Patent ID: 7648633
Filing Date: 2010-01-19
Classification: B01D

Abstract:
1. A hollow fibre membrane module with a fixed structure comprising: a bearing shell, an inlet, a concentrated water outlet a produced water outlet, a central tube and hollow fibre membranes, in which the hollow fibre membranes, the central tube and the bearing shell are fixed together, the inlet is located at one end of the hollow fibre membranes, the concentrated water outlet is located at the other end of the hollow fibre membranes, the produced water outlet(s) is(are) located at one end or both ends of the central tube, and there are small holes drilled on the side wall of the central tube, wherein the module also comprises at least one separate fixed ring(s) located inside the module for fixing the hollow fibre membranes, with the separate fixed ring(s) fixed on the central tube and the hollow fibre membranes arranged in parallel through the separate fixed ring(s) wherein an outer ring is located at the outer edge of the separate fixed ring, an inner ring is located at the inner of the separate fixed ring, and many radial rib plates are located between the outer ring and the inner ring in equidistance; and the hollow fibre membranes are mounted in a cyclic space formed by the outer ring, the inner ring and the radial rib plates of the separate fixed ring in equal amount, and are parallel with the central tube.