Swill-cooked dirty oil sulfonate as well as preparation method and application thereof

A technology of oil sulfonate and waste oil, which is applied in the directions of sulfonate preparation, chemical instruments and methods, drilling composition, etc., can solve the difficulty of direct utilization of waste oil, strong corrosiveness of fuming concentrated sulfuric acid, and difficulty in popularization. application and other issues, to achieve the effects of excellent surface/interfacial tension, lower tertiary oil recovery costs, and easy scale-up operations

Inactive Publication Date: 2015-04-08
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to directly utilize waste oil in actual production
In addition, the method for synthesizing biological oil sulfonate in the prior art usually uses dichloromethane or 1,2-dichloroethane as a solvent, and the oil is sulfonated under the condition of fuming concentrated sulfuric acid, and dichloromethane or 1 , 2-dichloroethane is an environmentally unfriendly solvent, and fuming concentrated sulfuric acid is highly corrosive, so the above-mentioned prior art is difficult to popularize and apply

Method used

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  • Swill-cooked dirty oil sulfonate as well as preparation method and application thereof
  • Swill-cooked dirty oil sulfonate as well as preparation method and application thereof
  • Swill-cooked dirty oil sulfonate as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In a three-necked beaker, slowly add an aqueous solution of 100g of sodium dodecylbenzenesulfonate (1wt%) into 100g of waste oil (without purification treatment), sodium dodecylbenzenesulfonate is used as a hydrolyzed emulsifier, and the stirring rod is put down , at a temperature of 60-80°C, at a speed of 500r / min, stir for 30-50min, so that the waste oil can be evenly dispersed, and the color of the system in the beaker is light yellow; slowly drop 5g of concentrated sulfuric acid as a sulfonating agent, Control the reaction temperature to 70-80°C and stir at a speed of 500r / min. Take the first drop of concentrated sulfuric acid as the timing starting point, finish dropping the concentrated sulfuric acid within 15 to 25 minutes, then raise the temperature to 80 to 90°C, after 5 to 8 minutes, the reaction is over, and the color of the system in the beaker is black; Reduce the rotational speed to 100 r / min, and slowly add NaOH aqueous solution with a prepared mass conce...

Embodiment 2

[0029] In order to evaluate the performance of reducing interfacial tension of waste oil sulfonate of the present invention, the following experiments were carried out. The waste oil sulfonate that obtains in embodiment 1 is formulated into the aqueous solution that mass fraction is respectively 1%, 4%, 7%, 10%, 13%, 16% series concentration, and adds Xinjiang petroleum sulfonate ( KPS), so that its mass fraction is 0.1%. Adopt dataphysics spinning drop interfacial tensiometer to measure Xinjiang crude oil (crude oil density: 0.9204g / cm2) 3 ) and formation water, where the temperature is 25°C. The obtained results are shown in Table 1:

[0030] Table I

[0031]

[0032] In Table 1, Xinjiang petroleum sulfonate was added to the prepared waste oil sulfonate aqueous solution so that the mass fraction was 0.1%.

[0033] Among them, Xinjiang Petroleum Sulfonate (KPS) is a commonly used tertiary oil recovery surfactant, produced by Karamay Petrochemical Company, and its main ...

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Abstract

The invention relates to swill-cooked dirty oil sulfonate as well as a preparation method and application thereof. The preparation method comprises the following steps: dispersing swill-cooked dirty oil by using a sodium dodecyl sulfonate solution, dropping concentrated sulfuric acid, implementing sulfonic acid action for 10-30 minutes when the temperature of swill-cooked dirty oil is 70-80 DEG C, adjusting the pH value of the system to be neutral, and performing aftertreatment, thereby obtaining swill-cooked dirty oil sulfonate, wherein the mass ratio of the sodium dodecyl sulfonate solution to the swill-cooked dirty oil to the concentrated sulfuric acid is (15-25):(15-25):1. The preparation method provided by the invention is gentle in reaction condition, simple and convenient to operate and easy in operation amplification, the reaction yield can be increased, and the prepared swill-cooked dirty oil sulfonate has excellent function of reducing the surface/interface tension, and can be prepared into a solution with a certain concentration as an oil-displacing agent which is used in tertiary oil recovery.

Description

technical field [0001] The invention relates to waste oil sulfonate and its preparation method and application, belonging to the field of oil field chemistry and interface chemistry. Background technique [0002] With the rapid development of the global economy, society's demand for energy is getting higher and higher. It is necessary for the society to use certain scientific and technological means to extract oil that is difficult to develop. Tertiary oil recovery technology is one of the research hotspots, and surfactant flooding is the key technology for tertiary oil recovery. At present, surfactants used in tertiary oil recovery mainly include petroleum sulfonates, petroleum carboxylates, heavy alkylbenzene sulfonates, lignin sulfonates, and synthetic alkylbenzene sulfonates. These sulfonates have high environmental toxicity, poor biodegradability, are not friendly to the environment and are expensive. At the same time, these oil displacement agents widely used in vari...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C309/62C07C303/32C09K8/584
Inventor 许可刘卫东常进
Owner PETROCHINA CO LTD
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