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Method for preparing aromatic rubber oil

A technology of aromatic rubber oil and aromatic hydrocarbon, which is applied in the field of preparation of aromatic rubber oil to achieve the effect of lowering the pour point

Active Publication Date: 2012-01-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above method can obtain rubber extender oil with a PCA mass content lower than 3%, this method is only applicable to the lubricating oil fraction obtained from the vacuum distillation of crude oil and the deasphalted oil obtained by solvent deasphalting of vacuum residue oil, and is not applicable to Cases where other oils are used as raw materials

Method used

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  • Method for preparing aromatic rubber oil
  • Method for preparing aromatic rubber oil
  • Method for preparing aromatic rubber oil

Examples

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preparation example Construction

[0014] The invention provides a kind of preparation method of aromatic hydrocarbon rubber oil, and the method comprises the following steps:

[0015] (1) Fully contacting the raw material oil with the extraction solvent to obtain the first extract and the first raffinate, wherein the raw oil is solvent refined extraction oil, and the extraction solvent contains a main solvent and a first anti-solvent , and the content of the main solvent in the extraction solvent is greater than the content of the first anti-solvent;

[0016] (2) Fully contacting the first extract with the second anti-solvent to obtain a second raffinate and a second extract;

[0017] (3) reclaim solvent from described second raffinate, obtain aromatic hydrocarbon rubber oil;

[0018] Wherein, the solubility of aromatic hydrocarbons in the main solvent is greater than the solubility of alkanes in the anti-solvent, the solubility of aromatic hydrocarbons or alkanes in the anti-solvent is less than the solubili...

Embodiment 1

[0046] This embodiment is used to illustrate the preparation method of aromatic rubber oil provided by the present invention.

[0047] The extracted oil obtained from the light deoiling of intermediate base crude oil through solvent refining is used as the raw material oil (see Table 1 for the properties of the raw material oil), and is contacted with the extraction solvent in a glass three-necked flask (3000mL) for the first extraction. The extraction solvent and The total feed amount of raw material oil is 1500g.

[0048] according to figure 1 Process for solvent extraction to produce aromatic rubber oil. The contact condition of extraction solvent and stock oil is: take furfural and water as extraction solvent (in the extraction solvent, each component weight percentage is: furfural 98.0% by weight, water 2.0% by weight), and the agent-oil ratio is 3.0: 1 (the weight ratio of extraction solvent to raw oil, the same below), the contact temperature is 85°C, the contact time...

Embodiment 2

[0053] This embodiment is used to illustrate the preparation method of aromatic rubber oil provided by the present invention.

[0054] Solvent extraction is carried out on the same extraction device as in Example 1 to prepare aromatic rubber oil, and the oil extracted from the fourth-line solvent-refined intermediate base crude oil is used as the raw material oil. The properties of the raw material oil are shown in Table 1. The extraction solvent and the raw material oil The total feed amount was 1500 g.

[0055] according to figure 1 Process for solvent extraction to produce aromatic rubber oil. The extraction conditions are: taking N-methylpyrrolidone and water as the extraction solvent (the weight percentage of each component in the extraction solvent is: N-methylpyrrolidone 96.0% by weight, water 4.0% by weight), and the agent-oil ratio is 2.0:1, the contact temperature is 63°C, the contact time is 30 minutes, the settling temperature is 63°C, and the settling time is 30...

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Abstract

The invention discloses a method for preparing aromatic rubber oil, which comprises: fully contacting raw material oil and an extract solvent to obtain first extract ad first raffinate, wherein the raw material oil is solvent refining extract oil, the extract solvent mainly comprises a primary solvent and a first counter solvent, and the primary solvent content in the extract solvent is higher than the content of first counter solvent in the extract solvent; fully contacting the first extract with a second counter solvent to obtain second raffinate and second extract; and recovering second raffinate from the second raffinate to obtain the aromatic rubber oil. The total content of eight polycyclic aromatic hydrocarbons (PAHs) in the aromatic rubber oil prepared by the method provided by the invention is low and meets the requirement of 2005 / 69 / EC instruction of the European Union, the mass content of polycyclic aromatic hydrocarbon (PCA) is less than 3 percent, and because of the low saturated hydrocarbon content, the pour point of the aromatic rubber oil is low.

Description

technical field [0001] The invention relates to a preparation method of aromatic rubber oil. Background technique [0002] After the rubber is filled with oil, the processability and use performance are improved, the output is increased, and the production cost is reduced. At present, the largest amount of rubber extender oil is aromatic or high-aromatic rubber extender oil for tires. Domestically, it is mainly produced from reverse sequence lubricant solvent extraction oil and catalytic cracking clarified oil. The content of polycyclic aromatic hydrocarbons and colloids in the extender oil is low. Very high, usually containing 10-25% polycyclic aromatic hydrocarbons (PCA) by mass. Among them, PCA refers to polycyclic aromatic hydrocarbons with three or more rings. [0003] At present, with the increasingly stringent environmental protection regulations, PCA has become a world-recognized organic pollutant. As early as 1994, the EU chemical classification and labeling agen...

Claims

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Application Information

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IPC IPC(8): C10G53/04C08K5/01
Inventor 杨文中丁洛王玉章管翠诗陈国成
Owner CHINA PETROLEUM & CHEM CORP
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