Wood Pulping - Papierherstellung

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Referat, Hausaufgabe, Wood Pulping - Papierherstellung
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Referat
WOOD PULPING 1. Alkaline Pulping Processes 1.1. Kraft (Sulfate) Pulping The sulfate or kraft process exhibits a higher selectivity of delignification and, for this reason, has almost completely replaced the older soda or sodium hydroxide pulpingg process. Only in the case of annual plants that are easily cooked has the soda process been able to assert itself because the sulfate process offers no distinct advantages. The predominant position of the kraft process is, above all, due to ist applicability to almost all lignocellulose-containing raw materials, ist low senstitivity to variations in the quality of raw materials, and the excellent technological properties of the resulting pulps. Furthermore, the original disadvantages of the kraft process, such as poor bleachabibility of the ...

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Referat
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