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A method for preparing hydrogenated C9 petroleum resin by directional hydrogenation

A technology for carbon 9 petroleum resin and petroleum resin, which is applied in the field of directional hydrogenation to prepare hydrogenated carbon 9 petroleum resin, can solve the problems of staying in the experimental stage and high catalyst cost, and achieve the advantages of improving product quality, good thermal stability and improving life. Effect

Active Publication Date: 2019-07-30
HENGHE MATERIALS & SCI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the above-mentioned documents and patents, a single nickel-based or precious metal hydrogenation catalyst is usually used, and the solvent is generally selected from one or more of n-heptane, cyclohexane, methylcyclohexane, toluene, mineral essential oil and reformed raffinate. First, the above-mentioned process fails to effectively solve the impact of impurities in the petroleum resin on the life of the hydrogenation catalyst, the cost of the catalyst is very high, basically stays in the experimental stage, and has not been industrialized

Method used

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  • A method for preparing hydrogenated C9 petroleum resin by directional hydrogenation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Mix the softening point of 120°C, Gardner color number 11# C9 petroleum resin and the mixed solvent (trimethylbenzene and naphthenic oil with a mass ratio of 1:1) evenly at a mass ratio of 1:1, and then pass the temperature to 280°C Al 2 o 3 Packed bed T101 removes colloid and other impurities to make the colloid content <10mg / 100mL to obtain pretreated resin liquid.

[0036] (2) The pretreated resin liquid is transported into the loaded Ni / Mo / W-Al 2 o 3 Catalyst (loaded metal content is 40wt%, metal element molar ratio Ni:Mo:W=1:0.9:0.4, specific surface area 140m 2 / g, pore volume 0.5cm 3 / g, a particle size of 4mm) in a hydrogenation reactor R101 for hydrogenation reaction; wherein, the hydrogenation reaction temperature is 220°C, the reaction pressure is 13MPa, the hydrogen-oil ratio is 500:1, and the liquid hourly space velocity (LHSV) is 2h -1 , to obtain a hydrogenated resin solution.

[0037] (3) The hydrogenated resin liquid of the above-mentioned sta...

Embodiment 2

[0041] (1) Mix the softening point of 113°C, Gardner color number 9# C9 petroleum resin and the mixed solvent (trimethylbenzene and naphthenic oil at a mass ratio of 1:2) evenly at a mass ratio of 1:3, and then pass the temperature to 300°C Al 2 o 3 Packed bed T101 removes colloid and other impurities to make the colloid content <10mg / 100mL to obtain pretreated resin liquid.

[0042] (2) The pretreated resin liquid is transported into the loaded Ni / Mo / W-Al 2 o 3 Catalyst (loaded metal content is 30wt%, metal element molar ratio Ni:Mo:W=1:1:0.5, specific surface area 140m 2 / g, pore volume 0.5cm 3 / g, particle size 4mm) of a hydrogenation reactor R101 for hydrogenation reaction; wherein, the hydrogenation reaction temperature is 270°C, the reaction pressure is 16MPa, the hydrogen-oil ratio is 500:1, and the liquid hourly space velocity (LHSV) is 2h -1 , to obtain a hydrogenated resin solution.

[0043] (3) The hydrogenated resin liquid of the above-mentioned stage is tran...

Embodiment 3

[0047] (1) Mix the softening point of 117°C, Gardner color number 10# C9 petroleum resin and the mixed solvent (trimethylbenzene and naphthenic oil with a mass ratio of 1:3) evenly at a mass ratio of 1:3, and then pass the temperature to 300°C Al 2 o 3 Packed bed T101 removes colloid and other impurities to make the colloid content <10mg / 100mL to obtain pretreated resin liquid.

[0048] (2) The pretreated resin liquid is transported into the loaded Ni / Mo / W-Al 2 o 3 Catalyst (loaded metal content is 30wt%, metal element molar ratio Ni:Mo:W=1:1:0.3, specific surface area 150m 2 / g, pore volume 0.5cm 3 / g, particle size 4mm) of a hydrogenation reactor R101 for hydrogenation reaction; wherein, the hydrogenation reaction temperature is 260°C, the reaction pressure is 15MPa, the hydrogen-oil ratio is 500:1, and the liquid hourly space velocity (LHSV) is 3h -1 , to obtain a hydrogenated resin solution.

[0049] (3) The hydrogenated resin liquid of the above-mentioned stage is t...

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Abstract

The invention relates to a method for preparing hydrogenated C9 petroleum resin by directional hydrogenation. The method comprises the following steps: (1) uniformly mixing C9 petroleum resin with a mixing solvent and then removing impurities through a Al2O3 packed bed; (2) conveying a pretreated liquid resin into a one-stage hydrogenation reactor loaded with Ni / Mo / W-Al2O3 catalyst and performing hydrogenation reaction, thereby acquiring a one-stage hydrogenated liquid resin; (3) conveying the one-stage hydrogenated liquid resin into a pressure-stabilizing flash column, thereby acquiring desulfurized liquid resin at the column bottom; (4) uniformly mixing the desulfurized liquid resin with hydrocracking aviation fuel and then feeding into a two-stage hydrogenation reactor, and performing hydrogenation reaction, thereby acquiring two-stage hydrogenated liquid resin; and (5) conveying the two-stage hydrogenated liquid resin into a decompression rectifying column, thereby acquiring the hydrogenated C9 petroleum resin at the column bottom. According to the method provided by the invention, the process is simple and convenient; the hydrogenation cost is low; the middle solvent is basically recycled; the prepared hydrogenated C9 petroleum resin has an excellent performance and a higher industrial value.

Description

technical field [0001] The invention belongs to the field of petroleum resins, in particular to a method for preparing hydrogenated C9 petroleum resins through directional hydrogenation. Background technique [0002] C9 petroleum resin, also known as aromatic hydrocarbon petroleum resin, is a medium and low molecular weight polymer obtained by polymerization of ethylene by-product C9 fraction as raw material, and its production raw material cracking C9 fraction accounts for about 10-20% of ethylene production. The distillate has complex components and is rich in unsaturated hydrocarbons such as styrene, methylstyrene, dicyclopentadiene, indene, methylcyclopentadiene dimer, etc. [0003] According to its preparation process, C9 petroleum resin can be roughly divided into cold poly carbon nine resin and hot poly carbon nine resin. Cold poly C9 petroleum resin is a resin with a certain softening point obtained by copolymerizing the polyolefin components in the C9 fraction unde...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F240/00C08F8/04
CPCC08F8/04C08F240/00
Inventor 杨孟君
Owner HENGHE MATERIALS & SCI TECH CO LTD
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