The invention relates to a clean pulping method of linters, which is a pioneering invention belonging to the field of
environmental protection. The clean pulping method is technically characterized that the linters are conveyed into a stainless steel container I after the
processing steps of cotton opening, dust removing and
impurity removing;
potassium base
peroxide (details are disclosed in the patent of the utility model of 200620138146.3) manufactured by an ionic membrane exchanger on the spot is added for pretreatment; sundries such as waxiness,
colloid,
sugar, and the like in a
slurry are cleared so as to improve the whiteness of the
slurry to 60 percent ISO; the
slurry is conveyed to a stainless steel container II, and
peroxide and
oxygen are added; under the
catalysis of
ultraviolet light and the temperature of 80 DEG C, hydroxyl free radicals and
active oxygen free radicals are generated so as to break away
chromophore groups and auxochromic groups in the slurry;
hemicellulose and
lignin in the slurry are further degraded, the
polymerization degree of fibers is reduced, and the whiteness of the slurry is improved to 85 percent ISO; the slurry is conveyed to a stainless steel pressure container, and the temperature in the stainless steel pressure container is risen to 120 DEG C and preserved for 100 minutes so as to ensure that the
polymerization degree is reduced to 50+ / -10; and through the
processing steps of screening, deslagging, press-rolling and
drying, qualified cotton pulp is manufactured. The whole process of the clean pulping method has no
black liquor, no emission of waste water and waste
slag and no poisonous and harmful substances.