Preparation method of corrosion inhibitor for methanol gasoline

Abstract

The invention provides a preparation method of a corrosion inhibitor for methanol gasoline, and belongs to the technical field of metal corrosion prevention. The method comprises the following steps: adding an imidazoline compound, SPAN-80, rosin amine polyoxyethylene ether, sodium alginate, methyl propanediol and ethanol into a reactor, heating the raw materials, preserving the heat, and cooling to room temperature to obtain a mixture I; washing the mixture I by using a sulfuric acid aqueous solution, then washing the mixture I by using a NaOH aqueous solution, and then washing the mixture I by using water to obtain a mixture II; adding succinimide boride, zinc dialkyl dithiophosphate, dipentaerythritol, hydrogenated soybean lecithin, triethylamine, thiosemicarbazide and carboxymethyl chito-oligosaccharide vanillin Schiff base into the mixture II in parts by weight, heating the raw materials, and preserving the heat; then adding a surfactant and a combustion improver, and uniformly stirring to obtain the corrosion inhibitor.

Description

technical field

[0001] The invention provides a methanol gasoline corrosion inhibitor, which belongs to the technical field of metal anticorrosion. Background technique

[0002] As my country's dependence on oil imports continues to increase, coupled with the continuous growth of my country's automobile production, oil consumption also continues to increase, and because my country has abundant coal and agricultural product resources, the development of methanol and ethanol as fuel for automobiles also has broad prospects . my country is a country rich in coal but relatively deficient in oil and gas resources. According to national statistics in 1998, domestic coal reserves were 1,007.07 billion tons, and recoverable coal reserves were 765 billion tons. Therefore, coal resources are the main fossil energy in my country. my country's specific resource conditions have formed the characteristics of an energy structure dominated by coal. Therefore, my country's coal-based e...

Examples

Embodiment 1

[0018] Step 1. Add lauryl hydroxyethyl imidazoline 10Kg, SPAN-80 0.3Kg, rosin amine polyoxyethylene ether 0.3Kg, sodium alginate 0.2Kg, methyl propylene glycol 0.5Kg, ethanol 20Kg into the reactor, and then heat And heat preservation, heating temperature 56 ℃, heat preservation time 20min, cool to room temperature, obtain mixture I;

[0019] Step 2, the mixture I is first washed with a 1% mass percent sulfuric acid aqueous solution, then washed with a 1% mass percent NaOH aqueous solution, and then washed with water to obtain a mixture II;

[0020] Step 3, add 1Kg of boronated succinimide, 4Kg of primary and secondary alkyl zinc salt of sulfur phosphorus, 3Kg of dipentaerythritol, 2Kg of hydrogenated soybean lecithin, 12Kg of triethylamine, 1Kg of thiosemicarbazide, carboxymethyl Add 1Kg of chitooligosaccharide vanillin Schiff base to the mixture obtained in step 1, heat and keep it warm, the heating temperature is 30-50°C, and the holding time is 30-60min; then add 3Kg of sur...

Embodiment 2

[0022] Step 1, add lauryl hydroxyethyl imidazoline 12Kg, SPAN-80 0.6Kg, rosin amine polyoxyethylene ether 0.6Kg, sodium alginate 0.4Kg, methyl propylene glycol 0.8Kg, ethanol 30Kg into the reactor, and then heat And heat preservation, heating temperature 69 ℃, heat preservation time 50min, cooled to room temperature, obtained mixture I;

[0023] Step 2, the mixture I is first washed with a 3% aqueous sulfuric acid solution by mass percentage, then washed with a 3% aqueous NaOH solution by mass percentage, and then washed with water to obtain a mixture II;

[0024] Step 3, add 2Kg of boronated succinimide, 6Kg of primary and secondary alkyl zinc salt of sulfur phosphorus, 6Kg of dipentaerythritol, 5Kg of hydrogenated soybean lecithin, 17Kg of triethylamine, 2Kg of thiosemicarbazide, carboxymethyl Add 2Kg of chitooligosaccharide vanillin Schiff base to the mixture obtained in step 1, heat and keep it warm, the heating temperature is 30-50°C, and the holding time is 30-60min; the...

Embodiment 3

[0026] Step 1, add lauryl hydroxyethyl imidazoline 11Kg, SPAN-80 0.4Kg, rosin amine polyoxyethylene ether 0.5Kg, sodium alginate 0.3Kg, methyl propylene glycol 0.6Kg, ethanol 25Kg into the reactor, and then heat And heat preservation, heating temperature 60 ℃, heat preservation time 40min, cool to room temperature, obtain mixture I;

[0027] Step 2, the mixture I is first washed with a 2% aqueous sulfuric acid solution by mass percentage, then washed with a 2% aqueous NaOH solution by mass percentage, and then washed with water to obtain a mixture II;

[0028] Step 3, add 2Kg of boronated succinimide, 4Kg of primary and secondary alkyl zinc salt of sulfur phosphorus, 6Kg of dipentaerythritol, 4Kg of hydrogenated soybean lecithin, 15Kg of triethylamine, 1Kg of thiosemicarbazide, carboxymethyl Add 2Kg of chitosan oligosaccharide vanillin Schiff base to the mixture obtained in step 1, heat and keep it warm, the heating temperature is 40°C, and the holding time is 50min; then add ...

technical field

[0001] The invention provides a methanol gasoline corrosion inhibitor, which belongs to the technical field of metal anticorrosion. Background technique

[0002] As my country's dependence on oil imports continues to increase, coupled with the continuous growth of my country's automobile production, oil consumption also continues to increase, and because my country has abundant coal and agricultural product resources, the development of methanol and ethanol as fuel for automobiles also has broad prospects . my country is a country rich in coal but relatively deficient in oil and gas resources. According to national statistics in 1998, domestic coal reserves were 1,007.07 billion tons, and recoverable coal reserves were 765 billion tons. Therefore, coal resources are the main fossil energy in my country. my country's specific resource conditions have formed the characteristics of an energy structure dominated by coal. Therefore, my country's coal-based e...

Examples

Embodiment 1

[0018] Step 1. Add lauryl hydroxyethyl imidazoline 10Kg, SPAN-80 0.3Kg, rosin amine polyoxyethylene ether 0.3Kg, sodium alginate 0.2Kg, methyl propylene glycol 0.5Kg, ethanol 20Kg into the reactor, and then heat And heat preservation, heating temperature 56 ℃, heat preservation time 20min, cool to room temperature, obtain mixture I;

[0019] Step 2, the mixture I is first washed with a 1% mass percent sulfuric acid aqueous solution, then washed with a 1% mass percent NaOH aqueous solution, and then washed with water to obtain a mixture II;

[0020] Step 3, add 1Kg of boronated succinimide, 4Kg of primary and secondary alkyl zinc salt of sulfur phosphorus, 3Kg of dipentaerythritol, 2Kg of hydrogenated soybean lecithin, 12Kg of triethylamine, 1Kg of thiosemicarbazide, carboxymethyl Add 1Kg of chitooligosaccharide vanillin Schiff base to the mixture obtained in step 1, heat and keep it warm, the heating temperature is 30-50°C, and the holding time is 30-60min; then add 3Kg of sur...

Embodiment 2

[0022] Step 1, add lauryl hydroxyethyl imidazoline 12Kg, SPAN-80 0.6Kg, rosin amine polyoxyethylene ether 0.6Kg, sodium alginate 0.4Kg, methyl propylene glycol 0.8Kg, ethanol 30Kg into the reactor, and then heat And heat preservation, heating temperature 69 ℃, heat preservation time 50min, cooled to room temperature, obtained mixture I;

[0023] Step 2, the mixture I is first washed with a 3% aqueous sulfuric acid solution by mass percentage, then washed with a 3% aqueous NaOH solution by mass percentage, and then washed with water to obtain a mixture II;

[0024] Step 3, add 2Kg of boronated succinimide, 6Kg of primary and secondary alkyl zinc salt of sulfur phosphorus, 6Kg of dipentaerythritol, 5Kg of hydrogenated soybean lecithin, 17Kg of triethylamine, 2Kg of thiosemicarbazide, carboxymethyl Add 2Kg of chitooligosaccharide vanillin Schiff base to the mixture obtained in step 1, heat and keep it warm, the heating temperature is 30-50°C, and the holding time is 30-60min; the...

Embodiment 3

[0026] Step 1, add lauryl hydroxyethyl imidazoline 11Kg, SPAN-80 0.4Kg, rosin amine polyoxyethylene ether 0.5Kg, sodium alginate 0.3Kg, methyl propylene glycol 0.6Kg, ethanol 25Kg into the reactor, and then heat And heat preservation, heating temperature 60 ℃, heat preservation time 40min, cool to room temperature, obtain mixture I;

[0027] Step 2, the mixture I is first washed with a 2% aqueous sulfuric acid solution by mass percentage, then washed with a 2% aqueous NaOH solution by mass percentage, and then washed with water to obtain a mixture II;

[0028] Step 3, add 2Kg of boronated succinimide, 4Kg of primary and secondary alkyl zinc salt of sulfur phosphorus, 6Kg of dipentaerythritol, 4Kg of hydrogenated soybean lecithin, 15Kg of triethylamine, 1Kg of thiosemicarbazide, carboxymethyl Add 2Kg of chitosan oligosaccharide vanillin Schiff base to the mixture obtained in step 1, heat and keep it warm, the heating temperature is 40°C, and the holding time is 50min; then add ...