Washing device and process of PET (polyethylene terephthalate) liquid-phase tackifying kettle

• Main Authors: ZHANG DEHUI, SHI JIAOXUE, WEI JIANQING, LIU XIONG, CHEN WENXING
• Format: Patent
• Language: Chinese; English
• Published: 03.09.2014
• Subjects: CLEANING; CLEANING IN GENERAL; PERFORMING OPERATIONS; PREVENTION OF FOULING IN GENERAL; TRANSPORTING

The invention relates to a washing device of a PET (polyethylene terephthalate) liquid-phase tackifying kettle and a washing process using the washing device for washing the tackifying kettle, and belongs to the technical field of polyester fiber production. The washing device comprises a segmented heater, a solvent injection pipe, a circulation pipe, a buffer tank, a condenser and a liquid seal tank, wherein the segmented heater is arranged in an outer wall jacket of the tackifying kettle; the solvent injection pipe is arranged at the top of the tackifying kettle; one end of the buffer tank is connected with the tackifying kettle through the circulation pipe, and the other end of the buffer tank is connected to the top of the condenser through a steam pipe; a circulative pipe is arranged at the bottom of the condenser and divided into two branch pipes, one branch pipe is connected to the bottom of the buffer tank, and the other branch pipe is connected to the bottom of the liquid seal tank; and the upper par