CAJ | 학술논문

对测定原油沥青质含量的3种分离方法(离心法、抽滤法、过滤法)进行对比，观察到抽滤法在安全健康、效率及重复性等方面具有明显优势。采用激光纳米粒度分析仪对3种分离方法的残液进行了粒度分析，结果表明，过滤法将导致较多的沥青质颗粒的损失，造成测量结果偏小。在此基础上，对抽滤法测试流程中涉及的剂油比、样品静置时间、取样量等影响因素进行优选，确定出适宜剂油比为40 mL/g、静置时间30 min、取样质量1.0 g。与SY/T 7550—2004标准方法相比，采用多孔滤膜抽滤法测定原油沥青质含量，推荐的参数合理，测试精度较高。
대측정원유력청질함량적3충분리방법(리심법、추려법、과려법)진행대비，관찰도추려법재안전건강、효솔급중복성등방면구유명현우세。채용격광납미립도분석의대3충분리방법적잔액진행료립도분석，결과표명，과려법장도치교다적력청질과립적손실，조성측량결과편소。재차기출상，대추려법측시류정중섭급적제유비、양품정치시간、취양량등영향인소진행우선，학정출괄의제유비위40 mL/g、정치시간30 min、취양질량1.0 g。여SY/T 7550—2004표준방법상비，채용다공려막추려법측정원유력청질함량，추천적삼수합리，측시정도교고。
The three separation methods (centrifugation,filtration and suction microfiltration)for measuring the asphaltenes content in crude oil were compared in this work.The suction microfiltration method was found having significant advantages in operation-safety,separation-efficiency and repeatability in measured values.In order to find the difference among these three methods,the residual particles in the supernatant or filtrate was measured using a laser particle analyzer.The results show that,the filtration method will result in more loss of asphaltenes particles than other methods.Several factors has been optimized for the suction method such as the blending time (30 min),the ratio of precipitant to oil (40 mL/g),and the sampling mass (1.0 g).Compare with the standard SY/T 7550—2004,the optimized measurement conditions in this study are reasonable and the test accuracy is acceptable.