System for green and continuous preparation of high-purity thermoplastic phenolic resin

• Main Authors: ZHANG XIAOYAN, LIANG XIAN, WANG FENGWU, WEI YIJUN
• Format: Patent
• Language: English
• Published: 07.01.2015
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOSITIONS BASED THEREON; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR PREPARATION OR CHEMICAL WORKING-UP

The utility model discloses a system for green and continuous preparation of high-purity thermoplastic phenolic resin, and belongs to the technical field of a phenolic resin material. According to the system, a material inlet of a reaction kettle is used for feeding raw materials and a catalyst, and a half-finished product outlet is connected to an inlet of a granulator; a granule inlet of an extraction column is connected to an outlet of the granulator, an extracting agent inlet is connected to an outlet of a supercritical carbon dioxide mechanism and an outlet of an extracting agent tank, and an extracting mixture outlet is connected to an inlet of a separating column; an outlet of the separating column is connected to an inlet of a rectifying column; an extracting agent outlet of the rectifying column is connected to an inlet of the extracting agent tank, and a phenol outlet is connected to the material inlet of the reaction kettle; the supercritical carbon dioxide mechanism comprises a gas tank, a cold circulator and a compression pump which are connected sequentially, and are connected to an extracting agent inlet of the extraction column through the compression pump. The system disclosed by the utility model can effectively reduce free phenol in the phenolic resin, and the obtained phenolic resin has a high purity; and continuous production is realized.