Device for concentrating formic acid solution through pervaporation of molecular sieve membrane

• Main Authors: ZHANG DONGPING, YU JIANFU, GAO XUHONG, CUI JIAN, LI SENZHANG, XUE RUIDE
• Format: Patent
• Language: Chinese; English
• Published: 17.12.2021
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The utility model discloses a device for concentrating formic acid solution by pervaporation of a molecular sieve membrane, which comprises a feed pump, a preheater, a membrane component, a finished product heat exchanger, a finished product transition tank, a penetrating fluid condenser and a penetrating fluid transition tank. Water molecules in the steam penetrate through the inorganic ceramic membrane to reach the membrane permeation side and enter a penetrating fluid condenser and a penetrating fluid transition tank, formic acid stays on the membrane upstream side and enters a finished product heat exchanger and a finished product transition tank, and concentration is completed. Through the device, the recovery efficiency, concentration and purity of formic acid can be improved, the concentration of formic acid in wastewater is reduced, harmful substances can be treated under the condition that the device is not in contact with materials, and the safety of operators and the factory environment are protect