Fiber Resources for the Pulp Paper Industry in the 21st Century

摘要

In the later 50 years of 20st century, the production of the paper and board from 43 million tons in 1950 raised to 301 million tons in 1998. The average increasing rate was 4.24% per one year in 48 years. The production in one year was average increased 3.14 million tons in first 10 years but 7.8 million tons in last 10 years. However, the increasing rate of one year in first 10 years was 6.27% and in last 10 years was reduced to 3.36%. The ratio of the pulp versus paper and board from 89.74% reduced to 56.31%. This trend will be continued in the 21 st century if no special change. The production of the paper and board will be increased to 410 million tons in 2010, 620 million tons in 2030, and 1680 million tons in 2100. In last 10 years of 21 century, the average production per one year will be increased 19 million tons but the increasing rate of one year will be reduced to 1.33%. The virginal pulp would be produced 490 million tons in 2100. In last 10 years of 21st century, the average production per one year will be increased 4 million tons and the increasing rate of one year will be reduced to 0.95%. The production ratio of the virginal pulp versus paper and board will be reduced to 28.99%. The difference between the production in virginal pulp and paper and board will be mainly balanced by secondary fiber. The 90% of virginal pulp produced from wood will be still not changed considerably, but the wood species and their supply area would be obviously changed. However, the nonwood plant will be taken more attentions. The reason besides that, the large part of nonwood plant is the residues of the agriculture and more easily to renew, the following facts also inspire confidence in papermakers: 1. Mixing the nonwood fiber in the wood and/or secondary fiber, the quality of the end product will be improved. 2. Some difficult problems with the nonwood fiber will be solved because many new technologies of the advance papermaking were developed. For example: reducing the viscosity, super concentrating and gasifying the black liquor; using shoe press and no drawing for the paper web etc. 3. New technologies in nonwood pulping and papermaking were developed.