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Cooler,Air Separation Unit,Cooling Towers,Exhaust Gas Recovery System
Products:
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.