Apparatus for reducing arene extraction solvent sulfolane, and application thereof

• Main Authors: SUN XUJIANG, GUO LINGTONG, LI BAOJUN, LI JUN, LI MINGYU, FENG ZHIQIANG, LIU JIANZHONG
• Format: Patent
• Language: Chinese; English
• Published: 17.10.2012
• Subjects: CHEMISTRY; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY

The invention relates to an apparatus used for reducing an arene extraction solvent sulfolane, and an application thereof. The apparatus has a structure that: an arene extraction apparatus lean solvent outlet port is connected to a flow meter (1); the flow meter (1) is connected to a solvent heat exchanger (2); the solvent heat exchanger (2) is connected to a solvent cooling device (3); the solvent cooling device (3) is connected to a filter (4); the filter (4) is connected to a resin exchange tower (5); the resin exchange tower (5) is connected to another channel of the solvent heat exchanger (2); the other channel of the solvent heat exchanger (2) is connected to the other port of the arene extraction apparatus; and alkalescence anion-exchange resin is installed in the resin exchange tower. Under the conditions that the space velocity is 1.5-9.0h<->, and the temperature is 40-60 DEG C, after the processing of the apparatus, the pH value of a sulfolane solvent is increased to above 6.0, the chromaticity is r