CN1194294A - No-base deodorizing technology for aviation kerosene - Google Patents
No-base deodorizing technology for aviation kerosene Download PDFInfo
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- CN1194294A CN1194294A CN97101931A CN97101931A CN1194294A CN 1194294 A CN1194294 A CN 1194294A CN 97101931 A CN97101931 A CN 97101931A CN 97101931 A CN97101931 A CN 97101931A CN 1194294 A CN1194294 A CN 1194294A
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- aviation kerosene
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- activator
- deodorization
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Abstract
The present invention features that aviation kerosene and activator solution after full mixing in mixer, together with air, are passed through catalyst bed layer to desulfurize. The said technological process of the present invention has no base liquid drained; is also suitable for aviation kerosene with high acidity, high sulfur content and high thioalcohol content; and has simple flow path, low cost and good deodorizing effect. In addition, it has also high catalyst activity, long catalyst bed life and simple activating process.
Description
The invention relates to a deodorization process of an alkali-free liquid activator for aviation kerosene, which belongs to the refining of a mixture mainly containing hydrocarbons.
The aviation kerosene deodorization in the prior art adopts a Merox (molecular sieve deodorization) process, and the basic reaction is to oxidize mercaptan into disulfide by using molecular oxygen in the presence of an alkaline medium and a catalyst, so as to achieve the aim of deodorization, namely:
the disadvantage of the existing Merox process is the lye discharge. No matter the liquid-liquid method or the fixed bed deodorization, alkali liquor is discharged, and the environment is polluted. For the raw material aviation kerosene with high acidity, large sulfur content and high mercaptan content, alkali washing pretreatment is needed, partial alkali liquor is injected to remove partial mercaptan and reduce the acidity, so that the deodorization can be solved, and the discharge of waste alkali liquor is increased; for the raw material aviation kerosene, the problem of copper loss is also frequently caused, and the catalyst is inactivated, so that the aviation kerosene has high copper ion content, which is also the defect of the Merox process.
The mercaptane oxidation of the Merox process belongs to heterogeneous oxidation, which is that under the coexistence condition of oil phase and alkali phase, the oxidation speed is determined by the transfer of the mercaptane from the oil phase to the alkali phase, and the solubility of the mercaptane in the alkali phase is rapidly reduced along with the increase of the molecular weight of the mercaptane. Therefore, in the coexistence of oil and alkali phases, the high molecular mercaptan is difficult to remove.
The invention aims to overcome the defects of the prior art and provides a deodorization process without an alkali liquor activator.
The process of the invention is realized by the following steps: the raw material aviation kerosene and the activating agent solution are fully mixed by a mixer and then pass through a catalyst bed layer together with air. The process flow is shown in the attached drawing: the raw material aviation kerosene C is mixed with activator solution A from a container 1 and a pump 2 and compressed air B in a static mixer 4 after passing through a pump 3, then enters a reactor 5 and a reactor 6, mercaptan catalytic oxidation reaction is carried out under the action of bed catalyst, mercaptan is converted into disulfide, and finally aviation kerosene D is distilled from the reactor 6.
The catalyst is loaded on the adsorbent of the reactor fixed bed in advance, the adsorbent is alkaline, and mercaptan oxidation is to perform deodorization by passing a homogeneous system of oil and trace activator and oxidant (air) through the reactor fixed bed.
The activating agent is a sweetening aid, plays a role in sweetening synergism, enables sweetening reaction to be carried out under a homogeneous phase, avoids the problem of phase transfer, accelerates RsH oxidation, enhances deodorization capability, can remove micromolecule mercaptan, also can remove macromolecule mercaptan, and improves sweetening effect. The activator can also remove coke and aromatic hydrocarbon adsorbed on the surface of the adsorbent, thereby improving the activity of the fixed bed catalyst and prolonging the service life of the catalyst.
The catalyst adopts sulfonated cobalt phthalocyanine or poly cobalt phthalocyanine.
The adsorbent can be silica gel, activated carbon, ion exchange resin, etc.
By adopting the alkali-free deodorization process for aviation kerosene, alkali liquor is not discharged, and theenvironment is not polluted; the process of the invention is still applicable to raw material aviation kerosene with high acidity, large sulfur content and high mercaptan content, and is beneficial to processing raw material aviation kerosene of foreign crude oil; the process flow is simple, the cost is low, and the deodorization effect is good; high catalyst activity, long bed life and simple activating method after deactivation.
The attached figure is a flow chart of the deodorization process of the aviation kerosene alkali-free liquid activator.
The process of the present invention is further illustrated below with reference to examples.
Example 1
Raw material aviation kerosene for refining Daqing crude oil, mercaptan content 36X 10-6。
The process flow is shown in the attached figure, 1 is an activator tank, phi 800 multiplied by 1466; 2 is an activator pump, ZS1/2B, C1/2B; 3 is a raw material pump, SDH 1.5-16X 3; 4 is a static mixer, SV 2.3/2.5-16-500A; 5 and 6 are reactors,. phi.300X 4718.
The treatment capacity is 400L/h, the pressure is 0.08MPa, the normal temperature is adopted, the air injection rate is 40L/h, and the injection dosage is 10 multiplied by 10-6. Adopts ZX-1827 activator, sulfonated cobalt phthalocyanine catalyst produced by Jilin and industrial activated carbon adsorbent produced by Hainan Qiongchi industry company.
The preparation method of the catalyst bed layer comprises the following steps: and (3) loading the activated carbon into a reactor, then injecting a sodium hydroxide solution containing sulfonated cobalt phthalocyanine into a bed layer of the reactor, repeatedly circulating for a plurality of times, soaking for more than 5 hours, and withdrawing the redundant alkali liquor.
The process operates as a conventional fixed bed. The mercaptan content of the aviation kerosene product obtained at the 6 distillation outlet of the reactor is 1-8 multiplied by 10-6The desulfurization rate is 95 percent, the chroma is less than 1, and the corrosion is qualified.
Example 2
Raw material aviation kerosene of refined Sauter crude oil, the mercaptan content of which is 76 multiplied by 10-6. The treatment capacity is 400L/h, the pressure is 0.07MPa, the normal temperature is adopted, the air injection rate is 40L/h, and the injection dosage is 15 multiplied by 10-6Otherwise, the mercaptan content of the aviation kerosene product obtained at the distillation outlet is 4-9X 10-6The removal rate is 88-95%, the chroma is less than 1, and the corrosion is qualified.
Example 3
Raw material aviation kerosene of refined Aman crude oil, mercaptan content 106X 10-6. The treatment capacity is 400L/h, the pressure is 0.08MPa, the normal temperature is adopted, the air injection rate is 50L/h, and the injection dosage is 20 multiplied by 10-6Otherwise, the mercaptan content of the aviation kerosene product obtained at the distillation outlet is 5-25X 10-6The removal rate is 88-92%, the chroma is less than 1, and the corrosion is qualified.
Example 4
Raw material aviation kerosene of refined Iran crude oil, mercaptan content 99X 10-6. The treatment capacity is 400L/h, the pressure is 0.10MPa, the normal temperature is adopted, the air injection rate is 60L/h, and the injection dosage is 20 multiplied by 10-6Otherwise, the mercaptan content of the aviation kerosene product obtained at the distillation outlet is 1-15X 10-6The removal rate is 86-94%, the chroma is less than 1, and the corrosion is qualified.
Claims (5)
1. The deodorizing process of no-alkali liquid activator for aviation kerosene features that aviation kerosene and activator solution as material are mixed in mixer and passed through catalyst bed together with air.
2. The deodorisation process according to claim 1, wherein the catalyst bed is prepared by a process comprising: and (3) filling the activated adsorbent into a reactor, then injecting a sodium hydroxide solution containing the catalyst into a bed layer of the reactor, repeatedly circulating for a plurality of times, soaking for more than 5 hours, and withdrawing the redundant alkali liquor.
3. The deodorisation process according to claim 1 or 2, wherein said catalyst is cobalt phthalocyanine sulphonate.
4. The deodorization process as claimed in claim 1, wherein said activator is ZX-1827 activator.
5. The deodorization process as claimed in claim 2, wherein said adsorbent is activated carbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97101931A CN1194294A (en) | 1997-03-21 | 1997-03-21 | No-base deodorizing technology for aviation kerosene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97101931A CN1194294A (en) | 1997-03-21 | 1997-03-21 | No-base deodorizing technology for aviation kerosene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1194294A true CN1194294A (en) | 1998-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97101931A Pending CN1194294A (en) | 1997-03-21 | 1997-03-21 | No-base deodorizing technology for aviation kerosene |
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| CN (1) | CN1194294A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1102638C (en) * | 1999-10-01 | 2003-03-05 | 中国石化集团长岭炼油化工有限责任公司 | Preparation method of light oil product deodorization fixed bed catalyst impregnation liquid |
| WO2003042339A1 (en) * | 2001-11-13 | 2003-05-22 | Beijing Sj Environmental Protection And New Material Co.,Ltd. | Process for commercial-scale refining liquefied petroleum gas |
| CN103911177A (en) * | 2014-03-07 | 2014-07-09 | 武汉纺织大学 | Deep desulfurization method for saturated liquid hydrocarbon |
-
1997
- 1997-03-21 CN CN97101931A patent/CN1194294A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1102638C (en) * | 1999-10-01 | 2003-03-05 | 中国石化集团长岭炼油化工有限责任公司 | Preparation method of light oil product deodorization fixed bed catalyst impregnation liquid |
| WO2003042339A1 (en) * | 2001-11-13 | 2003-05-22 | Beijing Sj Environmental Protection And New Material Co.,Ltd. | Process for commercial-scale refining liquefied petroleum gas |
| US7342145B2 (en) | 2001-11-13 | 2008-03-11 | Beijing Sj Environmental Protection And New Material Co., Ltd. | Process for refining liquefied petroleum gas in a commercial scale |
| CN103911177A (en) * | 2014-03-07 | 2014-07-09 | 武汉纺织大学 | Deep desulfurization method for saturated liquid hydrocarbon |
| CN103911177B (en) * | 2014-03-07 | 2015-11-18 | 湖北华邦化学有限公司 | A kind of saturated liquid hydrocarbon deep desulfurization method |
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