糠醛抽出油生产芳烃溶剂油的研究

Study on Aromatic Solvent Naphtha Refined from Furfural Extract Oil

关键词:  抽出油  芳烃溶剂油  糠醛  剂油比  抽提温度  分析与评价

Key words:  extract oil  aromatic solvent naphtha  furfural  extracting temperature  solvent-oil ratio  analysis and evaluation

摘要:

利用大庆炼油厂减二、减四线糠醛抽出油为原料,研究了糠醛再抽提—减压蒸馏切割法制备芳烃溶剂油的工艺条件。主要考察了剂油比、抽提温度对抽出油收率以及芳烃含量的影响,研究结果表明:减二线糠醛抽出油在剂油比为2.0∶1,抽提温度为60℃的最佳工艺条件下,抽出油收率达到52.3%,其中芳烃含量80.6%;减四线糠醛抽出油在剂油比为3.0∶1,抽提温度为70℃的最佳工艺条件下,抽出油的收率达到55.1%,其中芳烃含量76.8%;同时对糠醛再抽提的抽出油进行减压蒸馏,并对得到的不同馏分油分析和评价,指标达到芳烃溶剂油的使用标准。

Abstract:

The process condition of preparation of aromatic solvent naphtha using furfural extraction-vacuum distillation is studied and the furfural extract oil of the second line and the fourth line of distillation of Daqing refinery is used as feedstock.The influence of extracting temperature and solvent-oil ratio on both the yield of product and aromatic content is investigated. Results show that: when the solvent-oil ratio is 2.0∶1,temperature is 60℃,product’s yields and aromatic content of the second line of distillation reach 52.3% and 80.6% respectively;when the solvent-oil ratio is 3.0∶1,temperature is 70℃,product’s yields and aromatic of the fourth line of distillation reach 55.1% and 76.8% respectively.The products are analyzed and evaluated.The index of the obtained aromatic solvent naphtha could meet the requirements of trade standard JSBR-1712.