阅读说明：本技术 提纯链烷磺酸酐的方法和使用纯化的链烷磺酸酐生产链烷磺酸的方法 (Method for purifying alkanesulfonic anhydride and method for producing alkanesulfonic acid using purified alkanesulfonic anhydride ) 是由 J·沃特曼 J·施皮尔曼 K·费得塞勒 F·鲁塞尔 于 2018-04-18 设计创作，主要内容包括：本发明涉及一种提纯链烷磺酸酐的方法,其包括下列步骤：(a)将包含链烷磺酸酐、硫酸、高沸物和残留低沸物的料流供入熔融结晶(25)以形成悬浮在母液中的链烷磺酸酐的晶体,(b)进行固-液分离以从所述母液中移除晶体,(c)任选地,洗涤所述晶体以除去附着在晶体上的母液。本发明还涉及使用纯化的链烷磺酸酐生产链烷磺酸的方法。(The invention relates to a method for purifying alkanesulfonic anhydrides, comprising the following steps: (a) feeding a stream comprising alkanesulfonic anhydride, sulfuric acid, high boilers and residual low boilers to melt crystallization (25) to form crystals of alkanesulfonic anhydride suspended in a mother liquor, (b) performing solid-liquid separation to remove crystals from the mother liquor, (c) optionally washing the crystals to remove mother liquor adhering to the crystals. The invention also relates to a process for the production of alkanesulfonic acids using the purified alkanesulfonic anhydrides.)