OPP Production Process And Description

Process of producing o-phenylphenol from cyclohexanone

The cyclohexanone condensation adopts the continuous technology of multiple kettles in series. cyclohexanone and catalyst are continuously added to the first reactor for reaction, and then enter the second and third reactors in turn. The generated water is carried out by the water carrying agent and separated into phases. The water carrying agent returns to each reactor. The water generated from the reaction is collected and then enters the water washing device for continuous water washing. The separated catalyst is recycled into the first reactor, and the reaction products after washing continuously enter the continuous distillation unit. The unreacted cyclohexanone is distilled out and recycled into the first reactor for reaction. After metering, the refined dimer enters the dehydrogenation reactor for reaction. After the light components are removed from the crude OPP generated by distillation, more than 99% of the OPP is continuously sliced and packaged after adding stabilizer in the mixing kettle. The other part needs to be recrystallized, centrifuged and dried to obtain more than 99.5% of the OPP product.