Continuous processing method of flame-retardant cellulose chopped fiber and obtained flame-retardant cellulose chopped fiber

The invention discloses a continuous processing method of flame-retardant cellulose chopped fiber and the obtained flame-retardant cellulose chopped fiber, wherein the method comprises the steps of impregnating opened cellulose chopped fiber with a swelling solution, removing free water from the impregnated cellulose chopped fiber, optionally drying with hot air or removing redundant moisture by acrawler-type transmission curtain through a high-temperature area so as to control the moisture regain of the fiber, then applying a flame-retardant aqueous solution of a tetramethylolphosphonium compound to the obtained cellulose chopped fiber, draining, dehydrating and drying, then performing ammonia fumigation and oxidation on the cellulose chopped fiber, and then cleaning, dehydrating and drying to obtain the flame-retardant cellulose chopped fiber. Compared with the strength of the existing flame-retardant regenerated cellulose chopped fiber, the strength of the flame-retardant cellulosechopped fiber prepared by