Application Of The Paper Chemicals An New Technology In The A Grade Cardboard Paper Manufacture

Nowadays due to the growing awareness of environmental protection,the cardboard as a renewable green materials,instead of some plastic,metal,glass and other packaging materials,a more ideal packaging choice,coated paper,white cardboard,newsprint have excess capacity,the market demand for containerboard is relatively high,so a lot of investments to build cardboard production line will be the current trends.In order to improve the market competitiveness of containerboard plant,we pay attention to track,the actual production of containerboard plant functional additives application and explore the use of functional additives suitable processes.The main track functional additives are: retention and drainage aids,dry strength agents,surface sizing agents,and defoamers,and the new techniques of machine utilization are introduced.During the production of kraft linerboard for retention and drainage aids tracking,retention and drainage aids used in the machine of CPAM/bentonite dual retention and drainage system,during the test,to maintain the same amount of tons of paper CPAM observe tons of paper bentonite use of the system volume changes affect retention filter aid effect,keeping constant the amount of bentonite tons of paper CPAM use tons of paper observed changes in the amount of system affect retention filter aid effectiveness,and ultimately integrated into the paper quality indicators,cost and other factors determining CPAM tons of paper used in an amount of 0.25~0.35kg·t-1,bentonite ton of paper used in an amount of 1~2kg·t-1.Kraft liner dry strength agents in the process,test the polyacrylamide dry strength agents(at short PAM)adding the results,in the original conditions unchanged,gradually increase the amount of PAM added observed between aaper layer physical indicators binding,folding,bursting index and other changes,as well as on the first pass retention,whitewater PCD,conductivity track,observe the effect of wet-end system after adding PAM,to ensure the efficiency of the machine.During the test the amphoteric tapioca starch also replace experimentation dry strength agents dry strength agents to keep a small amount of sdding,changing gender tapioca observed achange in the amount of physical indicators of paper.Ultimately determine the use of PAM used as dry strength agents,tons of paper used in amount of 10~20kg·t-1.In kraft linerboard surface sizing process of HJ-08 alkaline sizing agent and BK-532 is being used,KSK-718 type sizing comparing outcomes and cost savings.During the production of 105g·m-2 Sequoia BK-532 after the test comparison,in the same condition,to achieve the same as under paper quality indicators BK-532 tons of paper used inan amount of 1.1~1.5kg·t-1,HJ-08 tons of paper used in an amount of5.0kg·t-1.During the production of 100g·m-2 T paper after use KSK-718 comparison,in the same conditions,to achieve the same paper quality indications at KSK-718 tons of paper used inan amount of 1.0~1.6kg·t-1,HJ-08 tons of paper used in an amount of2.7kg·t-1.The production line uses a Voith's pulp lines and metso's paper machine line,supporting the DCS and QCS remote control systems,automated control;the Fenton oxidation technology is introduced in papermaking waste water depth treatment and waste water recycling;the company has its own power plant,to achieve the CHP.