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Hydroisomerization catalyst, preparation method and application thereof, and hydroisomerization method for hydrocracked tail oil

A hydroisomerization and catalyst technology, which is applied in the field of hydroisomerization catalysts and its preparation, can solve the problems of reduced processing capacity, reduced device production efficiency, poor utilization of tail oil, etc., and achieves low pour point , high isomerization reaction selectivity, high viscosity index effect

Active Publication Date: 2016-05-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many domestic refineries do not make good use of this part of tail oil, and a large part is used for plant circulation, resulting in a decline in the actual processing capacity of the plant and reducing the production efficiency of the plant

Method used

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  • Hydroisomerization catalyst, preparation method and application thereof, and hydroisomerization method for hydrocracked tail oil

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] (1) Take 70g (on a dry basis, the same below) of ZSM-22 molecular sieve (the ratio of silicon to aluminum is 70), 30g (on a dry basis, the same below) of alumina (provided in the form of pseudo-boehmite, below same), followed by dry mixing and extruding, and the wet strip obtained was dried at 120° C. for 4 hours, and then calcined at 500° C. for 3 hours to obtain a catalyst carrier.

[0072] (2) The 40g catalyst carrier obtained in step (1) was impregnated with a solution containing 60mL of nickel nitrate hexahydrate (5.0% by weight) for 4 hours, and then the impregnated mixture was dried at 120°C for 4 hours to obtain a catalyst carrier loaded with Ni. a. 40 g of the Ni-loaded support was immersed in 60 mL of an aqueous solution containing chloroplatinic acid (concentration: 0.8% by weight) for 4 hours. After filtering the impregnated mixture, the collected solid was dried at 120° C. for 4 hours to obtain a catalyst precursor.

[0073] (3) The catalyst precursor obt...

Embodiment 2

[0075]Adopt the method identical with embodiment 1 to prepare catalyst, difference is, in step (2), the 40g catalyst carrier that step (1) obtains is used 60mL to contain the solution impregnation 4 hours of nickel nitrate hexahydrate (concentration is 5.0% by weight) , and then the impregnated mixture was dried at 120 °C for 4 hours to obtain a Ni-loaded carrier. 40 g of the Ni-loaded support was immersed in 60 mL of an aqueous solution containing chloroplatinic acid (concentration: 0.8% by weight) for 4 hours. The impregnated mixture was placed in an autoclave, and after the autoclave was closed, the temperature in the autoclave was raised to 170° C. and kept at this temperature for 4 hours to perform hydrothermal treatment. After the temperature of the autoclave dropped to room temperature, the autoclave was opened, the hydrothermally treated material was taken out and filtered, and the collected solid was dried at 120° C. for 4 hours to obtain a catalyst precursor. The pr...

Embodiment 3

[0077] Adopt the method identical with embodiment 2 to prepare catalyst, difference is, in step (2), the 40g catalyst carrier that step (1) obtains is used 60mL to contain the solution impregnation 4 hours of nickel nitrate hexahydrate (concentration is 5.0% by weight) , and then the impregnated mixture was dried at 120 °C for 4 hours to obtain a Ni-loaded carrier. 40 g of the Ni-loaded support was immersed in 60 mL of an aqueous solution containing chloroplatinic acid (concentration: 0.8% by weight) for 4 hours. The mixture obtained by impregnation is placed in the autoclave, then ammoniacal liquor is added dropwise in the autoclave, the pH value of the liquid phase in the mixture obtained by the impregnation is adjusted from 6.2 to 9, then the autoclave is closed, and the autoclave is The temperature inside was raised to 170 °C and kept at this temperature for 4 hours for hydrothermal treatment. After the temperature of the autoclave dropped to room temperature, the autocla...

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Abstract

The invention discloses a hydroisomerization catalyst, a preparation method and an application thereof. The preparation method comprises the following steps: a) providing a catalyst precursor containing a carrier, and a compound containing noble metals in the VIII group and a compound containing a second metal which are both supported on the carrier, wherein the two compounds hereinabove are both non-oxides, the second metal is one or more than two selected from the metal in the VB group, the metal in the VIB group, non-noble metal in the VIII group and lanthanum-series metals, the carrier containing mesoporous molecular sieve; and b) roasting the catalyst precursor in an atmosphere formed by a gas containing an oxidizing gas and a halogen-containing compound. The invention also discloses a hydroisomerization method for hydrocracked tail oil with the hydroisomerization catalyst. The hydroisomerization catalyst, when being used in the hydroisomerization for the hydrocracked tail oil, can be used for producing an isomerized product having high viscosity index and low pour point, which is suitable for being used as lubricant basic oil.

Description

technical field [0001] The invention relates to a hydroisomerization catalyst and its preparation method and application, and also relates to a hydroisomerization method of hydrocracking tail oil. Background technique [0002] With the rapid development of the automobile industry, higher requirements are placed on the quality of lubricating oil products. my country is the world's second largest consumer of lubricating oil. In 2009, the sales volume was nearly 8 million tons, and the market size was over 100 billion yuan. However, due to backward technology, more than 85% of the high-end lubricating oil market is occupied by well-known foreign brands, while high-end lubricating oil is sold with Less than 20% of the market captures 80% of the profits. The hydroisomerization dewaxing technology of lubricating base oil is the most advanced hydrogenation production technology of high-grade lubricating oil at present. Higher, but lower investment and operating costs. Therefore, ...

Claims

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Application Information

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IPC IPC(8): B01J29/76B01J29/78B01J29/74B01J29/85C10G45/64
Inventor 毕云飞黄卫国夏国富王鲁强李明丰杨清河方文秀郭庆洲
Owner CHINA PETROLEUM & CHEM CORP
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