Method and device for recovering liquid crystal of waste panels

• Main Authors: HUNG, HUAN YI, CHENG, KUNG LUNG, CHERN, JER YOUNG, LU, CHENG CHUAN, LIAO, WAN JIUN, TAI, HSIEN HUI, LU, CHIEN WEI, TSAI, CHENG KUO
• Format: Patent
• Language: Chinese; English
• Published: 01.11.2012
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DISPOSAL OF SOLID WASTE; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PHYSICS; RECLAMATION OF CONTAMINED SOIL SOIL; SEPARATION; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING

The disclosed is a method for recovering the liquid crystal of waste panels, including: (i) cracking waste panels, dipping the cracked waste panels in solvent to dissolve the liquid crystal and the seal material of the waste panels for forming an extract liquid; (ii) cooling the extract liquid to lower the seal material solubility, thereby easily removing the seal material from the extract liquid by filtering and adsorbing; (iii) heating the extract liquid to form solvent vapor, and condensing the solvent vapor to form recycled solvent; (iv) dipping the cracked waste panels in the recycled solvent to form the extract liquid; and (v) repeating steps (ii) to (iv) until all of the liquid crystal dissolved in the extract liquid, and then removing the solvent from the extract liquid to obtain a recycled liquid crystal. The invention also provides a recovery device to process the above method, and the recovered liquid crystal has low residue solvent, low impurity content ratio, and recovery efficiency greater than