Quinoline quaternary ammonium salt compound and its preparation method and application

Abstract

The invention relates to the field of water treatment agents, in particular to a quinoline quaternary ammonium salt compound and a preparation method and application thereof. The quinoline quaternaryammonium salt compound is a compound represented by a formula (1). The quinoline quaternary ammonium salt compound has good corrosion inhibition and bacteriostasis functions, and can have excellent corrosion inhibition performance and good bactericidal and bacteriostatic functions on an oilfield reinjection water system in high chlorine, high salt, high temperature and high pressure environments at a lower dosage.

Description

technical field

[0001] The invention relates to the field of water treatment agents, in particular to quinoline quaternary ammonium salt compounds and their preparation methods and applications. Background technique

[0002] At present, most of my country's oil fields have entered the middle and late stages of development, and water injection is generally used for oil recovery. In the case of serious shortage of water resources, the reinjection of oil production sewage not only solves the problem of water shortage, but also solves the problem of environmental pollution caused by the discharge of oil production sewage. However, oil extraction wastewater contains a large number of microorganisms, Ca 2+ , Mg 2+ , Cl - , SO 4 2- and other corrosive scaling ions, which can easily cause corrosion and scaling of facilities; oilfield sewage also contains a variety of microorganisms, among which sulfate reducing bacteria (SRB) are the main hazards, because the water quality cond...

Examples

preparation example Construction

[0027] The second aspect of the present invention provides a kind of preparation method of quinoline quaternary ammonium salt compound, the method comprises: under the quaternization reaction condition, in organic solvent, the compound shown in formula (2) and formula (3) The shown compound carries out quaternization reaction, thereby obtains the compound shown in formula (1);

[0028] Formula (3) X-R 1 -X;

[0029] Among them, A is -O-(CH 2 CH 2 O) n -R 2 , n is an integer above 1, R 2 is H or C1-C6 alkyl; R is H or C1-C10 alkyl; R 1 C1-C10 alkylene, -L 1 -O-L 2 -, -(CH 2 CH 2 O) m -L 3 -or-(CH 2 O) m -L 4 -, where L 1 , L 2 , L 3 and L 4 Each is independently selected from C1-C6 alkylene groups, m is an integer of 2 or more; X is halogen.

[0030] Wherein, the above-mentioned groups can be selected as described above, and the present invention will not repeat them here.

[0031] According to the present invention, specific examples of compounds represe...

preparation example 1

[0060] 19.2g 2-methyl-5-hydroxyquinoline (purchased from Tissier (Shanghai) Chemical Industry Development Co., Ltd.), catalyst (sodium hydroxide, 0.1 gram) joins in the reactor, closes the reactor, replaces with nitrogen The air in the kettle was stirred, and the temperature was raised to 120° C., and about 44 g of ethylene oxide was slowly pressed in, and then the reaction was continued for 2 hours. After cooling down, the product was terminated by oxalic acid, which was identified as a compound represented by formula (2), wherein the average n of the ethylene oxide repeating unit of the group A was about 8.

preparation example 2

[0062] 19.2g 4-methyl-7-hydroxyquinoline (purchased from Tissier (Shanghai) Chemical Industry Development Co., Ltd.), catalyst (sodium hydroxide, 0.1 gram) joins in the reactor, closes the reactor, replaces with nitrogen Air in the kettle, stirred, and the temperature was raised to 120° C., and about 88 g of ethylene oxide was slowly pressed in, and then the reaction was continued for 2 hours. After cooling down, the product was terminated by oxalic acid, which was identified as a compound represented by formula (2), wherein the average n of the ethylene oxide repeating unit of the group A was about 16.

technical field

[0001] The invention relates to the field of water treatment agents, in particular to quinoline quaternary ammonium salt compounds and their preparation methods and applications. Background technique

[0002] At present, most of my country's oil fields have entered the middle and late stages of development, and water injection is generally used for oil recovery. In the case of serious shortage of water resources, the reinjection of oil production sewage not only solves the problem of water shortage, but also solves the problem of environmental pollution caused by the discharge of oil production sewage. However, oil extraction wastewater contains a large number of microorganisms, Ca 2+ , Mg 2+ , Cl - , SO 4 2- and other corrosive scaling ions, which can easily cause corrosion and scaling of facilities; oilfield sewage also contains a variety of microorganisms, among which sulfate reducing bacteria (SRB) are the main hazards, because the water quality cond...

Examples

preparation example Construction

[0027] The second aspect of the present invention provides a kind of preparation method of quinoline quaternary ammonium salt compound, the method comprises: under the quaternization reaction condition, in organic solvent, the compound shown in formula (2) and formula (3) The shown compound carries out quaternization reaction, thereby obtains the compound shown in formula (1);

[0028] Formula (3) X-R 1 -X;

[0029] Among them, A is -O-(CH 2 CH 2 O) n -R 2 , n is an integer above 1, R 2 is H or C1-C6 alkyl; R is H or C1-C10 alkyl; R 1 C1-C10 alkylene, -L 1 -O-L 2 -, -(CH 2 CH 2 O) m -L 3 -or-(CH 2 O) m -L 4 -, where L 1 , L 2 , L 3 and L 4 Each is independently selected from C1-C6 alkylene groups, m is an integer of 2 or more; X is halogen.

[0030] Wherein, the above-mentioned groups can be selected as described above, and the present invention will not repeat them here.

[0031] According to the present invention, specific examples of compounds represe...

preparation example 1

[0060] 19.2g 2-methyl-5-hydroxyquinoline (purchased from Tissier (Shanghai) Chemical Industry Development Co., Ltd.), catalyst (sodium hydroxide, 0.1 gram) joins in the reactor, closes the reactor, replaces with nitrogen The air in the kettle was stirred, and the temperature was raised to 120° C., and about 44 g of ethylene oxide was slowly pressed in, and then the reaction was continued for 2 hours. After cooling down, the product was terminated by oxalic acid, which was identified as a compound represented by formula (2), wherein the average n of the ethylene oxide repeating unit of the group A was about 8.

preparation example 2

[0062] 19.2g 4-methyl-7-hydroxyquinoline (purchased from Tissier (Shanghai) Chemical Industry Development Co., Ltd.), catalyst (sodium hydroxide, 0.1 gram) joins in the reactor, closes the reactor, replaces with nitrogen Air in the kettle, stirred, and the temperature was raised to 120° C., and about 88 g of ethylene oxide was slowly pressed in, and then the reaction was continued for 2 hours. After cooling down, the product was terminated by oxalic acid, which was identified as a compound represented by formula (2), wherein the average n of the ethylene oxide repeating unit of the group A was about 16.

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