Explosion proof experimental distillation double tower continuous device distillation separation device

Explosion proof experimental distillation double tower continuous device distillation separation device

1、 Product Overview

The explosion-proof experimental distillation double tower continuous device is a laboratory grade distillation separation equipment designed specifically for fields such as chemical engineering, pharmaceuticals, and new energy. The device adopts a double tower series/parallel design, which can operate independently or in combination, and can achieve various separation processes such as atmospheric distillation, vacuum distillation, azeotropic distillation, and extraction distillation.

The entire device fully considers laboratory safety requirements and is equipped with an explosion-proof electrical control system, suitable for purification and separation experiments of flammable and explosive organic solvents. It is an ideal choice for fine chemical research and development, pharmaceutical intermediate purification, solvent recovery and other scenarios.

2、 Structure and Composition

2.1 Twin Tower System

This device consists of two sets of tower bodies, distillation tower 1 and distillation tower 2, with the following technical parameters:

Parameter item Distillation tower 1 (conventional separation tower) Distillation tower 2 (auxiliary separation tower)

Tower body specification: φ 26 × 1000mm glass packed tower, φ 26 × 1200mm vacuum silver plated distillation column

Packing Type Stainless Steel θ Mesh Ring Packing Stainless Steel θ Mesh Ring Packing

Five measuring ports are configured on the side for easy multi-point sampling without side ports, resulting in better sealing

Thermal insulation method: electric tropical heating insulation, outer wall conductive film heating insulation

Real time display of temperature instrument for measurement accuracy, with an accuracy of ± 0.1 ℃

The tower body is made of high borosilicate glass material, which is corrosion-resistant and high-temperature resistant. At the same time, it can visually observe the gas-liquid contact and mass transfer process inside the tower, which is of great significance for teaching demonstrations and process research.

2.2 Core component configuration

·Heating system: 2 stainless steel heaters, each with a power of 0.6kW, using explosion-proof electric heating tubes, temperature and tower top reflux automatic interlocking control

·Condensation system: Two snake tube condensers are installed at the top of the tower, one of which is an oil-water phase separation structure suitable for azeotropic distillation operations

·Feeding system: 2 sets of 250mL high-level glass feeding bottles, equipped with peristaltic pumps for precise control of feeding flow rate (adjustable from 0.1-100rpm)

·Vacuum system: including vacuum pump, buffer tank, valve, vacuum pressure gauge, capable of achieving wide range pressure control from 1-1000mbar

·Temperature monitoring: 5 K-type thermocouple thermometers, temperature measurement range 0-100 ℃, accuracy level ± 0.1%

·Reflux ratio controller: 2 sets of reflux ratio independent control, can accurately adjust the ratio of reflux rate to extraction rate

·Liquid flow meter: 2 LZB-6 rotor flow meters, flow range 0.2-2L/h

2.3 Control System

The device is equipped with an intelligent instrument control system, which adopts PID regulation+thyristor phase-shifting voltage regulation control method, and the temperature control accuracy can reach ± 1 ℃. The system features include:

·485 communication interface: can be connected to the upper computer to achieve remote monitoring and data acquisition of the computer

·Manual/Automatic Dual Mode: Supports manual operation and fully automatic program control

·Multiple safety protections: over temperature protection, dry burn protection, and leakage protection

·Touch screen operation interface: optional tablet touch computer, fully digital control throughout the process

3、 Working principle

Distillation is the process of separating components by utilizing the different volatility characteristics of each component in a liquid mixture and conducting mass and heat transfer through countercurrent contact between gas-liquid phases.

The workflow of the dual tower system in this device is as follows:

```

Raw material liquid preheater distillation tower 1 (middle feed)

↓

┌┴┐

↓ ↓

Tower top (light component), tower kettle (heavy component)

↓ ↓

The cooling part of the condenser vaporizes and returns

↓ ↓

Reflux distribution (partial return) tower bottom product extraction

↓

Product collection (can enter tower 2 for secondary distillation)

```

Key control parameters:

·Reflux ratio: The ratio of the amount of liquid refluxed into the tower at the top to the amount of product at the top of the tower is a core parameter that affects the separation efficiency. The higher the reflux ratio, the higher the separation purity, but the energy consumption also increases accordingly

·Theoretical number of trays: The packed tower of this device can reach 10-50 theoretical trays, with significant separation efficiency

·Operating pressure: normal pressure/reduced pressure (10-100kPa)

4、 Functional Features

4.1 Diversified operating modes

Characteristics of Applicable Scenarios for Operation Modes

Single tower independent operation, single component preliminary separation process, simple and fast verification

Double tower series high-purity products require two-stage distillation with a purity of ≥ 92%

Twin tower parallel processing of different materials with large processing capacity and high efficiency

Decompression distillation of thermosensitive materials reduces operating temperature and minimizes decomposition

The azeotropic distillation azeotropic system is equipped with an oil-water phase separator to break through the azeotropic limitation

4.2 Engineering Design Concept

·Box layout: The device has a compact structure with dimensions of approximately 2600 × 2200 × 4000mm, equipped with universal wheels and locking feet, making it easy to move

·Aluminum profile frame: Exquisite aluminum profile frame, flame retardant and durable

·Engineering identification: including equipment tag number, pipeline flow arrow and identification, warning signs, etc., in compliance with engineering equipment specifications

·Transparent observation section: The tower body is equipped with a glass observation section, which can observe the gas-liquid mass transfer process on the tower plate in real time

4.3 Security Protection Configuration

·Explosion proof electrical control box: all electrical components are centrally arranged and installed in isolation

·Overpressure protection: Install safety valves to prevent system overpressure

·Anti dry burning protection: tower kettle liquid level monitoring to prevent damage from dry burning of the heater

·Grounding protection: The entire machine is reliably grounded

5、 Application Fields

5.1 Typical Material System

·Ethanol water system: commonly used teaching experimental materials, with a tower top product concentration of over 92%

·Fine Chemicals: Purification of Pharmaceutical Intermediates (Purity above 99.9%)

·Fragrance/essence: isomer separation

·New energy field: Refining of lithium battery electrolytes (ethylene carbonate, dimethyl carbonate)

·Solvent recovery: organic solvents such as DMF and THF are recovered with a recovery rate of ≥ 95%

5.2 Applicable Scenarios

·College Teaching: Chemical Engineering Principles Experiment, Distillation Operation Training

·Research institutes: process development, small-scale research

·Enterprise R&D: Exploration of Purification Process for New Products

6、 Technical advantages

6.1 Twin tower synergy advantages

Comparison item: Single tower device, dual tower device

Medium to high separation accuracy (capable of two-stage distillation)

Operation flexibility Single mode Multiple combination modes

Fixed and scalable processing capacity (parallel operation)

Research and development adaptability suitable for conventional materials and complex systems

6.2 Performance Comparison

Compared to traditional plate towers, the packed tower design used in this device has the following advantages:

·Pressure reduction: The theoretical plate pressure drop per meter is only 0.01-0.3kPa, which is about 1/5 of that of a plate tower

·High separation efficiency: Regular packing HETP can reach 0.15-0.5 meters

·Small liquid holding capacity: suitable for heat sensitive materials with short residence time

·High operational flexibility: adaptable to different processing demands

Explosion proof experimental distillation double tower continuous device distillation separation device

The explosion-proof experimental distillation double tower continuous device combines high separation efficiency, operational flexibility, and safety reliability, making it an ideal equipment for laboratory separation and purification in fields such as fine chemicals, pharmaceuticals, and new energy. This device can provide stable and efficient separation solutions for university teaching demonstrations, scientific research and technology development, as well as enterprise pilot tests.

For more technical details or customized configurations, please contact Tianjin Beiyang Lixing Technology Co., Ltd. We will provide you with professional technical support and services.