催化裂化油浆水洗脱固的研究

发布时间：2018-05-05 08:50

  本文选题：催化裂化油浆 + 电脱水　； 参考：《华东理工大学》2017年硕士论文

【摘要】：油浆是催化裂化工艺产生的一种副产物,其含有大量重芳烃,是一种重要的化工原料,但由于其含有催化剂颗粒,严重影响其深加工产品的质量。因此,开展催化裂化油浆脱除固体颗粒的研究具有重要意义。论文采用水洗工艺,开展油浆脱固的研究,在评选多种破乳剂的基础上,发现破乳剂SPJ-PR-2011对油浆具有很好的破乳脱水效果,经优化破乳条件后,在温度为130℃,电压为1800V,洗涤水加入量为16%,SPJ-PR-2011加入量为50μg/g时,脱水率可达到90%以上,并且油浆灰分含量由0.26%降到了 0.022%,Al+Si含量由1013.7mg/kg降至85.8mg/kg。随着破乳剂用量的增加,脱水率增加,当达到临界胶束浓度,再增加破乳剂用量,脱水效果基本不变;随着破乳温度和洗涤水用量增加,破乳脱水效果增加。采用红外光谱、核磁共振波谱、元素分析和凝胶色谱等方法,分析了破乳剂SPJ-PR-2011的分子结构,发现其是分子量为2688含EO和PO链段比为3:2的聚醚。采用Zeta电位,界面张力,全功能稳定性分析和显微粒径分析等方法,探讨了固体颗粒及破乳剂SPJ-PR-2011对模型油油水乳状液稳定性的影响,结果表明,固体颗粒增加了乳状液界面的Zeta电位,使其稳定性增加;而SPJ-PR-2011破乳剂通过降低乳状液油水界面张力,实现破乳。采用三级水洗脱固工艺,在温度为130℃,电压为1800 V,洗涤水加入量为7%,破乳剂SPJ-PR-2011用量为70 μg/g条件下,油浆经水洗后,灰分和Al+Si含量分别降低至0.018%和70.2 mg/kg,脱除率均达到93%。
[Abstract]:Slurry is a by-product produced by catalytic cracking process. It contains a large number of heavy aromatics and is an important chemical feedstock. However, because of the presence of catalyst particles, the quality of its deep processing products is seriously affected. Therefore, it is of great significance to study the removal of solid particles from FCC slurry. On the basis of selecting a variety of demulsifiers, it is found that the demulsifier SPJ-PR-2011 has a good demulsification and dehydration effect on the slurry. After optimizing the demulsifying conditions, the demulsifying agent has a good effect on the demulsification and dehydration of the slurry. After optimizing the demulsifying conditions, the temperature is 130 鈩，

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