精馏

The tower structure is especially applicable to the process of methylal synthesis.

与传统塔型比较，该结构简单、催化剂易装卸，催化剂利用率高，易于建立催化精馏过程的模型和模拟放大，特别适用于甲缩醛合成催化精馏过程。

The model for the process of methylal synthesis by fluidized catalytic distillation was established and was used to simulate and design the process. A 1000t/a methylal production unit was built and the test run was conducted with success.

从提出流化催化精馏新型塔结构入手，在本征动力学、宏观动力学、甲缩醛合成流化催化精馏模型与模拟设计和工业性试验等方面，进行了系统的理论和实验研究，取得了一系列研究结果，并获得了1000吨／年甲缩醛合成装置的试车成功。

Based on an industrial DMF recovering plant, chemical miscellany performance has been discussed in this paper with the modeling method meanwhile.

以DMF回收的开车过程精馏塔为背景，分析了精馏塔开车过程这个混杂系统的行为特性和建模方法。

In order to solve some problems existed in the fractionation section of paraxylene unit, state space models for xylene column and its reboiler furnaces in the section were set up by analyzing the mechanism and the influence factors.

针对对二甲苯装置二甲苯精馏单元在操作和控制中存在的问题，从机理出发，建立该单元二甲苯精馏塔及其重沸炉的状态空间模型，基于多变量预测控制技术开发了该单元先进控制系统。

And in the process control, will face a difficult problem, is effective in resolving the issue of VCM distillation, the quality of refined products for the VCM is especially important in light of our factory production processes perchlorethylene characteristics and the actual situation of VCM a distillation of Frequently Asked Questions.

而在该过程控制中，会遇到一个个棘手的问题，能否有效解决好VCM精馏问题，对于VCM精制产品质量则显得尤为重要，结合我厂氯乙烯生产的工艺特点和实际情况，对VCM精馏常见问题作一浅析。

In allusion to the complexity in developing a strict dynamic mechanism model of distillation column and the trouble in applying the mechanism model, an optimal BP algorithm combined with conjugate gradient and self adaptive variable step is proposed, and a predicting model of distillation column is built.

针对建立精馏塔严格动态机理模型的复杂性以及机理模型应用的诸多不便，提出了一种综合共轭梯度和自适应变步长的优化BP算法，并利用该优化BP算法建立了精馏塔的预测模型。

C~Builder program design ; sieve plate distillation column ; computer-aided design ; two component continuous distillation

C++Builder程序设计；筛板精馏塔；计算机辅助设计；两组分连续精馏

Calculation method of tower skit height in erect hot siphon and calculation formula are introduced in this paper.

介绍了立置热虹吸式再沸器精馏装置中精馏塔裙座高度的计算方法，并推导了计算公式。

It also had the good applyingprospective in the batch distillation and the azeotropic distillation.

在间歇精馏、共沸精馏中有着良好的应用前景。

It also had the good applying prospective in the batch distillation and the azeotropic distillation.

在间歇精馏、共沸精馏中有着良好的应用前景。

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。