A4 Conference proceedings

Reuse of CO2 in Pulp Mills


Publication Details
Authors: Kuparinen Katja, Vakkilainen Esa, Tynjälä Tero, Cardoso Marcelo
Publication year: 2018
Language: English
Title of parent publication: Pulping Engineering and Environmental Recycling Sustainability Conference (PEERS 2018): Technical Solutions for Today and Beyond
Start page: 28
End page: 31
Number of pages: 4
ISBN: 9781510874695
JUFO-Level of this publication: 0
Permanent website address: http://www.proceedings.com/42139.html
Open Access: Not an Open Access publication

Abstract

The pulp and
paper industry is a globally significant producer of CO2 emissions,
and is facing increasing demand to reduce these emissions. The emissions originate
largely from the combustion of biomass and are therefore carbon-neutral. Fossil
fuels burned in lime kilns are the main source of fossil CO2. CO2
capture and use (CCU) offers pulp mills the possibility to act as a site for
negative CO2 emissions. This study evaluates the possibilities to reuse
CO2 in the kraft pulp mill process and the effects of carbon capture
on the mill operations. The evaluation is made by calculating balances for two
reference mills, a modern Northern softwood mill and a Southern eucalyptus mill.
The potential methods for both carbon capture and use are discussed, and the
effects of their integration into the reference mill processes are analyzed.
There are both novel and well-known processes for carbon capture and reuse. The
technical potential for carbon capture in pulp mills is significant, while the
reuse potential using currently available technologies is lower. CO2
capture processes are energy-intensive, but in modern mills, increased steam
use can often be covered with existing boilers.


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Last updated on 2019-10-10 at 15:21