Results 241 to 250 of about 251,847 (293)
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Advanced Powder Technology, 1994
Being able to predict solid distribution in a mixing tank, as a function of operating conditions, is of upmost importance to several processes, having acted as the motivation for this work. It is widely accepted that operating above the critical impeller speed is usually unfavorable, since the increase of transfer rate will be slight when compared with
M.G. Rasteiro +2 more
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Being able to predict solid distribution in a mixing tank, as a function of operating conditions, is of upmost importance to several processes, having acted as the motivation for this work. It is widely accepted that operating above the critical impeller speed is usually unfavorable, since the increase of transfer rate will be slight when compared with
M.G. Rasteiro +2 more
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Mixing Process in a Stirred Tank
KAGAKU KOGAKU RONBUNSHU, 1978乱流域を対象に電極法によるインパルス応答を行って, パドル型翼攪拌槽内の混合過程の検討を試みた.応答波形における循環の周期ならびに峰あるいは谷部の形成時間を測定して, 翼条件と循環時問との相関性ならびに測定位置による応答の遅れについて明らかにした.また, 循環流パターンについての実験的な知見から, 完全混合槽列から成る循環経路による混合モデルを作製し, 実測応答特性との対応を行った.この結果, 二つの混合パラメータについての考察が得られ, これらのパラメータを用いるとモデルと実測応答との対応は比較的良好に得られた.また, 混合および循環速度の相互関係は攪拌所要動力数を用いて相関できた.
Toshisuke Sasakura +3 more
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Mixing Problems with Many Tanks
The American Mathematical Monthly, 2013AbstractWe revisit the classical calculus problem of describing the flow of brine in a system of tanks connected by pipes. For various configurations involving an arbitrary number of tanks, we show that the corresponding linear system of differential equations can be solved analytically.
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Mixing in Tanks Agitated by Jets
Chemical Engineering Research and Design, 2003Experiments have been carried out to study the effects of various parameters such as nozzle diameter, angle of inclination and jet velocity, on mixing time. The dependence of mixing time on the nozzle angle has been explained based on the flow patterns and concentration profiles.
A.W. Patwardhan, S.G. Gaikwad
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Measurement of droplet coalescence in a mixing tank
AIChE Journal, 2023AbstractIt is in urgent requirement to directly measure the droplet coalescence frequency for the application of the population balance model. In this study, a method was firstly developed to directly measure the droplet coalescence frequency in turbulent flow field by using a specially designed mixing tank and a high‐speed camera.
Yubin Cai +5 more
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REACTIVE MIXING IN AGITATED TANKS
Chemical Engineering Communications, 1991Chemical Engineers generally model reactive mixing problems using the concepts of macro- and micro-mixing. Various simplified models have been published using these concepts and they are briefly reviewed in this paper to identify their ranges of applicability. A new model is then proposed to compensate for some inadequacies of the previous ones.
RANADE, V.V., BOURNE, J.R.
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Solids suspension in mixing tanks
Industrial & Engineering Chemistry Fundamentals, 1982The dynamic characteristics of solids flow in slurry reactors with an axial flow agitator, a marine propeller or a vibrating disk, have been investigated both theoretically and experimentally. The dynamic and steady state solids concentration profiles are well described by means of the axial sedimentation-dispersion model. The correlation equations for
Kakuji Tojo, Kei Miyanami
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A mixing study in a double-Rushton stirred tank
Computers & Chemical Engineering, 2009Computational and experimental methods have been used to investigate the flow field, power and mixing time in a fully baffled stirred vessel with two six-blade Rushton turbines. Flow in a stirred tank involves interactions between flow around rotating impeller blades and stationary baffles.
R. Zadghaffari +2 more
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Mixed-Flow Impeller Characteristics in Baffled Mixing Tank
Advanced Materials Research, 2012In recent times, impellers have been designed and modified to combine unique hydrodynamic features to overcome redundancy during mixing. One of such impeller is the mixed-flow impeller which displays a unique combination of radial and axial flow. In this paper, the flow characteristic of a mixed-flow impeller is reported.
Nabeel Adeyemi +3 more
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Modeling Flow and Mixing in Sedimentation Tanks
Journal of Hydraulic Engineering, 1990Numerical results from a computer model for the prediction of the neutrally buoyant flow within sewage treatment plant settling basins are compared with results of several new experiments. The flow field calculations performed using the k‐e turbulence model agree well with experiments for simple geometries.
Eric W. Adams, Wolfgang Rodi
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