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Low-viscosity white oil

A low-viscosity, white oil technology, applied in the field of white oil without carbon deposits, low viscosity and no foam, to achieve the effect of reducing carbon deposits and improving oxidation stability

Active Publication Date: 2014-12-24
TIANJIN KAIWEI & YONGU UNITED CHEM +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

White oil quality standards generally do not put forward separate requirements for the two indicators of foam and carbon deposits, but with the rapid development of some special industries, existing products can no longer meet the needs, and higher requirements are put forward for the quality of white oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] The chemical principle and the technology of the preparation method of white oil of the present invention are analyzed below:

[0017] The hydrogenation reaction removes harmful impurities such as aromatics, sulfur, nitrogen, etc., and the reaction formula is as follows:

[0018] 1 Aromatic saturation

[0019]

[0020] 2 cycloalkane saturated

[0021]

[0022] 3 nitrogen removal

[0023]

[0024] 4 sulfur removal

[0025]

[0026] After hydrogenation, it is separated by molecular sieves to remove isomeric components. Here is a purely physical process, no chemical reactions are involved. Splitting is to pursue the uniformity of material composition. The split tool is preferably 5A molecular sieve to ensure the quality of the product, and other zeolites with uniform pore size and size around 5A can also be used.

Embodiment 1

[0028] (a) Introduce the low-viscosity white oil into the hydrogenation unit, fully remove aromatics, S, N and other impurities in the white oil after fully reacting at a temperature of 200°C and 16 MPa; (b) pump the hydrogenated white oil Sent to the rectifying tower, the tower top operating pressure of the rectifying tower is normal pressure, and the tower top operating temperature is 240 ℃; Heating in the isomerization resolution device is used to split molecular normal isomers, and the separated target white oil is obtained at the top of the normal isomerization resolution device.

[0029] Described target white oil comprises following alkane component, is by weight percentage: C 13 and C 16 10%, C 14 80%, C 15 10%.

[0030] The normal mass content in the target white oil is ≥80%, and the product density is 0.770-0.780. The foam test shows that the foam disappears in less than 2 seconds, and there is no carbon deposit after burning for 48 hours.

Embodiment 2

[0032] (a) Introduce the low-viscosity white oil into the hydrogenation unit, fully remove the aromatics, S, N and other impurities in the white oil after fully reacting at a temperature of 210°C and 17MPa; (b) pump the hydrogenated white oil Sent to the rectifying tower, the tower top operating pressure of the rectifying tower is normal pressure, and the tower top operating temperature is 300 ℃; Heating in the isomerization resolution device is used to split molecular normal isomers, and the separated target white oil is obtained at the top of the normal isomerization resolution device.

[0033] Described target white oil comprises following alkane component, is by weight percentage: C 13 and C 16 5%, C 14 80%, C 15 15%.

[0034] The normal structure weight content in the target white oil is more than 85%, the product density is 0.770-0.780, the foam test is carried out, the foam disappears in less than 2 seconds, and there is no carbon deposit after burning for 48 hours....

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Abstract

The invention discloses a low-viscosity white oil which comprises the following alkanes components in percentage by weight: 5-15% of C13 and C16, 70-90% of C14 and 5-15% of C15. The mass content of normal paraffin hydrocarbons in the alkane components is greater than or equal to 80%. After the low-viscosity white oil is intensely oscillated and stopped, the foam can disappear within two seconds, and no carbon deposit is generated after the white oil is continuously combusted for 48 hours.

Description

technical field [0001] The invention relates to a low-viscosity white oil, in particular to a low-viscosity white oil without foam and carbon deposit. Background technique [0002] At present, the low-viscosity white oil produced at home and abroad has the disadvantages of easy foaming and carbon deposition during combustion. White oil quality standards generally do not put forward separate requirements for the two indicators of foam and carbon deposits. However, with the rapid development of some special industries, existing products can no longer meet the needs, and higher requirements are put forward for the quality of white oil. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a low-viscosity white oil without foam and carbon deposition that can meet the needs of the industry. [0004] A kind of low-viscosity white oil of the present invention, it comprises following alkane component, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/14
Inventor 程迎良刘恒权王飙杜健郭泽
Owner TIANJIN KAIWEI & YONGU UNITED CHEM
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