The process of recovery of sodium naphtenates into naphtenic acids and sodium alkali using electrodialysis with bipolar membranes is investigated. A membrane stack of an electrodialyzer with a three-chamber unit cell in which the salt chamber is formed by two cation-exchange membranes is proposed, which eliminates the transfer of anions from the salt chamber to an adjacent alkaline and acidic one. The values of current efficiency for naphtenic acid and alkali, as well as energy consumption for the process, are determined. It is shown that the main problems with the development of electro-membrane technology for producing naphtenic acids from petroleum and petroleum products are associated with micelle formation of a mixture of naphtenic acids with sodium naphtenate in the pH = 6.5–8 range, which leads to a sharp increase in the viscosity and electrical resistance of solutions. Introduction of the cation-exchanger and sodium sulfate to the intermembrane space of naphtenthe salt chamber can significantly improve the technical and economic characteristics of the process - for example, the specific energy consumption decrease from 0.86 kW h·L⁻¹ down 0.38 kW h·L⁻¹, which is more than two times lower than the original three-chamber cell. At the same time, the production of naphtenic acids remains on the same level which is 17 L·m⁻²·h⁻¹.

研究了用双极膜电渗析法将环烷酸钠回收为环烷酸和钠碱的过程。提出了一种具有三腔单元电池的电渗析器的膜堆，其中盐腔由两个阳离子交换膜形成，从而消除了阴离子从盐腔向相邻的碱性和酸性迁移的过程。确定萘酸和碱的电流效率值以及该过程的能耗。研究表明，用电膜技术从石油和石油产品生产萘酸的主要问题与在pH = 6.5–8范围内的萘酸和萘酸钠的混合物的胶束形成有关，这导致溶液的粘度和电阻急剧增加。将阳离子交换剂和硫酸钠引入环烷烃盐腔的膜间空间可以显着改善该工艺的技术和经济特性-例如，单位能耗从0.86 kW h·L降低^-1降低0.38 kW h·L ^-1，这比原始的三腔室电池低两倍以上。同时，萘酸的产生保持在相同的水平，即17 L·m ^-2 ·h ^-1。