Refrigeration Unit | Stable and Reliable Process Flow, Suitable for Multiple Scenarios

Refrigeration Unit | Stable and Reliable Process Flow, Suitable for Multiple Scenarios

Refrigeration Unit | Stable and Reliable Process Flow, Suitable for Multiple Scenarios

In the fields of fine chemical and pharmaceutical industries, the temperature control accuracy of reaction tanks is directly related to product quality and production safety. Guanya constant temperature variable frequency freezer is reshaping the temperature control logic of chemical reaction tanks by dynamically adjusting the compressor speed and refrigerant flow rate.

1、 Working principle of variable frequency freezer

1.Core components of variable frequency freezer

Compressor: using variable frequency screw/Centrifugal compressor adjusts the speed through a frequency converter to dynamically match the cooling requirements of the reaction tank.

Condenser: Shell and tube heat exchanger, utilizing circulating water/Air cooled refrigerant.

Evaporator: Plate heat exchanger design, combined with reaction tank cooling medium（Like ethylene glycol solution）Indirect heat exchange.

Control system:PLC+PIDcontroller+PT100Sensors, realizing±0.5℃Temperature control accuracy.

2.Chemical reaction tank integrated system

Cooling medium circulation: chilled water→Reaction tank jacket→evaporator→Frozen water forms a closed-loop cycle.

Security protection: equipped with over temperature alarm, pressure interlock, flow monitoring and other modules to ensure the safe operation of the system.

3.Advantages of Variable Frequency Control

Accuracy: ThroughPIDThe algorithm adjusts the compressor frequency in real-time and has a fast response speed.

Reliability: Soft start technology reduces current surges and extends equipment lifespan.

2、 Typical application scenarios and cases of variable frequency refrigerators

1.Fine chemical reactions

case1Low temperature polymerization reaction

Requirement: Control the temperature of the reaction kettle-15℃±1℃Ensure the stability of polymer molecular weight.

Solution:30HPVariable frequency freezer+Ethylene glycol indirect cooling system.

case2Temperature control for exothermic reactions

Requirement: A certain nitrification reaction needs to be maintained10℃Constant temperature to prevent side reactions.

Solution:50HPVariable frequency freezer+Dual circulation cooling circuit.

2.Synthesis of pharmaceutical intermediates

case3Low temperature crystallization process

Requirement:-25℃Low temperature environment ensures crystal stability.

Solution:80HPVariable frequency low-temperature freezer+Silicone oil circulation cooling.

3、 Selection strategy for variable frequency freezer

Cooling Capacity Calculation: Guanya Thermostatic Engineers Provide Calculation Services for You

Temperature control accuracy: selected according to process requirements

Media compatibility: Consider the material of the reaction tank（Such as stainless steel and enamel glass）Compatibility with cooling medium.

Safety configuration: Explosion proof rating.

Customized solution for variable frequency freezer requires the provision of reaction tank type（Such as enamel glass kettle, stainless steel kettle）Process conditions（Temperature range, pressure, medium characteristics）Environmental requirements（Explosion proof rating, humidity control, etc）Wait, Guanya Constant Temperature will provide equipment selection quotation based on detailed requirements.