DEGASSING OF LIQUID WITH MEMBRANE CONTACTOR

摘要

PROBLEM TO BE SOLVED: To provide a method for degassing a liquid with a membrane contactor.SOLUTION: A liquid containing a dissolved gas is introduced into a contactor 12 connected to a vacuum source. The contactor 12 comprises: a perforated core 32; a plurality of hollow fiber membranes 38; a tube sheet 40 to fix each end of fibers; and a shell 42 having a liquid outlet. The shell encloses the fibers, the tube sheet and the core. Hollow fiber lumens are in fluid communication with the vacuum source. The liquid enters the contactor via an open end 34 of the core, radially exits the core, crosses over the membranes within the shell and exits the contactor by the liquid outlet 44. Thereby, the dissolved gas diffuses from the liquid through the membrane into the lumen. The liquid flowing out has a dissolved gas content of less than 1 ppb.