Shaping core liquid system of hollow fibrous membrane central hole
A fiber membrane and central hole technology, applied in the field of membrane separation, can solve the problems affecting the pressure resistance and membrane performance of the membrane, the uneven diameter of the inner hole of the membrane, and the uneven fluid delivery flow, and achieve the effect of eliminating flow fluctuations.
Inactive Publication Date: 2015-01-21
TIANBANG NAT ENG RES CENT OF MEMBRANE TECH
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Problems solved by technology
The main disadvantage is that the fluid delivery flow is not stable, and the inner hole diameter of the spun membrane is uneven, which seriously affects the pressure resistance and membrane performance of the membrane.
Method used
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Embodiment 1
[0011] Hollow fiber membrane center hole forming core fluid system, including raw material tank 1, defoaming tank 2, gear metering pump 3, cooling device 4, pressure stabilizing tank 5 and spinning output device 6, the raw material tank 1, defoaming tank 2 , the gear metering pump 3, the cooling device 4, the surge tank 5 and the spinneret output device 6 are sequentially connected through pipelines, and the spinneret output device 6 is a nozzle or a spinneret plate.
[0012] Fill the raw material tank with pure water or the water-solvent mixture required by the formula, and add nitrogen to the raw material tank at a pressure of 0.2 bar as the driving force to make the raw material liquid enter the defoaming tank for degassing. After defoaming, start the gear metering pump, according to It is required to adjust the flow rate of the inner hole formed by the required spinning, the solution is pumped to the cooling device and then to the pressure-stabilizing tank, the solution aft...
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The invention discloses a shaping core liquid system of a hollow fibrous membrane central hole. The system comprises a raw material tank (1), a defoaming tank (2), a gear wheel metering pump (3), a cooling device (4), a surge tank (5) and a spinneret output device (6), wherein the raw material tank (1), the defoaming tank (2), the gear wheel metering pump (3), the cooling device (4), the surge tank (5) and the spinneret output device (6) are sequentially communicated through pipelines. By the system, the flow fluctuation of the fibrous membrane central hole manufactured by a constant-flux pump can be eliminated. Through the actual use on production lines of a multi-spinneret ultrafiltration membrane filature, the patent design requirements can be completely satisfied; the spinning speed can be up to 25 meters per minutes from 5 meters per minute; the central holes of the filament are uniform; the requirements of the multi-spinneret on the core liquid with large flow can be satisfied; the original constant-flux pump as the forming equipment of the central hole of the filament cannot satisfy the requirements; and the system can completely replace the constant-flux pump.
Description
technical field [0001] The invention relates to the technical field of membrane separation, in particular to a hollow fiber membrane center hole forming core liquid system. Background technique [0002] The production of the center hole of the existing hollow fiber membrane spinning technology is mostly completed by pumping water with advection pump or a mixed solution of water and solvent in a certain proportion. The working principle of the advection pump is that two cylinders reciprocate to transport fluid. The main disadvantage is that the fluid delivery flow is not stable, and the inner hole diameter of the spun membrane is not uniform, which seriously affects the pressure resistance and membrane performance of the membrane. Contents of the invention [0003] The present invention is aimed at the processing technology of hollow fiber membranes (including hollow fiber membranes such as air film and water film). Based on the gear metering pump that can draw water, a s...
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IPC IPC(8): D01D1/06
Inventor 王秀义尹中升俞锋
Owner TIANBANG NAT ENG RES CENT OF MEMBRANE TECH