CN102492463A - Hydrocarbon washing refining method - Google Patents
Hydrocarbon washing refining method Download PDFInfo
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- CN102492463A CN102492463A CN2011104071197A CN201110407119A CN102492463A CN 102492463 A CN102492463 A CN 102492463A CN 2011104071197 A CN2011104071197 A CN 2011104071197A CN 201110407119 A CN201110407119 A CN 201110407119A CN 102492463 A CN102492463 A CN 102492463A
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Abstract
The invention provides a hydrocarbon washing refining method. The method organically combines a gasoline fractionation cutting system with a tower top washing refining system and is an advanced technology combination integrated with fractionation and washing refining; and raw material refining and fractionation unit operations are combined and carried out in one tower, and water-soluble impurities in tower top light gasoline which is obtained after full-fraction gasoline is cut and separated by a fractionation tower are separated by using a gas-phase washing method to be dissolved in water, so that the separation of gas, oil and water is completed in a fraction tower return tank, and impurity-containing sewage is removed in a dehydration ladle, thereby achieving the purpose of removing the impurities by washing and refining the raw material.
Description
Technical field
The invention belongs to refining of petroleum specialty hydro carbons purification techniques field, particularly the process for purification of hydro carbons washing such as a kind of gasoline.
Background technology
In the refining of petroleum field, often need wash refiningly to hydro carbons such as gasoline, liquefied gas, main purpose is to remove water-soluble impurity, the catalyzer of protection downstream processing.With the catalytic gasoline etherification technology is the example explanation.
The catalytically cracked gasoline etherification technology can be a tert-alkyl ether with tertiary carbon conversion of olefines in the catalytic cracking petroleum naphtha; Not only reduce olefin content in gasoline; Can also improve the octane value and the oxygen level of gasoline, and can reduce the vp of gasoline, be one of desirable technique of the friendly clean gasoline of production environment.
The catalytic gasoline ether-based device comprises: raw material cutting fractionating system, raw material of etherification refining system, main reaction system, reactive distillation system.
The cutting fractionating system and the raw material of etherification refining system of raw material of etherification be, the prerequisite of catalytic light gasoline etherification technology and basis must be made with extra care catalytic light gasoline, removes objectionable impuritiess such as basic nitrogen compound in the petroleum naphtha, metals ion.This utility model takes serial purification techniquess such as gas phase washing, refining with adsorbents, efficient coalescer dehydration to make basic nitrogen compound in raw material of etherification-catalytic light gasoline less than 1ppm aspect feed purification.Wherein the refining decreasing ratio to water-soluble objectionable impuritiess such as basic nitrogen compound, metals ions of washing is about 80%.
Sulfonic group effect in basic nitrogen compound and the sulfonic group strong-acid property cation exchange resin catalyst; Generate the Sulfonates compound; And catalyzer is lost activity, thus the work-ing life of catalyzer shortened, so before etherificate, must it be removed through pre-treatment; Reduce the influence of impurity to etherification reaction and catalyzer.
Summary of the invention
A kind of hydro carbons washing process for purification; Full cut catalytic gasoline becomes weight two components through the separation column cutting and separating; Cat head distilled petroleum naphtha directly mixes refining with de-salted water; It is soluble in water that basic nitrogen compound is separated from oil, then in the shunting return tank of top of the tower with gas, oil, water sepn, the sewage that is dissolved with nitride is discharged from the dehydration bag.
The present invention is applicable to that hydro carbons separation column-washings such as similar gasoline, liquefied gas make with extra care system; Adopt fractionation overhead product gas phase washing process; Mixing tank will be washed dexterously and fractionating tower equipment combines; Feed purification and fractionation unit operation are combined in the tower to be carried out, and has reduced gas, oil, water separation tank construction, has reduced floor space, has reduced construction investment, has simplified technology, has shortened flow process, and can guarantee to wash refining effect.
Catalytic gasoline etherificate technology; Be in the presence of acid resin catalyst; In the catalytic gasoline before 75 ℃ lighting end and methyl alcohol carry out etherification reaction; Make uncle's amylene, uncle's hexene and uncle's heptene in the catalytic gasoline generate corresponding TAME (TAME), methyl-tert hexyl ether (THxME), methyl-tert heptyl ether (THeME), thereby reduce the olefin(e) centent of gasoline.
The catalytic gasoline ether-based device cuts fractionating system, raw material of etherification refining system, main reaction system, reactive distillation system etc. by raw material and forms.
The present invention is the important component part of catalytic light gasoline ether-based device; Be the prerequisite and the basis of catalytic light gasoline etherification technology; Adopt petroleum naphtha gas phase method for washing; It is soluble in water that nitride separation in the oil is come out, and removes nitric wastewater at the separation column return tank, reaches the refining purpose that impurity is taken off in the raw material denitrogenation.
Description of drawings
Fig. 1 is catalytic light gasoline washing refining plant schema, is made up of raw material cutting fractionating system and raw material washing refining system, is the refining modern technique combination for one of fractionation, washing.
Among the figure: 1 is separation column; 2 is de-mineralized water; 3 is water, oil-gas mixer; 4 is condensate cooler; 5 are the fractionation return tank of top of the tower; 6 are fractionation cat head reflux pump; 7 for sending catalytic light gasoline outside; 8 are the fractionation bottom reboiler; 9 send pump outside for heavy constituent oil at the bottom of the separation column.
Embodiment
The present invention is made up of raw material cutting fractionating system and raw material washing refining system, is the refining modern technique combination for one of fractionation, washing, and feed purification and fractionation unit operation are combined in the tower to be carried out.
Specify embodiment of the present invention below in conjunction with accompanying drawing: cutting and separating is light constituent and heavy constituent in the full cut catalytic gasoline entering separation column 1; Fractionation cat head distilled light constituent and de-mineralized water 2 make its thorough mixing that nitride is soluble in water under the effect of mixing tank 3; Through condensate cooler 4 the gaseous state thing is liquefied; The condensation cooled mixed liquor gets into the separation that fractionation return tank of top of the tower 5 is accomplished gas, oil, water, and return tank 5 top non-condensable gases go the catalytic gas compressor assembly to reclaim; Nitric wastewater is got rid of by return tank 5 bottom water bags; Oil phase divides two-way in the return tank 5, and one the tunnel sends into the fractionation cat head through reflux pump 6 does backflow, and another road 7 gets into etherification reaction systems, and heat is provided by fractionation bottom reboiler 8 at the bottom of the separation column, and heavy constituent oil is sent pump 9 outside and extracted out and send outside at the bottom of the separation column at the bottom of separation column.
Claims (1)
1. a hydro carbons is washed process for purification; It is characterized in that: full cut catalytic gasoline becomes weight two components through the separation column cutting and separating; Cat head distilled petroleum naphtha directly mixes refining with de-salted water; It is soluble in water that basic nitrogen compound is separated from oil, then in the shunting return tank of top of the tower with gas, oil, water sepn, the sewage that is dissolved with nitride is discharged from the dehydration bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104071197A CN102492463A (en) | 2011-12-09 | 2011-12-09 | Hydrocarbon washing refining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104071197A CN102492463A (en) | 2011-12-09 | 2011-12-09 | Hydrocarbon washing refining method |
Publications (1)
| Publication Number | Publication Date |
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| CN102492463A true CN102492463A (en) | 2012-06-13 |
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| CN2011104071197A Pending CN102492463A (en) | 2011-12-09 | 2011-12-09 | Hydrocarbon washing refining method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194258A (en) * | 2013-04-19 | 2013-07-10 | 华东理工大学 | Method for prolonging operation period of circulation oil system on top of fractionation tower |
| CN107674702A (en) * | 2017-09-28 | 2018-02-09 | 宁夏宝塔化工中心实验室(有限公司) | A kind of catalytic light gasoline ether-based device prefractionation overhead washing, condensation cooling technique |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1177625A (en) * | 1996-09-26 | 1998-04-01 | 孙仁贵 | Method for production of number 90 gasoline by cracking gasoline |
| CN1198431A (en) * | 1997-05-07 | 1998-11-11 | 中国石化齐鲁石油化工公司 | Light hydrocarbon etherifying technology |
| CN1385498A (en) * | 2002-03-06 | 2002-12-18 | 南充炼油厂科学技术协会 | Method for converting straight-run gasoline into No.90 gasoline |
| CN1472284A (en) * | 2002-07-30 | 2004-02-04 | 中国石油化工股份有限公司 | Method for separating and refining etherification material from catalytic cracking gasoline |
| CN1583974A (en) * | 2003-08-20 | 2005-02-23 | 中国石油化工股份有限公司 | Method for decreasing sulfur content of distillate |
| US20060180502A1 (en) * | 2005-02-14 | 2006-08-17 | Catalytic Distillation Technologies | Process for treating cracked naphtha streams |
| CN101967391A (en) * | 2010-09-30 | 2011-02-09 | 西南石油大学 | Complex sulfurization and denitrification method for distillate |
-
2011
- 2011-12-09 CN CN2011104071197A patent/CN102492463A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1177625A (en) * | 1996-09-26 | 1998-04-01 | 孙仁贵 | Method for production of number 90 gasoline by cracking gasoline |
| CN1198431A (en) * | 1997-05-07 | 1998-11-11 | 中国石化齐鲁石油化工公司 | Light hydrocarbon etherifying technology |
| CN1385498A (en) * | 2002-03-06 | 2002-12-18 | 南充炼油厂科学技术协会 | Method for converting straight-run gasoline into No.90 gasoline |
| CN1472284A (en) * | 2002-07-30 | 2004-02-04 | 中国石油化工股份有限公司 | Method for separating and refining etherification material from catalytic cracking gasoline |
| CN1583974A (en) * | 2003-08-20 | 2005-02-23 | 中国石油化工股份有限公司 | Method for decreasing sulfur content of distillate |
| US20060180502A1 (en) * | 2005-02-14 | 2006-08-17 | Catalytic Distillation Technologies | Process for treating cracked naphtha streams |
| CN101967391A (en) * | 2010-09-30 | 2011-02-09 | 西南石油大学 | Complex sulfurization and denitrification method for distillate |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194258A (en) * | 2013-04-19 | 2013-07-10 | 华东理工大学 | Method for prolonging operation period of circulation oil system on top of fractionation tower |
| CN103194258B (en) * | 2013-04-19 | 2014-10-22 | 华东理工大学 | Method for prolonging operation period of circulation oil system on top of fractionation tower |
| CN107674702A (en) * | 2017-09-28 | 2018-02-09 | 宁夏宝塔化工中心实验室(有限公司) | A kind of catalytic light gasoline ether-based device prefractionation overhead washing, condensation cooling technique |
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Application publication date: 20120613 |