A kind of hydrogenation method of raffinate oil

A technology of raffinate and hydrogenation reaction, applied in chemical instruments and methods, through selective hydrogenation refining, petroleum industry, etc., can solve the problems of long industrial application cycle, reduce hydrothermal treatment process, mild reaction conditions, The effect of large specific surface area

Inactive Publication Date: 2018-04-20
QINZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, when the researched and developed catalyst is used for the hydrogenation of raffinate oil to produce aromatic solvent oil, the activity and stability of the catalyst are good, and the industrial application cycle is long

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Dissolve 1.2kg of zinc nitrate in 6L of water to make a solution containing zinc, and dissolve 0.24kg of sodium metaaluminate and 0.30kg of sodium carbonate in 4L of water to make a solution containing aluminum. Divide the zinc-containing solution into 3 equal parts, each 2L. Take 2L of zinc-containing solution, keep the temperature at 80°C, add aluminum-containing mixed solution dropwise to it until the pH value reaches 9.0; stop dropping the aluminum-containing mixed solution, then add 2L of zinc-containing solution dropwise to the mixing system, and continue to drop aluminum-containing solution Mix the solution until the pH value reaches 9.0; titrate the aluminum-containing mixed solution and the zinc-containing solution alternately until all the zinc-containing solutions are added, and add the aluminum-containing mixed solution dropwise until the pH reaches 9.0. The total titration time is 3 hours. The obtained mixture was aged at 80°C for 4h, cooled and washed unti...

Embodiment 2

[0049] The preparation method and steps of the composite carrier containing zinc oxide-alumina are the same as in Example 1, and the zinc oxide containing zinc-aluminum spinel is prepared, and the pH value is adjusted to 8.7. In terms of oxides, the content of zinc oxide is 70%; the specific surface area is 191m 2 / g.

[0050] The composite carrier includes 30wt% of zinc oxide containing zinc-aluminum spinel, 67wt% of alumina, and the contents of phosphorus, potassium and magnesium in the auxiliary components are P 2 o 5 0.6wt%, K 2 O 0.8wt%, MgO 1.6wt%.

[0051] The difference is that after the composite carrier is obtained, the composite carrier containing zinc oxide-alumina is modified by using potassium and magnesium. , magnesium nitrate, completely dissolved in 30ml of distilled water, then diluted with deionized water, made into a solution and sprayed with a composite carrier of zinc oxide-alumina, so that the content of potassium and magnesium on the outside of the...

Embodiment 3

[0056] The preparation method and steps of the composite carrier containing zinc oxide-alumina are the same as in Example 1. Zinc oxide containing zinc aluminum spinel was prepared, and the pH value was adjusted to 9.3. Zinc oxide containing zinc aluminum spinel, calculated as oxide, the content of zinc oxide is 63%; the specific surface area is 214m 2 / g.

[0057] The composite carrier includes 18.3wt% of zinc oxide containing zinc-aluminum spinel, 77.5wt% of alumina, and the contents of phosphorus, potassium and magnesium in the auxiliary components are P 2 o 5 0.9wt%, K 2 O 0.8wt%, MgO 3.5wt%. Composite carrier specific surface area 242m 2 / g.

[0058]Take 27.56g of nickel formate and add it to 30ml of distilled water, then dilute it with deionized water, make an impregnating solution to impregnate 100g of spherical zinc oxide-alumina composite support, and dry the obtained catalyst precursor Calcined for 7h to obtain catalyst 3. The main composition of the catalys...

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Abstract

The invention discloses a hydrogenating method of raffinate oil. The method is characterized in that a fixed bed reactor is used, a palladium-based supported catalyst is used, reaction temperature is 165-200 DEG C, reaction pressure is 1.0-5.0MPa, hydrogen / oil volume ratio is (300-700):1, volume space velocity is 1.0-6.0h<-1>. The hydrogenating method is mild in hydrogenating reaction process condition, high in aromatic hydrocarbon and olefin removing rate and long in stable operation period.

Description

technical field [0001] The invention relates to a method for hydrogenation of raffinate, more specifically, a catalyst for hydrogenation of raffinate with zinc oxide-alumina composite material as a carrier is used for hydrogenation reaction of reformed raffinate. Background technique [0002] Various grades of solvent oil can be produced by hydrogenation of raffinate oil in refinery. A large category of products. The solubility of aliphatic hydrocarbons is not as good as that of aromatics, but the toxicity of aromatics is serious. The production of low-aromatic and non-aromatic solvent oils has become the development direction of the solvent oil industry. At present, the most commonly used methods in China are sulfonation-oxidation method for dearomatization, deene, molecular sieve dearomatization, desulfurization, solvent extraction dearomatization and so on. The leading methods of solvent refining in foreign countries are deep hydrogenation refining, dearomatization, des...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/36C10G49/04B01J27/185
CPCB01J27/1853C10G45/36C10G49/04C10G2300/201
Inventor 罗祥生晁会霞黄贵秋
Owner QINZHOU UNIV
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