Electric-coagulation oil-water-sedimentation separation device
A technology of sedimentation separation and electrocoagulation, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., which can solve the problems of difficult separation of solid impurities.
Active Publication Date: 2014-01-22
PETROCHINA CO LTD +2
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Problems solved by technology
[0003] Aiming at the change of water quality characteristics of produced water in the late stage of oilfield development, especially the water produced by chemical flooding for tertiary oil recovery, which makes it difficult to separate the produced water, oil, water and solid impurities, the invention provides a medium electric condensate oil-water sedimentation separation device
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[0009] The present invention will be further described below in conjunction with accompanying drawing:
[0010] Such as figure 1 As shown, the electrocoagulation oil-water sedimentation separation device includes a horizontal tank body, which is divided into a liquid inlet heating buffer zone 3, an electrostatic separation zone 4, an inclined plate degreasing zone 5, an air flotation zone 6, and a water outlet buffer zone in turn by a partition 9. The air flotation area 6 is divided into an air flotation contact area 7 and an air flotation separation area 8, wherein an exhaust pipe 10 is arranged on the top of the tank body, and an oil discharge pipe 15 is arranged on the upper part of the tank wall. A hot water pipe 13 and a return pipe 14 are arranged near the oil layer; a perforated mud discharge pipe 12 is arranged in the lower part of the tank, and is connected to the mud discharge header 17 through a valve, and is respectively installed in the water inlet heating buffer ...
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The invention relates to an electric-coagulation oil-water-sedimentation separation device used for carrying out oil-water-impurity separation of oil field produced water. The device comprises a horizontal tank body. The inside of the tank boxy is sequentially divided into an inlet water heating buffering zone, an electrostatic separation zone, an inclined plate oil-removing zone, an air floatation zone, and an outlet water buffering zone. The air floatation zone is divided into an air floatation contact zone and an air floatation separation zone. An air-discharge pipe is arranged on the top of the tank body. An oil-discharge pipe is arranged on the upper part of the tank wall. A hot water pipe and a water return pipe are arranged at reservoir close to the oil-discharge pipe. A perforated sludge-discharge pipe is arranged on the lower part in the tank, and is connected with a sludge-discharge manifold through a valve. Waste-discharge pipes are respectively arranged on pipe lower walls corresponding to the inlet water heating buffering zone, the electrostatic separation zone, the inclined plate oil-removing zone, the air floatation zone, and the outlet water buffering zone. The waste-discharge pipes are connected to the sludge-discharge manifold through valves. With the processing of the device, effective oil-water-solid impurity separation can be performed to water, and the water can satisfy an inlet water quality standard requirement of the next stage of filtering.
Description
technical field [0001] The invention relates to an oil-water separation treatment device for produced water in an oil field, in particular to an electrocoagulation oil-water sedimentation separation device capable of realizing the sedimentation and separation of oil, water and impurities in an oil field production. Background technique [0002] As the periphery of the oilfield enters the late stage of high water cut development, due to the implementation of water injection and chemical flooding, the oily sewage produced in some blocks generally contains polymers, resulting in changes in the water quality characteristics of the produced water, mainly manifested in the increase in the viscosity of the sewage As the degree of emulsification increases, it is difficult for oil droplets to gather and separate, and the suspended solid particles become finer. The existing gravity settling tank is not suitable, the effect of sedimentation and separation is poor, and the treatment effi...
Claims
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Inventor 夏福军冯英明王庆吉国胜娟赵洪彬
Owner PETROCHINA CO LTD