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

Journal Article (1998)
Author(s)

Jeroen De Beer (Universiteit Utrecht)

E. Worrell (Universiteit Utrecht)

K. Blok (Universiteit Utrecht)

Affiliation
External organisation
DOI related publication
https://doi.org/10.1016/S0360-5442(97)00065-0
More Info
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Publication Year
1998
Language
English
Affiliation
External organisation
Issue number
1
Volume number
23
Pages (from-to)
21-42

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.

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