Drying process in viscose staple fiber production

Abstract

The invention relates to a drying process in viscose staple fiber production. The drying process is characterized in that viscose staple fibers are opened by a wet opener, enter a pre-drying device for pre-drying, are fed into a dryer for drying by a feeder, finally enter a fine opener for opening through a cotton conveying fan, and are packed, and waste heat discharged by the dryer enters the pre-drying device for direct pre-drying through an exhaust fan. The waste heat in the drying process is directly used for pre-drying the fibers, so that the water content of the fibers is reduced, and the temperature of the fibers is increased. Except that a driving motor and the exhaust fan consume energy, any other energy is not consumed.

Description

technical field [0001] The invention relates to the technical field of viscose staple fiber, in particular to a drying process in the production of viscose staple fiber. Background technique [0002] The drying process of viscose staple fiber is completed by the unit composed of wet opener, fiber feeder, dryer, temperature regulating device and fiber conveying device. The wet opener is used to open the staple fiber before the drying process; the main function of the fiber feeder is to evenly spread the viscose staple fiber opened by the wet opener on the conveyor belt of the dryer after carding; At present, the commonly used dryer is a rotary screen dryer. The air is drawn out from the cylinder by the fan and diffused, and blown to the surface of the net through the heater. Due to the negative pressure in the cylinder, the fibers are adsorbed on the cylinder without baffles. On the half of the surface, the hot air enters the cylinder through the fiber layer to dry the fiber...

AI Technical Summary

Problems solved by technology

[0004] 1. Cyclone conveying is only suitable for the conveying of dry fibers. Because wet fibers have viscosity, it is not conducive to air conveying, so the equipment cannot be used normally for a long time

[0005] 2. The production capacity of cyclone conveying is small, and the scope of use is restricted

[0006] 3. Because the cyclone conveying requires a large air volume, and the use of drying waste heat has a small air volume, the air volume needs to be added to balance, and the newly added air volume needs to be heated, the equipment is complicated, and the energy consumption is increased

[0007] 4. The cyclone conveying cannot be effectively adjusted according to the production capacity, and the system cannot realize automatic adjustment

Images