Method for improving dispersibility of organic soil

A dispersive and organic soil technology, applied in the field of organic soil applications, can solve the problems of poor stability and poor dispersion performance of colloidal dispersion systems, and achieve the effects of wide application, improved dispersion and good compatibility

Inactive Publication Date: 2011-01-19
SHANDONG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at the problems of poor dispersibility of existing organic soils in non-aqueous media, especially some commercial organic soils in non-polar solvents, and poor stability of colloidal dispersion systems, and provides a method for improving the dispersibility of organic soils. Effectively improve the dispersibility and stability of organic soil in non-aqueous media, especially non-polar solvents, and obtain a stable organic soil colloidal dispersion system

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  • Method for improving dispersibility of organic soil
  • Method for improving dispersibility of organic soil
  • Method for improving dispersibility of organic soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In this embodiment, the organic soil dispersion system is first prepared, and an appropriate amount of oil-soluble nonionic surfactant is added to the organic soil dispersion system, and the dispersibility is obtained through appropriate shearing (weak shearing is used in the stirring methods in the examples). Better and more stable organic soil dispersion system, the specific process is as follows:

[0020] Disperse 0.3g of organic soil in a corresponding amount of gas-oil, and then add 0.09g of Span-80 (S80, accounting for 30% of the mass of organic soil) to the dispersion system to prepare organic soil with a mass fraction of organic soil of 2%. Earth gas oil dispersion system (2.0wt%), the mixture (total weight 15g) was electromagnetically stirred at room temperature at a speed of 300 revolutions per minute for 12 hours, then transferred to a 25ml colorimetric tube, left to stand, and the ratio was recorded for 90 minutes. The height of free oil precipitated from th...

Embodiment 2

[0026] The mass fraction of organic soil in embodiment 1 is changed from 2% to 5% (preparing organic soil mass fraction is 5% organic soil gas oil dispersion system), and Span-80 addition occupies 30% of organic soil quality by above Change to 10%, then electromagnetically stir at room temperature at a speed of 300 rpm for 30 minutes, while the rest of the conditions are the same, then transfer to a 25ml colorimetric tube, let it stand, and record for 90 minutes when free oil is precipitated from the upper part of the colorimetric tube height, and calculate the gelation rate of each system according to the method of Example 1, then the gelation rate comparison of the three organic soils without adding any additives and adding Span-80 is shown in the following table:

[0027] project

[0028] From the above data, it can be seen that under the conditions of small shearing force (small electromagnetic stirring force), short dispersion time, and a small amount of Span-80 ...

Embodiment 3

[0030] This example is an experiment on the colloidal stability of various organic soil dispersion systems.

[0031] Disperse 0.03g organic soil in the corresponding amount of gas oil, add 0.06g Span-80 (200% of organic soil mass) to the dispersion system of the experimental group to form a mixture, while the control group does not add any additives to obtain the mass fraction It is a 0.2% organic soil gas oil dispersion system (0.2wt%), and then the mixture (total weight 15g) is placed on an electromagnetic stirrer, and is electromagnetically stirred at a speed of 300 revolutions per minute at room temperature for 12 hours, and then transferred to a 25ml colorimetric In the tube, stand still, take pictures after transferring and standing for 24 hours, the photos are as follows: figure 1 As shown, the upper part is the photo when the transfer is completed, and the lower part is the photo after standing for 24 hours. for figure 1 In the upper middle photo, the organic soil in...

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Abstract

The invention provides a method for improving dispersibility of organic soil. The method comprises the following steps of: (1) taking the organic soil, organic solvent and oil-soluble nonionic surfactant; and (2) mixing the organic soil, the organic solvent and the oil-soluble nonionic surfactant in random order to form mixed solution; stirring the mixed solution at room temperature for uniform dispersion, wherein for the oil-soluble nonionic surfactant which is solid at the room temperature, the oil-soluble nonionic surfactant is stirred on the premise of ensuring the dissolution temperatureof the solid oil-soluble nonionic surfactant after being mixed with the organic soil and the organic solvent; and obtaining an organic soil colloidal dispersion system with good dispersibility and high stability after stirring for uniform dispersion. The method has simple and convenient operation, and can effectively improve the dispersion degree of the organic soil in the non-polar solvent and the stability of the dispersion system colloid, obviously shorten the dispersion time of the organic soil in the non-polar solvent, reduce the energy consumption and reduce the cost.

Description

technical field [0001] The invention relates to a method for improving the dispersibility of organic soil in a non-polar solvent and the stability of a colloid system, and belongs to the technical field of organic soil application. Background technique [0002] In order to meet the requirements of environmental protection and drilling speed, the current oil-based drilling fluid base oil tends to use less viscous mineral oil, or gas-based oil, etc. At the same time, lubricating grease, low-polarity coatings, etc. also mostly use non-polar alkanes Solvents are used as base oil solvents, but organic clays commonly used for thickening are generally poor in dispersibility in these non-polar solvents. If the organic soil preparation process is considered and improved to prepare organic soils with better dispersibility in these solvents, the process will often be complicated and industrialization will be difficult. [0003] Chinese patent document CN86105312 discloses a "Method fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/44
Inventor 孙德军孙海港刘尚营田荣剑陈忠华邓义成
Owner SHANDONG UNIV
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