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Use of Nickel Oxide...
Use of Nickel Oxide as a Catalyst for Tar Elimination in a Chemical-Looping Reforming Reactor Operated with Biomass Producer Gas
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- Berguerand, Nicolas, 1978 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Lind, Fredrik, 1978 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Israelsson, Mikael, 1985 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Seemann, Martin, 1975 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Serge, Biollaz (author)
- Paul Scherrer Institut
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- Thunman, Henrik, 1970 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2012-12-14
- 2012
- English.
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In: Industrial & Engineering Chemistry Research. - : American Chemical Society (ACS). - 1520-5045 .- 0888-5885. ; 51:51, s. 16610-16616
- Related links:
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http://dx.doi.org/10...
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https://doi.org/10.1...
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Abstract
Subject headings
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- A secondary tar-cleaning process based on Chemical-Looping Reforming (CLR) was investigated for upgrading biomass producer gas, derived from the Chalmers University of Technology 2-4 MW indirect gasifier. The experiments were conducted in a bench-scale CLR reactor using a manufactured nickel oxide (NiO) catalyst. Although Ni is a well-documented and efficient steam-reforming catalyst, it is susceptible to rapid deactivation under tar-rich conditions. The aim of this study was to explore the advantages of CLR as a gas-cleaning application, a process which offers continuous regeneration of the carbon deposits on catalysts. The tar-reforming performance of this Ni material and its influence on the gas composition and in particular its potential to increase the H2/CO ratio, were studied. The system was tested at reforming temperatures that ranged from 700°C to 880°C and at oxygen concentrations of 1.0% and 2.2% in the inlet feed to regenerator section. The results confirm the strong ability of the catalyst to reform tars. Higher process temperatures clearly promoted tar conversion, with 96% overall conversion at 880°C (99% if benzene is excluded), as compared with 45% conversion at 700°C. The hydrogen production was favored when temperature was raised. Though, a maximum ratio H2/CO of 2.2 was observed at 750°C. Finally, no time-on-stream deactivation of the catalyst in the CLR was observed during the test, which lasted almost 7 hours.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- Tars
- Chemical-Looping Reforming
- Catalytic Gas Cleaning
- Circulating Fluidized Beds
- Biomass Gas Upgrading
- Nickel Oxide Catalyst
Publication and Content Type
- art (subject category)
- ref (subject category)
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