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Experimental Study On Vertical Load Performance Of Structured Packing

Posted on:2012-05-10Degree:MasterType:Thesis
Country:ChinaCandidate:X F LiFull Text:PDF
GTID:2131330332993937Subject:Chemical Engineering
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This major study on the vertical load hydrodynamics and mass transfer performance of structured packing. First 250Y metal plates of corrugated plate packing on Northwestern University Institute of chemical new multifunctional tower for the thermal simulation device. Determination of flat packing material by air-water systems including filler and wall pressure drop of flow hydrodynamics, liquid volume. And then to air-water-CO2 for the determination of its liquid phase of the total height of mass transfer unit, will more determination and documentation of the results of the test results compared to smaller differences. The one hand,the description multifunctional tower rationality of experimental equipment for hot die in process design, but also a very good test equipment operation of the instrument display is normal; The other hand, can also indicate in our entire experiment, experimental methods, experimental procedure specifications, scientific. Second, then in vertical loading material installed in packed Tower, under the same conditions for the determination of its, Wall flow pressure drop and liquid holdup and liquid-phase the total height of mass transfer unit, Experimental results show that Pressure drop in vertical loading per meter of dry filler relative clippings from the packing material dry packing per metre voltage drop reduces an average of about 18.7%; In the spray density respectively,20,30,40,50m3/(M2.h), vertical loading Bipin packing material packed per metre voltage drop reduces respectively about, 10.85%,10.92%,9.77%,11.33%; Wall traffic respectively reduced about,10.72%,11.63%, 8.28%,12.13%; Liquid holdup respectively increased an average of about,11.82%, 9.58%,15.62%,15.13%; Total height of mass transfer unit reduces the liquid phase about, 16.29%,16.79%,17.36%,19.30%. Experiment results show that the above vertical hydrodynamic and mass transfer performance of packing materials are better than ordinary packing material.The article further by establishing a physical model and theoretical analysis of mathematical formula to establish a vertical mounted Wall flow calculation model of structured packing, The article further by establishing a physical model and theoretical analysis of mathematical formula to establish a vertical mounted Wall flow calculation model of structured packing. Also the vertical load structured packing Tower, radial cross section extending from the central to the Tower wall at the end of the three regions of gap area, such as distribution of liquids,Turns out Center area of maximum flow, annulus area second, near the Tower Wall flow minimum, Shows vertical loading structured packing in the area of elimination of Wall flow effect results are obvious.This article similar to the structure column-shaped bundles of catalytic determination of packing the pressure drop and experimental phenomenon and analysis results. While experimental results and Luoyang petrochemical engineering equipments tower to the packing group of the Institute of fluid mechanics performance test report compared to verify that the experimental data are reliable and accurate.Vertical loading structured packing is a whole plate of flat packing material into several small cylinders, each a small cylinder is a packing unit. Filling unit composed of parallel filling on the same section paragraph, several natural segments packed segment as a whole. A paragraph of segmentation on intersections next paragraph packing unit of the Centre, this allows the liquid reallocated block flow of liquid formation of radial flow to a tower wall. And bundles in the catalysts for catalytic packing is to fill in fiber bag, then-fiber bags sewn into off-season tubular sandwiched in between two layers of stainless steel wire mesh bag, Then-fiber bags sewn into off-season tubular sandwiched in between two layers of stainless steel wire mesh bag, and then into a cylinder-shaped tiered installed in packed towers. Deficiencies are among the various bundles contact and gap near the wall of the tower is too large, uneven distribution of gas and liquid. Therefore, the research group of the concept of vertical loading advantage of geometric structure and good hydrodynamics and mass transfer performance in loading catalyst and catalytic packing merits of coupled together, Overcome bundles catalytic stuffing shape structure and installation of insufficient research and development of new type high performance load structured catalyst packing, Hope to pass above the experimental process, to provide new high-efficiency vertical loading structured catalyst packing basic experimental data, Because of the limited time and experimental conditions, this article only the study of catalytic packing pressure drop, then you can continue to do further experiments to its performance and optimization, to develop the industrial application of new type high performance load structured catalyst packing provide the basis of preliminary data.
Keywords/Search Tags:Vertical filling material, Pressure drop, Wall flow, Liquid holdup, Total liquid height of mass transfer unit, Catalytic packing, Hydrodynamic performance, Mass transfer performance
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