Preparation method of lube base oil

A lubricating oil base oil and raw material oil technology, which is applied in chemical instruments and methods, petroleum industry, and hydrocarbon oil treatment, can solve the problems of different catalyst combinations and loading methods that are rarely reported, and achieve the effect of increasing yield

Active Publication Date: 2017-10-24
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0009] It can be seen that in the prior art, there are many disclosures on the composition and formula of isomerizati

Method used

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  • Preparation method of lube base oil
  • Preparation method of lube base oil

Examples

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[0031] The present invention provides a method for preparing lubricating base oil. The method includes: contacting feedstock oil with at least two isomerization catalysts including molecular sieve and group VIII noble metals in a reactor and performing a hydroisomerization reaction to obtain Lubricating oil base oil; wherein, according to the flow direction of the feedstock oil, at least two isomerization catalysts in the reactor are set such that the diameter of the isomerization catalyst located downstream is larger than the diameter of the isomerization catalyst located upstream path.

[0032] According to the present invention, according to the flow direction of the feedstock oil (the feedstock oil can flow from top to bottom, from bottom to top, or alternately from top to bottom), at least two isomerization catalysts can be filled in the reactor by filling only one reactor , Multiple reactors can also be packed; if only one reactor is packed, one bed can be packed with only ...

Example

[0072] Preparation Example 1

[0073] (1) Take 30g (on a dry basis, the same below) ZSM-12 molecular sieve (twelve-membered ring molecular sieve, with a silicon-to-aluminum ratio of 80) and 70g (on a dry basis, the same below) alumina (based on the Provided in the form of boehmite, the same below) is prepared by dry mixing and extruding into a cylindrical wet strip with a diameter of 1.4 mm. The wet bar was dried at 120°C for 4 hours, and then calcined at 500°C for 6 hours to obtain a catalyst carrier. The water absorption of the catalyst carrier was determined to be 0.9. The measurement method of water absorption is: put 100g carrier in a beaker, add 2 times deionized water to soak for 2h, filter out excess water and weigh the wet bar, subtract 100g from the wet bar weight and divide by 100 to obtain the water absorption rate .

[0074] (2) Dissolve 2.29g zinc nitrate hexahydrate in water, then add water to make the volume up to 100mL. The resulting solution was used to impreg...

Example

[0077] Preparation Example 2

[0078] The method of Preparation Example 2 is basically the same as that of Preparation Example 1, except that the diameter of the cylindrical wet bar in step (1) is 1.6 mm, and the catalyst B-2 prepared in Preparation Example 2 is shown in the composition Table 1.

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Abstract

The invention discloses a preparation method of lube base oil. The preparation method comprises the following steps: enabling raw material oil to be in contact with at least two isomerization catalysts respectively comprising a molecular sieve and VIII family noble metal in a reactor and performing hydroisomerization reaction to obtain the lube base oil; according to the flowing direction of the raw material oil, the at least two isomerization catalysts in the reactor are set as that the diameter of the isomerization catalyst positioned at the downstream is greater than that of the isomerization catalyst positioned at the upstream. The preparation method disclosed by the invention is adopted for preparing the lube base oil, so that the yield of the lube base oil can be improved; meanwhile, the pour point of the lube base oil is reduced, and the viscosity index of the lube base oil is improved.

Description

technical field [0001] The invention relates to a preparation method of lubricating oil base oil. Background technique [0002] With the development of the automobile industry in the direction of high speed, energy saving, environmental protection and long oil change period, higher requirements are put forward for the quality of lubricating oil products. Hydrogenation upgrade to solve. After decades of development, lubricating oil hydrogenation technology has a number of mature technologies, such as hydrotreating, hydrofining, hydrodecondensation, etc., but there are still two major problems that plague the improvement of lubricating oil quality, namely isomerization Chemical technology and lubricant supplement refinement. [0003] Due to the different pour point depressing methods, the pour point, yield and viscosity index of base oil products are quite different. Compared with solvent dewaxing, hydroisomerization technology can achieve better pour point depressing effec...

Claims

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Application Information

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IPC IPC(8): C10G45/64B01J29/74
CPCB01J29/7469B01J2229/18C10G45/64C10G2300/1022C10G2300/70
Inventor 毕云飞夏国富李明丰杨清河李洪宝郭庆洲方文秀
Owner CHINA PETROLEUM & CHEM CORP
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