Method for preparing environmentally-friendly rubber oil through solvent refining and hydrofining combination technology

An environmentally friendly rubber oil, hydrogenation refining technology, applied in the direction of hydrogenation treatment process, hydrocarbon oil treatment, petroleum industry, etc. The effect of aromatics retention, etc.

Active Publication Date: 2013-03-06
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The disadvantages of the above-mentioned traditional processes are: they cannot meet the compatibility requirements of rubber oil elastomers, and cannot take into account the yield of the target product and the quality of the product
[0009] American Journal of Industrial Medicine 2003, Volume 5, No. 3, disclosed an article about the Toxicological characteristics of refinery streams used to manufacture lubricating oils (Toxicological characteristics of refinery streams used to manufacture lubricating oils). The experimental research of coating on the above proves that the use of conventional solvent refining process to treat lubricating oil components has a good effect on reducing the induced deformity and variation of lubricating oil components, and even if sulfuric acid refining is used, it cannot reduce the lubricating oil components. The distortion induced by the natural components of the components on the human body, other processes such as solvent dewaxing, hydrofining and clay adsorption refining can not improve the distortion induced by the lubricating oil components on the human body
[0010] For aromatic oil extracted from naphthenic distillates, the structure of the aromatic ring is similar to that of the naphthenic ring. If it is used as a raw material, the combined process of conventi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In the small-scale furfural extraction test and solvent recovery test device with a raw material handling capacity of 1kg / h, the ternary composite solvent extraction test was first carried out. Solvent extraction obtained raffinate oil. Then the extracted oil is used as the raw material for the high-pressure hydrogenation test, and the high-pressure hydrofining test is carried out on a 300ml / h small-scale high-pressure hydrogenation test device.

[0026] The composition of the ternary composite solvent used is: ① 75v% furfural ② 23v% glycerol ③ 2v% NaCl solution with a mass fraction of 13wt%.

[0027] The ternary composite solvent is pumped into the upper edge of the extraction section of the extraction tower packing, and is extracted countercurrently with the naphthenic fraction furfural oil. The temperature gradient of the extraction section is 70 ° C ~ 90 ° C, and the temperature of the top settlement section is 85 ℃±1℃, the temperature of the settling section at th...

Embodiment 2

[0035] The ternary composite solvent extraction test was carried out on the same small-scale furfural extraction test and solvent recovery test device with a raw material processing capacity of 1kg / h, and the ternary composite solvent extraction test was carried out on the same 300ml / h small-scale high-pressure hydrogenation test device. The high-pressure hydrofining test of the raffinate oil that is carried, the raw material oil of test is the same as embodiment 1. The method that the ternary composite solvent and raw oil enter the countercurrent extraction tower, the extraction raffinate and the extraction extraction liquid are drawn out of the extraction tower, and the method that the extraction raffinate reclaims the ternary composite solvent is exactly the same as in Example 1. The method of extracting raffinate into the small-scale high-pressure hydrogenation test device of 300ml / h is also exactly the same as that of Example 1

[0036] The composition of the ternary comp...

Embodiment 3

[0043] The ternary composite solvent extraction test was carried out on the same small-scale furfural extraction test and solvent recovery test device with a raw material processing capacity of 1kg / h, and the ternary composite solvent extraction test was carried out on the same 300ml / h small-scale high-pressure hydrogenation test device. The high-pressure hydrofining test of the raffinate oil that is carried, the raw material oil of test is the same as embodiment 1. The method that the ternary composite solvent and raw oil enter the countercurrent extraction tower, the extraction raffinate and the extraction extraction liquid are drawn out of the extraction tower, and the method that the extraction raffinate reclaims the ternary composite solvent is exactly the same as in Example 1. The method of extracting raffinate into the small-scale high-pressure hydrogenation test device of 300ml / h is also exactly the same as that of Example 1

[0044] The composition of the ternary comp...

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PUM

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Abstract

The invention relates to a method for preparing environmentally-friendly rubber oil through a solvent refining and hydrofining combination technology. Aromatic hydrocarbon extract oil in a vacuum fraction is adopted as a raw material, a ternary composite solvent comprising 60-75% by volume of furfural, 20-35% by volume of a polyhydroxy alcohol or a polyhydroxy alcohol ester, and the balance an aqueous NaCl solution is adopted as a solvent in a solvent extraction segment, and extraction oil is obtained under operation conditions comprising that the top temperature of an extraction tower is 50-100DEG C, wherein the oil-solvent volume ratio is 0.5-3.0:1; and then the extraction oil is hydrofined under a high pressure, wherein the high-pressure hydrogenation treatment conditions comprise that the reaction pressure is 15.0Mpa, the reaction temperature is 330-350DEG C, the reaction air speed is 0.3-1.0h<-1> and the hydrogen-oil ratio is 500-1000:1, and a catalyst is a non-precious metal sulfide hydrogenation treatment catalyst treating Ni-W as a hydrogenation active component. Environmentally-friendly rubber oil with the CA percentage characterizing the aromatic hydrocarbon content of above 16 can be prepared through the method, the content of the polycyclic aromatic hydrocarbons (PCAs) in the rubber oil is less than 3%, and the sum of eight PAHs is less than 10mg/kg.

Description

technical field [0001] The invention relates to a method for refining hydrocarbon oil, in particular to a method for preparing environment-friendly rubber oil for tire rubber and its products by using a combined process of solvent extraction and hydrogenation refining. Background technique [0002] Naphthenic oils have relatively lower wax content, lower pour points, and more naphthenic ring structures than paraffinic oils. Due to these characteristics, it is generally used as an operating oil for elastomers such as rubber. [0003] Natural cycloalkyl fractions, with chromophores, sulfur-containing compounds and other impurities (such as basic nitrogen compounds), of course including symbiotic fused-ring aromatic compounds (PNA), must be effectively removed in order to meet the requirements of rubber processing. oil needs. [0004] The traditional methods of processing naphthenic oil include: solvent deacidification, sulfuric acid clay refining, solvent refining, hydrotrea...

Claims

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Application Information

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IPC IPC(8): C10G67/04C10G67/14C08L21/00C08K5/01
Inventor 吕贞甄新平李静蔡烈奎马莉莉江军平朱路新
Owner PETROCHINA CO LTD
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