Indirect Starch Heating System For Pulp And Paper Industry

Papermaking is a highly sophisticated process involving several processing steps to turn wood logs into paper products. In addition to the actual papermaking process, there are also supporting areas such as waste water treatment, recovery boiler operation, steam production and cooling towers that benefit from online analytical measurements. Although not present all the mils , there are five major steps to papermaking process; mechanical preparation of the wood into wood chips, wood digestionpulping to form pulp, pulp whitening bleaching, pulp stock preparation ,and finally paper formation. The first of these steps uses strictly mechanical processes to form small chips from the logs supplied to the mill.Commercially, starch or starch-containing materials are cooked or hydrated by heating their water suspensions, usually by steam, in either batch-type kettles or continuous cookers. In the latter a stream of starch slurry is continuously mixed with steam so that a steady flow of heate