Classifications

• • C—CHEMISTRY; METALLURGY
  • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
  • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
  • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
  • C23F11/04—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly acid liquids
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
  • B01J19/02—Apparatus characterised by being constructed of material selected for its chemically-resistant properties
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
  • B01J2219/02—Apparatus characterised by their chemically-resistant properties
  • B01J2219/025—Apparatus characterised by their chemically-resistant properties characterised by the construction materials of the reactor vessel proper
  • B01J2219/0277—Metal based
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S507/00—Earth boring, well treating, and oil field chemistry
  • Y10S507/933—Acidizing or formation destroying
  • Y10S507/934—Acidizing or formation destroying with inhibitor

Definitions

• n is an integer from 3 to X is selected from the group consisting of bromine and iodine; and Y is a glycol having 3 to 10 carbon atoms.
• the composition may contain a terpene alcohol, an aliphatic alcohol and a dispersing agent such as an ethoxylated oleate and the like.
• the present invention is directed to corrosion inhibition of corrosive acids. More particularly, the invention is concerned with inhibition of corrosive acid in contact with ferrous metals. In its more specific aspects, the invention is concerned with a method and composition for inhibiting corrosion of ferrous metals by corrosive acids in which the composition comprises at least 2 acetylenic alcohols, a quinoline quaternary compound and an organic fluoride having the structural formula:
• n is an integer from 3 to 10;
• X is selected from the group consisting of bromine and iodine; and
• Y is a glycol having 3 to 10 carbon atoms or is an ethoxylated alcohol having 1 to 10 moles of ethylene or propylene oxide.
• perfluoroalkylimidazolines as corrosion inhibitors as such or as the fatty acid salts has also been taught in hydrocarbon media.
• a particular organic fluoride, at least 2 acetylenic alcohols and quinoline quaternary compounds such that the combination is more effective as a corrosion inhibitor than any of its components has not been taught as a 3,658,720 Patented Apr. 25, 1972 "ice corrosion inhibitor for corrosive acids in contact 'with ferrous metals.
• the present invention may be briefly described and summarized as involving a corrosion inhibitor composition comprising effective amounts of at least 2 acetylenic alcohols, a quinoline quaternary compound, and an organic fluoride having the structural formula:
• n is an integer from 3 to 10;
• X is selected from the group consisting of bromine and iodine; and
• Y is a glycol having 3 to 10 carbon atoms or is an ethoxylated alcohol having 1 to 10 moles of ethylene or propylene oxide.
• the composition may contain a terpene alcohol such as pine oil, an aliphatic alcohol, such as isopropyl alcohol, and a dispersing agent such as an ethoxylated oleate.
• a terpene alcohol such as pine oil
• an aliphatic alcohol such as isopropyl alcohol
• a dispersing agent such as an ethoxylated oleate.
• the invention also may be summarized as a method of inhibiting the corrosivity of corrosive acids in contact with ferrous metals, such as steel, by adding to the corrosive acid an effective amount of the aforementioned composition.
• acetylenic alcohols employed in the present invention may suitably include ethyl octynol, propargyl alcohol, and other acetylenic alcohols having the structural formula:
• R is selected from the group consisting of CH, and H and R is selected from the group consisting of H, alkyl groups having 1 to 18 carbon atoms, mono-cyclic aryl groups, naphthalyl, phenyl, and alkyl substituted phenyls having 1 to 10 carbon atoms in the alkyl substituent.
• alkyl groups having 1 to 18 carbon atoms include: methyl butynol, methyl pentynol, hexanol, ethyl octynol, propargyl alcohol, benzyl butynol, naphthalyl butynol, and the like.
• the quinoline quaternary compounds may be illustrated by alkyl pyridine-methyl chloride quaternary, alkyl pyridine-benzyl chloride quaternary, quinoline-benzyl chloride quaternary, isoquinoline-benzyl chloride quaternary, thioalkyl pyridine quaternaries, thioquinoline quaternaries, benzoquinoline quaternaries, thiobenzoquinoline quaternaries, imidazole quaternaries, pyrimidine quaternaries, carbazole quaternaries, and the like.
• the organic fluoride may be a compound having the structure:
• the glycol radical may be derived from the following glycols: ethylene glycol, propylene glycols, other diols, t riols.
• the ethoxylated alcohol may have 1 to moles of ethylene or propylene oxide.
• the iodine molecule may be replaced by bromine to form similar bromides rather than the iodides.
• this organic fluoride is known to the market as Fluorad FC-134. Analysis of this material shows that it has the above structural formula and the empirical formula:
• the terpene alcohol may be pine oil, but other terpene alcohols such as alpha, beta and gamma terpineols, borneol, and the like may be used.
• An aliphatic alcohol may also be employed in the composition as illustrated by methyl, ethyl, propyl, isopropyl, butyl, pentyl, hexyl, heptyl, octyl and the higher liquid members of these aliphatic alcohols.
• an ethoxylated oleate such as ethoxyllated sorbitol hexaoleate and ethoxylated polyol oleate may be used as a dispersing agent.
• ethoxylate doleates, tall oils, and other fatty acids may be used as dispersing agents. In some cases these compounds also act as solubilizing agents as well as dispersing agents.
• Wt. percent 1st acetylenic alcohol About to about 25. 2nd acetylenic alcohol About 5 to about 10. Quinoline quaternary About 30 to about 50.
• Organic fluoride About 0.05 to about 1.0.
• Terpcne alcohol About 15 to about 35.
• Aliphatic alcohol About 2 to about 6.
• Ethoxylated oleate or solubilizing agent About 0.25 to about 1.0.
• the first acetylenic alcohol may have a higher molecular weight than the second acetylenic alcohol and is used in greater amounts as shown above and in the following embodiments and modes.
• the essential components of the present invention are the 2 acetylenic alcohols, the quaternary compound and the organic fluoride all of which cooperate to reduce the corrosivity of corrosive acids.
• the terpene alcohol serves as a coupling agent and -film forming agent while the aliphatic alcohol performs the function of a solvent.
• the ethoxylated oleate or other dispersing agent disperses and/or solubilizes the other components of the composition.
• Formulations (l) and (2) were then added to a mineral acid in contact with various types of steel under the following conditions with the corrosion rates indicated:
• FC-134 fluoride which contained iodine is the only one of the fluorides in Table VIII that showed any effectiveness as a corrosion inhibitor.
• the bromine containing fluoride may behave in a similar fashion.
• compositions of the present invention are unobviously better than the components thereof and, therefore, the invention may be quite valuable in combatting corrosion of corrosive acids such as sulfuric, nitric, hydrochloric, carbonic acid, acetic acid, other organic acids, and the like against ferrous metals.
• corrosive acids such as sulfuric, nitric, hydrochloric, carbonic acid, acetic acid, other organic acids, and the like against ferrous metals.
• the invention may be used in oil and gas fields and well environments since acid is used in acidizing and preventing scale formation by injection into Wells. It may also be used in other acid environments such as in acids used in cleaning ferrous metal equipment such as oil refinery equipment as illustrated by heat exchangers of deposited scale, acid soluble salts, and the like.
• R is selected from the group consisting of CH and H and R is selected from the group consisting of H, alkyl groups having 1 to 18 carbon atoms, mono-cyclic aryl groups, naphthalyl; phenyl, and alkyl substituted phenyls having 1 to 10 carbon atoms in the alkyl substituent;
• composition in accordance with claim 1 in which the acetylenic alcohols are ethyl octynol and propargyl alcohol.
• composition in accordance with claim 1 containing an effective amount of a terpene alcohol.
• composition in accordance with claim 3 in which the terpene alcohol is pine oil.
• composition in accordance with claim 1 containing an effective amount of an alkanol.
• composition in accordance with claim 1 containing a dispersing amount of an ethoxylated oleate.
• composition in accordance with claim 7 in which the oleate is ethoxylated sorbitol oleate.
• composition in accordance with claim 7 in which the oleate is ethoxylated polyol oleate.
• composition in accordance with claim 1 comprising:
• acetylenic alcohols are ethyl octynol and propargyl alcohol, and the terpene alcohol is pine oil.
• a composition in accordance with claim 9 comprising about 2% to about 6% by wt. of an alkanol.
• a method for inhibiting the corrosivity of a corrosive hydrochloric acid in contact with a ferrous met-a1 which comprises adding to said corrosive acid an inhibiting amount of the composition of claim 1.

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Mechanical Engineering (AREA)
• Metallurgy (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Preventing Corrosion Or Incrustation Of Metals (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=25367048

Family Applications (1)

Country Status (5)

Cited By (16)

Families Citing this family (3)

• 1969
  • 1969-11-12 US US876126A patent/US3658720A/en not_active Expired - Lifetime
• 1970
  • 1970-10-21 GB GB5000470A patent/GB1322548A/en not_active Expired
  • 1970-10-28 NL NLAANVRAGE7015796,A patent/NL170161C/nl not_active IP Right Cessation
  • 1970-10-28 CA CA096832A patent/CA936677A/en not_active Expired
  • 1970-11-10 NO NO4289/70A patent/NO131085C/no unknown

Also Published As

Similar Documents