Separation method and device of polymer-containing oil sludge

A separation method and oil sludge accumulation technology, applied in chemical instruments and methods, sludge treatment, water/sludge/sewage treatment, etc., can solve the problems of long treatment time, long irradiation time, complicated treatment process, etc., and achieve reduction Stabilization, reduction of adhesion, and low solid phase oil content

Inactive Publication Date: 2013-01-02
WUHAN GLT ENERGY & ENVIRONMENTAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, ultrasonic treatment is mainly used to treat sandy oil sludge or ordinary landed oil sludge or tank bottom oil sludge, but the treatment capacity is limited, the treatment time is long, the treatment process is complicated, and the effect is poor.
[0007] 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 distribution is uneven
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 processing capacity is limited
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
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
[0008] Moreover, from the current patent literature and journal literature, there is no report on the use of ultrasonic on-line equipment in conjunction with chemicals to treat crude oil containing oil sludge recovered

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  • Separation method and device of polymer-containing oil sludge
  • Separation method and device of polymer-containing oil sludge
  • Separation method and device of polymer-containing oil sludge

Examples

Experimental program
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Effect test

Embodiment 1

[0040] 1) Ultrasonic gel breaking of oily sludge: mix water and oily sludge at 90°C, the mass ratio of water to oily sludge is 1:1, then add potassium persulfate solution to the mixture, and over Potassium sulfate is 0.1% of the quality of the raw material containing poly-oil sludge, after mixing evenly, carry out ultrasonic treatment for 0.2min;

[0041] 2) Ultrasonic cleaning: Add alkylphenol polyoxyethylene ether solution and SP169 solution to the above-mentioned mixture of oily sludge containing polyoxyethylene after ultrasonic gel breaking. 0.03% of the mass of the raw material of poly oil sludge, after mixing evenly, carry out ultrasonic treatment at 90°C for 0.2min; wherein, the alkyl chain of the added alkylphenol polyoxyethylene ether is C 8 The alkyl group, the addition number of ethylene oxide is 5;

[0042]3) Static separation: The above ultrasonically cleaned mixture was left to settle at 90°C for 10 minutes, the upper layer was the separated crude oil, the lower...

Embodiment 2

[0045] 1) Ultrasonic gel breaking of oily sludge: mix water and oily sludge at 80°C, the mass ratio of water to oily sludge is 2:1, then add hydrogen peroxide to the mixture, hydrogen peroxide contains H 2 o 2 2% of the mass of the raw material containing poly-oil sludge, after mixing evenly, perform ultrasonic treatment for 0.2min;

[0046] 2) Ultrasonic cleaning: Add alkylphenol polyoxyethylene ether solution and PFA-8311 solution to the above-mentioned mixture containing oil sludge after ultrasonic gel breaking, the alkylphenol polyoxyethylene ether solution is 0.03% of the mass of oil sludge containing raw material, PFA-8311 is 0.005% of the mass of the raw material containing poly oil sludge. After mixing evenly, ultrasonic treatment is carried out at 80°C for 3 minutes; the alkyl chain of the added alkylphenol polyoxyethylene ether is C 12 The alkyl group, the addition number of ethylene oxide is 10;

[0047] 3) Static separation: The above ultrasonically cleaned mixtu...

Embodiment 3

[0050] 1) Ultrasonic gel breaking of oily sludge: mix water and oily sludge at 60°C, the mass ratio of water to oily sludge is 5:1, then add sodium persulfate solution to the mixture, and overheat in the sodium persulfate solution Sodium sulfate is 0.4% of the quality of the raw material containing poly-oil sludge, after mixing evenly, carry out ultrasonic treatment for 5 minutes;

[0051] 2) Ultrasonic cleaning: Add alkylphenol polyoxyethylene ether solution and BP-2040 solution to the above-mentioned mixture of oily sludge after ultrasonic gel breaking. The amount of -2040 is 0.02% of the mass of the raw material containing poly oil sludge. After mixing evenly, ultrasonic treatment is carried out at 60°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 6;

[0052] 3) Static separation: the above ultrasonically cleaned mixture was left to settle at 60°C for 40 minutes, the upp...

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Abstract

The invention discloses a separation method and a separation device of polymer-containing oil sludge. The separation method comprises the steps of: (1) ultrasonic gel breaking of the polymer-containing oil sludge; (2) ultrasonic cleaning; and (3) standing 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, polymer degradation is enhanced by using ultrasonic, stabilization of the polymer upon the oil-water-solid phase is reduced, and separation efficiency is 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 polymer-containing oil sludge can be subjected to large-scale industrial processing.

Description

technical field [0001] The invention relates to a method for purifying oil sludge containing poly, in particular to a separation method and equipment for oil sludge containing poly. Background technique [0002] With the increasing use of polymer flooding in recent years, a type of sludge with very stable properties is produced in the process of oil production, that is, polymer-containing sludge, which belongs to tank bottom sludge. Polymer-containing oil sludge is produced in the case of polymer flooding, which is paraffin in petroleum, water treatment agent added in the process of producing fluid treatment, polyacrylamide (HPAM) and asphaltenes remaining in produced fluid, etc. The components interact to form a very stable network structure, wrapping oil droplets, soil, heavy metal salts, mechanical impurities, sand grains, etc. in the production fluid to form a stable viscous emulsion. Due to the poor specific gravity, the oil-containing sludge naturally settles and accu...

Claims

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Application Information

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Patent Type & Authority Applications(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
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