恒沸精馏

恒沸精馏分离硝基氯苯的研究

Study on Separation of Nitrochlorobenzene by Azeotropic Rectification

采用恒沸精馏方法来分离水和丙二醇单甲醚，并以UNIFAC热力学方程作为物性计算方法进行了全流程模拟计算。

By using azeotropic distillation method to separate water from PGME and calculating with UNIFAC thermodynamic equation as state equation , the process simulation is conducted and corresponding technological coefficients are worked out .

用恒沸精馏技术从工业废水中回收吡啶

Recovering Pyridine from Industrial Waste Water by Means of Continuous Distillation

恒沸精馏模拟计算共沸蒸馏法制备电气石超细粉末

The preparation of ultrafine tourmaline powder by azeotropic distillation method

恒沸精馏法生产无水酒精

Production of Anhydrous Alcohol by Constant Boiling Rectification Method

恒沸精馏模拟计算燃料乙醇热泵恒沸精馏新工艺的研究

Study on the Technology of Heat Pump Rectification in Production of Fuel Alcohol

加盐萃取-恒沸精馏&从工业废酸水中回收醋酸

Combination Technology of Salt-Containing Extraction-Azeotrope Distillation to Recover Acetic Acid from Industrial Waste Water

加盐萃取&恒沸精馏联合过程的研究Ⅰ.醋酸-水体系的分离

A combined process of salt extraction with azeotropic distillation for separation of acetic acid-water mixtures

对无水酒精恒沸精馏工艺中恒沸精馏塔进行模拟计算。

Analog calculation of az eo tropic rectification tower in the process of anhydrous alcohol was done .

本文以节能为目的，介绍了“加盐萃取-恒沸精馏”联合过程提浓醋酸研究过程。

A new technological process for separating acetic acid-water mixtures aiming at energy conservation is described in this paper .

结果表明，热泵恒沸精馏技术节约生产过程能耗56%，显著优于传统恒沸精馏生产工艺

The results show that the technology could reduce 56 % energy on the production process . SIMULATION OF AZEOTROPIC DISTILLATION

在工业上，三相共沸精馏过程或称之为非均相恒沸精馏过程在近年来逐渐表现出其特殊应用和巨大的实用价值。

A topic of great practical and particular industrial interest in recent years has been three-phase azeotropic distillation or heteroazeotropic distillation .

工业生产中常用苯、环己烷、正戊烷等作夹带剂进行恒沸精馏生产无水乙醇。

Benzene , cyclohexane and normal pentane etc. are frequently used as entrainers in industrial production of anhydrous alcohol through constant boiling and fine distillation .

在φ20精馏装置上进行叔丁醇水正己烷三元非均相恒沸精馏，获得了99.9%的无水叔丁醇。

Ternary heterogeneous Azeotropic distillation of tert . - butyl alcohol - water-hexane is carried out on a φ 20 rectification device . Dehydrated tert .

为解决传统燃料乙醇生产过程中能耗大的问题，将热泵技术与传统恒沸精馏工艺相结合，开发出热泵恒沸精馏生产新工艺。

In order to reduce the energy consumption of producing process of traditional fuel alcohol , we adopt the technology that uses the heat pump to save the energy .

恒沸精馏是分离近沸点与恒沸物系的重要手段，挟带剂量是影响恒沸精馏分离性质的重要因素。

Azeotropic distillation technique is an important way to separat close-boiling or azeotropic systems , in which the flow of entrainer is an important factor to affect separation property .

在分析传统恒沸精馏生产无水酒精工艺方法的基础上，重点分析了燃料乙醇热泵恒沸精馏新工艺的原理、优点和能耗问题。

It combines the common constant boiling rectification with the heat pump technology . The principle , advantage and energy consumption problem of the new fuel alcohol technology using heat pump rectification are studied .

与现有的求传质单元数的公式比较，该式具有形式简单，适用于理想溶液各种进料状况以及某些二元恒沸精馏系统的优点。

Compared with the existing equation to calculate the number of transfer units , the new equation is simple and suitable for use under various feeding conditions of ideal solution and some binary azeotropic distillation systems .

主要介绍了醇–水体系分离的几种工艺和新方法，其中包括传统的恒沸精馏和萃取精馏等主流工艺，以及膜蒸馏、渗透汽化和膜接触器等新型膜分离技术。

This paper introduces several separation technologies for alcohol-water system , which include not only traditional azeotropic distillation and extraction distillation , but also new membrane separation techniques , such as membrane distillation , pervaporation and membrane contactor .

采用由单螺旋片静态混合器、重力层析器与非均相恒沸精馏塔相组合的流程，三乙胺的回收率达98%以上，且操作简便、节能显著。

Percentage recovery of triethyl amine is > 98 % with a process using a helical-element static mixer , a gravity decanter , and a heterogeneous azeotropic distillation tower . Energy consumption is low and the operation is convenient .

采用单塔间歇恒沸精馏法将异丙醇与水分离，从含水12.6%左右的醇溶液可制得含水小于0.5%的异丙醇产品，醇的回收率达97.0%。

A single column batch azeotropic distillation method applying to separation of isopropanol-water system is suggested . Product isopropanol ( water amount less than 0.5 % ) is obtained from aqueous isopropanol containing 12.6 % water , recovery of isopropanol is 97 % .

恒沸精馏技术条件：酸性含吡啶的废水经加碱中和后，在92.6℃下进行恒沸精馏（蒸出率取30%，回流比取3￣4）得到粗吡啶；

Conditions were as follows . After neutralization by adding base to the acidic waste water containing pyridine , continuous distil - lation was conducted at 92.6 ℃ ( evaporation rate was 30 % with 3 to 4 refluxes ), and impure pyridine was obtained .