SYSTEM AND METHOD FOR IMPROVING WATER QUALITY OF DEHYDRATING TOWER OF PURIFIED TEREPHTHALIC ACID APPARATUS

A system and method for improving the water quality of a dehydration tower in a purified terephthalic acid device. In order to improve the problems the present disclosure includes a dehydration washing device, a tail gas condensation device communicating with the top of the dehydration washing devic...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	ZHOU, Tao, MA, Kaixuan, XIE, Xiaoling, ZHAI, Xiangnan, GAO, Yan, ZHAO, Xu, LU, Yuanrui, ZHANG, Yipeng, TAN, Yongpeng
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS BLASTING CHEMISTRY COMPOSITIONS BASED THEREON HEAT EXCHANGE IN GENERAL HEATING LIGHTING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MECHANICAL ENGINEERING METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION STEAM OR VAPOUR CONDENSERS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A system and method for improving the water quality of a dehydration tower in a purified terephthalic acid device. In order to improve the problems the present disclosure includes a dehydration washing device, a tail gas condensation device communicating with the top of the dehydration washing device, and a water separation device communicating with the tail gas condensation device. The present disclosure has the following beneficial effects: 1) the energy consumption is reduced, and the economic benefit is remarkable; 2) the tail gas condensation device uses low-pressure vapor of about 0.05 MPa generated by an Nm-th-stage condenser as a heating medium; 3) a water separation tower is a tower-type multi-effect evaporation water separation tower, working media are water and the low-pressure vapor, and no organic phase is involved in a process, so that a reaction is stable and intrinsically safe; and 4) the water in the water separation tower is purified water and concentrated water, the purified water is returned to the top of the dehydration tower, and the concentrated water is mixed with a mother liquor and then enters the dehydration tower, thereby raising the efficiency of the dehydration tower and improving the water quality.