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Method for producing environmental-friendly aromatic oil

A production method and technology of aromatic oil, applied in the production field of environmentally friendly aromatic oil, can solve problems such as low extraction efficiency, difficulty in ensuring sufficient contact between solvent and material, failure to achieve extraction effect, etc., achieve high purity, good quality, and improve production efficiency effect

Active Publication Date: 2014-08-13
苏州久泰集团有限公司
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  • Description
  • Claims
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Problems solved by technology

At present, TDAE is supplied on the market by Hansun-Luoshengtai Group Company of Germany, Sun Oil of the United States, and New Oil of Japan. There are only small-scale tests and patent reports in China, and no industrial production so far.
[0003] In addition, in the process of producing environmentally friendly aromatic oil, extraction towers are often used, and the existing extraction towers basically use traditional packed extraction towers , and due to the high viscosity of the material, it is difficult to ensure sufficient contact between the solvent and the material in this packed extraction tower, which makes the extraction efficiency of this tower low and cannot achieve the ideal extraction effect

Method used

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  • Method for producing environmental-friendly aromatic oil
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  • Method for producing environmental-friendly aromatic oil

Examples

Experimental program
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Effect test

Embodiment 1

[0019] 1) Using JT-3 aromatic hydrocarbon oil as raw material and furfural as solvent, extract in the extraction tower, the upper part obtains the raffinate; the lower part obtains the extracted liquid, and the raffinate is heated by heat transfer oil under negative pressure to remove furfural , which is the raffinate oil; after the extract liquid is recovered by three-effect evaporation to recover furfural, it is the extract oil. The extraction conditions are as follows: the temperature at the top of the tower is 80°C, the temperature at the bottom of the tower is 70°C, the rotational speed of the extraction tower is 30 rpm, and the solvent-oil ratio is 0.6:1.

[0020] 2) The raffinate oil is refined by an adsorbent (FX-40) to obtain an environmentally friendly aromatic oil. The refining conditions are as follows: the bed temperature of the adsorption tower is 100°C, and the feed space velocity is 0.5h-1.

Embodiment 2

[0022] 1) Using JT-3 aromatic hydrocarbon oil as raw material and furfural as solvent, extract in the extraction tower, the upper part obtains the raffinate; the lower part obtains the extracted liquid, and the raffinate is heated by heat transfer oil under negative pressure to remove furfural , which is the raffinate oil; after the extract liquid is recovered by three-effect evaporation to recover furfural, it is the extract oil. The extraction conditions are as follows: the temperature at the top of the tower is 70°C, the temperature at the bottom of the tower is 58°C, the rotation speed of the extraction tower is 45 rpm, and the solvent-oil ratio is 1.3:1.

[0023] 2) The raffinate oil is refined by an adsorbent (FX-40) to obtain an environmentally friendly aromatic oil. The refining conditions are as follows: the bed temperature of the adsorption tower is 130°C, and the feed space velocity is 0.75h-1.

Embodiment 3

[0025] 1) Using JT-3 aromatic hydrocarbon oil as raw material and furfural as solvent, extract in the extraction tower, the upper part obtains the raffinate; the lower part obtains the extracted liquid, and the raffinate is heated by heat transfer oil under negative pressure to remove furfural , which is the raffinate oil; after the extract liquid is recovered by three-effect evaporation to recover furfural, it is the extract oil. The extraction conditions are as follows: the temperature at the top of the tower is 62°C, the temperature at the bottom of the tower is 46°C, the rotation speed of the extraction tower is 80 rpm, and the solvent-oil ratio is 2:1.

[0026] 2) The raffinate oil is refined by an adsorbent (FX-40) to obtain an environmentally friendly aromatic oil. The refining conditions are as follows: the bed temperature of the adsorption tower is 160° C., and the feed space velocity is 1.0 h −1 .

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Abstract

The invention relates to a production method of environmentally friendly aromatic oil, which uses JT-3 aromatic oil produced by Suzhou Jiutai Group Co., Ltd. as a raw material, uses furfural as a solvent, and uses a multi-stage extraction tower to extract it, and the raffinate flowing out from the top of the tower The raffinate oil is obtained after heating the heat conduction oil to remove furfural, and the obtained raffinate oil is adsorbed by an adsorption tower containing an adsorbent to remove various polycyclic aromatic hydrocarbons, and an environmentally friendly aromatic oil product is obtained. The present invention adopts the multi-stage extraction tower to replace the existing packed tower as the extraction tower, which significantly improves the production efficiency; after the extraction is completed, the method of adsorbent adsorption separation is used to remove various polycyclic aromatic hydrocarbons in the raffinate oil, so that The obtained environmentally friendly aromatic oil product has higher purity and better quality.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and in particular relates to a production method of environment-friendly aromatic oil. Background technique [0002] In order to protect the environment and human health, the 2005 / 69 / EC Directive signed by the European Parliament and the European Council in Strasbourg, France on November 16, 2005 will come into effect on January 1, 2010. Directives for direct investment Aromatic oils in the market or aromatic oils used in the manufacture of tires have made specific regulations: 1. The mass percentage of polycyclic aromatic compounds (PCA) determined according to the IP346 method is not more than 3%; 2. Benzo[ The content of 8 specific polycyclic aromatic hydrocarbons such as a] anthracene is not more than 10 mg / kg, and the content of benzo[a]pyrene is not more than 1 mg / kg. Both the United States and Japan have also limited the relevant standards for the content of polycyclic aromatic hydro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G53/08C08K5/01
Inventor 冯佰荣马剑峰
Owner 苏州久泰集团有限公司
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