计算机与应用化学
計算機與應用化學
계산궤여응용화학
COMPUTERS AND APPLIED CHEMISTRY
2013年
3期
286-290
,共5页
旋转填料床%气相传质%RSM 模型%数值模拟
鏇轉填料床%氣相傳質%RSM 模型%數值模擬
선전전료상%기상전질%RSM 모형%수치모의
rotating packed bed%gas mass transfer%RSM model%numerical simulation
气相剪切旋转填料床是化工领域中一类新型高效的传质过程强化设备，适用于受气相阻力控制的吸收、精馏等过程。本文以计算流体力学方法（CFD）对该设备内气相流场进行了模拟研究，分析了气量为140 m3/h、转速为1200 rpm 时床内气相压力、速度和湍动能的分布情况，计算使用 RSM 湍流模型和 SIMPLEC 算法，填料部分用 Porous Media 模型。结果表明，GPS-RPB内压降主要来自旋转填料区；流场以旋流为主，切向速度远大于径向速度，沿径向的变化规律与实验值基本一致；扰流翅片可明显增强气相湍流，湍动能高于分层式填料旋转床。
氣相剪切鏇轉填料床是化工領域中一類新型高效的傳質過程彊化設備，適用于受氣相阻力控製的吸收、精餾等過程。本文以計算流體力學方法（CFD）對該設備內氣相流場進行瞭模擬研究，分析瞭氣量為140 m3/h、轉速為1200 rpm 時床內氣相壓力、速度和湍動能的分佈情況，計算使用 RSM 湍流模型和 SIMPLEC 算法，填料部分用 Porous Media 模型。結果錶明，GPS-RPB內壓降主要來自鏇轉填料區；流場以鏇流為主，切嚮速度遠大于徑嚮速度，沿徑嚮的變化規律與實驗值基本一緻；擾流翅片可明顯增彊氣相湍流，湍動能高于分層式填料鏇轉床。
기상전절선전전료상시화공영역중일류신형고효적전질과정강화설비，괄용우수기상조력공제적흡수、정류등과정。본문이계산류체역학방법（CFD）대해설비내기상류장진행료모의연구，분석료기량위140 m3/h、전속위1200 rpm 시상내기상압력、속도화단동능적분포정황，계산사용 RSM 단류모형화 SIMPLEC 산법，전료부분용 Porous Media 모형。결과표명，GPS-RPB내압강주요래자선전전료구；류장이선류위주，절향속도원대우경향속도，연경향적변화규률여실험치기본일치；우류시편가명현증강기상단류，단동능고우분층식전료선전상。
Gas phase sheared rotating packed bed(GPS-RPB) is a new efficient apparatus for mass transfer processes intensification in chemical industry and has been used in absorption, distillation processes which restricted by gas side mass transfer resistance. Computational fluid dynamics(CFD) method was employed to simulate the gas phase flow in the GPS-RPB, the distribution characteristics of pressure, velocity and turbulent kinetic energy in the GPS-RPB was systematically investigated with the gas flow rate of 140 m3/h and rotating speed of 1200 rpm. The RSM turbulent model and SIMPLEC algorithm methods was used in the calculation, packing was modeled by Porous Media model. Results indicate that pressure drop mainly comes from the packing, rotating field appears to play a major role in GPS-RPB, the tangential velocity of the gas phase far outweigh the radial velocity, which agree well with the experiment data; fin spoilers can obviously promote turbulence, turbulent kinetic energy is higher than the rotating packed bed with split packing(SP-RPB).
