Foam-inhibition-type corrosion inhibition microbicide, preparation method therefor and foam-inhibition-type corrosion inhibition microbicide composition

Abstract

The present invention provides a foam-inhibition-type corrosion inhibition microbicide, a preparation method therefor, and a foam-inhibition-type corrosion inhibition microbicide composition. The foam-inhibition-type corrosion inhibition microbicide comprises at least one of a first compound, a second compound, and a third compound. The structure of the first compound is as represented by formula (I). The structure of the second compound is as represented by formula (II). The structure of the third compound is as represented by formula (III). The foam-inhibition-type corrosion inhibition microbicide composition of the present invention comprises: 10-50% of the foam-inhibition-type corrosion inhibition microbicide, 35-90% of a solvent, and 0-15% of an auxiliary agent. The foam-inhibition-type corrosion inhibition microbicide and the foam-inhibition-type corrosion inhibition microbicide composition provided by the present invention have relatively good corrosion inhibition capability, microbicidal capability and foam inhibition capability.

Description

Anti-foaming corrosion inhibitor and fungicide, preparation method thereof, and anti-foaming corrosion inhibitor and fungicide composition Technical Field

[0001] The present invention relates to the field of sterilization and anticorrosion, and in particular to an anti-foaming corrosion-inhibiting bactericide, a preparation method thereof, and an anti-foaming corrosion-inhibiting bactericide composition. Background Art

[0002] Pipelines in oil and gas field production systems are subject to simultaneous corrosion from carbon dioxide and microorganisms, posing a severe challenge to safe production. Currently, injecting biocides and corrosion inhibitors has become the mainstream method to inhibit corrosion and ensure pipeline safety.

[0003] CN116082227A discloses a high-temperature-resistant, water-soluble Schiff base corrosion inhibitor and its preparation method. The inhibitor is prepared from organic amines, aldehyde compounds, and halogenated hydrocarbons. This high-temperature-resistant, water-soluble Schiff base corrosion inhibitor has strong adsorption and good water solubility, and exhibits excellent corrosion protection against carbon steel under ultra-high temperature conditions in an organic acid medium environment exceeding 150°C. CN114645278A discloses a carbon dioxide corrosion inhibitor and its preparation method. The inhibitor comprises the following components by weight: 20-25 parts of an organic acid, 20-25 parts of an organic amine, 0.3-0.5 parts of DTPMPA, 1-3 parts of propargyl alcohol, and 46.5-58.7 parts of water. Under conditions of a carbon dioxide content of 50% to 90% and high temperatures of 100-150°C, this carbon dioxide corrosion inhibitor exhibits excellent corrosion inhibition against corrosion caused by high carbon dioxide content in produced fluids (gases) after multiple rounds of carbon dioxide treatment in oil and gas fields. The above literatures only reported corrosion inhibitors without exploring the bactericidal function.

[0004] CN111109265A discloses a corrosion inhibitor and a preparation method thereof, and a corrosion inhibitor and a bactericide for CO2 injection and production wells. The corrosion inhibitor and bactericide comprises: a modified product of an imidazoline quaternary ammonium salt, dodecyldimethylbenzyl ammonium chloride, dithiocyanomethane, and an antifreeze agent in a mass ratio of (3-5): (1-2): (0.1-0.3): (3-6). The corrosion inhibitor and bactericide simultaneously possesses excellent corrosion inhibition, bactericidal, and antifreeze properties and can be used in antiseptic and bactericidal environments in high-altitude cold and low-temperature winter environments. However, the corrosion inhibitor and bactericide simply compound agents with corrosion inhibition and bactericidal functions.

[0005] Existing biocide and corrosion inhibitor products are essentially simply compounding agents with both corrosion inhibition and biocide functions. This approach, however, requires a large dosage of agents, significantly increasing corrosion control costs. The introduction of large quantities of agents also poses the risk of environmental pollution and complicates post-processing. Furthermore, the screening of compounded biocides and corrosion inhibitors requires that they are compatible, non-chemically reactive, and capable of maintaining their respective biocide and corrosion inhibition properties. This makes the screening and evaluation of compounded agents relatively complex. Furthermore, the resulting biocide and corrosion inhibitor products often exhibit poor biocide, corrosion inhibition, and foam suppression effects.

[0006] Summary of the Invention

[0007] To solve the above technical problems, the present invention aims to provide an anti-foaming corrosion inhibitor and fungicide, a preparation method thereof, and an anti-foaming corrosion inhibitor and fungicide composition. The present invention provides an anti-foaming corrosion inhibitor and fungicide composition having good corrosion inhibition, fungicidal, and anti-foaming abilities.

[0008] In order to achieve the above-mentioned object, the first aspect of the present invention provides an anti-foaming corrosion inhibitor fungicide, which comprises at least one of a first compound, a second compound and a third compound;

[0009] Wherein, the structural formula of the first compound is shown in Formula I:

[0010] The structural formula of the second compound is shown in Formula II:

[0011] The structural formula of the third compound is shown in Formula III:

[0012] In Formula I, Formula II and Formula III, R1 and R2 are each independently selected from one of a C1-C10 straight-chain or branched alkyl group, a C1-C10 alkoxy group, a C1-C10 straight-chain or branched alkenyl group, a C1-C10 alkylthio group, a C3-C10 cycloalkyl group, a C6-C20 aryl group, and a C4-C20 heterocyclic or heteroaryl group; R3 is selected from one of a single bond, a C1-C10 straight-chain or branched alkyl group, a C1-C10 alkoxy group, a C1-C10 straight-chain or branched alkenyl group, a C1-C10 alkylthio group, a C3-C10 cycloalkyl group, a C6-C20 aryl group, and a C4-C20 heterocyclic or heteroaryl group; X is selected from one of chlorine, bromine and iodine; 0<n≤3, n is a natural number, and m is a natural number greater than or equal to 1.

[0013] The second aspect of the present invention provides a method for preparing an anti-foaming corrosion inhibitor bactericide, which comprises the following steps:

[0014] (1) mixing a polyetheramine and an aldehyde compound to obtain a first mixture;

[0015] (2) subjecting the first mixture to a first heating treatment to obtain an intermediate product;

[0016] (3) mixing the intermediate product and a halogenated hydrocarbon to obtain a second mixture;

[0017] (4) subjecting the second mixture to a second heating treatment to obtain the anti-foaming corrosion inhibitor and fungicide.

[0018] The anti-foaming corrosion inhibitor provided by the present invention is a new type of anti-foaming corrosion inhibitor formed by the reaction of polyetheramine, aldehyde compounds and halogenated hydrocarbons. The anti-foaming corrosion inhibitor can be quickly adsorbed on metal surfaces and bacterial surfaces, and has good corrosion inhibition, bactericidal and anti-foaming abilities.

[0019] In the above preparation method, preferably, in step (1), the mixing molar ratio of the polyetheramine and the aldehyde compound is (1-2): (1-1.5).

[0020] In the above preparation method, preferably, in step (1), the polyetheramine includes polyetheramine D230.

[0021] In the above-mentioned preparation method, preferably, in step (1), the aldehyde compound comprises one or a combination of an aromatic aldehyde containing one aldehyde group, an aliphatic aldehyde containing one aldehyde group, an aromatic aldehyde containing multiple aldehyde groups, and an aliphatic aldehyde containing multiple aldehyde groups. More preferably, the aldehyde compound comprises one or a combination of formaldehyde, acetaldehyde, glyoxal, glutaraldehyde, and aromatic formaldehyde.

[0022] In the above preparation method, preferably, step (1) further comprises: mixing the polyetheramine, the aldehyde compound, and an organic acid catalyst to obtain the first mixture, wherein the molar ratio of the organic acid catalyst to the polyetheramine is 0.01:(1.5-2). More preferably, the organic acid catalyst comprises one or a combination of formic acid, acetic acid, propionic acid, and trifluoromethanesulfonic acid.

[0023] In the above preparation method, preferably, in step (2), subjecting the first mixture to a first heat treatment specifically comprises: heating the first mixture at a temperature of 40° C. to 100° C. for 2 to 12 hours.

[0024] In the above preparation method, preferably, in step (3), the molar ratio of the halogenated hydrocarbon to the polyetheramine is 1:(1-2).

[0025] In the above preparation method, preferably, in step (3), the halogenated hydrocarbon comprises one or a combination of halogenated olefins, halogenated alkanes, and halogenated aromatic hydrocarbons. More preferably, the halogenated hydrocarbon comprises one or a combination of alkyl chlorides, alkyl bromides, alkyl iodides, allyl chloride, benzyl chloride, benzyl bromide, and the like.

[0026] In the above preparation method, preferably, in step (4), subjecting the second mixture to a second heat treatment specifically comprises: heating the second mixture at a temperature of 40° C. to 100° C. for 2 to 24 hours.

[0027] The third aspect of the present invention provides an anti-foaming corrosion inhibitor and fungicide prepared by the above-mentioned method for preparing the anti-foaming corrosion inhibitor and fungicide.

[0028] The fourth aspect of the present invention provides an anti-foaming corrosion inhibitor bactericide composition, which comprises, based on the total weight of the anti-foaming corrosion inhibitor bactericide composition being 100%, 10% to 50% of the above-mentioned anti-foaming corrosion inhibitor bactericide, 35% to 90% of solvent and 0% to 15% of auxiliary agent.

[0029] In the above-mentioned anti-foaming corrosion inhibitor bactericide composition, preferably, based on the total weight of the anti-foaming corrosion inhibitor bactericide composition being 100%, the content of the auxiliary agent is 1% to 5%.

[0030] In the above-mentioned anti-foaming corrosion inhibitor bactericide composition, preferably, the solvent includes one or a combination of water, alcohols, amides, nitriles, ketones, ethers and aromatic compounds.

[0031] In the above-mentioned anti-foaming corrosion inhibitor bactericide composition, preferably, the auxiliary agent includes one or a combination of thiourea, thiazole, pyridine, piperidine, quinoline, 1,3,5-triazine and its derivatives, and tributyl phosphate.

[0032] According to a specific embodiment of the present invention, preferably, the anti-foaming corrosion inhibitor and fungicide composition is prepared by the following steps: adding a solvent to the anti-foaming corrosion inhibitor; or adding a solvent and an adjuvant to the anti-foaming corrosion inhibitor to obtain the anti-foaming corrosion inhibitor composition.

[0033] The anti-foaming corrosion inhibitor and anti-foaming corrosion inhibitor composition provided by the present invention can be quickly adsorbed on metal surfaces and bacterial surfaces, have good corrosion inhibition, bactericidal and anti-foaming abilities, and can be used for chemical corrosion protection and microbial corrosion protection in oil and gas field pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] FIG1 is a schematic flow chart of a method for preparing an anti-foaming corrosion inhibitor bactericide provided in an embodiment of the present invention.

[0035] FIG2 is a schematic flow chart of a method for preparing an anti-foaming corrosion inhibitor bactericide composition provided in an embodiment of the present invention.

[0036] FIG3 is a schematic flow chart of a method for preparing an anti-foaming corrosion inhibitor bactericide provided in an embodiment of the present invention.

[0037] FIG4 is a schematic flow chart of a method for preparing an anti-foaming corrosion inhibitor bactericide provided in an embodiment of the present invention.

[0038] FIG5 is an infrared spectrum of the anti-foaming corrosion inhibitor bactericide provided in Example 1.

[0039] FIG6 is a nuclear magnetic resonance spectrum of the anti-foaming corrosion inhibitor provided in Example 1.

[0040] FIG7 is an infrared spectrum of the anti-foaming corrosion inhibitor bactericide provided in Example 2.

[0041] FIG8 is a nuclear magnetic resonance spectrum of the anti-foaming corrosion inhibitor provided in Example 2.

[0042] FIG9 is an infrared spectrum of the anti-foaming corrosion inhibitor bactericide provided in Example 3.

[0043] FIG10 is a nuclear magnetic resonance spectrum of the anti-foaming corrosion inhibitor provided in Example 3.

[0044] FIG11 is an infrared spectrum of the anti-foaming corrosion inhibitor bactericide provided in Example 4.

[0045] FIG12 is a nuclear magnetic resonance spectrum of the anti-foaming corrosion inhibitor provided in Example 4.

[0046] FIG13 is an optical image of the corrosion inhibitor provided in Comparative Example 7 after mixing with water.

[0047] FIG14 is an optical image of the corrosion inhibitor provided in Comparative Example 8 after mixing with water. DETAILED DESCRIPTION

[0048] In order to have a clearer understanding of the technical features, objectives and beneficial effects of the present invention, the present invention is now described in detail below, but it should not be understood as limiting the scope of implementation of the present invention.

[0049] According to a specific embodiment of the present invention, a first aspect of the present invention provides a foam-inhibiting corrosion inhibitor fungicide, which includes at least one of a first compound, a second compound, and a third compound;

[0050] Wherein, the structural formula of the first compound is shown in Formula I:

[0051] The structural formula of the second compound is shown in Formula II:

[0052] The structural formula of the third compound is shown in Formula III:

[0053] In Formula I, Formula II and Formula III, R1 and R2 are each independently selected from one of a C1-C10 straight-chain or branched alkyl group, a C1-C10 alkoxy group, a C1-C10 straight-chain or branched alkenyl group, a C1-C10 alkylthio group, a C3-C10 cycloalkyl group, a C6-C20 aryl group, and a C4-C20 heterocyclic or heteroaryl group; R3 is selected from one of a single bond, a C1-C10 straight-chain or branched alkyl group, a C1-C10 alkoxy group, a C1-C10 straight-chain or branched alkenyl group, a C1-C10 alkylthio group, a C3-C10 cycloalkyl group, a C6-C20 aryl group, and a C4-C20 heterocyclic or heteroaryl group; X is selected from one of chlorine, bromine and iodine; 0<n≤3, n is a natural number, and m is a natural number greater than or equal to 1.

[0054] The anti-foaming corrosion inhibitor of the present invention includes at least one of a first compound, a second compound, and a third compound. For example, the anti-foaming corrosion inhibitor may include only the first compound, or only the second compound, or only the third compound. In addition, the anti-foaming corrosion inhibitor may also include a combination of any two of the above three compounds. For example, the anti-foaming corrosion inhibitor includes the first compound and the second compound, or includes the first compound and the third compound, or includes the second compound and the third compound. In addition, the anti-foaming corrosion inhibitor may also include a combination of the first compound, the second compound, and the third compound.

[0055] According to a specific embodiment of the present invention, in Formula I, Formula II and Formula III, R1 and R2 are each independently selected from substituted or unsubstituted C1-C10 straight or branched alkyl, substituted or unsubstituted C1-C10 alkoxy, substituted or unsubstituted C2-C10 straight or branched alkenyl, C1-C10 alkylthio, substituted or unsubstituted C3-C10 cycloalkyl, substituted or unsubstituted C6-C20 aryl and substituted or unsubstituted C4-C10 alkylthio. R3 is selected from a single bond, a substituted or unsubstituted C1-C10 straight or branched alkyl group, a substituted or unsubstituted C1-C10 alkoxy group, a substituted or unsubstituted C2-C10 straight or branched alkenyl group, a C1-C10 alkylthio group, a substituted or unsubstituted C3-C10 cycloalkyl group, a substituted or unsubstituted C6-C20 aryl group, and a substituted or unsubstituted C4-C20 heterocyclic or heteroaryl group.

[0056] Specifically, R1, R2, and R3 can each be independently selected from a C1 to C10 straight-chain alkyl group, such as a C1 straight-chain alkyl group (methyl), a C2 straight-chain alkyl group (ethyl), a C5 straight-chain alkyl group (pentyl), a C6 straight-chain alkyl group (hexyl), and a C10 straight-chain alkyl group (decyl). In addition, R1, R2, and R3 can each be independently selected from a C3 to C10 branched-chain alkyl group, such as a branched-chain alkyl group containing 3 carbon atoms, a branched-chain alkyl group containing 5 carbon atoms, a branched-chain alkyl group containing 6 carbon atoms, and a branched-chain alkyl group containing 10 carbon atoms.

[0057] R1, R2 and R3 can also be independently selected from C1 to C10 alkoxy groups, such as C1 alkoxy (methoxy), C5 alkoxy (pentyloxy) and C10 alkoxy (decyloxy).

[0058] R1, R2 and R3 can also be independently selected from C2 to C10 straight chain or branched alkenyl groups, such as C2 straight chain alkenyl (vinyl), C3 straight chain alkenyl (propenyl) and C10 straight chain alkenyl (decenyl).

[0059] R1, R2 and R3 can also be independently selected from C1 to C10 alkylthio groups, such as C1 alkylthio (methylthio), C5 alkylthio (pentylthio), C6 alkylthio and C10 alkylthio.

[0060] R1, R2 and R3 can also be independently selected from C3 to C10 cycloalkyl groups, such as C3 cycloalkyl, C4 cycloalkyl, C5 cycloalkyl, C6 cycloalkyl and C10 cycloalkyl.

[0061] R1, R2 and R3 can also be independently selected from C6-C20 aryl groups, such as aryl groups containing one benzene ring.

[0062] R1, R2 and R3 can also be independently selected from C4-C20 heterocyclic groups or heteroaryl groups, such as substituted or unsubstituted furyl groups containing 4 to 20 carbon atoms and substituted or unsubstituted pyranyl groups containing 5 to 20 carbon atoms.

[0063] Furthermore, R1 is preferably selected from one of C2~C10 straight-chain alkyl, C6~C20 aryl and C1~C10 alkoxy, R2 is preferably selected from one of C1~C10 straight-chain alkyl and C2~C10 straight-chain or branched alkenyl, and R3 is preferably selected from one of a single bond, C2~C10 straight-chain alkyl and C6~C20 aryl.

[0064] Furthermore, R1 is preferably selected from one of C1 to C10 alkoxy groups, R2 is preferably selected from one of C1 to C10 straight-chain alkyl groups and C2 to C10 straight-chain or branched alkenyl groups, and R3 is preferably selected from one of a single bond and a C1 to C10 straight-chain alkyl group.

[0065] Specifically, R1, R2 and R3 include but are not limited to the types and structural formulas shown in Table 1 below.

[0066] Table 1

[0067] According to a specific embodiment of the present invention, the second aspect of the present invention provides a method for preparing an anti-foaming corrosion inhibitor fungicide, which comprises the following steps:

[0068] (1) mixing a polyetheramine and an aldehyde compound to obtain a first mixture;

[0069] (2) subjecting the first mixture to a first heating treatment to obtain an intermediate product;

[0070] (3) mixing the intermediate product and a halogenated hydrocarbon to obtain a second mixture;

[0071] (4) subjecting the second mixture to a second heating treatment to obtain the anti-foaming corrosion inhibitor and fungicide.

[0072] The preparation method of the anti-foaming corrosion inhibitor bactericide proposed by the present invention mainly uses polyetheramine, aldehyde compound and halogenated hydrocarbon as raw materials.

[0073] Specifically, the preparation method first adds a polyetheramine and an aldehyde compound into a preparation container. The two substances are added to the preparation container in a molar ratio of (1-2):(1-1.5). Specifically, the molar ratio of the polyetheramine to the aldehyde compound can be 1:1, 1.5:1, 2:1, or 2:1.5. After the addition, the polyetheramine and aldehyde compound are mixed, for example, by stirring, to obtain a first mixture.

[0074] Afterwards, the first mixture is subjected to a first heat treatment, so that the polyetheramine and the aldehyde compound react to generate an intermediate product. The first heat treatment can increase the reaction rate of the polyetheramine and the aldehyde compound.

[0075] In some embodiments, subjecting the first mixture to a first heat treatment specifically includes heating the first mixture at a temperature of 40°C to 100°C for 2 to 12 hours. By controlling the temperature to a minimum of 40°C and a maximum of 100°C, the polyetheramine and aldehyde compound can react, increasing their reaction rate, while also preventing excessive temperatures from damaging their structures. Furthermore, the first heat treatment duration is 2 to 12 hours, ensuring complete reaction between the polyetheramine and aldehyde compound under these temperature conditions.

[0076] Then, the halogenated hydrocarbon is added to the preparation container, and the halogenated hydrocarbon is added to the preparation container at a molar ratio of 1:(1-2) of the halogenated hydrocarbon to the polyetheramine. After the addition, the halogenated hydrocarbon and the intermediate product are mixed, for example, by stirring, to obtain a second mixture.

[0077] Then, the second mixture is subjected to a second heating treatment, so that the intermediate product generated by the reaction of the halogenated hydrocarbon with the polyetheramine and the aldehyde compound reacts to obtain the anti-foaming corrosion inhibitor bactericide. The second heating treatment can increase the reaction rate of the halogenated hydrocarbon and the intermediate product.

[0078] In some embodiments, subjecting the second mixture to a second heat treatment specifically includes heating the second mixture at a temperature of 40°C to 100°C for 2 to 24 hours. By controlling the temperature to a minimum of 40°C and a maximum of 100°C, the intermediate product and the halogenated hydrocarbon can react, increasing their reaction rate, while also preventing excessive temperatures from damaging their structures. Furthermore, the second heat treatment is performed for a duration of 2 to 24 hours. This controlled heating duration ensures that the intermediate product and the halogenated hydrocarbon react completely under these temperature conditions.

[0079] In some embodiments, step (1) further comprises: adding an organic acid catalyst to the preparation container to mix the polyetheramine, the aldehyde compound and the organic acid catalyst to obtain a first mixture; the molar ratio of the organic acid catalyst to the polyetheramine is 0.01:(1.5-2). By adding the organic acid catalyst to the preparation container, the reaction between the polyetheramine and the aldehyde compound is carried out in an acidic environment, which can increase the reaction rate of the polyetheramine and the aldehyde compound, and ultimately increase the preparation rate of the anti-foaming corrosion inhibitor. In addition, when adding the organic acid catalyst to the preparation container, it is added according to the molar ratio of the organic acid catalyst to the polyetheramine of 0.01:(1.5-2), which can not only ensure that the organic acid catalyst can play a catalytic role, but also avoid the excessive amount of the organic acid catalyst affecting the structure of the final compound.

[0080] Specifically, the organic acid catalyst can be added before or after the polyetheramine and aldehyde compound are added to the preparation container, as long as the polyether and aldehyde compound can react in an acidic environment and be catalyzed.

[0081] In some embodiments, the organic acid catalyst includes one or a combination of formic acid, acetic acid, propionic acid, and trifluoromethanesulfonic acid.

[0082] In some embodiments, the polyetheramine includes polyetheramine D230 and the like.

[0083] In some embodiments, the aldehyde compound includes one or more of an aromatic aldehyde containing one aldehyde group, an aliphatic aldehyde containing one aldehyde group, an aromatic aldehyde containing multiple aldehyde groups, and an aliphatic aldehyde containing multiple aldehyde groups. That is, the aldehyde compound may include an aromatic aldehyde containing one aldehyde group, that is, an aldehyde compound containing one aldehyde group and having a benzene ring; it may also include an aromatic aldehyde containing multiple aldehyde groups, specifically, the aromatic aldehyde containing one aldehyde group includes benzaldehyde, and the aromatic aldehyde containing multiple aldehyde groups includes o-phthalaldehyde, terephthalaldehyde, and / or isophthalaldehyde; it may also include aliphatic aldehyde containing one aldehyde group or aliphatic aldehyde containing multiple aldehyde groups, specifically, the aliphatic aldehyde containing one aldehyde group includes formaldehyde and / or acetaldehyde, and the aliphatic aldehyde containing multiple aldehyde groups includes glyoxal and / or glutaraldehyde. Preferably, the aldehyde compound includes one or more of aliphatic aldehyde containing one aldehyde group and aliphatic aldehyde containing multiple aldehyde groups. By mixing the polyetheramine with aromatic aldehydes and / or aliphatic aldehydes containing different amounts of aldehyde groups, the first mixture obtained by mixing the two can smoothly generate an intermediate product after the first heating treatment.

[0084] In some embodiments, the halogenated hydrocarbons include one or more combinations of halogenated alkenes, halogenated alkanes and halogenated aromatic hydrocarbons. Preferably, the halogenated alkanes include one or more combinations of chloroalkanes, iodoalkanes and brominated alkanes, the halogenated alkenes include allyl chloride and the like, and the halogenated aromatic hydrocarbons include benzyl chloride and / or benzyl bromide. Specifically, the halogenated alkanes include one or more combinations of C1-C4 straight-chain or branched chloroalkanes, iodoalkanes and brominated alkanes. Preferably, the halogenated hydrocarbons include one or more combinations of halogenated alkenes and halogenated alkanes. By mixing one or more of these halogenated hydrocarbons with the intermediate product, the second mixture obtained by mixing the two can smoothly produce an anti-foaming corrosion inhibitor and fungicide after a second heat treatment.

[0085] In some embodiments, the method for preparing the anti-foaming corrosion inhibitor further comprises step (5): cooling the anti-foaming corrosion inhibitor to obtain the anti-foaming corrosion inhibitor. The cooling process can be performed using conventional techniques in the art.

[0086] During the preparation process of the anti-foaming corrosion inhibitor and bactericide of the present invention, the molar ratio between the raw materials is controlled, so that the preparation process is accurate, the problem of mismatch of the amount of substances is avoided, and the difficulty of preparation is reduced; and, due to the use of the polyetheramine, aldehyde compound, and halogenated hydrocarbon of the present invention, the generated novel anti-foaming corrosion inhibitor and bactericide can be quickly adsorbed on the metal surface and the bacterial surface, and the anti-foaming corrosion inhibitor and bactericide has good corrosion inhibition ability, bactericidal ability, and anti-foaming ability.

[0087] According to a specific embodiment of the present invention, the third aspect of the present invention provides an anti-foaming corrosion inhibitor bactericide prepared by the above-mentioned method for preparing the anti-foaming corrosion inhibitor bactericide.

[0088] According to a specific embodiment of the present invention, a fourth aspect of the present invention provides an anti-foaming corrosion inhibitor and fungicide composition, which, based on the total weight of the anti-foaming corrosion inhibitor and fungicide composition as 100%, comprises: 10% to 50% of the above-mentioned anti-foaming corrosion inhibitor and fungicide, 35% to 90% of a solvent, and 0% to 15% of an auxiliary agent. By controlling the weight proportions of the above-mentioned components, the ratio of each component is appropriately adjusted to ensure that the anti-foaming corrosion inhibitor and fungicide composition can be quickly adsorbed on metal surfaces and bacterial surfaces, thereby achieving good corrosion inhibition, sterilization, and anti-foaming effects.

[0089] According to a specific embodiment of the present invention, the anti-foaming corrosion inhibitor and fungicide composition is prepared by the following steps: adding a solvent to the anti-foaming corrosion inhibitor and fungicide; or adding a solvent and an adjuvant to the anti-foaming corrosion inhibitor and fungicide to obtain the anti-foaming corrosion inhibitor and fungicide composition.

[0090] Specifically, after the second mixture is subjected to a second heating treatment to obtain an anti-foaming corrosion inhibitor and fungicide, a solvent or a solvent and an auxiliary agent are added to the anti-foaming corrosion inhibitor and fungicide, and the anti-foaming corrosion inhibitor and fungicide composition is obtained while the anti-foaming corrosion inhibitor and fungicide is cooled.

[0091] In some embodiments, the step of obtaining the anti-foaming corrosion inhibitor and fungicide composition while cooling the anti-foaming corrosion inhibitor and fungicide specifically includes: adding a solvent to the preparation container; or adding a solvent and an adjuvant to the preparation container. On the one hand, after the anti-foaming corrosion inhibitor and fungicide is prepared, a solvent can be added to the preparation container to cool the anti-foaming corrosion inhibitor and fungicide in a high-temperature state, and further dissolve it to obtain the anti-foaming corrosion inhibitor and fungicide composition. On the other hand, considering that during the use of the anti-foaming corrosion inhibitor and fungicide composition, the storage temperature may be lower than 0°C, and the temperature may be too high during transportation. Therefore, solvents and adjuvants can also be added to the preparation container. By further adding adjuvants, the anti-foaming corrosion inhibitor and fungicide composition can still maintain excellent corrosion inhibition, bactericidal ability and anti-foaming ability under harsh conditions of use.

[0092] In some embodiments, based on the total weight of the anti-foaming corrosion inhibitor bactericide composition being 100%, the content of the auxiliary agent is 1% to 5%.

[0093] In some embodiments, the solvent includes one or more combinations of water, alcohols, amides, nitriles, ketones, ethers and aromatic compounds. For example, water can be added to the preparation container, the water cools the anti-foaming corrosion inhibitor and fungicide, and is mixed with the anti-foaming corrosion inhibitor to obtain an anti-foaming corrosion inhibitor composition. For another example, alcohols can also be added to the preparation container, the alcohols cool the anti-foaming corrosion inhibitor and fungicide, and are mixed with the anti-foaming corrosion inhibitor to obtain an anti-foaming corrosion inhibitor composition. Specifically, the alcohols can include one or more combinations of methanol, ethanol, propanol, butanol, methyl ethyl alcohol, isobutanol and 2-methyl-1-butanol. For another example, one or more of the other types of solvents mentioned above can also be added to the preparation container.

[0094] In some embodiments, the auxiliary agent includes one or a combination of thiourea, thiazole, pyridine, piperidine, quinoline, 1,3,5-triazine and its derivatives, and tributyl phosphate.

[0095] In some embodiments, the anti-foaming corrosion inhibitor bactericide composition includes an anti-foaming corrosion inhibitor and a solvent. The anti-foaming corrosion inhibitor composition is obtained by mixing the solvent with the anti-foaming corrosion inhibitor, so that the anti-foaming corrosion inhibitor composition is convenient to use, can be quickly adsorbed on the metal surface and the bacterial surface, and has good corrosion inhibition ability, bactericidal ability and anti-foaming ability. In other embodiments, the anti-foaming corrosion inhibitor composition includes an anti-foaming corrosion inhibitor, a solvent and an auxiliary agent. By mixing the solvent, the auxiliary agent and the anti-foaming corrosion inhibitor, the anti-foaming corrosion inhibitor composition containing the auxiliary agent can also be used normally in harsh environments (i.e., environments with too high or too low temperatures).

[0096] For example, an anti-foaming corrosion inhibitor and fungicide composition of the present invention includes an anti-foaming corrosion inhibitor, a solvent and an adjuvant. In terms of weight percentage, the anti-foaming corrosion inhibitor accounts for 10%, the solvent accounts for 85%, and the adjuvant accounts for 5%. For another example, another anti-foaming corrosion inhibitor and fungicide composition of the present invention includes an anti-foaming corrosion inhibitor, a solvent and an adjuvant. In terms of weight percentage, the anti-foaming corrosion inhibitor accounts for 12%, the solvent accounts for 85%, and the adjuvant accounts for 3%. For another example, another anti-foaming corrosion inhibitor and fungicide composition of the present invention includes an anti-foaming corrosion inhibitor, a solvent and an adjuvant. In terms of weight percentage, the anti-foaming corrosion inhibitor accounts for 15%, the solvent accounts for 70%, and the adjuvant accounts for 15%.

[0097] Referring to FIG1 , in one embodiment of the present invention, a method for preparing an anti-foaming corrosion inhibitor fungicide is proposed, which comprises the following steps:

[0098] S102: adding the polyetheramine and the aldehyde compound into a preparation container at a molar ratio of (1-2):(1-1.5), and mixing to obtain a first mixture;

[0099] S104: performing a first heating treatment on the first mixture to obtain an intermediate product;

[0100] S106: adding a halogenated hydrocarbon into the preparation container, and mixing the halogenated hydrocarbon with the intermediate product to obtain a second mixture;

[0101] S108: performing a second heating treatment on the second mixture to obtain an anti-foaming corrosion inhibitor and fungicide;

[0102] S110: Cooling the anti-foaming corrosion inhibitor and fungicide to obtain a finished product of the anti-foaming corrosion inhibitor and fungicide.

[0103] Referring to FIG2 , in one embodiment of the present invention, a method for preparing an anti-foaming corrosion inhibitor bactericide composition is proposed, which comprises the following steps:

[0104] S202: adding the polyetheramine and the aldehyde compound into a preparation container at a molar ratio of (1-2): (1-1.5), and mixing to obtain a first mixture;

[0105] S204: performing a first heating treatment on the first mixture to obtain an intermediate product;

[0106] S206: adding a halogenated hydrocarbon into the preparation container, and mixing the halogenated hydrocarbon with the intermediate product to obtain a second mixture;

[0107] S208: performing a second heating treatment on the second mixture to obtain an anti-foaming corrosion inhibitor and fungicide;

[0108] S210: adding a solvent, or a solvent and an auxiliary agent into a preparation container to obtain an anti-foaming corrosion inhibitor and fungicide composition.

[0109] Referring to FIG3 , in one embodiment of the present invention, a method for preparing an anti-foaming corrosion inhibitor fungicide is proposed, which comprises the following steps:

[0110] S302: adding the polyetheramine and the aldehyde compound into a preparation container at a molar ratio of (1-2): (1-1.5), and mixing to obtain a first mixture;

[0111] S304: heating the first mixture at a temperature of 40° C. to 100° C. for 2 to 12 hours to obtain an intermediate product;

[0112] S306: adding a halogenated hydrocarbon into the preparation container, and mixing the halogenated hydrocarbon with the intermediate product to obtain a second mixture;

[0113] S308: heating the second mixture at a temperature of 40° C. to 100° C. for 2 to 24 hours to obtain an anti-foaming corrosion inhibitor and fungicide;

[0114] S310: Cooling the anti-foaming corrosion inhibitor and fungicide to obtain a finished product of the anti-foaming corrosion inhibitor and fungicide.

[0115] Referring to FIG4 , in one embodiment of the present invention, a method for preparing an anti-foaming corrosion inhibitor fungicide is proposed, which comprises the following steps:

[0116] S402: adding the polyetheramine and the aldehyde compound into a preparation container at a molar ratio of (1-2): (1-1.5) and mixing;

[0117] S404: adding an organic acid catalyst into the preparation container to obtain a first mixture;

[0118] S406: performing a first heating treatment on the first mixture to obtain an intermediate product;

[0119] S408: adding a halogenated hydrocarbon into the preparation container, and mixing the halogenated hydrocarbon with the intermediate product to obtain a second mixture;

[0120] S410: performing a second heating treatment on the second mixture to obtain an anti-foaming corrosion inhibitor and fungicide;

[0121] S412: Cooling the anti-foaming corrosion inhibitor and fungicide to obtain a finished product of the anti-foaming corrosion inhibitor and fungicide.

[0122] The present invention will be specifically described below with reference to Examples and Comparative Examples. However, the present invention is not limited to these Examples and can be implemented with various modifications within the scope of the gist of the present invention.

[0123] It should be noted that in the following examples, comparative examples and test examples, the operations involved, if the conditions are not specified, were carried out according to conventional conditions or the conditions recommended by the manufacturer, and the raw materials used, if the manufacturer and specifications are not specified, are conventional products that can be obtained commercially.

[0124] Example 1

[0125] This embodiment provides an anti-foaming corrosion inhibitor and a anti-foaming corrosion inhibitor composition, and their preparation methods include the following steps:

[0126] (1) adding polyetheramine D230 and glyoxal in a molar ratio of 2:1 into a preparation container and mixing to obtain a first mixture;

[0127] (2) heating the first mixture at 80° C. for 6 hours to obtain an intermediate product;

[0128] (3) adding bromobutane to the preparation container, wherein the bromobutane is added in a molar ratio of polyetheramine D230:glyoxal:bromobutane of 2:1:1, and mixing to obtain a second mixture;

[0129] (4) heating the second mixture at 80° C. for 8 hours to obtain an anti-foaming corrosion inhibitor;

[0130] (5) Add water to the preparation container to obtain an anti-foaming corrosion inhibitor bactericide composition, which is recorded as No. 1.

[0131] Based on the total weight of the anti-foaming corrosion inhibitor bactericide composition being 100%, the content of the anti-foaming corrosion inhibitor bactericide is 35%, and the content of water is 65%.

[0132] The anti-foaming corrosion inhibitor obtained in step (4) was subjected to infrared spectroscopy and nuclear magnetic resonance analysis to obtain the infrared spectrum and nuclear magnetic resonance spectrum of the anti-foaming corrosion inhibitor, as shown in Figures 5 and 6. As can be seen from Figure 5, 3413 cm -1 The stretching vibration of NH2 is the characteristic peak of NH, 2969cm -1 、2872-2873cm -1 The stretching vibration of CH2 is 1637 cm -1 C=N characteristic peak, 1618cm -1 NH2 characteristic peak NH bending vibration, 1456cm -1 is the bending vibration of CH of CH2. As can be seen from Figure 6, 1 H NMR(D2O,400MHz)δ(ppm):0.75-1.13(t,CH3-,CH3-CH2-CH2),1.98-2.06(t,-CH2-N + (-CH2-)-,-CH2-O-),2.98-3.40(m,-CH(-CH3)-CH2-O-,),4.95-5.05(m,-CH=N + (-CH2-)-). The chemical structure of the anti-foaming corrosion inhibitor is as follows:

[0133] Wherein m is the degree of polymerization, which is a natural number greater than or equal to 1.

[0134] Example 2

[0135] This embodiment provides an anti-foaming corrosion inhibitor and a anti-foaming corrosion inhibitor composition, and their preparation methods include the following steps:

[0136] (1) adding polyetheramine D230 and glyoxal in a molar ratio of 1.5:1 into a preparation container and mixing to obtain a first mixture;

[0137] (2) heating the first mixture at 40° C. for 6 hours to obtain an intermediate product;

[0138] (3) adding bromobutane to the preparation container, wherein the bromobutane is added in a molar ratio of polyetheramine D230:glyoxal:bromobutane of 1.5:1:1, and mixing to obtain a second mixture;

[0139] (4) heating the second mixture at 100° C. for 8 hours to obtain an anti-foaming corrosion inhibitor;

[0140] (5) Add water to the preparation container to obtain an anti-foaming corrosion inhibitor bactericide composition, which is recorded as No. 2.

[0141] Based on the total weight of the anti-foaming corrosion inhibitor bactericide composition being 100%, the content of the anti-foaming corrosion inhibitor bactericide is 35%, and the content of water is 65%.

[0142] The anti-foaming corrosion inhibitor obtained in step (4) was subjected to infrared spectroscopy and nuclear magnetic resonance analysis to obtain the infrared spectrum and nuclear magnetic resonance spectrum of the anti-foaming corrosion inhibitor, as shown in Figures 7 and 8. As can be seen from Figure 7, 3414 cm - 1 The stretching vibration of NH2 is the characteristic peak of NH, 2969cm -1 、2872cm -1 The stretching vibration of CH2 is 1617 cm -1 C=N characteristic peak, 1582cm -1 NH2 characteristic peak NH bending vibration, 1454cm -1 is the bending vibration of CH of CH2. As can be seen from Figure 8, 1 H NMR(D2O,400MHz)δ(ppm):0.76-0.96(t,CH3-,CH3-CH2-CH2-),1.52-1.68(d,-CH2-O-),1.98-2.06(d,-CH2-N + (-CH2-)-),2.97-3.43(m,-CH(-CH3)-CH2-O-),4.75-5.10(m,-CH=N + (-CH2-)-). The anti-foaming corrosion inhibitor bactericide was determined to be a mixture of three compounds with the following chemical formula:

[0143] Wherein m is the degree of polymerization, which is a natural number greater than or equal to 1;

[0144] Example 3

[0145] This embodiment provides an anti-foaming corrosion inhibitor and a anti-foaming corrosion inhibitor composition, and their preparation methods include the following steps:

[0146] (1) adding polyetheramine D230 and glyoxal in a molar ratio of 1:1 into a preparation container and mixing to obtain a first mixture;

[0147] (2) heating the first mixture at 100° C. for 6 hours to obtain an intermediate product;

[0148] (3) adding iodomethane to the preparation container, wherein the iodomethane is added in a molar ratio of polyetheramine D230:glyoxal:iodomethane of 1:1:1, and mixing to obtain a second mixture;

[0149] (4) heating the second mixture at 100° C. for 8 hours to obtain an anti-foaming corrosion inhibitor;

[0150] (5) Water was added to the preparation container to obtain an anti-foaming corrosion inhibitor bactericide composition, which was recorded as No. 3.

[0151] Based on the total weight of the anti-foaming corrosion inhibitor bactericide composition being 100%, the content of the anti-foaming corrosion inhibitor bactericide is 35%, and the content of water is 65%.

[0152] The anti-foaming corrosion inhibitor obtained in step (4) was subjected to infrared spectroscopy and nuclear magnetic resonance analysis to obtain the infrared spectrum and nuclear magnetic resonance spectrum of the anti-foaming corrosion inhibitor, as shown in Figures 9 and 10. As can be seen from Figure 9, 3413 cm -1 The stretching vibration of NH2 is the characteristic peak of NH, 2970 cm -1 、2873cm -1 The stretching vibration of CH2 is 1635 cm -1 Characteristic peaks of C=N and C=O, 1594 cm -1 NH2 characteristic peak NH bending vibration, 1456cm - 1 is the bending vibration of CH of CH2. As can be seen from Figure 10, 1 H NMR(D2O,400MHz)δ(ppm):0.86-0.93(t,CH3-,CH3-CH2-CH2),1.68-1.80(t,-CH2-N + (-CH2-)-,-CH2-O-),2.97-3.43(m,-CH(-CH3)-CH2-O-,),4.81-4.97(m,-CH=N + (-CH2-)-). The chemical structure of the anti-foaming corrosion inhibitor is as follows:

[0153] Example 4

[0154] This embodiment provides an anti-foaming corrosion inhibitor and a anti-foaming corrosion inhibitor composition, and their preparation methods include the following steps:

[0155] (1) adding polyetheramine D230 and glyoxal in a molar ratio of 1:1 into a preparation container and mixing to obtain a first mixture;

[0156] (2) heating the first mixture at 70° C. for 6 hours to obtain an intermediate product;

[0157] (3) adding 3-chloropropene to the preparation container, wherein the 3-chloropropene is added in a molar ratio of polyetheramine D230:glyoxal:chloropropene of 1:1:1, and mixing to obtain a second mixture;

[0158] (4) heating the second mixture at 100° C. for 8 hours to obtain an anti-foaming corrosion inhibitor;

[0159] (5) Add water to the preparation container to obtain an anti-foaming corrosion inhibitor bactericide composition, which is recorded as No. 4.

[0160] Based on the total weight of the anti-foaming corrosion inhibitor bactericide composition being 100%, the content of the anti-foaming corrosion inhibitor bactericide is 35%, and the content of water is 65%.

[0161] The anti-foaming corrosion inhibitor obtained in step (4) was subjected to infrared spectroscopy and nuclear magnetic resonance analysis to obtain the infrared spectrum and nuclear magnetic resonance spectrum of the anti-foaming corrosion inhibitor, as shown in Figures 11 and 12. As can be seen from Figure 11, 3415 cm -1 The stretching vibration of NH2 is the characteristic peak of NH, 2968cm -1 、2872cm -1 The stretching vibration of CH2 is 1637 cm -1 Characteristic peaks of C=N and C=O, 1618 cm -1 NH2 characteristic peak NH bending vibration, 1556cm - 1 is the bending vibration of CH of CH2. As can be seen from Figure 12, 1 H NMR(D2O,400MHz)δ(ppm):0.80-0.93(t,CH3-CH(CH2)-),1.70-1.75(m,-CH2-N +(-CH2-)-,-CH(-CH3)-CH2-),2.95-3.26(m,-CH2-O-),4.85-5.08(m,-CH2-CH=CH2),5.67-5.71(m,-CH=N + (-CH2-)-). The chemical structure of the anti-foaming corrosion inhibitor is as follows:

[0162] Example 5

[0163] This embodiment provides an anti-foaming corrosion inhibitor and a anti-foaming corrosion inhibitor composition, and their preparation methods include the following steps:

[0164] (1) adding polyetheramine D230 and glutaraldehyde in a molar ratio of 1:1 into a preparation container and mixing to obtain a first mixture;

[0165] (2) heating the first mixture at 60° C. for 6 hours to obtain an intermediate product;

[0166] (3) adding iodomethane to the preparation container, wherein the iodomethane is added in a molar ratio of polyetheramine D230: glutaraldehyde: iodomethane of 1:1:1, and mixing to obtain a second mixture;

[0167] (4) heating the second mixture at 100° C. for 8 hours to obtain an anti-foaming corrosion inhibitor;

[0168] (5) Add ethanol to the preparation container to obtain an anti-foaming corrosion inhibitor bactericide composition, which is recorded as No. 5.

[0169] Based on the total weight of the anti-foaming corrosion inhibitor bactericide composition being 100%, the content of the anti-foaming corrosion inhibitor bactericide is 35%, and the content of ethanol is 65%.

[0170] The anti-foaming corrosion inhibitor obtained in step (4) was analyzed by infrared spectroscopy, and the results were: 3419 cm -1 The stretching vibration of NH2 is the characteristic peak of NH, 2965cm -1 、2870cm -1 is the stretching vibration of CH2, 1633 cm -1 Characteristic peaks of C=N and C=O, 1601 cm -1 NH2 characteristic peak NH bending vibration, 1436cm -1 is the bending vibration of CH of CH2. The results of nuclear magnetic resonance analysis are: 1 H NMR(D2O,400MHz)δ(ppm):0.82-0.94(t,CH3-CH(CH2)-),1.80-2.05(m,-CH2-N+ -CH2-,-CH(-CH3)-CH2-),2.93-3.36(m,-CH2-O-,-CH2CH2CH2-),4.90-5.13(m,-CH2-CH=N + -CH3), 5.64-5.75(m, -CH=N + -CH3). The chemical structure of the anti-foaming corrosion inhibitor is as follows:

[0171] Example 6

[0172] This embodiment provides an anti-foaming corrosion inhibitor and a anti-foaming corrosion inhibitor composition, and their preparation methods include the following steps:

[0173] (1) adding polyetheramine D230 and glutaraldehyde in a molar ratio of 1.5:1 into a preparation container and mixing to obtain a first mixture;

[0174] (2) heating the first mixture at 100° C. for 6 hours to obtain an intermediate product;

[0175] (3) adding iodomethane to the preparation container, wherein the iodomethane is added in a molar ratio of polyetheramine D230: glutaraldehyde: iodomethane of 1.5:1:1, and mixing to obtain a second mixture;

[0176] (4) heating the second mixture at 100° C. for 8 hours to obtain an anti-foaming corrosion inhibitor;

[0177] (5) Butanol was added to the preparation container to obtain an anti-foaming corrosion inhibitor bactericide composition, which was recorded as No. 6.

[0178] Based on the total weight of the anti-foaming corrosion inhibitor bactericide composition being 100%, the content of the anti-foaming corrosion inhibitor bactericide is 35%, and the content of butanol is 65%.

[0179] The anti-foaming corrosion inhibitor obtained in step (4) was analyzed by infrared spectroscopy, and the results were: 3414 cm -1 The stretching vibration of NH2 is the characteristic peak of NH, 2943 cm -1 、2871cm -1 The stretching vibration of CH2 is 1635 cm -1 Characteristic peaks of C=N and C=O, 1641 cm -1 NH2 characteristic peak NH bending vibration, 1456cm -1 is the bending vibration of CH of CH2. The results of nuclear magnetic resonance analysis are: 1H NMR(D2O,400MHz)δ(ppm):0.80-0.96(t,CH3-CH(CH2)-),1.81-2.15(m,-CH2-N + -CH2-,-CH(-CH3)-CH2-),2.93-3.42(m,-CH2-O-,-CH2CH2CH2-),4.92-5.15(m,-CH2-CH=N + -CH2-), 5.64-5.72(m, -CH=N + -CH2-). The anti-foaming corrosion inhibitor bactericide was determined to be a mixture of three compounds having the following chemical formula:

[0180] Wherein m is the degree of polymerization, which is a natural number greater than or equal to 1;

[0181] Example 7

[0182] This embodiment provides an anti-foaming corrosion inhibitor and a anti-foaming corrosion inhibitor composition, and their preparation methods include the following steps:

[0183] (1) adding polyetheramine D230 and benzaldehyde in a molar ratio of 2:1.5 into a preparation container and mixing to obtain a first mixture;

[0184] (2) heating the first mixture at 100° C. for 8 hours to obtain an intermediate product;

[0185] (3) adding 3-chloropropylene to the preparation container, wherein the 3-chloropropylene is added in a molar ratio of polyetheramine D230:benzaldehyde:chloropropylene of 2:1.5:1.5, and mixing to obtain a second mixture;

[0186] (4) heating the second mixture at 100° C. for 8 hours to obtain an anti-foaming corrosion inhibitor;

[0187] (5) Ethanol was added to the preparation container to obtain an anti-foaming corrosion inhibitor bactericide composition, which was recorded as No. 7.

[0188] Based on the total weight of the anti-foaming corrosion inhibitor bactericide composition being 100%, the content of the anti-foaming corrosion inhibitor bactericide is 35%, and the content of ethanol is 65%.

[0189] The anti-foaming corrosion inhibitor obtained in step (4) was analyzed by infrared spectroscopy, and the results were: 3413 cm -1 The stretching vibration of NH2 is the characteristic peak of NH, 2970 cm -1 、2875cm -1 The stretching vibration of CH2 is 1642 cm-1 C=N characteristic peak, 1621cm -1 NH2 characteristic peak NH bending vibration, 1456cm -1 The CH bending vibrations of CH2 are 1635, 1617, 1474, and 1454 cm -1 is the skeleton vibration of the benzene ring. The results of nuclear magnetic resonance analysis are: 1 H NMR(D2O,400MHz)δ(ppm):0.80-0.93(t,CH3-CH(CH2)-),1.81-2.15(m,-CH2-N + (-CH2-)-,-CH(-CH3)-CH2-),2.95-3.28(m,-CH2-O-),4.98-5.15(m,-CH2-CH=CH2),5.67-5.71(m,-CH=N + (-CH2-)-), 6.78-7.86 (m, -CH=CH-). The anti-foaming corrosion inhibitor bactericide was determined to be a mixture of two compounds with the following chemical formula:

[0190] Example 8

[0191] This embodiment provides an anti-foaming corrosion inhibitor and a anti-foaming corrosion inhibitor composition, and their preparation methods include the following steps:

[0192] (1) adding polyetheramine D230 and benzaldehyde in a molar ratio of 2:1.5 into a preparation container and mixing to obtain a first mixture;

[0193] (2) heating the first mixture at 100° C. for 8 hours to obtain an intermediate product;

[0194] (3) adding allyl chloride to the preparation container, wherein the allyl chloride is added in a molar ratio of polyetheramine D230:benzaldehyde:allyl chloride of 2:1.5:1.5, and mixing to obtain a second mixture;

[0195] (4) heating the second mixture at 100° C. for 8 hours to obtain an anti-foaming corrosion inhibitor;

[0196] (5) Add ethanol to the preparation container, and then add quinoline and tributyl phosphate (the mass ratio of the two is 1:1) as auxiliary agents, which is recorded as No. 8.

[0197] Based on the total weight of the anti-foaming corrosion inhibitor bactericide composition being 100%, the content of the anti-foaming corrosion inhibitor bactericide is 35%, the content of ethanol is 62%, and the content of the auxiliary agent (ie, quinoline and tributyl phosphate) is 3%.

[0198] Example 9

[0199] This embodiment provides an anti-foaming corrosion inhibitor and a anti-foaming corrosion inhibitor composition, and their preparation methods include the following steps:

[0200] (1) adding polyetheramine D230 and glyoxal in a molar ratio of 1:1 into a preparation container and mixing to obtain a first mixture;

[0201] (2) heating the first mixture at 80° C. for 2 hours to obtain an intermediate product;

[0202] (3) adding iodomethane to the preparation container, wherein the iodomethane is added in a molar ratio of polyetheramine D230:glyoxal:iodomethane of 1:1:1, and mixing to obtain a second mixture;

[0203] (4) heating the second mixture at 40° C. for 2 hours to obtain an anti-foaming corrosion inhibitor;

[0204] (5) Water was added to the preparation container to obtain an anti-foaming corrosion inhibitor bactericide composition, which was recorded as No. 9.

[0205] Based on the total weight of the anti-foaming corrosion inhibitor bactericide composition being 100%, the content of the anti-foaming corrosion inhibitor bactericide is 50%, and the content of water is 50%.

[0206] Example 10

[0207] This embodiment provides an anti-foaming corrosion inhibitor and a anti-foaming corrosion inhibitor composition, and their preparation methods include the following steps:

[0208] (1) adding polyetheramine D230 and glyoxal in a molar ratio of 1:1 into a preparation container and mixing to obtain a first mixture;

[0209] (2) heating the first mixture at 40° C. for 3 hours to obtain an intermediate product;

[0210] (3) adding iodomethane to the preparation container, wherein the iodomethane is added in a molar ratio of polyetheramine D230:glyoxal:iodomethane of 1:1:1, and mixing to obtain a second mixture;

[0211] (4) heating the second mixture at 50° C. for 4 hours to obtain an anti-foaming corrosion inhibitor;

[0212] (5) Add water to the preparation container to obtain an anti-foaming corrosion inhibitor bactericide composition, which is recorded as No. 10.

[0213] Based on the total weight of the anti-foaming corrosion inhibitor bactericide composition being 100%, the content of the anti-foaming corrosion inhibitor bactericide is 50%, and the content of water is 50%.

[0214] Comparative Example 1

[0215] This comparative example provides a corrosion inhibitor and a corrosion inhibitor composition, and their preparation methods include the following steps:

[0216] (1) adding polyetheramine D600 and glyoxal in a molar ratio of 2:1 into a preparation container and mixing to obtain a first mixture;

[0217] (2) heating the first mixture at 80° C. for 6 hours to obtain an intermediate product;

[0218] (3) adding bromobutane to the preparation container, wherein the bromobutane is added in a molar ratio of polyetheramine D600:glyoxal:bromobutane of 2:1:1, and mixing to obtain a second mixture;

[0219] (4) heating the second mixture at 80° C. for 8 hours to obtain a corrosion inhibitor;

[0220] (5) Add water to the preparation container to obtain a corrosion inhibitor composition, which is recorded as Type A.

[0221] Based on the total weight of the corrosion inhibitor composition being 100%, the content of the corrosion inhibitor is 35% and the content of water is 65%.

[0222] Comparative Example 2

[0223] This comparative example provides a corrosion inhibitor composition, which is designated as Type B.

[0224] The corrosion inhibitor composition is an aqueous solution of polyethyleneimine (molecular weight 600), with the total weight being 100%, the polyethyleneimine content being 35% and the water content being 65%.

[0225] Comparative Example 3

[0226] This comparative example provides a corrosion inhibitor and a corrosion inhibitor composition, and their preparation methods include the following steps:

[0227] (1) adding polyetheramine D400 and glyoxal in a molar ratio of 2:1 into a preparation container and mixing to obtain a first mixture;

[0228] (2) heating the first mixture at 80° C. for 6 hours to obtain an intermediate product;

[0229] (3) adding bromobutane to the preparation container, wherein the bromobutane is added in a molar ratio of polyetheramine D400:glyoxal:bromobutane of 2:1:1, and mixing to obtain a second mixture;

[0230] (4) heating the second mixture at 80° C. for 8 hours to obtain a corrosion inhibitor;

[0231] (5) Add water to the preparation container to obtain a corrosion inhibitor composition, which is recorded as Type C.

[0232] Based on the total weight of the corrosion inhibitor composition being 100%, the content of the corrosion inhibitor is 35% and the content of water is 65%.

[0233] Comparative Example 4

[0234] This comparative example provides a corrosion inhibitor and a corrosion inhibitor composition, and their preparation methods include the following steps:

[0235] (1) adding polyethyleneimine (molecular weight 600) and acetic acid in a molar ratio of 2:1 into a preparation container and mixing to obtain a first mixture;

[0236] (2) heating the first mixture at 80° C. for 6 hours to obtain a corrosion inhibitor;

[0237] (3) Add water to the preparation container to obtain a corrosion inhibitor composition, which is recorded as Type D.

[0238] Based on the total weight of the corrosion inhibitor composition being 100%, the content of the corrosion inhibitor is 35% and the content of water is 65%.

[0239] Comparative Example 5

[0240] This comparative example provides a corrosion inhibitor composition, which is designated as type E.

[0241] The corrosion inhibitor composition is an aqueous solution of polyetheramine D230, wherein the content of the polyetheramine D230 is 35% and the content of water is 65% based on the total weight of the composition being 100%.

[0242] Comparative Example 6

[0243] This comparative example provides a corrosion inhibitor and a corrosion inhibitor composition, and their preparation methods include the following steps:

[0244] (1) adding aniline and glyoxal in a molar ratio of 2:1 into a preparation container, and mixing to obtain a first mixture;

[0245] (2) heating the first mixture at 80° C. for 6 hours to obtain an intermediate product;

[0246] (3) adding bromobutane to the preparation container, wherein the bromobutane is added in a molar ratio of aniline:glyoxal:bromobutane of 2:1:1, and mixing to obtain a second mixture;

[0247] (4) heating the second mixture at 80° C. for 8 hours to obtain a corrosion inhibitor;

[0248] (5) Water was added to the preparation container to obtain a corrosion inhibitor composition, which was designated as Type F.

[0249] After the F-type corrosion inhibitor was mixed with water, it was found that the water solubility of the F-type corrosion inhibitor was poor.

[0250] Comparative Example 7

[0251] This comparative example provides a corrosion inhibitor, the preparation method of which comprises the following steps:

[0252] (1) adding tetraethylenepentamine and benzaldehyde in a molar ratio of 2:1 into a preparation container, and mixing to obtain a first mixture;

[0253] (2) heating the first mixture at 80° C. for 6 hours to obtain an intermediate product;

[0254] (3) adding bromobutane to the preparation container, wherein the bromobutane is added in a molar ratio of tetraethylenepentamine:benzaldehyde:bromobutane of 2:1:1, and mixing to obtain a second mixture;

[0255] (4) The second mixture was heated at 80° C. for 8 hours and then cooled to obtain a corrosion inhibitor, which was designated as type G.

[0256] After the G-type corrosion inhibitor was mixed with water, as shown in FIG13 , it was found that the G-type corrosion inhibitor was insoluble in water.

[0257] Comparative Example 8

[0258] This comparative example provides a corrosion inhibitor, denoted as H-type, which is a commercially available Mannich base compound (3-[(2,5-dimethylphenyl)amino]-1-phenyl-2-propene-1-one, purchased from Aladdin Reagent (Shanghai) Co., Ltd.).

[0259] After the H-type corrosion inhibitor was mixed with water, as shown in FIG14 , it was found that the H-type corrosion inhibitor was insoluble in water.

[0260] Test Example 1

[0261] Corrosion inhibition performance tests were conducted on the anti-foaming corrosion inhibitor compositions No. 1 to No. 10 provided in the above examples, as well as the corrosion inhibitor compositions Types A to E provided in the above comparative examples. It should be noted that due to their poor water solubility, corrosion inhibition performance tests were not conducted on Types F, G, and H.

[0262] The specific test process is as follows: No. 1 to No. 10 anti-foaming corrosion inhibitor and fungicide compositions and type A to type E corrosion inhibitor compositions are used to test 5% (mass concentration) sodium chloride water samples containing 500ppm of carbon dioxide. The concentrations of the anti-foaming corrosion inhibitor and fungicide compositions and the corrosion inhibitor compositions are 100mg / L, respectively. The corroded material is L245 (steel pipe material), the temperature environment is 40℃, the pressure environment is normal pressure, and the oxygen environment is anaerobic. After being placed in the above environment for 72h, the corrosion rate is calculated according to the mass difference of the test piece before and after the test. The corrosion rate calculation formula is shown in the following formula (1):

[0263] Where:

[0264] V c —Uniform corrosion rate, in millimeters per year (mm / a)

[0265] m—weight loss of coupon, in grams (g);

[0266] s—Exposed area of ​​coupon, in square centimeters (cm 2 );

[0267] t—experimental time, in hours (h);

[0268] ρ—relative density of the coupon, in grams per cubic centimeter (g / cm 3 ).

[0269] The corrosion rates of samples using No. 1 to No. 10 anti-foaming corrosion inhibitor and fungicide compositions, type A to type E corrosion inhibitor compositions, and blank samples were statistically analyzed, as shown in Table 2.

[0270] Table 2

[0271] As can be seen from Table 2, the corrosion rates of the anti-foaming corrosion inhibitor compositions No. 1 to No. 6 and No. 8 to No. 10 provided in the examples of the present invention are below 0.076 mm / a. Although the corrosion rate of the anti-foaming corrosion inhibitor composition No. 7 is higher than 0.076 mm / a, it is still significantly lower than that of the blank and comparative examples of the type A to type E corrosion inhibitor compositions. Therefore, the anti-foaming corrosion inhibitor composition of the present invention has good corrosion inhibition performance.

[0272] Test Example 2

[0273] The antifoaming corrosion inhibitor bactericide compositions No. 1 to No. 10 provided in the above examples and the corrosion inhibitor compositions Type A to Type E provided in the above comparative examples were tested for their bactericidal performance.

[0274] The specific test process is to use No. 1 to No. 10 anti-foaming corrosion inhibitor and bactericidal composition and type A to type E corrosion inhibitor composition to carry out sterilization test on water samples containing sulfate-reducing bacteria, respectively. The use concentration of the anti-foaming corrosion inhibitor and bactericidal composition and the corrosion inhibitor composition is 100 mg / L, respectively. After adding the anti-foaming corrosion inhibitor and bactericidal composition or the corrosion inhibitor composition to the water sample containing sulfate-reducing bacteria, the water sample is cultured in an anaerobic environment at 25°C for 24 hours, and the bacterial content is determined by referring to SY / T 0532-2012 Oilfield Injection Water Bacteria Analysis Method - Extinction Dilution Method, and the sterilization rate is calculated. The calculation formula of the sterilization rate is shown in the following formula (2):

[0275] Where:

[0276] X-bactericidal rate, %;

[0277] a2-Number of bacteria after sterilization, cells / mL;

[0278] a1 - number of blank bacteria, cells / mL.

[0279] The sterilization rates of the samples using the antifoaming corrosion inhibitor bactericide compositions No. 1 to No. 10, the corrosion inhibitor compositions Type A to Type E, and the blank samples were statistically analyzed, as shown in Table 3.

[0280] Table 3

[0281] It can be seen from Table 3 above that the anti-foaming corrosion inhibitor bactericide compositions No. 1 to No. 10 provided in the embodiments of the present invention have a bactericidal rate of more than 99.9%, and the anti-foaming corrosion inhibitor bactericide compositions of the present invention have good bactericidal performance.

[0282] Test Example 3

[0283] The anti-foaming performance test was conducted on the anti-foaming corrosion inhibitor bactericide compositions No. 1 to No. 10 provided in the above examples, and the corrosion inhibitor compositions type A to type E provided in the above comparative examples.

[0284] The specific test process is as follows: 200 ml of water sample from the production site is measured and placed in a stirring cup. The mixture is stirred at a speed of 4000 r / min for 1 min using a high-speed stirrer. Then, 1 ml of No. 1 to No. 10 anti-foaming corrosion inhibitor and fungicide composition or Type A to Type E corrosion inhibitor composition is added to the stirring cup using a pipette (or a pipette gun). The mixture is stirred at the same speed for another 1 min. After the stirring is completed, the mixture is immediately introduced into a 250 ml graduated cylinder and the stopwatch is pressed. The mixture is allowed to stand and observed, and the volume of the upper foam layer at 3 min is recorded. The mixture is repeated for more than 3 times. The average value of the measured data is taken to obtain the volume of the foam generated again.

[0285] The re-foaming volumes of the samples using the anti-foaming corrosion inhibitor bactericide compositions No. 1 to No. 10, the corrosion inhibitor compositions Type A to Type E, and the blank sample were statistically analyzed, as shown in Table 4.

[0286] Table 4

[0287] It can be seen from Table 4 that the re-foaming volume of the anti-foaming corrosion inhibitor bactericide compositions No. 1 to No. 10 provided in the embodiments of the present invention is 0 mL, and the anti-foaming corrosion inhibitor bactericide compositions of the present invention have good anti-foaming performance.

[0288] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A foam-inhibiting corrosion-inhibiting fungicide, comprising at least one of a first compound, a second compound and a third compound; in, The structural formula of the first compound is shown in Formula I: The structural formula of the second compound is shown in Formula II: The structural formula of the third compound is shown in Formula III: In Formula I, Formula II and Formula III, R1 and R2 are each independently selected from one of a C1-C10 straight or branched alkyl group, a C1-C10 alkoxy group, a C1-C10 straight or branched alkenyl group, a C1-C10 alkylthio group, a C3-C10 cycloalkyl group, a C6-C20 aryl group and a C4-C20 heterocyclic or heteroaryl group; R3 is selected from one of a single bond, a C1-C10 straight or branched alkyl group, a C1-C10 alkoxy group, a C1-C10 straight or branched alkenyl group, a C1-C10 alkylthio group, a C3-C10 cycloalkyl group, a C6-C20 aryl group and a C4-C20 heterocyclic or heteroaryl group; X is selected from one of chlorine, bromine and iodine; 0<n≤3 and n is a natural number, and m is a natural number greater than or equal to 1.

2. A method for preparing a foam-inhibiting corrosion inhibitor, comprising the following steps: (1) mixing a polyetheramine and an aldehyde compound to obtain a first mixture; (2) subjecting the first mixture to a first heating treatment to obtain an intermediate product; (3) mixing the intermediate product and a halogenated hydrocarbon to obtain a second mixture; (4) subjecting the second mixture to a second heating treatment to obtain the anti-foaming corrosion inhibitor bactericide.

3. The method for preparing the anti-foaming corrosion inhibitor bactericide according to claim 2, wherein: In step (1), the mixing molar ratio of the polyetheramine and the aldehyde compound is (1-2): (1-1.5).

4. The method for preparing the anti-foaming corrosion inhibitor bactericide according to claim 2, wherein: In step (1), the polyetheramine includes polyetheramine D230.

5. The method for preparing the anti-foaming corrosion inhibitor bactericide according to claim 2, wherein: In step (1), the aldehyde compound includes one or a combination of aromatic aldehydes containing one aldehyde group, aliphatic aldehydes containing one aldehyde group, aromatic aldehydes containing multiple aldehyde groups, and aliphatic aldehydes containing multiple aldehyde groups.

6. The method for preparing the anti-foaming corrosion inhibitor bactericide according to claim 2, wherein: Step (1) further comprises: mixing the polyetheramine, the aldehyde compound and the organic acid catalyst to obtain the first mixture, wherein the molar ratio of the organic acid catalyst to the polyetheramine is 0.01:(1.5-2).

7. The method for preparing the anti-foaming corrosion inhibitor bactericide according to claim 6, wherein: The organic acid catalyst includes one or a combination of formic acid, acetic acid, propionic acid and trifluoromethanesulfonic acid.

8. The method for preparing the anti-foaming corrosion inhibitor bactericide according to claim 2, wherein: In step (2), subjecting the first mixture to a first heating treatment specifically includes: heating the first mixture at a temperature of 40° C. to 100° C. for 2 to 12 hours.

9. The method for preparing the anti-foaming corrosion inhibitor bactericide according to claim 2, wherein: In step (3), the molar ratio of the halogenated hydrocarbon to the polyetheramine is 1:(1-2).

10. The method for preparing the anti-foaming corrosion inhibitor bactericide according to claim 2, wherein: In step (3), the halogenated hydrocarbon includes one or a combination of halogenated olefins, halogenated alkanes and halogenated aromatics.

11. The method for preparing the anti-foaming corrosion inhibitor bactericide according to claim 10, wherein: In step (3), the halogenated hydrocarbon includes one or a combination of alkyl chloride, alkyl bromide, alkyl iodide, allyl chloride, benzyl chloride and benzyl bromide.

12. The method for preparing the anti-foaming corrosion inhibitor bactericide according to claim 2, wherein: In step (4), subjecting the second mixture to a second heating treatment specifically includes: heating the second mixture at a temperature of 40° C. to 100° C. for 2 to 24 hours.

13. A foam-inhibiting corrosion-inhibiting bactericide composition, which comprises, based on the total weight of the foam-inhibiting corrosion-inhibiting bactericide composition being 100%,: 10% to 50% of the anti-foaming corrosion inhibitor bactericide according to claim 1, 35% to 90% of the solvent and 0% to 15% of the auxiliary agent.

14. The anti-foaming corrosion inhibitor bactericide composition according to claim 13, wherein: Based on the total weight of the anti-foaming corrosion inhibitor bactericide composition being 100%, the content of the auxiliary agent is 1% to 5%.

15. The anti-foaming corrosion inhibitor bactericide composition according to claim 13, wherein: The solvent includes one or a combination of water, alcohols, amides, nitriles, ketones, ethers and aromatic compounds.

16. The anti-foaming corrosion inhibitor bactericide composition according to claim 13, wherein: The auxiliary agent includes one or a combination of thiourea, thiazole, pyridine, piperidine, quinoline, 1,3,5-triazine and its derivatives and tributyl phosphate.

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