Melt spinning head for multi-composition hollow fiber composite membrane

Abstract

The invention relates to a melt spinning head for a multi-composition hollow fiber composite membrane, which comprises a temperature measurement sensor, a bottom plate, a pressure plate, a cover plate, two gaskets and a heating sleeve, wherein the bottom plate is provided with a joint 1 for receiving fused high polymers, namely a first composition from a first spinning machine; simultaneously the bottom plate is matched with the pressure plate to form a spinning opening 1 which is communicated with the joint 1; the first composition, namely the fused high polymers, is sprayed out from the spinning opening 1 to form an inner layer of the hollow fiber composite membrane; the pressure plate is provided with a joint 2 for receiving fused high polymers, namely a second composition, from a second spinning machine; the pressure plate is matched with the cover plate to form a spinning opening 2 which is communicated with the joint 2; the second composition, namely the fused high polymers, is sprayed out from the spinning opening 2 to from a second layer of the hollow fiber composite membrane; by analogy, the spinning head can form a multi-composition spinning head in a mode of adding more pressure plates; and the whole spinning head is connected by bolts through connecting holes. The spinning head can realize the one-step forming of the hollow fiber composite membrane by multi-composition high polymers, and (two or various) high polymers with different melting points are subjected to membrane wire spinning. Simultaneously, a pedestal and the pressure plate and the pressure plate and the cover plate are matched with each other in virtue of sub-openings to guarantee the concentricity, so that the concentricity of a core bar of the cover plate, the spinning opening 1 and the spinning opening 2 is guaranteed; and the wall thickness of the formed hollow fiber composite membrane is uniform.

Description

technical field [0001] The present invention relates to a multi-component hollow fiber composite membrane melt-spinning spinneret according to claim 1. The multi-component melt-spun hollow fiber composite membrane obtained by the invention is suitable for gas and liquid separation. The international patent main classification number is proposed to be Int.Cl.D01D4 / 00. Background technique [0002] In recent years, membrane separation technology has achieved remarkable development as a new type of high-efficiency fluid separation unit operation, and has been widely used in CO 2 Gas separation fields such as separation recovery and comprehensive utilization, and liquid separation fields such as water treatment, chemical industry, medicine, food, and beverage. Compared with conventional coiled membranes, tubular membranes, and flat membranes, hollow fiber membranes are characterized by high packing density per unit volume, no need for supports, large specific surface area, com...

AI Technical Summary

Problems solved by technology

[0004] With the development of society and the continuous expansion of the application field of membrane technology, the performance requirements for membranes are also constantly improving, but the existing membrane materials can no longer meet the requirements of use.

There is no report on the spinneret used in the preparation of multi-component fused hollow fiber composite membranes

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