查询词典 aspen

The following points are emphasized:The operation models of adiabatic and diabatic distillation have been set up and the operation block, thermodynamics model and mathematical model in the simulation have been determined as well;(2)Based on the simulation and exergy analysis with Aspen Plus program, shortcut distillation design—DSTWU model and rigorous distillation design—RADFRAC model, the author has determined the heat duty, exergy losses and the distribution of exergy losses along the adiabatic column, which will help the simulation and optimization of the diabatic distillation;(3)Diabatic distillation under various operation conditions has been simulated by using energy balance method and exergy analysis;(4)How the different mixture and the various degree of separation, number of trays and feed location influence exergy saving in diabatic distillation have also been discussed;(5)On the basis of the total exergy losses along the column, different schema of the heat transfer distribution along the column have been compared and analyzed;they can be classified in three categories: heat duty equipartition approach, empirical approach, separation degree matching approach. In conclusion, different heat transfer distribution along the column will have effect on total exergy losses. In particular, most satisfactory results have been obtained by using separation degree matching approach. In order to diminish the exergy losses, heat transfer distribution should meet the needs of the request of separation degree.And on this premise, the author makes his suggestion in increasing the proportion of heat supplied to the tray with minimum exergy losses and decreasing the proportion of heat supplied to the tray with the maximum exergy losses.

本文对透热精馏过程进行了模拟并对其节能效果的影响因素做了较为全面的分析和深入的研究，主要研究内容如下：(1)建立了常规精馏和透热精馏过程的模拟操作模块、热力学模型以及数学模型；(2)利用化工模拟软件Aspen Plus并分别采用DSTWU简捷模型和RADFRAC严格计算模型对常规精馏进行模拟计算和有效能分析，确定常规精馏塔的公用工程热负荷、有效能损失及有效能损失在塔内的分布，为透热精馏的模拟和优化提供数据参考；(3)对不同物系在不同分离度条件下进行透热精馏的模拟，分别采用能量衡算法和有效能分析法进行计算和分析；(4)探讨了各种因素如物系的选择、不同分离度、塔板数、进料位置对透热精馏节能效果的影响；(5)以全塔总有效能损失为比较基准，对热量在塔内的三种分布方案即热负荷平均分配法、经验法和分离度匹配法进行了对比分析并得出结论：塔内热量的不同分布方案对于全塔总有效能损失会产生影响，其中以分离度匹配法的节能效果最为理想，为减少有效能的损失，应使塔内的热量分布满足各塔板的分离度要求，并在此前提下，尽量减小有效能损失大的塔板的热负荷和增加有效能损失小的塔板的热负荷。

The distillation process is simulated by using Aspen Plus with the DSTWU fractionation module and the NRTL property method results showed that 99.9% methylnaphthalene and almost 100% tritoluene could be recovered.

利用Aspen Plus化工模拟软件的DSTWU精馏模块对产物进行模拟运算。结果表明：采用NRTL物性方法的模拟计算结果能够满足工艺要求，甲基萘回收率可达99.9%，溶剂回收率可达100%。

In this paper, research and development of microanalysis simulation model abroad is reviewed firstly, and the structure, model-building technology of ASPEN is analyzed particularly.

本文首先考察了国外微观分析模拟模型的研制及发展情况，并重点分析了美国ASPEN微观分析模拟模型的结构，先进建模技术等。

We were on a ski lift in Aspen and I fell.

在Aspen我们坐在雪橇上然后我"意外摔落"

Therefore, Dr. Ciechomska and her coinvestigators wanted to see if ultrasound would accurately identify the features of nerve compression in patients with CTS. They obtained ultrasound images of 126 wrists in 52 patients who had been diagnosed as having CTS by EMG. They also obtained ultrasound images of the wrists of 22 healthy people. They used the Aspen unit (Acuson, Aliso Viejo, California), which was equipped with a linear, wideband transducer at 6 to 11 MHz.

Ciechomska和她的研究同僚于是对超音波进行研究，确定超音波是否可以正确的侦测出腕隧道症候群患者受到压迫的神经；研究人员从52位患者处获取了126个手腕超音波造影，这些患者皆经肌电图证实患有腕隧道症候群；同时，研究人员也取得了22位健康者的腕部超音波造影以为对照；所使用的仪器为Aspen (Acuson公司，位于加州Aliso Viejo市)，配备一线性的宽频电能转换器，频率设定在6到11 MHz。

Refer to the ideas of 《artificial life》 and ASPEN model, using this methods andtechniques suggested above, the author gave an evaluting example of aritifical society whichdevelop from the single resource collection and autarkic society to a society with single marketand trade ability, Studied and explained the typical phenomenon in life.

借鉴《人工生命》和ASPEN模型的思想，采用上面所提出的方法和技术，给出了一个从单纯资源采集和自给自足到具有单一市场和贸易能力的&人工社会&的演化例。

The extractive distillation process of benzothiophene was simulated using the software of Aspen plus.

采用Aspen plus软件模拟计算硫茚的萃取精馏，并通过了实验的校核。

The extraction rectification process for benzothiophene was simulated by Aspen Plus software, by analyzing the sensitivity of column feed position, solvent ratio, reflux ratio, etc., their respective optimized values were defined, and the the temperature control proposal for sensitive plate was discussed.

用 Aspen Plus 软件模拟硫茚的萃取精馏工艺，通过对精馏塔进料位置、溶剂比和回流比等参数的灵敏度进行分析，确定了相应的优化值；并讨论了灵敏板温控方案。

The process of propylene fractionating rectifying tower was simulated by adopting Aspen Plus software and selecting SK-SOAVE model as simulation tower.

利用 Aspen Plus软件对丙烯精馏塔进行了模拟计算，选取其中的SK-SOAVE模型模拟丙烯精馏塔。

A steady-state simulation model was set up for the hydroxylamine oximation of HPO process for Baling Filiale of China Petro.LTD by using Aspen Plus in this thesis.

本文以化工过程模拟软件Aspen Plus为模拟工具，建立了中石化巴陵分公司HPO法生产己内配胺流程中环己酮肟化装置的计算机仿真模型。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。