This 2250L supercritical CO2 waterless dyeing equipment can produce 600 tons of polyester fiber cheese yarn per year, and also greatly improves the printing and dyeing efficiency, without the need for cleaning, drying, and other processes, shortening from 8-12 hours of traditional water dyeing to 3- 4 hours. At the same time, the carbon dioxide medium is non-toxic and harmless, and the cost is low. The whole operation process is closed and can be recycled and reused. The thermal energy consumption is only 20% of the original process. The device realizes the automatic control of the large cycle of cheese degreasing and the inner cycle of dyeing, with a high degree of automation, saving manpower, and can remotely display, record, and trace the pressure, temperature, flow, and liquid level of each equipment during the working process.
The white raw yarn enters the dyeing kettle through the dyeing shaft, and the pressure pump then presses CO2 into the system, and the heater immediately heats it. After reaching the specified pressure and temperature conditions, the computer system automatically turns on the circulating pump for dyeing. After cyclic dyeing, the red yarn comes out of the kettle. The process takes less than two hours, compared to seven hours with traditional techniques.