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Energies 2015, 8(11), 12795-12809; doi:10.3390/en81112343

Economic Evaluation on Bio-Synthetic Natural Gas Production Integrated in a Thermomechanical Pulp Mill

FSCN—Fibre Science and Communication Network, Mid Sweden University, Sundsvall SE-85170, Sweden
Author to whom correspondence should be addressed.
Academic Editor: Robert Lundmark
Received: 13 August 2015 / Revised: 30 October 2015 / Accepted: 2 November 2015 / Published: 12 November 2015
(This article belongs to the Special Issue Economics of Bioenergy 2015)
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In this study, biorefinery as a concept is applied to thermomechanical pulp (TMP)-based paper production to evaluate the possibility of co-production of synthetic natural gas (SNG), electricity and district heating in addition to mechanical pulp and paper. The combined heat and power plant (CHP) associated to TMP is replaced by a biomass-to-SNG (BtSNG) plant. Implementing BtSNG in a mechanical pulp production line might improve the profitability of a TMP mill and also help to commercialize the BtSNG technology by taking into account of some key issues such as biomass availability, heat utilization, etc. A TMP + BtSNG mathematical model is developed with ASPEN Plus. The model prediction shows that the scale of the TMP + BtSNG mill and SNG price are two strong factors for the implementation of BtSNG in a TMP mill. A BtSNG plant associated to a TMP mill should be built at a scale above 100 MW of biomass thermal input. For the case of Swedish economic condition, commercialization of SNG production as a transport biofuel has not matured yet. Political instruments to support commercialization of transport biofuel are necessary. View Full-Text
Keywords: biomass; gasification; synthetic natural gas (SNG); thermomechanical pulp (TMP); electricity biomass; gasification; synthetic natural gas (SNG); thermomechanical pulp (TMP); electricity

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhang, W.; He, J.; Engstrand, P.; Björkqvist , O. Economic Evaluation on Bio-Synthetic Natural Gas Production Integrated in a Thermomechanical Pulp Mill. Energies 2015, 8, 12795-12809.

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