Process and device for recovering organic solvent in SBC production

• Main Authors: QING TIAN, DING HONGQUAN, YANG ZHANZHAO, WANG ZHANYI
• Format: Patent
• Language: Chinese; English
• Published: 23.04.2024
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention discloses a process and a device for recovering an organic solvent in SBC production tail gas, which comprises the following steps of: removing colloid from high-concentration glue-containing exhaust gas such as a polymerization kettle by adopting two-stage gas-liquid separation, then compressing and condensing to lower concentration, and then entering an organic gas membrane separation device to recover most organic matters in the exhaust gas. And after the residual low-concentration retentate gas is mixed with low-concentration exhaust gas from a condensation kettle and the like, the organic matters in the low-concentration retentate gas are efficiently removed and recovered again through a resin adsorption and recovery device, and the tail gas is stably discharged in a standard reaching manner. And the recovery rate of the organic solvent can reach more than 99% through a three-stage coupling process of compression condensation, membrane separation and resin adsorption. The process combinatio