Industrial refrigeration unit | High precision temperature control, stable and reliable temperature control

Industrial refrigeration unit | High precision temperature control, stable and reliable temperature control

Industrial refrigeration unit | High precision temperature control, stable and reliable temperature control

Small refrigeration units play an important role in key links of chemical production due to their compact structure, accurate temperature control, and high energy efficiency. The following are their specific application scenarios and technical implementations:

1、 Chemical reaction process control

Exothermic reaction temperatureyimanufacture

Application scenarios: Strong exothermic processes such as polymerization reactions (such as polyethylene synthesis) and nitration reactions.

Technical Implementation: Through-15The jacket of the reaction kettle is cooled by circulating a ℃ ethylene glycol aqueous solution to quickly dissipate the heat of reaction and prevent side reactions caused by temperature exceeding the critical value.

Construction of low-temperature reaction environment

Application scenario: Should be used in-30Fluorination reactions and low-temperature catalytic reactions conducted below ℃.

Solution: Adopting a stacked refrigeration system,-80℃ meets special process requirements.

Chemical reaction temperature control

Application scenario: Synthesis of high-purity compounds or pharmaceutical intermediates

Solution: Need to maintain±0.5℃ or even ±0.2Accurate temperature control of ℃. For example, the combination of stacked refrigeration systemsPIDThe algorithm adjusts the refrigerant flow rate in real-time to ensure stable temperature inside the reaction vessel (e.g-30± under ℃ working conditions0.3Temperature fluctuation control).

Rapid removal of reaction heat

Application scenario: High heat release processes such as nitrification reactions

Solution: The secondary cooling structure can achieve rapid response and avoid safety hazards caused by local overheating.

2、 Separation and purification process

Low temperature crystallization purification

Application case: Chemicals such as benzoic acid pass through-30Gradient cooling at ℃ achieves high-purity crystallization.

Device configuration: Built inPIDAlgorithm, supporting multiple program temperature control curves (such as45℃→25℃→5℃ segmented cooling).

Gas liquefaction separation

Technological breakthrough: In gas cooling treatment, gas liquefaction temperature is reduced and liquefaction efficiency is improved through cascade refrigeration.

Key component: Shell and tube evaporator

3、 Supporting vacuum freeze-drying process

Process linkage: working in conjunction with freeze-drying machines, through-50The ℃ cold trap quickly captures sublimated water vapor, improving drying efficiency.

Energy consumption optimization: Integrated heat recovery module, waste heat is used to preheat the feed liquid, reducing overall energy consumption.

4、 Temperature control and explosion-proof requirements for storage tanks

For the storage of chemicals in flammable and explosive environments, explosion-proof units are used in conjunction with multi-level redundant protection (dual circuit power supply, leak monitoring, etc.) to ensure safety.

Small refrigeration units are particularly suitable for various cold source requirements in chemical processes for small and medium-sized chemical enterprises. In practical applications, the selection needs to be based on customer operating conditions. If there are any problems during the selection process, you can contact the small refrigeration unit manufacturer Guanya Constant Temperature to solve them.