【摘要】 采用4种方法对光叶楮白皮制化学浆进行了探讨,并且对光叶楮白皮亚硫酸铵法制浆工艺进行了优化,系统讨论了亚铵用量、尿素用量、蒽醌用量、液比、保温温度和时间对制浆效果的影响,确定出光叶楮白皮亚铵法制浆的最佳工艺条件为亚铵用量18%,尿素用量5%,AQ用量0.15%,液比1∶6,最高温度165℃,保温时间2h。最优化条件下纸浆的粗浆得率为50.3%,细浆得率为48.6%,高锰酸钾值为3.24,白度为51.0%ISO。更多还原

【Abstract】 The value for pulpwood raw material of Guangyechu, a bast containing fast growing species is evaluated, its white bast is pulping with 4 kinds of pulping processes. The process parameters of ammonium sulphite pulping are optimized. The optimum condition is as follows: dosage of ammonium sulphite 18%, carbamide 5%,AQ 0.15%, liquor ratio 1∶6,the time at maximum temperature of 165℃ 2 hours. The yield, K value and brightness of screened pulp are 48.6%, 3.24, 51.0%ISO respectively.更多还原