CN102146297A - Method for producing environmental-friendly aromatic oil - Google Patents
Method for producing environmental-friendly aromatic oil Download PDFInfo
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- CN102146297A CN102146297A CN2011100521221A CN201110052122A CN102146297A CN 102146297 A CN102146297 A CN 102146297A CN 2011100521221 A CN2011100521221 A CN 2011100521221A CN 201110052122 A CN201110052122 A CN 201110052122A CN 102146297 A CN102146297 A CN 102146297A
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Abstract
The invention relates to a method for producing environmental-friendly aromatic oil. In the method, JT-3 aromatic oil produced by Suzhou Jiutai Group Corporation is used as the raw material; and furfural is used as a solvent. The method comprises the following steps of: carrying out extraction on the JT-3 aromatic oil and the furfural by a multistage extraction tower; heating raffinate outflowing from the top of the tower by heat conducting oil to remove furfural and obtain raffinate oil; and adsorbing the raffinate oil by an adsorption tower containing an adsorbent to remove various polycyclic aromatic hydrocarbons in the raffinate oil so as to obtain the environmental-friendly aromatic oil. In the method, the multistage extraction tower is adopted to replace the existing packed tower as the extraction tower, so that the production efficiency is obviously improved; and after the extraction is completed, various polycyclic aromatic hydrocarbons in the raffinate oil are removed through an adsorption and separation method by the adsorbent, so that the environmental-friendly aromatic oil product has higher purity and higher quality.
Description
Technical field
The invention belongs to petrochemical industry, be specifically related to a kind of production method of environment-friendly aromatic oil.
Background technology
In order to protect environment and human health, parliament of European Union and EU Council will come into force on January 1st, 2010 in the 2005/69/EC of Strasbourg, FRA signature instruction on November 16th, 2005, instruction to the aromatic hydrocarbon oil that directly puts goods on the market or the aromatic hydrocarbon oil that is used to make tire made concrete regulation: 1, the quality percentage composition of the polycyclic aromatic hydrocarbon compounds of measuring according to the IP346 method (PCA) is not more than 3%; 2,8 kinds of specific polycyclic aromatic hydrocarbon contents such as benzo [a] anthracene are not more than 10mg/kg in the tire, and wherein the content of benzo [a] pyrene is not more than 1mg/kg.The U.S. and Japan have also all limited the relevant criterion of condensed-nuclei aromatics content in the tire.Use environment-friendly aromatic oil (TDAE) to reduce to use that carcinogenic substance is the direction of aromatic hydrocarbon oil development to the harm of human body in the rubber process.At present, the young oil of the solar oil of Han Sheng-Luo Shengtai group company that Germany is arranged of supply TDAE, the U.S., Japan on the market, China has only the report of lab scale and patent, does not have suitability for industrialized production so far.
In addition, in the technological process of producing environment-friendly aromatic oil, often need use extraction tower, existing extraction tower all adopts traditional packed extraction tower basically, and because the viscosity of material is bigger, this packed extraction tower is difficult to guarantee fully contacting of solvent and material, makes that the extraction efficiency of this tower is lower, can not reach the ideal effect of extracting.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, and a kind of production method of environment-friendly aromatic oil is provided, its production efficiency height, the aromaticity content height of gained environment-friendly aromatic oil, with rubber compatibility good and nontoxicity and carinogenicity.
For solving above technical problem, the present invention takes following technical scheme:
A kind of production method of environment-friendly aromatic oil comprises the steps:
(1) the JT-3 aromatic hydrocarbon oil with Suzhou Jiutai Group's production and selling is a raw material, and furfural is a solvent, in extraction tower the JT-3 aromatic hydrocarbon oil is carried out extracting, and the extraction tower tower top temperature is 62 ℃ ~ 80 ℃, and effluent liquid is a raffinate; The extraction tower column bottom temperature is 46 ~ 70 ℃, and effluent liquid is an Extract; The extraction tower rotating speed is 30 ~ 80 rev/mins, and agent-oil ratio is 0.6 ~ 2:1; Described extraction tower is the multi-stage solvent extraction tower;
(2) step (1) gained raffinate obtains to raffinate oil under negative pressure after heat-conducting oil heating is removed furfural, gained is raffinated oil send into the adsorption tower absorption that contains sorbent material, obtains environment-friendly aromatic oil; The adsorption tower bed temperature is 100 ℃ ~ 160 ℃, and the charging air speed is 0.5 ~ 1 o'clock
-1
The quality index of above-mentioned JT-3 aromatic hydrocarbon oil is referring to table 1;
Described multi-stage solvent extraction tower is known, and it can make material be dispersed into more evenly and rational drop, external phase is fully contacted with disperse phase, thereby reach the purpose of finishing a plurality of extraction processes simultaneously, and very high extraction efficiency is arranged.At present, the present invention still belongs to the production preparation that this kind multi-stage solvent extraction tower is applied to environment-friendly aromatic oil the first.
Preferably, described sorbent material can be selected from gac, molecular sieve or zeolite, and further, described sorbent material is selected from gac FX-40 sorbent material.
As a further improvement on the present invention, described production method can also comprise step (3): after triple-effect evaporator steams furfural, must extract the Extract of step (1) gained out oil; The furfural that is steamed is sent in the extraction tower again and is used as solvent.
Above-mentioned triple-effect evaporator, in fact be the combination of three vaporizers, its principle is: the secondary steam that first vaporizer is produced is used as heating source once more earlier, introduce another vaporizer, as long as pressure and solution boiling point in the control vaporizer, make its suitable reduction, the secondary steam that then can utilize first vaporizer to produce heats.At this moment, condensation place of first vaporizer is exactly heating place of second vaporizer, and this is the multiple-effect evaporation principle.Each vaporizer is called an effect, and the vaporizer that steam feeds at first is first effect, and the vaporizer that secondary steam fed is second effect, by that analogy.The vaporization efficiency of this multiple-effect evaporator exceeds much than common vaporizer, and this also makes the middle solvent recovering yield of step (3) greatly increase.
Because the enforcement of above technical scheme, the present invention compared with prior art has following advantage:
The production method of environment-friendly aromatic oil of the present invention adopts the multi-stage solvent extraction tower to replace existing packing tower as extraction tower, has significantly improved production efficiency; After extracting was finished, the isolating method of employing adsorbents adsorb was removed the multiple polycyclic aromatic hydrocarbons in raffinating oil, and made the purity height of gained environment-friendly aromatic oil production, better quality.
Description of drawings
Fig. 1 is the production technique synoptic diagram of environment-friendly aromatic oil of the present invention.
Embodiment
The present invention will be further described in detail below in conjunction with accompanying drawing and specific embodiment, but be not limited to these embodiment.
Embodiment 1
1) being raw material with the JT-3 aromatic hydrocarbon oil, is solvent with the furfural, carries out extracting in extraction tower, and top obtains raffinate; The bottom obtains Extract, and raffinate after heat-conducting oil heating is removed furfural, is and raffinates oil under negative pressure; Extract is and extracts oil out after furfural is reclaimed in triple effect evaporation.Described extracting condition is: tower top temperature is 80 ℃, and column bottom temperature is 70 ℃, and the extraction tower rotating speed is 30 rev/mins, and agent-oil ratio is 0.6:1.
2) described raffinating oil through the refining environment-friendly aromatic oil that obtains of sorbent material (FX-40).Described purification condition is: the adsorption tower bed temperature is 100 ℃, and the charging air speed is 0.5h-1.
Embodiment 2
1) being raw material with the JT-3 aromatic hydrocarbon oil, is solvent with the furfural, carries out extracting in extraction tower, and top obtains raffinate; The bottom obtains Extract, and raffinate after heat-conducting oil heating is removed furfural, is and raffinates oil under negative pressure; Extract is and extracts oil out after furfural is reclaimed in triple effect evaporation.Described extracting condition is: tower top temperature is 70 ℃, and column bottom temperature is 58 ℃, and the extraction tower rotating speed is 45 rev/mins, and agent-oil ratio is 1.3:1.
2) described raffinating oil through the refining environment-friendly aromatic oil that obtains of sorbent material (FX-40).Described purification condition is: the adsorption tower bed temperature is 130 ℃, and the charging air speed is 0.75h-1.
1) being raw material with the JT-3 aromatic hydrocarbon oil, is solvent with the furfural, carries out extracting in extraction tower, and top obtains raffinate; The bottom obtains Extract, and raffinate after heat-conducting oil heating is removed furfural, is and raffinates oil under negative pressure; Extract is and extracts oil out after furfural is reclaimed in triple effect evaporation.Described extracting condition is: tower top temperature is 62 ℃, and column bottom temperature is 46 ℃, and the extraction tower rotating speed is 80 rev/mins, and agent-oil ratio is 2:1.
2) described raffinating oil through the refining environment-friendly aromatic oil that obtains of sorbent material (FX-40).Described purification condition is: the adsorption tower bed temperature is 160 ℃, and the charging air speed is 1.0h-1.
Embodiment 4
The quality index of environment-friendly aromatic oil is as shown in table 2;
The test result of embodiment 1,2 and 3 gained environment-friendly aromatic oils is listed in table 3;
The quality index of table 1 JT-3 aromatic hydrocarbon oil
The quality index of table 2 environment-friendly aromatic oil
Table 3 embodiment 1,2 and 3 environment-friendly aromatic oil properties
CA, CP, CN. refer to that respectively fragrant carbon number in the average molecular structure, alkane carbon number and cycloalkanes carbon number account for the percentage ratio of total carbon number.
From the data of above embodiment gained environment-friendly aromatic oil as can be seen, the prepared environment-friendly aromatic oil quality of production method of the present invention is qualified fully, and the present invention is a production method that can realize the environment-friendly aromatic oil of suitability for industrialized production that is worthy to be popularized very much.
More than the present invention has been done detailed description; its purpose is to allow the personage that is familiar with this art can understand content of the present invention and is implemented; can not limit protection scope of the present invention with this; all equivalences of doing according to spirit of the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (4)
1. the production method of an environment-friendly aromatic oil is characterized in that: comprise the steps:
(1) the JT-3 aromatic hydrocarbon oil with Suzhou Jiutai Group's production and selling is a raw material, and furfural is a solvent, in extraction tower the JT-3 aromatic hydrocarbon oil is carried out extracting, and the extraction tower tower top temperature is 62 ℃ ~ 80 ℃, and effluent liquid is a raffinate; The extraction tower column bottom temperature is 46 ~ 70 ℃, and effluent liquid is an Extract; The extraction tower rotating speed is 30 ~ 80 rev/mins, and agent-oil ratio is 0.6 ~ 2:1; Described extraction tower is the multi-stage solvent extraction tower;
(2) step (1) gained raffinate obtains to raffinate oil under negative pressure after heat-conducting oil heating is removed furfural, gained is raffinated oil send into the adsorption tower absorption that contains sorbent material, obtains environment-friendly aromatic oil; The adsorption tower bed temperature is 100 ℃ ~ 160 ℃, and the charging air speed is 0.5 ~ 1 o'clock
-1
2. production method according to claim 1 is characterized in that: described sorbent material is gac, molecular sieve or zeolite.
3. production method according to claim 2 is characterized in that: described sorbent material is a gac FX-40 sorbent material.
4. production method according to claim 1 is characterized in that: described production method also comprises step (3): after triple-effect evaporator steams furfural, must extract the Extract of step (1) gained out oil; The furfural that is steamed is sent in the extraction tower again and is used as solvent.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104293385A (en) * | 2013-07-18 | 2015-01-21 | 中国石油化工股份有限公司 | Process for extracting aromatic hydrocarbon oil |
| CN106459774A (en) * | 2014-06-10 | 2017-02-22 | 沙特阿拉伯石油公司 | Integrated systems and methods for separation and extraction of polynuclear aromatic hydrocarbons, heterocyclic compounds, and organometallic compounds from hydrocarbon feedstocks |
| CN108774544A (en) * | 2018-07-08 | 2018-11-09 | 云南聚中能源科技有限公司 | Oil product decolorising agent |
| CN109181760A (en) * | 2018-10-30 | 2019-01-11 | 安徽海德化工科技有限公司 | A kind of production method of aromatic naphtha |
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| CN106459774A (en) * | 2014-06-10 | 2017-02-22 | 沙特阿拉伯石油公司 | Integrated systems and methods for separation and extraction of polynuclear aromatic hydrocarbons, heterocyclic compounds, and organometallic compounds from hydrocarbon feedstocks |
| CN108774544A (en) * | 2018-07-08 | 2018-11-09 | 云南聚中能源科技有限公司 | Oil product decolorising agent |
| CN108774544B (en) * | 2018-07-08 | 2021-01-22 | 云南聚中能源科技有限公司 | Oil product decolorizing agent |
| CN109181760A (en) * | 2018-10-30 | 2019-01-11 | 安徽海德化工科技有限公司 | A kind of production method of aromatic naphtha |
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| CN102146297B (en) | 2014-08-13 |
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Address after: 215225 Jiangsu city of Suzhou province Wujiang City Pingwang town Mei Yansan in Bridge Patentee after: Suzhou Jiutai Group Co. Ltd. Address before: 215225 Jiangsu city of Suzhou province Wujiang City Pingwang town Mei Yansan in Bridge Patentee before: Suzhou Jiutai Group |