缓释型减阻剂的研究
发布时间：2018-12-30 12:51
【摘要】：为了减小原油在管道流动时产生的摩擦阻力,增加原油的输出量,减阻剂被广泛应用于原油运输过程。减阻剂在实际使用中,存在着一些问题,有待解决。目前,减阻剂在管道内湍流状态下流动时会发生机械降解,从而逐渐降低甚至失去减阻效率这一问题还需要人们进一步的探索。减阻剂在工业应用中,为了能够达到减阻剂的最佳减阻增输效果,每次通过高剪切区域后就需要再对输油管道进行加剂。为了中途能够加入减阻剂,需要设置加剂站点。这样不仅大大增加了减阻剂的用量,还要消耗更多的人力物力,影响了其经济可行性。本文针对已经合成的减阻剂进行分析优化。提出缓释型减阻剂的研究,使减阻剂具有缓释效果,可以提高减阻剂抗剪切性从而延长减阻剂使用时间,减少减阻剂注入装置站点,能够有效的节约成本。首先根据溶度参数、相容性、不溶油性及熔点的分析,以及高分子材料的无毒性、环保及经济性考虑,选择合适的缓释剂。本文主要采用的缓释剂是聚乙烯(PE)、聚丙烯(PP)、乙烯-醋酸乙烯共聚物(EVA)。试验采用熔融共混法制备不同的缓释型减阻剂,制备的过程中,还探究加工温度对减阻率的影响。分析发现当减阻剂被加热温度高于130℃时,减阻率明显受到影响,高于160℃时减阻率下降至几乎为零。因此在熔融加热制备缓释型减阻剂时,温度最高不能超过130℃。其次,采用重量法以及减阻率测定反算法计算缓释率,并评价缓释效果。同时,制备减阻剂与缓释剂不同比例的缓释型减阻剂,计算缓释效率,找出比例与缓释率的关系。
[Abstract]:In order to reduce the friction resistance of crude oil in pipeline flow and increase the output of crude oil, drag reducer is widely used in crude oil transportation process. There are some problems in the application of drag reducing agent, which need to be solved. At present, the drag reducer will degrade mechanically when it flows in the turbulent state in the pipeline, which will gradually reduce or even lose the drag reduction efficiency, which still needs to be further explored. In the industrial application of drag reducing agent, in order to achieve the best drag reduction and transportation effect of drag reducing agent, it is necessary to add agent to oil pipeline after passing through the high shear region every time. In order to be able to add drag reducing agent midway, need to set up a dosing station. This not only greatly increased the amount of drag reducing agent, but also consumed more manpower and material resources, which affected its economic feasibility. In this paper, the synthetic drag reducing agent is analyzed and optimized. The research of slow release drag reducing agent is put forward to make drag reducing agent have slow release effect, which can improve the shear resistance of drag reducing agent, prolong the use time of drag reducing agent, reduce the injection site of drag reducing agent, and save the cost effectively. Firstly, according to the analysis of solubility parameter, compatibility, insoluble oil property and melting point, as well as the nontoxic, environmental protection and economic considerations of polymer materials, suitable slow-release agents were selected. The main sustained-release agent used in this paper is polyethylene (PE), polypropylene (PP), ethylene vinyl acetate copolymer (EVA). Different slow-release drag reducers were prepared by melt blending method. During the preparation, the effect of processing temperature on drag reduction rate was also explored. It is found that the drag reduction rate is obviously affected when the heating temperature of drag reducer is higher than 130 鈩，
本文编号：2395603
[Abstract]:In order to reduce the friction resistance of crude oil in pipeline flow and increase the output of crude oil, drag reducer is widely used in crude oil transportation process. There are some problems in the application of drag reducing agent, which need to be solved. At present, the drag reducer will degrade mechanically when it flows in the turbulent state in the pipeline, which will gradually reduce or even lose the drag reduction efficiency, which still needs to be further explored. In the industrial application of drag reducing agent, in order to achieve the best drag reduction and transportation effect of drag reducing agent, it is necessary to add agent to oil pipeline after passing through the high shear region every time. In order to be able to add drag reducing agent midway, need to set up a dosing station. This not only greatly increased the amount of drag reducing agent, but also consumed more manpower and material resources, which affected its economic feasibility. In this paper, the synthetic drag reducing agent is analyzed and optimized. The research of slow release drag reducing agent is put forward to make drag reducing agent have slow release effect, which can improve the shear resistance of drag reducing agent, prolong the use time of drag reducing agent, reduce the injection site of drag reducing agent, and save the cost effectively. Firstly, according to the analysis of solubility parameter, compatibility, insoluble oil property and melting point, as well as the nontoxic, environmental protection and economic considerations of polymer materials, suitable slow-release agents were selected. The main sustained-release agent used in this paper is polyethylene (PE), polypropylene (PP), ethylene vinyl acetate copolymer (EVA). Different slow-release drag reducers were prepared by melt blending method. During the preparation, the effect of processing temperature on drag reduction rate was also explored. It is found that the drag reduction rate is obviously affected when the heating temperature of drag reducer is higher than 130 鈩，
本文编号：2395603
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