Energy Flows and Carbon Footprint in the Forestry-Pulp and Paper Industry

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http://hdl.handle.net/10138/306249

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Zhao , Q , Ding , S , Wen , Z & Toppinen , A 2019 , ' Energy Flows and Carbon Footprint in the Forestry-Pulp and Paper Industry ' , Forests , vol. 10 , no. 9 , 725 . https://doi.org/10.3390/f10090725

Title: Energy Flows and Carbon Footprint in the Forestry-Pulp and Paper Industry
Author: Zhao, Qingjian; Ding, Sheng; Wen, Zuomin; Toppinen, Anne
Other contributor: University of Helsinki, Department of Forest Sciences



Date: 2019-09
Language: eng
Number of pages: 23
Belongs to series: Forests
ISSN: 1999-4907
DOI: https://doi.org/10.3390/f10090725
URI: http://hdl.handle.net/10138/306249
Abstract: In the context of global climate change, energy conservation and greenhouse effect gases (GHG) reduction are major challenges to mankind. The forestry-pulp and paper industry is a typical high energy consumption and high emission industry. We conducted in-depth research on the energy flows and carbon footprint of the forestry-pulp paper industry. The results show that: (1) The main sources of energy supply include external fossil fuel coal and internal biomass fuel black liquor, which supply 30,057,300 GJ and 14,854,000 GJ respectively; in addition, the energy produced by diesel in material transportation reaches 11,624,256 GJ. (2) The main energy consumption processes include auxiliary engineering projects, material transportation, papermaking, alkali recovery, pulping and other production workshops. The percentages of energy consumption account for 26%, 18%, 15%, 10% and 6%, respectively. (3) The main sources of carbon include coal and forest biomass, reaching 770,000 tons and 1.39 million tons, respectively. (4) Carbon emissions mainly occur in fuel combustion in combined heating and power (CHP) and diesel combustion in material transportation, reaching 6.78 million tons and 790,000 tons of carbon, respectively. (5) Based on steam and electricity consumption, the indirect carbon emissions of various thermal and electric energy production units were calculated, and the key energy consumption process units and hotspot carbon flow paths were further found. This research established a theoretical and methodological basis for energy conservation and emission reduction.
Subject: forestry-pulp and paper industry
production process
energy flow
carbon footprint
flowchart
HARVESTED WOOD PRODUCTS
EMISSIONS
PAPERMAKING
PERSPECTIVE
POTENTIALS
INNOVATION
ECOSYSTEM
DEMAND
4112 Forestry
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