汽油硫含量沿提升管高度增加而逐渐降低。
Sulfur content of gasoline reduces gradually along the riser.
提升管的进料段是裂化反应最复杂的区域。
The most complex part of RFCC is in the feed injection zone.
本发明还公开了相关的双提升管催化裂化装置。
The present invention also discloses relevant double lift pipe catalytic cracking apparatus.
粒径分布对于提升管反应器非常重要，应引起足够的重视。
Thus the particle size distribution in a riser reactor should be taken into full consideration.
催化裂化装置反应器、再生器、烟道、提升管斜插口等部位。
Reactor, regenerator, flue, inclined inserting mouth and so on in catalyst cracking apparatus.
提升管出口处的气体质量分数随着试件浸没深度的增大而减小。
The vapor mass fraction at the outlet of the elevating tube increases with the decrease of the driving liquid head.
并且使提升管反应器的流型更加接近活塞流，进一步减少返混。
The flux in the riser reactor is close to plug flow, which greatly demotes the back mixing.
各组分的浓度在入口附近变化剧烈，在提升管的上部，变化平缓。
The concentration of each component changes rapidly near the entrance, and becomes gently in the upper part.
这意味着，增加剂油比可以提高提升管的处理能力或降低装置能耗。
This means that the increase in C/Oratio can increase the capadty of riser. or reduce…
在此基础上，提出了两段提升管催化裂化新概念，并分析了其技术优势。
Based on the analysis, the new concept of two-stage riser fluid catalytic cracking (TSRFCC) was proposed, and the advantage of the TSRFCC technology was analyzed.
对LCC-A多产丙烯助剂进行了小型固定流化床评价和中型提升管评价。
The test results for LCC-A promoter for producing more propylene on small-scale fixed fluidized bed and medium-scale fluidized bed apparatus were described.
催化裂化提升管反应器数学模型基本上都是基于平推流反应器的假设建立起来的。
Mathematical models for Fluid Catalytic Cracking (FCC) riser reactors were built generally on the basis of assumption of "plug flow" pattern within risers.
对渣油的特点、渣油催化裂化面临的问题及传统提升管反应器的弊端进行了讨论。
Residue features, problems faced with RFCC and the disadvantages of traditional riser reactor have been discussed.
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。
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.
提升管反应器内气固两相在轴向和径向上都存在着流动、传热与反应的不均匀分布。
The axial and radial distribution of flow, heat and mass transfer of gas-solid two phase is very uneven in the reactor.
建立了前置烧焦罐式高效再生器催化裂化装置的提升管反应器和汽提段的动态数学模型。
A dynamic model of mechanism has been developed for the reactor and stripper of a fluid catalytic cracking unit (FCCU) with a high efficiency regenerator.
研究结果表明，在气固提升管中，局部颗粒浓度沿径向呈中心低，边壁高的不均匀分布；
The results show that the local particle concentrations are distributed non-uniformly in radial direction, with local particle concentrations lower in riser center and higher near the riser wall;
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。
With the riser height increases, the mass fraction of heavy oil reduces, while the weight of gasoline, LPG, gas and coke has been increasing.
该技术在提升管底部设置催化剂混合器，使催化剂在与原料油接触之前形成理想的环状流。
The technology is equipped with a catalyst mixer at the bottom of the riser, which can produce an ideal circular flow of catalyst before the catalyst contacts with the feed oil.
利用小型提升管催化裂化装置考察了提高原料掺炼量对催化裂化行为及产品主要性能的影响。
The influence of increasing vaccum residue in feedstocks on the performances and product properties of fluid catalytic cracking was investigated by using of a riser reactor pilot unit.
本实验根据流态化原理改造了原有的提升管中试实验装置，使其可以在加压条件下稳态操作。
According to particle fluiding principle, we revamp the pilot scale test riser to make it operate smoothly in the boosting pressure.
用该模型对在提升管再生器中的再生过程进行了模拟计算，分析了再生器中的温度场和速度场。
With this model, simulations were implemented for a riser regenerator, and the velocity field and temperature field in the regenerator were calculated and analyzed.
气力提升泵的水输送量反映了提升管进口的流速情况，而进口流速是衡量吸鱼效果的重要因素。
The water flow velocity in the suction pipe, which is crucial for evaluating the performance on pumping fish, can be measured by the pumped water flow rate of the riser in an air lift pump system.
研制的KH -2型喷嘴经济效益比KH - 1型有提高，还成功地解决了提升管的振动问题。
The type KH-2 ejector results in a higher benefit than KH-1. The problem of riser vibration has also been successfully resolved.
提出了一个用于描述流化催化裂化单元提升管反应器、沉降器及再生器动态行为的计算机仿真模型。
A model for a fluid catalytic cracking (FCC) unit which describes the dynamic behavior of the riser, particle separator vessel and the regenerator is developed.
由于原料油不断重质化，而且要求轻质油收率不断上升，因此对炼油装置提升管反应器的要求更加苛刻。
As increasing of heavy oil component in raw oil and rising of light oil yield, this result in stricter requirement for lift pipe reactor of oil refining unit.
在目前常用的提升管出口粗旋风分离器的锥体下都增加一个汽提器，形成了新型汽提式粗旋风分离系统。
A new rough cyclone separation system was designed by attaching a stripper to the cone bottom of the conventional rough cyclone separator.
英石油考虑在提升管裂口附近油污滚滚的地方喷洒分散剂，这样做也许比在海面喷洒的效果好上至少20倍。
BP thinks spraying dispersants into the oil plume where it leaves the riser may be 20 times more effective than waiting until it reaches the surface.
英石油考虑在提升管裂口附近油污滚滚的地方喷洒分散剂，这样做也许比在海面喷洒的效果好上至少20倍。
BP thinks spraying dispersants into the oil plume where it leaves the riser may be 20 times more effective than waiting until it reaches the surface.
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