Method for preparing bis (trifluoromethanesulfonyl) imide sodium and stirring device

• Main Authors: HU SHUAISHUAI, ZHANG LULU, ZHANG ZHIPENG, LI HONGLIN, LUO JIANZHI, ZHANG RUIQIANG, HE CHENG, LEE BYUNG-WON
• Format: Patent
• Language: Chinese; English
• Published: 20.02.2024
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention relates to a method for preparing bis (trifluoromethylsulfonyl) imide sodium and a stirring device, and the method comprises the following steps: S1, reacting trifluoromethylsulfonyl fluoride, NH3 and NaF in an organic solvent through a specially-made combined stirring device, and directly filtering after the reaction is finished; s2, the filtrate is simply distilled under the stirring condition, the organic solvent is removed, and bis (trifluoromethanesulfonyl) imide sodium is obtained. The radial flow of the combined impeller arranged on the stirring device, the downward axial flow of the center of the container and the organized flow of feed liquid in the whole container ensure the uniformity of materials in the reaction container and improve the reaction yield. The method is simple in process, short in reaction time and high in preparation efficiency, and the preparation process cost is remarkably reduced; and the preparation method has the advantages of less by-products, simple separation p