CN100379841C - Highly sulfur removal method of diesel oil - Google Patents
Highly sulfur removal method of diesel oil Download PDFInfo
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- CN100379841C CN100379841C CNB2006100287365A CN200610028736A CN100379841C CN 100379841 C CN100379841 C CN 100379841C CN B2006100287365 A CNB2006100287365 A CN B2006100287365A CN 200610028736 A CN200610028736 A CN 200610028736A CN 100379841 C CN100379841 C CN 100379841C
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Abstract
The invention relates to a method for deeply removing sulfides from diesel oil on moderate conditions, using Ti-MWW molecular sieve as catalyst and hydroperoxide as oxidant, belonging to oil refining technical field. And it uses Ti-MWW molecular sieve as catalyst and hydroperoxide as oxidant, applies catalytic oxidation method to oxidize sulfides in diesel oil, and implements desulphurization by extraction. And it has moderate reaction conditions, simple equipment, high diesel oil recovery and on the moderate conditions, it can implement deep desulphurization by up to 80%-100%.
Description
Technical field
The present invention relates to a kind of process for deep desulphurization of diesel oil, specifically, relating to a kind of is catalyzer with the HTS, and hydrogen peroxide is the method for sulfide in the deep removal diesel oil under the mild conditions of oxygenant, and this invention belongs to the Petroleum Processing Technology field.
Background technology
The burning of the sulfocompound in the liquid fuel causes serious harm for world environments and society, particularly along with the quickening of world industry process, the consumption of diesel oil is increasing, the problem that is caused is more and more serious thus, therefore in the standard of the clean fuel formulated of countries in the world, improved greatly the wherein restriction of sulphur content.EPA regulation reaches the standard of 15 μ g/g to the sulphur content in June, 2006 diesel oil.In China, along with economic society health develops apace, the consumption of imported crude oil is increasing, and the sulphur content in the import oil product is generally higher, and therefore, it is particularly important to develop a kind of technology that fast and effeciently removes sulfide in the diesel oil; Yet traditional hydrogenating desulfurization has only temperature, the pressure that improves reaction, strengthens reactor and develops more highly active catalyzer, can process satisfactory fuel.The method of organic sulfide is a kind of reaction conditions gentleness in the catalyzed oxidation deep removal liquid fuel, and the new technology that cost is low also can be used as the follow-up deep desulfuration technology of HDS technology, has good application prospects.
US20020035306 has reported acetic acid aqueous solution catalysis hydrogen peroxide oxidation-abstraction desulfurization system.They think that acetate and hydrogen peroxide effect generate Peracetic Acid, can will remove by highly stable sulfide very effectively in HDS.Oxidizing reaction is being lower than 100 ℃, and under the non-pressurized reaction conditions, dibenzothiophene sulfide and homologue thereof are adopted to have polar solvent extract by the selectivity oxidation then.This method can be reduced to 70 μ g/g by 4720 μ g/g with sulphur content in the diesel oil.
At document [Energy Fules.14 (2000), 1232, S.Otsuki, T. Nonakka, N.Takashima, W.Qian, A.Ishihara, T.Imai, and T.Kabe] in, the author has reported employing formic acid catalyzer, and the research of the various sulfide of catalysis hydrogen peroxide oxidation can be with thioether, mercaptan, thionaphthene, dibenzothiophene and 4, oxidations such as 6-dimethyldibenzothiophene are removed.But because the cloud density on the sulphur atom is low in thiophene and the alkyl-substituted derivatives, can not be by hydrogen peroxide oxidation under mild conditions.
CN01136396.7 has reported the ultrasonic-catalytic-oxidation desulfurization method of producing ultra-low-sulphur diesel.They utilize TOAB (four octyl group amine bromides) is consisting of phase-transferring agent, and PTA (phospho-wolframic acid) is a catalyzer, H
2O
2Be oxygenant, under ultrasound condition, reacted 7 minutes that again by thermal treatment, steps such as solvent extraction can be reduced to 19ppm from 1867ppm with the sulphur content in the diesel oil.
CN1554730A has reported a kind of method of catalyzed oxidation deep removal sulfide in petrol.It is catalyzer that this method adopts solid molecular sieves, hydrogen peroxide is an oxygenant, 40 ℃-80 ℃ of temperature, under the normal pressure, can be with the main sulfide oxidation in the gasoline, oxidation products is that solvent extraction removes with methyl alcohol, acetonitrile, the trimethyl carbinol, water or its mixture, through separating, the sulphur compound of the 80-90% in the gasoline can be removed, the sulphur content in the FCC gasoline 18 μ g/g can be reduced to by 136 μ g/g.
At document [Journal of Chemical Engineering of Japan, 35 (2002), 1305.YASUHIRO SHIRAISHI, TAKAYUKI HIRAI AND ISAO KOMASAWA] in reported that a kind of utilization utilizes the method for titanium molecular sieve catalysis oxidation removal light-end products sulfide, under 100 ℃ of conditions, normal pressure, acetonitrile: oil product=2: 1 (60mL: 30mL), H
2O
2: S=100: 1 catalyzer is 5.0g, reacts 24 hours, the sulphur content in the light-end products can be reduced to 230 μ g/g by 1800 μ g/g.
Above document has all adopted catalytic oxidation desulfurization method.Utilize acetate or heteropolyacid to be catalyzer, exist catalyzer and be difficult to and the oil product Separation and Recovery, influence the problem of oil quality.Utilize HTS only effective to gasoline for catalyzer.At document [Journal of chemicalEngineering of Japan. 35 (2002) 1305.YASUHIRO SHIRAISHI, TAKAYUKI HIRAI AND ISAO KOMASAWA] in, desulfurization to light-end products has certain effect, but problems such as it is too big to exist hydrogen peroxide and catalyst levels, and the reaction times is oversize.Therefore, do not see so far under mild conditions and low cost, utilize the HTS method of sulfide in the catalytic oxidative desulfurization diesel oil fast and effeciently.
Summary of the invention
The object of the present invention is to provide a kind of is catalyzer with the HTS, carries out under mild conditions, with low cost, fast and effectively the process for deep desulphurization of diesel oil.
For realizing purpose of the present invention, the technical solution used in the present invention is: with the Ti-MWW molecular sieve is catalyzer, is oxygenant with the hydrogen peroxide, and the utilization catalytic oxidation carries out oxidation to sulfide in diesel oil, realize desulfurization through extraction, comprise the steps: particularly
The first step: successively diesel oil, Ti-MWW molecular sieve and hydrogen peroxide are added in the reactor, oxygenant is the aqueous solution of hydrogen peroxide, its concentration is 1%～30%, the weight ratio of diesel oil and Ti-MWW molecular sieve is 10: 1～1000: 1, and the mol ratio of hydrogen peroxide and sulfide in diesel oil is 2: 1～20: 1;
Second step: reaction system is warming up to 20 ℃～100 ℃, stirs, the raw material sulfide in diesel oil generates corresponding oxide compound through catalyzed oxidation;
The 3rd step:,, realized diesel deep desulfurization by the oxidation products of solvent extraction sulfide by sedimentation or centrifugal oil product and the Ti-MWW molecular sieving of making.
The said catalyzer Ti-MWW of the present invention molecular sieve refers in July, 2000 Wu Peng etc. at chemical wall bulletin (Chemisty Letters, 2000, the one Ti-MWW molecular sieve of at first reporting 7:774-775) of the titanium-containing molecular sieve material with MWW structure, and find that it has excellent catalytic performance to the epoxidation of carbon-carbon double key.But the Ti-MWW molecular sieve is used for diesel fuel desulfurization, yet there are no report.
The process for deep desulphurization of diesel oil provided by the invention can also add solvent in the above-mentioned the first step, solvent and diesel oil volume ratio are 0.1: 1～10: 1, and extraction process and oxidizing reaction are carried out simultaneously.
Extraction solvent is selected from a kind of in methyl alcohol, water, acetonitrile, methyl-sulphoxide, the ionic liquid or more than one mixture.
Effect of the present invention: the reaction conditions gentleness, equipment is simple, and post catalyst reaction easily reclaims, the rate of recovery height of diesel oil, and under the condition of gentleness, realize deep desulfuration, the decreasing ratio of sulphur reaches 80%-100%.
The specific examples mode
Embodiment 1.
A certain amount of thionaphthene is dissolved in a certain amount of octane-iso, is made into simulation diesel oil, its sulphur content is that 1000 μ g/mL. are with above-mentioned simulation diesel oil 10mL, acetonitrile 10ml, Ti-MWW0.1g and oxygenant H
2O
2(30%wt) 68 μ L join in the flask successively, H
2O
2/ sulfide mol ratio is 2: 1, and oxidizing reaction is carried out in the water bath with thermostatic control that is heated to 70 ℃ is poor, induction stirring reaction 3 hours.The reaction back is static, and simulation diesel oil separates with acetonitrile, analyzes oil phase and shows, the decreasing ratio of thionaphthene is 81% in the simulation diesel oil.
Embodiment 2.
A certain amount of thionaphthene is dissolved in a certain amount of octane-iso, is made into simulation diesel oil, its sulphur content is that 1000 μ g/mL. are with above-mentioned simulation oil product 10mL, solvent acetonitrile 10ml, catalyzer 0.1g and oxygenant H
2O
2(30%wt) 102 μ L join .H in the flask successively
2O
2/ sulfide mol ratio is 3: 1.Oxidizing reaction is carried out in the water bath with thermostatic control that is heated to 70 ℃ is poor, induction stirring reaction 3 hours.The reaction back is static, and simulation diesel oil separates with acetonitrile, analyzes oil phase and shows, the decreasing ratio of thionaphthene is 100% in the simulation diesel oil.
Embodiment 3.
A certain amount of thionaphthene is dissolved in a certain amount of octane-iso, is made into simulation diesel oil, its sulphur content is that 1000 μ g/mL. are with above-mentioned simulation oil product 10mL, solvent acetonitrile 10ml, catalyzer 0.1g and oxygenant H
2O
2(30%wt) 136 μ L join .H in the three-necked flask successively
2O
2/ sulfide mol ratio is 4: 1. oxidizing reaction is carried out in the water bath with thermostatic control that is heated to 70 ℃ is poor, induction stirring reaction 3 hours.The reaction back is static, and simulation diesel oil separates with acetonitrile, analyzes oil phase and shows, the decreasing ratio of thionaphthene is 100% in the simulation diesel oil.
Embodiment 4.
A certain amount of thionaphthene is dissolved in a certain amount of octane-iso, is made into simulation diesel oil, its sulphur content is that 1000 μ g/mL. are with above-mentioned simulation oil product 10mL, solvent methanol 10ml, catalyzer 0.1g and oxygenant H
2O
2(30%wt) 136 μ L join .H in the three-necked flask successively
2O
2/ sulfide mol ratio is 4: 1. oxidizing reaction is carried out in the water bath with thermostatic control that is heated to 70 ℃ is poor, induction stirring reaction 3 hours.The reaction back is static, and simulation diesel oil separates with acetonitrile, analyzes oil phase and shows, the decreasing ratio of thionaphthene is 92% in the simulation diesel oil.
Embodiment 5.
A certain amount of thionaphthene is dissolved in a certain amount of octane-iso, is made into simulation diesel oil, its sulphur content is that 1000 μ g/mL. are with above-mentioned simulation oil product 10mL, aqueous solvent 10ml, catalyzer 0.1g and oxygenant H
2O
2(30%wt) 136 μ L join .H in the three-necked flask successively
2O
2/ sulfide mol ratio is 4: 1. oxidizing reaction is carried out in the water bath with thermostatic control that is heated to 70 ℃ is poor, induction stirring reaction 3 hours.The reaction back is static, and simulation diesel oil separates with acetonitrile, analyzes oil phase and shows, the decreasing ratio of thionaphthene is 68% in the simulation diesel oil.
Embodiment 6.
A certain amount of thionaphthene is dissolved in a certain amount of octane-iso, is made into simulation diesel oil, its sulphur content is that 1000 μ g/mL. are with above-mentioned simulation oil product 10mL, solvent acetonitrile 10ml, catalyzer 0.1g and oxygenant H
2O
2(30%wt) 136 μ L join .H in the three-necked flask successively
2O
2/ sulfide mol ratio is 4: 1. oxidizing reaction is carried out in the water bath with thermostatic control that is heated to 40 ℃ is poor, induction stirring reaction 3 hours.The reaction back is static, and simulation diesel oil separates with acetonitrile, analyzes oil phase and shows, the decreasing ratio of thionaphthene is 79% in the simulation diesel oil.
Embodiment 7.
A certain amount of thionaphthene is dissolved in a certain amount of octane-iso, is made into simulation diesel oil, its sulphur content is that 1000 μ g/mL. are with above-mentioned simulation oil product 10mL, solvent acetonitrile 10ml, catalyzer 0.1g and oxygenant H
2O
2(30%wt) 136 μ L join .H in the three-necked flask successively
2O
2/ sulfide mol ratio is 4: 1. oxidizing reaction is carried out in the water bath with thermostatic control that is heated to 50 ℃ is poor, induction stirring reaction 3 hours.The reaction back is static, and simulation diesel oil separates with acetonitrile, analyzes oil phase and shows, the decreasing ratio of thionaphthene is 94% in the simulation diesel oil.
Embodiment 8.
A certain amount of thionaphthene is dissolved in a certain amount of octane-iso, is made into simulation diesel oil, its sulphur content is that 1000 μ g/mL. are with above-mentioned simulation oil product 10mL, solvent acetonitrile 10ml, catalyzer 0.1g and oxygenant H
2O
2(30%wt) 136 μ L join .H in the three-necked flask successively
2O
2/ sulfide mol ratio is 4: 1. oxidizing reaction is carried out in the water bath with thermostatic control that is heated to 60 ℃ is poor, induction stirring reaction 3 hours.The reaction back is static, and simulation diesel oil separates with acetonitrile, analyzes oil phase and shows, the decreasing ratio of thionaphthene is 100% in the simulation diesel oil.
Embodiment 9.
A certain amount of dibenzothiophene is dissolved in a certain amount of octane-iso, is made into simulation diesel oil, its sulphur content is that 1000 μ g/mL. are with above-mentioned simulation oil product 10mL, solvent acetonitrile 10ml, catalyzer 0.1g and oxygenant H
2O
2(30%wt) 68 μ L join .H in the three-necked flask successively
2O
2/ sulfide mol ratio is 2: 1. oxidizing reaction is carried out in the water bath with thermostatic control that is heated to 70 ℃ is poor, induction stirring reaction 3 hours.The reaction back is static, and simulation diesel oil separates with acetonitrile, analyzes oil phase and shows, the decreasing ratio of thionaphthene is 84% in the simulation diesel oil.
Embodiment 10.
A certain amount of dibenzothiophene is dissolved in a certain amount of octane-iso, is made into simulation diesel oil, its sulphur content is that 1000 μ g/mL. are with above-mentioned simulation oil product 10mL, solvent acetonitrile 10ml, catalyzer 0.1g and oxygenant H
2O
2(30%wt) 102 μ L join .H in the three-necked flask successively
2O
2/ sulfide mol ratio is 3: 1. oxidizing reaction is carried out in the water bath with thermostatic control that is heated to 70 ℃ is poor, induction stirring reaction 3 hours.The reaction back is static, and simulation diesel oil separates with acetonitrile, analyzes oil phase and shows, the decreasing ratio of thionaphthene is 98% in the simulation diesel oil.
Embodiment 11.
A certain amount of dibenzothiophene is dissolved in a certain amount of octane-iso, is made into simulation diesel oil, its sulphur content is that 1000 μ g/mL. are with above-mentioned simulation oil product 10mL, solvent acetonitrile 10ml, catalyzer 0.1g and oxygenant H
2O
2(30%wt) 136 μ L join .H in the three-necked flask successively
2O
2/ sulfide mol ratio is 4: 1. oxidizing reaction is carried out in the water bath with thermostatic control that is heated to 70 ℃ is poor, induction stirring reaction 3 hours.The reaction back is static, and simulation diesel oil separates with acetonitrile, analyzes oil phase and shows, the decreasing ratio of thionaphthene is 100% in the simulation diesel oil.
Embodiment 12.
A certain amount of dibenzothiophene is dissolved in a certain amount of octane-iso, is made into simulation diesel oil, its sulphur content is that 1000 μ g/mL. are with above-mentioned simulation oil product 10mL, solvent acetonitrile 10ml, catalyzer 0.1g and oxygenant H
2O
2(30%wt) 136 μ L join .H in the three-necked flask successively
2O
2/ sulfide mol ratio is 4: 1. oxidizing reaction is carried out in the water bath with thermostatic control that is heated to 40 ℃ is poor, induction stirring reaction 3 hours.The reaction back is static, and simulation diesel oil separates with acetonitrile, analyzes oil phase and shows, the decreasing ratio of thionaphthene is 81% in the simulation diesel oil.
Embodiment 13.
A certain amount of dibenzothiophene is dissolved in a certain amount of octane-iso, is made into simulation diesel oil, its sulphur content is that 1000 μ g/mL. are with above-mentioned simulation oil product 10mL, solvent acetonitrile 10ml, catalyzer 0.1g and oxygenant H
2O
2(30%wt) 136 μ L join .H in the three-necked flask successively
2O
2/ sulfide mol ratio is 4: 1. oxidizing reaction is carried out in the water bath with thermostatic control that is heated to 50 ℃ is poor, induction stirring reaction 3 hours.The reaction back is static, and simulation diesel oil separates with acetonitrile, analyzes oil phase and shows, the decreasing ratio of thionaphthene is 94% in the simulation diesel oil.
Embodiment 14.
A certain amount of dibenzothiophene is dissolved in a certain amount of octane-iso, is made into simulation diesel oil, its sulphur content is that 1000 μ g/mL. are with above-mentioned simulation oil product 10mL, solvent acetonitrile 10ml, catalyzer 0.1g and oxygenant H
2O
2(30%wt) 136 μ L join .H in the three-necked flask successively
2O
2/ sulfide mol ratio is 4: 1. oxidizing reaction is carried out in the water bath with thermostatic control that is heated to 60 ℃ is poor, induction stirring reaction 3 hours.The reaction back is static, and simulation diesel oil separates with acetonitrile, analyzes oil phase and shows, the decreasing ratio of thionaphthene is 100% in the simulation diesel oil.
Embodiment 15
A certain amount of thionaphthene is dissolved in a certain amount of octane-iso, be made into simulation diesel oil, its sulphur content is that 1000 μ g/mL. are with above-mentioned simulation diesel oil 10mL, acetonitrile 10ml, Ti-MWW0.03g and oxygenant H2O2 (30%wt) 136 μ L join in the flask successively, H2O2/ sulfide mol ratio is 4: 1, and oxidizing reaction is carried out in the water bath with thermostatic control that is heated to 70 ℃ is poor, induction stirring reaction 3 hours.The reaction back is static, and simulation diesel oil separates with acetonitrile, analyzes oil phase and shows, the decreasing ratio of thionaphthene is 70%. in the simulation diesel oil
Embodiment 16
A certain amount of thionaphthene is dissolved in a certain amount of octane-iso, be made into simulation diesel oil, its sulphur content is that 1000 μ g/mL. are with above-mentioned simulation diesel oil 10mL, acetonitrile 10ml, Ti-MWW0.06g and oxygenant H2O2 (30%wt) 136 μ L join in the flask successively, H2O2/ sulfide mol ratio is 4: 1, and oxidizing reaction is carried out in the water bath with thermostatic control that is heated to 70 ℃ is poor, induction stirring reaction 3 hours.The reaction back is static, and simulation diesel oil separates with acetonitrile, analyzes oil phase and shows, the decreasing ratio of thionaphthene is 98%. in the simulation diesel oil
Embodiment 17
A certain amount of thionaphthene is dissolved in a certain amount of octane-iso, be made into simulation diesel oil, its sulphur content is that 1000 μ g/mL. are with above-mentioned simulation diesel oil 10mL, acetonitrile 10ml, Ti-MWW0.1g and oxygenant H2O2 (5%wt) 816 μ L join in the flask successively, H2O2/ sulfide mol ratio is 4: 1, and oxidizing reaction is carried out in the water bath with thermostatic control that is heated to 70 ℃ is poor, induction stirring reaction 3 hours.The reaction back is static, and simulation diesel oil separates with acetonitrile, analyzes oil phase and shows, the decreasing ratio of thionaphthene is 93%. in the simulation diesel oil
Embodiment 18
A certain amount of thionaphthene is dissolved in a certain amount of octane-iso, be made into simulation diesel oil, its sulphur content is that 1000 μ g/mL. are with above-mentioned simulation diesel oil 10mL, acetonitrile 10ml, Ti-MWW0.1g and oxygenant H2O2 (10%wt) 408 μ L join in the flask successively, H2O2/ sulfide mol ratio is 4: 1, and oxidizing reaction is carried out in the water bath with thermostatic control that is heated to 70 ℃ is poor, induction stirring reaction 3 hours.The reaction back is static, and simulation diesel oil separates with acetonitrile, analyzes oil phase and shows, the decreasing ratio of thionaphthene is 99%. in the simulation diesel oil
Embodiment 19.
With sulphur content is the finished diesel fuel 10ml of 1112 μ g/g, solvent acetonitrile 20ml, catalyzer 0.2g, disposable successively joining in the reactor. again oxidant hydrogen peroxide (30%wt) 136 μ L are joined in the three-necked flask, being reflected at the water bath with thermostatic control that is heated to 70 ℃ carries out in poor, and whenever add hydrogen peroxide (30%wt) 136 μ L after an hour, until H
2O
2/ sulfide mol ratio is 20: 1. induction stirring is 6 hours. and the reaction back is static, and diesel oil separates with acetonitrile, analyzes oil phase and shows that the total sulfur removal rate in the diesel oil is 77%.
Embodiment 20
With sulphur content is the finished diesel fuel 10ml of 1112 μ g/g, solvent acetonitrile 20ml, catalyzer 0.3g, disposable successively joining in the reactor. again oxidant hydrogen peroxide (30%wt) 136 μ L are joined in the three-necked flask, being reflected at the water bath with thermostatic control that is heated to 80 ℃ carries out in poor, and whenever add hydrogen peroxide (30%wt) 136 μ L after an hour, until H
2O
2/ sulfide mol ratio is 12: 1. induction stirring is 6 hours. and the reaction back is static, and diesel oil separates with acetonitrile, analyzes oil phase and shows that the total sulfur removal rate in the diesel oil is 78%.
Embodiment 21
With sulphur content is the finished diesel fuel 10ml of 1112 μ g/g, solvent acetonitrile 20ml, catalyzer 0.3g, disposable successively joining in the reactor.Again oxidant hydrogen peroxide (30%wt) 136 μ L are joined in the three-necked flask, be reflected at the water bath with thermostatic control that is heated to 80 ℃ and carry out in poor, and whenever add hydrogen peroxide (30%wt) 136 μ L after an hour, until H
2O
2/ sulfide mol ratio is 20: 1, induction stirring 6 hours. the reaction back is static, and diesel oil separates with acetonitrile, analyzes oil phase and shows that the total sulfur removal rate in the diesel oil is 81%.
Embodiment 22
With sulphur content is the finished diesel fuel 10ml of 1112 μ g/g, solvent acetonitrile 20ml, catalyzer 0.3g, disposable successively joining in the reactor. again oxidant hydrogen peroxide (30%wt) 136 μ L are joined in the three-necked flask, being reflected at the constant temperature oil bath that is heated to 100 ℃ carries out in poor, and whenever add hydrogen peroxide (30%wt) 136 μ L after an hour, until H
2O
2/ sulfide mol ratio is 20: 1. induction stirring is 6 hours. and the reaction back is static, and diesel oil separates with acetonitrile, analyzes oil phase and shows that the total sulfur removal rate in the diesel oil is 86%.
By the GC-PFPD analysis revealed, behind the finished diesel fuel oxidation sweetening, the content of sulfide reduces greatly, and main oxidation products is extracted in the acetonitrile layer for its corresponding sulfone.
Claims (3)
1. the process for deep desulphurization of a diesel oil is an oxygenant with the hydrogen peroxide, utilizes catalytic oxidation to realize the deep desulfuration of diesel oil, it is characterized in that catalyzer is the Ti-MWW molecular sieve, and may further comprise the steps:
The first step: successively diesel oil, Ti-MWW molecular sieve and hydrogen peroxide are added in the reactor, the concentration of hydrogen peroxide is 1%～30%, the weight ratio of diesel oil and Ti-MWW molecular sieve is 10: 1～1000: 1, and the mol ratio of hydrogen peroxide and sulfide in diesel oil is 2: 1～20: 1;
Second step: reaction system is warming up to 20 ℃～100 ℃, stirs, the raw material sulfide in diesel oil generates corresponding oxide compound through catalyzed oxidation;
The 3rd step:,, realized diesel deep desulfurization by the oxidation products of solvent extraction sulfide by sedimentation or centrifugal oil product and the Ti-MWW molecular sieving of making.
2. the process for deep desulphurization of diesel oil as claimed in claim 1 is characterized in that adding solvent in the first step, and the volume ratio of solvent and diesel oil is 0.1: 1～10: 1, and extraction process and oxidizing reaction are carried out simultaneously.
3. the process for deep desulphurization of diesel oil as claimed in claim 1, the solvent that adopts when it is characterized in that extracting are a kind of in methyl alcohol, water, acetonitrile, methyl-sulphoxide, the ionic liquid or more than one mixture.
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| CN101173179B (en) * | 2007-10-24 | 2010-09-29 | 中国科学院大连化学物理研究所 | Catalyst for diesel oil oxidation distillation ultra-deepness desulfurization and desulfurization method |
| CN103012366B (en) * | 2011-09-28 | 2015-09-23 | 中国石油化工股份有限公司 | A kind of method of thiophene-type sulfide oxidation |
| CN103664476A (en) * | 2012-09-05 | 2014-03-26 | 中国石油化工股份有限公司 | Desulphurization method for crude benzene |
| CN106566577B (en) * | 2015-10-12 | 2018-07-17 | 中国石油化工股份有限公司 | The method of sulfide in molecular sieve catalytic oxidation removal oil product |
| CN106587322A (en) * | 2015-10-14 | 2017-04-26 | 中国石油化工股份有限公司 | Treatment method of sulfide in basic residue sewage |
| CN108467746A (en) * | 2017-02-23 | 2018-08-31 | 中国石油化工股份有限公司 | The method of sulfide in molecular sieve catalytic oxidation removal oil product |
| CN114292668A (en) * | 2021-12-21 | 2022-04-08 | 镇江市高等专科学校 | Oxidation treatment method for fuel oil deep desulfurization process |
| CN115161072A (en) * | 2022-07-01 | 2022-10-11 | 中国石油化工股份有限公司 | Method for oxidizing, extracting and desulfurizing wax oil in microchannel reactor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412280A (en) * | 2001-10-15 | 2003-04-23 | 梅海 | Ultrasonic-catalytic-oxidation desulfurization method for producing ultralow sulfur diesel oil |
| CN1563284A (en) * | 2004-03-24 | 2005-01-12 | 华东理工大学 | Catalysis, oxidation sweetening method for distillate oil of petroleum |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412280A (en) * | 2001-10-15 | 2003-04-23 | 梅海 | Ultrasonic-catalytic-oxidation desulfurization method for producing ultralow sulfur diesel oil |
| CN1563284A (en) * | 2004-03-24 | 2005-01-12 | 华东理工大学 | Catalysis, oxidation sweetening method for distillate oil of petroleum |
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