Classifications

• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
  • C10L1/00—Liquid carbonaceous fuels
  • C10L1/10—Liquid carbonaceous fuels containing additives
  • C10L1/14—Organic compounds
  • C10L1/22—Organic compounds containing nitrogen
  • C10L1/222—Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
  • C10L1/00—Liquid carbonaceous fuels
  • C10L1/10—Liquid carbonaceous fuels containing additives
  • C10L1/14—Organic compounds
  • C10L1/22—Organic compounds containing nitrogen
  • C10L1/222—Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond
  • C10L1/2222—(cyclo)aliphatic amines; polyamines (no macromolecular substituent 30C); quaternair ammonium compounds; carbamates
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
  • C10L1/00—Liquid carbonaceous fuels
  • C10L1/10—Liquid carbonaceous fuels containing additives
  • C10L1/14—Organic compounds
  • C10L1/22—Organic compounds containing nitrogen
  • C10L1/222—Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond
  • C10L1/2222—(cyclo)aliphatic amines; polyamines (no macromolecular substituent 30C); quaternair ammonium compounds; carbamates
  • C10L1/2225—(cyclo)aliphatic amines; polyamines (no macromolecular substituent 30C); quaternair ammonium compounds; carbamates hydroxy containing

Definitions

• This invention relates to a corrosion inhibitor composition for fuel oils consisting of a mixture of:
• the invention also relates to fuel oils containing from 50 to 1000 parts per million of the aforesaid corrosion inhibitor composition.
• organic nitrogen compounds such as amines
• amines have already been suggested, in particular long chain amines as well as alkanolamines, amides and their salts, also fatty acids or their salts.
• these products guarantee good protection as long as the corrosion relates merely to an attack by condensation moisture or to corrosion due to salt-free ground Water.
• salt-containing, in particular, chloride-containing solutions the previously known fuel oil additives offer a sufiicient protection only when disproportionately higher, frequently no longer economical, concentrations are employed.
• the object of the invention is to discover corrosion preventatives, in particular, corrosion inhibiting additives for fuel oils which guarantee, even in the presence of saltcontaining, especially chloride-containing water, an especially pronounced protection already with the use of small amounts of the additives.
• Another object of the invention is the obtention of a corrosion inhibitor composition for fuel oils consisting of a mixture of:
• said salts being present in said mixture in a ratio of 1:9 to 9:1 parts by weight.
• a further object of the invention is the obtention of a corrosion preventative fuel oil containing from to 1000 parts per million of the aforesaid corrosion inhibitor composition.
• said salts being present in said mixture in a ratio of 1 to 9 to 9 to 1.
• salt A carboxylic acids with 8 to 10 carbon atoms were used for the salt formation
• carboxylic acids having from 6 to 10 carbon atoms as salt B can also be observed as an improvement compared with the shorter or longer chain acids.
• the amine components of the salt B those having from 4 to 12 carbon atoms have the most favorable effect on the corrosion-preventing behavior.
• a further influence of the effectiveness of the salt mixture is possible by varying the proportions of the salts A and B in the total mixture. Here it became evident that the best results are obtained when the ratio of salt A to salt B fluctuates within the limits of 3:7 to 7:3 parts by weight.
• compositions for fuel oils consist of a mixture of:
• said salts being present in said mixture in a ratio of 3:7 to 7:3 parts by weight.
• Suitable as acid components of the salt A are aliphatic carboxylic acids of natural origin, such as caproic acid, enanthic acid, caprylic acid, pelargonic acid, capric acid, undecanoic acid, lauric acid, and undecylenoic acid, and also synthetic carboxylic acids, as obtained by the paraffin oxidation or by addition of carbon monoxide and water to olefins.
• the above acids are alkanoic 3 acids and alkenoic aclds having 6 to 12 carbon atoms. The best efiectiveness may be attributed to the salts of caprylic, pelargonic and capric acids, of which caprylic acid (noctanoic acid) is most outstanding.
• the alkylamine component substituted by hydroxyl 5 amine-caprylate has been found the most favorable comgroups of the salt A can consist of monoethanolamine, dibination of all of the possibilities, absolutely suitable and ethanolamine, triethanolamine, propanolamine, isoprofurnishing very satisfoctory results.
• this panolamine, triisopropanolamine, ethyleneoxide addition combination is the most effective when the mixture comproducts of amines or alk'anolamines, as for example, ponents are used at aratio of 1:1.
• concentrations for use of the corrosion inhibitor salt ethylene oxide units, 2-ethyl-hexylamine-l-6 ethylene oxmixtures of the invention, required for a sufiicient proide units, octylamine+8 ethylene oxide units, dodecyltection in fuel oil lies between 50 and 1000 p.p.m., based amine- ⁇ -12 ethylene oxide units, triethanolamine+2 on fuel oil.
• R1--l IRa examples wherein R R and R are members selected from the For the investigation of the effectiveness of the corrogroup consisting of (a) hydrogen, (b) alkyl having from 1 sion preventative compositions, rust-free, polished and dcto 12 carbon atoms (0) hydroxyalkyl having from 2 to 6 greased steel plates of the quality ST 37-2 (-DIN 17.100), carbon atoms, and (d) -(CH CH -O:),,H, where n 1s 2 mm. thick, 20 mm. wide and 100 mm. long, were placed an integer of from 2 to 20, with the prov1so that at least in a standing cylinder of about 25 mm.
• R R and R is selected from members (c) and mm. height. Then ml. of a pure unmixed fuel oil, to (d) above. Triethanolamine was found to be the most sultwhich various corrosion inhibitor salt mixtures had been able component. added, and 3 ml. of an aqueous 0.3% sodium chloride so- AS d components of the Salt 1 h y Valerie lution were added. The steel plates were submerged about acid as well as those acids already indicated as acid com- 30 6 mm. in the aqueous solution and were covered with oil ponents f the salts A can be used, of which ap a gi, up to a height of mm.
• An aqueous sodium chloride corrosion inhibitor composition for fuel oils consisting of a mixture of (A) salts of aliphatic carboxylic acids containing from 8 to 10 carbon atoms selected from the group ness of the fuel oil additives of the invention, a quanticonsisting of alkanoic acids and alkenoic acids, with tative test was conducted according to the specifications alkylamines containing hydroxyl groups of the given by the Eidrischen Metallpriifungs und formula feelingssweg (Federal Metal Testing and Research R1 Institute) (EMPA-Publications 2/ 1964).
• a square, rust-free, polished, degreased steel plate (ST RPN-R DIN Of known weight and 2 mm. thickwherein R R and R are members selected from ness with a length of 20 mm, was placed in a 50 ml. the group consisting of (a) hydrogen, (b) alkyl beaker. ml. of fuel oil was poured over the steel plate, having from 1 to 12 carbon atoms, (c) hydroxyalkyl and while vigorously stirring, 0.23 ml. of water or 0.23 having from 2 to 6 carbon atoms, and (d) ml. of sodium chloride solutions having a concentration 40 varying from 0.3% to 3% were added.
• n is an integer from 2 to 20, with the proviso produced a corresponding corrosion.
• the loss of iron was consisting of alkanoic acids and alkenoic acids, with ascertained from the difference and converted into gram monoalkylamines having from 4 to 12 carbon atoms, of loss of iron/rn. of surface.
• the values thus obtained with the proviso that the total number of carbon are reported in the following table. atoms in said salt is more than 10;
• the advantage obtainable according to the invention consists in that with even low concentrations of the indicated salt mixtures in fuel oil, a complete protection can be obtained for the storage tank against corrosion due to salt-containing water.
• the salt-containing waters have until now caused the greatest difficulties with respect to the corrosion preventative techsaid salts being present in said mixture in a ratio of 3:7 to 7:3 parts by weight.
• aqueous sodium chloride corrosion inhibitor composition for fuel oils of claim 1 wherein the carboxylic acid component of the salt A is an alkanoic acid having 8 to 10 carbon atoms.
• aqueous sodium chloride corrosion inhibitor composition for fuel oils of claim 1 wherein the carboxylic acid component of the salt B is an alkanoic acid having 6 to 10 carbon atoms.
• aqueous sodium chloride corrosion inhibitor composition for fuel oils of claim 1 wherein the alkylamine containing hydroxyl group component of salt A is triethanolamine.
• aqueous sodium chloride corrosion inhibitor composition for fuel oils of claim 1 wherein the monoalkylamine component of salt B is dodecylamine.
• salt A is triethanolamine-caprylate
• salt B is dodecylamine-caprylate and said salts A and B are present in a ratio of 1 to 1 parts by weight.

Landscapes

• 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)
• Preventing Corrosion Or Incrustation Of Metals (AREA)
• Liquid Carbonaceous Fuels (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=7160378

Family Applications (1)

Country Status (6)

Cited By (8)

Families Citing this family (2)

Citations (8)

• 1966
  • 1966-04-05 DE DE19661521777 patent/DE1521777A1/de active Pending
• 1967
  • 1967-03-08 NL NL6703634A patent/NL6703634A/xx unknown
  • 1967-03-14 US US622922A patent/US3429673A/en not_active Expired - Lifetime
  • 1967-03-31 BE BE696437D patent/BE696437A/xx unknown
  • 1967-04-03 FR FR101229A patent/FR1517433A/fr not_active Expired
  • 1967-04-04 GB GB15254/67A patent/GB1140019A/en not_active Expired

Patent Citations (8)

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