(502a) An Integrated Device for Intensifying Oil Deacidification Based on Microdroplets

The dilute acidic chemicals will seriously affect the oil quality and its reaction performance. Alkali washing, as one of the most widely applied deacidification methods, faces two critical problems: too much alkali consumption and low separation efficiency. Balancing efficient microdispersion at the high phase ratio and rapid phase separation remains a great challenge. This work integrates the micro-capillary jetting dispersion technology, which can realize efficient generation of microdroplets without the restriction of phase ratio, with a short millimeter column and develops a short-contact oil deacidification technology. We have achieved more than 99% deacidification efficiency, and the total volume mass transfer coefficient is up to 4.68 s^-1 at a phase ratio of 300 over a wide range of acid concentrations (200~5000 ppm). Besides, we have verified that it is applicable in various acid removal processes. Integrating efficient microdispersion, stable two-phase flow, and rapid phase separation in a single short-contact device, it shows great potential in intensifying deacidification on a large scale.