Cryogenic air separation（ASU）, engineered to order
Worldwide installation · Technical response within 24 hours
Cryogenic air separation（ASU）, engineered to order
Worldwide installation · Technical response within 24 hours
TECHNOLOGY
Delivering high-purity nitrogen (-196 °C) and advanced cryogenic solutions engineered specifically for rubber recycling, cryogenic grinding, and tire vulcanization lines.
Core separation technology
Typical distillation temperature
Automation platform
Process configuration
Cryogenic separation relies on the difference in boiling points between nitrogen (-196 °C), argon (-186 °C), and oxygen (-183 °C). Feed air is compressed, purified, and cooled until it partially liquefies, then fed to a distillation column.
EQUIPMENT
The cold box contains the heat exchangers, distillation columns and cryogenic piping in a single insulated structure. A well designed cold box reduces heat leak, shortens site installation and simplifies transport of large plant sections. Internal layout must allow for maintenance access, thermal movement and piping flexibility at low temperature — factors fixed during detailed design and difficult to correct later. Refrigeration itself is normally produced by expanding part of the compressed air through a turbo expander, and its selection sets the plant’s specific power.
01
Turbo expander selection
Efficiency and turndown determine how the plant behaves at part load, not only at design point.
02
Heat exchanger design
Approach temperatures and pressure drop drive both energy consumption and capital cost.
03
Modular cold box
Workshop assembly and function testing shorten the site programme and make verification possible before shipment.
AUTOMATION
Plants are controlled by PLC or DCS with operator, engineer and historical stations, and an independent safety interlock layer for liquid level, hydrocarbon content, compressor surge and expander overspeed. Guaranteed values — flow, purity, pressure and specific power in kWh per Nm³ — are stated at defined ambient conditions, load and product pressure, and verified at the performance test.
01
Load control
Automatic control across the designed turn-down range so purity and pressure hold at part load.
02
Safety interlocks
Independent protection layer for the trips that matter in an oxygen plant.
03
Performance testing
Contractual flow, purity, pressure and power figures verified on site before handover.
START WITH YOUR PROCESS
Send your gas requirement and site conditions — we will propose the configuration and the performance figures behind it.
+8618066130855
haishuoenergy@haishuoairsep.com
8618066130855
8618066130855
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18066130855
18066130855
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