WO2010136738A2 - Procédé de réduction de l'acidité naphténique de charges pétrolières et son utilisation - Google Patents
Procédé de réduction de l'acidité naphténique de charges pétrolières et son utilisation Download PDFInfo
- Publication number
- WO2010136738A2 WO2010136738A2 PCT/FR2010/051037 FR2010051037W WO2010136738A2 WO 2010136738 A2 WO2010136738 A2 WO 2010136738A2 FR 2010051037 W FR2010051037 W FR 2010051037W WO 2010136738 A2 WO2010136738 A2 WO 2010136738A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- petroleum
- petroleum feedstock
- contacting
- cao
- compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G19/00—Refining hydrocarbon oils in the absence of hydrogen, by alkaline treatment
- C10G19/073—Refining hydrocarbon oils in the absence of hydrogen, by alkaline treatment with solid alkaline material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1037—Hydrocarbon fractions
- C10G2300/1048—Middle distillates
- C10G2300/1055—Diesel having a boiling range of about 230 - 330 °C
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/107—Atmospheric residues having a boiling point of at least about 538 °C
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1077—Vacuum residues
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/201—Impurities
- C10G2300/202—Heteroatoms content, i.e. S, N, O, P
- C10G2300/203—Naphthenic acids, TAN
Definitions
- the present invention relates to a method for reducing the naphthenic acidity of petroleum feedstocks, and its use. More specifically, it relates to a process in which the naphthenic acidity is reduced by contacting said petroleum feedstock with a compound chosen from oxides, hydroxides or alkoxides of an alkaline earth metal HA, at a lower temperature or equal to 150 ° C.
- the so-called “acidic" crude oils i.e. having high acid contents, are mainly those containing naphthenic acids.
- heavy crude oils whose production is in permanent growth and which are most often characterized by a high viscosity and a high naphthenic acidity.
- naphthenic acids is a generic term for a mixture of organic acids present in petroleum feeds.
- This crude oil acidity is typically measured by the Total Acid Number (TAN), which is measured according to ASTM D664 by potentiometry and D974 by colorimetry. Acidity can also be measured by infrared spectrometry; In this case, TAN-IR is used, the measured acidity then corresponding only to the contribution of the carboxylic acid function -COOH. A discount is generally applied to crude oils according to the TAN index: the value of this acidity depends on the price of crude oil.
- TAN Total Acid Number
- Patent EP 0 935 644 proposes, in fact, a process for reducing the naphthenic acidity of petroleum feedstocks, in which an oxide, a hydroxide or an hydroxide hydrate of metals of group HA is added, in the presence of 0, 2% to 7% by weight of water, this water being necessary for the added base to be effective in neutralizing the acid. Even if some of the naphthenic acids disappear, there appear naphthenates which are likely to reform naphthenic acids later, for example in the atmospheric distillation column, in which case we will only move the problem instead of solving it.
- the present invention aims to overcome these disadvantages by proposing a process for reducing the naphthenic acidity of a petroleum feedstock having a neutralization number of 0.5 to 10 mg of KOH / g and a water content of less than 0.2. % by weight, said method comprising contacting the petroleum feedstock with a compound selected from the oxides, hydroxides or alkoxides of an alkaline earth metal of the HA group, the contacting being carried out at a lower temperature or equal to 150 0 C, said compound being then separated from the petroleum feedstock.
- the Applicant has observed that the separation of the oxide, hydroxide or hydrate of metal hydroxide from the above-mentioned HA group, after it has come into contact with the petroleum feedstock, makes it possible to reduce the rate of poisoning of the catalysts used during the refining and therefore extend the operating life of the installations without maintenance stop.
- the contacting step comprises sufficiently mixing the alkaline earth metal compound of the HA group with the petroleum feed so as to obtain a homogeneous mixture.
- the process according to the invention makes it possible to treat a petroleum feed that is free of water.
- the step of contacting the process according to the invention can be carried out at temperatures of less than or equal to 150 ° C., preferably less than or equal to 100 ° C., more preferably less than or equal to 90 ° C. C or 70 ° C.
- the process according to the invention will advantageously be implemented before the desalting of the petroleum feed, in order to take advantage of the heating achieved at the desalting inlet.
- the desalting being the preliminary step to the distillation of crude oil
- the implementation of the process of the invention before desalting avoids corrosion problems in the distillation units.
- the contacting step can also be carried out at ambient temperature, thus making it possible to save energy.
- the contacting step of the process according to the invention is carried out for a period of not more than 10 hours, preferably not more than 30 minutes, and sufficient for the mixture of petroleum feedstock and alkaline earth metal compound of the group HA is homogeneous.
- This homogenization of the mixture can be obtained in a relatively short time depending on the mixed quantities.
- the amount of HA-containing metal-containing compound used per mole of acid functionality in the petroleum feedstock is selected in a range of 0.025 mole to 500 moles.
- the compound containing a metal of the HA group may be chosen from oxides, hydroxides and hydrates of hydroxides of calcium (Ca), magnesium (Mg) and Barium (Ba), preferably calcium oxide CaO or magnesium oxide MgO.
- the HA group metal-containing compound is added as a solid material, preferably in the form of a powder or crushed grains.
- the oil load may be selected from crude oils, crude oils diluted with a solvent or a light cut resulting from the distillation of a crude oil, atmospheric residues and / or vacuum residues from crude distillations, diesel cuts. and / or distillates from the direct distillation of crude oil or various conversion processes such as catalytic cracking and visbreaking.
- the contacting step of the process according to the invention can be carried out in at least one fixed-bed reactor, preferably in at least two fixed-bed reactors.
- the contacting step is performed in a charging tank, for example equipped with heating means.
- Loading tanks often equipped with stirring means, or even heating means, for example for heating to 45 ° C., are common in refineries, so that the process according to the invention can be implemented. in existing bins.
- the compound of a metal of the HA group is a pretreated oxide, for example by calcination, preferably from 800 to 1000 ° C. for 4 to 72 hours.
- Such pretreatment significantly improves the activity of the metal-containing compound.
- a subsequent step of separating the compound containing the alkaline earth metal, for example by filtration, is carried out.
- Such a separation step makes it possible to recover the metal-based compound of the HA group, and thus to avoid poisoning by metals of the catalysts used in the catalytic processes of the refining.
- the alkaline earth metal containing compound can be separated by a method selected from filtration, centrifugation, distillation, decantation and liquid / liquid extraction.
- the invention relates to a process for reducing the naphthenic acidity of a petroleum filler having a neutralization number of 0.5 to 10 mg of KOH / g and a water content of less than 0.2% by weight. weight, said method comprising a step of contacting the petroleum feed with CaO, the contacting being carried out at a temperature of less than or equal to 60 ° C.
- CaO is the best candidate for a deacidification of a petroleum charge at room temperature
- MgO which is a metal oxide with properties very close to CaO, does not provide satisfactory results.
- the invention relates to a process for reducing the naphthenic acidity of a petroleum feedstock having a neutralization number of 0.5 to 10 mg KOH / g and a water content of less than 0, 2% by weight, said process comprising a contacting step of the petroleum feedstock with CaO in crushed form, at a temperature between the pour point of the petroleum feedstock and 300 0 C. in fact, it has been observed that the charge was deacidified even when the nature of the CaO (crushed, so low surface area) seemed unfavorable to the reaction.
- the CaO is then advantageously separated from the petroleum feed, in order to avoid catalyst bed poisoning problems or to increase the pressure difference between the inlet and the outlet of the reactors ("Delta P").
- the pour point of the petroleum charge may be determined by methods known to those skilled in the art. For example, a manual tilt method according to ASTM D97 (for petroleum products) or ASTM D5853 (for crude oils) or automated according to ASTM D 5950 may be used. rotational method according to ASTM D5985, or a method using pressure differential method according to ASTM D7346.
- the charge does not seem destabilized by CaO treatment under the operating conditions used. Precipitation of asphaltenes is not observed. This makes the charge usable for blending with other fillers such as acidic or nonacid, heavy or light crudes. Such a mixture can be carried out before desalting.
- the diesel fuel cut is acidified until a TAN-IR equal to approximately 4 is obtained, by adding 3-cyclohexane propanoic acid, of which the boiling temperature is 275 ° C. This acid was chosen because of the similarities it has with the naphthenic acids found in petroleum cuts.
- the petroleum feed is mixed with calcium oxide CaO, which can be calcined or not. Then, it is stirred for 15 minutes until homogenization, then the mixture is filtered on filter paper or on a frit to remove the calcium oxide. Finally, Infrared (IR) analysis is performed to calculate the value of the TAN-IR.
- CaO calcium oxide
- IR Infrared
- the acidity of the charges is monitored by infrared spectrometry (TAN-IR).
- TAN-IR infrared spectrometry
- Thermo Nicolet FTIR infrared spectrometer 380 was used.
- the content of carboxylic acid type compounds has been determined from the infrared spectra recorded by measuring the area of the peak relative to the -COOH acid function and then weighting it by the density of the product studied as well as by the characteristics of the cell used.
- the initial TAN-IR corresponds to the measurement of the starting product, before addition of CaO, while the final TAN-IR corresponds to the measurement of the mixture after filtration.
- the inaccuracy on the measurement of TAN-IR is estimated at about 10%.
- the petroleum feed used is the acidified gas oil fraction, and the mixture is carried out at room temperature.
- the measurements of TAN IR are grouped in the following table 3.
- the oil load used is the Dalia crude oil alone or diluted with the diesel fuel, the properties of which are summarized in Tables 1 and 2.
- the mixture was carried out at ambient temperature and at 50 ° C.
- the Dalia crude to which was added 10% by weight of non-calcined CaO was tested with an addition of 6% by weight of water based on the weight of crude only.
- the infrared spectrum of the filtered mixture was recorded after filtration and is reported in the single figure. This figure also shows the infrared spectrum of raw Dalia crude and crude mixture Dalia - 10% by weight of CaO after filtration, but free of water.
- graph 2 corresponds to the raw Dalia + 10% weight CaO - free of water
- graph 3 the graph in solid line (graph 3) corresponds to the raw Dalia alone.
- 3-Cyclohexylpropanoic acid (which is a naphthenic acid) is added to diesel fuel from a DHC unit (Distilate
- 3-Cyclohexylpropanoic acid is added to diesel fuel from a DHC unit so that the TAN is equal to 4.
- CaO or MgO is added to the mixture according to the method described above for carrying out the tests. The experiment is carried out at room temperature. The results are shown in Table 6 below.
- MgO is unsuitable for deacidification at room temperature of a crude oil, under the operating conditions used. CaO allows a large and fast deacidification.
- an initial TAN-IR crude daria feedstock 0.94 is 52% deacidified in 15 minutes in the presence of CaO (test 3), while the same feedstock treated under identical conditions in the presence of MgO at instead of CaO is only deacidified by 2% (test4)
- Dalia crude is brought into contact with CaO in various forms.
- the contact temperature, the proportion of CaO and its particle size as well as the dilution of Dalia with diesel fuel are among the variables measured. The results are shown in Table 7 below.
- the ambient temperature can usually vary between -10 and + 50 ° C. In the place where the measurements were made, it is generally between +5 and +40 ° C., with an average temperature of between +15 and +25 ° C.
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP10728843A EP2435535A2 (fr) | 2009-05-29 | 2010-05-28 | Procédé de réduction de l'acidité naphténique de charges pétrolières et son utilisation |
| US13/322,798 US9133399B2 (en) | 2009-05-29 | 2010-05-28 | Method for reducing the naphthenic acidity of petroleum feedstocks, and use thereof |
| CA2763534A CA2763534A1 (fr) | 2009-05-29 | 2010-05-28 | Procede de reduction de l'acidite naphtenique de charges petrolieres et son utilisation |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0953568A FR2946055B1 (fr) | 2009-05-29 | 2009-05-29 | Procede de reduction de l'acidite naphtenique de charges petrolieres et son utilisation |
| FR0953568 | 2009-05-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2010136738A2 true WO2010136738A2 (fr) | 2010-12-02 |
| WO2010136738A3 WO2010136738A3 (fr) | 2011-02-24 |
Family
ID=41479044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2010/051037 Ceased WO2010136738A2 (fr) | 2009-05-29 | 2010-05-28 | Procédé de réduction de l'acidité naphténique de charges pétrolières et son utilisation |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9133399B2 (fr) |
| EP (1) | EP2435535A2 (fr) |
| CA (1) | CA2763534A1 (fr) |
| FR (1) | FR2946055B1 (fr) |
| WO (1) | WO2010136738A2 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102089708B1 (ko) * | 2015-06-10 | 2020-03-16 | 사우디 아라비안 오일 컴퍼니 | 레이저 유도 자외선 형광 분광법을 사용한 원유의 특징화 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB496779A (en) | 1937-01-04 | 1938-12-06 | Bataafsche Petroleum | A process for removing naphthenic acids from mineral lubricating oils or lubricating oil fractions |
| EP0607640A1 (fr) | 1990-12-21 | 1994-07-27 | Exxon Chemical Patents Inc. | Inhibiteurs de corrosion par l'acide naphténique |
| EP0924285A2 (fr) | 1997-12-17 | 1999-06-23 | Exxon Research And Engineering Company | Méthode de réduction de l'acidité d'huile brute et de ses fractions |
| EP0935644A1 (fr) | 1995-08-25 | 1999-08-18 | Exxon Research And Engineering Company | Procede de reduction de la teneur en acides et du pouvoir corrosif petroles bruts |
| WO2006014486A1 (fr) | 2004-07-07 | 2006-02-09 | California Institute Of Technology | Procédé pour enrichir le pétrole à l’aide d’oxydes métalliques |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1921116A (en) * | 1930-04-25 | 1933-08-08 | California First Nat Bank | Process of neutralization |
| US4033860A (en) * | 1975-09-10 | 1977-07-05 | Uop Inc. | Mercaptan conversion process |
| US6679987B1 (en) * | 1995-08-25 | 2004-01-20 | Exxonmobil Research And Engineering Company | Process for decreasing the acid content and corrosivity of crudes |
| US5904839A (en) * | 1997-06-06 | 1999-05-18 | Exxon Research And Engineering Co. | Process for upgrading heavy oil using lime |
| GB9912842D0 (en) * | 1999-06-02 | 1999-08-04 | Bp Exploration Operating | Process for reducing the acidity of oil |
-
2009
- 2009-05-29 FR FR0953568A patent/FR2946055B1/fr not_active Expired - Fee Related
-
2010
- 2010-05-28 EP EP10728843A patent/EP2435535A2/fr not_active Withdrawn
- 2010-05-28 US US13/322,798 patent/US9133399B2/en not_active Expired - Fee Related
- 2010-05-28 WO PCT/FR2010/051037 patent/WO2010136738A2/fr not_active Ceased
- 2010-05-28 CA CA2763534A patent/CA2763534A1/fr not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB496779A (en) | 1937-01-04 | 1938-12-06 | Bataafsche Petroleum | A process for removing naphthenic acids from mineral lubricating oils or lubricating oil fractions |
| EP0607640A1 (fr) | 1990-12-21 | 1994-07-27 | Exxon Chemical Patents Inc. | Inhibiteurs de corrosion par l'acide naphténique |
| EP0935644A1 (fr) | 1995-08-25 | 1999-08-18 | Exxon Research And Engineering Company | Procede de reduction de la teneur en acides et du pouvoir corrosif petroles bruts |
| EP0924285A2 (fr) | 1997-12-17 | 1999-06-23 | Exxon Research And Engineering Company | Méthode de réduction de l'acidité d'huile brute et de ses fractions |
| WO2006014486A1 (fr) | 2004-07-07 | 2006-02-09 | California Institute Of Technology | Procédé pour enrichir le pétrole à l’aide d’oxydes métalliques |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2763534A1 (fr) | 2010-12-02 |
| FR2946055A1 (fr) | 2010-12-03 |
| FR2946055B1 (fr) | 2012-08-03 |
| EP2435535A2 (fr) | 2012-04-04 |
| WO2010136738A3 (fr) | 2011-02-24 |
| US20120132568A1 (en) | 2012-05-31 |
| US9133399B2 (en) | 2015-09-15 |
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