Mixing device for increasing demulsification speed of extremely-viscous crude
A technology of mixing device and demulsification speed, which is applied in the equipment field of oilfield gathering and transportation dehydration process, can solve the problems of inability to achieve better demulsification and dehydration effects, inability to overcome laminar flow phenomenon, inability to mix produced liquid, etc., to achieve Improve the effect of dehydration, increase the speed of demulsification, and reduce the effect of stability
Active Publication Date: 2013-07-10
PETROCHINA CO LTD
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Problems solved by technology
At present, in the super heavy oil dehydration process in China, the spiral or baffle static mixing device is used. Although it can achieve a certain mixing effect, it cannot overcome the laminar flow phenomenon and cannot fully mix with the produced liquid. At the same time, the broken The impact strength between the emulsion and the output fluid is small, which cannot achieve good demulsification and dehydration effects
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[0015] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.
[0016] Such as figure 1 As shown, the present invention proposes a mixing device 100 for improving the demulsification speed of super-heavy oil. One side is provided with an oil outlet pipeline 3 opposite to the oil inlet pipeline 2, and the entire housing is in a closed state during operation; a transmission shaft 4 is longitudinally provided in the housing 1 from bottom to top, and an impeller 5 is arranged on the transmission shaft 4. The function of the transmission shaft 4 is to drive the impeller 5 to rotate at a high speed. Since the transmission shaft 4 is relatively long, its material is required to have good elasticity and high hardness (tensile strength > 550MPa). In this embodiment, the transmission shaft 4 is made o...
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Abstract
The invention discloses a mixing device for increasing the demulsification speed of extremely-viscous crude, and the device comprises a vertically-arranged cylindrical sealed shell, wherein an oil inlet pipeline is arranged on one side of the shell, and an oil outlet pipeline opposite to the oil inlet pipeline is arranged on the other side of the cylindrical sealed shell; a transmission shaft is longitudinally arranged in the shell from bottom to top, an impeller is arranged on the transmission shaft, the upper end of the transmission shaft penetrates out of the top of the shell and is connected with a drive device; and a guide plate is arranged in the shell and positioned between the transmission shaft and the oil inlet pipeline, a plurality of through holes are arranged on the guide plate, and the periphery of the guide plate is fixed on the inner wall of the shell. The mixing device is used for stirring an incoming liquid and an emulsion breaker by driving the impeller through a variable frequency motor, and can be used for fully mixing oil, water and the emulsion breaker so as to increase the contact chance of the emulsion breaker with an oil and water interface film to ensurethat a chemical agent is fully mixed with the incoming liquid, thus the stability of the interface film is reduced, the demulsification speed of the extremely-viscous crude is increased and the dewatering effect is improved.
Description
technical field [0001] The invention relates to equipment suitable for oil field gathering and transportation dehydration process, in particular to a mixing device for improving the demulsification speed of super heavy oil. Background technique [0002] The water content in the super-heavy oil produced liquid is relatively high. Due to the density difference between the immiscible oil and water phases, the density of oil is slightly smaller than that of water. Therefore, there is a laminar flow phenomenon during pipeline transportation, and the oil is in the upper layer of the pipeline. The water is at the bottom of the pipeline, so after the demulsifier is added to the oil pipeline, most of it enters the oil in the upper layer, and only a small part diffuses in the water layer, which is not conducive to breaking the oil-in-water emulsion at the bottom. At present, in the super heavy oil dehydration process in China, the spiral or baffle static mixing device is used. Althoug...
Claims
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IPC IPC(8): B01F7/20C10G33/04B01F27/906
CPCY02P70/10
Inventor 陈永恒张广台林军樊金明张勇张洪驰王菁菁迟洪军黄晓君许新李秀敏刘忠祥姜城魏守忠范宏岩孙振彪
Owner PETROCHINA CO LTD