Bamboo supply preparation process

The invention discloses a bamboo supply preparation process, which comprises a pre-hydrolysis sulfate method replacement cooking process (PHK method), a single-stage medium-concentration oxygen delignification process (O stage) and an ECF elemental chlorine-free (D0-Eop-D1-P) four-stage bleaching process, and specifically comprises the following steps: (1) loading normal bamboo chips into a pot; (2) steaming and hydrolyzing the bamboo chips; (3) neutralizing white liquor; (4) performing hot liquid filling; (5) cooking; (6) performing replacement; (7) performing cold blowing; (8) performing a conventional screening and washing procedure; (9) carrying out single-stage medium-concentration oxygen delignification; and (10) performing ECF four-stage bleaching process. The bamboo pulp preparation process is simple in technology, smooth in process and stable in product quality, and meets the industrial standard. The preparation process of the bamboo pulp has the significance that the bamboo wood which is easy to obt