B3 Unrefereed conference proceedings

Pulp Mill as BioCCU


Publication Details
Authors: Kuparinen Katja, Vakkilainen Esa, Tynjälä Tero
Publication year: 2018
Language: English
Title of parent publication: International Conference on Negative CO2 Emissions
JUFO-Level of this publication: 0
Open Access: Not an Open Access publication

Abstract

Corporate image, European emission trading system, and environmental regulations, encourage pulp industry to reduce CO2 emissions. Pulp mills produce CO2 mainly in combustion processes; the largest sources are the recovery boiler, the biomass boiler, and the lime kiln. Due to utilizing mostly biomass-based fuels, the CO2 is largely biogenic. Capture and on-site utilization of CO2 could offer pulp and paper industry the possibility to act as site for negative CO2 emissions, especially when captured biogenic CO2 is used as a raw material for bioproducts. Possibilities for CO2 utilization include tall oil manufacturing, lignin extraction, and production of precipitated calcium carbonate (PCC), depending on local conditions and mill-specific details. In this study, the potential to implement BioCCU in pulp mills was estimated by analyzing the impacts of the processes on the operation of two modern reference mills, a Nordic kraft pulp mill with integrated paper production and a Southern eucalyptus pulp mill. CO2 capture is energy-intensive, and thus the effects on the energy balances of the mills were estimated. When papermaking is integrated in the pulp mill operations, energy adequacy can be a limiting factor for carbon capture implementation. Global CCU potential was estimated based on pulp production data. Pulp mills have notable CO2 capture potential, while the on-site utilization potential using currently available technologies is lower. The future of these processes depends on both technology development, desire to reuse CO2 and prospective changes in legislation.


Last updated on 2019-24-01 at 14:23