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Base oil formulations

A technology of base oils and formulations, applied in base materials, petroleum industry, lubricating compositions, etc.

Inactive Publication Date: 2010-11-17
SHELL INT RES MAATSCHAPPIJ BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] But it has now surprisingly been found that when certain types of base oils are blended together, the resulting blends can have better properties than would be predicted from the properties of the individual components (especially in terms of their viscometric and oxidation stability), but still have acceptable, often lower than predicted volatility

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0136] "Undertreated" mineral derived Group I base oils can be blended with Group II / III Fischer-Tropsch derived light base oils (FTBO) to produce the formulations of the present invention. The mineral oils may then, for example, only be processed to a viscosity index of about 93 or 92, whereas more typical Group I base oils are processed to a viscosity index of at least 95.

[0137] In this experiment, the undertreated Group I mineral base oil used had a VK 100 (ASTM D-445) of 5.341 centistokes, a VK 40 (ASTM D-445) of 33.02 centistokes, and a viscosity index of 92 (ASTM D-445). -2270). Has an estimated total polar content of 32.8 wt%. The Fischer-Tropsch base oil has a VK 100 of 2.68 centistokes and a viscosity index of 119. The two components were blended in a weight ratio of 71.0:29.0 to produce a VK 100 with a total of about 4 centistokes.

[0138] The experimentally determined properties of this blend are shown in Table 1 below. The table also shows the relevant prop...

Embodiment 2

[0147] By combining 22.7 wt% of a Fischer-Tropsch derived light base oil (VK 100 approximately 3 centistokes) with 77.3 wt% of a commercially available standard Group I mineral base oil (HVI-65, available from Shell Pernis Refinery, Rotterdam, The Netherlands, VK 100 approximately 5 centistokes, viscosity index 100) were blended together to make the base oil formulations of the present invention.

[0148] Fischer-Tropsch derived base oils (FTBO) are produced using processes of the general type described above, including relatively severe hydrotreating and catalytic dewaxing steps. Its properties are shown in Table 2 below.

[0149] Table 2

[0150] nature

[0151] nature

[0152] The properties of the base oil blends with a VK 100 of about 4 centistokes are shown in Table 3 below. Also shown in the table are the desired target properties for the blends, which are those of a standard straight run 4 centistoke Group I mineral base oil.

[0153] table 3

...

Embodiment 3

[0158] Additional base oil formulations of the present invention were prepared by blending together the following:

[0159] B-1: 41 wt% of the Fischer-Tropsch derived light base oil used in Example 1 and Example 2, and 59 wt% of MO-1 commercially available standard mineral derived Group II base oil (VK100 approx. 6 centistokes, Star 6 was obtained from Motiva LLC, Port Arthur, Texas, USA) to produce a blend with a total VK 100 of approximately 4 centistokes.

[0160] B-2: 44 wt% of Fischer-Tropsch derived light base oil used in Example 1 and Example 2, and 56 wt% of commercially available standard mineral derived Group II base oil MO-2 (VK 1006.85 centstokes, Star 6 was obtained from Motiva LLC, Port Arthur, Texas, USA), and was also used to produce a blend with a total VK 100 of approximately 4 centistokes.

[0161] The properties of the two blends B-1 and B-2, as well as their respective components are shown in Table 4 below. Also shown in the table are the desired target ...

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Abstract

Base oil formulation containing a mineral derived base oil and a Fischer-Tropsch derived light base oil. The Fischer-Tropsch oil may be used to upgrade an under- processed mineral oil. The Fischer-Tropsch oil causes less of an increase in volatility than predicted by theory. It may therefore be used to improve a property of a base oil formulation containing a mineral derived base oil, the property being selected from cold flow properties, viscosity profile and oxidative stability, whilst still achieving a target maximum volatility X for the formulation, by adding to the formulation a concentration c of a Fischer-Tropsch derived light base oil, wherein c is higher than the maximum concentration c' of the Fischer-Tropsch derived light base oil which theory would predict could be added without increasing the volatility of the formulation above the target maximum X.

Description

technical field [0001] The present invention relates to base oil formulations and their preparation and use, and to the use of certain types of oils in base oil formulations for new purposes. Background technique [0002] It is known to use heavy hydrocarbon oils as base oils for a variety of applications, for example as base oils for lubricating formulations, electrical insulating oils and hydraulic fluids. Such base oils are typically mineral oils, eg derived from petroleum. [0003] It is also known to use Fischer-Tropsch synthesis to prepare base oils. The Fischer-Tropsch condensation process is carried out in the presence of a suitable catalyst and typically at elevated temperature (e.g. 125-300°C, preferably 175-250°C) and / or high pressure (e.g. 5-100 bar, preferably 12-50 bar) The conversion of carbon monoxide and hydrogen to long-chain hydrocarbons, usually paraffins. [0004] The Fischer-Tropsch process can be used to produce a variety of hydrocarbon fuels, inclu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M111/04C10M169/04C10N20/02C10N30/02C10N30/10C10N30/06
CPCC10M169/04C10M2205/17C10N2230/10C10N2230/02C10M2205/173C10N2230/06C10N2230/74C10M111/04C10M2203/1006C10N2220/022C10N2020/02C10N2030/02C10N2030/06C10N2030/10C10N2030/74
Inventor 大卫·约翰·威德路克
Owner SHELL INT RES MAATSCHAPPIJ BV