Search International and National Patent Collections

1. (WO2011150210) HOLLOW FIBER MEMBRANE MODULE

Pub. No.:    WO/2011/150210    International Application No.:    PCT/US2011/038139
Publication Date: Dec 1, 2011 International Filing Date: May 26, 2011
IPC: B01D 63/04
B01D 65/02
B01D 65/08
Applicants: HYDRANAUTICS
MITSUBISHI RAYON AMERICA INC.
SASAKAWA, Manabu
Inventors: SASAKAWA, Manabu
Title: HOLLOW FIBER MEMBRANE MODULE
Abstract:
The present invention provides a hollow fiber membrane module that can minimize the decrease of the membrane filling rate caused by arrangement of diffuser pipes, and sufficiently carry out air bubbling. The hollow fiber membrane module includes a hollow fiber membrane bundle made up with a plurality of hollow fiber membranes, an upper potting section and a lower potting section in which ends of the hollow fiber membrane bundle are put together by the use of a resin in such a way that the hollow fiber membranes maintain opening at ends, and a diffuser pipe arranged on an upper surface of the lower potting section. A cross-sectional shape of the diffuser pipe is a longer shape in a vertical direction than in a horizontal direction. A cross-sectional area of the diffuser pipe continuously and step-by-step becomes narrow toward a terminal end from an air inlet side that supplies air to the diffuser pipe.