Preparation method of corrosion inhibitor for methanol gasoline

A corrosion inhibitor and methanol gasoline technology, which is applied in the field of metal anti-corrosion, can solve the problems of difficulty in burning methanol fuel, poor methanol ignition, and affecting the power performance of automobiles, and achieve obvious anti-corrosion effects

Active Publication Date: 2015-08-19
马西岐 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

4) The vapor pressure of methanol is lower than that of gasoline, which will affect the power of the car
8) The ignitability of methanol is po

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0017] Example 1

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

[0019] Step 2: Wash the mixture I with 1% by mass sulfuric acid aqueous solution, then with 1% by mass NaOH aqueous solution, and then with water to obtain 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, and carboxymethyl into the mixture II. Add 1Kg of chitosan oligosaccharide vanillin Schiff base to the mixture obtained in step 1, heat and keep the temperature at 30~50℃, keep keeping time for 30~60min; then add 3...

Example Embodiment

[0021] Example 2

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

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

[0024] The third step is to add 2Kg of boronated succinimide, 6Kg of primary and secondary alkyl zinc salt of phosphorous, 6Kg of dipentaerythritol, 5Kg of hydrogenated soybean lecithin, 17Kg of triethylamine, 2Kg of thiosemicarbazide, carboxymethyl Add 2Kg of chitosan oligosaccharide vanillin Schiff base to the mixture obtained in step 1, heat and keep warm, heating temperature 30~50℃, keeping time 30~60min; then add 8Kg sodium octadecylbenz...

Example Embodiment

[0025] Example 3

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

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

[0028] Step 3: Add 2Kg of boronated succinimide, 4Kg of primary and secondary alkyl zinc salt of phosphorous, 6Kg of dipentaerythritol, 4Kg of hydrogenated soybean lecithin, 15Kg of triethylamine, 1Kg of thiosemicarbazide, and carboxymethyl into the mixture II. Add 2Kg of chitosan oligosaccharide vanillin Schiff base to the mixture obtained in step 1, heat and keep warm, heating temperature 40℃, keeping time 50min; then add surfactant s...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): C10L1/10C10L1/233C10L1/238C10L1/18C10L1/182C10L1/30C10L1/26C10L1/222C10L1/24C10L10/04
Inventor 傅兴琴
Owner 马西岐
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