CN104046380B - A kind of crude oil with poor quality pretreatment technology - Google Patents
A kind of crude oil with poor quality pretreatment technology Download PDFInfo
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- CN104046380B CN104046380B CN201310095137.5A CN201310095137A CN104046380B CN 104046380 B CN104046380 B CN 104046380B CN 201310095137 A CN201310095137 A CN 201310095137A CN 104046380 B CN104046380 B CN 104046380B
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Abstract
The invention belongs to crude oil upgrading field, the pretreated technique of a kind of crude oil with poor quality, export after pipeline mixing before emulsion splitter directly injects crude oil with poor quality pump, between secondary electric desalting draining injection crude oil pump and static mixer on pipeline, after static mixer mixing, enter one-level electrical desalter and secondary electrical desalter, after secondary electric desalting, crude oil enters following process device.Electrical desalter internal emulsification liquid is separated after extracting out, and demetalization auxiliary agent enters pipeline between whizzer and microwave generator by auxiliary agent infusion.The method adopting centrifugation and microwave demetalization to combine processes the emulsion produced in crude oil with poor quality electric desalting process, and the thorough refinery processing crude oil with poor quality that solves causes the problems such as electrical desalter internal emulsification oil is piled up seriously, electric current increase, desalting and dewatering weak effect.
Description
Technical field
The invention belongs to crude oil upgrading field, relate to the process recovery process of a kind of crude oil with poor quality desalting and dewatering and tank internal emulsification liquid in particular.
Background technology
Along with in world wide, crude resources is towards in poor quality, heaviness future development.The ratio of domestic and international Petrochemical Enterprises processing crude oil with poor quality also rises year by year.Crude oil with poor quality has following feature: high-density, high viscosity, high oil hydrochlorate or high-sulfur, high asphalt content, high solid foreign matter content etc., this will make a big impact to follow-up refining processing.What stand in the breach is the first operation electric desalting of crude oil upgrading, crude oil in poor quality has made a lot of refineries electric desalting apparatus serious emulsification, thick emulsion layer is piled up in tank, make oil water interface fuzzy, and containing a large amount of strong electroconductibility polar material in emulsion layer, cause electric desalting apparatus electric current unstable, even superelevation tripping operation, not only reduce desalting and dewatering qualification rate, affect electric desalting apparatus safe and stable operation simultaneously.
Electric desalting operation is bad usually causes the serious salt crust of atmospheric and vacuum distillation unit, and affect the normal production order in refinery, draining water quality inferiority brings very large burden to sewage disposal, bears environmental protection pressure simultaneously.Crude oil with poor quality metals content impurity is high in addition, enters follow-up secondary processing device, cause catalyzer coking, poisoning, even completely lose activity, not only reduce product quality, too increase production cost.Although the electric desalting technology of crude oil upgrading is through the development of decades, power supply mode, electrode plate structure and operation achieve rapid progress, in the pre-treatment of reply crude oil with poor quality, can not meet the demands far away.
Chinese patent CN201354360 discloses a kind of extraction structure of electrical desalter emulsion, Chinese patent CN201581056U also discloses a kind of extraction structure of emulsion, but do not relate to for the treatment for reuse aspect of extracting emulsion out, conventional crude pre-treatment has become the important bottleneck of refinery processing crude oil with poor quality.
Summary of the invention
The object of the present invention is to provide the pretreated technique of a kind of crude oil with poor quality, the method adopting centrifugation and microwave demetalization to combine processes the emulsion produced in crude oil with poor quality electric desalting process, the whole freshening of crude oil after process, the thorough refinery processing crude oil with poor quality that solves causes the problems such as electrical desalter internal emulsification oil is piled up seriously, electric current increase, desalting and dewatering weak effect.
The pretreated technique of a kind of crude oil with poor quality of the present invention, it is characterized in that: export after pipeline mixing before emulsion splitter injects crude oil with poor quality pump, between secondary electric desalting draining injection crude oil pump and one-level static mixer on pipeline, crude oil, emulsion splitter and secondary electric desalting draining enter one-level electrical desalter after the mixing of one-level static mixer, after water filling crude oil after one-level electric desalting that waterflood pump is next mixes, enter secondary electrical desalter through secondary static mixer, after secondary electric desalting, crude oil enters following process device.One-level electrical desalter internal emulsification liquid is extracted equipment out through one-level emulsion and is extracted out, enter whizzer to be separated, be separated water outlet and directly enter electric desalting water exhaust system, be separated and fuel-displacedly enter microwave generator, demetalization auxiliary agent enters pipeline between whizzer and microwave generator by auxiliary agent infusion, carries out freshening or before entering secondary static mixer, pipeline carries out freshening before the crude oil of microwave demetalization process returns crude oil pump.
The pretreated technique of a kind of crude oil with poor quality of the present invention, it is further characterized in that: described emulsion splitter directly injects pipeline before crude oil with poor quality pump by emulsion splitter pump, exports after crude oil pump mixing.
The pretreated technique of a kind of crude oil with poor quality of the present invention, it is further characterized in that: described one-level electrical desalter internal emulsification liquid is extracted equipment out through one-level emulsion and extracted out, enter electric centrifuge to be separated, be separated water outlet and directly enter electric desalting water exhaust system, be separated and fuel-displacedly enter pipeline type microwave producer, demetalization auxiliary agent enters pipeline between electric centrifuge and pipeline type microwave producer by auxiliary agent infusion.
After emulsion is arranged by such scheme of the present invention, former electric desalting apparatus oil water interface can be made steady and audible outward, ratio of desalinization improves, and reduces electric desalting electric current, reduces energy consumption.
In the present invention, the method for extracting out continuously taked by emulsion, and in maintenance electrical desalter, water-oil interface is relatively stable.
In the present invention, emulsion can be divided into oil, water and solid impurity three-phase by electric centrifuge, and wherein oil and water flow out continuously, and solid impurity is interrupted cleaning.
In the present invention, pipeline type microwave producer adopts processed continuously mode, utilizes microwave action to accelerate the reaction process of metal in metal remover and crude oil.
Before crude oil can select to return crude oil pump after microwave treatment in the present invention or before secondary mixer, before preferably returning crude oil pump, be conducive to the recycle of demetalization medicament.
The method that the present invention adopts centrifugation and microwave demetalization to combine is separated the most unmanageable emulsion in former preprocessing process, treatment capacity is no more than 20% of the total treatment capacity of crude oil, be generally only the 1-10% of the total treatment capacity of crude oil, easy to operate flexibly, facility investment is little.
The present invention adopts centrifugation to be stripped of solid impurities a large amount of in crude oil, salt and polar material, has purified separation oil phase; Carry out microwave demetalization to isolating oil phase, treatment capacity is little, and metal remover consumption is little, but can remove a large amount of metallic impurity of enrichment in emulsion; Adopt above-mentioned technique, substantially do not changing on former electric desalting pretreatment technology process base, solve the serious emulsification problem in the crude oil with poor quality course of processing, eliminate former electrical desalter internal emulsification layer, reduce former electric desalting apparatus electric current, improve former electric desalting apparatus desalting and dewatering efficiency, making the smooth freshening of crude oil after separation, both having reduced energy consumption by economizing in raw materials.Not only solve an emulsification difficult problem but also avoid crude oil to waste.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of crude oil with poor quality pretreatment technology of the present invention schematic diagram,
Accompanying drawing 2 is the present invention's another kind of crude oil with poor quality pretreatment technology schematic diagram.
Reference numeral shown in figure is: 1-crude oil pump, 2-emulsion splitter pump, 3-waterflood pump, 4-level static mixer, 5-one-level electrical desalter, 6-secondary static mixer, 7-secondary electrical desalter, equipment extracted out by 8-one-level emulsion, 9-electric centrifuge, 10-auxiliary agent pump, 11-pipeline type microwave producer, 12-one-level electrical desalter water port, crude oil relief outlet after the electric desalting of 13-secondary, 14-electric centrifuge water port.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further detailed explanation, and the drawings and specific embodiments do not limit the scope of protection of present invention.
As shown in Figure 1, crude oil with poor quality pretreatment unit provided by the invention, comprise crude oil pump 1, emulsion splitter pump 2, waterflood pump 3, one-level static mixer 4, one-level electrical desalter 5, secondary static mixer 6, secondary electrical desalter 7, one-level emulsion extract equipment 8, electric centrifuge 9, auxiliary agent pump 10 out, pipeline type microwave producer 11.Between aforesaid device by crude oil pipeline, waterflood-transmission line, injecting pipeline and after being separated crude oil pipeline be connected, the pipeline of turnover tank is provided with control valve.
Emulsion shown in accompanying drawing 1 is extracted equipment 8 out and is arranged on one-level electrical desalter internal emulsification layer position, emulsion should be able to be made evenly to extract out, avoid causing fluctuation to liquid level in electrical desalter as far as possible.The extraction equipment different according to electric desalting apparatus feeding manner different choice and distributing position, if electric desalting apparatus adopts advection charging, then extract that set should near the electric desalting apparatus opening for feed the other end out; If employing bottom in and top out, extraction equipment should be evenly distributed on whole emulsion layer.Reach best according to the distribution of emulsion and extract effect out.
Shown in accompanying drawing 1, the idiographic flow of crude oil with poor quality pretreatment unit is as follows: emulsion splitter directly injects pipeline before crude oil with poor quality pump by emulsion splitter pump 2, export after crude oil pump 1 mixes, between secondary electric desalting draining injection crude oil pump 1 and one-level static mixer 4 on pipeline, crude oil, emulsion splitter and water filling enter one-level electrical desalter 5 after one-level static mixer 4 mixes, after the water filling of waterflood pump 3 is de-with one-level, crude oil enters secondary electrical desalter through secondary static mixer 6 after mixing, and after secondary is de-, crude oil enters following process device.One-level electrical desalter internal emulsification liquid enters electric centrifuge 9 and is separated after one-level emulsion extraction equipment 8 is extracted out, be separated water outlet and directly enter electric desalting water exhaust system, be separated and fuel-displacedly enter pipeline type microwave producer 11, demetalization auxiliary agent injects pipeline between electric centrifuge 9 and pipeline type microwave producer 11 by auxiliary agent pump 10, and before the crude oil of microwave demetalization process enters crude oil pump 1, pipeline carries out freshening.
Shown in accompanying drawing 2, the idiographic flow of crude oil with poor quality pretreatment unit is as follows: emulsion splitter directly injects pipeline before crude oil with poor quality pump by emulsion splitter pump 2, export after crude oil pump 1 mixes, between secondary electric desalting draining injection crude oil pump 1 and one-level static mixer 4 on pipeline, crude oil, emulsion splitter and water filling enter one-level electrical desalter 5 after one-level static mixer 4 mixes, after the water filling of waterflood pump 3 is de-with one-level, crude oil enters secondary electrical desalter through secondary static mixer 6 after mixing, and after secondary is de-, crude oil enters following process device.One-level electrical desalter internal emulsification liquid enters electric centrifuge 9 and is separated after one-level emulsion extraction equipment 8 is extracted out, be separated water outlet and directly enter electric desalting water exhaust system, be separated and fuel-displacedly enter pipeline type microwave producer 11, demetalization auxiliary agent injects pipeline between electric centrifuge 9 and pipeline type microwave producer 11 by auxiliary agent pump 10, and before the crude oil of microwave demetalization process enters secondary static mixer 6, pipeline carries out freshening.
Claims (5)
1. a crude oil with poor quality pretreatment technology, it is characterized in that: export after pipeline mixing before emulsion splitter injects crude oil with poor quality pump, between secondary electric desalting draining injection crude oil pump and one-level static mixer on pipeline, crude oil, emulsion splitter and secondary electric desalting draining enter one-level electrical desalter after the mixing of one-level static mixer, secondary electrical desalter is entered through secondary static mixer after water filling crude oil after one-level electric desalting that waterflood pump is next mixes, after secondary electric desalting, crude oil enters following process device, one-level electrical desalter internal emulsification liquid is extracted equipment out through one-level emulsion and is extracted out, enter whizzer to be separated, be separated water outlet and directly enter electric desalting water exhaust system, be separated and fuel-displacedly enter microwave generator, demetalization auxiliary agent enters pipeline between whizzer and microwave generator by auxiliary agent infusion, freshening is carried out or before entering secondary static mixer, pipeline carries out freshening before the crude oil of microwave demetalization process returns crude oil pump, described emulsion splitter directly injects pipeline before crude oil with poor quality pump by emulsion splitter pump, exports after crude oil pump mixing.
2. a kind of crude oil with poor quality pretreatment technology according to claim 1, is characterized in that: carry out freshening before the described crude oil through microwave demetalization process returns crude oil pump.
3. a kind of crude oil with poor quality pretreatment technology according to claim 1, it is characterized in that: described one-level electrical desalter internal emulsification liquid is extracted equipment out through one-level emulsion and extracted out, enter electric centrifuge to be separated, be separated water outlet and directly enter electric desalting water exhaust system, be separated and fuel-displacedly enter pipeline type microwave producer, demetalization auxiliary agent enters pipeline between electric centrifuge and pipeline type microwave producer by auxiliary agent infusion.
4. a kind of crude oil with poor quality pretreatment technology according to claim 1, is characterized in that: the method for extracting out continuously taked by described emulsion, and in maintenance electrical desalter, water-oil interface is relatively stable.
5. a kind of crude oil with poor quality pretreatment technology according to claim 3, is characterized in that: described pipeline type microwave producer adopts processed continuously mode, utilizes microwave action to accelerate the reaction process of metal in metal remover and crude oil.
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| CN201310095137.5A CN104046380B (en) | 2013-03-15 | 2013-03-15 | A kind of crude oil with poor quality pretreatment technology |
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| CN104046380A CN104046380A (en) | 2014-09-17 |
| CN104046380B true CN104046380B (en) | 2016-02-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104498084B (en) * | 2014-11-15 | 2017-06-27 | 中海石油舟山石化有限公司 | The processing method of crude oil desalting depickling |
| CN108707472A (en) * | 2017-11-23 | 2018-10-26 | 史玉成 | It is a kind of using high voltage electric field to the primary pretreated process equipment of crude oil |
Citations (5)
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| CN1418934A (en) * | 2001-11-14 | 2003-05-21 | 中国石化集团洛阳石油化工工程公司设备研究所 | Techonlogical method for removing naphthenic acid from crude oil and distillated oil |
| CN101121898A (en) * | 2007-07-30 | 2008-02-13 | 辽宁大学 | Fast emulsion breaking method |
| CN101161789A (en) * | 2007-11-27 | 2008-04-16 | 辽宁大学 | Sand-containing emulsification crude oil demulsification method |
| CN102746881A (en) * | 2011-04-21 | 2012-10-24 | 中国石油化工股份有限公司 | Crude oil demetallization method |
| CN202688275U (en) * | 2011-12-07 | 2013-01-23 | 中国石油化工股份有限公司 | Crude oil demetalization device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7014773B2 (en) * | 2003-02-21 | 2006-03-21 | Exxonmobil Research And Engineering Company | Demulsification of emulsions by socillatory mixing |
| EP2736618B1 (en) * | 2011-07-26 | 2018-01-24 | Saudi Arabian Oil Company | Dynamic demulsification system for use in a gas-oil separation plant |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1418934A (en) * | 2001-11-14 | 2003-05-21 | 中国石化集团洛阳石油化工工程公司设备研究所 | Techonlogical method for removing naphthenic acid from crude oil and distillated oil |
| CN101121898A (en) * | 2007-07-30 | 2008-02-13 | 辽宁大学 | Fast emulsion breaking method |
| CN101161789A (en) * | 2007-11-27 | 2008-04-16 | 辽宁大学 | Sand-containing emulsification crude oil demulsification method |
| CN102746881A (en) * | 2011-04-21 | 2012-10-24 | 中国石油化工股份有限公司 | Crude oil demetallization method |
| CN202688275U (en) * | 2011-12-07 | 2013-01-23 | 中国石油化工股份有限公司 | Crude oil demetalization device |
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