The invention belongs to the technical field of
emulsified oil recovery, and particularly relates to a method for recovering
emulsified oil generated by preparing an
alumina carrier through an oil column forming process. The
emulsified oil recovery method comprises the following steps: adding
ammonia water into emulsified oil, stirring, preserving heat, centrifuging, collecting upper-layer floating oil A, and removing bottom-layer water and impurities to obtain a first-stage
emulsion; adding
ammonia water into the primary
emulsion, heating by using a heat source until the temperature is higher than 100 DEG C, then stopping heating to obtain a demulsified primary
emulsion system, carrying out centrifugal treatment, collecting upper-layer floating oil B, removing bottom-layer water and impurities, and remaining a secondary emulsion; combining the collected upper-layer floating oil A and the collected upper-layer floating oil B, distilling and removing water to obtain an
oil body A; carrying out
vacuum distillation on the secondary emulsion to remove water, and centrifuging to remove impurities at the bottom layer to obtain an
oil body B; and finally, combining the
oil body A and the oil body B to obtain recovered oil. The method does not need to add organic auxiliaries such as a
demulsifier, the
recovery process is simple and easy to control, the treatment temperature is low, the recovered
oil quality is good, and the recovery rate is high.