CN111826658B - Preparation method of hydrogenation corrosion inhibitor composition - Google Patents
Preparation method of hydrogenation corrosion inhibitor composition Download PDFInfo
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- CN111826658B CN111826658B CN202010716431.3A CN202010716431A CN111826658B CN 111826658 B CN111826658 B CN 111826658B CN 202010716431 A CN202010716431 A CN 202010716431A CN 111826658 B CN111826658 B CN 111826658B
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- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
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Abstract
The invention provides a preparation method of a hydrogenation corrosion inhibitor composition, wherein the hydrogenation corrosion inhibitor composition comprises 18-25% by mass of a component I modified raw material, 6-13% by mass of a component II additive and the balance of a solvent; the component I modified raw materials comprise the following components in parts by weight: 65-115 parts of modified imidazoline quaternary ammonium salt, 30-48 parts of octyl phenol polyoxyethylene ether and 8-22 parts of oleamide; the component II additive comprises 12-26 parts by weight of an auxiliary crosslinking agent, 2-8 parts by weight of a water-carrying agent and 1-6 parts by weight of a phase transfer catalyst; the method comprises the following steps: preparing modified imidazoline quaternary ammonium salt; mixing the composition; the hydrogenation corrosion inhibitor provided by the invention has better stability and better corrosion inhibition effect; the method has the advantages of simple preparation process and low preparation cost, and the whole process has great advantages in preparation economic benefit and is suitable for mass popularization.
Description
Technical Field
The invention relates to the technical field of chemical products, in particular to a preparation method of a hydrogenation corrosion inhibitor composition.
Background
Corrosion inhibitors are chemicals or compounds that, when present in the environment (medium) in appropriate concentrations and forms, prevent or slow the corrosion of materials, and are therefore also referred to as corrosion inhibitors.
The corrosion inhibitor can be adsorbed on the metal surface to form a monomolecular water-resistant protective layer, most corrosion inhibitors have functional groups containing oxygen, sulfur and other atoms, the polar functional groups are adsorbed on the metal surface to form a monomolecular protective film, the polar functional groups and the metal atoms are combined by virtue of electron pairs between the polar functional groups and the metal atoms, and hydroxyl in the corrosion inhibitor molecule covers the metal surface to form the outer layer of the molecular film, so that the metal and corrosive water are isolated, the metal surface is prevented from contacting with an acidic medium, meanwhile, acidic substances in a fluid can be partially neutralized, the acidity of the fluid is adjusted, and the purpose of protecting the metal is achieved. Due to the presence of H in the fractionation system 2 S and other active sulfur have a corrosion effect on equipment, and a corrosion inhibitor is added for preventing the corrosion and protecting the equipment.
However, the hydrogenation corrosion inhibitor in the prior art has little effect on preventing corrosion; therefore, a need exists for a hydrogenated corrosion inhibitor composition with good corrosion resistance.
Disclosure of Invention
Aiming at the problems, the invention provides a hydrogenation corrosion inhibitor composition with good corrosion resistance effect and a preparation method thereof.
The technical scheme of the invention is as follows: a hydrogenation corrosion inhibitor composition comprises 18-25% by mass of a component I modified raw material, 6-13% by mass of a component II additive and the balance of a solvent;
the component I modified raw materials comprise the following components in parts by weight: 65-115 parts of modified imidazoline quaternary ammonium salt, 30-48 parts of octyl phenol polyoxyethylene ether and 8-22 parts of oleamide;
the component II additive comprises 12-26 parts by weight of an auxiliary crosslinking agent, 2-8 parts by weight of a water-carrying agent and 1-6 parts by weight of a phase transfer catalyst;
the solvent is specifically absolute ethyl alcohol;
the preparation method comprises the following steps:
the method comprises the following steps: preparation of modified imidazoline quaternary ammonium salt
Firstly, modifying oleic acid to obtain modified oleic acid, mixing the modified oleic acid with xylene, heating to a certain temperature, then, beginning to dropwise add ethylene tetramine into the mixed solution, and heating to obtain a modified oleic acid imidazoline intermediate; then mixing the modified imidazoline oleate intermediate with acetic acid under the condition of taking ethyl acetate as a solvent to react to obtain modified imidazoline quaternary ammonium salt;
step two: mixing of the compositions
Mixing the modified imidazoline quaternary ammonium salt and the octyl phenol polyoxyethylene ether according to the parts by weight, and continuously stirring and reacting for a period of time under the conditions of a certain temperature and a certain rotating speed; after cooling, adding oleamide and the additive of the component II, and then continuously stirring for reacting for a period of time to obtain a mixed product; and mixing the mixed product with a solvent to obtain the hydrogenation corrosion inhibitor.
Further, the cross-linking agent adopts an unsaturated carboxylic acid metal salt assistant cross-linking agent or an organic metal ester coupling agent; the unsaturated carboxylic acid metal salt assistant crosslinking agent specifically adopts zinc methacrylate, and the organic metal ester coupling agent specifically adopts zirconate; when the reaction proceeds, the crosslinking agent is exposed to light to generate a diradical between the raw materials, thereby promoting the generation of the reaction between the diradicals.
Further, the water-carrying agent specifically adopts dimethylbenzene; the conversion rate can be effectively improved by using the water-carrying agent, and water is separated from the reaction system.
Further, the phase transfer catalyst adopts quaternary ammonium salt, specifically adopts any one of benzyltriethylammonium chloride, trioctylmethylammonium chloride and tetradecyltrimethylammonium chloride; onium salts capable of promoting an increase in reaction rate and transferring negative ions between two phases by using a phase transfer catalyst;
a preparation method of a hydrogenation corrosion inhibitor composition specifically comprises the following steps:
the method comprises the following steps: preparation of modified imidazoline quaternary ammonium salt
Mixing chlorine gas and air according to the volume ratio of 1:1, introducing the mixture into oleic acid at the flow rate of 0.1-0.15L/h, and continuously stirring the mixture for 3-5 h at the rotation speed of 300-500 r/min to obtain first modified oleic acid;
then mixing the first modified oleic acid with xylene according to a mass ratio of 50-70: 5-8 to obtain a mixed solution; then heating to 100 ℃, and then beginning to dropwise add ethylene tetramine into the mixed solution; then continuously heating to 230 ℃ at the speed of 5 ℃/min and keeping for 10-15 min to obtain a modified oleic acid imidazoline intermediate; then mixing the modified imidazoline oleate intermediate with acetic acid according to the volume ratio of 50-68: 13-17 under the condition of using ethyl acetate as a solvent to perform a reaction to obtain a modified imidazoline quaternary ammonium salt;
step two: mixing of compositions
Mixing the modified imidazoline quaternary ammonium salt and the octyl phenol polyoxyethylene ether according to the parts by weight, and continuously stirring and reacting for 1-2 hours under the conditions that the temperature is 175-200 ℃ and the stirring speed is 180-200 r/min; then, cooling to 50-65 ℃, adding oleamide and a component II additive, and continuously stirring and reacting for 0.5-1 h under the conditions that the temperature is 175-200 ℃ and the stirring speed is 180-200 r/min to obtain a mixed product; and mixing the mixed product with a solvent according to a mass ratio to obtain the hydrogenation corrosion inhibitor.
Further, the preparation method of the hydrogenation corrosion inhibitor composition specifically comprises the following steps:
the method comprises the following steps: preparation of modified imidazoline quaternary ammonium salt
Slowly dropping concentrated sulfuric acid with the mass concentration of 78-85% into oleic acid, controlling the temperature to be 85-90 ℃ in a cold water bath mode, and continuously stirring at the rotating speed of 200-300 r/min for 1.5h to obtain second modified oleic acid; wherein the volume ratio of the added concentrated sulfuric acid to the oleic acid is 2-3: 5;
then mixing the second modified oleic acid with xylene according to a mass ratio of 50-70: 5-8 to obtain a mixed solution; then heating to 100 ℃, and then beginning to dropwise add ethylene tetramine into the mixed solution; then continuously heating to 230 ℃ at the speed of 5 ℃/min and keeping for 10-15 min to obtain a modified oleic acid imidazoline intermediate; then mixing the modified imidazoline oleate intermediate with acetic acid according to the volume ratio of 50-68: 13-17 under the condition of using ethyl acetate as a solvent to perform a reaction to obtain a modified imidazoline quaternary ammonium salt;
step two: mixing of compositions
Mixing the modified imidazoline quaternary ammonium salt and the octyl phenol polyoxyethylene ether according to the parts by weight, and continuously stirring for reacting for 1-2 hours under the conditions that the temperature is 175-200 ℃ and the stirring speed is 180-200 r/min; then, cooling to 50-65 ℃, adding oleamide and a component II additive, and continuously stirring and reacting for 0.5-1 h under the conditions that the temperature is 175-200 ℃ and the stirring speed is 180-200 r/min to obtain a mixed product; and mixing the mixed product with a solvent according to a mass ratio to obtain the hydrogenation corrosion inhibitor.
Further, the preparation method of the hydrogenation corrosion inhibitor composition specifically comprises the following steps:
the method comprises the following steps: preparation of modified imidazoline quaternary ammonium salt
Mixing chlorine gas and air according to the volume ratio of 1:1, introducing the mixture into oleic acid at the flow rate of 0.1-0.15L/h, and continuously stirring the mixture for 3-5 h at the rotation speed of 300-500 r/min to obtain first modified oleic acid;
slowly dropping concentrated sulfuric acid with the mass concentration of 78-85% into oleic acid, controlling the temperature to be 85-90 ℃ in a cold water bath mode, and continuously stirring at the rotating speed of 200-300 r/min for 1.5h to obtain second modified oleic acid; wherein the volume ratio of the added concentrated sulfuric acid to the oleic acid is 2-3: 5;
then, mixing the first modified oleic acid, the second modified oleic acid and xylene according to a mass ratio of 35-45: mixing at a ratio of 15-25: 5-8 to obtain a mixed solution; then heating to 100 ℃, and then beginning to dropwise add ethylene tetramine into the mixed solution; then continuously heating to 230 ℃ at the speed of 5 ℃/min and keeping for 10-15 min to obtain a modified oleic acid imidazoline intermediate; then mixing the modified imidazoline oleate intermediate with acetic acid according to the volume ratio of 50-68: 13-17 under the condition of using ethyl acetate as a solvent to perform a reaction to obtain a modified imidazoline quaternary ammonium salt;
step two: mixing of compositions
Mixing the modified imidazoline quaternary ammonium salt and the octyl phenol polyoxyethylene ether according to the parts by weight, and continuously stirring and reacting for 1-2 hours under the conditions that the temperature is 175-200 ℃ and the stirring speed is 180-200 r/min; then, cooling to 50-65 ℃, adding oleamide and a component II additive, and continuously stirring for reaction for 0.5-1 h under the conditions that the temperature is 175-200 ℃ and the stirring speed is 180-200 r/min to obtain a mixed product; and mixing the mixed product with a solvent according to a mass ratio to obtain the hydrogenation corrosion inhibitor.
Compared with the prior art, the invention has the beneficial effects that: the hydrogenation corrosion inhibitor provided by the invention has better stability and better corrosion inhibition effect; the method has the advantages of simple preparation process and low preparation cost, and the whole process has great advantages in preparation economic benefit and is suitable for mass popularization.
Detailed Description
Example 1: a preparation method of a hydrogenation corrosion inhibitor composition comprises 18% of a component I modified raw material, 6% of a component II additive and the balance of a solvent by mass percent;
the component I modified raw materials comprise the following components in parts by weight: 65 parts of modified imidazoline quaternary ammonium salt, 30 parts of octyl phenol polyoxyethylene ether and 8 parts of oleamide;
the component II additive comprises 12 parts of auxiliary cross-linking agent, 2 parts of water-carrying agent and 1 part of phase transfer catalyst according to parts by weight; the cross-linking agent is an unsaturated carboxylic acid metal salt assistant cross-linking agent, specifically zinc methacrylate; the water-carrying agent is specifically dimethylbenzene; the phase transfer catalyst adopts quaternary ammonium salt, specifically adopts benzyltriethylammonium chloride;
the solvent is specifically absolute ethyl alcohol;
the preparation method of the hydrogenation corrosion inhibitor composition specifically comprises the following steps:
the method comprises the following steps: preparation of modified imidazoline quaternary ammonium salt
Mixing chlorine gas and air according to the volume ratio of 1:1, introducing the mixture into oleic acid at the flow rate of 0.1L/h, and continuously stirring the mixture for 3h at the rotating speed of 300r/min to obtain first modified oleic acid;
then mixing the first modified oleic acid with xylene according to a mass ratio of 10:1 to obtain a mixed solution; then heating to 100 ℃, and then beginning to dropwise add ethylene tetramine into the mixed solution; then continuously heating to 230 ℃ at the speed of 5 ℃/min and keeping for 10min to obtain a modified oleic acid imidazoline intermediate; then mixing the modified imidazoline oleate intermediate with acetic acid according to the volume ratio of 50:13 under the condition of taking ethyl acetate as a solvent to react to obtain modified imidazoline quaternary ammonium salt;
step two: mixing of compositions
Mixing the modified imidazoline quaternary ammonium salt and the octyl phenol polyoxyethylene ether according to parts by weight, and continuously stirring for reaction for 1h under the conditions that the temperature is 175 ℃ and the stirring speed is 180 r/min; then, cooling to 50 ℃, adding oleamide and a component II additive, and continuously stirring and reacting for 0.5h under the conditions that the temperature is 175 ℃ and the stirring speed is 180r/min to obtain a mixed product; and mixing the mixed product with a solvent according to a mass ratio to obtain the hydrogenation corrosion inhibitor.
Example 2: a hydrogenation corrosion inhibitor composition comprises 20% of a component I modified raw material, 12% of a component II additive and the balance of a solvent by mass percent;
the component I modified raw materials comprise the following components in parts by weight: 85 parts of modified imidazoline quaternary ammonium salt, 35 parts of octyl phenol polyoxyethylene ether and 18-oleic acid amide;
the component II additive comprises 20 parts of auxiliary cross-linking agent, 6 parts of water-carrying agent and 3 parts of phase transfer catalyst according to parts by weight; the cross-linking agent adopts an organic metal ester coupling agent, and particularly adopts zirconate; the water-carrying agent is specifically dimethylbenzene; the phase transfer catalyst adopts quaternary ammonium salt, specifically trioctylmethylammonium chloride;
the solvent is specifically absolute ethyl alcohol.
The preparation method of the hydrogenation corrosion inhibitor composition specifically comprises the following steps:
the method comprises the following steps: preparation of modified imidazoline quaternary ammonium salt
Mixing chlorine gas and air according to the volume ratio of 1:1, introducing the mixture into oleic acid at the flow rate of 0.13L/h, and continuously stirring the mixture for 3.5h at the rotation speed of 400r/min to obtain first modified oleic acid;
then mixing the first modified oleic acid with xylene according to a mass ratio of 60:7 to obtain a mixed solution; then heating to 100 ℃, and then beginning to dropwise add ethylene tetramine into the mixed solution; then continuously heating to 230 ℃ at the speed of 5 ℃/min and keeping for 12min to obtain a modified oleic acid imidazoline intermediate; then mixing the modified imidazoline oleate intermediate with acetic acid according to the volume ratio of 55:14 under the condition of taking ethyl acetate as a solvent to react to obtain modified imidazoline quaternary ammonium salt;
step two: mixing of compositions
Mixing the modified imidazoline quaternary ammonium salt and the octyl phenol polyoxyethylene ether according to parts by weight, and continuously stirring and reacting for 1.5 hours under the conditions that the temperature is 190 ℃ and the stirring speed is 190 r/min; then, cooling to 60 ℃, adding oleamide and a component II additive, and continuously stirring and reacting for 0.5h under the conditions that the temperature is 190 ℃ and the stirring speed is 190r/min to obtain a mixed product; and mixing the mixed product with a solvent according to a mass ratio to obtain the hydrogenation corrosion inhibitor.
Example 3: a hydrogenation corrosion inhibitor composition comprises 25% of a component I modified raw material, 13% of a component II additive and the balance of a solvent by mass percent;
the component I modified raw materials comprise the following components in parts by weight: 115 parts of modified imidazoline quaternary ammonium salt, 48 parts of octyl phenol polyoxyethylene ether and 22 parts of oleamide;
the component II additive comprises 26 parts of auxiliary cross-linking agent, 8 parts of water-carrying agent and 6 parts of phase transfer catalyst according to parts by weight; the cross-linking agent is an unsaturated carboxylic acid metal salt assistant cross-linking agent, specifically zinc methacrylate; the water-carrying agent is specifically dimethylbenzene; the phase transfer catalyst adopts quaternary ammonium salt, specifically tetradecyltrimethyl ammonium chloride;
the solvent is specifically absolute ethyl alcohol.
The preparation method of the hydrogenation corrosion inhibitor composition specifically comprises the following steps:
the method comprises the following steps: preparation of modified imidazoline quaternary ammonium salt
Mixing chlorine gas and air according to the volume ratio of 1:1, introducing the mixture into oleic acid at the flow rate of 0.15L/h, and continuously stirring the mixture for 5h at the rotation speed of 500r/min to obtain first modified oleic acid;
then mixing the first modified oleic acid with xylene according to a mass ratio of 70:8 to obtain a mixed solution; then heating to 100 ℃, and then beginning to dropwise add ethylene tetramine into the mixed solution; then continuously heating to 230 ℃ at the speed of 5 ℃/min and keeping for 15min to obtain a modified oleic acid imidazoline intermediate; then mixing the modified imidazoline oleate intermediate with acetic acid according to the volume ratio of 68:17 under the condition of taking ethyl acetate as a solvent to react to obtain a modified imidazoline quaternary ammonium salt;
step two: mixing of the compositions
Mixing the modified imidazoline quaternary ammonium salt and the octyl phenol polyoxyethylene ether according to parts by weight, and continuously stirring for reaction for 2 hours under the conditions that the temperature is 200 ℃ and the stirring speed is 200 r/min; then, cooling to 65 ℃, adding oleamide and a component II additive, and continuously stirring and reacting for 1h under the conditions that the temperature condition is 200 ℃ and the stirring speed is 200r/min to obtain a mixed product; and mixing the mixed product with a solvent according to a mass ratio to obtain the hydrogenation corrosion inhibitor.
Example 4: a preparation method of a hydrogenation corrosion inhibitor composition specifically comprises the following steps:
the method comprises the following steps: preparation of modified imidazoline quaternary ammonium salt
Slowly dropping concentrated sulfuric acid with the mass concentration of 80% into oleic acid, controlling the temperature to be 85 ℃ in a cold water bath mode, and continuously stirring at the rotating speed of 250r/min for 1.5h to obtain second modified oleic acid; wherein the volume ratio of the added concentrated sulfuric acid to the oleic acid is 3: 5;
then mixing the second modified oleic acid with xylene according to a mass ratio of 60:7 to obtain a mixed solution; then heating to 100 ℃, and then beginning to dropwise add ethylene tetramine into the mixed solution; then continuously heating to 230 ℃ at the speed of 5 ℃/min and keeping for 12min to obtain a modified oleic acid imidazoline intermediate; then mixing the modified imidazoline oleate intermediate with acetic acid according to the volume ratio of 55:14 under the condition of taking ethyl acetate as a solvent to react to obtain modified imidazoline quaternary ammonium salt;
step two: mixing of the compositions
Mixing the modified imidazoline quaternary ammonium salt and the octyl phenol polyoxyethylene ether according to parts by weight, and continuously stirring for reaction for 2 hours under the conditions that the temperature is 200 ℃ and the stirring speed is 200 r/min; then, cooling to 65 ℃, adding oleamide and a component II additive, and continuously stirring and reacting for 1h under the conditions that the temperature condition is 200 ℃ and the stirring speed is 200r/min to obtain a mixed product; and mixing the mixed product with a solvent according to a mass ratio to obtain the hydrogenation corrosion inhibitor.
Example 5: a preparation method of a hydrogenation corrosion inhibitor composition specifically comprises the following steps:
the method comprises the following steps: preparation of modified imidazoline quaternary ammonium salt
Mixing chlorine gas and air according to the volume ratio of 1:1, introducing the mixture into oleic acid at the flow rate of 0.15L/h, and continuously stirring the mixture for 5h at the rotation speed of 3500r/min to obtain first modified oleic acid;
slowly dropping concentrated sulfuric acid with the mass concentration of 85% into oleic acid, controlling the temperature to be 90 ℃ in a cold water bath mode, and continuously stirring at the rotating speed of 300r/min for 1.5h to obtain second modified oleic acid; wherein the volume ratio of the added concentrated sulfuric acid to the oleic acid is 3: 5;
and then mixing the first modified oleic acid, the second modified oleic acid and xylene according to a mass ratio of 45: mixing at a ratio of 25:8 to obtain a mixed solution; then heating to 100 ℃, and then beginning to dropwise add ethylene tetramine into the mixed solution; then continuously heating to 230 ℃ at the speed of 5 ℃/min and keeping for 15min to obtain a modified oleic acid imidazoline intermediate; then mixing the modified imidazoline oleate intermediate with acetic acid according to the volume ratio of 68:17 under the condition of using ethyl acetate as a solvent to react to obtain modified imidazoline quaternary ammonium salt;
step two: mixing of compositions
Mixing the modified imidazoline quaternary ammonium salt and the octyl phenol polyoxyethylene ether according to parts by weight, and continuously stirring for reaction for 2 hours under the conditions that the temperature is 200 ℃ and the stirring speed is 200 r/min; then, cooling to 65 ℃, adding oleamide and a component II additive, and continuously stirring and reacting for 1h under the conditions that the temperature condition is 200 ℃ and the stirring speed is 200r/min to obtain a mixed product; and mixing the mixed product with a solvent according to a mass ratio to obtain the hydrogenation corrosion inhibitor.
Experimental example: the hydrogenation corrosion inhibitor compositions prepared in examples 1-5 were subjected to a static corrosion test at normal pressure. The method specifically comprises the following steps: passing a 75mm × 10mm × 2mm piece of N80 steel through 600 # Polishing the sand paper, then accurately weighing, and performing a static coupon test with corrosion time of 5h under the condition of temperature of 50 ℃, wherein a corrosion medium adopts 25% HCl solution, and the volume ratio of the addition amount of the hydrogenation corrosion inhibitor to the corrosion medium is 1: 100; the specific calculated corrosion inhibition rates are as follows:
and (4) conclusion: the hydrogenation corrosion inhibitor prepared by the hydrogenation corrosion inhibitor method has better corrosion inhibitor.
Claims (7)
1. The preparation method of the hydrogenation corrosion inhibitor composition is characterized in that the hydrogenation corrosion inhibitor composition comprises 18-25% by mass of a component I modified raw material, 6-13% by mass of a component II additive and the balance of a solvent;
the component I modified raw materials comprise the following components in parts by weight: 65-115 parts of modified imidazoline quaternary ammonium salt, 30-48 parts of octyl phenol polyoxyethylene ether and 8-22 parts of oleamide;
the component II additive comprises 12-26 parts by weight of cross-linking agent, 2-8 parts by weight of water-carrying agent and 1-6 parts by weight of phase transfer catalyst;
the solvent is specifically absolute ethyl alcohol, the crosslinking agent adopts an unsaturated carboxylic acid metal salt assistant crosslinking agent or an organic metal ester coupling agent, and the phase transfer catalyst adopts quaternary ammonium salt;
the preparation method comprises the following steps:
the method comprises the following steps: preparation of modified imidazoline quaternary ammonium salt
Firstly, modifying oleic acid to obtain modified oleic acid, mixing the modified oleic acid with xylene, heating to a certain temperature, then, beginning to dropwise add ethylene tetramine into the mixed solution, and heating to obtain a modified oleic acid imidazoline intermediate; then mixing the modified imidazoline oleate intermediate with acetic acid under the condition of taking ethyl acetate as a solvent to react to obtain modified imidazoline quaternary ammonium salt;
step two: mixing of compositions
Mixing the modified imidazoline quaternary ammonium salt and the octyl phenol polyoxyethylene ether according to the parts by weight, and continuously stirring and reacting for a period of time under the conditions of a certain temperature and a certain rotating speed; after cooling, adding oleamide and the additive of the component II, and then continuously stirring for reacting for a period of time to obtain a mixed product; then mixing the mixed product with absolute ethyl alcohol to obtain a hydrogenation corrosion inhibitor;
the modified oleic acid is first modified oleic acid or second modified oleic acid;
mixing chlorine gas and air according to the volume ratio of 1:1, introducing the mixture into oleic acid at the flow rate of 0.1-0.15L/h, and continuously stirring the mixture for 3-5 h at the rotation speed of 300-500 r/min to obtain first modified oleic acid;
slowly dropping concentrated sulfuric acid with the mass concentration of 78-85% into oleic acid, controlling the temperature to be 85-90 ℃ in a cold water bath mode, and continuously stirring at the rotating speed of 200-300 r/min for 1.5h to obtain second modified oleic acid; wherein the volume ratio of the added concentrated sulfuric acid to the oleic acid is 2-3: 5.
2. The method of claim 1, wherein the metal salt of unsaturated carboxylic acid as co-crosslinking agent is zinc methacrylate, and the organic metal ester as coupling agent is zirconate.
3. The method of claim 1, wherein the water-carrying agent is xylene.
4. The method for preparing a hydrogenation corrosion inhibitor composition according to claim 1, wherein the phase transfer catalyst is any one of benzyltriethylammonium chloride, trioctylmethylammonium chloride and tetradecyltrimethylammonium chloride.
5. The preparation method of the hydrogenation corrosion inhibitor composition according to any one of claims 1 to 4, which comprises the following steps:
the method comprises the following steps: preparation of modified imidazoline quaternary ammonium salt
Mixing the first modified oleic acid and xylene according to a mass ratio of 50-70: 5-8 to obtain a mixed solution; then heating to 100 ℃, and then beginning to dropwise add ethylene tetramine into the mixed solution; then continuously heating to 230 ℃ at the speed of 5 ℃/min and keeping for 10-15 min to obtain a modified oleic acid imidazoline intermediate; then mixing the modified imidazoline oleate intermediate with acetic acid according to the volume ratio of 50-68: 13-17 under the condition of using ethyl acetate as a solvent to perform a reaction to obtain a modified imidazoline quaternary ammonium salt;
step two: mixing of the compositions
Mixing the modified imidazoline quaternary ammonium salt and the octyl phenol polyoxyethylene ether according to the mass parts, and continuously stirring and reacting for 1-2 hours under the conditions that the temperature is 175-200 ℃ and the stirring speed is 180-200 r/min; then, cooling to 50-65 ℃, adding oleamide and a component II additive, and continuously stirring and reacting for 0.5-1 h under the conditions that the temperature is 175-200 ℃ and the stirring speed is 180-200 r/min to obtain a mixed product; and mixing the mixed product with a solvent according to a mass ratio to obtain the hydrogenation corrosion inhibitor.
6. The preparation method of the hydrogenation corrosion inhibitor composition as claimed in any one of claims 1 to 4, wherein the preparation method specifically comprises the following steps:
the method comprises the following steps: preparation of modified imidazoline quaternary ammonium salt
Mixing the second modified oleic acid and xylene according to a mass ratio of 50-70: 5-8 to obtain a mixed solution; then heating to 100 ℃, and then beginning to dropwise add ethylene tetramine into the mixed solution; then continuously heating to 230 ℃ at the speed of 5 ℃/min and keeping for 10-15 min to obtain a modified oleic acid imidazoline intermediate; then mixing the modified imidazoline oleate intermediate with acetic acid according to the volume ratio of 50-68: 13-17 under the condition of using ethyl acetate as a solvent to perform a reaction to obtain a modified imidazoline quaternary ammonium salt;
step two: mixing of compositions
Mixing the modified imidazoline quaternary ammonium salt and the octyl phenol polyoxyethylene ether according to the mass parts, and continuously stirring and reacting for 1-2 hours under the conditions that the temperature is 175-200 ℃ and the stirring speed is 180-200 r/min; then, cooling to 50-65 ℃, adding oleamide and a component II additive, and continuously stirring and reacting for 0.5-1 h under the conditions that the temperature is 175-200 ℃ and the stirring speed is 180-200 r/min to obtain a mixed product; and mixing the mixed product with a solvent according to a mass ratio to obtain the hydrogenation corrosion inhibitor.
7. The preparation method of the hydrogenation corrosion inhibitor composition according to any one of claims 1 to 4, which comprises the following steps:
the method comprises the following steps: preparation of modified imidazoline quaternary ammonium salt
Mixing the first modified oleic acid, the second modified oleic acid and xylene according to a mass ratio of 35-45: mixing at a ratio of 15-25: 5-8 to obtain a mixed solution; then heating to 100 ℃, and then beginning to dropwise add ethylene tetramine into the mixed solution; then continuously heating to 230 ℃ at the speed of 5 ℃/min and keeping for 10-15 min to obtain a modified oleic acid imidazoline intermediate; then mixing the modified imidazoline oleate intermediate with acetic acid according to the volume ratio of 50-68: 13-17 under the condition of using ethyl acetate as a solvent to perform a reaction to obtain a modified imidazoline quaternary ammonium salt;
step two: mixing of compositions
Mixing the modified imidazoline quaternary ammonium salt and the octyl phenol polyoxyethylene ether according to the mass parts, and continuously stirring and reacting for 1-2 hours under the conditions that the temperature is 175-200 ℃ and the stirring speed is 180-200 r/min; then, cooling to 50-65 ℃, adding oleamide and a component II additive, and continuously stirring and reacting for 0.5-1 h under the conditions that the temperature is 175-200 ℃ and the stirring speed is 180-200 r/min to obtain a mixed product; and mixing the mixed product with a solvent according to a mass ratio to obtain the hydrogenation corrosion inhibitor.
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