Zhongyu Instrument Reaction Distillation Device Mass Transfer Equipment Glass Distillation

Zhongyu Instrument Reaction Distillation Device Mass Transfer Equipment Glass Distillation

Design principle of reactive distillation unit

Reactive distillation combines chemical reactions with distillation separation to simultaneously complete reactions and product separation in a single device, significantly improving conversion rates and reducing energy consumption. The core of its design lies in:

1. ‌Synergistic reaction and distillation‌：

• The reaction products (such as low boiling point substances) are immediately removed through distillation, breaking the chemical equilibrium limit and pushing the reaction towards the product direction.

• For example, in esterification reactions, the generated water is continuously distilled and removed, resulting in a conversion rate close to 100%.

2. ‌Key structural design‌：

• ‌Integration of reaction section and distillation sectionThe reaction zone is usually located in the middle of the tower, with distillation and extraction sections set up above and below to ensure efficient synergy between reaction and separation.

• ‌Catalyst fillingThe reaction section needs to be filled with corrosion-resistant catalysts (such as solid acid catalysts) and consider the uniformity of fluid distribution.

3. ‌Optimization of operating parameters‌：

• It is necessary to balance the reaction temperature, pressure, and distillation reflux ratio to avoid catalyst deactivation or a decrease in separation efficiency.

Zhongyu Instrument Reaction Distillation Device Mass Transfer Equipment Glass Distillation

The design principle of glass distillation equipment is based on the difference in volatility of each component in the mixture, and efficient separation is achieved through multi-stage distillation and condensation. The core design points are as follows:

1. Core principles

• ‌Volatility differenceAfter heating the mixture, low boiling point components preferentially evaporate into steam, while high boiling point components remain in the tower kettle, and mass transfer is achieved through gas-liquid two-phase countercurrent contact

• ‌Multi stage separationThe tower is equipped with a distillation section (for purifying light components) and a distillation section (for concentrating heavy components), which maintain stable composition through reflux liquid

2. Key design parameters

• ‌Tray/PackingIncrease the gas-liquid contact area and improve mass transfer efficiency. Commonly used glass packing towers (such as ∅ 30 × 750mm) or sieve tray towers in laboratories

• ‌reflux ratioControl the reflux rate of condensate and affect the separation purity. Usually achieved through tower head adjustment

• ‌operating conditions: It is necessary to avoid flooding (too high gas velocity) or liquid leakage (insufficient gas velocity) and maintain the foam contact state

3. Typical structure

• ‌tower bodyHigh borosilicate glass material, corrosion-resistant and transparent, easy to observe

• ‌condenserCooling steam is liquid, partially refluxed, and partially collected as product

• ‌ReboilerHeating tower kettle liquid generates steam to maintain continuous operation

4. Application scenarios

Suitable for separating mixtures with a boiling point difference of less than 80 ℃, such as laboratory purification of organic solvents or azeotropes.