Long-term energy-efficiency improvements in the paper and board industry

Jeroen De Beer, Ernst Worrell, Kornelis Blok

Research output: Contribution to journalArticleScientificpeer-review

47 Citations (Scopus)

Abstract

A method for identifying and characterizing technologies that can improve the energy efficiency in the long term is described and applied to the paper and board industry. Current papermaking processes require 3-9 GJ heat per tonne of paper, mainly for the removal of water that is added initially to the fibers, and 1.3-2.9 GJ electricity/tonne. The selection of technologies is based on the results of an energy analysis of a paper mill. Seven relevant technologies are described. It is concluded that in the future paper-mill a combination of new pressing and drying techniques, latent heat recovery systems, and a number of minor improvements can reduce the specific heat demand by 75-90% compared to the current average. The specific electricity consumption will remain about equal or will increase slightly. Investment costs will be lower than for conventional paper-making processes. Benefits other than energy-efficiency improvement, e.g., an improved paper quality or a higher production rate, are the driving forces for the development of the technologies.

Original languageEnglish
Pages (from-to)21-42
Number of pages22
JournalEnergy
Volume23
Issue number1
DOIs
Publication statusPublished - 1 Jan 1998
Externally publishedYes

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