PROCESS FOR PRODUCING ADAMANTANE

摘要

A process for industrially advantageously producing adamantane.By the process, high-purity adamantane can be inexpensively produced at a high efficiency while effectively utilizing the trimethylenenorbornane contained in a "heavy raffinate heavy" (a fraction obtained by washing a raffinate with water for sulfolane removal and then further removing a specific light gas), which has conventionally had no uses except fuel and the like. The process can diminish the poisoning of a catalyst used in isomerization and the corrosion of devices used therefor. The process for adamantane production includes an isomerization step in which the trimethylenenorbornane contained in a raffinate obtained from a platfinate is isomerized, and is characterized by including a water-washing removal step in which the sulfolane contained in a trimethylenenorbornane concentrate to be fed to the isomerization step is removed by washing with water.