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当次氯酸钠遇上氨基磺酸,漂白效果更好吗?
来源:http://www.jnjrh.com 日期:2019-10-18 发布人:admin
  工业级次氯酸钠为无色或淡黄色液体,为强氧化剂,具有消毒、漂白作用;氨基磺酸为无色斜方晶系结晶或白色结晶体,易溶于水和液氨,在水溶液中能电离,且呈强酸性。啊,一个为强氧化剂,一个呈强酸型,当次氯酸钠遇上氨基磺酸,是不是干柴遇上了烈火……下面,氨基磺酸行业资深工程师津南大化工厂的杨工,从造纸工行业为例,在浆料漂白过程中采用氨基磺酸作为漂白助剂,抑止次氯酸对纤维素的过度氧化,以减少纤维素的降解,到达维护甲纤的目,来予以深化浅出的阐明。
  , industrial grade sodium hypochlorite is a colorless or light yellow liquid, which is a strong oxidant and has the function of disinfection and bleaching; aminosulfonic acid is a colorless rhombic crystal or white crystal, which is easy to dissolve in water and liquid ammonia, which can be ionized in aqueous solution, and is strongly acidic. Ah, one is a strong oxidant and the other is a strong acid. When sodium hypochlorite meets sulfamic acid, does the dry firewood meet a fire? Now, Yang Gong, senior engineer of sulfamic acid industry, jinnanda chemical plant, takes papermaking industry as an example. In the process of pulp bleaching, sulfamic acid is used as bleaching assistant to prevent the excessive oxidation of cellulose by hypochlorite, so as to reduce the degradation of cellulose and reach the goal of maintaining alpha fiber, so as to deepen and explain.
  当次氯酸钠漂白溶液中HOC1成分增加,因HOC1的氧化性强而招致纤维素氧化加剧,形成甲纤损失;氨基磺酸的H:NSO,一能够耗费漂液中过量的HOC1,从而减少纤维素的降解,反响如下:
  When the composition of hoc1 in sodium hypochlorite bleaching solution increases, the oxidation of cellulose will be intensified due to the strong oxidation of hoc1, resulting in the loss of methylcellulose; H: NSO of sulfamic acid can consume excessive hoc1 in the bleaching solution, so as to reduce the degradation of cellulose. The response is as follows:
  H2NSO3一+HOC1=C1HNSO3一十H20
  H2nso3-1 + hoc1 = c1hnso3-10 H20
  C1HNSO3一+HOC1=C12NSO3一+H20
  C1hnso3-1 + hoc1 = c12nso3-1 + H20
  C12NSO3一+HOC1=NC13+HSO3一
  C12nso3-1 + hoc1 = nc13 + hso3-1
  从反响式看出,氨基磺酸中的HNSO一与HOC1反响生成C1HNSO3一,C1HNSO一与HOC1继续反响生成C12NSO,一,C12NSO3一在HOC1的作用下,继续离解成NC1和HSO一。
  It can be seen from the reaction formula that hnso-1 in sulfamic acid reacts with hoc1 to generate c1hnso3-1, c1hnso-1 reacts with hoc1 to generate c12nso, I, c12nso3-1 continues to dissociate into NC1 and hso-1 under the action of hoc1.
氨基磺酸
  在这一系列反响中,氧化性强的HOC1被耗费,从而避免了纤维素被过度氧化,对甲纤起到了维护作用。
  In this series of repercussions, hoc1 with strong oxidation is consumed, so as to avoid excessive oxidation of cellulose, which plays a maintenance role for alpha fiber.
  但是,依据三十多年的氨基磺酸用于次氯酸钠的漂白助剂的众多案例来看,杨工倡议,氨基磺酸漂白助剂的运用量,应依据次氯酸钠漂液中有效氯的转换率来肯定,若漂液中氨基磺酸添加量少,起不到维护甲纤的作用;若氨基磺酸加多了,会招致漂白时间延长,且漂后浆的白度降低、粘度升高,也不利于成浆质量。
  However, according to many cases of sulfamic acid used as bleaching aid for sodium hypochlorite for more than 30 years, Yanggong proposes that the application amount of sulfamic acid bleaching aid should be determined according to the conversion rate of effective chlorine in sodium hypochlorite bleaching solution. If the amount of sulfamic acid added in the bleaching solution is small, it will not play the role of maintaining methylfiber; if the amount of sulfamic acid added is large, it will lead to the prolongation of bleaching time, and After bleaching, the brightness and viscosity of the pulp decrease and increase, which is not conducive to the pulp quality.
  氨基磺酸作为次氯酸钠的漂白助剂参与纤维素漂白反响,可取得以下良好效果:
  Aminosulfonic acid, as a bleaching assistant of sodium hypochlorite, can participate in the reaction of cellulose bleaching, and the following good results can be achieved:
  1、能够进步漂后浆白度和甲纤含量,从而进步浆粕质量。
  1. It can improve the brightness and alpha fiber content of bleached pulp, so as to improve the pulp quality.
  2、氨基磺酸能和NaOH反响生成氨基磺酸盐,将其参加漂白液中能抑止纤维素的剥皮反响和其它降解反响,从而减少漂液用量。
  2. Sulfamic acid can react with NaOH to form sulfamic acid, which can prevent the peeling reaction and other degradation reaction of cellulose in the bleaching solution, so as to reduce the amount of bleaching solution.
  3、浆料白度稳定性进步,浆料返黄率降落,可减少漂白剂的用量。
  3. The brightness stability of the pulp is improved, the yellowing rate of the pulp is reduced, and the dosage of bleaching agent is reduced.
  4、漂白时间明显缩短,相应进步了浆粕产量。
  4. The bleaching time was shortened obviously, and the pulp yield was improved correspondingly.
  5、消费排出的废水中的有机氯含量减少,减轻对环境的污染。
  5. The content of organic chlorine in the waste water discharged by consumption is reduced to reduce the environmental pollution.
  行文至此,歌手杨臣刚演唱的一句歌词突然跃上脑际:“我爱你爱着你,就像老鼠爱大米”,是啊,当次氯酸钠遇上氨基磺酸,就像老鼠爱大米——氨基磺酸作为次氯酸钠的漂白助剂,进步了次氯酸钠的漂白力度和质量。
  At this point, a lyric sung by singer Yang Shenggang suddenly leaped to his head: "I love you, just like mice Love Rice". Yes, when sodium hypochlorite meets sulfamic acid, just like mice Love Rice - sulfamic acid, as the bleaching agent of sodium hypochlorite, improves the bleaching strength and quality of sodium hypochlorite.
  以上是氨基磺酸厂家为大家介绍的相关内容,本文来源:http://www.jnjrh.comThe above content is introduced by the manufacturer of sulfamic acid. The source of this article is: http://www.jnjrh.com