Waste oil-based mud treatment fluid, preparation method thereof and method for treating oil-based mud

A technology of oil-based mud and treatment fluid, applied in sludge treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of resource waste, climate sensitivity, and long time for biological domestication of bacteria, etc., to achieve Realize the effect of recycling

Active Publication Date: 2021-01-19
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the thermal distillation method will produce a large amount of flammable gas after heating the waste oil-based mud. If air or other oxidizing gases enter the equipment and come into contact with high-temperature oil vapor, there will be a danger of explosion; the bioremediation method has good safety, No secondary pollution, easy management, etc., but the biological domestication of bacteria takes a long time, takes up too much land, and is sensitive to climate; because the reinjection stratum method does not completely treat the waste oil-based mud, it not only causes a waste of resources, but also exists Potential risk of polluting groundwater; chemical demulsification method can fully recover oil resources in waste oil-based mud, separated oil can be used as fuel or as base oil, but the currently used chemicals are expensive and easily cause secondary pollution

Method used

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Examples

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preparation example Construction

[0028] In the present invention, the nonionic surfactant is preferably a polyetheramine modified silicone nonionic surfactant. In the present invention, the preparation method of the polyetheramine modified silicone nonionic surfactant preferably comprises the following steps:

[0029] Mix polyether amine, catalyst and silicone for chemical grafting reaction to obtain reaction solution;

[0030] The reaction solution was added into dichloromethane, allowed to stand for stratification, and the obtained lower layer liquid was subjected to vacuum distillation to obtain a polyetheramine-modified organosilicon nonionic surfactant.

[0031] In the present invention, the polyetheramine, the catalyst and the organic silicon are preferably mixed to perform a chemical grafting reaction to obtain a reaction liquid. In the present invention, the number average molecular weight of the polyetheramine is preferably 200-3000, more preferably 230-2000, even more preferably 600. In the presen...

Embodiment 1

[0059] Select 100g of polyetheramine, which is D230 with a molecular weight of 230 as the main chain, use chloroplatinic acid as a catalyst, and add a catalyst dosage of 1.0g. When the temperature is 80°C, add 30g of methyl silicone oil drop by drop (the dropping speed is 45 drops / min), after the addition is complete, continue to stir and react at 80°C for 120min; cool to room temperature, adjust the pH to 7 with 1wt.% dilute hydrochloric acid at room temperature, and pour the resulting reaction solution into 100g of dichloromethane solution after adjustment, Pour the lower layer liquid after standing and stratifying into a rotary evaporator, and distill under reduced pressure (temperature is 25°C, pressure is 3.15kPa, time is 120min) to remove unreacted impurities to obtain polyetheramine modified silicone Ionic surfactants, counted as silicon-containing D230;

[0060] At room temperature, the silicon-containing D230 and sodium lauryl sulfate were mixed according to a mass r...

Embodiment 2

[0064] Select 100g of polyetheramine, the polyetheramine with a molecular weight of 2000 as the main chain, take chloroplatinic acid as the catalyst, add the catalyst in an amount of 1.0g, and when the temperature is 120°C, add 30g of methyl silicone oil dropwise (the dropping speed is 60 drops / min), after the addition is complete, continue to stir and react at 100°C for 120min; cool to room temperature, adjust the pH to 7 with 1wt.% dilute hydrochloric acid at room temperature, and pour the resulting reaction solution into 100g of dichloromethane after adjustment In the solution, pour the lower layer liquid after standing and stratifying into a rotary evaporator, and distill under reduced pressure (temperature is 25°C, pressure is 3.05kPa, time is 120min60s) to remove unreacted impurities to obtain polyetheramine modified Silicone nonionic surfactants are counted as silicon-containing D2000;

[0065] At room temperature, the silicon-containing D2000 and sodium lauryl sulfate ...

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Abstract

The invention provides a waste oil-based mud treatment fluid, a preparation method thereof and a method for treating oil-based mud, and relates to the technical field of waste oil-based mud. The wasteoil-based mud treatment fluid provided by the invention is prepared from the following preparation raw materials: an amphiphilic emulsifier, an auxiliary agent, inorganic salt, an oil phase componentand water, wherein the mass ratio of the amphiphilic emulsifier to the auxiliary agent is 1: 2-8; the mass ratio of the amphiphilic emulsifier to the inorganic salt is (1-3): (0.2-1.2); the mass ratio of the amphiphilic emulsifier to the oil phase component is 1: (3-8); and the mass ratio of the amphiphilic emulsifier to the water is 1: (5-20). According to the invention, the waste oil-based mudis fully demulsified by utilizing the amphiphilic emulsifier and the auxiliary agent, and the interfacial tension of the treating fluid is reduced and the agglomeration concentration of micelles is reduced by combining other raw materials, so that oil in the waste oil-based mud is effectively separated from a system, the crude oil in the waste oil-based mud is recycled, and the resource utilization of the oil-based mud is realized.

Description

technical field [0001] The invention relates to the technical field of waste oil-based mud treatment, in particular to a waste oil-based mud treatment liquid, a preparation method thereof, and a method for treating oil-based mud. Background technique [0002] Oil-based mud has complex components and contains more additives (clay, kaolin and other solid phase components with finer particle sizes are usually used to prepare oil-based mud), so it is easy to form an oil-water-solid three-phase stable system. Due to the high cost of oil-based mud, it is often used repeatedly until the performance is so bad that it can no longer be used before being discarded. In addition, waste oil-based mud has been mixed with old and new for a long time, resulting in the formation of a system with high oil content, high viscosity, and stable emulsification, which is difficult to handle. [0003] The traditional treatment methods for waste oil-based mud mainly include thermal distillation, bior...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00
CPCC02F11/00
Inventor 王作华桂召龙李毅陈新德李清方孙建成李孟杰
Owner CHINA PETROLEUM & CHEM CORP
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