air separation unit FORTUNE innovated the small Air Separation Unit, which is designed for Low-pressure process. In operation, the advanced technics eliminated the mass power consumption charactereistic of conventional designs. In order to meet the flexible operating demands of customers, we have developed the process and 50% to 150% output alterability is available under special design. FORTUNE's large and medium-size Air Separation Unit, which has the less-power consumption to customers' various demands, uses the normal-temperature molecular sieve purification system and booster tubine expander.