Foam inhibition type corrosion inhibition bactericide, preparation method thereof and foam inhibition type corrosion inhibition bactericide composition

Abstract

The invention provides a foam-inhibiting corrosion-inhibiting bactericide, a preparation method thereof and a foam-inhibiting corrosion-inhibiting bactericide composition. The foam-inhibiting corrosion-inhibiting bactericide comprises at least one of a first compound, a second compound and a third compound, the structure of the first compound is as shown in the specification, the structure of the second compound is as shown in the specification, the structure of the third compound is as shown in the specification, and the structure of the third compound is as shown in the specification. The preparation method of the foam inhibition type corrosion inhibition bactericide comprises the step of enabling polyether amine, aldehyde compounds and halogenated hydrocarbon to react to obtain the foam inhibition type corrosion inhibition bactericide. The foam inhibition type corrosion inhibition bactericide composition comprises 10%-50% of the foam inhibition type corrosion inhibition bactericide, 35%-85% of a solvent and 0%-15% of an auxiliary agent. The foam inhibition type corrosion inhibition bactericide and the foam inhibition type corrosion inhibition bactericide composition provided by the invention have relatively good corrosion inhibition capability, sterilization capability and foam inhibition capability.

Description

Technical Field

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

[0002] In the existing technology, pipelines in many oil and gas fields are corroded by carbon dioxide and microorganisms at the same time during production, which has brought severe challenges to safe production. At present, adding fungicides and corrosion inhibitors has become the mainstream method to inhibit corrosion and ensure pipeline safety. Existing fungicide and corrosion inhibitor products simply mix and prepare agents with corrosion inhibition and fungicide functions respectively, and the final fungicide, corrosion inhibition and foam inhibition effects of the products are poor. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide an anti-foaming corrosion inhibitor and a preparation method thereof, and an anti-foaming corrosion inhibitor composition. The present invention provides an anti-foaming corrosion inhibitor and an anti-foaming corrosion inhibitor composition having good corrosion inhibition ability, bactericidal ability and anti-foaming ability.

[0004] In order to achieve the above-mentioned object, the first aspect of the present invention provides a foam-inhibiting corrosion-inhibiting fungicide, which comprises at least one of a first compound, a second compound and a third compound;

[0005] Wherein, the structural formula of the first compound is as shown in Formula I:

[0006]

[0007] The structural formula of the second compound is shown in Formula II:

[0008]

[0009] The structural formula of the third compound is shown in Formula III:

[0010]

[0011] In Formula I, Formula II and Formula III, R 1 and R 2 Each is independently selected from one of C1-C10 straight or branched alkyl, C1-C10 alkoxy, C1-C10 straight or branched alkenyl, C1-C10 alkylthio, C3-C10 cycloalkyl, C6-C20 aryl and C4-C20 heterocyclic or heteroaryl; R 3is selected from 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 group or heteroaryl group; X is selected from a chlorine group, a bromine group, and an iodine group; 0<n≤3, n is a natural number, and m is a natural number greater than or equal to 1.

[0012] The second aspect of the present invention provides a method for preparing an antifoaming corrosion inhibitor bactericide, which comprises the following steps:

[0013] (1) mixing a polyetheramine and an aldehyde compound to obtain a first mixture;

[0014] (2) subjecting the first mixture to a first heating treatment to obtain an intermediate product;

[0015] (3) mixing the intermediate product and a halogenated hydrocarbon to obtain a second mixture;

[0016] (4) subjecting the second mixture to a second heating treatment to obtain the anti-foaming corrosion inhibitor bactericide.

[0017] The anti-foaming corrosion inhibitor bactericide provided by the present invention is a novel anti-foaming corrosion inhibitor bactericide formed by the reaction of polyetheramine, aldehyde compound and halogenated hydrocarbon. The anti-foaming corrosion inhibitor bactericide can be quickly adsorbed on the metal surface and the bacterial surface, and has good corrosion inhibition ability, bactericidal ability and anti-foaming ability.

[0018] 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).

[0019] In the above preparation method, preferably, in step (1), the polyetheramine includes polyetheramine D230.

[0020] In the above preparation method, preferably, in step (1), the aldehyde compound includes 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 includes one or a combination of formaldehyde, acetaldehyde, glyoxal, glutaraldehyde, and aromatic formaldehyde.

[0021] In the above preparation method, preferably, 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). More preferably, the organic acid catalyst comprises one or a combination of formic acid, acetic acid, propionic acid and trifluoromethanesulfonic acid.

[0022] In the above preparation method, preferably, in step (2), subjecting the first mixture to a first heating treatment specifically comprises: heating the first mixture at a temperature of 40° C. to 100° C. for 2 to 12 hours.

[0023] In the above preparation method, preferably, in step (3), the molar ratio of the halogenated hydrocarbon to the polyetheramine is 1:(1-2).

[0024] In the above preparation method, preferably, in step (3), the halogenated hydrocarbon includes one or a combination of halogenated olefins, halogenated alkanes and halogenated aromatic hydrocarbons. More preferably, the halogenated hydrocarbon includes one or a combination of alkyl chlorides, alkyl bromides, alkyl iodides, allyl chlorides, benzyl chlorides and benzyl bromides.

[0025] In the above preparation method, preferably, in step (4), subjecting the second mixture to a second heating treatment specifically comprises: heating the second mixture at a temperature of 40° C. to 100° C. for 2 to 24 hours.

[0026] 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.

[0027] 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 85% of solvent and 0% to 15% of additive.

[0028] 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%.

[0029] 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.

[0030] 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.

[0031] 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 and fungicide; or adding a solvent and an auxiliary agent to the anti-foaming corrosion inhibitor and fungicide to obtain the anti-foaming corrosion inhibitor and fungicide composition.

[0032] The anti-foaming corrosion inhibitor and anti-foaming corrosion inhibitor composition provided by the present invention can be rapidly adsorbed on metal surfaces and bacterial surfaces, have good corrosion inhibition, bactericidal and anti-foaming abilities, and can be used for protection against chemical corrosion and microbial corrosion in pipelines of oil and gas fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic flow chart of a method for preparing an antifoaming corrosion inhibitor bactericide provided in an embodiment of the present invention.

[0034] Figure 2 A schematic flow chart of a method for preparing an antifoaming corrosion inhibitor bactericide composition provided in an embodiment of the present invention.

[0035] Figure 3 A schematic flow chart of a method for preparing an antifoaming corrosion inhibitor bactericide provided in an embodiment of the present invention.

[0036] Figure 4 A schematic flow chart of a method for preparing an antifoaming corrosion inhibitor bactericide provided in an embodiment of the present invention.

[0037] Figure 5 This is the infrared spectrum of the anti-foaming corrosion inhibitor bactericide provided in Example 1.

[0038] Figure 6 This is the NMR spectrum of the anti-foaming corrosion inhibitor bactericide provided in Example 1.

[0039] Figure 7 This is the infrared spectrum of the anti-foaming corrosion inhibitor bactericide provided in Example 2.

[0040] Figure 8 This is the NMR spectrum of the anti-foaming corrosion inhibitor bactericide provided in Example 2.

[0041] Fig. 9 This is the infrared spectrum of the anti-foaming corrosion inhibitor bactericide provided in Example 3.

[0042] Fig.10 This is the NMR spectrum of the anti-foaming corrosion inhibitor bactericide provided in Example 3.

[0043] Fig.11 This is the infrared spectrum of the anti-foaming corrosion inhibitor bactericide provided in Example 4.

[0044] Fig.12 This is the NMR spectrum of the anti-foaming corrosion inhibitor bactericide provided in Example 4.

[0045] Fig.13 This is an optical image of the corrosion inhibitor provided in Comparative Example 7 after mixing with water.

[0046] Fig.14 This is an optical image of the corrosion inhibitor provided in Comparative Example 8 after mixing with water. DETAILED DESCRIPTION

[0047] In order to have a clearer understanding of the technical features, purposes and beneficial effects of the present invention, the technical solution of the present invention is now described in detail below, but it should not be construed as limiting the applicable scope of the present invention.

[0048] According to a specific embodiment of the present invention, a first aspect of the present invention provides a foam-inhibiting corrosion-inhibiting fungicide, which includes at least one of a first compound, a second compound and a third compound;

[0049] Wherein, the structural formula of the first compound is as shown in Formula I:

[0050]

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

[0052]

[0053] The structural formula of the third compound is shown in Formula III:

[0054]

[0055] In Formula I, Formula II and Formula III, R 1 and R 2 Each is independently selected from one of C1-C10 straight or branched alkyl, C1-C10 alkoxy, C1-C10 straight or branched alkenyl, C1-C10 alkylthio, C3-C10 cycloalkyl, C6-C20 aryl and C4-C20 heterocyclic or heteroaryl; R 3 is selected from 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 group or heteroaryl group; X is selected from a chlorine group, a bromine group, and an iodine group; 0<n≤3, n is a natural number, and m is a natural number greater than or equal to 1.

[0056] The anti-foaming corrosion-inhibiting fungicide of the present invention includes at least one of the first compound, the second compound and the third compound. For example, the anti-foaming corrosion-inhibiting fungicide may include only the first compound, or only the second compound, or only the third compound. In addition, the anti-foaming corrosion-inhibiting fungicide may also include a combination of any two of the above three compounds. For example, the anti-foaming corrosion-inhibiting fungicide 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-inhibiting fungicide may also include a combination of the first compound, the second compound and the third compound.

[0057] According to a specific embodiment of the present invention, in Formula I, Formula II and Formula III, R 1 and R 2 R is independently selected from a substituted or unsubstituted C1-C10 straight or branched alkyl group, a substituted or unsubstituted C1-C10 alkoxy group, a substituted or unsubstituted C1-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 group or heteroaryl group; 3 It 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 C1-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 group or heteroaryl group.

[0058] Specifically, R 1 , R 2 and R 3 Each of them can be independently selected from C1 to C10 straight chain alkyl groups, such as C1 straight chain alkyl (methyl), C2 straight chain alkyl (ethyl), C5 straight chain alkyl (pentyl), C6 straight chain alkyl (hexyl) and C10 straight chain alkyl (decyl). 1 , R 2 and R 3 They may also be independently selected from branched alkyl groups of C1 to C10, such as branched alkyl groups containing 5 carbon atoms, branched alkyl groups containing 6 carbon atoms, branched alkyl groups containing 10 carbon atoms, and the like.

[0059] R 1 , R 2 and R 3 They may also be independently selected from C1 to C10 alkoxy groups, such as C1 alkoxy (methoxy), C5 alkoxy (pentyloxy) and C10 alkoxy (decyloxy).

[0060] R 1 , R 2 and R 3 They may also be independently selected from C1-C10 straight chain or branched alkenyl groups, such as C2 straight chain alkenyl (ethylene), C3 straight chain alkenyl (propylene), C10 straight chain alkenyl (decene), and the like.

[0061] R 1 , R 2 and R 3They may also be independently selected from C1-C10 alkylthio groups, such as C1 alkylthio (methylthio), C5 alkylthio (pentylthio), C6 alkylthio and C10 alkylthio.

[0062] R 1 , R 2 and R 3 They may also be independently selected from C3-C10 cycloalkyl groups, such as C3 cycloalkyl, C4 cycloalkyl, C5 cycloalkyl, C6 cycloalkyl and C10 cycloalkyl.

[0063] R 1 , R 2 and R 3 They may also be independently selected from C6-C20 aryl groups, for example, aryl groups containing one benzene ring.

[0064] R 1 , R 2 and R 3 They may 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.

[0065] Furthermore, R 1 Preferably, R is selected from a C2-C10 straight-chain alkyl group, a C6-C20 aryl group, and a C1-C10 alkoxy group. 2 Preferably, R 3 It is preferably one selected from a single bond, a C2-C10 straight-chain alkyl group, and a C6-C20 aryl group.

[0066] Furthermore, R 1 Preferably, R 2 Preferably, R 3 It is preferably one selected from a single bond and a C1-C10 straight-chain alkyl group.

[0067] Specifically, R 1 , R 2 and R 3 Including but not limited to the types and structural formulas shown in Table 1 below.

[0068] Table 1

[0069]

[0070]

[0071]

[0072] 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:

[0073] (1) mixing a polyetheramine and an aldehyde compound to obtain a first mixture;

[0074] (2) subjecting the first mixture to a first heating treatment to obtain an intermediate product;

[0075] (3) mixing the intermediate product and a halogenated hydrocarbon to obtain a second mixture;

[0076] (4) subjecting the second mixture to a second heating treatment to obtain the anti-foaming corrosion inhibitor bactericide.

[0077] The preparation method of the anti-foaming corrosion inhibitor bactericide proposed by the invention mainly adopts polyether amine, aldehyde compound and halogenated hydrocarbon as raw materials.

[0078] Specifically, the preparation method first adds the polyetheramine and the aldehyde compound into a preparation container, and the two substances are added into the preparation container in a molar ratio of (1-2): (1-1.5). Specifically, the molar ratio of the polyetheramine and the aldehyde compound can be 1:1, 1.5:1, 2:1 or 2:1.5. After the addition, the polyetheramine and the aldehyde compound are mixed, for example, stirred to obtain a first mixture.

[0079] Afterwards, the first mixture is subjected to a first heating treatment, so that the polyetheramine and the aldehyde compound react to generate an intermediate product. The first heating treatment can increase the reaction rate of the polyetheramine and the aldehyde compound.

[0080] In some embodiments, the first heating treatment of the first mixture specifically includes: heating the first mixture at a temperature of 40°C to 100°C for 2 to 12 hours. By controlling the temperature with a minimum temperature of 40°C and a maximum temperature of 100°C, it is possible to ensure that the polyetheramine and the aldehyde compound react and increase the reaction rate of the two, and to avoid excessive temperature and damage to the structures of the two. In addition, the heating time of the first heating treatment is 2 to 12 hours, and the control of the heating time can ensure that the polyetheramine and the aldehyde compound react completely under the above temperature conditions.

[0081] Then, the halogenated hydrocarbon is added to the preparation container, and the halogenated hydrocarbon is added to the preparation container in a molar ratio of 1:(1-2) to the polyetheramine. After the addition, the halogenated hydrocarbon and the intermediate product are mixed, for example, stirred, to obtain a second mixture.

[0082] 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, and the reaction rate of the halogenated hydrocarbon and the intermediate product can be increased due to the second heating treatment.

[0083] In some embodiments, the second heating treatment of the second mixture specifically includes: heating the second mixture at a temperature of 40°C to 100°C for 2 to 24 hours. By controlling the temperature with a minimum temperature of 40°C and a maximum temperature of 100°C, it is possible to ensure that the intermediate product and the halogenated hydrocarbon react and increase the reaction rate of the two, and to avoid excessive temperature and damage to the structure of the two. In addition, the heating time of the second heating treatment is 2 to 24 hours, and the control of the heating time can ensure that the intermediate product and the halogenated hydrocarbon react completely under the above temperature conditions.

[0084] In some embodiments, step (1) further includes: 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 of 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 the organic acid catalyst is added to the preparation container, it is added in a ratio of 0.01: (1.5-2) of the molar ratio of the organic acid catalyst to the polyetheramine, which can ensure that the organic acid catalyst can play a catalytic role and avoid the excessive amount of the organic acid catalyst affecting the structure of the final compound.

[0085] Specifically, the organic acid catalyst can be added before or after the polyetheramine and aldehyde compound are added into the preparation container, as long as the polyether and aldehyde compound can react in an acidic environment and the reaction can be catalyzed.

[0086] In some embodiments, the organic acid catalyst includes one or a combination of formic acid, acetic acid, propionic acid, and trifluoromethanesulfonic acid.

[0087] In some embodiments, the polyetheramine includes polyetheramine D230 and the like.

[0088] In some embodiments, the aldehyde compound includes one or more combinations 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, etc.; 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, etc. Preferably, the aldehyde compound includes one or more combinations 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 numbers of aldehyde groups, the first mixture obtained by mixing the two can smoothly generate an intermediate product after the first heating treatment.

[0089] In some embodiments, the halogenated hydrocarbon includes one or more combinations of halogenated olefins, halogenated alkanes and halogenated aromatic hydrocarbons. Preferably, the halogenated alkanes include one or more combinations of chloroalkanes, iodoalkanes and bromoalkanes, etc., the halogenated olefins include chloropropylene, etc., 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 bromoalkanes, etc. Preferably, the halogenated hydrocarbons include one or more combinations of halogenated olefins 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 generate a foam-inhibiting corrosion inhibitor after a second heat treatment.

[0090] 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 carried out using conventional techniques in the art.

[0091] In 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, because the polyether amine, aldehyde compound and halogenated hydrocarbon of the present invention are used, the generated new 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.

[0092] 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.

[0093] According to a specific embodiment of the present invention, the fourth aspect of the present invention provides a foam-inhibiting corrosion-inhibiting bactericide composition, which includes: 10% to 50% of the above-mentioned foam-inhibiting corrosion-inhibiting bactericide, 35% to 85% of the solvent, and 0% to 15% of the auxiliary agent, based on the total weight of the foam-inhibiting corrosion-inhibiting bactericide composition as 100%. By controlling the weight proportion of the above-mentioned components, the ratio of each component is appropriate, ensuring that the foam-inhibiting corrosion-inhibiting bactericide composition can be quickly adsorbed on the metal surface and the bacterial surface, so that it has good corrosion inhibition, sterilization and foam inhibition effects.

[0094] 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 auxiliary agent to the anti-foaming corrosion inhibitor and fungicide to obtain the anti-foaming corrosion inhibitor and fungicide composition.

[0095] Specifically, after subjecting the second mixture to a second heating treatment to obtain an anti-foaming corrosion inhibitor, a solvent or a solvent and an auxiliary agent can be added to the anti-foaming corrosion inhibitor, and then the anti-foaming corrosion inhibitor composition can be obtained while cooling the anti-foaming corrosion inhibitor.

[0096] 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 auxiliary agent 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 auxiliary agents can also be added to the preparation container. Through the further addition of auxiliary agents, 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.

[0097] 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%.

[0098] 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-inhibiting bactericide, and the water is mixed with the anti-foaming corrosion-inhibiting bactericide to obtain an anti-foaming corrosion-inhibiting bactericide composition. For another example, alcohols can also be added to the preparation container, the alcohols cool the anti-foaming corrosion-inhibiting bactericide, and the alcohols are mixed with the anti-foaming corrosion-inhibiting bactericide to obtain an anti-foaming corrosion-inhibiting bactericide 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 above-mentioned other types of solvents can also be added to the preparation container.

[0099] In some embodiments, the auxiliary agent includes one or a combination of thiourea, thiazole, pyridine, piperidine, quinoline, 1,3,5-triazine and its derivatives, tributyl phosphate, etc.

[0100] In some embodiments, the anti-foaming corrosion-inhibiting bactericide composition comprises an anti-foaming corrosion-inhibiting bactericide and a solvent. The anti-foaming corrosion-inhibiting bactericide composition is obtained by mixing the solvent with the anti-foaming corrosion-inhibiting bactericide, so that the anti-foaming corrosion-inhibiting bactericide 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-inhibiting bactericide composition comprises an anti-foaming corrosion-inhibiting bactericide, a solvent and an auxiliary agent. By mixing the solvent, the auxiliary agent and the anti-foaming corrosion-inhibiting bactericide, the anti-foaming corrosion-inhibiting bactericide composition containing the auxiliary agent can also be used normally in harsh environments (i.e., environments with too high or too low temperatures).

[0101] For example, an anti-foaming corrosion-inhibiting fungicide composition of the present invention includes an anti-foaming corrosion-inhibiting fungicide, a solvent and an adjuvant. In terms of weight percentage, the anti-foaming corrosion-inhibiting fungicide accounts for 10%, the solvent accounts for 85%, and the adjuvant accounts for 5%. For another example, another anti-foaming corrosion-inhibiting fungicide composition of the present invention includes an anti-foaming corrosion-inhibiting fungicide, a solvent and an adjuvant. In terms of weight percentage, the anti-foaming corrosion-inhibiting fungicide accounts for 12%, the solvent accounts for 85%, and the adjuvant accounts for 3%. For another example, another anti-foaming corrosion-inhibiting fungicide composition of the present invention includes an anti-foaming corrosion-inhibiting fungicide, a solvent and an adjuvant. In terms of weight percentage, the anti-foaming corrosion-inhibiting fungicide accounts for 15%, the solvent accounts for 70%, and the adjuvant accounts for 15%.

[0102] See also Figure 1 In one embodiment of the present invention, a method for preparing an anti-foaming corrosion inhibitor bactericide is proposed, which comprises the following steps:

[0103] 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;

[0104] S104: performing a first heating treatment on the first mixture to obtain an intermediate product;

[0105] S106: adding a halogenated hydrocarbon into the preparation container, and mixing the halogenated hydrocarbon with the intermediate product to obtain a second mixture;

[0106] S108: performing a second heating treatment on the second mixture to obtain an anti-foaming corrosion inhibitor bactericide;

[0107] S110: Cooling the anti-foaming corrosion inhibitor bactericide to obtain a finished product of the anti-foaming corrosion inhibitor bactericide.

[0108] See also Figure 2 In one embodiment of the present invention, a method for preparing an antifoaming corrosion inhibitor bactericide composition is provided, which comprises the following steps:

[0109] 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;

[0110] S204: performing a first heating treatment on the first mixture to obtain an intermediate product;

[0111] S206: adding a halogenated hydrocarbon into the preparation container, and mixing the halogenated hydrocarbon with the intermediate product to obtain a second mixture;

[0112] S208: performing a second heating treatment on the second mixture to obtain an anti-foaming corrosion inhibitor bactericide;

[0113] S210: adding a solvent, or a solvent and an auxiliary agent into a preparation container to obtain an anti-foaming corrosion inhibitor bactericide composition.

[0114] See also Figure 3 In one embodiment of the present invention, a method for preparing an anti-foaming corrosion inhibitor bactericide is proposed, which comprises the following steps:

[0115] 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;

[0116] S304: heating the first mixture at a temperature of 40° C. to 100° C. for 2 to 12 hours to obtain an intermediate product;

[0117] S306: adding halogenated hydrocarbon into the preparation container, and mixing the halogenated hydrocarbon with the intermediate product to obtain a second mixture;

[0118] 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 fungicide;

[0119] S310: Cooling the anti-foaming corrosion inhibitor bactericide to obtain a finished product of the anti-foaming corrosion inhibitor bactericide.

[0120] See also Figure 4 In one embodiment of the present invention, a method for preparing an anti-foaming corrosion inhibitor fungicide is proposed, which comprises the following steps:

[0121] S402: adding the polyetheramine and the aldehyde compound into a preparation container at a molar ratio of (1-2):(1-1.5) and mixing;

[0122] S404: adding an organic acid catalyst into the preparation container to obtain a first mixture;

[0123] S406: performing a first heating treatment on the first mixture to obtain an intermediate product;

[0124] S408: adding a halogenated hydrocarbon into the preparation container, and mixing the halogenated hydrocarbon with the intermediate product to obtain a second mixture;

[0125] S410: performing a second heating treatment on the second mixture to obtain an anti-foaming corrosion inhibitor bactericide;

[0126] S412: Cooling the anti-foaming corrosion inhibitor bactericide to obtain a finished product of the anti-foaming corrosion inhibitor bactericide.

[0127] The technical scheme of the present invention is specifically described below through examples and comparative examples, but the present invention is not limited to these examples and can of course be implemented in various modifications within the scope of the gist of the present invention.

[0128] It should be noted that in the following embodiments, comparative examples and test examples, the operations involved without indicating the conditions were all carried out under conventional conditions or the conditions recommended by the manufacturer, and the raw materials used without indicating the manufacturer and specifications were all conventional products that can be obtained commercially.

[0129] Example 1

[0130] This embodiment provides a foam-inhibiting corrosion inhibitor and a foam-inhibiting corrosion inhibitor composition, and their preparation methods include the following steps:

[0131] (1) adding polyetheramine D230 and glyoxal in a molar ratio of 2:1 into a preparation container, and mixing to obtain a first mixture;

[0132] (2) heating the first mixture at 80° C. for 6 hours to obtain an intermediate product;

[0133] (3) adding butyl bromide into the preparation container, wherein the butyl bromide is added in a molar ratio of polyetheramine D230:glyoxal:butyl bromide of 2:1:1, and mixing to obtain a second mixture;

[0134] (4) heating the second mixture at 80° C. for 8 hours to obtain an anti-foaming corrosion inhibitor;

[0135] (5) Add water into the preparation container to obtain an anti-foaming corrosion inhibitor bactericide composition, which is recorded as No. 1.

[0136] Taking the total weight of the anti-foaming corrosion inhibitor bactericide composition as 100%, the content of the anti-foaming corrosion inhibitor bactericide is 35% and the content of water is 65%.

[0137] The anti-foaming corrosion inhibitor obtained in step (4) is subjected to infrared spectroscopy analysis and nuclear magnetic resonance analysis to obtain an infrared spectrum and a nuclear magnetic resonance spectrum of the anti-foaming corrosion inhibitor. Figure 5 and Figure 6 As shown. Figure 5 It can be seen that 3413cm -1 For NH 2 Characteristic peak of NH stretching vibration, 2969cm -1 、2872-2873cm -1 CH 2 The stretching vibration of CH, 1637 cm -1 It is the characteristic peak of C=N, 1618cm -1 For NH 2 Characteristic peak NH bending vibration, 1456cm -1 CH 2 The bending vibration of CH. Figure 6 It can be seen that 1 H NMR (D 2 O,400MHz)δ(ppm):0.75-1.13(t,CH 3 -,CH 3 -CH 2 -CH 2 ),1.98-2.06(t,-CH 2 -N + (-CH 2 -)-,-CH 2 -O-)2.98-3.40(m,-CH(-CH 3 )-CH 2 -O-,),4.95-5.05(m,-CH=N + (-CH 2 -)-). The chemical structural formula of the anti-foaming corrosion inhibitor is as follows:

[0138] Wherein m is the degree of polymerization, which is a natural number greater than or equal to 1.

[0139] Example 2

[0140] This embodiment provides a foam-inhibiting corrosion inhibitor and a foam-inhibiting corrosion inhibitor composition, and their preparation methods include the following steps:

[0141] (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;

[0142] (2) heating the first mixture at 40° C. for 6 hours to obtain an intermediate product;

[0143] (3) adding butyl bromide into the preparation container, wherein the butyl bromide is added in a molar ratio of polyetheramine D230:glyoxal:butyl bromide of 1.5:1:1, and mixing to obtain a second mixture;

[0144] (4) heating the second mixture at 100° C. for 8 hours to obtain an anti-foaming corrosion inhibitor;

[0145] (5) Add water into the preparation container to obtain an anti-foaming corrosion inhibitor bactericide composition, which is recorded as No. 2.

[0146] Taking the total weight of the anti-foaming corrosion inhibitor bactericide composition as 100%, the content of the anti-foaming corrosion inhibitor bactericide is 35% and the content of water is 65%.

[0147] The anti-foaming corrosion inhibitor obtained in step (4) is subjected to infrared spectroscopy analysis and nuclear magnetic resonance analysis to obtain an infrared spectrum and a nuclear magnetic resonance spectrum of the anti-foaming corrosion inhibitor. Figure 7 and Figure 8 As shown. Figure 7 It can be seen that 3414cm -1 For NH 2 Characteristic peak of NH stretching vibration, 2969cm -1 、2872cm -1 CH 2 The stretching vibration of CH, 1617 cm -1 It is the characteristic peak of C=N, 1582cm -1 For NH 2 Characteristic peak NH bending vibration, 1454cm -1 CH 2 The bending vibration of CH. Figure 8 It can be seen that 1 H NMR (D 2O,400MHz)δ(ppm):0.76-0.96(t,CH 3 -,CH 3 -CH 2 -CH 2 -),1.52-1.68(d,-CH 2 -O-), 1.98-2.06(d, -CH 2 -N + (-CH 2 -)-),2.97-3.43(m,-CH(-CH 3 )-CH 2 -O-), 4.75-5.10(m, -CH=N + (-CH 2 -)-). It is determined that the anti-foaming corrosion inhibitor is a mixture of three compounds having the following chemical structural formula:

[0148] Wherein m is the degree of polymerization, which is a natural number greater than or equal to 1;

[0149]

[0150] Example 3

[0151] This embodiment provides a foam-inhibiting corrosion inhibitor and a foam-inhibiting corrosion inhibitor composition, and their preparation methods include the following steps:

[0152] (1) adding polyetheramine D230 and glyoxal in a molar ratio of 1:1 into a preparation container, and mixing to obtain a first mixture;

[0153] (2) heating the first mixture at 100° C. for 6 hours to obtain an intermediate product;

[0154] (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;

[0155] (4) heating the second mixture at 100° C. for 8 hours to obtain an anti-foaming corrosion inhibitor;

[0156] (5) Add water into the preparation container to obtain an anti-foaming corrosion inhibitor bactericide composition, which is recorded as No. 3.

[0157] Taking the total weight of the anti-foaming corrosion inhibitor bactericide composition as 100%, the content of the anti-foaming corrosion inhibitor bactericide is 35% and the content of water is 65%.

[0158] The anti-foaming corrosion inhibitor obtained in step (4) is subjected to infrared spectroscopy analysis and nuclear magnetic resonance analysis to obtain an infrared spectrum and a nuclear magnetic resonance spectrum of the anti-foaming corrosion inhibitor. Fig. 9 and Fig.10 As shown. Fig. 9 It can be seen that 3413cm -1 For NH 2 Characteristic peak of NH stretching vibration, 2970cm -1 、2873cm -1 CH 2 The stretching vibration of CH, 1635 cm -1 Characteristic peaks of C=N and C=O, 1594cm -1 For NH 2 Characteristic peak NH bending vibration, 1456cm -1 CH 2 The bending vibration of CH. Fig.10 It can be seen that 1 H NMR (D 2 O,400MHz)δ(ppm):0.86-0.93(t,CH 3 -,CH 3 -CH 2 -CH 2 ),1.68-1.80(t,-CH 2 -N + (-CH 2 -)-,-CH 2 -O-), 2.97-3.43(m, -CH(-CH 3 )-CH 2 -O-,),4.81-4.97(m,-CH=N + (-CH 2 -)-). The chemical structural formula of the anti-foaming corrosion inhibitor is as follows:

[0159]

[0160] Example 4

[0161] This embodiment provides a foam-inhibiting corrosion inhibitor and a foam-inhibiting corrosion inhibitor composition, and their preparation methods include the following steps:

[0162] (1) adding polyetheramine D230 and glyoxal in a molar ratio of 1:1 into a preparation container, and mixing to obtain a first mixture;

[0163] (2) heating the first mixture at 70° C. for 6 hours to obtain an intermediate product;

[0164] (3) adding allyl chloride into the preparation container, wherein the allyl chloride is added in a molar ratio of polyetheramine D230:glyoxal:allyl chloride of 1:1:1, and mixing to obtain a second mixture;

[0165] (4) heating the second mixture at 100° C. for 8 hours to obtain an anti-foaming corrosion inhibitor;

[0166] (5) Add water into the preparation container to obtain an anti-foaming corrosion inhibitor bactericide composition, which is recorded as No. 4.

[0167] Taking the total weight of the anti-foaming corrosion inhibitor bactericide composition as 100%, the content of the anti-foaming corrosion inhibitor bactericide is 35% and the content of water is 65%.

[0168] The anti-foaming corrosion inhibitor obtained in step (4) is subjected to infrared spectroscopy analysis and nuclear magnetic resonance analysis to obtain an infrared spectrum and a nuclear magnetic resonance spectrum of the anti-foaming corrosion inhibitor. Fig.11 and Fig.12 As shown. Fig.11 It can be seen that 3415cm -1 For NH 2 Characteristic peak of NH stretching vibration, 2968cm -1 、2872cm -1 CH 2 The stretching vibration of CH, 1637 cm -1 Characteristic peaks of C=N and C=O, 1618cm -1 For NH 2 Characteristic peak NH bending vibration, 1556cm -1 CH 2 The bending vibration of CH. Fig.12 It can be seen that 1 H NMR (D 2 O,400MHz)δ(ppm):0.80-0.93(t,CH 3 -CH(CH 2 )-),1.70-1.75(m,-CH 2 -N + (-CH 2 -)-,-CH(-CH 3 )-CH 2 -),2.95-3.26(m,-CH 2 -O-), 4.85-5.08(m,-CH 2 -CH=CH 2 ),5.67-5.71(m,-CH=N + (-CH 2-)-). The chemical structural formula of the anti-foaming corrosion inhibitor is as follows:

[0169]

[0170] Example 5

[0171] This embodiment provides a foam-inhibiting corrosion inhibitor and a foam-inhibiting corrosion inhibitor composition, and their preparation methods include the following steps:

[0172] (1) adding polyetheramine D230 and glutaraldehyde in a molar ratio of 1:1 into a preparation container, and mixing to obtain a first mixture;

[0173] (2) heating the first mixture at 60° C. for 6 hours to obtain an intermediate product;

[0174] (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;

[0175] (4) heating the second mixture at 100° C. for 8 hours to obtain an anti-foaming corrosion inhibitor;

[0176] (5) Add ethanol into the preparation container to obtain an anti-foaming corrosion inhibitor bactericide composition, which is recorded as No. 5.

[0177] Taking the total weight of the anti-foaming corrosion inhibitor bactericide composition as 100%, the content of the anti-foaming corrosion inhibitor bactericide is 35%, and the content of ethanol is 65%.

[0178] The anti-foaming corrosion inhibitor obtained in step (4) was analyzed by infrared spectroscopy, and the result was: 3419 cm -1 For NH 2 Characteristic peak of NH stretching vibration, 2965cm -1 、2870cm -1 CH 2 The stretching vibration of CH, 1633 cm -1 Characteristic peaks of C=N and C=O, 1601cm -1 For NH 2 Characteristic peak NH bending vibration, 1436cm -1 CH 2 Bending vibration of CH. Nuclear magnetic resonance analysis was performed and the results were: 1 H NMR (D 2 O,400MHz)δ(ppm):0.82-0.94(t,CH 3 -CH(CH 2 )-),1.80-2.05(m,-CH2 -N + (-CH 2 -)-,-CH(-CH 3 )-CH 2 -),2.93-3.36(m,-CH 2 -O-,-CH 2 CH 2 CH 2 -),4.90-5.13(m,-CH 2 -CH=CH 2 ),5.64-5.75(m,-CH=N + (-CH 2 -)-). The chemical structural formula of the anti-foaming corrosion inhibitor is as follows:

[0179]

[0180] Example 6

[0181] This embodiment provides a foam-inhibiting corrosion inhibitor and a foam-inhibiting corrosion inhibitor composition, and their preparation methods include the following steps:

[0182] (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;

[0183] (2) heating the first mixture at 100° C. for 6 hours to obtain an intermediate product;

[0184] (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;

[0185] (4) heating the second mixture at 100° C. for 8 hours to obtain an anti-foaming corrosion inhibitor;

[0186] (5) Add butanol into the preparation container to obtain an antifoaming corrosion inhibitor bactericide composition, which is recorded as No. 6.

[0187] Taking the total weight of the anti-foaming corrosion inhibitor bactericide composition as 100%, the content of the anti-foaming corrosion inhibitor bactericide is 35%, and the content of butanol is 65%.

[0188] The anti-foaming corrosion inhibitor obtained in step (4) was subjected to infrared spectroscopy analysis, and the result was: 3414 cm -1 For NH 2 Characteristic peak of NH stretching vibration, 2943cm -1 、2871cm -1 CH2 The stretching vibration of CH, 1635 cm -1 Characteristic peaks of C=N and C=O, 1641cm -1 For NH 2 Characteristic peak NH bending vibration, 1456cm -1 CH 2 Bending vibration of CH. Nuclear magnetic resonance analysis was performed and the results were: 1 H NMR (D 2 O,400MHz)δ(ppm):0.80-0.96(t,CH 3 -CH(CH 2 )-),1.81-2.15(m,-CH 2 -N + (-CH 2 -)-,-CH(-CH 3 )-CH 2 -),2.93-3.42(m,-CH 2 -O-,-CH 2 CH 2 CH 2 -),4.92-5.15(m,-CH 2 -CH=CH 2 ),5.64-5.72(m,-CH=N + (-CH 2 -)-). It is determined that the anti-foaming corrosion inhibitor is a mixture of three compounds having the following chemical structural formula:

[0189] Wherein m is the degree of polymerization, which is a natural number greater than or equal to 1;

[0190]

[0191] Example 7

[0192] This embodiment provides a foam-inhibiting corrosion inhibitor and a foam-inhibiting corrosion inhibitor composition, and their preparation methods include the following steps:

[0193] (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;

[0194] (2) heating the first mixture at 100° C. for 8 hours to obtain an intermediate product;

[0195] (3) adding allyl chloride into 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;

[0196] (4) heating the second mixture at 100° C. for 8 hours to obtain an anti-foaming corrosion inhibitor;

[0197] (5) Add ethanol into the preparation container to obtain an anti-foaming corrosion inhibitor bactericide composition, which is recorded as No. 7.

[0198] Taking the total weight of the anti-foaming corrosion inhibitor bactericide composition as 100%, the content of the anti-foaming corrosion inhibitor bactericide is 35%, and the content of ethanol is 65%.

[0199] The anti-foaming corrosion inhibitor obtained in step (4) was subjected to infrared spectroscopy analysis, and the result was: 3413 cm -1 For NH 2 Characteristic peak of NH stretching vibration, 2970cm -1 、2875cm -1 CH 2 The stretching vibration of CH, 1642 cm -1 It is the characteristic peak of C=N, 1621cm -1 For NH 2 Characteristic peak NH bending vibration, 1456cm -1 CH 2 Bending vibration of CH, 1635, 1617, 1474, 1454 cm -1 is the skeleton vibration of the benzene ring. The results of nuclear magnetic resonance analysis are: 1 H NMR (D 2 O,400MHz)δ(ppm):0.80-0.93(t,CH 3 -CH(CH 2 )-),1.81-2.15(m,-CH 2 -N + (-CH 2 -)-,-CH(-CH 3 )-CH 2 -),2.95-3.28(m,-CH 2 -O-), 4.98-5.15(m,-CH 2 -CH=CH 2 ),5.67-5.71(m,-CH=N + (-CH 2 -)-), 6.78-7.86 (m, -CH=CH-). The anti-foaming corrosion inhibitor was determined to be a mixture of two compounds with the following chemical formula:

[0200]

[0201] Example 8

[0202] This embodiment provides a foam-inhibiting corrosion inhibitor and a foam-inhibiting corrosion inhibitor composition, and their preparation methods include the following steps:

[0203] (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;

[0204] (2) heating the first mixture at 100° C. for 8 hours to obtain an intermediate product;

[0205] (3) adding allyl chloride into 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;

[0206] (4) heating the second mixture at 100° C. for 8 hours to obtain an anti-foaming corrosion inhibitor;

[0207] (5) Add ethanol into 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.

[0208] Taking the total weight of the anti-foaming corrosion inhibitor bactericide composition as 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 is 3%.

[0209] Comparative Example 1

[0210] This comparative example provides a corrosion inhibitor and a corrosion inhibitor composition, and their preparation methods include the following steps:

[0211] (1) adding polyetheramine D600 and glyoxal in a molar ratio of 2:1 into a preparation container, and mixing to obtain a first mixture;

[0212] (2) heating the first mixture at 80° C. for 6 hours to obtain an intermediate product;

[0213] (3) adding butyl bromide into the preparation container, wherein the butyl bromide is added in a molar ratio of polyetheramine D600:glyoxal:butyl bromide of 2:1:1, and mixing to obtain a second mixture;

[0214] (4) heating the second mixture at 80° C. for 8 hours to obtain a corrosion inhibitor;

[0215] (5) Add water into the preparation container to obtain a corrosion inhibitor composition, which is recorded as Type A.

[0216] 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%.

[0217] Comparative Example 2

[0218] This comparative example provides a corrosion inhibitor composition, which is recorded as type B.

[0219] The corrosion inhibitor composition is a water solution of polyethyleneimine (molecular weight 600), with the total weight being 100%, the content of polyethyleneimine being 35% and the content of water being 65%.

[0220] Comparative Example 3

[0221] This comparative example provides a corrosion inhibitor and a corrosion inhibitor composition, and their preparation methods include the following steps:

[0222] (1) adding polyetheramine D400 and glyoxal in a molar ratio of 2:1 into a preparation container, and mixing to obtain a first mixture;

[0223] (2) heating the first mixture at 80° C. for 6 hours to obtain an intermediate product;

[0224] (3) adding butyl bromide into the preparation container, wherein the butyl bromide is added in a molar ratio of polyetheramine D400:glyoxal:butyl bromide of 2:1:1, and mixing to obtain a second mixture;

[0225] (4) heating the second mixture at 80° C. for 8 hours to obtain a corrosion inhibitor;

[0226] (5) Add water into the preparation container to obtain a corrosion inhibitor composition, which is recorded as Type C.

[0227] 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%.

[0228] Comparative Example 4

[0229] This comparative example provides a corrosion inhibitor and a corrosion inhibitor composition, and their preparation methods include the following steps:

[0230] (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;

[0231] (2) heating the first mixture at 80° C. for 6 hours to obtain a corrosion inhibitor;

[0232] (3) Add water into the preparation container to obtain a corrosion inhibitor composition, which is recorded as Type D.

[0233] 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%.

[0234] Comparative Example 5

[0235] This comparative example provides a corrosion inhibitor composition, which is recorded as type E.

[0236] The corrosion inhibitor composition is an aqueous solution of polyetheramine D230, wherein the content of polyetheramine D230 is 35% and the content of water is 65% based on the total weight of the aqueous solution being 100%.

[0237] Comparative Example 6

[0238] This comparative example provides a corrosion inhibitor and a corrosion inhibitor composition, and their preparation methods include the following steps:

[0239] (1) adding aniline and glyoxal in a molar ratio of 2:1 into a preparation container, and mixing to obtain a first mixture;

[0240] (2) heating the first mixture at 80° C. for 6 hours to obtain an intermediate product;

[0241] (3) adding butyl bromide into the preparation container, wherein the butyl bromide is added in a molar ratio of aniline:glyoxal:butyl bromide of 2:1:1, and mixing to obtain a second mixture;

[0242] (4) heating the second mixture at 80° C. for 8 hours to obtain a corrosion inhibitor;

[0243] (5) Add water into the preparation container to obtain a corrosion inhibitor composition, which is designated as Type F.

[0244] 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.

[0245] Comparative Example 7

[0246] This comparative example provides a corrosion inhibitor, and its preparation method comprises the following steps:

[0247] (1) adding tetraethylenepentamine and benzaldehyde in a molar ratio of 2:1 into a preparation container, and mixing to obtain a first mixture;

[0248] (2) heating the first mixture at 80° C. for 6 hours to obtain an intermediate product;

[0249] (3) adding butyl bromide into the preparation container, wherein the butyl bromide is added in a molar ratio of tetraethylenepentamine:benzaldehyde:butyl bromide of 2:1:1, and mixing to obtain a second mixture;

[0250] (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.

[0251] After the G type corrosion inhibitor is mixed with water, Fig.13 As shown, it was found that the G-type corrosion inhibitor was insoluble in water.

[0252] Comparative Example 8

[0253] This comparative example provides a corrosion inhibitor, denoted as type H, 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.).

[0254] After the H-type corrosion inhibitor is mixed with water, Fig.14 As shown, it was found that the H-type corrosion inhibitor was insoluble in water.

[0255] Test Example 1

[0256] The corrosion inhibition performance of the antifoaming corrosion inhibition and fungicide compositions No. 1 to No. 8 provided in the above examples and the corrosion inhibition performance of the corrosion inhibition compositions A to E provided in the above comparative examples were tested. It should be noted that since the water solubility of the corrosion inhibitors F, G and H is poor, the corrosion inhibition performance of these corrosion inhibitors is not tested.

[0257] The specific test process is: No. 1 to No. 8 anti-foaming corrosion inhibitor and fungicide compositions and type A to type E corrosion inhibitor compositions are respectively subjected to corrosion tests on 5% sodium chloride water samples containing 500ppm of carbon dioxide. The concentration of the anti-foaming corrosion inhibitor and fungicide composition and the corrosion inhibitor composition is 100mg / L, the corroded material is L245 (pipeline steel pipe), the temperature environment is 40°C, the pressure environment is normal pressure, and the oxygen environment is anaerobic. After being placed in the above environment for 72 hours, 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):

[0258]

[0259] Where:

[0260] V c —Uniform corrosion rate, in millimeters per year (mm / a)

[0261] m—weight loss of hanging piece, in grams (g);

[0262] s—Exposed area of ​​the coupon, in square centimeters (cm 2 );

[0263] t—experimental time, in hours (h);

[0264] ρ—relative density of the coupon, in grams per cubic centimeter (g / cm 3 ).

[0265] The corrosion rates of samples using No. 1 to No. 8 antifoaming corrosion inhibitor and fungicide compositions, type A to type E corrosion inhibitor compositions, and blank samples were statistically analyzed, as shown in Table 2.

[0266] Table 2

[0267]

[0268]

[0269] It can be seen from Table 2 that the corrosion rates of the anti-foaming corrosion inhibitor bactericide compositions No. 1 to No. 7 provided in the embodiments of the present invention are below 0.076 mm / a, and the corrosion rate of the anti-foaming corrosion inhibitor bactericide composition No. 8 is higher than 0.076 mm / a, but is also significantly lower than the A-E type corrosion inhibitor compositions provided in the comparative examples. Therefore, the anti-foaming corrosion inhibitor bactericide composition of the present invention has good corrosion inhibition performance.

[0270] Test Example 2

[0271] The antifoaming corrosion inhibitor bactericide compositions No. 1 to No. 8 provided in the above examples were tested for their bactericidal performance. It should be noted that since the corrosion inhibitors provided in the above comparative examples had poor corrosion inhibition effects, they were not tested for their bactericidal performance.

[0272] The specific test process is to use No. 1 to No. 8 anti-foaming corrosion inhibitor bactericide compositions to perform sterilization tests on water samples containing sulfate-reducing bacteria. The use concentration of the anti-foaming corrosion inhibitor bactericide composition and the corrosion inhibitor composition is 100 mg / L. After the water sample containing sulfate-reducing bacteria is added with the anti-foaming corrosion inhibitor bactericide composition or the corrosion inhibitor composition, it 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):

[0273]

[0274] Where:

[0275] X-bactericidal rate, %;

[0276] a 2 - Bacterial count after sterilization, counts / mL;

[0277] a 1 - Number of blank bacteria, cells / mL.

[0278] The sterilization rates of the samples using No. 1 to No. 8 antifoaming corrosion inhibitor bactericide compositions and the blank samples were statistically analyzed, as shown in Table 3.

[0279] Table 3

[0280] Drug concentration, ppm The number of sulfate-reducing bacteria, Sterilization rate, % none — <![CDATA[110.0×10 3 ]]> — No. 1 100 0 100 No. 2 100 0 100 No.3 100 0 100 No. 4 100 0 100 No. 5 100 10 99.9 No. 6 100 10 99.9 No.7 100 25 99.9 No. 8 100 0 100

[0281] It can be seen from Table 3 above that the bactericidal rates of the anti-foaming corrosion inhibitor bactericide compositions No. 1 to No. 8 provided in the embodiments of the present invention are above 99.9%, and the anti-foaming corrosion inhibitor bactericide compositions of the present invention have good bactericidal properties.

[0282] Test Example 3

[0283] The anti-foaming performance of the anti-foaming corrosion-inhibiting bactericide compositions No. 1 to No. 8 provided in the above examples was tested. It should be noted that since the corrosion inhibitors provided in the above comparative examples have poor corrosion inhibition effects, they were not tested for anti-foaming performance.

[0284] The specific test process is: measure 200ml of water sample from the production site into a stirring cup, stir it with a high-speed stirrer at a speed of 4000r / min for 1min, then use a pipette (or pipette gun) to add 1ml of No. 1 to No. 8 anti-foaming corrosion inhibitor bactericide composition into the stirring cup, stir it at the same speed for another 1min, and immediately introduce it into a 250ml measuring cylinder after the stirring is completed and press the stopwatch to start the time, let it stand and observe, and record the volume of the upper foam at 3min. Repeat for more than 3 times, take the average value of the multiple measured data, and get the foam volume of the second foam.

[0285] The re-foaming volumes of the samples using No. 1 to No. 8 anti-foaming corrosion inhibitor bactericide compositions and the blank samples were statistically analyzed, as shown in Table 4.

[0286] Table 4

[0287]

[0288]

[0289] It can be seen from Table 4 that the re-foaming volume of the anti-foaming corrosion inhibitor bactericide compositions No. 1 to No. 8 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.

[0290] 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 protection scope 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, R 1 and R 2 Each is independently selected from one of C1-C10 straight or branched alkyl, C1-C10 alkoxy, C1-C10 straight or branched alkenyl, C1-C10 alkylthio, C3-C10 cycloalkyl, C6-C20 aryl and C4-C20 heterocyclic or heteroaryl; R 3 is selected from 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 group or heteroaryl group; X is selected from a chlorine group, a bromine group, and an iodine group; 0<n≤3, n is a natural number, and m is a natural number greater than or equal to 1.

2. A method for preparing an antifoaming corrosion inhibitor bactericide, The following steps are involved: (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, in, 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, in, In step (1), the polyetheramine includes polyetheramine D230.

5. The method for preparing the anti-foaming corrosion inhibitor bactericide according to claim 2, in, 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, in, 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); Preferably, the organic acid catalyst comprises one or a combination of formic acid, acetic acid, propionic acid and trifluoromethanesulfonic acid.

7. The method for preparing the anti-foaming corrosion inhibitor bactericide according to claim 2, in, 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.

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

9. The method for preparing the anti-foaming corrosion inhibitor bactericide according to claim 2, in, In step (3), the halogenated hydrocarbon includes one or a combination of halogenated olefins, halogenated alkanes and halogenated aromatic hydrocarbons; Preferably, the halogenated hydrocarbon includes one or a combination of alkyl chloride, alkyl bromide, alkyl iodide, allyl chloride, benzyl chloride and benzyl bromide.

10. The method for preparing the anti-foaming corrosion inhibitor bactericide according to claim 2, in, 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.

11. The anti-foaming corrosion inhibitor bactericide prepared by the method for preparing the anti-foaming corrosion inhibitor bactericide according to any one of claims 2 to 10.

12. A foam-inhibiting corrosion-inhibiting bactericide composition, wherein the total weight of the foam-inhibiting corrosion-inhibiting bactericide composition is 100%, include: 10% to 50% of the anti-foaming corrosion inhibitor bactericide according to claim 1 or claim 11, 35% to 85% of the solvent and 0% to 15% of the auxiliary agent.

13. The anti-foaming corrosion inhibitor bactericide composition according to claim 12, in, 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%.

14. The anti-foaming corrosion inhibitor bactericide composition according to claim 12, in, The solvent includes one or a combination of water, alcohols, amides, nitriles, ketones, ethers and aromatic compounds.

15. The anti-foaming corrosion inhibitor bactericide composition according to claim 12, in, 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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