System analysis of hydrogen production from gasified black liquor
Paper in proceedings, 2004

Hydrogen produced from renewable biofuel is both clean and CO2 neutral. This paper evaluates energy and global CO2 emissions consequences of integration of hydrogen production from gasified black liquor in a chemical pulp mill. A model of hydrogen production from gasified black liquor was developed and integration possibilities with the pulp mill’s energy system were evaluated in order to maximize energy recovery. The potential hydrogen production is 59 000 tonnes per year if integrated with the KAM reference market pulp mill producing 630 000 Air dried tonnes (ADt) pulp/year. Changes of global CO2 emissions associated with modified mill electric power balance, biofuel import and end usage of the produced hydrogen are presented and compared with other uses of gasified black liquor such as electricity production and methanol production. Hydrogen production will result in the greatest reduction of global CO2 emissions and could reduce the Swedish CO2 emissions by 10 % if implemented in all chemical market pulp mills. The associated increases of biofuel and electric power consumption are 5 % and 1.7 %, respectively.

gasification

black liquor

hydrogen

fuel

global CO2 emissions

pulp mill

Author

Eva Ingeborg Elisabeth Andersson

Chalmers, Department of Chemical Engineering and Environmental Sciences, Heat and Power Technology

Simon Harvey

Chalmers, Department of Chemical Engineering and Environmental Sciences, Heat and Power Technology

Proceedings of the 17th International Conference on Efficiency, Cost,Optimization, Simulation and Environmental Impact of Energy and Process Systems, ECOS 2004, Guanajuato, Mexico July 7-9, 2004 , Edited. by R. Rivero et al.

pp 1435-1445

Subject Categories

Chemical Sciences

ISBN

968-489-027-3

More information

Created

10/8/2017