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Ultrasonic treatment method and device of oil field sand-containing oil sludge

A technology for ultrasonic treatment, sand and oil sludge, applied in the direction of sludge treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of complex treatment process, difficult separation of mud, sand and water, long treatment time, etc., to achieve The effect of reducing investment and operating costs, improving separation efficiency, and concentrating radiation energy

Inactive Publication Date: 2014-07-02
WUHAN GLT ENERGY & ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, ultrasonic treatment is also used to treat sandy oil sludge, but the treatment capacity is limited, the treatment time is long, the treatment process is complicated, and the effect is poor.
[0009] For example, Chinese patent 200320126412.7 reports that it is an oil sludge sand treatment device, and its ultrasonic transducer is in a reactor, mainly for cleaning, and the ultrasonic field is unevenly distributed; in addition, it is difficult to separate mud, sand and water in a reactor
Chinese patent 200610046818.2 reports the treatment process and equipment of oily mud sand. Its ultrasonic transducers are evenly distributed on the inner wall of the reactor, but it does not specify the specific distance of the transducers. The distance is too far, that is, the diameter of the reactor is greater than 1m. The effect is basically reduced to zero in the middle area, the irradiation time is very long, and the treatment capacity is limited; moreover, the treatment process route is long, involving seven processes
In the ultrasonic oily sludge treatment process reported in Chinese patent 200710021086.6, the ultrasonic irradiation direction is from the bottom up, similar to ultrasonic emulsification or cleaning devices, and the ultrasonic irradiation time is longer; and the separation of mud and sand adopts gravity settlement, which takes a longer time
Chinese patent 201010147313.1 reported that low-frequency ultrasound and high-frequency ultrasound are used to treat oily mud sand, and the ultrasonic irradiation time is 20-60 minutes, but the direction of ultrasonic irradiation is not given, and the ultrasonic effect cannot be estimated; and no specific mud-water separation scheme is given.

Method used

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  • Ultrasonic treatment method and device of oil field sand-containing oil sludge
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  • Ultrasonic treatment method and device of oil field sand-containing oil sludge

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Experimental program
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Effect test

Embodiment 1

[0038] 1) Ultrasonic conditioning of sandy sludge: Mix water and sandy sludge at 80°C, the mass ratio of water to sandy sludge is 5:1, and then add alkylphenol polyoxyethylene ether solution and AE- 1910 solution, alkylphenol polyoxyethylene ether is 0.03% of the mass of sand-containing oil sludge raw material, AE-1910 is 0.03% of the mass of sand-containing oil sludge raw material, after mixing evenly, perform ultrasonic treatment in ultrasonic equipment at 80°C for 0.5min, Wherein, the alkyl chain of the added alkylphenol polyoxyethylene ether is C 12 The alkyl group, the addition number of ethylene oxide is 6;

[0039] 2) Liquid-solid separation: put the above-mentioned mixture after ultrasonic conditioning into a screw dehydrator at 80°C to separate the mud phase from the liquid phase, the separated mud phase is transported outside, and the separated liquid phase enters the oil-water separation device ;

[0040] 3) Oil-water separation: Put the separated liquid phase int...

Embodiment 2

[0043] 1) Ultrasonic conditioning of sandy sludge: Mix water and sandy sludge at 70°C, the mass ratio of water to sandy sludge is 2:1, and then add alkylphenol polyoxyethylene ether solution and PFA- 8311 solution, alkylphenol polyoxyethylene ether is 0.03% of the mass of sandy sludge raw material, PFA-8311 is 0.05% of the mass of sandy sludge raw material, after mixing evenly, ultrasonic treatment is carried out in ultrasonic equipment at 70 ° C for 3 minutes, of which , the alkyl chain of the added alkylphenol polyoxyethylene ether is C 12 The alkyl group, the addition number of ethylene oxide is 10;

[0044] 2) Liquid-solid separation: Put the above-mentioned mixture after ultrasonic conditioning into the screw dehydrator at 60°C to separate the mud phase from the liquid phase, the separated mud phase is transported outside, and the separated liquid phase enters the oil-water separation device ;

[0045] 3) Oil-water separation: Put the separated liquid phase into a verti...

Embodiment 3

[0048] 1) Ultrasonic conditioning of sandy sludge: Mix water and sandy sludge at 80°C, the mass ratio of water to sandy sludge is 5:1, and then add alkylphenol polyoxyethylene ether solution and PFA- 8311 solution, alkylphenol polyoxyethylene ether is 0.02% of the mass of sand-containing oil sludge raw material, PFA-8311 is 0.02% of the mass of sand-containing oil sludge raw material, after mixing evenly, perform ultrasonic treatment in ultrasonic equipment at 70°C for 0.5min, Wherein, the alkyl chain of the added alkylphenol polyoxyethylene ether is C 9 The alkyl group, the addition number of ethylene oxide is 9;

[0049] 2) Liquid-solid separation: Put the above-mentioned mixture after ultrasonic conditioning into the screw dehydrator at 60°C to separate the mud phase from the liquid phase, the separated mud phase is transported outside, and the separated liquid phase enters the oil-water separation device ;

[0050] 3) Oil-water separation: Put the separated liquid phase ...

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Abstract

The invention discloses an ultrasonic treatment method and an ultrasonic treatment device of oil field sand-containing oil sludge. A separation method comprises the steps of: (1) sand-containing oil sludge ultrasonic modulation; (2) liquid-solid separation; and (3) oil-water separation. An ultrasonic device comprises a cylinder, an ultrasonic generation device, an ultrasonic controller arranged in the ultrasonic generation device, and ultrasonic transducers matching the ultrasonic generation device. The ultrasonic transducers are arrayed and are uniformly distributed on the two ends of the cylinder. A feeding port and a discharging port are respectively arranged on the top and the bottom of the cylinder. A feeding direction is perpendicular to an ultrasonic emission direction. According to the invention, the sand-containing oil sludge is treated by both an ultrasonic effect and reagents. After the ultrasonic-reagent treatment, water and oil are separated from a solid phase, such that oil-water separation efficiency can be greatly improved. The feeding direction is perpendicular to the ultrasonic emission direction, and the ultrasonic device runs on line. Ultrasonic field radiation energy is concentrated, and an irradiation time is short, such that sand-containing oil sludge can be subjected to large-scale industrial processing.

Description

technical field [0001] The invention relates to a method for purifying sandy oil sludge, in particular to an ultrasonic treatment method and equipment for oilfield sandy oily sludge. Background technique [0002] A large amount of oily sludge will be produced in the process of oil recovery and gathering and transportation in the oil field, including the mud and sand carried by the output fluid of the oil production well, the sludge formed by the recovery of ground crude oil, and the sludge produced by the gathering and transportation treatment system. The hazards caused by sandy sludge in oil fields are various, mainly polluting the surrounding environment, endangering the health of animals, plants and humans, increasing system maintenance costs and increasing the burden of sewage discharge on enterprises. [0003] The main pollutant in oily sludge is petroleum, which is a complex mixture of hydrocarbons and a small amount of other organic matter. Petroleum has different de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/00
Inventor 余国贤李海峰潘威晋梅吴宏观
Owner WUHAN GLT ENERGY & ENVIRONMENTAL TECH CO LTD