CN103923690B - Method for extracting and catalyzing aromatic hydrocarbon in oil slurry - Google Patents
Method for extracting and catalyzing aromatic hydrocarbon in oil slurry Download PDFInfo
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- CN103923690B CN103923690B CN201310011028.0A CN201310011028A CN103923690B CN 103923690 B CN103923690 B CN 103923690B CN 201310011028 A CN201310011028 A CN 201310011028A CN 103923690 B CN103923690 B CN 103923690B
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- 239000002002 slurry Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 21
- 150000004945 aromatic hydrocarbons Chemical class 0.000 title claims abstract description 14
- 239000002904 solvent Substances 0.000 claims abstract description 29
- 238000000605 extraction Methods 0.000 claims abstract description 21
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 230000003197 catalytic effect Effects 0.000 claims abstract description 17
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 238000010992 reflux Methods 0.000 claims abstract description 4
- 239000000284 extract Substances 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 3
- 229930195734 saturated hydrocarbon Natural products 0.000 abstract description 3
- 239000000084 colloidal system Substances 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000009776 industrial production Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000000945 filler Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 31
- 238000007670 refining Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 239000004215 Carbon black (E152) Substances 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- 239000010426 asphalt Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000010763 heavy fuel oil Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000000638 solvent extraction Methods 0.000 description 3
- 239000004902 Softening Agent Substances 0.000 description 2
- 238000004523 catalytic cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003205 fragrance Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000010762 marine fuel oil Substances 0.000 description 2
- 239000011331 needle coke Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 241000772415 Neovison vison Species 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention relates to a method for extracting catalytic oil slurry aromatic hydrocarbon; firstly, in a pulse filler extraction tower, taking 90% of furfural and 10% of dimethyl sulfoxide as continuous phases by mass, taking catalytic slurry oil as a disperse phase, performing extraction separation at the temperature of 60 ℃ under the condition that the mass ratio of agent oil is 2: 1-3: 1, obtaining a pumped phase at the bottom of the tower, and obtaining a pumped residual phase at the top of the tower; secondly, respectively feeding the extracted phase and the raffinate phase into a reduced pressure rectifying tower, recovering the solvent under the conditions that the pressure is 26.66KPa, the mass ratio of reflux is 1:1 and the temperature at the bottom of the tower is 121.8 ℃, and returning the two recovered solvents to the inlet of the extraction tower for recycling; the extracted oil (with colloid and asphaltene removed) obtained by the method has aromatic hydrocarbon content of more than 90 percent and the raffinate oil has saturated hydrocarbon content of less than 10 percent, the property index of the oil product is superior to that of the extracted oil obtained by pure furfural, the process flow and equipment are simple, the operation is simple and convenient, the process condition is mild, the energy consumption is low, the application range is wide, and the method is easy for large-scale industrial production.
Description
Technical field
The present invention relates to a kind of method extracting catalytic slurry aromatic hydrocarbons.
Background technology
Catalytic slurry domestic at present generally heavy fuel oil (HFO) as cheapness dispatch from the factory. Owing to this series products belongs to nonstandard product, do not process further in addition, just sell as coarse raw materials. One is that sale economic benefit is low, and two is that major part is full of in the market as low-grade product, is had a negative impact by regular standard oil production marketing. In recent years, catalytic slurry character and Appropriate application technology thereof have been carried out big quantity research, relate generally to and catalytic slurry and oil refining process are combined with Appropriate application catalytic slurry, or utilize technical study according to what the feature on the composition of catalytic slurry carried out production chemical product, to obtain catalytic slurry high value-added product, it is determined that slurry oil deep processing scheme. Owing to containing the stable hydrocarbon of massfraction 30% ~ 50% in slurry oil, this part stable hydrocarbon is again the catalytically cracked material of high-quality; Aromatic hydrocarbons massfraction in slurry oil reaches more than 50% simultaneously, and aromatic hydrocarbons is the extremely valuable Chemicals of one, it is possible to the product that deep processing production added value is higher further, and end-use is extensive, wide market. Therefore catalytic slurry is burnt as the heavy fuel oil (HFO) of cheapness is unfortunately, carry out the applied research of this kind of nonstandard product, formulate comprehensive processing and utilization process program, it is possible to improve the economic worth of this kind of resource, good economic benefit will be brought to oil refining enterprise.
Stable hydrocarbon (naphthenic hydrocarbon below three rings accounts for more than the 70% of saturated hydrocarbon content) in catalytic cracking (FCC) externally extracting oil has good catalytic cracking performance and can be used as the marine fuel oil that FCC feedstock also can be used to production high added value; Aromatic hydrocarbon can be used as the raw material producing the chemical products with high added-value such as high aromatic rubber oil, needle coke, softening agent. At present, domestic and international FCC slurry process technology mainly contains the isolation technique such as hydrotreatment, solvent deasphalting, delayed coking, solvent treatment.From domestic and international applicable cases, solvent treatment technology is the simplest, less investment, high efficiency.
Solvent refining processes utilizes solvent that heavy arene, resin and asphalt are had stronger dissolving power, and the alkane in slurry oil is separated with heavy matter condensed-nuclei aromatics. The solvent that solvent refining processes is used both at home and abroad at present mainly contains furfural, phenol, solvent pairs, N-Methyl pyrrolidone (NMP) etc. External solvent treatment technology is mainly used in the production of lubricating oil, and new device mostly adopts nmp solvent to refine. At America & Canada, after entering the nineties, furfural treatment share drops to 30% by 40%, and phenol treating drops to by 28% that 10%, NMP is refining rises to 56%, instead of furfural and phenol treating, occupies first place. In China, furfural treatment is the main mode of solvent treatment, accounts for the 75.8% of all solvent refining units, accounts for the 80.3% of total processing power.
But current solvent refining processes often adopts single solvent to extract, test obtains extracting out oil aromaticity content after proving single solvent extraction can reach 80%, and the extraction oil aromaticity content adopting complex solvent extraction to obtain can up to 90%, therefore the effect of single solvent extraction is not as the effect of extracting of complex solvent, and complex solvent is more suitable for the refining of mink cell focus. The selectivity height of complex solvent, the treated oil quality of the FCC slurry refined with complex solvent is better, receipts rate height, can be used as FCC feedstock and marine fuel oil. Extract out in oil and it be enriched a large amount of condensed-nuclei aromaticss (> 80%), can be used as the raw material producing the chemical products with high added-value such as high aromatic rubber oil, needle coke, softening agent, there is good economic benefit.
Summary of the invention
It is an object of the invention to provide a kind of method extracting catalytically cracked oil aromatic hydrocarbons; The method of multi-stage counter current extraction is adopted under suitable temperature, agent-oil ratio, select that heavy arene, resin and asphalt are had strong dissolving power, the composite extraction agent refining catalytic slurry oil that selectivity coefficient is high, the extraction oil of production enrichment heavy arene, make its aromaticity content up to 90%, reach the requirement of high aromatic rubber oil. Solvent is carried out recycle and reuse simultaneously.
A kind of method extracting catalytically cracked oil aromatic hydrocarbons of the present invention; Comprise two parts:
First, taking complex solvent (dimethyl sulfoxide (DMSO) of 90% furfural+10%) as continuous phase in Impulse packing extraction tower, catalytic slurry be disperse phase in 60 DEG C, agent oil quality carry out extracting and separating than for when 2:1��3:1, obtain at the bottom of tower extracting phase out, tower top obtains taking out remaining phase.
Secondly, extract out phase, take out more than enter vacuum rectification tower mutually respectively, be 26.66KPa at pressure, reflux mass ratio is 1:1, carrying out the recovery of solvent when column bottom temperature is 121.8 DEG C, the entrance that two strands of solvents of recovery are all back to extraction tower recycles. Obtain extracting out oil de-except saturated point of quality after gum asphalt be that 7%(is lower than 10%), fragrance point quality is up to 92%, and the receipts rate extracting oil out is 43.6%, and the Property requirements such as flash-point, density, viscosity meet the requirement of high aromatic rubber oil; The saturated point of quality of raffinating oil obtained is 72%, and fragrance point quality is 25%, and the receipts rate raffinated oil is 56.4%, and character meets the requirement of residual fuel oil peculiar to vessel.
Technical process of the present invention, equipment are simply, easy and simple to handle, and processing condition relax, and energy consumption is low, and subject range width, is easy to large-scale industrial production. Utilize technique of the present invention and device can make the aromaticity content of extraction oil (de-except colloid, bituminous matter)>90%,<10%, oil property is better than the extraction of pure furfural to the saturated hydrocarbon content raffinated oil, solvent consumption<1%.
Embodiment
Embodiment 1
1) heat pre-treatment: catalytically cracked oil and composite extraction agent are heated to 60 DEG C simultaneously;
2) squeezing in Impulse packing extraction tower by composite extraction agent impeller pump, when extraction agent liquid level is to after between tower top overflow port and opening for feed, regulating flow, now also discharging flow at the bottom of adjusting tower, makes liquid level stabilizing between overflow port and opening for feed.
3) open light phase pump, make catalytic slurry by entering extraction tower at the bottom of tower, regulate the flow of catalytic slurry so that it is and carry out multi-stage counter current extraction between the agent-oil ratio 2:1��3:1 of extraction agent.
4) solvent recuperation: extract out phase, take out more than enter vacuum rectification tower mutually respectively, it is 26.66KPa at pressure, reflux ratio is 1:1, carries out vacuum flashing recycling design when column bottom temperature is 121.8 DEG C, and two strands of solvents of recovery all return extraction tower and recycle.
Claims (1)
1. one kind extracts the method for catalytic slurry aromatic hydrocarbons, it is characterised in that:
First, be continuous phase by the dimethyl sulfoxide (DMSO) of 90% furfural and 10% of quality in Impulse packing extraction tower, catalytic slurry be disperse phase in 60 DEG C, agent oil quality carry out extracting and separating than for when 2:1��3:1, obtain at the bottom of tower extracting phase out, tower top obtains taking out remaining phase;
Secondly, extract out phase, take out more than enter vacuum rectification tower mutually respectively, be 26.66KPa at pressure, reflux mass ratio is 1:1, carrying out the recovery of solvent when column bottom temperature is 121.8 DEG C, the entrance that two strands of solvents of recovery are all back to extraction tower recycles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310011028.0A CN103923690B (en) | 2013-01-11 | 2013-01-11 | Method for extracting and catalyzing aromatic hydrocarbon in oil slurry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310011028.0A CN103923690B (en) | 2013-01-11 | 2013-01-11 | Method for extracting and catalyzing aromatic hydrocarbon in oil slurry |
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| Publication Number | Publication Date |
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| CN103923690A CN103923690A (en) | 2014-07-16 |
| CN103923690B true CN103923690B (en) | 2016-06-08 |
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| CN201310011028.0A Active CN103923690B (en) | 2013-01-11 | 2013-01-11 | Method for extracting and catalyzing aromatic hydrocarbon in oil slurry |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109161378B (en) * | 2018-08-29 | 2020-10-16 | 中国海洋石油集团有限公司 | Method for preparing carbonaceous binder by using catalytic slurry oil and carbonaceous binder |
| CN112011363B (en) * | 2020-08-23 | 2022-08-19 | 吴志学 | Method for producing high-quality mesophase pitch raw material by circularly extracting heavy oil products |
| CN112521973A (en) * | 2020-11-03 | 2021-03-19 | 中国石油化工股份有限公司 | Method for continuously extracting catalytic slurry oil from furfural |
| CN112521974A (en) * | 2020-11-03 | 2021-03-19 | 中国石油化工股份有限公司 | Method for intermittently extracting catalytic slurry oil from furfural |
| CN112812802B (en) * | 2021-01-13 | 2022-04-15 | 中国石油大学(华东) | Continuous process for preparing mesophase pitch by refining raw oil |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870886A (en) * | 2010-06-07 | 2010-10-27 | 中国石油大学(华东) | Production method of environment-friendly rubber oil |
| CN101906317A (en) * | 2010-08-09 | 2010-12-08 | 华中科技大学 | Method for preparing environment-friendly aromatic oil from catalytic cracking slurry oil |
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- 2013-01-11 CN CN201310011028.0A patent/CN103923690B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870886A (en) * | 2010-06-07 | 2010-10-27 | 中国石油大学(华东) | Production method of environment-friendly rubber oil |
| CN101906317A (en) * | 2010-08-09 | 2010-12-08 | 华中科技大学 | Method for preparing environment-friendly aromatic oil from catalytic cracking slurry oil |
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| CN103923690A (en) | 2014-07-16 |
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