Pulp impurity removal method based on novel solvent system spinning

The invention belongs to the technical field of new textile materials, and particularly relates to a pulp impurity removal method based on novel solvent system spinning. The impurity removal method for the pulp comprises the following steps: immersing the pulp in a treating fluid, carrying out filter pressing after the immersing is finished, and collecting a filtrate, so as to obtain the impurity-removed pulp, the treating fluid is an alkyl ammonium hydroxide aqueous solution. According to the impurity removal method, hemicellulose and impurities in the pulp can be effectively removed, and the influence of the hemicellulose and the impurities in the pulp on subsequent dissolution and spinning is eliminated; moreover, the impurity removal treatment can improve the solubility of the pulp in a novel solvent system, and when the impurity-removed pulp is subjected to spinning in the novel solvent system, the solubility of the pulp in the novel solvent system is obviously improved; filaments obtained after spinning