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Supported TiO2 porous filter plate with the preparation and properties of membrane


I Figure 4 shows the students to 0.40 / ~ m pore size membrane filter TiO Head Head-run system of Hui bad time (min) Figure 3TiO acid test results of the membrane time frain) Figure 4TiO: film over vent Regeneration Results \regeneration of the filter test this material, to a certain extent, reflect the membrane anti-blocking ability and regeneration. Experiments in the operating pressure is 0.2MPa, the material was 0.6% (mass) of the siO: suspension, the main flow rate of 0.35m / s, filter area of 26.42cm of conditions. the material before filtration experiments took 90rain measured test data,[link widoczny dla zalogowanych], can be seen from Figure 4, after the rate of decay 20min tests have been stabilized, indicating Since the narrow pore size distribution, the smaller the pore blockage later. membrane resistance change is almost no longer feel free to ask. relatively long-term use of the test the first 90min of the values have been stable value can be considered. When the filter after 90min. stop the feed, with the strike ionized water cleaning filters 10rain, plus siO. suspensions, re-filter test, that is obtained in Figure 4 Regeneration of curves. Comparison of the two curves in the figure the first 90rain filtration rate values (05 and 41,[link widoczny dla zalogowanych], respectively scorpionfish .17 L / m �� h), shows that the rate by the washing of regeneration after 95% recovery rate of more than initially confirmed by the regeneration of ceramic membranes prepared with good performance. 4 Conclusion. (1) sol-gel method can be made too porous surface loading of intact TiO: ceramic membrane, membrane pore size decreases with the increase in the number coating, membrane pore size distribution narrow. (2) that by filtering performance measurement, pore size 0,65 / ~ m and 0 .40 btm of the ceramic membrane has a 925L / (mh �� MPa) and 564L / (m �� h �� MPa) of pure water flux. (3) TiO: film has an excellent acid, alkali can. (4) TiO. Film higher initial recovery rate of regeneration, regeneration performance is good. References 1KlemLC, GallagherD-JMemb.sci, 1988I39 (3): 213 ~ 2202ItayaK, JChem, EngJpn �� 1984I17 (5)} 5l4 ~ 5253LeenaarsAFM, KeizerM, BurggraffAJtChemtech, 1986I16 (19)} 56O ~ 5644WojeiehKnjawski, PiotrAdamczak, AnllB.Narebska.Sepn.sciandTech.,[link widoczny dla zalogowanych], 1989} 74:495 Zhao Ai 300072 days Law Department of Chemical Engineering, Tianjin University City (on the next page 46) 4,2 principle of the test device and the test is Hall effect based on the principle of a Hall probe fixed in a sealed cover the outer surface of the probe's four sets of wall along the sealing wire leads connected with the digital tesla meter,[link widoczny dla zalogowanych], specific testing device shown in Figure 3, the use of this device can be completed of the gap magnetic flux density at the value of the test. 4.3 Test methods and data analysis tests in regular and irregular parking, turning to the use, test points and the magnetic block magnetic actuator is equal to the number, the location of the test for each of the center of the magnet, the magnetic flux density at the location of the maximum value, easy to test, according to the measured magnetic data to determine the status of the pump. (1) If the measured magnetic actuator along the circumference of the data presented by the small to big, from big to small trends, and the data size of 180 corresponds to the diagonal, you can determine the inner and outer magnetic rotor gap is uneven, place a large value, the gap distance is small, and vice versa. master bearing wear, but also can determine the bearing of the pump overhaul time. (2) If the measured value of the week corresponding to approximately the same points, but the specific value smaller than the original value,[link widoczny dla zalogowanych], indicating that magnetic actuator magnetic declined. if below a certain critical value, you can determine the magnetic drive pump device can not meet the requirements, you need to replace the magnetic clutch. 5 Conclusion magnetic drive pump condition monitoring is a need in depth research and the work must be done, it has a direct impact on the development of magnetic pump, although the method proposed above is practical, but also has its limitations and imperfections, which requires practical work in the future continue to explore and improvement. Lee and more people in Maoming City, Guangdong, Beijing, Guangzhou 525000, China Petrochemical College

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