| 1. |
- Berntsson, Thore, 1947, et al.
(författare)
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Towards a Sustainable European Energy System - The Role of the Pulp and Paper Industry
- 2012
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Ingår i: Chemical Engineering Transactions. - 2283-9216. ; 29, s. 1621-1626
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Tidskriftsartikel (refereegranskat)abstract
- In this paper a methodology for analyzing the potential for and effect of implementation of different technology pathways within the pulp and paper industry, developed by the Heat and Power Technology research group at Chalmers University of Technology, is presented. The methodology assumes detailed research and is based on bottom-up thinking. To exemplify its usefulness two studies applying the methodology are summarized. All in all, it can be concluded that the presented methodology enables integration of the different research projects, connecting research on different system levels with each other, which in turn gives the research group the possibility to better answer questions regarding the development and future role of the pulp and paper industry on a higher system level whilst still considering important characteristics of individual technologies and/or mills.
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| 2. |
- Berntsson, Thore, 1947, et al.
(författare)
-
Towards a Sustainable European Energy system – The Role of the Pulp and Paper Industry
- 2010
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Ingår i: Chemical Engineering Transactions. - 2283-9216. - 9788895608051 ; 21, s. 529-534
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Tidskriftsartikel (refereegranskat)abstract
- In this paper a methodology for analyzing the potential for and effect of implementation of different technology pathways within the pulp and paper industry, developed by the Heat and Power Technology research group at Chalmers University of Technology, is presented. The methodology assumes detailed research and is based on bottom-up thinking. To exemplify its usefulness two studies applying the methodology are summarized. All in all, it can be concluded that the presented methodology enables integration of the different research projects, connecting research on different system levels with each other, which in turn gives the research group the possibility to better answer questions regarding the development and future role of the pulp and paper industry on a higher system level whilst still considering important characteristics of individual technologies and/or mills.
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| 3. |
- Jönsson, Johanna, 1981, et al.
(författare)
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Analysing the Potential for CCS within the European Pulp and Paper Industry
- 2010
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Ingår i: Proceedings of 23nd Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS). ; , s. 676-683
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Konferensbidrag (refereegranskat)abstract
- In this paper an approach for analysing the potential for implementation of different technology pathways for the European pulp and paper industry (PPI) is presented. The approach assumes previous, detailed, research and is based on bottom-up thinking whilst still estimating the potential on a European level. The usefulness of the approach is exemplified by applying it to a study of the potential for introduction of carbon capture and storage (CCS) within the European PPI. The results from the case study show that if CCS is to be introduced in large scale within the European PPI, biomass-based emissions must be included when planning for the future CCS infrastructure.
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| 4. |
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| 5. |
- Jönsson, Johanna, 1981, et al.
(författare)
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Analysing the potential for implementation of CCS within the European pulp and paper industry
- 2012
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Ingår i: Energy. - : Elsevier BV. - 0360-5442. ; 44:1, s. 641-648
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Tidskriftsartikel (refereegranskat)abstract
- In this paper an approach for analysing the potential for implementation of different technology pathways for the European pulp and paper industry (PPI) is presented. The approach is based on detailed technical research and aggregates the knowledge from previous studies to incorporate the whole European PPI. Thus, the potential for different technology pathways can be estimated on a European level whilst still considering important characteristics of individual mills. The usefulness of the approach was exemplified by applying it to a case study of the potential for introduction of carbon capture and storage (CCS) within the European PPI. The results from the case study show that for the European PM, CCS has an up-hill road in order to be a viable, large scale alternative for reduction of CO2 emissions. If CCS is to be introduced in large scale within the European PPI, large biomass-based point sources of CO2 emissions need to be included when planning for CCS infrastructure and also the infrastructure needs to be built out for clusters emitting
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| 6. |
- Jönsson, Johanna, 1981, et al.
(författare)
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Comparison of options for debottlenecking the recovery boiler at kraft pulp mills – Economic performance and CO2 emissions.
- 2012
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Ingår i: Proceedings of ECOS 2012 – The 25th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, June 26-29, 2012, Perugia, Italy.
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Konferensbidrag (refereegranskat)abstract
- The trend in the European pulp and paper industry is toward fewer mills with larger capacity. As a result, a number of existing mills will increase their production capacity. For increased production capacity in kraft pulp mills, the recovery boiler is often a bottleneck. This paper compares three different options for debottlenecking the recovery boiler and utilizing a potential mill steam surplus at a typical Scandinavian kraft pulp mill, when increasing the production capacity by 25%: 1) Upgrading the recovery boiler, 2) Lignin extraction and 3) Black liquor gasification (as a booster). For black liquor gasification (BLG) two options for using the product gas are considered: production of electricity or DME motor fuel. Furthermore, both BLG and upgrading of the recovery boiler are assumed to be possible to combine with carbon capture and storage (CCS). The extracted lignin is assumed to either be valued as wood fuel or as oil. The different options are evaluated and compared with respect to annual net profit and global CO2 emissions for four different future energy market scenarios. The results show that, generally, BLG with motor fuels production and lignin extraction with lignin valued as oil achieve the best economic performance. Upgrading the recovery boiler and capture and store CO2 from the boiler flue gases gives the highest CO2 emissions reduction but is only an economically attractive option in scenarios with a high CO2 emissions charge.
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| 7. |
- Jönsson, Johanna, 1981, et al.
(författare)
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Comparison of options for utilization of a potential steam surplus at kraft pulp mills - Economic performance and CO2 emissions
- 2013
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Ingår i: International Journal of Energy Research. - : Hindawi Limited. - 1099-114X .- 0363-907X. ; 37:9, s. 1017-1035
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Tidskriftsartikel (refereegranskat)abstract
- This paper compares different energy-related investment options that can be implemented in a kraft pulp mill with a potential steam surplus. The options investigated include lignin extraction, electricity production, capturing of CO2 and black liquor gasification with production of electricity or biofuels, here DME. The investment options are compared with respect to annual net profit and global CO2 emissions for different future energy market scenarios. A further analysis of how different parameters such as policy instruments and investment costs affect the different technologies also is included. The results show that, generally, for reasonable levels of biofuel support, the best economic performance among the studied technologies is achieved by extraction of lignin valued as oil. However, if the level of support for biofuels is high, black liquor gasification with DME production generally has the best economic performance among the studied options. All the investment options investigated decrease global CO2 emissions significantly. Capturing and storing CO2 from the recovery boiler flue gases result in the highest CO2 emissions reduction and also is an economically attractive option in scenarios with a high CO2 emissions charge.
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| 8. |
- Jönsson, Johanna, 1981, et al.
(författare)
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Excess Heat from Kraft Pulp Mills: Trade-offs between Internal and External Use in the Case of Sweden - Part 2: Results for Future Energy Market Scenarios
- 2008
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Ingår i: Energy Policy. - : Elsevier BV. - 0301-4215. ; 36:11, s. 4186-4197
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Tidskriftsartikel (refereegranskat)abstract
- In this paper the trade-off between internal and external use of excess heat from a kraft pulp mill is investigated for four different future energy market scenarios. The work follows the methodology described in Svensson et al. [2008. Excess heat from kraft pulp mills: trade-offs between internal and external use in the case of Sweden—Part 1: methodology. Energy Policy, submitted for publication], where a systematic approach is proposed for investigating the potential for profitable excess heat cooperation. The trade-off is analyzed by economic optimization of an energy system model consisting of a pulp mill and an energy company (ECO). In the model, investments can be made, which increase the system's energy efficiency by utilization of the mill's excess heat, as well as investments that increase the electricity production. The results show that the trade-off depends on energy market prices, the district heating demand and the type of existing heat production. From an economic point of view, external use of the excess heat is preferred for all investigated energy market scenarios if the mill is studied together with an ECO with a small heat load. For the cases with medium or large district heating loads, the optimal use of excess heat varies with the energy market price scenarios. However, from a CO2 emissions perspective, external use is preferred, giving the largest reduction of global emissions in most cases.
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| 9. |
- Jönsson, Johanna, 1981, et al.
(författare)
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Increased thermal efficiency in Scandinavian integrated TMP and paper mills – analysing the potential for steam savings using the heat load model for pulp and paper
- 2010
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Ingår i: Chemical Engineering Transactions. - 2283-9216. - 9788895608051 ; 21, s. 535-540
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Tidskriftsartikel (refereegranskat)abstract
- In this paper the potential for steam savings and excess heat levels is analysed for four Scandinavian TMP mills using the Heat Load Model for Pulp and Paper (HLMPP). The results are compared with similar results from previous studies for two other TMP mills. Further, an analysis is made regarding the linkage between the steam consumption and temperature level of excess heat and mill specific characteristics such as e.g. production rate and fresh warm water usage. Based on the results and the analysis the potential for implementation of different biorefinery concepts is discussed. The results indicate that steam savings of 2-20 % can be found in Scandinavian TMP mills. The pinch temperature is rather low, around 0-70 °C for most of the studied TMP mills, compared to the pinch temperature usually found at kraft pulp mills (100-140 °C) and thus the potential utilization options for the excess heat is rather limited. The results also show that the level of heated fresh water is affecting both the steam consumption and the pinch temperature and thus also the potential for efficient integration of different biorefinery processes.
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