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Two-section preparation method of hydrogenated petroleum resin

A hydrogenated petroleum resin, a two-stage technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problem of affecting the service life of catalyst hydrogenation activity, Poisoning and deactivation of palladium precious metal catalysts, etc., to achieve good hydrogenation effect, good activity stability, and uniform distribution

Inactive Publication Date: 2018-04-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because petroleum resins contain double bonds and benzene ring double bonds, and contain elemental impurities such as S and halogen, some petroleum resins produce sols during the polymerization process. Due to the existence of these impurities, palladium precious metal catalysts are easily poisoned and deactivated, directly affecting the catalyst. Hydrogenation activity and service life

Method used

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  • Two-section preparation method of hydrogenated petroleum resin
  • Two-section preparation method of hydrogenated petroleum resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Preparation of carrier: firstly equip with γ-Al 2 O 3 The sol was coated on the surface of 80g spherical activated carbon by 7 times dipping method. The dipping time was 10 minutes each time. The dipping temperature was normal temperature and pressure. After filtration, it was dried at 40℃, and then dried in N 2 Γ-Al can be obtained by firing at 400 ℃ in the atmosphere 2 O 3 Film-coated activated carbon carrier, the weight ratio of alumina and activated carbon is 4:1;

[0042] Preparation of the palladium catalyst: prepare an aqueous solution of palladium nitrate with a concentration of 0.7 mol / L, and the concentration of the ammonium metatungstate solution of the metal promoter is 0.8 mol / L. Using an equal volume impregnation method, 100 g of the carrier prepared above is immersed in nitric acid Soak in salt and ammonium metatungstate solution for 5 hours at room temperature, and dry the catalyst precursor at 110°C for 6 hours. 2 After calcining at 500°C for 7 hours, the fi...

Embodiment 2

[0046] Preparation of carrier: firstly equip with γ-Al 2 O 3 The sol was coated on the surface of 80g spherical activated carbon by 9 times dipping method. The dipping time is 15 minutes each time. The dipping temperature is normal temperature and pressure. After filtration, it is dried at 45°C, and then fired at 450°C under N2 atmosphere. You can get γ-Al 2 O 3 The membrane-coated activated carbon carrier, the weight ratio of alumina or activated carbon is 5:1.

[0047] Preparation of the palladium catalyst: prepare an aqueous solution of palladium nitrate with a concentration of 0.6 mol / L, and the concentration of the ammonium metatungstate solution of the metal promoter is 0.5 mol / L. Using an equal volume impregnation method, 100 g of the carrier prepared above is immersed in nitric acid In the salt solution, immerse the catalyst precursor at a temperature of 40℃ for 4h, and dry the catalyst precursor at 110℃ for 5h. 2 It is calcined at 600°C for 8 hours to obtain a finished pr...

Embodiment 3

[0051] Preparation of carrier: firstly equip with γ-Al 2 O 3 The sol is coated on the surface of 80g spherical activated carbon by 10 times dipping method, each dipping time is 13min, the dipping temperature is normal temperature and pressure, after filtering, drying at 38℃, and then drying in N 2 Γ-Al can be obtained by firing at 500 ℃ in the atmosphere 2 O 3 The membrane-coated activated carbon carrier, the weight ratio of alumina or activated carbon is 6:1.

[0052] Preparation of palladium catalyst: prepare an aqueous solution of palladium nitrate with a concentration of 0.8 mol / L, the concentration of the ammonium metatungstate solution of the metal promoter is 0.9 mol / L, and use an isometric dipping method to immerse 100 g of the above-prepared carrier in nitric acid Soak in salt solution for 6h at room temperature, and dry the catalyst precursor at 115℃ for 5h. 2 It is calcined at 450°C for 8 hours to obtain a finished product with a metal palladium content of 0.34% and a me...

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Abstract

The invention belongs to the technical field of organic chemical industry and particularly relates to a two-section preparation method of hydrogenated petroleum resin. The hydrogenated petroleum resinis prepared by virtue of two hydrogenation catalysts and the two-section preparation method. The two-section preparation method particularly comprises the following steps: firstly, preparing gamma-Al2O3 film coated activated carbon carrier by virtue of a multi-sizing method, loading with catalyst activity components and an active aid by virtue of a dipping method, drying, and roasting so as to respectively prepare a nickel-series catalyst and a palladium-series catalyst; and secondly, carrying out hydrogenation reaction by virtue of a two-section hydrogenation fixed bed reactor, wherein a first-section hydrogenation fixed bed is filled with the nickel-series catalyst, and the second-section hydrogenation fixed bed is filled with the palladium-series catalyst. The method is particularly suitable for a hydrogenation decoloration process of C5 petroleum resin; and by virtue of utilizing two-section hydrogenation, the high-quality hydrogenated petroleum resin can be obtained.

Description

Technical field [0001] The invention belongs to the technical field of organic catalysis, and specifically relates to a two-stage preparation method of hydrogenated petroleum resin. Background technique [0002] Petroleum resin is a kind of functional resin with low molecular weight. It is widely used in coatings, adhesives, printing inks, paper additives and other fields. The main source of petroleum resin is the by-product of petroleum cracking ethylene. Due to the complex composition of cracking raw materials and production of petroleum The process of the resin is due to the existence of double bonds or aromatic ring double bonds, and contains halides and sulfides, and some processes also have gel formation, resulting in deep color, poor stability, and poor compatibility with other resins. In view of its scope of application, hydrogenation of petroleum resin is one of the important means of modification of petroleum resin. Under the action of hydrogen and catalyst, the double...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F8/04C08F240/00B01J23/652B01J23/755B01J35/08B01J35/10
CPCC08F8/04B01J23/6527B01J23/755B01J35/40B01J35/51B01J35/615B01J35/635C08F240/00
Inventor 常慧黄勇秦技强曹强孙骏张景明叶军明瞿卫国
Owner CHINA PETROLEUM & CHEM CORP
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