chemical pulping

chemical pulping

[′kem·i·kəl ′pəlp·iŋ]
(chemical engineering)
Separation of wood fiber for paper pulp by chemical treatment of wood chips to dissolve the lignin that cements the fibers together.
References in periodicals archive ?
GL&V's washing, oxygen delignification and bleaching operations with Compact Press, pumps and mixers technology for chemical pulping as well as the related Product Center in Karlstad Sweden are not included in the transaction scope.
ANDRADE (2006) proposed that it was fundamental to evaluate the principal chemical components of wood, due to their great influence on the chemical pulping processes, thus altering the final product quality.
Kadant (NYSE:KAI) revealed on Friday the receipt of orders, valued at USD7m, from two paper producers in North America for chemical pulping equipment and a recycled fiber processing line.
The so-called "biotreated wood chips" were further used in mechanical or chemical pulping processes where several benefits of this biological pretreatment have been reported for both softwoods and hardwoods (AKHTAR et al., 1998; MENDONCA et al., 2002, 2004; FERRAZ et al., 2008).
Following the successful completion of the transaction, Metso Paper will be able to deliver all core processes for modern pulp mills, including chemical pulping lines, chemical recovery and power generation for pulp and paper production.
As sodium containing salts are added during the chemical pulping process, several studies that have investigated land application of pulp and paper effluent have focused mainly on soil hydraulic properties, and plant nutrient disorders (NCASI 1985; Howe and Wagner 1996b, 1999; Smith et al.
NORDIC BUSINESS REPORT-31 March 2005-Metso Corporation to supply chemical pulping technology in Brazil(C)1994-2005 M2 COMMUNICATIONS LTD http://www.m2.com
Unlike chemical pulping processes that require chemicals to break wood down into its constituent fibres, mechanical pulping is largely a matter of grinding up the wood into basic components.
The European Commission on 12 July fined Mitsubishi Heavy Industries 950,000 Euro for failing to supply its Merger Task Force with information over a chemical pulping joint venture last year between Kvaerner and Ahlstrom.
ARC's pulp and paper business unit is now able to model all aspects of a fully operational mechanical pulping mill and has the equipment necessary to evaluate both mechanical and chemical pulping processes.
Atchison explained that chemical pulping of the shorter core fiber is thwarted by the fact that "it just won't drain on a paper machine," and the great length of the bast fiber can interfere with its mechanical pulping.

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