Refining system for aromatic solvent oil

摘要

An aromatic solvent oil refining system, characterized in that the system comprises a pulp storage tank for aromatic solvent oil, a crystallizer and a finished product storage tank connected in series with the aromatic solvent oil storage tank and the crystallizer being connected by a conduit, and wherein the system further comprises a precooling device comprising a top-down precooling container and cooling circuit water with which the precooling container is filled, and wherein the conduit is partially in the precooling device, and wherein the part of the conduit located in the precooling device has a serpentine meandering shape Distribution has; and wherein the crystallization apparatus comprises a crystallization vessel, a cooling source disposed at the top of the crystallization vessel, a filter screen disposed at the bottom of the crystallization vessel, and a thermometer disposed on the crystallization vessel for detecting the internal temperature, and both ends of the filter screen each having an inside wall of two and wherein the finished product storage tank is connected to the bottom of the crystallization vessel, and wherein a respective naphthalene crystal discharge port is provided on two opposite side walls of the crystallization vessel, and wherein the naphthalene crystal discharge port is located above a junction between the filter screen and the crystallization vessel.