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Alloy type catalyst for lightening heavy aromatics and preparation method thereof

A technology for lightening heavy aromatics and catalysts, which is applied in the field of alloy-type heavy aromatics lightening catalysts and its preparation, which can solve the problems of fast catalyst deactivation rate, low yield of single-ring aromatics, and low conversion depth of heavy aromatics. Achieve the effects of slow deactivation rate, high yield and high conversion depth

Active Publication Date: 2019-11-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] One of the technical problems to be solved by the present invention is to overcome the problems of low conversion depth of heavy aromatics, low yield of single-ring aromatics and fast catalyst deactivation rate when the catalyst is used in the lightening reaction of heavy aromatics in the prior art. A New Alloy Type Catalyst for Lightening Heavy Aromatics

Method used

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  • Alloy type catalyst for lightening heavy aromatics and preparation method thereof
  • Alloy type catalyst for lightening heavy aromatics and preparation method thereof
  • Alloy type catalyst for lightening heavy aromatics and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Add 60g of HY molecular sieve (commercially available) with a silicon-aluminum ratio of 10 and 30g of pseudo-boehmite (commercially available) on a dry basis into the mixer until uniform, then add 3g of turnip powder and 5g of HNO at a volume ratio of 1:1 to the mixture. 3 solution and 40g deionized water, and grind evenly to make a dough suitable for extrusion. It is extruded through a die and is in the shape of a slender cylinder (diameter 1.7mm). After drying at 120°C, it is baked at 550°C for 4 hours, and then it is cut into carrier particles (1.7×4.0mm) of uniform size for use.

[0038] The mixed solution of chloroiridic acid, nickel nitrate, and zinc nitrate was used to impregnate the carrier particles at 40°C, and the dry basis weight of the carrier contained in the impregnation solution was 0.2% Ir, 4% Ni and 1% Zn, aged for 8h and passed After drying, it was oxidized in air at 900°C for 4 hours, and then reduced in hydrogen at 700°C for 4 hours (this step can b...

Embodiment 2

[0041] Add 60g of Beta molecular sieve (commercially available) with a silicon-aluminum ratio of 15 and 30g of pseudoboehmite (commercially available) on a dry basis into the mixer until uniform, then add 3g of scallop powder and 5g of HNO with a volume ratio of 1:1 to the mixture. 3 solution and 40g deionized water, and grind evenly to make a dough suitable for extrusion. It is extruded through a die and is in the shape of a slender cylinder (diameter 1.7mm). After drying at 120°C, it is baked at 550°C for 4 hours, and then it is cut into carrier particles (1.7×4.0mm) of uniform size for use.

[0042] The mixed solution of chloroiridic acid, nickel nitrate, and zinc nitrate was used to impregnate the carrier particles at 40°C, and the dry basis weight of the carrier contained in the impregnation solution was 0.2% Ir, 4% Ni and 1% Zn, aged for 8h and passed After drying, oxidize in air at 900°C for 4 hours, and then reduce in hydrogen at 700°C for 4 hours (this step can be com...

Embodiment 3

[0045] Add 60g of MOR molecular sieve (commercially available) with a silicon-aluminum ratio of 30 and 30g of pseudoboehmite (commercially available) on a dry basis into the mixer until uniform, then add 3g of turnip powder, 5g of HNO at a volume ratio of 1:1 to the mixture 3 solution and 40g deionized water, and grind evenly to make a dough suitable for extrusion. It is extruded through a die and is in the shape of a slender cylinder (diameter 1.7mm). After drying at 120°C, it is baked at 550°C for 4 hours, and then it is cut into carrier particles (1.7×4.0mm) of uniform size for use.

[0046] The mixed solution of chloroiridic acid, nickel nitrate, and zinc nitrate was used to impregnate the carrier particles at 40°C, and the dry basis weight of the carrier contained in the impregnation solution was 0.2% Ir, 4% Ni and 1% Zn, aged for 8h and passed After drying, oxidize in air at 900°C for 4h, and then reduce in hydrogen at 700°C for 4h (this step can be completed in a reacto...

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Abstract

The invention relates to an alloy type heavy aromatic hydrocarbon lightening catalyst and a preparation method thereof to mainly solve the problems of low conversion level of heavy aromatic hydrocarbon, low yield of monocyclic aromatic hydrocarbon, and high catalyst deactivation rate in the prior art. The technical scheme is that the catalyst provided by the invention comprises the following components in percentage by weight: 44-60.9% of at least one of FAU, BEA, MOR or MFI type zeolite, 10-30% of pseudo-boehmite, 0.1-0.5% of noble metal Ir, 2-6% of metal Ni and 0.5-3% of at least one of Zn and Bi. By adopting the technical scheme, the problems are well solved. The alloy type heavy aromatic hydrocarbon lightening catalyst is suitable for the chemical refining field of lightening heavy aromatic hydrocarbon into monocyclic aromatic hydrocarbon.

Description

technical field [0001] The invention relates to an alloy type catalyst for lightening heavy aromatics and a preparation method thereof. Background technique [0002] Heavy aromatics refer to C 9 above aromatics. At present, heavy aromatics undergo simple rectification operations to separate high-value mesitylene, partial tetramethylbenzene, naphthalene, methylnaphthalene, etc., and a small part of the rest is used to produce solvent oil or as a blending component of gasoline. As a low-priced fuel, the utilization rate of raw materials is low, which not only wastes resources, but also seriously pollutes the environment and damages human health, and it is difficult to exert the due economic benefits of heavy aromatics resources. Therefore, in order to meet the increase in oil demand brought about by economic development, increasing the production of high value-added light oil products through the development of heavy oil deep conversion technology will still be a major devel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/14B01J29/76B01J29/46B01J29/16C10G47/18C10G47/20
CPCB01J29/085B01J29/14B01J29/16B01J29/405B01J29/46B01J29/7049B01J29/7057B01J29/76B01J29/7615B01J2229/18C10G47/18C10G47/20C10G2300/1096C10G2300/70C10G2400/30
Inventor 孔德金李旭光陈燕周亚新
Owner CHINA PETROLEUM & CHEM CORP
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