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Simulation of oxy-f...
Simulation of oxy-fuel combustion in cement clinker manufacturing
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- Hökfors, Bodil, 1971- (author)
- Umeå universitet,Institutionen för tillämpad fysik och elektronik,Cementa AB, Stockholm, Sweden,Thermal energy conversion laboratory
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- Viggh, Erik (author)
- Cementa AB, Malmö, Sweden
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- Eriksson, Matias (author)
- Umeå universitet,Institutionen för tillämpad fysik och elektronik,NorFraKalk, Verdal, Norway
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(creator_code:org_t)
- Thomas Telford : ICE Publishing, 2015
- 2015
- English.
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In: Advances in Cement Research. - Thomas Telford : ICE Publishing. - 0951-7197 .- 1751-7605. ; 27:1, s. 42-49
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- A thermodynamic process model is used as an evaluation tool. Full oxy-fuel combustion is evaluated for circulation of 20–80% of flue gases to the burn zone of a rotary kiln. The full oxy-fuel combustion simulations exhibit altered temperature profiles for the process. With 60% recirculation of flue gases, the temperature in the burn zone is comparable to the reference temperature, and carbon dioxide concentration in the flue gases increases from 33 to 76%. If water is excluded, carbon dioxide concentration is 90%. The partial oxy-fuel combustion method is evaluated for 20 and 40% recirculation of flue gases from one cyclone string to both calciners. Fuel and oxygen feed to the burning zone and calciners are optimised for the partial oxy-fuel scenario. The lowest specific energy consumption is desired while maximising the amount of carbon dioxide theoretically possible to capture. By introducing partial oxy-fuel combustion with 20% recirculation of flue gases in the carbon dioxide string, total carbon dioxide emissions increases by 4%, with 84% possible to capture. Within the limits of the model, the introduction of full oxy-fuel and partial oxyfuel combustion is possible while maintaining product quality. When simulating partial oxy-fuel combustion, the energy consumption will increase even when no power consumption for the production of oxygen is included.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Kemiska processer (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Chemical Process Engineering (hsv//eng)
Keyword
- cement clinker production
- process modell
- oxy-fuel combustion
Publication and Content Type
- ref (subject category)
- art (subject category)
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