精馏

The influence of reflux ratio, theoretical plate, feed position and feed temperature to distillation process are discussed.

甲醇精馏过程模拟计算时，用NRTL模型校正液相非理想性，得出的较佳操作条件：回流比4.5～5.O，理论板30～33块。

For these reasons, aiming at the low temperature separate method of light hydrocarbon recovery, the simple and accurate SRK state equation has been used to calculate the components thermodynamic characters of natural gas. This paper simulates the units process of the light hydrocarbon recovey process such as flow mixer/spilliter, flash, pump, valve, compressor, expander, distillation and heat exchange etc., and give examples to contrast calculation for each unit process.

为此，针对轻烃回收低温分离法工艺，以简单、准确的SRK状态方程为热力学计算基础模型，对轻烃回收工艺中的流股混合器、流股分割器、等温闪蒸器、绝热闪蒸器、泵、节流阀、压缩机、膨胀机、精馏过程及换热器等单元过程进行了模拟，并对各单元过程进行了实例对比计算。

This paper proposes a new mode of batch extractive distillation with two stills and two solvent inlets.

提出了带有塔底回收釜及双溶剂进口的间歇萃取精馏操作方式。

Based on the traditional mechanical model the buble point method of three diagonal matrix, an neural network model of gas-liquid equilibrium computation for liquid air, which makes system presure P and equilibrium component of liquid phrase x1,x2,x3 as input nodes makes system temperature T, equilibrium component of gas nitrogen y1, equilibrium constant of argon and oxygen k2, k3 as output nodes, insteads of the buble point computation of the three diagonal matrix , thus a improved distillation model is built.

在传统的机理模型三对角矩阵法中的泡点法基础上，将体系压力P，平衡液相组成x1， x2， x3 为输入节点体系温度T ，平衡汽相氮组成y1 及氩、氧的相平衡常数k2， k3 为输出节点的神经网络液体空气汽液平衡计算模型，取代三对角矩阵法中泡点计算，从而建立改进的精馏塔模型改进模型用于空分塔的模拟计算，不仅计算速度快，计算结果与机理模型结果非常接近，且符合设计要求，对实现产品质量的在线监控具有一定的指导意义

This paper regard distillation tower as N stirrers in series on each which gas fully contacts with liquid and reaches equilibrium with liquid.

本文采用平衡级理论将空分精馏塔视为N个串级的搅拌槽，在每一级上汽液充分接触并达到平衡。

Recent research used an aNN to determine the operating conditions for a crude oil distillation column.

最近的研究使用aNN来确定原油精馏塔的操作条件。

Recent research used an Ann to determine the operating conditions for a crude oil distillation column.

最近的研究使用aNN来确定原油精馏塔的操作条件。我想给安·阿勃挂个叫号电话。

Now , most of gas-seperating device of oil-refining factory are still using the seperation of distillation .

当前各炼厂的气体分离装置大部分仍然采用精馏分离。

In order to satisfy the demend of the technology, drew a flow flate, and made an accurate calculation for all aspects of the tower as follows: the technology condition, the data of material quality, the tower body, the size of the tower plate.

本设计为了满足生产工艺的要求，绘制了工艺流程图，对精馏塔进行物料衡算和塔的工艺条件及物性数据进行了计算，并对塔体、塔板工艺尺寸作了计算。

The vapour-liquid equilibrium composition on the various plates and the theoretical plate number of the plate tower, reaction volume of multistage continuous stir reactor and the theoretical stage number of multistage extraction can be calculated by this method.

介绍了Excel中填充柄的特点，并对其在板式精馏塔各块塔板上的汽-液平衡组成与理论板数、串联全混流反应器的反应体积和多级萃取的理论级数应用中给出了详细的操作步骤和计算实例。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。