CN101514294B - Method for reducing aviation kerosene corrosion - Google Patents
Method for reducing aviation kerosene corrosion Download PDFInfo
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- CN101514294B CN101514294B CN2009100645157A CN200910064515A CN101514294B CN 101514294 B CN101514294 B CN 101514294B CN 2009100645157 A CN2009100645157 A CN 2009100645157A CN 200910064515 A CN200910064515 A CN 200910064515A CN 101514294 B CN101514294 B CN 101514294B
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- aviation kerosene
- decompression
- stripping tower
- corrosion
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Abstract
The invention discloses a method for reducing aviation kerosene corrosion. The method comprises the following steps: a liquid phase object from a separator flows into an aviation kerosene stripping tower to be stripped; bottom oil of the aviation kerosene stripping tower enters a decompression tower, and contacts a stripping medium under pressure of between -0.09 and -0.01MPa (surface) and temperature of between 60 and 180 DEG C to carry out decompression stripping; and gas is exhausted from the top of the decompression stripping tower, and purified aviation kerosene is exhausted from the bottom of the decompression stripping tower.
Description
Technical field
The invention belongs under the situation that does not have hydrogen and make with extra care hydrocarbon ils, particularly remove aviation kerosene hydrogen sulfide method with stripping with steam stripped method.
Background technology
At present; Hydrogen addition technology is one of effective technology of producing the aviation kerosene product; Aviation kerosene silver slice corrosion problem is the subject matter of restriction aviation kerosene quality product, and aviation kerosene unifining is in the presence of certain temperature, pressure and catalyzer, sulfide wherein to be converted into hydrogen sulfide.Hydrogen sulfide has extremely strong corrosive nature, generally be utilize stripping with it in the stripping removed overhead, the simple substance elementary sulfur that residual hydrogen sulfide oxidation generates in the aviation kerosene is to cause the underproof essential substance of aviation kerosene silver slice corrosion.Show that according to the correlative study analytical results when hydrogen sulfide content in the aviation kerosene was 0.3～0.5 μ g/g, the easy oxidation of hydrogen sulfide generated the simple substance elementary sulfur.Containing 0.5 μ g/g simple substance elementary sulfur in the aviation kerosene will cause the product silver slice corrosion defective.When coexisting with mercaptan sulfur and mercaptan sulfur when reaching 40 μ g/g, the elementary sulfur of 0.2 μ g/g can make silver slice corrosion reach 2 grades.Because the dissolved elementary sulfur is difficult to remove in the aviation kerosene product, directly influences the aviation kerosene product export, the hydrogen sulfide that how to remove trace in the aviation kerosene product is the outstanding problem that each enterprise needs to be resolved hurrily.Adopt hydrogen addition technology to produce aviation kerosene, can remove the sulfide in the raw material, hydrogenation reaction product is a mixed phase; Carry out gas-liquid separation through light pressure separator, isolate gas phase and liquid phase, liquid product gets into the aviation kerosene stripping tower; To remove hydrogen sulfide wherein, this stripping tower adopts the stripping that heavily boils, and the pressure of light pressure separator is between 1.2～1.5MPa (table) usually; With this understanding; Be dissolved with partial vulcanization hydrogen and lighter hydrocarbons in the liquid product, for guaranteeing the yield of aviation kerosene, pressure of stripping tower is controlled at the most of hydrogen sulfide of 0.2～0.3MPa (table) usually and can be removed at the stripping cat head; Trace hydrogen sulfide is difficult in the stripping removed overhead in the aviation kerosene and be dissolved in, and is dissolved in that trace hydrogen sulfide can cause the aviation kerosene silver slice corrosion defective in the aviation kerosene.
Be dissolved in order to solve that trace hydrogen sulfide can cause the underproof problem of aviation kerosene silver slice corrosion in the aviation kerosene; At present hydrogen sulfide that adopt the method for setting up digester to remove trace in the aviation kerosene though the hydrogen sulfide and the elemental sulfur of trace can be effectively deviate from this measure, because adsorption desulfurizing agent costs an arm and a leg more; Need a plurality of digester blocked operations; Consume greatlyyer, production cost is bigger, the restriction economic benefit of enterprises.
Summary of the invention
In order to overcome the shortcoming of prior art; The invention provides a kind of method that reduces aviation kerosene corrosion; Utilize a kind of combination stripping to take off trace hydrogen sulfide in the aviation kerosene, reduce corrosion, it is simple that this method has technology; Aviation kerosene after the processing satisfies the silver slice corrosion requirement, and other indexs satisfy the requirement of military aviation kerosene quality product.
The present invention proposes a kind of method that reduces aviation kerosene corrosion; Concrete technical scheme is: the liquid phase stream that comes from separator gets into the aviation kerosene stripping tower and carries out stripping, and oil gets into the decompression stripping tower at the bottom of the aviation kerosene stripping Tata, be-0.09 at pressure～-0.01MPa (table); Preferably-0.07～-0.04MPa (table); Temperature is the stripping that reduces pressure under 60～180 ℃ of conditions, and the stripping medium gets into the decompression stripping tower by decompression stripping tower bottom, and stripping medium amount is for getting into the 0.5 weight %～2.0 weight % of decompression stripping tower aviation kerosene; Gas is discharged from decompression stripping cat head, and the aviation kerosene after the purification is discharged at the bottom of decompression stripping Tata.
The aviation kerosene stripping tower stripping tower that boils of attaching most importance to.Decompression stripping cat head evacuation system can adopt vacuum jet or water ring vacuum pump.
Oil is to get into the decompression stripping tower by the top at the bottom of the aviation kerosene stripping Tata.
Described stripping medium is the not hydrogen sulfide containing gases such as fuel gas after hydrogen, nitrogen, water vapour or the smart desulfurization.
The described decompression stripping tower stripping tower that boils of attaching most importance to.
The present invention is that a kind of solution aviation kerosene product corrodes underproof method; Installing handled raw oil is the virgin kerosene cut of atmospheric distillation plant; Boiling range is generally 145～260 ℃; Reaction product through behind hydrogenating desulfurization, the mercaptan removal is carried out gas-liquid separation in light pressure separator, the promptly low branch oil of the liquid phase after the separation is charging of the present invention.
The present invention has recommended decompression stripping tower operational condition; The technician can be according to the difference of the device character that processes raw material and the practical situation of original device; When technological design, each configuration of devices of the present invention and each operational condition are optimized; On experiment or mimic basis, adjust accordingly according to the requirement of feedstock property, product corrosion class.
Compared with prior art, method of the present invention has following characteristics:
1) hydrogen sulfide content in the J-4 fuel product is low, can reach＜0.1 μ g/g, satisfies army's boat aviation kerosene quality product requirement;
2) to have technology simple for this method, and Stripping effect is complete, and is simple to operate, and cost is low.
Description of drawings
Fig. 1: typical process synoptic diagram of the present invention
Liquid, 15 decompression stripping column bottoms pumps, 16 air coolers, 17 aftercoolers at the bottom of liquid, 9 heated stream, 10 decompression stripping overhead gases, 11 evacuation system, 12 stripping media, 13 spargers, the 14 decompression stripping towers at the bottom of 1 aviation kerosene stripping tower, 2 decompression stripping towers, 3 liquid phase streams, 4 interchanger, 5 aviation kerosene stripping column bottoms pumps, 6 aviation kerosene stripping bottom reboilers, 7 aviation kerosene stripping overhead gases, the 8 aviation kerosene stripping towers.
Embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is elaborated, accompanying drawing not delimit the scope of the invention just for the present invention is described.
Shown in accompanying drawing 1; Liquid phase stream 3 is through getting into aviation kerosene stripping tower 1 after oil 8 heat exchange at the bottom of interchanger 4 and the aviation kerosene stripping tower; 1 end of aviation kerosene stripping tower, be provided with stripping bottom reboiler 6; This reboiler thermal source is provided by heated stream 9, and aviation kerosene stripping overhead gas 7 goes out device after refrigerated separation, and liquid 8 gets into decompression stripping tower 2 at the bottom of the aviation kerosene stripping tower after interchanger 4 heat exchange; In the decompression stripping tower column plate or filler are housed; Stripping medium 12 is by being blown into the decompression stripping tower at the bottom of the tower at the bottom of the decompression stripping tower after gas distributor 13 distributes, and decompression stripping overhead gas 10 is to decompression evacuation system 11, through liquid at the bottom of the decompression stripping tower behind the stripping be J-4 fuel 14 through decompression stripping column bottoms pump 15 boost after air cooler 16, aftercooler 17 cool off after to the product tank field.
Claims (7)
1. method that reduces aviation kerosene corrosion; It is characterized in that: the liquid phase stream that comes from separator gets into the aviation kerosene stripping tower and carries out stripping; Oil gets into the decompression stripping tower at the bottom of the aviation kerosene stripping Tata, be-0.09 at pressure～-the 0.01MPa gauge pressure, temperature is to contact the stripping that reduces pressure with the stripping medium under 60～180 ℃ of conditions; Gas is discharged from decompression stripping cat head; Aviation kerosene after the purification is discharged at the bottom of decompression stripping Tata, and the stripping medium decompression stripping tower bottom of serving as reasons gets into the decompression stripping tower, and stripping tolerance is for getting into the 0.5 weight %～2.0 weight % of decompression stripping tower aviation kerosene.
2. according to the described a kind of method that reduces aviation kerosene corrosion of claim 1, it is characterized in that: the decompression pressure of stripping tower is-0.07～-the 0.04MPa gauge pressure.
3. according to the described a kind of method that reduces aviation kerosene corrosion of claim 1, it is characterized in that: the aviation kerosene stripping tower stripping tower that boils of attaching most importance to.
4. according to the described a kind of method that reduces aviation kerosene corrosion of claim 1, it is characterized in that: oil is to get into the decompression stripping tower by the top at the bottom of the aviation kerosene stripping Tata.
5. according to the described a kind of method that reduces aviation kerosene corrosion of claim 1, it is characterized in that: the decompression stripping tower stripping tower that boils of attaching most importance to.
6. according to the described a kind of method that reduces aviation kerosene corrosion of claim 1, it is characterized in that: decompression stripping tower stripping medium is: the not hydrogen sulfide containing gas of the fuel gas after hydrogen, nitrogen, water vapour or the smart desulfurization.
7. according to the described a kind of method that reduces aviation kerosene corrosion of claim 1, it is characterized in that: decompression stripping cat head evacuation system is vacuum jet or water ring vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100645157A CN101514294B (en) | 2009-03-31 | 2009-03-31 | Method for reducing aviation kerosene corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100645157A CN101514294B (en) | 2009-03-31 | 2009-03-31 | Method for reducing aviation kerosene corrosion |
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| Publication Number | Publication Date |
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| CN101514294A CN101514294A (en) | 2009-08-26 |
| CN101514294B true CN101514294B (en) | 2012-11-07 |
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| CN2009100645157A Active CN101514294B (en) | 2009-03-31 | 2009-03-31 | Method for reducing aviation kerosene corrosion |
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| CN109722304A (en) * | 2019-01-28 | 2019-05-07 | 海南汉地阳光石油化工有限公司 | A kind of production method of hydraulic oil |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071684A (en) * | 1992-08-07 | 1993-05-05 | 锦州石油化工公司锦州炼油厂 | The process for purification of distillate |
| CN1356375A (en) * | 2000-12-05 | 2002-07-03 | 中国石油化工股份有限公司 | Process for removing sulfide from gasoline fraction by solvent extraction |
| CN101376836A (en) * | 2007-08-27 | 2009-03-04 | 中国石油化工股份有限公司 | Cycloalkyl secondary processing gasoline and diesel hydrogenation method |
| CN101376826A (en) * | 2007-08-27 | 2009-03-04 | 中国石油化工股份有限公司 | Hydrogenation technological process for long distillate coking kerosene |
-
2009
- 2009-03-31 CN CN2009100645157A patent/CN101514294B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071684A (en) * | 1992-08-07 | 1993-05-05 | 锦州石油化工公司锦州炼油厂 | The process for purification of distillate |
| CN1356375A (en) * | 2000-12-05 | 2002-07-03 | 中国石油化工股份有限公司 | Process for removing sulfide from gasoline fraction by solvent extraction |
| CN101376836A (en) * | 2007-08-27 | 2009-03-04 | 中国石油化工股份有限公司 | Cycloalkyl secondary processing gasoline and diesel hydrogenation method |
| CN101376826A (en) * | 2007-08-27 | 2009-03-04 | 中国石油化工股份有限公司 | Hydrogenation technological process for long distillate coking kerosene |
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| CN101514294A (en) | 2009-08-26 |
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Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Applicant after: China Petrochemical Group Corp. Co-applicant after: Luoyang Petrochemical Engineering Corporation /SINOPEC Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Applicant before: China Petrochemical Group Corp. Co-applicant before: Luoyang Petrochemical Engineering Co., China Petrochemical Group |
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