CN102146297B - Method for producing environmental-friendly aromatic oil - Google Patents
Method for producing environmental-friendly aromatic oil Download PDFInfo
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- CN102146297B CN102146297B CN201110052122.1A CN201110052122A CN102146297B CN 102146297 B CN102146297 B CN 102146297B CN 201110052122 A CN201110052122 A CN 201110052122A CN 102146297 B CN102146297 B CN 102146297B
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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
for protection of the environment and human health, the 2005/69/EC instruction in Strasbourg, FRA signature will come into force 1 day January in 2010 on November 16th, 2005 for parliament of European Union and EU Council, and instruction has been made concrete regulation to the aromatic hydrocarbon oil directly putting goods on the market or for the manufacture of the aromatic hydrocarbon oil of tire: the quality percentage composition of the polycyclic aromatic hydrocarbon compounds (PCA) of 1, measuring according to IP346 method is not more than 3%; 2, in tire, 8 kinds of specific polycyclic aromatic hydrocarbon contents such as benzo [a] anthracene are not more than 10mg/kg, 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 tire.Using environment-friendly aromatic oil (TDAE) to reduce and use the harm of carcinogenic substance to human body in rubber process, is the direction of aromatic hydrocarbon oil development.At present, supply the solar oil of the German Han Sheng-Luo Shengtai group company of having of TDAE, the U.S., the young oil of Japan on market, China only has the report of lab scale and patent, so far without suitability for industrialized production.
in addition, in producing the technological process of environment-friendly aromatic oil, often need to use extraction tower, existing extraction tower all adopts traditional packed extraction tower substantially, and because the viscosity of material is larger, this packed extraction tower is difficult to guarantee fully contacting of solvent and material, makes the extraction efficiency of this tower lower, can not reach desirable 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, and its production efficiency is high, and the aromaticity content of gained environment-friendly aromatic oil is high, good and nontoxicity and carinogenicity with rubber compatibility.
for solving above technical problem, the present invention takes following technical scheme:
a production method for environment-friendly aromatic oil, comprises the steps:
(1) take the JT-3 aromatic hydrocarbon oil of Suzhou Jiutai Group's production and selling is raw material, and furfural is solvent, in extraction tower, JT-3 aromatic hydrocarbon oil is carried out to extracting, and extraction tower tower top temperature is 62 ℃ ~ 80 ℃, and effluent liquid is raffinate; Extraction tower column bottom temperature is 46 ~ 70 ℃, and effluent liquid is Extract; Extraction tower rotating speed is 30 ~ 80 revs/min, and agent-oil ratio is 0.6 ~ 2:1; Described extraction tower is multi-stage solvent extraction tower;
(2) step (1) gained raffinate obtains and raffinates oil under negative pressure after heat-conducting oil heating is removed furfural, and gained is raffinated oil and sent into the adsorption tower absorption that contains sorbent material, obtains environment-friendly aromatic oil; Adsorption tower bed temperature is 100 ℃ ~ 160 ℃, and 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 dispersion become more even and rational drop, external phase is fully contacted with disperse phase, thereby reach the object that simultaneously completes a plurality of extraction processes, has very high extraction efficiency.At present, the manufacture that the present invention is applied to environment-friendly aromatic oil by this kind of multi-stage solvent extraction tower still belongs to 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 steaming is sent in 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 first first vaporizer being produced is used as heating source again, introduce another vaporizer, as long as control pressure and solution boiling point in vaporizer, it is suitably reduced, and the secondary steam that can utilize first vaporizer to produce heats.Now, condensation place of first vaporizer is exactly heating place of second vaporizer, and this is multiple-effect evaporation principle.Each vaporizer is called an effect, and the vaporizer that steam passes into is at first the first effect, and the vaporizer that secondary steam passes into is the second effect, by that analogy.The vaporization efficiency of this multiple-effect evaporator exceeds much than common vaporizer, and this also makes the rate of recovery of solvent in step (3) greatly increase.
due to the enforcement of above technical scheme, the present invention compared with prior art tool has the following advantages:
the production method of environment-friendly aromatic oil of the present invention, adopts multi-stage solvent extraction tower to replace existing packing tower as extraction tower, has significantly improved production efficiency; After extracting completes, adopt the method for sorbent material fractionation by adsorption to remove the multiple polycyclic aromatic hydrocarbons in raffinating oil, make the purity of gained environment-friendly aromatic oil production high, better quality.
Accompanying drawing explanation
fig. 1 is the production technique schematic diagram of environment-friendly aromatic oil of the present invention.
Embodiment
below in conjunction with accompanying drawing and specific embodiment, the present invention will be further described in detail, but be not limited to these embodiment.
embodiment 1
1) take JT-3 aromatic hydrocarbon oil as raw material, take furfural as solvent, carry out extracting in extraction tower, top obtains raffinate; Bottom obtains Extract, and raffinate after heat-conducting oil heating is removed furfural, is and raffinates oil under negative pressure; Extract, after furfural is reclaimed in triple effect evaporation, is and extracts oil out.Described extracting condition is: tower top temperature is 80 ℃, and column bottom temperature is 70 ℃, and extraction tower rotating speed is 30 revs/min, and agent-oil ratio is 0.6:1.
2) described in, raffinate oil through the refining environment-friendly aromatic oil that obtains of sorbent material (FX-40).Described purification condition is: adsorption tower bed temperature is 100 ℃, and charging air speed is 0.5h-1.
embodiment 2
1) take JT-3 aromatic hydrocarbon oil as raw material, take furfural as solvent, carry out extracting in extraction tower, top obtains raffinate; Bottom obtains Extract, and raffinate after heat-conducting oil heating is removed furfural, is and raffinates oil under negative pressure; Extract, after furfural is reclaimed in triple effect evaporation, is and extracts oil out.Described extracting condition is: tower top temperature is 70 ℃, and column bottom temperature is 58 ℃, and extraction tower rotating speed is 45 revs/min, and agent-oil ratio is 1.3:1.
2) described in, raffinate oil through the refining environment-friendly aromatic oil that obtains of sorbent material (FX-40).Described purification condition is: adsorption tower bed temperature is 130 ℃, and charging air speed is 0.75h-1.
embodiment 3
1) take JT-3 aromatic hydrocarbon oil as raw material, take furfural as solvent, carry out extracting in extraction tower, top obtains raffinate; Bottom obtains Extract, and raffinate after heat-conducting oil heating is removed furfural, is and raffinates oil under negative pressure; Extract, after furfural is reclaimed in triple effect evaporation, is and extracts oil out.Described extracting condition is: tower top temperature is 62 ℃, and column bottom temperature is 46 ℃, and extraction tower rotating speed is 80 revs/min, and agent-oil ratio is 2:1.
2) described in, raffinate oil through the refining environment-friendly aromatic oil that obtains of sorbent material (FX-40).Described purification condition is: adsorption tower bed temperature is 160 ℃, and 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 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, can find out, the prepared environment-friendly aromatic oil quality of production method of the present invention is completely qualified, and the present invention is the production method that can realize the environment-friendly aromatic oil of suitability for industrialized production being worthy to be popularized very much.
above the present invention is described in detail; its object is to allow the personage who is familiar with this art can understand content of the present invention and be implemented; can not limit the scope of the invention with this; the equivalence that all spirit according to the present invention are done changes or modifies, and all should be encompassed in protection scope of the present invention.
Claims (1)
1. a production method for environment-friendly aromatic oil, is characterized in that: comprise the steps:
(1) take the JT-3 aromatic hydrocarbon oil of Suzhou Jiutai Group's production and selling is raw material, and furfural is solvent, in extraction tower, JT-3 aromatic hydrocarbon oil is carried out to extracting, and extraction tower tower top temperature is 62 ℃ ~ 80 ℃, and effluent liquid is raffinate; Extraction tower column bottom temperature is 46 ~ 70 ℃, and effluent liquid is Extract; Extraction tower rotating speed is 30 ~ 80 revs/min, and agent-oil ratio is 0.6 ~ 2:1; Described extraction tower is multi-stage solvent extraction tower; (2) step (1) gained raffinate obtains and raffinates oil under negative pressure after heat-conducting oil heating is removed furfural, and gained is raffinated oil and sent into the adsorption tower absorption that contains sorbent material, obtains environment-friendly aromatic oil; Adsorption tower bed temperature is 100 ℃ ~ 160 ℃, and charging air speed is 0.5 ~ 1 h
-1;
Described sorbent material is gac, molecular sieve or zeolite;
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 steaming is sent in extraction tower again and is used as solvent.
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| CN104293385B (en) * | 2013-07-18 | 2016-05-04 | 中国石油化工股份有限公司 | A kind of extraction process of aromatic naphtha |
| US9688923B2 (en) * | 2014-06-10 | 2017-06-27 | Saudi Arabian Oil Company | Integrated methods for separation and extraction of polynuclear aromatic hydrocarbons, heterocyclic compounds, and organometallic compounds from hydrocarbon feedstocks |
| CN108774544B (en) * | 2018-07-08 | 2021-01-22 | 云南聚中能源科技有限公司 | Oil product decolorizing agent |
| CN109181760B (en) * | 2018-10-30 | 2021-04-13 | 蚌埠知博自动化技术开发有限公司 | Production method of aromatic oil |
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| CN101085936A (en) * | 2006-06-07 | 2007-12-12 | 神华煤制油研究中心有限公司 | Method for preparing thermal conductive oil by using coal liquefied oil |
| CN101386687A (en) * | 2008-10-24 | 2009-03-18 | 中国海洋石油总公司 | Aromatic rubber oil and producing method thereof |
| CN101684185A (en) * | 2008-09-27 | 2010-03-31 | 中国石油天然气股份有限公司 | Method for producing high-arene environment-friendly rubber oil |
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| JPH0670226B2 (en) * | 1987-12-11 | 1994-09-07 | 株式会社ジャパンエナジー | Method for producing highly aromatic high boiling point solvent |
| JPH1153790A (en) * | 1997-08-04 | 1999-02-26 | Sony Corp | Signal recording/reproducing device |
| CN1107101C (en) * | 2000-10-26 | 2003-04-30 | 中国石油化工股份有限公司 | Process for treating heavy arylhydrocarbon oil |
| CN100350020C (en) * | 2005-10-26 | 2007-11-21 | 邓先樑 | Catalyzing and cracking process of inferior oil |
| CN201551863U (en) * | 2009-12-03 | 2010-08-18 | 立邦涂料（中国）有限公司 | Solvent recovery system and reactor thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101085936A (en) * | 2006-06-07 | 2007-12-12 | 神华煤制油研究中心有限公司 | Method for preparing thermal conductive oil by using coal liquefied oil |
| CN101684185A (en) * | 2008-09-27 | 2010-03-31 | 中国石油天然气股份有限公司 | Method for producing high-arene environment-friendly rubber oil |
| CN101386687A (en) * | 2008-10-24 | 2009-03-18 | 中国海洋石油总公司 | Aromatic rubber oil and producing method thereof |
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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 |