【作者】 孙楠楠；

【导师】 于钢；

【作者基本信息】 东北林业大学 ， 林产化学加工工程， 2004， 硕士

【摘要】 本论文主要针对碱性脱墨的缺点和弊端，探索研究了一种适应废旧新闻纸脱墨的新的工艺方法——中性脱墨。主要选用了多种具有不同功能的表面活性剂，采用洗涤法脱墨路线。通过各种表面活性剂的单独和复配作用，考察表面活性剂的复配能力和在中性条件下的脱墨作用，选择出适应本次实验的最佳的中性脱墨剂。探讨中性脱墨过程的最佳工艺条件，讨论各实验因素对脱墨效果的影响。通过漂白实验、与碱性对比实验和检测实验，考察中性脱墨浆的各种性能，以探讨中性脱墨实验的适用性和应用性。研究结果表明： (1)通过表面活性剂、机械和加热的作用，可以实现中性条件下的脱墨。 (2)表面活性剂的复配在中性脱墨过程中起到很大的作用。非离子表面活性剂的复配能力较强。一般来说，随着脱墨剂中应用的表面活性剂种类的增多，对浆中油墨粒子的脱除作用增多，脱墨效果增强。 (3)在本次实验范围内，对中性脱墨剂的工艺条件的确定，可依据不同的实际情况，进行合理选择。 (4)中性脱墨简化了脱墨工艺过程，需加入的化学试剂种类较少，成本降低；脱墨废水COD值较低，对环境的污染负荷较少，降低废水处理成本；中性脱墨浆具有良好的漂白能力；能接近或达到碱性脱墨的成纸白度。更多还原

【Abstract】 Aiming at the disadvantage of alkaline deinking, this article discussed the deinking of recycled newspaper under neutral condition. This experiment used some surfactants that have different function to deink by washing. We reviewed the complex and deinking capability of some surfactants under neutral condition by the action of single or complex surfactants, and choose the optimum technics of neutral deinking for this experiment. The optimum technics of neutral deinking and the effect of experiment factor on deinking was also investigated This paper studied the capacity of neutral deinking pulp through, bleaching experiment, the compare with alkaline deinking, and detect experiment, to research into the applicability of neutral deinking experiment. The results showed as follows:(1)The neutral deinking can be realized by the action of surfactant, mechanism and heating.(2)The complex of surfactant has an effect on neutral deinking. The complex capability of nonionic surfactant is better. Usually speaking, the species of surfactant is more, the function of the deinking agent to take off the ink particle is better.(3)In this experiment, we can choose a reasonable neutral deinking technics base on the fact.(4)The neutral deinking make the deinking technics flow easier, the chemical reagents that needed is fewer; the cost is reduced, the COD of waste water is lower, the cost to deal with the waste water is decreased and be friendly to the environment; the neutral deinking pulp has better capable of bleaching, can be close or reach to the brightness of alkaline deinking pulp.更多还原