共查询到19条相似文献,搜索用时 656 毫秒
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开发了一种水辅助溶剂法从油砂中提取沥青的技术。该方法通过在油砂固相与有机溶剂间介入水层提取油砂中的沥青。以内蒙古扎赉特旗油砂矿为研究对象,考察了温度、剂砂质量比、提取时间、甲苯在复合溶剂中的含量及溶剂的种类与性质对沥青回收率高低的影响,结果表明:最佳提取条件为提取温度50℃,剂砂质量比1∶1,提取时间25min。沥青回收率与提取溶剂的性质紧密相关,水层介入有效降低了固体微粒组分在有机相中的含量,且便于后续的有机相与泥砂相的分离。通过对各种溶剂提取的沥青进行组分分析,发现各种溶剂对沥青提取能力的差异性源于溶剂的化学组成和结构不同。本文相关研究结果对溶剂法提取油砂中沥青技术及溶剂种类的选择具有指导作用。 相似文献
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油砂作为非常规能源矿产,在未来的能源矿产勘探中地位显得日趋重要。库车坳陷地区的巴什基奇克油砂矿点位于库车坳陷北部区域,整体属单斜构造带,位于库车县的俄霍布拉克煤矿附近,油砂层发育在侏罗系克孜勒努尔组,油砂累积厚度7m左右,厚度稳定,新鲜面颜色较深,含油率较高,油味刺鼻。本文专门对巴什基奇克油砂地质特征进行了浅析,希望能有助于后期关于该方面的勘探工作。 相似文献
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油砂作为一种储量丰富的非常规石油资源,越来越受到世界各国的广泛关注。对于油砂的加工利用,其前提就是油砂沥青的分离,因此对其技术的研究十分必要。本文首先介绍了油砂的组成及分类,然后着重对几种主要油砂分离技术(热水洗法、有机溶剂萃取法、超临界流体萃取法、超声波辅助萃取法、离子液体萃取法和热解干馏法)的优缺点进行了汇总,并详细分析了它们各自的分离流程。其中,热水洗法、有机溶剂萃取法和热解干馏法是目前研究相对成熟的3种方法,而其他方法虽然分离效果相对高,但是对工艺条件和设备的要求较高,导致较高的投资和运行成本,因此还需要对这些油砂沥青分离工艺进行更加深入的研究,以满足工业化应用的要求。最后,对油砂沥青分离技术的发展前景进行了展望。 相似文献
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2006—2009年,中国石油勘探开发研究院廊坊分院在准噶尔盆地西北缘风城地区开展了油砂资源勘探和水洗分离工艺技术研究,落实该区油砂油可采资源量5498万t,平均含油率为7.1%~10%,分布于白垩系和侏罗系,厚度80—140m,油砂顶层埋深在50~90m,针对该区油砂特点开展了油砂水洗分离机理研究,成功研制了该区油砂水洗分离剂配方,该配方药剂浓度在4%,温度85℃的情况下,分离率达到了90%。在系列研究的基础上,完成了该区年处理1万t油砂的试验现场建设,开展油砂现场分离试验,常态运行收油率达90%,水洗工艺技术及装备研发取得成功。 相似文献
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为了提高油层动用程度,辽河油田采取了以合理划分与组合开发层系为基础,以同井分层注水为主,分层监测、分层改造、分层堵水工艺技术相结合的一整套分层开采技术,有效地发挥了多油层的生产能力。实现了老油藏连续多年采油速度高于2%,已采出可采储量的67%,有效地控制了老油藏产量递减。 相似文献
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《分离科学与技术》2012,47(4):341-362
Abstract Solid-liquid separation is often difficult to achieve when the solids are finely divided. When the liquid involved is a hydrocarbon, the economics of any process involving such a separation will often depend on the ease and efficiency of liquid recovery. A process is described in which an enhanced solid-liquid separation is achieved by means of a size enlargement technique requiring agitation with a second immiscible liquid, which preferentially wets the solid surface. Potential applications for such a process include removal of ash particles in coal liquifaction and separation of solids from solvent extracted oil-sands. In this work a model system has been used in an attempt to better understand the process mechanics and the factors which affect the efficiency of liquid separation. 相似文献
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An important aspect of solvent extraction processes rests in the ability to effect a satisfactory separation of the phases on completion of extraction. In previous work the solvent extraction of bitumen from Alberta oil-sands has been described in detail. This work extends the study to describe the effect of changes in the extraction process on a subsequent separation step. A comparison is drawn between a conventional screening operation and a separation based on the spherical agglomeration process. The results show that in order to achieve an optimum overall process the conditions in the extraction mill must be carefully selected. 相似文献
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针对乐安油田草27地区Ng2薄层超稠油开发动用的不利因素,利用CMG数值模拟软件,重点对开发方式、井网参数开展研究,确定了应用水平井CO2辅助蒸汽吞吐开发,后期适时转蒸汽驱,动用极限厚度3m,采用交错式注采井网布井等开发技术界限。通过产能建设实践,取得了新井初产平均达10.4t/d的好效果,为同类边际稠油储量有效开发动用提供了经验。 相似文献
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P. Juliano P. Swiergon K. H. Lee P. T. Gee P. T. Clarke M. A. Augustin 《Journal of the American Oil Chemists' Society》2013,90(8):1253-1260
The effects of ultrasonic standing waves on palm oil separation of ex-screw press feed from the mesocarp of the palm oil fruit, oil recovery and oil quality were determined. The ex-screw press feed at 85 °C was pumped simultaneously into two identical vessels. One vessel was the control (non-ultrasound) and the other vessel (ultrasound) was fitted with two 400 kHz transducer plates operating at 13.4 kJ/kg, which were placed in direct contact with the feed. Oiling-off by gravity settling occurred at faster rates after sonication. The total recoverable oil after 30 min gravity settling and upon centrifuging the underflow sludge (remaining colloidal fraction) at 1000×g was higher after sonication. Total recoverable oil was 30.7 ± 2.9 % and 43.5 ± 8.6 % (w/w original feed basis) for the non-sonicated and sonicated samples respectively. Sonication reduced the oil content of the sludge ex-centrifuge, demonstrating that higher recovery of palm oil was obtained with ultrasound application. Sonication did not affect the DOBI (deterioration of bleachability index) value, and vitamin E and free fatty acid contents of the separated oil. High-frequency ultrasound enhances the separation rate of palm oil and increases oil recovery without compromising oil quality. 相似文献
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驱油剂在双河油砂上的静态吸附研究 总被引:6,自引:0,他引:6
采用静态吸附法研究了驱油剂OCS(石油磺酸盐)和HPAM(部分水解聚丙烯酰胺)在河南油田双河油砂上的吸附特性,求出了在使用浓度下的表观静态吸附量和饱和吸附量,并用Langm u ir和F reund lich公式对其吸附趋势进行了预测,发现OCS和HPAM都具有典型的单分子层的吸附规律。 相似文献
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Pinhua Li Lei Wang Lei Zhang Guan‐Wu Wang 《Advanced Synthesis \u0026amp; Catalysis》2012,354(7):1307-1318
A highly efficient, air‐ and moisture‐stable and easily recoverable magnetic nanoparticle‐supported palladium catalyst has been developed for the Suzuki, Sonogashira and Heck reactions. A wide range of substrates was coupled successfully under aerobic conditions. In particular, the performance of the magnetic separation of the catalyst was very efficient, and it is possible to recover and reuse it at least eight times without significant loss of its catalytic activity. 相似文献