Industry Exhaust Gas Recovery System Stainless Steel Air Separation Unit Cooler

Cooler,Air Separation Unit,Cooling Towers,Exhaust Gas Recovery System

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Cold box is a set of high efficiency, adiabatic cold low temperature heat transfer equipment. The function of this system is to remove nitrogen, hydrogen, carbon monoxide and other impurities in argon gas.
It is often used in the process of deep cold separation, such as in the process of deep cold separation of petroleum cracking gas is used in the -100 ~ -140 ℃ work of the cold box. It consists of compact high-efficiency plate heat exchanger and gas-liquid separator. Because of the low temperature is very easy to dissipate cold, the requirements of extremely tight adiabatic cold, so the heat exchanger and separator with adiabatic materials are packaged in a box-shaped object, called the cold box.

The cold box consists of two parts:

One is the huge steel shell insulation box, and the other is the internal core aluminum plate-fin heat exchanger, where the design and manufacturing difficulties are concentrated. Multi-strand holding pressure mixture flow in which according to process requirements for complex, phase change heat transfer process, its operating temperature ~ general for +30 ℃ ~ -170 ℃:, the maximum design pressure of 5MPa. technical key has three aspects, including heat transfer calculations and mechanical structure design and hydraulic calculations. The three need to be closely coordinated to fully meet the process requirements, and to achieve high efficiency, pressure resistance, material saving, compact, small flow resistance, heat (cold) loss. At the same time of introducing the vacuum brazing furnace of American SW company, introducing the design process software, and purchasing Aspen-Plus and other software, we have basically mastered the calculation technology of ethylene cold box heat exchanger.