METHOD FOR PREPARING BIOMECHANICAL PRIMARY COLOR PULP FROM WHEAT STRAW

The present invention belongs to the field of paper technologies and new materials， and specifically relates to a method for preparing a biomechanical primary color pulp from wheat straw. The present invention involves first pre-treating grass as a raw material with hot water and hot steam， adding a trace amount of an alkali for a further hydrothermal saturation and softening treatment， and then adding an alkaline biological enzyme for an enzymatic treatment， and pulping and washing same. The method of the present invention does not require alkali recovery during the whole production process， thereby avoiding the pollution to the environment caused by the source. The technology complies with the national industrial policies of resource conservation， economic cycle， energy conservation and emission reduction. The present invention overcomes the problems of difficult recovery and serious pollution of alkaline waste water from straw pulp in the prior art， and is of great significance to the industrialized production of straw pulp and the development of the paper industry.