热敏物料的冷存料复合式分批精馏塔精馏过程

提出了冷存料的复合式分批精馏塔 ,建立了恒摩尔持液数学模型 ,模型计算结果与实验结果吻合良好 ,并对该设备分离热敏物料的可靠性进行了分析 ,结果表明 ,采用冷存料的复合式分批精馏塔分离热敏物料是合适的 .     

分批精馏塔新型操作方式及其应用

对所开发的几种分批精馏塔新型操作方式的基本原理和研究进展作了阐述 ,并介绍了这些新型操作方式在精细化工和制药工业中的应用     

塔的计算机辅助设计

介绍计算机辅助设计（ＣＡＤ）技术在塔盘设计中的应用。采用ＡＵＴＯＣＡＤ内嵌的ＡＵＴＯＬＩＳＰ语言编写板式塔塔盘工艺参数计算程序和塔盘绘图程序。使用该程序进行塔盘设计，可以节约大量时间，并获得满意的设计效果。     

多罐复合式分批精馏塔的设计

为了开发多罐复合塔简单易行的设计方法,建立了多罐复合塔的恒摩尔持液模型,并用平衡程度系数概念考察了全回流过程中塔内各板和各罐内接近平衡的情况,在综合考虑所需塔板数和操作时间的基础上提出了设计中确定全回流操作终点的方法,给出了多罐复合式分批精馏塔的设计方法,该方法确定的板数能较好地完成分离任务。     

多元间歇精馏塔生产调度的优化

在间歇精馏塔单塔操作优化的基础上，实行多塔生产调度的优化。适当地安排各座塔的处理任务，按一定的规律交替地处理原料和中间产物，使其所需的时间为最短。本文提出的启发式优化调度方案简单易行，得到的生产调度直方图直观易读。仿真结果表明，经济效益显著，且可推广解决类似的工业生产调度问题。     

氨精馏塔的自动控制

本文介绍了中原化肥厂合成氨装置氨回收单元精馏部分的仪表控制方案及其实情况。     

换热器计算机辅助设计

把换热器的设计和计算机辅助设计的概念相结合,提出了换热器设计的一个系统模型。考虑到换热器结构形式的多样性及影响换热性能因素的复杂性,较好地解决了人机互补问题及与绘图软件AutoCAD的相结合问题。对列管式换热器进行了具体实现。整个系统分成两部分:辅助设计计算部分和辅助设计制图部分。具有良好的适应性和人机友好性。     

精馏塔分级最优控制的探讨

精馏控制是非常复杂的,其方案亦非常多,以一个精馏为例,应用多级递阶结构,按照关联平衡的协调原则,将精馏过程分解为回流量调节,物料平衡与能量平衡等三个子系统,并以回流量作为协调变量,去操纵物料平衡和能量平衡,以此实现对精馏塔的最优控制。     

间歇精馏塔启动过程的模型化

引　言在以往的研究中 ,间歇精馏塔的模型大部分建立在平衡模型的基础上[1] ,系统初值的选取基于伪热初始状态 ,即每层塔板上有足够的积液量 ,塔板温度在泡点温度以上的汽液平衡状态 .多数间歇精馏过程的仿真模拟软件中使用伪热状态作为初始状态[2 ] ,例如 ,ＨＹＳＹＳ Ｒ○ (Ｈｙｐｒｏｔｅｃｈ )、ＢＡＴＣＨＦＲＡＣＴＭ (Ａｓｐｅｎｔｅｃｈ )和ＣＣ -ＢＡＴＣＨ Ｒ○(ＣＨＥＭＣＡＤ) .它们都是通过稳态和平衡计算为微分代数方程组提供了满足一致性要求的初始值 .间歇精馏过程的一个特点就是精馏塔频繁地从冷状态启动 ,初始状态会因再…     

香茅油间歇精馏塔的工艺计算

对300t/a香茅油间歇精馏塔进行物料衡算,根据物料衡算的结果对精馏塔的操作温度、最小理论板数、理论板数、最小回流比、操作回流比和塔径等进行计算,获得塔体的工艺和设备参数。     

醚化蒸馏塔设计总结

大连石化公司汽油质量升级100万t/a轻汽油醚化装置醚化蒸馏塔具有塔内装有填料和塔盘、外形尺寸大、变径以及由于物料反应介质腐蚀性较大的特点,正确的设计对于醚化蒸馏塔的长周期安全使用具有重要意义。阐述了醚化蒸馏塔的主体材料选用、结构型式和制造安装技术要求编制等方面的设计要点。     

反置式间歇蒸馏塔的设计程序(Ⅰ)多组分理想物系

Inverted batch distillation column(stripper) is opposed to a conventional batch distillation column(rectifier). It has a storage vessel at the top and products leave the column at the bottom. The batch stripper is favourable to separate mixtures with a small amount of light components by removing the heavy components as bottom products. In this paper, we are presenting a shortcut procedure based on our earlier work for design and simulation of the inverted batch distillation column, which is equivalent to the Fenske-Underwood-Gilliland procedure for continuous distillation. Given a separation task, we propose to compute the minimum number of stages(Nbmin) and the minimum reboil ratio(Rbmin) required in a batch stripper,which are the stages and reboil ratio required in a hypothetical inverted batch distillation column operating in total reboil ratio or having an infinite number of stages,respectively. Then, it is shown that the performance of inverted batch columns with a finite number of stages and reboil ratios could be correlated in Gilliland coordinates with the minimum stages Nbmln and the minimum reboil ratio Rbmin.     

塔板布置的计算机辅助设计

提供了一种简单而有效的利用计算机辅助进行塔板布置的方法。给出了相应的计算内容和程序。有较好的通用性。适用于浮阀塔板和筛孔塔板。     

带有中间储罐的塔用于间歇萃取精馏

Batch extractive distillation was studied in a column with a middle vessel. The process was simulated by a constant holdup model and solved by two point implicit method. Acetone and methanol mixture was separated in such a setup using water as solvent. The simulation agrees well with experimental results. The experimental and simulation results show that the solvent at the bottom and the product at the top of the column can be withdrawn simultaneously for a long period of time. It needs more time for the solvent to reach high purity than that required for the more volatile component to reach high purity, so that the time to withdraw solvent from the bottom is delayed.     

Batch Extractive Distillation in a Column with a Middle Vessel

Batch extractive distillation was studied in a column with a middle vessel. The process was simulated by a constant holdup model and solved by two point implicit method. Acetone and methanol mixture was separated in such a setup using water as solvent. The simulation agrees well with experimental results. The experimental and simulation results show that the solvent at the bottom and the product at the top of the column can be withdrawn simultaneously for a long period of time. It needs more time for the solvent to reach high purity than that required for the more volatile component to reach high purity, so that the time to withdraw solvent from the bottom is delayed.     

全回流-全馏出与变塔压联合的间歇精馏过程

A novel operation of batch distillation-combination of varying colum pressure and total reflux-total efflux is studied experimentally. In the operation, the product is accumulated at the top of the column under total reflux and then drained off completely, and the column pressure is varying in the whole process. This process has been industrialized successfully with large profits. The conventional mode of batch distillation is improved by this method effectively: the separation eficiency and the yield of product are increased greatly, the operation time is shortened and the production cost is cut down. Moreover, the amount of condensation water is decreased and the over-high reboiler temperature is lowered.     

带多个中间贮罐的新型分批精馏塔的研究

多罐分批精馏塔由多个分批精馏塔依次连接而成，它只在第一个塔的塔釜加热，在最后一个塔的塔顶设冷凝器。采用恒摩尔持液模型对多贮罐的新型分批精馏塔的研究结果表明：多罐分批精馏塔具有可同时获得多个高纯度产品、无过渡馏分、产率高、操作简单及节能的特点。对多罐分批精馏塔和常规分批精馏塔进行出较的结果显示：采用多罐分批精馏塔分离产品可获得的年利润远高于采用常规分批精馏塔。     

航空轮胎计算机辅助设计进展

计算机辅助设计在车辆轮胎设计中得到了广泛的应用,由于航空轮胎不同于车辆轮胎的特点,航空轮胎的计算机辅助设计进展较慢.介绍了目前国内航空轮胎计算机辅助设计的进展,提出了-些航空轮胎计算机辅助设计发展的建议和展望.     

甲烷氯化物装置精馏塔改进设计

运用相关关联式分析原有设备所存在的问题,提出经济和可行的改进方法,使新设备能适应装置扩能的需要.装置设计运行结果表明该方法准确可靠.