A device and method for controlling oil-containing uniformity and stability of tow when acrylic fiber is oiled

Abstract

The invention relates to the technical field of spinning, and discloses a device and method for controlling the uniform oil-containing stability of the tow when acrylic fibers are oiled, including thick oil agent replenishment lines, oil agent circulation lines, and oil agent mother liquid transportation connected in sequence according to the flow direction line, conditioning and tempering oil tank, thin oil agent recovery line, conditioning tank; the oil circulation line is connected to the outlet of the conditioning tank, and the oil agent mother liquor conveying line is provided with a return flow of the oil agent mother liquor to the conditioning tank line; the oil mother liquor delivery line is provided with an oil filter, an oil heater, a Coriolis mass flow controller and a differential pressure mass flow controller in sequence according to the flow direction. In the present invention, a Coriolis mass flow controller and a differential pressure mass flow controller are connected in series before and after the oil mother liquor delivery line, and the combined control of the above two mass flow controllers can accurately and stably control the flow rate of the oil mother liquor. The flow rate and the composition of the oil agent bus can be adjusted, so that the acrylic fiber can be oiled evenly and stably.

Description

technical field [0001] The invention relates to the technical field of spinning, in particular to a device and a method for controlling the uniformity and stability of oil content in a tow when acrylic fibers are oiled. Background technique [0002] As we all know, in the process of chemical fiber spinning, oiling the fiber is an essential step. The reason is that the spinnability of chemical fibers is poor. When oiling, coating the surface of the fiber with spinning oil can make the fiber have good lubricating properties, excellent antistatic properties and a certain oil film strength, so that there is no lint in the fiber production process. , broken ends, reduce white powder, precipitates, etc. In addition, the spin finish also has a great influence on the post-spinning process of the fiber (including spinning, and then to the final fabric processing). In the spinning process of polyacrylonitrile fiber (acrylic fiber), oiling is also an essential process. Oiling can imp...

AI Technical Summary

Problems solved by technology

In fact, the influence of temperature on the refractive index of different substances is different, and the existing temperature deviation coefficient or temperature deviation table for temperature correction is not suitable for most other substances

Therefore, there is a deviation in the determination of the concentration of the oil mother liquor with a refractometer

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