Patent · US Active

System and method for purifying mother liquid steam of polytetrafluoroethylene dispersion liquid

US9776123B2 · kind B2 · utility

0Cited by

1References

16Claims

0Family size

Assignee

Zhonghao Chenguang Research Institute of Chemiccal Industry Company Limited · CN

Inventors

Jingang Zhang · Beijing, CN
Jia LI · Beijing, CN
Jinsong Zhang · Lo Wu, CN
Yong-Chun Xu · Hong Kong, CN
Xiulin Chen · Sichuan, CN

Key dates

Filing date	Aug 2, 2012
Grant date	Oct 3, 2017
Priority date	—
Expiry date	Nov 7, 2033

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2257/2066
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A system for purifying mother liquid steam of polytetrafluoroethylene dispersion liquid comprises a concentration kettle (1), a defoaming pot (2), a gas-liquid separator (3) and a falling film absorption tower (4). A steam exit of the concentration kettle (1) is connected to an entrance of the defoaming pot (2). An exit of the defoaming pot (2) is connected to a feeding port of the gas-liquid separator (3). A gas exit of the gas-liquid separator (3) is connected to the falling film absorption tower (4). A liquid exit of the gas-liquid separator (3) is connected to the concentration kettle (1). A method for purifying mother liquid steam of polytetrafluoroethylene dispersion liquid by using the system is further provided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.