ADVANCES IN THE STATE-OF-THE-ART FOR PRODUCTION OF PULP AND PAPER FROM NON-WOOD PLANT FIBERS
President JOSEPH E.ATCHISON CONSULTANTS INC.2-EAST AVENUE,SUITE 212 LARCHMONT, NEW YORK 10538 Dr.
摘要：<正>The worldwide increase in capacity for production of non-wood plant fiber pulps has increased dramatically since 1970, going from 6.7 percent of total world papermaking pulp capacity in 1970 to 8.1 percent in 1935. It is projected that this percentage will increase to 9.1 percent by 1990. The average annual increase in non-wood plant fiber pulp capacity is now more than double the average annual increase in wood-pulp capacity, being 4.7 percent versus 2.0 percent for wood pulps. Straw, bagasse and bamboo are the leading fibers being used from a quantity standpoint, but many other non wood plant fibers are being used for specialty pulps. （?）ulp production in many countries is based 100% on non wood fibers, and some 25 countires depend on non-wood plant fibers for more than 50% of pulp production, with China and India being the leaders. The modern technology for production of pulp from non-wood plant fibers, has been developed primarily in the U.S. , based on extensive research programs on bagasse pulping which were started in the 1950’s and have continued both in the U.S. and in other major sugar cane growing countries up to the present times. This new technology includes excellent methods of both moist and wet depithing, wet bulk methods of storage, the rapid continuous horizontal tube digester with screw feeder , mechanical pulping of bagasse as well as chemical pulping and the use of bagasse in all grades of paper and paperboard from tissue to newsprint and linerboard. It is now safe to say that the State-Of-The-Art for pulping bagasse is fully equivalent to that for wood pulping. This advanced technology developed for bagasse has also been applied to straw, bamboo, and esparto grass and will undoubtedly be applied to the other non-wood plant fibers in the future. In addition, for straw, advanced methods of collecting, baling and storing this bulky rawmaterial.have been particularly impressive toward improving the economics of straw utilization. The application to whole stalk kenaf, of mechanical and chemi-mechanical pulping methods,developed for bagasse, for production of newsprint also shows great promise.