Laboratory analysis chiller | High flow pressure adjustable and customizable

Laboratory analysis chiller | High flow pressure adjustable and customizable

Laboratory analysis chiller | High flow pressure adjustable and customizable

The following is an application analysis and technical points of low-temperature refrigeration using a frequency conversion freezer with a chemical reaction tank, combined with the requirements of chemical reactions and equipment characteristics for comprehensive explanation:

1、 Working principle and core advantages of variable frequency freezer

1Dynamic refrigeration matching: The variable frequency compressor accurately matches the real-time heat load of the reaction tank by adjusting the speed, avoiding frequent start stop of traditional fixed frequency units. For example, in a highly exothermic polymerization reaction, frequency conversion technology can quickly respond to temperature fluctuations and maintain the reaction system in a stable state±1℃Internal stability.

2Low temperature cooling range: Supports-80℃Wide temperature range control up to room temperature, suitable for low-temperature synthesis, crystallization and other processes. For example, in the cryogenic treatment of chemical materials, it is necessary to-60℃The following have adverse effects.

2、 Typical Application Scenarios and Technical Adaptation of Variable Frequency Refrigerators

1Temperature control for exothermic reactions: For intense exothermic reactions such as nitration and sulfonation, it is necessary to quickly dissipate heat to prevent the reaction from getting out of control. The variable frequency freezer utilizes plate heat exchangers for heat dissipation, resulting in improved heat transfer efficiency compared to traditional designs.

2Low temperature synthesis and crystallization: In the synthesis of pharmaceutical intermediates, low-temperature environments（as-40℃）Can improve the purity of the product. The equipment needs to be equipped with ethylene glycol/Salt water refrigerant circulation system to prevent medium freezing.

3High pressure reactor matching: Integrated pressure compensation module, capable of withstanding pressure fluctuations inside the reactor and ensuring refrigerant circulation stability.

3、 Key Technologies and Innovative Design of Variable Frequency Refrigerators

1Intelligent control system:7Inch touch screen integrationPIDAlgorithm, supports multi-stage program temperature control（Like gradient cooling）The data recording function complies with the specifications.

2Heat exchange structure: The combination design of spiral pure water flow channel and shell and tube evaporator increases the heat exchange area to cope with instantaneous high heat load.

3Security protection mechanism: multiple alarm system（Abnormal pressure, insufficient flow, overload protection）The emergency stop function of the linked reaction kettle prevents safety accidents.

Variable frequency refrigerators are used for low-temperature refrigeration in chemical reaction tanks to meet the customized needs of fine chemicals and new materials. When selecting, process adaptability, safety redundancy, and full lifecycle operation and maintenance costs should be considered.