, and 280mL of water, 20mL of oxalic acid, fully knead, and shape it into an outer diameter Φ5.0mm, length 5.0mm Flaky, calcined at 950°C to obtain an alumina carrier; prepare a lanthanum acetate impregnation solution with a concentration of 0.01mol / L, soak the carrier in the solution for 140min, take it out and drain it, and dry it at a temperature of 120°C 180min, then roasted and decomposed at 900°C for 180min to obtain a modified carrier; prepare a nickel acetate active solution with a concentration of 1.50mol / L, immerse the modified carrier in the active solution for 140min, take it out and drain it, and dry it at a temperature of 120°C 180min, then calcined and decomposed at 400°C for 180min, then impregnated with nickel acetate solution, dried and calcined repeatedly to obtain catalyst A-1. The content, pore structure data, strength data and e...

Embodiment 2

[0031] Weigh 500.0g of pseudo-boehmite, add 50.0g of titanium dioxide, 4.5g of acetic acid, 3.2g of scallop powder, 300mL of water, 20mL of citric acid, fully knead, and shape it into an outer diameter of Φ4.5mm and a length of 4.0mm The Raschig cyclic shape is calcined at 860°C to obtain an alumina carrier; prepare a mixed impregnation solution of nickel and magnesium oxalate, the concentration of nickel oxalate is 1.00mol / L, the concentration of magnesium oxalate is 0.01mol / L, and the carrier Immerse in the mixed impregnating solution for 140 minutes, take it out and drain, dry at 130°C for 180 minutes, and roast and decompose at 400°C for 180 minutes, repeat dipping, drying, and roasting once to obtain catalyst B-1. The content of each component, pore structure data, strength data and evaluation data in catalyst B-1 are shown in Table 2.

[0032] Change the addition amount of each component in the above-mentioned preparation process, make catalyst B-2, B-3, B-4, B-5, B-6 re...

Embodiment 3

[0036] Weigh 500.0g of alumina powder, add 5.2g of citric acid and 8.6g of turnip powder, add 320mL of water, 20mL of oxalic acid, fully knead, and shape it into a four-leaf clover with an inner diameter of Φ2.0mm and a length of 4.5mm, and roast it at 800°C , to obtain alumina carrier; prepare nickel, lanthanum, magnesium acetate mixed impregnation solution, nickel acetate concentration 1.50mol / L, lanthanum acetate concentration 0.01mol / L, magnesium acetate concentration 0.05mol / L, carrier in the mixed impregnation solution Immerse in water for 140min, take it out and drain, dry at 120°C for 120min, roast and decompose at 400°C for 180min, repeat dipping, drying, and roasting once to obtain catalyst C-1. The content of each component, pore structure data, strength data and evaluation data in catalyst C-1 are shown in Table 3.

[0037] Change the addition amount of each component in the above-mentioned preparation process, make catalyst C-2, C-3, C-4, C-5, C-6 respectively, th...

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Abstract

The invention relates to a preparation method of a catalyst, and in particular relates to a clean type hydrocarbon steam pre-conversion catalyst and a preparation method thereof. The catalyst takes mixed oxide of aluminum oxide and titanium dioxide as carriers, one or more of lanthanum oxide, cerium protoxide and magnesium oxide in any proportion as an accelerant, and nickel oxide as an active component, wherein a precursor of lanthanum oxide, cerium protoxide, magnesium oxide or nickel oxide is a nonnitrogenous salt or compound, preferably corresponding acetate and oxalate. The prepared clean type hydrocarbon steam pre-conversion catalyst has the characteristics of being high in mechanical strength, good in activity, good in strength stability, structure stability, activity stability and the like, all materialization properties can achieve industrial use requirements, no pollutant gas such as nitrogen oxide is emitted in a preparation process, the pollution problem in the production process of the catalyst can be solved, and the cleanness of the gaseous hydrocarbon steam pre-conversion catalyst in the preparation process can be realized.

Description

technical field [0001] The invention relates to a preparation method of a catalyst, in particular to a clean hydrocarbon steam pre-reforming catalyst and a preparation method thereof. Background technique [0002] Hydrocarbon raw material pre-reforming is currently being increasingly used by domestic and foreign refining and chemical enterprises in the process of producing hydrogen or synthesis gas by catalytic steam reforming of hydrocarbon raw materials, such as natural gas, liquefied petroleum gas (LPG), refinery gas, etc. The process of pre-reforming before the catalytic steam reforming of gaseous hydrocarbons to produce hydrogen-rich gas and / or carbon monoxide and hydrogen gas mixture. [0003] Most of the catalyst active components used in hydrocarbon steam prereforming catalysts are nickel. Whether the catalyst is prepared by dry mixing method, co-precipitation method or impregnation method, most of the active component precursors used are nitrates. A large amount of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83C01B3/40
CPCY02P20/52
Inventor 姜建波达建文王昊余汉涛王建华梁卫忠白志敏齐焕东赵庆鲁
Owner CHINA PETROLEUM & CHEM CORP
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