The Prospect Of Organic Recovery Technology In Polyester Esterification Wastewater Is Bright.

Recently, the China Federation of textile industry was organized in Shanghai by Shanghai poly friend Chemical Co., Ltd. and China. Spin The scientific and technological guidance project of the China Federation of textile industry jointly sponsored by the scientific research institute is the scientific and technological achievements appraisal meeting of "organic recovery technology in polyester esterification wastewater". The appraisal committee believes that this technology has reached the international advanced level as a whole.

Polyester is the most important raw material for textile industry and engineering plastics industry. By 2012, China's polyester production capacity reached 38 million tons, accounting for nearly 55% of the world's total capacity, and more than 7 million 100 thousand tons of esterified wastewater were discharged. Polyester fiber More than 10% of the industry's sewage. It is understood that this technology is aimed at polyester The esterified wastewater discharged by enterprises was analyzed. The composition and content of esterified wastewater produced by different polyester processes were analyzed. The mechanism of decomposition and formation of 2- methyl -1, 3- two oxygen ring (2-MD) was studied. Reactive distillation and multi effect distillation technology of organic matter recovery in polyester wastewater were developed. The process of recovering organic compounds from polyester esterification wastewater was developed. Through process control and optimization, the high purity and high efficiency acetaldehyde and glycol recycling were achieved, and the discharge amount and COD value of wastewater were greatly reduced.

This technology has built three sets of industrial equipment for the recovery of organic compounds from esterification waste water in Jiangsu's three Lane Lane Group, Tong Kun group Zhejiang Hengsheng chemical fiber company, and Shanghai Petrochemical polyester department, with advanced technology and equipment, reliable technology, stable production and safe operation.

Practice has proved that this technology device has low investment and operation cost, short recovery period and significant economic benefits. It has significant social benefits for cleaner production and waste recycling and recycling in polyester industry, and has broad application prospects. The appraisal committee recommends further popularization and application.