Epoxy resin refining process for reducing toluene wastewater and byproduct industrial salt

• Main Authors: ZHANG LIANG, QU PENG, LIU YIWU, XIONG GAOHU, LI CHENHONG
• Format: Patent
• Language: Chinese; English
• Published: 28.05.2024
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention belongs to the technical field of treatment process and equipment of epoxy resin, and particularly relates to an epoxy resin refining process for reducing toluene wastewater and byproduct industrial salt. The invention relates to an epoxy resin refining process for reducing toluene wastewater and byproduct industrial salt. The epoxy resin refining process comprises the following steps: primary solid-liquid separation: pumping a reaction kettle material of crude epoxy resin into a separation kettle for separation; pumping the crude toluene resin in the crude toluene resin storage tank into a refining kettle, and recovering the separated toluene into the toluene storage tank for reutilization; starting a centrifugal machine II, opening a valve at the bottom of the refining kettle for secondary solid-liquid separation, pumping solid components in the crude solid storage tank into an extraction kettle, and adding methylbenzene for extraction; performing solid-liquid separation for the third time; an