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A kind of waste oil-based mud treatment liquid and preparation method thereof and method for treating oil-based mud

A technology for oil-based mud and treatment liquid, applied in the fields of sludge treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of long time for biological domestication of bacteria, expensive medicines, and pollution of groundwater, etc. To achieve the effect of resource utilization, simple and easy processing, and low production cost

Active Publication Date: 2022-08-05
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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preparation example Construction

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

[0029] Mixing the polyetheramine, the catalyst and the organosilicon to carry out a chemical grafting reaction to obtain a reaction solution;

[0030] The reaction solution is added into dichloromethane, and the layers are left to stand, and the obtained lower layer liquid is subjected to vacuum distillation to obtain a polyetheramine modified organosilicon nonionic surfactant.

[0031] In the present invention, the polyetheramine, the catalyst and the organosilicon are preferably mixed to carry out a chemical grafting reaction to obtain a reaction solution. In the present invention, the number average molecular weight of the polyetheramine is preferably 200 to 3000, more preferably 230 to 20...

Embodiment 1

[0059] Select 100g of polyetheramine as the main chain of D230 with a molecular weight of 230, use chloroplatinic acid as a catalyst, and add a catalyst amount of 1.0g. When the temperature is 80 ° C, add 30g of methyl silicone oil dropwise (the rate of addition is 45 drops / min), after the addition was completed, the reaction was continued to stir at 80°C for 120 min; cooled to room temperature, adjusted to pH 7 with 1 wt.% dilute hydrochloric acid at room temperature, and the resulting reaction solution was poured into 100 g of dichloromethane solution after adjustment, The lower layer liquid after standing and layering was poured into a rotary evaporator, and the vacuum distillation (temperature was 25 ° C, pressure was 3.15 kPa, and time was 120 min) to remove unreacted impurities to obtain polyetheramine modified silicone non-woven fabrics. Ionic surfactants, counted as D230 containing silicon;

[0060] At room temperature, the silicon-containing D230 and sodium lauryl su...

Embodiment 2

[0064] Select 100g of polyetheramine, the polyetheramine with molecular weight of 2000 as the main chain, use chloroplatinic acid as a catalyst, and add a catalyst amount of 1.0g. When the temperature is 120 ° C, add 30g of methyl silicone oil dropwise (the rate of addition is 1.0 g). 60 drops / min), after the addition was completed, the reaction was continued to stir at 100°C for 120 min; cooled to room temperature, adjusted to pH 7 with 1 wt.% dilute hydrochloric acid at room temperature, and the resulting reaction solution was poured into 100 g of dichloromethane after adjustment In the solution, the lower layer liquid after standing and stratified is poured into a rotary evaporator, and the vacuum distillation (temperature is 25° C., pressure is 3.05kPa, time is 120min60s) to remove unreacted impurities to obtain polyetheramine modification. Silicone nonionic surfactants, counted as D2000 containing silicon;

[0065] At room temperature, the silicon-containing D2000 and sod...

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Abstract

The invention provides a waste oil-based mud treatment liquid, a preparation method thereof, and a method for processing oil-based mud, and relates to the technical field of waste oil-based mud. The waste oil-based mud treatment liquid provided by the present invention includes the following preparation raw materials: amphiphilic emulsifier, auxiliary agent, inorganic salt, oil phase component and water; the mass ratio of the amphiphilic emulsifier and auxiliary agent is 1:2-8 ; the mass ratio of the amphiphilic emulsifier to the inorganic salt is 1 to 3: 0.2 to 1.2; the mass ratio of the amphiphilic emulsifier to the oil phase component is 1:3 to 8; the mass ratio of the amphiphilic emulsifier to the water The ratio is 1:5 to 20. The invention utilizes the amphiphilic emulsifier and auxiliary agent to fully demulsification of the waste oil-based mud, reduces the interfacial tension of the treatment liquid in combination with other raw materials, reduces the agglomeration concentration of micelles, and effectively separates the oil in the waste oil-based mud from the system , to realize the recovery and reuse of crude oil in waste oil-based mud, and realize the resource utilization of oil-based mud.

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 and a preparation method thereof and a method for treating oil-based mud. Background technique [0002] Oil-based mud is easy to form an oil-water-solid three-phase stable system due to its complex composition and many additives (solid phase components with finer particle size such as clay and kaolin are usually used to prepare oil-based mud). 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. In addition, the waste oil-based mud is also 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 of waste oil-based mud mainly include thermal distillation method, bioremediation method, fo...

Claims

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Application Information

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Patent Type & Authority Patents(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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