The invention relates to a U foam ring generating device and a method. The U type foam ring generating device is composed of a foam generation part and a foam ring part, and the foam generation part is provided with a grid. The middle part of the foam ring part is provided with a drainage plate, and the foam liquid is fully contacted with the air to form a foam, and the foam is evenly distributed in the pipeline through the grid, and the heavy crude oil is obtained from the oil. When the tube enters, the foam enters the annular chamber and stabiles the flow through the drainage plate to form a stable and uniform foam thin layer, isolating heavy oil and pipe wall, obtaining annular flow with foam as outer ring, reducing heavy crude oil adhering to the pipe wall; the invention reduces the resistance of heavy crude oil transportation, and reduces wax crystal and asphaltene deposited at the bottom of the pipeline, which is favorable for reducing the energy consumption of heavy crude oil production and transportation. During the shutdown, the foam will be separated into foam layer and water layer in a short time. The foam layer prevents heavy oil from contacting with the upper surface of the pipe wall. The water layer prevents heavy oil from contacting with the lower surface, which is conducive to the restart of the pipeline system.
【技术实现步骤摘要】
一种U型泡沫环发生装置及方法
本专利技术涉及一种U型泡沫环发生装置及利用该装置生成泡沫环的方法,属于重质原油采输减阻的
技术介绍
目前,重质原油属于重点开采的能源领域,其中的胶质和沥青质等成分含量高,由于密度高、粘度大、流动性差的特征,使其极易粘附于管壁,导致在采输过程中需要提供足够的能量,用来克服流动阻力。除此之外,高含蜡原油具有高凝点,流动过程中极易析出蜡晶,导致管道堵塞,这些问题给重质原油的开采和输送都带来了很大的挑战。国内外采输重质原油的工艺主要有稀释、加热、掺活性水、掺热水、原油改质和低粘液环输送等方法。但是这些传统的重质原油减阻工艺都存在一定的弊端:稀释法要求稀油资源的供应稳定可靠;加热法的能耗高,易有凝管风险;掺活性水法和掺热水法的掺水量大,管线腐蚀和结垢严重;原油改质法对设备要求高、投资大;乳化降粘法后期需要进行破乳处理。由此,从宏观效果上看来,改善重质原油的流动特性方法中,液环输送和泡沫输送的重质原油流动减阻效果是显著的。因此,结合液环输送和泡沫输送两大减阻方法,可以生成泡沫环,研制出一种装置,既能有效降低重质原油输送阻力,又能避免上述 ...
【技术保护点】
1.一种U型泡沫环发生装置,包括:由进液管(1)和具有射孔(2)的渐缩管(3)组成的泡沫液管,由进气管(4)、掺混管(5)和成环管(6)组成的U型管;渐缩管(3)末端密封,其圆锥角度为30°,有利于泡沫液沿垂直于渐缩管壁方向,从射孔(2)均匀喷出,与空气充分混合;格网(7)使泡沫均匀分散于环形通道中;进油管(9)末端与成环管(6)末端留有一定长度,使其形成稳定的泡沫液环;进油管(9)的中间部位与成环管(6)之间装有六块梯形引流板(8),彼此间隔60°分布在环形流道内,将环形腔室均匀分割成六个独立流道,引流板与重质原油流动方向平行,能有效减少水流的径向位移,使形成的泡沫液环结 ...
【技术特征摘要】
1.一种U型泡沫环发生装置,包括:由进液管(1)和具有射孔(2)的渐缩管(3)组成的泡沫液管,由进气管(4)、掺混管(5)和成环管(6)组成的U型管;渐缩管(3)末端密封,其圆锥角度为30°,有利于泡沫液沿垂直于渐缩管壁方向,从射孔(2)均匀喷出,与空气充分混合;格网(7)使泡沫均匀分散于环形通道中;进油管(9)末端与成环管(6)末端留有一定长度,使其形成稳定的泡沫液环;进油管(9)的中间部位与成环管(6)之间装有六块梯形引流板(8),彼此间隔60°分布在环形流道内,将环形腔室均匀分割成六个独立流道,引流板与重质原油流动方向平行,能有效减少水流的径向位移,使形成的泡沫液环结构更加稳定,由于流道与成环管(6)的接触面积较大,这有利于泡沫附于...
【专利技术属性】
技术研发人员:黄婉妮,敬加强,檀家桐,扈海莉,尹然,吴雪蓓,王帅,孙杰,
申请(专利权)人:西南石油大学,
类型:发明
国别省市:四川,51
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