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High-precision desulfurization and denitrification catalyst carrier and preparation method thereof

A denitrification catalyst, high-precision technology, applied in the direction of catalyst carrier, molecular sieve catalyst, chemical instrument and method, etc., can solve the problem of low desulfurization and denitrification efficiency of the catalyst, achieve excellent ion exchange capacity, suppress surface area carbon velocity, reduce surface area The effect of acidity

Active Publication Date: 2016-04-20
SHENYANG SANJUKAITE CATALYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the low desulfurization and denitrification efficiency of the catalyst prepared by the desulfurization and denitrification catalyst carrier in the prior art, so as to provide a catalyst with excellent internal structure, many loaded active components, and high mechanical performance. The high-precision desulfurization and denitrification catalyst carrier with high strength and high compressive and wear resistance and its preparation method make the desulfurization and denitrification catalyst prepared by the high-precision desulfurization and denitrification catalyst carrier have high desulfurization and denitrification efficiency

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  • High-precision desulfurization and denitrification catalyst carrier and preparation method thereof
  • High-precision desulfurization and denitrification catalyst carrier and preparation method thereof
  • High-precision desulfurization and denitrification catalyst carrier and preparation method thereof

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Embodiment 1

[0026] The high-precision desulfurization and denitrification catalyst carrier described in this embodiment includes the following components:

[0027] Magnesium oxide 10kg, zirconia 10kg, MCM-22 molecular sieve 0.1kg, silicon oxide 35kg, aluminum oxide 35kg.

[0028] This embodiment also provides a method for preparing the above-mentioned high-precision desulfurization and denitrification catalyst carrier, including the following steps:

[0029] (1) Take the silicon oxide, aluminum oxide, magnesium oxide and MCM-22 molecular sieve according to the selected weight and carry out dry mixing for 0.5 hours, and mix well, and set aside;

[0030] (2) Add water to the zirconium salt taken according to the selected weight to prepare an aqueous solution of zirconium salt, then take the mixture obtained in step (1), and add 8% silica sol accounting for the weight of the mixture into the aqueous solution of zirconium salt Carry out wet mixing for 2.5 hours, and mix well, set aside;

[...

Embodiment 2

[0033] The high-precision desulfurization and denitrification catalyst carrier described in this embodiment includes the following components:

[0034] Magnesium oxide 20kg, zirconium oxide 0.1kg, MCM-22 molecular sieve 10kg, silicon oxide 45kg, aluminum oxide 45kg.

[0035] This embodiment also provides a method for preparing the above-mentioned high-precision desulfurization and denitrification catalyst carrier, including the following steps:

[0036] (1) Take the silicon oxide, aluminum oxide, magnesium oxide and MCM-22 molecular sieve according to the selected weight and carry out dry mixing for 2.5 hours, and mix well, and set aside;

[0037] (2) Add water to the zirconium salt taken according to the selected weight to prepare an aqueous zirconium salt solution, then take the mixture obtained in step (1), account for 8% attapulgite by weight of the mixture, and add the zirconium salt aqueous solution wet mixing for 0.5 hours, and mix evenly, set aside;

[0038] (3) Extrud...

Embodiment 3

[0040] The high-precision desulfurization and denitrification catalyst carrier described in this embodiment includes the following components:

[0041] Magnesium oxide 15kg, zirconia 5kg, MCM-22 molecular sieve 5kg, silicon oxide 40kg, aluminum oxide 40kg.

[0042] This embodiment also provides a method for preparing the above-mentioned high-precision desulfurization and denitrification catalyst carrier, including the following steps:

[0043] (1) The silicon oxide, pseudo-boehmite, activated magnesia and MCM-22 molecular sieve are weighed according to the selected weight and dry-mixed for 1 hour, and mixed evenly, and set aside;

[0044] (2) Add water that is 1 time the weight of the zirconium nitrate to the zirconium nitrate weighed according to the selected weight to prepare an aqueous solution of zirconium salt, then take the mixture obtained in step (1), accounting for 3% of the weight of the mixture The silica sol was added into the zirconium salt aqueous solution for w...

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Abstract

The invention provides a high-precision desulfurization and denitrification catalyst carrier which comprises the following components by weight part: 10-20 parts of magnesium oxide, 0.1-10 parts of zirconium oxide, 0.1-10 parts of MCM-22 molecular sieves and 70-90 parts of a mixture of silicon oxide and aluminum oxide. The desulfurization and denitrification efficiency of a catalyst prepared with the catalyst carrier can be obviously increased by taking silicon and aluminum as a carrier and adding magnesium oxide, zirconium oxide and MCM-22 molecular sieves into the carrier; the catalyst carrier has high mechanical strength and high compression-resisting abrasive resistance; the problem of low desulfurization and denitrification efficiency of a catalyst prepared with a catalyst carrier in the prior art is solved.

Description

technical field [0001] The invention belongs to the field of desulfurization and denitrification catalyst carrier, and in particular relates to a high-precision desulfurization and denitrification catalyst carrier and a preparation method thereof. Background technique [0002] In recent years, as crude oil has become heavier, the content of impurities such as sulfur and nitrogen has continued to increase. As the environmental requirements have become higher and higher, the content of impurities such as sulfur and nitrogen in oil products has been strictly limited. Usually, hydrogenation technology can be used to desulfurize and denitrify well. [0003] For example, a selective hydrodesulfurization catalyst disclosed in patent US6013598 and its preparation method, the catalyst active component is composed of cobalt, molybdenum and carrier alumina, which is obtained by impregnating the carrier with an equal volume of an aqueous solution containing the active component and addi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J29/70
CPCB01J29/7088B01J2229/186B01J35/61
Inventor 刘聪
Owner SHENYANG SANJUKAITE CATALYST
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