CN114276842A - Ethanol gasoline polymetallic organic acid corrosion inhibitor and preparation method thereof - Google Patents
Ethanol gasoline polymetallic organic acid corrosion inhibitor and preparation method thereof Download PDFInfo
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- 238000005260 corrosion Methods 0.000 title claims abstract description 147
- 230000007797 corrosion Effects 0.000 title claims abstract description 145
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 121
- 239000003112 inhibitor Substances 0.000 title claims abstract description 97
- 239000003502 gasoline Substances 0.000 title claims abstract description 73
- 150000007524 organic acids Chemical class 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- -1 acetylene alcohol Chemical compound 0.000 claims abstract description 26
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims abstract description 24
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000002904 solvent Substances 0.000 claims abstract description 16
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 33
- QDCPNGVVOWVKJG-VAWYXSNFSA-N 2-[(e)-dodec-1-enyl]butanedioic acid Chemical compound CCCCCCCCCC\C=C\C(C(O)=O)CC(O)=O QDCPNGVVOWVKJG-VAWYXSNFSA-N 0.000 claims description 25
- OYHQOLUKZRVURQ-HZJYTTRNSA-N Linoleic acid Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC(O)=O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 claims description 18
- OYHQOLUKZRVURQ-IXWMQOLASA-N linoleic acid Natural products CCCCC\C=C/C\C=C\CCCCCCCC(O)=O OYHQOLUKZRVURQ-IXWMQOLASA-N 0.000 claims description 18
- 235000020778 linoleic acid Nutrition 0.000 claims description 18
- BWDBEAQIHAEVLV-UHFFFAOYSA-N 6-methylheptan-1-ol Chemical compound CC(C)CCCCCO BWDBEAQIHAEVLV-UHFFFAOYSA-N 0.000 claims description 15
- 239000003350 kerosene Substances 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 8
- OYHQOLUKZRVURQ-NTGFUMLPSA-N (9Z,12Z)-9,10,12,13-tetratritiooctadeca-9,12-dienoic acid Chemical compound C(CCCCCCC\C(=C(/C\C(=C(/CCCCC)\[3H])\[3H])\[3H])\[3H])(=O)O OYHQOLUKZRVURQ-NTGFUMLPSA-N 0.000 claims description 6
- 235000005985 organic acids Nutrition 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 26
- 239000002184 metal Substances 0.000 abstract description 25
- 229910000831 Steel Inorganic materials 0.000 abstract description 21
- 239000010959 steel Substances 0.000 abstract description 21
- 230000005764 inhibitory process Effects 0.000 abstract description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 17
- 229910052802 copper Inorganic materials 0.000 abstract description 17
- 239000010949 copper Substances 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 16
- 229910001369 Brass Inorganic materials 0.000 abstract description 13
- 229910052782 aluminium Inorganic materials 0.000 abstract description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 13
- 239000010951 brass Substances 0.000 abstract description 13
- 239000000446 fuel Substances 0.000 abstract description 13
- 239000003921 oil Substances 0.000 abstract description 10
- 238000003860 storage Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 6
- 238000002474 experimental method Methods 0.000 abstract description 5
- 239000000295 fuel oil Substances 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 239000000203 mixture Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 238000009472 formulation Methods 0.000 description 5
- 239000003208 petroleum Substances 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000009972 noncorrosive effect Effects 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- NXAYYSHEARRBLR-UHFFFAOYSA-N 7-(3,5-diethyl-1-methylpyrazol-4-yl)-1-(2-morpholin-4-ylethyl)-3-(3-naphthalen-1-yloxypropyl)indole-2-carboxylic acid Chemical compound CCc1nn(C)c(CC)c1-c1cccc2c(CCCOc3cccc4ccccc34)c(C(O)=O)n(CCN3CCOCC3)c12 NXAYYSHEARRBLR-UHFFFAOYSA-N 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 239000013556 antirust agent Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 238000001833 catalytic reforming Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 150000001924 cycloalkanes Chemical class 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003254 gasoline additive Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 125000002636 imidazolinyl group Chemical group 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010517 secondary reaction Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- AXOIZCJOOAYSMI-UHFFFAOYSA-N succinylcholine Chemical compound C[N+](C)(C)CCOC(=O)CCC(=O)OCC[N+](C)(C)C AXOIZCJOOAYSMI-UHFFFAOYSA-N 0.000 description 1
- 229940032712 succinylcholine Drugs 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Liquid Carbonaceous Fuels (AREA)
Abstract
The invention relates to an ethanol gasoline polymetallic organic acid corrosion inhibitor and a preparation method thereof, wherein the ethanol gasoline polymetallic organic acid corrosion inhibitor comprises the following components in parts by mass: 15-25 parts of methylbenzotriazole, 17-30 parts of organic acid, 5-8 parts of acetylene alcohol and 32-63 parts of solvent. The ethanol gasoline polymetallic organic acid corrosion inhibitor has good corrosion inhibition effect on common metal brass, red copper, aluminum and steel in oil ways such as engines, fuel oil storage and delivery systems and the like, and can ensure that the corrosivity of fuel gasoline can reach the copper sheet corrosion level below 1 by adding 200ppm under the condition of extremely small using amount; in a 21-day sheet metal corrosion experiment, the corrosion inhibition rates of brass, red copper, aluminum and 20# steel are 97%, 96%, 95% and 94%, respectively. The components of the corrosion inhibitor are ashless, have no corrosivity, have few component types, are easy to obtain and obtain raw materials, have low cost and bring great convenience for production preparation and use.
Description
Technical Field
The invention relates to the field of gasoline additives, in particular to a polymetallic organic acid corrosion inhibitor for ethanol gasoline and a preparation method thereof.
Background
As one of the main objects of geological exploration, petroleum is a viscous, dark brown liquid called "industrial blood" whose main component is a mixture of various alkanes, cycloalkanes, and aromatics. Petroleum is mainly used to refine fuel oil and gasoline. The gasoline is prepared by refining different gasoline components such as straight run gasoline component, catalytic cracking gasoline component, catalytic reforming gasoline component and the like obtained by refining petroleum and then blending the refined gasoline components with the high octane value component, and is mainly used as fuel of an automobile ignition type internal combustion engine. Due to the relative shortage of oil and gas resources in China, the active search of new alternative energy sources for vehicles becomes one of the main ways for relieving the contradiction between supply and demand of petroleum. Ethanol is used as a biomass energy source and belongs to renewable resources. Ethanol gasoline is one of important products for solving the problems of energy source replacement and pollution as a novel clean fuel. The ethanol gasoline inevitably introduces byproducts of ethanol production, such as acetic acid, halogen ions, water and the like, and alcohols and other substances enhance the corrosion of oil products to metals, aggravate the corrosion problem to oil tanks, oil paths, cylinders and the like and shorten the service life of the ethanol gasoline. Therefore, to fully utilize ethanol gasoline, the problem of corrosion resistance of ethanol gasoline must be solved. At present, the corrosion problem of the ethanol gasoline is reduced or avoided by adding a corrosion inhibitor into the ethanol gasoline in general in the industry. However, different corrosion inhibitors have different protective effects on the engine and the metal in the oil path. Some corrosion inhibitors contain metal elements, which can generate ash, cause engine wear and three-way catalyst blockage; some corrosion inhibitors are difficult to prepare, and the preparation process is relatively complicated; some components are complex and have high cost.
Patent CN104830386 discloses a methanol gasoline corrosion inhibitor which has a simple formula and can effectively reduce corrosivity, but strongly alkaline sodium hydroxide and polyethylene diamine are used in the formula, the two components have certain corrosivity, and metal ion sodium introduced in the formula generates ash after combustion.
Patent CN106459811 discloses a corrosion inhibitor for fuel and lubricant, which shows better effect in experiments, but the formula of the corrosion inhibitor needs to perform secondary reaction on raw materials, the preparation process is more complicated, and the preparation difficulty and cost are increased.
Patent US5024677 discloses an anti-corrosion agent for ethanol gasoline, which consists of imidazole compounds with anti-corrosion properties and polyamine compounds containing alkylphenol succinylcholine, and which can reduce the corrosion problem of ethanol gasoline, but has high nitrogen content, generates nitrogen oxides during the use, pollutes the environment, and the availability of component efficacy compounds is not easy.
CN 111662755 discloses a multi-metal corrosion inhibitor for fuel gasoline and a preparation method thereof, wherein, the ashless rust inhibitor of heptadecenyl imidazoline amine salt contained in the formula of the corrosion inhibitor is easy to absorb water and decompose, imidazoline rings in the structure are easy to open, the product is unstable, the product is easy to lose efficacy, and the reaction preparation is complex and the price is high.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide the ethanol gasoline polymetallic organic acid corrosion inhibitor which has good corrosion inhibition effect on red copper, brass, aluminum and steel, does not cause ash influence on a fuel storage and delivery system and an engine, has no corrosiveness and is low in cost, and the preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
according to a first aspect of the invention, the invention provides a polymetallic organic acid corrosion inhibitor for ethanol gasoline, which comprises the following components in parts by mass: 15-25 parts of methylbenzotriazole, 17-30 parts of organic acid, 5-8 parts of acetylene alcohol and 32-63 parts of solvent.
Further, the ethanol gasoline polymetallic organic acid corrosion inhibitor comprises the following components in parts by mass: 15-25 parts of methylbenzotriazole, 17-30 parts of organic acid, 5-8 parts of acetylene alcohol and 45-50 parts of solvent.
Further, the organic acids include dodecenylsuccinic acid and dimerized linoleic acid.
Further, the organic acid comprises the following components in parts by weight: dodecenylsuccinic acid accounting for 10-15 parts of the total mass of the corrosion inhibitor and dimerized linoleic acid accounting for 7-15 parts of the total mass of the corrosion inhibitor.
Further, the solvent includes: isooctyl alcohol, N-dimethylformamide and kerosene.
Further, the solvent comprises the following components in parts by weight: isooctanol accounting for 15-25 parts of the total mass part of the corrosion inhibitor, N-dimethylformamide accounting for 7-15 parts of the total mass part of the corrosion inhibitor and kerosene accounting for 10-23 parts of the total mass part of the corrosion inhibitor.
Further, the ethanol gasoline polymetallic organic acid corrosion inhibitor is characterized by comprising the following components in parts by mass: 15-25 parts of methylbenzotriazole, 10-15 parts of dodecenylsuccinic acid, 7-15 parts of dimerized linoleic acid, 5-8 parts of acetylene alcohol, 15-25 parts of isooctyl alcohol, 7-15 parts of N, N-dimethylformamide and 10-23 parts of kerosene.
According to a second aspect of the invention, the invention provides a preparation method of an ethanol gasoline polymetallic organic acid corrosion inhibitor, which comprises the following steps: feeding the components of the ethanol gasoline polymetallic organic acid corrosion inhibitor into a container according to the mass part ratio, adding isooctanol and N, N-dimethylformamide into the container, then sequentially adding and dissolving methylbenzotriazole and acetylene alcohol, fully stirring and dissolving, then sequentially adding kerosene, dodecenyl succinic acid and dimeric linoleic acid, stirring uniformly, and filtering to obtain the ethanol gasoline polymetallic organic acid corrosion inhibitor.
The ethanol gasoline polymetallic organic acid corrosion inhibitor and the preparation method thereof have the following beneficial effects: the ethanol gasoline polymetallic organic acid corrosion inhibitor has good corrosion inhibition effect on common metal brass, red copper, aluminum and steel in oil ways such as engines, fuel oil storage and delivery systems and the like, and comprises the following components: the methylbenzotriazole can mainly inhibit the corrosion to red copper and brass; the dodecenylsuccinic acid and the dimerized linoleic acid can mainly inhibit the corrosion to aluminum and iron, and because steel mainly consists of iron and carbon, the dodecenylsuccinic acid and the dimerized linoleic acid also have a certain corrosion inhibition effect on the steel; acetylene alcohols primarily inhibit corrosion of the steel. The organic acid and the acetylene alcohol form a certain synergistic effect, and the combined use can effectively slow down the corrosion to steel. The effective components contained in the corrosion inhibitor can correspondingly form a protective film on the surface of the metal, thereby effectively preventing the corrosive components in the ethanol gasoline from corroding the metal. Under the condition of extremely small dosage, the corrosion inhibitor can ensure that the corrosivity of fuel gasoline including ethanol gasoline reaches the copper sheet corrosion level below 1 by adding 200 ppm; in a 21-day sheet metal corrosion experiment, the corrosion inhibition rates of brass, red copper, aluminum and 20# steel are 97%, 96%, 95% and 94%, respectively. The components used in the corrosion inhibitor are all ashless, so that ash influence on a fuel storage and delivery system and an engine is avoided in the using process, and the components are non-corrosive; the corrosion inhibitor of the invention has few components, easily obtained raw materials, low cost and great convenience for production, preparation and use.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention provides an organic acid corrosion inhibitor for ethanol gasoline polymetallic and a preparation method thereof. The corrosion inhibitor comprises the following components in parts by weight: 15-25 parts of methylbenzotriazole, 17-30 parts of organic acid, 5-8 parts of acetylene alcohol and 32-63 parts of solvent; the organic acid corrosion inhibitor for ethanol gasoline polymetallic is obtained after the components are mixed evenly in sequence. The corrosion inhibitor is applied to gasoline, has good corrosion inhibition effect on red copper, brass, aluminum and steel in an oil way, and particularly has good corrosion inhibition effect even if the gasoline is added with methanol and ethanol. The components used in the corrosion inhibitor are ashless formulations, so that ash influence on a fuel storage and delivery system and an engine is avoided; meanwhile, the added components have no corrosiveness, the variety of the components is few, the cost of the raw materials is low, and great convenience is brought to production, preparation and use.
The invention is described in further detail below:
the invention provides a polymetallic organic acid corrosion inhibitor for ethanol gasoline, which comprises the following components in parts by mass: 15-25 parts of methylbenzotriazole, 17-30 parts of organic acid, 5-8 parts of acetylene alcohol and 32-63 parts of solvent.
Further, the ethanol gasoline polymetallic organic acid corrosion inhibitor comprises the following components in parts by mass: 15-25 parts of methylbenzotriazole, 17-30 parts of organic acid, 5-8 parts of acetylene alcohol and 50 parts of solvent.
Further, the organic acids include dodecenylsuccinic acid and dimerized linoleic acid. Further, dodecenylsuccinic acid has a code number of T746 in the Chinese market, and all products of the code number can be used in the formulation of the present invention without significantly affecting the utility of the formulation.
Further, the organic acid comprises the following components in parts by weight: dodecenylsuccinic acid accounting for 10-15 parts of the total mass of the corrosion inhibitor and dimerized linoleic acid accounting for 7-15 parts of the total mass of the corrosion inhibitor.
Further, the ethanol gasoline polymetallic organic acid corrosion inhibitor comprises the following components in parts by mass: 15-25 parts of methylbenzotriazole, 10-15 parts of dodecenylsuccinic acid, 7-15 parts of dimerized linoleic acid, 5-8 parts of acetylene alcohol and 32-63 parts of solvent.
Further, the solvent includes isooctanol, N-dimethylformamide and kerosene.
Further, the solvent comprises the following components in parts by weight: isooctanol accounting for 15-25 parts of the total mass part of the corrosion inhibitor, N-dimethylformamide accounting for 7-15 parts of the total mass part of the corrosion inhibitor and kerosene accounting for 10-23 parts of the total mass part of the corrosion inhibitor. Wherein isooctyl alcohol, N-dimethylformamide (DMF for short) and kerosene are mainly used as solvents and auxiliary agents in the corrosion inhibitor of the invention, and the total mass portion of the three components accounts for 50 portions of the total mass portion of the corrosion inhibitor within the range of the mass portion ratio of the isooctyl alcohol, the N, N-dimethylformamide (DMF for short) and the kerosene.
Further, the ethanol gasoline polymetallic organic acid corrosion inhibitor provided by the invention comprises the following components in parts by mass: 22 parts of methylbenzotriazole, 12 parts of dodecenylsuccinic acid, 11 parts of dimerized linoleic acid, 5 parts of acetylene alcohol, 20 parts of isooctyl alcohol, 15 parts of N, N-dimethylformamide and 15 parts of kerosene.
The invention also provides a preparation method of the ethanol gasoline polymetallic organic acid corrosion inhibitor, which comprises the following steps: feeding the components of the ethanol gasoline polymetallic organic acid corrosion inhibitor into a container according to the mass part ratio, adding isooctanol and N, N-dimethylformamide into the container, then sequentially adding and dissolving methylbenzotriazole and acetylene alcohol, fully stirring and dissolving, then sequentially adding kerosene, dodecenyl succinic acid and dimerized linoleic acid, stirring uniformly, and filtering to obtain the ethanol gasoline polymetallic organic acid corrosion inhibitor.
Further, the condition for dissolving the methylbenzotriazole and the acetylene alcohol is room temperature, and proper heating can be selected, wherein the temperature is less than or equal to 60 ℃, so that the dissolution of solid components is accelerated, and the better uniform mixing is facilitated. The temperature of 60 ℃ is in the common temperature range of the general compound preparation, and higher temperature can bring side reaction and waste energy. The complexing agent component of the invention does not produce side reaction in the preparation.
The ethanol gasoline polymetallic organic acid corrosion inhibitor and the preparation method thereof have the following beneficial effects: the ethanol gasoline polymetallic organic acid corrosion inhibitor has good corrosion inhibition effect on common metal brass, red copper, aluminum and steel in oil ways such as engines, fuel oil storage and delivery systems and the like, and comprises the following components: the methylbenzotriazole can mainly inhibit the corrosion to red copper and brass; the dodecenylsuccinic acid and the dimerized linoleic acid can mainly inhibit the corrosion to aluminum and iron, and because steel mainly consists of iron and carbon, the dodecenylsuccinic acid and the dimerized linoleic acid also have a certain corrosion inhibition effect on the steel; acetylene alcohols primarily inhibit corrosion of the steel. The effective components contained in the corrosion inhibitor can correspondingly form a protective film on the surface of the metal, thereby effectively preventing the corrosive components in the ethanol gasoline from corroding the metal. Under the condition of extremely small dosage, the corrosion inhibitor can ensure that the corrosivity of fuel gasoline including ethanol gasoline reaches the copper sheet corrosion level below 1 by adding 200 ppm; in a 21-day sheet metal corrosion experiment, the corrosion inhibition rates of brass, red copper, aluminum and 20# steel are 97%, 96%, 95% and 94%, respectively. The components used in the corrosion inhibitor are all ashless, so that ash influence on a fuel storage and delivery system and an engine is avoided in the using process, and the components are non-corrosive; the corrosion inhibitor of the invention has the advantages of few component types, easily obtained raw materials, low cost and simple preparation, and brings great convenience for production, preparation and use.
Examples
The components and the ratios of the examples 1 to 10 and the experimental conditions are shown in Table 1. Meanwhile, it should be noted that the preparation methods of examples 1 to 10 are as follows: according to the addition ratio of the components in each of the embodiments 1 to 10, isooctanol and DMF are added into a beaker, then methyl benzotriazole and acetylene alcohol are added, the mixture is stirred and dissolved at the temperature selected in each of the embodiments 1 to 10, kerosene, dodecenyl succinic acid and dimerized linoleic acid are sequentially added, the mixture is stirred uniformly and then filtered, and the corrosion inhibitor product in each embodiment is obtained.
TABLE 1 Total mass ratio of corrosion inhibitors of examples 1 to 10 (based on 100 parts by mass)
Note: in the table of Table 1, "-" indicates that the component was not added.
Example 11
Adding 20g of isooctanol, 15g of DMF, 20g of methylbenzotriazole and 10g of polyvinylpyrrolidone into a beaker, stirring at normal temperature to dissolve, adding 35g of kerosene and 20g of heptadecenyl imidazoline amine salt ashless antirust agent, stirring uniformly, and filtering to obtain the corrosion inhibitor No. 11.
As can be seen from table 1, example 5 differs from example 2 by the elimination of the dimerized linoleic acid component; example 6 differs from example 2 in that the dodecenylsuccinic acid component was deleted; example 7 differs from example 2 in that dodecenylsuccinic acid and dimerized linoleic acid are not added in the range of the formulation of the present invention; example 8 differs from example 2 in that dodecenylsuccinic acid and dimerized linoleic acid are not added in the range of the formulation of the present invention; example 9 differs from example 2 in that the acetylene alcohol component is omitted and the amount of methylbenzotriazole added is correspondingly increased; example 10 differs from example 2 in that the methylbenzotriazole component was omitted, with a corresponding increase in the amount of acetylenic alcohol added.
The corrosion inhibitors 1# -11# prepared in the above examples 1-11 and the commercially available corrosion inhibitor products of Beijing Xingpo company were used as corrosion inhibitors 12#, the corrosion inhibitors were added to ethanol gasoline without corrosion inhibitors in a proportion of 200ppm, sample numbers were YP1-12#, ethanol gasoline without corrosion inhibitors was used as YP0# sample, and a metal sheet corrosion test was carried out under the experimental conditions of 46 ℃ for 21 days, in which ethanol gasoline contained a small amount of corrosion accelerator. The metal corrosion inhibition effect of each group is shown in Table 2.
TABLE 2 Corrosion test results for metal sheets
Note: the corrosion inhibition rate is (G0-G)/G0 multiplied by 100%
G0, which represents the corrosion amount of the metal sheet without the corrosion inhibitor;
g represents the corrosion amount of the metal sheet after the corrosion inhibitor is added.
From the experimental data of table 2, it can be concluded that: the corrosion inhibitor formula can effectively reduce the corrosion of the ethanol gasoline to metal sheets under the condition of extremely small dosage, can reduce the dosage of the corrosion inhibitor compared with the prior product, avoids influencing the characteristics of the gasoline, and saves the cost at the same time. After the corrosion inhibitor formula disclosed by the invention is applied, the service life of metal parts of an engine can be prolonged, and the failure rate caused by corrosion is reduced. The dodecenylsuccinic acid and the dimerized linoleic acid in the corrosion inhibitor have a synergistic enhancement effect, and the corrosion inhibition effect on metal can be improved by using the dodecenylsuccinic acid and the dimerized linoleic acid simultaneously.
The ethanol gasoline polymetallic organic acid corrosion inhibitor and the preparation method thereof have the following beneficial effects: the ethanol gasoline polymetallic organic acid corrosion inhibitor has good corrosion inhibition effect on common metal brass, red copper, aluminum and steel in oil ways such as engines, fuel oil storage and delivery systems and the like, and comprises the following components: the methylbenzotriazole can mainly inhibit the corrosion to red copper and brass; the dodecenylsuccinic acid and the dimerized linoleic acid can mainly inhibit the corrosion to aluminum and iron, and because steel mainly consists of iron and carbon, the dodecenylsuccinic acid and the dimerized linoleic acid also have a certain corrosion inhibition effect on the steel; acetylene alcohols primarily inhibit corrosion of the steel. The organic acid and the acetylene alcohol in the corrosion inhibitor have a certain synergistic enhancement effect, and the corrosion inhibition effect on steel can be enhanced by simultaneously adding the organic acid and the acetylene alcohol according to the formula proportion of the corrosion inhibitor. The effective components contained in the corrosion inhibitor can correspondingly form a protective film on the surface of the metal, thereby effectively preventing the corrosive components in the ethanol gasoline from corroding the metal. Under the condition of extremely small dosage, the corrosion inhibitor can ensure that the corrosivity of fuel gasoline including ethanol gasoline reaches the copper sheet corrosion level below 1 by adding 200 ppm; in a 21-day sheet metal corrosion experiment, the corrosion inhibition rates of brass, red copper, aluminum and 20# steel are 97%, 96%, 95% and 94%, respectively. The components used in the corrosion inhibitor are all ashless, so that ash influence on a fuel storage and delivery system and an engine is avoided in the using process, and the components are non-corrosive; the corrosion inhibitor of the invention has the advantages of few component types, easily obtained raw materials, low cost and simple preparation, and brings great convenience for production, preparation and use.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The ethanol gasoline polymetallic organic acid corrosion inhibitor is characterized by comprising the following components in parts by mass: 15-25 parts of methylbenzotriazole, 17-30 parts of organic acid, 5-8 parts of acetylene alcohol and 32-63 parts of solvent.
2. The ethanol gasoline polymetallic organic acid corrosion inhibitor as claimed in claim 1, which is characterized by comprising the following components in parts by mass: 15-25 parts of methylbenzotriazole, 17-30 parts of organic acid, 5-8 parts of acetylene alcohol and 45-50 parts of solvent.
3. The corrosion inhibitor for ethanol gasoline multimetallic organic acids of claim 1 wherein said organic acids comprise dodecenylsuccinic acid and dimerized linoleic acid.
4. The ethanol gasoline polymetallic organic acid corrosion inhibitor as claimed in claim 3, wherein the organic acid comprises the following components in parts by weight: dodecenylsuccinic acid accounting for 10-15 parts of the total mass of the corrosion inhibitor and dimerized linoleic acid accounting for 7-15 parts of the total mass of the corrosion inhibitor.
5. The corrosion inhibitor for ethanol gasoline polymetallic organic acids as claimed in claim 1, wherein said solvent comprises: isooctyl alcohol, N-dimethylformamide and kerosene.
6. The ethanol gasoline polymetallic organic acid corrosion inhibitor as claimed in claim 5, wherein the solvent comprises the following components in parts by mass: isooctanol accounting for 15-25 parts of the total mass part of the corrosion inhibitor, N-dimethylformamide accounting for 7-15 parts of the total mass part of the corrosion inhibitor and kerosene accounting for 10-23 parts of the total mass part of the corrosion inhibitor.
7. A preparation method of an ethanol gasoline polymetallic organic acid corrosion inhibitor is characterized by comprising the following steps: feeding the components of the ethanol gasoline polymetallic organic acid corrosion inhibitor according to any one of claims 1 to 6 into a container in parts by mass, adding isooctanol and N, N-dimethylformamide into the container, then sequentially adding and dissolving methylbenzotriazole and acetylene alcohol, fully stirring and dissolving, sequentially adding kerosene, dodecenylsuccinic acid and dimerized linoleic acid, uniformly stirring and filtering to obtain the ethanol gasoline polymetallic organic acid corrosion inhibitor.
8. The method for preparing the ethanol gasoline polymetallic organic acid corrosion inhibitor according to claim 7, wherein the condition for dissolving the methylbenzotriazole and the acetylene alcohol is room temperature or the temperature is less than or equal to 60 ℃.
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Application publication date: 20220405 |