机构地区: 华南理工大学轻工与食品学院制浆造纸工程国家重点实验室
出 处: 《造纸科学与技术》 2007年第1期32-35,共4页
摘 要: 本文探讨了蔗渣浆二氧化氯和添加活化剂的H2O2两段漂白,在有效氯用量12kg/t,H2O2用量12kg/t,活化剂A用量1.5kg/t的情况下,D(PA)两段漂白可以达到D(EOP)D三段漂白(有效氯、NaOH和H2O2用量分别为30kg/t、13kg/t和1kg/t)相同的白度和粘度。本文还借助数学模型来优化过氧化氢漂白工艺。在优化程序中,设白度、粘度权重为1。返黄值权重为0.5。残余H2O2权重为0.25。得出(PA)段优化漂白条件:H2O2用量15kg/t,A用量1kg/t,温度86℃,时间144min,结果:白度80.1%ISO,返黄值0.437,残余H2O20.056g/L,粘度853cm3/g。 In order to reduce the bleaching stage, the two stage bleaching of chlorine dioxide and hydrogen peroxide boosted by an activator was studied in this paper and the sequences were optimized with mathematic model. The results indicated that D(PA) two stage bleaching with dosages of 15kg/t active chlorine ,12kg/t H2O2 and 1.5kg/t activator A could reach the same level of brightness and viscosity as those of D(EOP) D three-stage bleaching with charges of 30 kg/t active chlorine, 13 kg/t NaOH and 3 kg/t H2O2. The optimal conditions for (PA) stage were as follows: H2O2 15 kg/t, temperature 86℃ , time 144rain, A 1kg/t with the results of brightness 80.1% ISO,post color number 0. 437, residual H2O2 0. 056g/L, viscosity 853 cm^3/g.