流化

An experimental study of the influence of pressure on Umf and bed expansion height by the photographing with a camera was carried out in a fluidized bed of 60mm i.d.in the range of operating absolute pressure 0.1MPa~1.5MPa with two kinds of different size particles .

利用摄像技术在φ60mm×800mm压力为0.1MPa～1.5MPa的冷模加压流化床实验装置上，对两种不同粒径颗粒的最小流化速度和床层膨胀高度进行了研究。

Experimental results indicate that for the polystyrene particle with a larger size, Umf changes with p-0.3, and for the sand particle with a smaller size, Umf changes with p-0.21. An empirical equation about Umf is proposed based on the experimental data: Umf=μdp ρg｛［(34.15)2+0.05916×dp3 ρggμ2］12-34.15｝ It is found that the bed expansion height increases with the increasing of gas velocity, and increases with pressure for fixed value of UUmf, when the pressure exceeds 0.7MPa, the influence of pressure on the bed expansion height is weakened.

研究结果表明，大粒径聚苯乙烯颗粒的Umf与p-0.3成比例，小粒径石英砂的Umf与p-0.21成比例，并根据实验值拟合出压力下最小流化速度公式为： Umf=μdp ρg｛［(34.15)2+0.05916×dp3 ρggμ2］12-34.15｝床层膨胀高度随气速的增大而不断增高，在相同UUmf下床层膨胀高度随压力的增大而增高，在大于0.7MPa时，压力对膨胀高度的影响减弱。

The fluctuating deviation of bed voidage and theenhancement index of bed uniformity derived in this study can describerespectively the bed uniformity and its extent. A new criterion of demarcationof uniformity, composed of materialparameter, operating parameters (H0, u/umf) and vibrationparameters, can be used to predicting a suitable range ofbed uniformity.

对空隙率波动偏差的分析表明，振动参数、颗粒物性和操作参数均对床层均匀流化行为有不同程度的影响，且振幅和振动频率越大越能明显提高以小米或玻璃珠为物料的床层的均匀稳定性，而颗粒物性和操作参数直接影响振动能量在床层中的传播。

In addition, the effects of vacuity, bed height and frequency ...

建立了最小流化振动强度的经验关联式。

ABSTRACT This paper summarized the study and application state of the technology on coal dry beneficiation with common fiuidized bed and vibration fluidized bed , elaborated the theoretical basis that VFB can beneficiate fine coal.

本文综述了普通流化床干法选煤技术及振动流化床技术应用与研究的现状，阐述了振动流化床分选细粒煤的理论依据。研究了适合于细粒煤分选的振动流化。。。

Keywords Black mercury sulfide;Thickish hot hydrochloric acid;Hydrobromic acid;Hydroiodic acid;Dissolve

黑色流化汞；热浓盐酸；氢溴酸；氢碘酸；溶解

For this reason hydrodynamical characteristics of reduced pressure vibro fluidized bed was studied in the first place.

为此 ，首先进行了减压振动流化床流化特性的研究。

Nanoindentation and PSD test were used to examine influences of various mechanical and hydrodynamical parameters upon attrition modes of catalyst particles dominated by fragmentation and abrasion.

指出今后需在流化模型、计算模拟和细观力学性能测试等方面进行深入研究，以满足探索催化剂磨损机理和改善其磨损测试适用性的需求。

Key words: pipe reactor;spray-fluidized drying process;monoammonium phosphate;new technology

管式反应；喷雾流化干燥；磷酸一铵；新工艺

It is OK that this product mixes equably the stock of liquefaction, wait like pulverous, grain, tiny ball, mixture effect is very advantageous.

该产品均匀混合可以流化的物料，如粉末、颗粒、微丸等，混合效果非常优越。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。