酮苯脱蜡中试装置和试验

A Pilot Plant on Study of Solvent Dewaxing

建立了一套酮苯脱蜡连续化中试装置,该装置吸收并采纳了工业实际情况,包括结晶系统、过滤系统、溶剂回收系统、冷冻系统以及仪表显示和控制系统.运用该装置对阿曼减三和阿曼减四精制油进行脱蜡试验研究,探讨脱蜡过程中溶剂加入位置、溶剂混合比和溶剂/油料稀释比对脱蜡效果的影响.试验结果表明,所建立的装置运行平稳,所获得的石蜡晶体以片状为主,所得到的脱蜡油的倾点和收率数据具有规律性和合理性.该研究工作为进一步利用该套装置对油料脱蜡进行系统研究以指导工业生产奠定了基础.

A continuous pilot plant was established to study the dewaxing process by butanone and toluene mixture solvents for different refined oils.Considered and adopted some features from industry equipments,this plant consists of the crystallization system,the filtration system,the solvent recovery system,the cooling system and the control system with a capacity of 1~2 L/h feeding oils,and some important parameters can be flexibly varied.Using this plant,two refined oils were investigated under various operation conditions.The effects of the solvent-adding position,the butanone/toluene ratio,and the ratio of solvent over oil on the experimental results were explored.The pouring point and the recovery of the dewaxing oil were analyzed,and the paraffin crystals were detected by the scanning electron microscopy (SEM).The running of the experiments showed that the plant can be operated steadily,the experimental results indicated mainly the plate paraffin crystals formed,high ratio of solvent/oil and large amount of butanone in the mixed solvent were benefit to the paraffin crystallization for the studied oils and the dewaxed oil yields had a reasonable trend.