Method for producing cotton pulp for acetate fibre
A technology of acetate fiber and production method, which is applied in the direction of man-made filament made of viscose, etc., can solve the problem of high efficacy, and achieve the effects of improving reactivity, reducing power consumption for beating and reducing water consumption.
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Embodiment 1
[0027] When producing products with a high degree of polymerization, that is, when the DP is 1500-2500;
[0028] After the slurry is discharged from the twin-screw refiner, it is washed, desanded, and made. Its technological process is:
[0029] A. After the cotton linters are opened, add water to moisten the cotton during transportation to the twin-screw refiner, and measure during the transportation;
[0030] B. The wetted cotton linters enter the twin-screw refiner, add water again before the forward spiral in the first stage of the machine, wash the cotton linters, squeeze them in the reverse spiral area and drain through the filter plate, and drain them in the second stage Add water and wash again; in the above two sections, the linters are squeezed, rubbed and cut off, and the dryness of the slurry is controlled, and the liquid medicine is added in the third section, mixed with the linters quickly, cut off again, and Control the dryness of the discharged slurry;
[00...
Embodiment 2
[0047] When producing products with medium and high degrees of polymerization, that is, DP: 1000-1500;
[0048] After the slurry is discharged from the twin-screw refiner, it is temporarily stored in the silo or directly enters the second group of twin-screw refiners for the second washing, liquid mixing, and beating processes in the twin-screw refiner, and then automatically The twin-screw refiner is discharged, and the process of washing, desanding and copying is carried out. Its technological process is:
[0049] A. After the cotton linters are opened, add water to moisten the cotton during transportation to the twin-screw refiner, and measure during the transportation;
[0050] B. The wetted cotton linters enter the first twin-screw refiner, add water again in the forward spiral area of the machine, wash the cotton linters, squeeze in the reverse spiral area and discharge the washing water through the filter plate , and control the dryness of the slurry, add water in t...
Embodiment 3
[0078] When producing products with a low or medium degree of polymerization, that is, DP: 500-1000;
[0079] After the slurry is discharged from the twin-screw refiner, it is temporarily stored in the silo or directly sent to the batch cooker for cooking. After the cooking is completed, the washing, bleaching, sand removal and copying processes are carried out. Its technological process is:
[0080] A. After the cotton linters are opened, add water to moisten the cotton during transportation to the twin-screw refiner, and measure during the transportation;
[0081] B. The wetted cotton linters enter the first twin-screw refiner, add water again before the forward and reverse spirals in the first section of the machine, wash the cotton linters, add water in the second section and then wash; in the above two sections , the linters are squeezed, rubbed and cut off, and the liquid medicine is added in the third section, and quickly mixed with the linters;
[0082] C. After the ...
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