[특허]Enhanced corrosion protection by use of friction reducers in conjuction with corrosion inhibitors

Enhanced corrosion protection by use of friction reducers in conjuction with corrosion inhibitors 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C09K-003/00
출원번호	US-0958799 (1997-10-27)
발명자 / 주소	Johnson John D. Fu Shi-Liang Bluth Matthew J. Marble Robert A
출원인 / 주소	Nalco/Exxon Energy Chemicals, L.P.
대리인 / 주소	Martin
인용정보	피인용 횟수 : 28 인용 특허 : 20

초록 ▼

A method of inhibiting corrosion of iron and steel alloys in contact with oil-in-brine emulsions is claimed. The method comprises treating the oil-in-brine emulsions with an effective amount of a water soluble polymer having an average molecular weight of at least one million and an effective amount

대표청구항 ▼

[ We claim:] [1.] A method for preventing corrosion of the metallic surfaces of a horizontal pipeline in contact with an oil-in-brine emulsion of a crude oil being transported under turbulent flow conditions which produce friction comprising continuously adding to the oil-in brine emulsion flowing through the pipelineA. an effective turbulence-reducing amount of a water-soluble polymer having an average molecular weight greater than one million andB. an effective corrosion-inhibiting amount of a nitrogen-containing corrosion inhibitor selected from the group consisting of:quaternary ammonium salts of the following structure: [ STR 5 ] where R, R.sub.1, R.sub.2 and R.sub.3 are moieties containing one to twenty-two carbon atoms selected from the group consisting of alkyl, aryl and alkylaryl groups and X is an anion selected from the group consisting of chlorine, bromine and iodine;alkyl-substituted nitrogen-containing heterocyclics of the following structure: [ STR 6 ] where R is an alkyl moiety containing one to twenty-two carbon atoms and R.sub.1 is a moiety containing one to twenty-two carbon atoms selected from the group consisting of alkyl and alkylaryl and X is an anion selected from the group consisting of chlorine, bromine and iodine;amides of the following structure: [ STR 7 ] wherein R is a moiety containing eight to twenty carbon atoms selected from the group consisting of saturated and unsaturated alkyls and R.sub.1 is an alkyl polyamine carboxylic acid salt moiety having one to twenty carbon atoms;and imidazolines of the following structure: [ STR 8 ] wherein R is a moiety selected from the group consisting of benzyl, methyl and carboxylic acid salts, R.sub.1 is an alkyl moiety containing one to twenty-two carbon atoms and R.sub.2 is selected from the group consisting of alkyl polyamines having one to twenty-two carbon atoms, hydrogen and alcohols having one to twenty carbon atoms and X is an anion selected from the group consisting of chlorine, bromine, iodine and methyl sulfate.

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Enhanced corrosion protection by use of friction reducers in conjuction with corrosion inhibitors 원문보기

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