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Preparation process of oleyl alcohol polyoxyethylene ether sulfonate/sulfate

A technology of polyoxyethylene ether sulfonate and oleyl alcohol polyoxyethylene ether, which is applied in the field of preparation technology of oleyl alcohol polyoxyethylene ether sulfonate/sulfate, can solve the problems of polluting equipment, corrosion, restriction and the like, and achieves the Excellent salt tolerance effect

Active Publication Date: 2021-04-20
CHINA RES INST OF DAILY CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of oil exploration and pipeline transportation, oilfield chemicals are used to enhance oil recovery, reduce viscosity, remove wax, break emulsion, etc. If these oilfield chemicals contain organic chlorine soluble in crude oil, they will be produced in crude oil , Pollution and equipment corrosion during the gathering and transportation process
Therefore, the use of fatty alcohol polyoxyethylene ether sulfonate synthesized by a process route containing organochlorine in oilfield chemicals will be limited

Method used

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  • Preparation process of oleyl alcohol polyoxyethylene ether sulfonate/sulfate
  • Preparation process of oleyl alcohol polyoxyethylene ether sulfonate/sulfate
  • Preparation process of oleyl alcohol polyoxyethylene ether sulfonate/sulfate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Oleyl ethoxylates (n = 2) with SO from sulfur combustion 3 / Air enters the sulfonation reactor from the top of the membrane sulfonator, SO 3 The gas volume concentration is 4.0%, the total moles of double bonds and alcoholic hydroxyl groups in oleyl alcohol polyoxyethylene ether and SO 3 The molar ratio is 1:1.01, the cooling water temperature of the jacket of the sulfonator is 40°C, the product flowing out from the bottom of the sulfonator is neutralized with NaOH aqueous solution, and then hydrolyzed at 100°C for 30min to obtain sodium oleyl alcohol polyoxyethylene ether sulfonate / sodium sulfate aqueous solution, the target product content accounts for 98.3% of the total solid content. 1g / L of the product in 0-250 g / L NaCl solution or 0-10 g / L CaCl 2 The solution remains clear, and the light transmittance remains above 90% (such as figure 1 and figure 2 shown), which can meet the needs of most high-salinity oil reservoirs in China. 1g / L of the product was hea...

Embodiment 2

[0026] Oleyl alcohol polyoxyethylene ether (n = 8) and SO from oleum stripping 3 / air mixed gas enters the sulfonation reactor from the top of the membrane sulfonator, SO 3 The gas volume concentration is 3.0%, the total moles of double bonds and alcoholic hydroxyl groups in oleyl alcohol polyoxyethylene ether and SO 3 The molar ratio is 1:1.10, the cooling water temperature of the jacket of the sulfonator is 70°C, the product flowing out from the bottom of the sulfonator is neutralized with KOH aqueous solution, and then hydrolyzed at 90°C for 120min to obtain potassium oleyl alcohol polyoxyethylene ether sulfonate / potassium sulfate aqueous solution, the target product content accounts for 95.7% of the total solid content.

Embodiment 3

[0028] Oleyl ethoxylates (n = 10) with liquid SO 3 SO by evaporation 3 / air mixed gas enters the sulfonation reactor from the top of the membrane sulfonator, SO 3 The gas volume concentration is 5.0%, the total moles of double bonds and alcoholic hydroxyl groups in oleyl alcohol polyoxyethylene ether and SO 3 The molar ratio is 1:1.05, the cooling water temperature of the jacket of the sulfonator is 80°C, the product flowing out from the bottom of the sulfonator is neutralized with NaOH aqueous solution, and then hydrolyzed at 90°C for 120min to obtain sodium oleyl alcohol polyoxyethylene ether sulfonate / sodium sulfate aqueous solution, the target product content accounts for 93.6% of the total solid content.

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Abstract

The invention discloses a preparation process of oleyl alcohol polyoxyethylene ether sulfonate / sulfate, and belongs to the technical field of organic synthesis. The process comprises the following steps: enabling oleyl alcohol polyoxyethylene ether and SO3 / air mixed gas to enter from the top of a membrane type sulfonator and flow downwards in parallel to complete sulfonation reaction, and enabling a reaction product to leave from the bottom of the sulfonator; performing neutralizing through an alkaline solution and finally performing hydrolyzing to obtain a target product. The process route does not contain organic chlorine, can be used for industrial production by using the existing large sulfonation device, and is safe and environment-friendly; the prepared oleyl alcohol polyoxyethylene ether sulfonate / sulfate has excellent salt resistance and temperature resistance.

Description

technical field [0001] The invention relates to a preparation process of oleyl alcohol polyoxyethylene ether sulfonate / sulfate, belonging to the technical field of organic synthesis. Background technique [0002] Petroleum is an indispensable strategic resource for the survival and development of a country, and plays a particularly critical role in my country's economic development. Surfactant plays an important role in the process of oil extraction, which mainly improves oil recovery by reducing the interfacial tension of oil and water, emulsifying crude oil, and changing the wettability of oil reservoirs. Some oil reservoirs in my country belong to oilfields with high temperature and high salinity (for example, the formation temperature of Zhongyuan Oilfield is 70°C-130°C, the salinity is as high as 100 000 mg / L-250 000 mg / L, and the concentration of calcium and magnesium ions is as high as 10 000 mg / L. L), anionic surfactants suitable for common oil reservoirs, such as he...

Claims

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Application Information

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IPC IPC(8): C09K8/584C09K8/60
Inventor 刘晓臣李高占霍月青牛金平
Owner CHINA RES INST OF DAILY CHEM IND
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