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Comparison of pulp-...
Comparison of pulp-mill-integrated hydrogen production from gasified black liquor with stand-alone production from gasified biomass
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- Andersson, Eva Ingeborg Elisabeth, 1956 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Harvey, Simon, 1965 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- Elsevier BV, 2007
- 2007
- English.
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In: Energy. - : Elsevier BV. - 0360-5442 .- 1873-6785. ; 32:4, s. 399-405
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Abstract
Subject headings
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- When gasified black liquor is used for hydrogen production, significant amounts of biomass must be imported. This paper compares two alternative options for producing hydrogen from biomass: (A) pulp-mill-integrated hydrogen production from gasified back liquor; and (B) stand-alone production of hydrogen from gasified biomass. The comparison assumes that the same amount of biomass that is imported in Alternative A is supplied to a stand-alone hydrogen production plant and that the gasified black liquor in Alternative B is used in a black liquor gasification combined cycle (BLGCC) CHP unit. The comparison is based upon equal amounts of black liquor fed to the gasifier, and identical steam and power requirements for the pulp mill. The two systems are compared on the basis of total CO2 emission consequences, based upon different assumptions for the reference energy system that reflect different societal CO2 emissions reduction target levels. Ambitions targets are expected to lead to a more CO2–lean reference energy system, in which case hydrogen production from gasified black liquor (Alternative A) is best from a CO2 emissions’ perspective, whereas with high CO2 emissions associated with electricity production, hydrogen from gasified biomass and electricity from gasified black liquor (Alternative B) is preferable.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
Keyword
- Hydrogen production
- CO2 emissions
- Pulp mill
- Black liquor gasification
Publication and Content Type
- art (subject category)
- ref (subject category)
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