Production of high viscosity food grade white oil

A high-viscosity, white oil technology, used in the petroleum industry, refined hydrocarbon oil, hydrocarbon distillation, etc., can solve the problems of increasing pressure, reducing space velocity, difficult to produce viscous food-grade white oil, etc., to reduce pressure, improve The effect of airspeed

Inactive Publication Date: 2004-07-07
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0009] Looking at the above-mentioned prior art, the one-stage method can only produce industrial-grade white oil; and although the two-stage method can produce food-grade white oil, it needs two different hydrogenation catalysts, and it is difficult to produce high-viscosity white oil in industrial practice. Food-grade white oil, because to produce high-viscosity white oil, the space velocity must be greatly reduced and the pressure must be increased at the same time, which brings great difficulty to industrial control, and the flash point of heavy white oil products is not easy to pass

Method used

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  • Production of high viscosity food grade white oil
  • Production of high viscosity food grade white oil

Examples

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Effect test

Embodiment 1

[0044] In this embodiment, naphthenic lubricating oil base oil is used as raw material, and its properties are shown in Table 1.

[0045] The catalyst used is a hydrogenation catalyst with platinum-palladium as an active component supported on a silicon oxide-alumina carrier, wherein the platinum accounts for 0.10% of the total weight of the catalyst, and the palladium accounts for 0.25% of the total weight of the catalyst. The catalyst is used in the reduced state.

[0046] light white oil raw material

[0047] The processing process of ultra-high viscosity food-grade white oil refers to the first technological process in the accompanying drawing, and the steps are as follows:

[0048] 1. Hydrogenate the light white oil raw material to obtain light (No. 10) white oil that meets the food grade white oil standard. The hydrogenation conditions are as follows: pressure 15.0MPa, reaction temperature 230°C, volume space velocity 0.8h -1 , The volume ratio of hydrogen t...

Embodiment 2

[0058] In this example, an ultra-high viscosity naphthenic lubricating oil base oil is used as a raw material, and its properties are shown in Table 5.

[0059] The catalyst used is a hydrogenation catalyst with platinum-palladium as an active component supported on a silica-alumina carrier, wherein the platinum accounts for 0.13% of the total weight of the catalyst, and the palladium accounts for 0.30% of the total weight of the catalyst. The catalyst is used in the reduced state.

[0060] The processing process of ultra-high viscosity food-grade white oil refers to the first technological process in the accompanying drawing, and the steps are as follows:

[0061] 1. Hydrogenate the light white oil raw material to obtain light (No. 10) white oil that meets the food-grade white oil standard. The hydrogenation conditions are as follows: pressure 15.0MPa, reaction temperature 240°C, volume space velocity 0.8h -1 , The volume ratio of hydrogen to oil is 500:1. The properties of...

Embodiment 3

[0072] In this embodiment, the same naphthenic lubricating oil base oil as in Embodiment 1 is used as raw material.

[0073] The catalyst used is a hydrogenation catalyst with platinum-palladium as an active component supported on a silica-alumina carrier, wherein the platinum accounts for 0.22% of the total weight of the catalyst, and the palladium accounts for 0.26% of the total weight of the catalyst. The catalyst is used in the reduced state.

[0074] The processing process of ultra-high viscosity food-grade white oil refers to the first technological process in the accompanying drawing, and the steps are as follows:

[0075] 1. Hydrogenate the light white oil raw material to obtain light (No. 10) white oil that meets the food-grade white oil standard. The hydrogenation conditions are as follows: pressure 15.0MPa, reaction temperature 240°C, volume space velocity 0.8h -1, The volume ratio of hydrogen to oil is 500:1. The properties of the light white oil product after hy...

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Abstract

A process for preparing the edible or medicinal high-viscosity white oil includes such steps as proportionally mixing the light white oil with the heavy white oil whose moving viscosity at 40 deg.C is 40-500 sq.mm / s, hydrogenating reacting, and distilling or stripping or flash distilling. Its preferable catalyst is the noble (or non-noble) metal catalyst carried by aluminium oxide or silicon oxide-aluminium oxide. Its advantages are simple process, low pressure and high space speed.

Description

technical field [0001] The invention relates to a method for producing high-viscosity food-grade white oil. More specifically, the present invention relates to a method for producing high-viscosity or ultra-high-viscosity food-grade white oil by hydrogenation process using lubricating oil base oil as raw material. Background technique [0002] White oil refers to highly refined mineral oil, which has the characteristics of water white, transparent, low content of sulfur, nitrogen, oxygen heterocyclic compounds, aromatic hydrocarbons and other impurities, and is widely used in the industrial field and in the manufacture of daily chemicals. Applications. Different varieties of white oils can generally be divided into low viscosity, medium viscosity or high viscosity white oils according to their kinematic viscosity at 40°C. The higher the viscosity, the more difficult it is to process. White oil can also be divided into industrial grade, cosmetic grade and food / pharmaceutica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G7/00C10G45/00
Inventor 刘广元董维正郭庆洲王雪梅王鲁强
Owner CHINA PETROLEUM & CHEM CORP
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