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基于新型改性纤维填料的油水分离过程研究 总被引:1,自引:0,他引:1
针对含油污水设计制作了一套内置新型改性纤维填料的立式油水分离器;考察了该油水分离器进口流速和污水含油浓度对处理后出水油含量和除油效率的影响,并分析了污水含油浓度对油滴脱除粒径的影响.研究结果表明,进口流速小于2L/min时,出水含油浓度随之缓慢增加,且除油效率均在90%以上;当进口流量设定在1.54L/min,进口浓度在从25~1200mg/L内变化时,经过两级处理后油含量最低可以达到4.6mg/L.纤维填料对油滴粒径大于10μm的脱除效率达到了96%以上. 相似文献
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为了研究聚合物对水力旋流器内油滴聚结与分离效率的影响规律,以螺旋导流内锥式旋流器为研究对象,利用群体平衡模型(PBM)方法对不合聚与含聚0.5‰工况下油水两相在旋流器内的速度场、黏度场、油滴聚结、运移特性及分离效率进行数值分析,并通过实验验证.结果 表明:聚合物的加入增大了水相黏度,使油滴在旋流器内最大停留时间与轴向运动距离增加,增加了油滴碰撞聚结的机会,但降低轴心处油滴向上运动的轴向速度,使油滴无法快速从溢流口流出,最终从底流口流出,增加油水分离的难度.与不合聚时相比,含聚0.5‰工况下,轴心处的油滴粒径与含油体积分数较高,但简化分离效率由99.79%降低至94.72%.通过马尔文粒度仪对两种工况下入口与出口的油滴粒径进行测试,含聚0.5‰时溢流与底流口油滴粒径高于不合聚时,验证了模拟的准确性. 相似文献
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含油废水分离膜的研究主要集中在油水分离上,普通超滤膜无法截留含油废水中的重金属,这可能会对环境造成更大的破坏。采用共混法制备了可对含油废水和重金属实现同步处理的新型α-磷酸锆纳米颗粒/聚丙烯腈(α-ZrP-NP/PAN)混合基质膜,并对其微观形貌、表面电荷、污水净化能力、亲水性和抗污染性能进行了分析。α-ZrP-NP增强了膜表面的负电荷,同时也为混合基质膜提供了大量-OH,增强了膜的亲水性。扫描电镜和截面形貌分析结果表明,随着纳米粒子掺入,混合基质膜表面孔径和孔隙率增大。混合基质膜的纯水通量和通量恢复率分别提高到175.91 L/(m2·h)和75.66%,表明其提高了渗透效率和抗污染性能。此混合基质膜对含油废水中含油量和化学需氧量的去除效果保持在90%以上,典型重金属离子Pb2+去除率达到94.82%,其再生效率大于90%,反映了此膜c优33秀的净化能力。 相似文献
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刘玲 《现代制造技术与装备》2002,(2):27-28
在机械行业内,以电镀废水、机械含油废水和含酚废水量大面广,危害最大。文中对这三种废水的防治方法、处理效果、设备装置特点、经济效益及其应用分别进行了论述。 相似文献
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在机械行业内,以电镀废水、机械含油废水和含酚废水量大面广,危害最大。文中对这三种废水的防治方法、处理效果、设备装置特点、经济效益及其应用分别进行了论述。 相似文献
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The performance of metering the phase holdup of an oil–water two-phase vertical flow has been investigated based on the measurement of the gravity and frictional pressure drops. A U-tube, in which the same flow patterns can be obtained in downward and upward vertical flows, is designed to measure both gravity and fractional pressure drops. During the experiments, the mixture velocities of the oil and water are in the range of 0.28–4.65 m/s and the oil volume fraction from 0 to 1.0. The results show that the oil holdups calculated are satisfactory with the absolute error of ±10%. The method presented in this work can be used to verify the results of tomography due to its simplicity and therefore is sufficient enough to be applied in industry. 相似文献
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When the oil field has been exploited by long-term water-flooding, it will be in high water-content stage of production. However, it is a great challenge for high-water-content measurement due to oil droplets extremely dispersed in the water. In this paper, we developed a phase-isolation based method for high-water-content oil-water two-phase flow measurement. Phase-isolation was realized by axial-flow swirler to concentrate scattered and random oil droplets into the pipe center and change the inlet flow pattern into a particular annular flow before measuring. Owing to the axisymmetric velocity and phase distribution, the electromagnetic flow meter avoided the effect of random distribution of insulating phase, and then had a good measurement performance for total volume flow rate. Furthermore, we respectively studied using axial pressure drop, radial pressure drop and the ratio of the two pressure drops to measure water content. The results showed that the ratio of the two pressure drops not only improves the resolution of oil and water, but also effectively reduces the impact of error transfer. In the dual-parameter measurement experiment, the relative errors of total volume flow rate and water content were almost within ±5%. 相似文献
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为改善滚滑轴承的润滑,运用两相流理论对其滑块进行油气润滑设计,建立滑块的油-气两相流CFD模型,分析不同入口角度、进气速度、进油速度和润滑油黏度对流场油相分布的影响。结果表明:油-气混合润滑方式能在内外滚道接触区形成有效的润滑油膜;油气管道夹角影响油滴分布,角度过大时大量油滴会在滑块侧面上附着,角度过小时油滴会在外滚道入口处堆积,造成供油连续性不好,油膜稳定性下降;进气速度过大会降低油滴附着率,无法形成有效油膜,而进油速度过大会造成润滑油累积,出现搅油现象,因此选择合适的进气和进油速度,才能控制油滴的大小和保持润滑过程的连续性;润滑油黏度会影响油滴在滑块上的附着效果,合理地选择润滑油黏度,才能保证流场油相分布均匀。 相似文献
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为了解决传统石油开发集中计量方式难以获取单口油井油气水三相流相关参数的难题,采用流体体积和有限元分析等方法在建立该测量装置的数值仿真模型基础上对其结构参数、气液分离效果等进行了深入研究与优化,从而确定了该监测装置的最优结构参数,并研制了可以在现有集中计量环境中长期、稳定与可靠使用的一种永置式石油生产多井组单井轮巡三相流监测装置。另外,还在搭建的永置式石油生产地面多井组单井轮巡三相流多参数监测平台上开展了实验研究,实验结果表明,所研制的装置在气、液相流量5~70 m3/d,液相持水率50%~90%等混合流体下持水率、气量测量误差均小于10%,流量测量误差小于4%。仿真和实验均证明了永置式监测装置具有良好的多分相测量性能。 相似文献
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针对现有烧结台车车轮润滑缺乏成熟的润滑油自动化加注设备的问题,提出一种新型烧结台车车轮润滑油自动加注装置。对该装置的随动装置、车轮捕捉装置、自动加油枪、移动平台等部件和气动系统进行了设计分析。基于双偏心自动调整机构设计了浮动式加油枪,并对其工作原理进行理论分析。根据结构设计制造了试验样机,样机试验结果表明,所研制的烧结台车车轮润滑油自动加注装置能够实现烧结台车车轮的在线自动加油,单次加油循环用时15 s,加油量40 mL。该装置的研制为烧结生产智能化提供了核心技术和装备保障。 相似文献
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为了分析某型航空发动机轴间轴承集油结构集油效率不高的原因,采用基于VOF模型和滑移网格技术的多相流数值计算方法,建立轴承集油结构的油气两相流三维瞬态仿真模型,分析集油结构的流场和滑油分布,揭示集油结构内的滑油运动规律和集油损失的机制,并给出了滑油流量对集油效率的影响。结果表明:集油结构中形成对转流动以及涡环,集油损失的原因主要是由于滑油油柱冲击保持架壁面后飞溅形成的油滴颗粒被旋涡带入油坝与收集器之间的狭缝,进而被甩出到轴承腔,导致集油效率降低;集油结构的集油效率与滑油流量无关,仅取决于自身结构。所研究的集油结构的集油效率仅为62%,须改进集油结构,以提高其集油效率。 相似文献
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Sintered bearings which are porous in structure contain oil in the pores. However, with time the oil content of the bearing decreases as a result of leakage, evaporation etc. In order to determine the frictional characteristics of such oil-starved bearings, sintered bearings in which the oil contents were progressively decreased were prepared and tested. From the experiments it is shown that there is no substantial increase in the coefficient of friction as up to about 50% of the oil content is lost. When the amount of oil in the bearing is reduced further there is an increase in the coefficient of friction. Temperature measurements on the bearings also confirmed the above behaviour. To determine whether a bearing that has lost more than 50% of its oil content can be recharged by adding few drops to the surface of the bearing, oil was added to a bearing which was working at 42% of the initial oil content. As a result of this the oil content increased to 62% and the coefficient of friction decreased to the corresponding value. Thus it was found that it is possible to recharge an oil-starved sintered bearing by adding a few drops of oil to the bearing surface, wherever it is accessible, and thereby increasing the life of the bearing. 相似文献