1. Intelligent Control of Core Process Parameters

Intelligent Closed-Loop Control of Vacuum Degree

- Real-time pressure monitoring, automatic adjustment of vacuum pumps, frequency conversion, and exhaust valves

- Stabilize boiling points to ensure low-temperature, constant, and gentle evaporation

- Prevent material loss, boiling over, and reduced heat exchange efficiency caused by vacuum fluctuations

Intelligent Adjustment of Heating Temperature/Steam Volume

- Frequency conversion control of steam valves/hot water valves

- Maintain operation with the minimum effective heat transfer temperature difference

- Protect heat-sensitive materials from overheating and coking

Intelligent Control of Feed Liquid Level

- Interlocking of liquid levels in evaporators, separators, and liquid storage tanks

- Automatic adjustment of feed pumps, circulation pumps, and discharge pumps

- Prevent dry burning, tank overfilling, liquid hammer, and material loss with liquid entrainment

Intelligent Control of Circulation Flow/ Liquid Distribution

- Frequency conversion control of circulation pumps to ensure optimal liquid film thickness

- Avoid excessively thick films (high thermal resistance) or excessively thin films (dry walls)

- Automatically increase flow rate/speed for high-viscosity materials

2. Intelligent Energy-Saving Control of MVR/Heat Pump Systems

MVR is most commonly used in low-temperature evaporation, and intelligent control is crucial:

- Automatic adjustment of compressor frequency, current, and temperature rise

- Closed-loop control of secondary steam pressure, temperature, and superheat

- Automatic matching: evaporation capacity ↔ compressor load

- Prevent surging, overload, and liquid hammer

- Achieve operation with maximum energy efficiency (COP)

3. Intelligent Online Monitoring and Diagnosis

Online Calculation of Heat Exchange Efficiency

- Real-time calculation of heat transfer coefficient K

- Determine scaling, coking, and uneven liquid films

- Automatically remind for cleaning/maintenance

Online Estimation/ Detection of Material Concentration

- Combine density, conductivity, refractive index, and temperature

- Automatically determine the concentration endpoint

- Automatically switch between discharge and liquid replenishment

Condition Monitoring of Key Equipment

- Monitor current, vibration, and temperature of pumps, compressors, and vacuum pumps

- Early warning of faults to reduce downtime

4. Intelligent Prevention of Scaling, Frosting, and Material Loss

- Automatically judge scaling trends and initiate online cleaning/sponge ball/chemical cleaning

- Refrigeration-type low-temperature evaporators: intelligent defrosting (time + temperature + pressure difference linkage)

- Interlock of separator liquid level and gas velocity to prevent mist entrainment and material loss

5. Fully Automatic Process Control (One-Key Start/Stop)

Start-up: Vacuum pumping → Preheating → Feeding → Evaporation → Concentration → Discharging

Shutdown: Cooling → Vacuum breaking → Cleaning → Shutdown

Automatic abnormal protection: Emergency shutdown for overheating, overpressure, low liquid level, and overload

6. Remote Monitoring and Digital Management

- Remote viewing via mobile phone/computer: temperature, vacuum, flow rate, concentration, energy consumption

- Historical curves, data records, and report export

- Centralized control of multiple devices, suitable for factory automation