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What are the technical characteristics of a cold box?
Adiabatic and cold insulation
The cold box adopts insulation materials to encapsulate the heat exchanger and separator in a steel shell insulation box, forming a tight low-temperature environment to prevent the loss of cooling capacity.
The typical operating temperature range is+30 ℃ to -170 ℃, with a maximum design pressure of 5MPa, suitable for cryogenic separation processes.
Compact structure and heat exchange
The core component is an aluminum plate-fin heat exchanger, which has the characteristics of a large heat transfer area per unit volume (1500-2500m ²/m ³) and high heat transfer efficiency (total heat transfer coefficient 500-3000W/(m ² · K)).
The multi stream collaborative heat transfer technology can achieve synchronous heat transfer of 13 fluids, optimizing the cascade utilization of heat.
Adaptability to complex processes
Supporting complex working conditions such as multiphase flow and phase change heat transfer, meeting the needs of scenarios such as deep cryogenic separation of petroleum cracking gas and LNG liquefaction.
The flow channel design is fine, but attention should be paid to issues such as easy blockage and lack of corrosion resistance. A filtering device needs to be installed at the inlet.
Strict sealing and safety design
Equipment shrinkage in low-temperature environments may cause flange leakage, and it is necessary to use bolt cold tightening (tighten bolts when cooling to below -30 ℃) to prevent gas leakage.
Equipped with low-temperature interlock protection device, it automatically isolates the pipeline and releases pressure in case of abnormal conditions to ensure safe operation.
Intelligent monitoring and maintenance
Modern refrigerated containers are equipped with monitoring devices such as pressure gauges and temperature sensors, which can monitor parameters such as pressure difference and temperature in real time.
Regular maintenance includes cleaning the filter screen, thawing operations (injecting substances such as methanol), and system leak checks.
The cold box adopts insulation materials to encapsulate the heat exchanger and separator in a steel shell insulation box, forming a tight low-temperature environment to prevent the loss of cooling capacity.
The typical operating temperature range is+30 ℃ to -170 ℃, with a maximum design pressure of 5MPa, suitable for cryogenic separation processes.
Compact structure and heat exchange
The core component is an aluminum plate-fin heat exchanger, which has the characteristics of a large heat transfer area per unit volume (1500-2500m ²/m ³) and high heat transfer efficiency (total heat transfer coefficient 500-3000W/(m ² · K)).
The multi stream collaborative heat transfer technology can achieve synchronous heat transfer of 13 fluids, optimizing the cascade utilization of heat.
Adaptability to complex processes
Supporting complex working conditions such as multiphase flow and phase change heat transfer, meeting the needs of scenarios such as deep cryogenic separation of petroleum cracking gas and LNG liquefaction.
The flow channel design is fine, but attention should be paid to issues such as easy blockage and lack of corrosion resistance. A filtering device needs to be installed at the inlet.
Strict sealing and safety design
Equipment shrinkage in low-temperature environments may cause flange leakage, and it is necessary to use bolt cold tightening (tighten bolts when cooling to below -30 ℃) to prevent gas leakage.
Equipped with low-temperature interlock protection device, it automatically isolates the pipeline and releases pressure in case of abnormal conditions to ensure safe operation.
Intelligent monitoring and maintenance
Modern refrigerated containers are equipped with monitoring devices such as pressure gauges and temperature sensors, which can monitor parameters such as pressure difference and temperature in real time.
Regular maintenance includes cleaning the filter screen, thawing operations (injecting substances such as methanol), and system leak checks.
