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Gasoline aromatization and isomerization reforming catalyst and preparation method and applications thereof

A catalyst and aromatization technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of cumbersome catalyst preparation steps and achieve good aromatization effects

Active Publication Date: 2013-08-21
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned patents developed a catalyst with aromatization function for FCC gasoline upgrading, which showed good octane number retention performance, but had disadvantages such as composite carrier synthesis and cumbersome catalyst preparation steps.

Method used

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  • Gasoline aromatization and isomerization reforming catalyst and preparation method and applications thereof
  • Gasoline aromatization and isomerization reforming catalyst and preparation method and applications thereof
  • Gasoline aromatization and isomerization reforming catalyst and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] ①Preparation of catalyst carrier

[0036] 1) Weigh 3.5kg of nano ZSM-5 powder, 1.14kg of pseudoboehmite and 120g of scallop powder, mix the three evenly, add 2300ml of nitric acid solution with a mass concentration of 10%, fully knead and place in the extruder forming. Stand at room temperature for 12 hours, then dry at 100°C for 12 hours, and bake at 540°C for 3 hours, and set aside.

[0037] 2) Put 4 kg of the catalyst carrier prepared in the above step 1) in a 0.4 mol / L ammonium nitrate solution at a solid-to-liquid volume ratio of 1:5, and place it at room temperature for 1 hour. After filtering, wash with deionized water until neutral. Repeat the above operation twice. Dry at 100°C for 12h, and bake at 540°C for 3h, and set aside.

[0038] 3) Put 4 kg of the catalyst carrier prepared in the above step 2) in a 0.6 mol / L nitric acid solution at a solid-to-liquid ratio of 1:5, and place it at room temperature for 24 hours. After filtering, wash with deionized wat...

Embodiment 2

[0044] ① Preparation of catalyst carrier: same as in Example 1.

[0045] ② Preparation of catalyst

[0046] 1) Load 20g of the above-mentioned catalyst carrier A in the constant temperature section of the fixed bed, -1 Introduce steam for 2h.

[0047] 2) Immerse the catalyst treated in the above step 1) in 15ml of a solution containing 3.66g of zinc nitrate and 0.62g of lanthanum nitrate, immerse at room temperature for 24h, filter, dry at 100°C for 12h, and roast at 540°C for 4h to obtain loaded zinc oxide and Lanthanum oxide catalyst.

[0048] 3) Then immerse the catalyst prepared in the above step 2) in 15ml of a solution containing 1.48g of ammonium dihydrogen phosphate, immerse at room temperature for 12h, filter, dry at 100°C for 12h, and roast at 540°C for 4h to obtain the product catalyst E.

Embodiment 3

[0050] ① Preparation of catalyst carrier: same as in Example 1.

[0051] ② Preparation of catalyst

[0052] 1) Load 10g of the above-mentioned catalyst carrier A in the constant temperature section of the fixed bed, -1 Introduce steam for 3h.

[0053] 2) immerse the catalyst after the above step 1) in 8ml of solution containing 0.92g zinc nitrate and 0.27g lanthanum nitrate, soak at room temperature for 24h, filter, dry at 100°C for 12h, and roast at 540°C for 4h to obtain loaded zinc oxide and Lanthanum oxide catalyst.

[0054] 3) Then immerse the catalyst prepared in the above step 2) in 8ml of a solution containing 0.74g of ammonium dihydrogen phosphate, immerse at room temperature for 24h, filter, dry at 100°C for 12h, and roast at 540°C for 4h to obtain the product catalyst F.

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Abstract

The invention discloses a gasoline aromatization and isomerization reforming catalyst. The catalyst comprises the following components by weight percent: 0.1-5% of oxide of the metal in IIB group, 0.1-3% of lanthanide metal oxide, 0.1-5% of oxide of the element in VA group, 50-80% of nanosized HZSM-5 and 20%-40% of alumina. The preparation method comprises the following steps: using a nanosized ZSM-5 molecular sieve to prepare the nanosized HZSM-5 carrier, performing hydrothermal treatment, and adopting the isovolumetric impregnation method to load an active component I and an active component II and obtain the target catalyst. The catalyst provided by the invention has good aromatization activity and isomerization activity and a certain desulfurization capacity; and the olefin content (V) of the gasoline product which is prepared by using the catalyst provided by the invention is no more than 30%, the aromatic content (V) is no more than 35%, the benzene content (V) is no more than 1% and the loss of the octane value is no more than 1.

Description

technical field [0001] The invention relates to a preparation method and application of a gasoline aromatization isomerization catalyst. In particular, it relates to a catalyst preparation method for loading active metal components on nano-scale ZSM-5 molecular sieves. Through the interaction between additives, metal components and molecular sieves, the dispersion of metal active components is improved, and the catalytic performance of the catalyst is improved. . Background technique [0002] With the improvement of gasoline standards, how to hydro-upgrade to reduce the olefin content in gasoline, remove sulfur compounds, and at the same time make the loss of octane number smaller is the key to gasoline upgrading. The octane number of catalytic cracked gasoline (FCC gasoline) raw materials with low olefin content, high aromatic content and sulfur content less than 200ppm is mainly provided by aromatics and isoparaffins. During the upgrading process, by increasing the selec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/40C10G45/64
Inventor 王祥生龙化云靳凤英
Owner DALIAN UNIV OF TECH
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