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Sulfonated crude phenol Bola type surfactant as well as synthesis method and application thereof

A technology of surfactant and sulfonated crude phenol, which is applied in chemical instruments and methods, organic chemistry, sulfonic acid preparation, etc., can solve the problems of small affected area, low utilization rate of crude phenol, poisonous oil, etc., and achieve recovery The effect of increasing the rate, wide source, and reducing the adhesion

Active Publication Date: 2021-03-09
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sulfonated crude phenol Bola-type surfactant of the present invention solves the problems that other surfactant formations are less affected by oil, crude phenol is poisonous to oil in coal tar and the utilization rate of crude phenol is low.

Method used

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  • Sulfonated crude phenol Bola type surfactant as well as synthesis method and application thereof
  • Sulfonated crude phenol Bola type surfactant as well as synthesis method and application thereof
  • Sulfonated crude phenol Bola type surfactant as well as synthesis method and application thereof

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preparation example Construction

[0029] Concrete, the synthetic method of sulfonated crude phenol Bola type surfactant and its application as oil displacement agent, comprise the following steps:

[0030] (1) Put the crude phenol after vacuum drying into the flask, add dibutyltin dilaurate to mix, and slowly add isophorone diisocyanate dropwise. Wherein the crude phenol must be vacuum-dried. The molar ratio of isophorone diisocyanate to crude phenol is 1:(2~2.1). The addition amount of dibutyltin dilaurate is 0.5wt%. Under nitrogen protection, heat up to 60-100°C, react for 8-10 hours, depressurize and evacuate to obtain the intermediate.

[0031] Described crude phenol refers to phenol: 2-methylphenol: the mol ratio of 3-methylphenol is 1.0:0.2:0.7, and described diisocyanate is isophorone diisocyanate (IPDI), and described isophorone The molar ratio of diisocyanate (IPDI) to crude phenol is 1:(2-2.1); the catalyst is dibutyltin dilaurate (DBTDL), and the addition amount is 0.5wt%.

[0032] (2) the inter...

Embodiment 1

[0039] The molar ratio of isophorone diisocyanate and crude phenol (phenol: 2-methylphenol: 3-methylphenol molar ratio is 1.0:0.2:0.7) is 1:2.05, dibutyltin dilaurate 0.5wt% The mixture was added into a flask, under nitrogen protection, reacted at 60° C. for 8 hours, and vacuumed under reduced pressure to obtain an intermediate. Take the intermediate and concentrated H 2 SO 4 Molar ratio is 1:2.05, add dichloromethane solvent, concentrated H 2 SO 4 The mass fraction was 98%, and the reaction time was 30 minutes at 70° C. to obtain a crude product. The crude product was vacuum-dried, then dissolved in ethyl acetate, and the ethyl acetate layer was washed with water and saturated brine respectively, and anhydrous MgSO 4 dry. Ethyl acetate was distilled off under reduced pressure to obtain the product. The product is sulfonated crude phenol Bola surfactant. First set the permeability to 1.2~3.0μm 2 The man-made cores were evacuated and saturated with groundwater, and then...

Embodiment 2

[0041] The molar ratio of isophorone diisocyanate and crude phenol (phenol: 2-methylphenol: 3-methylphenol molar ratio is 1.0:0.2:0.7) is 1:2.1, dibutyltin dilaurate 0.5wt% The mixture was added into a flask, under nitrogen protection, reacted at 100° C. for 8 hours, and vacuumed under reduced pressure to obtain an intermediate. Take the intermediate and concentrated H 2 SO 4 Molar ratio is 1:2.05, add dichloromethane solvent, concentrated H 2 SO 4 The mass fraction was 98%, and the reaction time was 30 minutes at 70° C. to obtain a crude product. The crude product was vacuum-dried, then dissolved in ethyl acetate, and the ethyl acetate layer was washed with water and saturated brine respectively, and anhydrous MgSO 4 dry. Ethyl acetate was distilled off under reduced pressure to obtain the product. The product is sulfonated crude phenol Bola surfactant. First set the permeability to 1.2~3.0μm 2 The man-made cores were evacuated and saturated with groundwater, and then...

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Abstract

The invention discloses a sulfonated crude phenol Bola type surfactant as well as a synthesis method and application thereof. The synthesis method comprises the following steps of: mixing crude phenolsubjected to vacuum drying with a catalyst, slowly dropwise adding diisocyanate, heating the mixture to 60-100 DEG C under the protection of nitrogen, and carrying out vacuum pumping under reduced pressure to obtain an intermediate; adding concentrated H2SO4 and a solvent into the intermediate, and carrying out a reaction at 70-80 DEG C to obtain a crude product; carrying out vacuum drying on thecrude product, dissolving the crude product with ethyl acetate, respectively washing an ethyl acetate layer with water and saturated edible salt water, and drying the ethyl acetate layer with anhydrous MgSO4; distilling off ethyl acetate under reduced pressure to obtain a product, and taking the product as an oil displacement agent. With the sulfonated crude phenol Bola type surfactant adopted, the problem that other surfactant stratums are small in swept area when encountering oil, the problem that crude phenol is toxic to oil products in coal tar, and the problem that the utilization rate of crude phenol is low can be solved. The crude phenol Bola type surfactant is prepared by taking phenolic substances as raw materials under the bridge action of IPDI and is applied to the field of heavy oil recovery.

Description

technical field [0001] The invention relates to the preparation of a Bola-type surfactant and its oil displacement technology, in particular to the sulfonated crude phenol Bola-type surfactant and its synthesis method and application. Background technique [0002] Phenolic substances account for about 30% of coal tar and are harmful in oil products. However, phenolic substances are highly valuable as chemical raw materials, with relatively abundant output and low price. Using phenolic substances as raw materials to produce surfactants and other products can improve the quality of fuel oil at the same time. Therefore, with the improvement of energy security awareness and the increasing emphasis on environmental protection issues, the effective use of phenolic substances is imminent. For the surfactant flooding technology, the traditional surfactant is composed of a hydrophobic chain and a hydrophilic polar head, which has a small area on the surface of the solution, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/584C07C309/42C07C303/06
CPCC09K8/584C07C309/42C07C2601/14
Inventor 张康李旭红王晨李刚辉杨晓武
Owner SHAANXI UNIV OF SCI & TECH
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