riser height

The gas-solid heat transfer coefficient will decrease when height of riser increases.

并且在所有工况下随着床高的增加,相间换热系数会逐渐降低.

Generally, from the bottom to the top of the riser, the axial profiles of the averaged solids holdups become more uniform with the increased riser height.

气固提升管中，截面平均颗粒浓度沿轴向呈上稀下浓的不均匀分布，随床层高度增加轴向分布一般逐渐均匀；

Experimental results show that the feeding rate of liquid into the moving-bed column, liquid rising velocity of riser and height of particles in the moving-bed column have important influence on particles transport velocity, and the reason is given to the system pressure balance.

实验结果表明，密实移动床的进液量、提升液表观操作流速和密实移动床中的交换剂高度是影响固体颗粒提升速率的因素，并从压力平衡的角度对实验现象进行了解释。

The diameters of riser outlet, diameter of riser, riser volume and riser height for gating system can be calculated based on the table of simplified castings sectional area from equivalent riser diameter.

在当量热节直径根据简化后的铸件截面尺寸通过图表确定后，可以计算出冒口颈直径、冒口直径、冒口体积和冒口高度。

It is found that, with increasing superficial gas velocity, the axial pressure gradients are not always kept approaching a uniform distribution along the riser height;

结果表明，在表观气速增大的过程中气固提升管中的轴向压力梯度并非总是不断趋于均匀分布；

Technique character, riser design, tilting height and deformation avoiding of casting in tilting pouring casting process for cast steel has been introduced with examples.

对倾斜浇注工艺特点、冒口设计、倾斜高度和防止铸件变形等作了详细介绍并举出应用实例。

With increasing riser height, the average solid holdup at various axial locations of the riser decreases and becomes more uniformly distributed along the riser height.

提升管高度增加，提升管各高度截面上的平均固含率减小，其轴向分布也更加均匀。

Enter target riser height to be used in calculating the number of risers.

输入目标竖板高度,用来计算竖板的数量.

Influence of height and diameter ratio, downcomer and riser area ratio, and reactor bottom gap height to reactor performance is analyzed, in addition, span of reactor bottom gap height is optimized.

分析了反应器高径比、降流区与升流区面积比及反应器底隙高度对反应器性能的影响，确定了反应器底隙高度的取值范围。

The results show that the radial distribution of particle velocities always becomes less uniform along the riser height and finally reaches a parabolic profile in the upper section.

结果表明：沿提升管轴向，颗粒速度径向分布不均匀性逐渐增加，并最终趋于较为稳定的抛物线分布；

When the riser height is over 10 meters, variations of gasoline concentrations depend on the properties of feedstock and operating conditions.

在提升管高度为10米以下时汽油浓度随提升管高度增加而迅速增加，超过10米时，汽油浓度是增加还是减少取决于原料油物性和操作参数。

With the riser height increases, the mass fraction of heavy oil reduces, while the weight of gasoline, LPG, gas and coke has been increasing.

随着提升管高度的增加，重油的质量分率降低，而汽油、液化气、气体和焦炭的产率增加。

The temperature of gaseous oil, catalysts and the concentration distribution of products along the riser reactor height are predicted by applying the mathematical model developed in this paper.

运用建立的数学模型预测了不同工况条件下反应油气和催化剂颗粒温度沿提升管高度的分布和反应产物的浓度沿提升管高度的分布。