Oil sludge demulsifier and preparation method thereof

A demulsifier and oil sludge technology, which is applied in chemical instruments and methods, sludge treatment, water/sludge/sewage treatment, etc., can solve the problems of long treatment cycle, flammable and explosive, high energy consumption, etc. The effect of science, easy industrial application, and low production cost

Pending Publication Date: 2020-11-20
CHINA SPECIAL EQUIP INSPECTION & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The centrifuge dehydration method is difficult to dehydrate because the oily sludge is in an emulsified state, and it cannot really achieve the purpose of treating oily sludge
The thermal analysis method is similar to the incineration method. It also has the problems of high energy consumption and waste gas generation. It also has the problems of flammability and explosion, and the equipment is easy to coke and block.
The various agents used in the traditional thermochemical demulsification method have a certain effect on simple oily sludge, but have no obvious demulsification effect on oily sludge with complex components, high viscosity, colloids, and asphaltene.
The microbial method occupies a large area, has a long treatment cycle, is restricted by the ambient climate temperature, and can only treat oil sludge with an oil content of less than 5%, so the treatment is limited

Method used

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  • Oil sludge demulsifier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation method of oil sludge demulsifier is as follows: weigh cetyltrimethylammonium bromide, polyacrylamide and ethanol at a mass ratio of 30:40:30, and mix cetyltrimethylammonium bromide and ethanol at 60 Mix evenly at a speed of 800 rpm, cool to 40 °C, add polyacrylamide, and stir at a speed of 1600 rpm for 30 minutes at 20 °C to obtain a sludge demulsifier.

Embodiment 2

[0024] The preparation method of oil sludge demulsifier is as follows: weigh imidazoline oxide ethylene oxide propylene polymer, polyacrylamide and methanol according to the mass ratio of 9:0.5:30, and mix imidazoline oxide ethylene oxide propylene polymer and methanol at 60°C at 600rpm Mix evenly at a rotating speed, cool to 30°C, add polyacrylamide, and stir at 30°C at a speed of 1500rpm for 30 minutes to obtain a sludge demulsifier.

Embodiment 3

[0026] The preparation method of oil sludge demulsifier is as follows: weigh polyol ethylene oxide propylene oxide polymer, isopropanol, and fatty acid amide at a mass ratio of 50:20:60, and mix polyol ethylene oxide propylene oxide polymer and isopropanol at 70°C Mix evenly at a speed of 500 rpm, cool to 20°C, add fatty acid amide, and stir at a speed of 1500 rpm for 20 minutes at 20°C to obtain a sludge demulsifier.

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Abstract

The invention discloses an oil sludge demulsifier and a preparation method thereof. The invention belongs to the technical field of demulsifier preparation. The oil sludge demulsifier comprises a demulsifier main agent and a solvent, wherein the demulsifier main agent is a mixture of a surfactant and an amide organic matter; the preparation method comprises steps: uniformly mixing the surfactant and the solvent; adding amide organics, stirring to obtain a finished product; the oil sludge demulsifier disclosed by the invention is scientific in formula proportion; process is simple, manufacturing cost is low, stability is high, application range is wide, easy industrial application is achieved, the stability of the oil sludge can be broken after adding of the oil sludge demulsifier into theoil sludge; an oil phase and a water phase in the oil sludge are effectively separated; meanwhile, after a flocculating agent is added, impurities in the oil-containing sludge can be effectively settled, separation is conducted in a centrifugal mode and the like, crude oil is effectively purified, the separated crude oil can be subjected to resource recovery, sewage directly enters a water treatment system to be treated, and reduction and resourceful treatment of the oil-containing sludge can be achieved.

Description

technical field [0001] The invention relates to a demulsifier and a preparation method thereof, in particular to an oil sludge demulsifier and a preparation method thereof, belonging to the technical field of demulsifier preparation. Background technique [0002] With the development of oil and gas shale gas exploitation, petroleum processing, coking and other industries, a large amount of oily sludge is produced every year. Oil sludge is a large amount of black solid and semi-solid waste containing oil that will be produced in the process of oil extraction, gathering and transportation, refining and oily sewage treatment. The main components of oil sludge are oil, mud and water. In addition to a large amount of aged crude oil, waxy, and colloidal substances, the oil sludge contains a large amount of toxic and harmful substances such as benzene series, phenols, polychlorinated biphenyls, and dioxins, and the oil sludge also contains a large number of pathogenic bacteria and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F11/127C02F11/143
CPCC02F11/00C02F11/143C02F11/127
Inventor 赵博金栋顾宝兰李军郭静于宇新周天宇
Owner CHINA SPECIAL EQUIP INSPECTION & RES INST
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