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Minimizing chlorinated organics in pulp bleaching processes
Minimizing chlorinated organics in pulp bleaching processes
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机译:减少纸浆漂白过程中的氯化有机物
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摘要
The invention relates to methods for reducing the amount of halogenated organics produced during a halogen bleaching process for lignocellulosic pulp fibers. According to the disclosed invention, it has been discovered that the use of a chelating agent prior to a non-halogen containing bleaching stage of a pulp bleaching process is effective to increase the brightness of the resulting bleached pulp without the need to increase the amount of halogen compounds required to obtain the same pulp brightness and without adversely affecting the pulp viscosity and yield.
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