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Chemical-looping combustion with natural gas using spray-dried NiO-based oxygen carriers

Carl Linderholm (Institutionen för energi och miljö) ; Anders Lyngfelt (Institutionen för energi och miljö) ; Corinne Béal ; Andres Trikkel ; Rein Kuusik ; Erik Jerndal (Institutionen för kemi- och bioteknik, Oorganisk miljökemi) ; Tobias Mattisson (Institutionen för energi och miljö)
Advances in CO2 Capture and Storage Technology (2004-2009) Vol. 3 (2009), p. 67-74.
[Kapitel]

The work presented in this chapter demonstrates the economical feasibility of making a good oxygen carrier from commercial raw materials using a commercial production method, i.e. spray-drying. A batch fluidized-bed reactor was used for an extensive screening of many NiO-based oxygen carriers. This screening process led to the production of two major particle batches, which were used in continuous chemical-looping experiments. High-temperature experiments in a batch-fluidized bed verified the thermal durability of the particles. The most important result presented here concerns long-term operation (> 1000 h) of a 10-kWth chemical-looping combustor using spray-dried NiO-based oxygen carriers. Conversion of the fuel was good, and increased with (a) decreased circulation, and (b) increased fuel-reactor temperature. Combustion efficiency close to 99% was accomplished using these spray-dried particles. At the end of the test series, the continuous loss of fine material was 0.003%/h, which corresponds to a particle life time of 33000 h. No decrease in reactivity was seen during these long-term tests. The fuel used in the experiments was natural gas and methane.

Nyckelord: chemical-looping combustion, oxygen carrier, nickel oxide


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Denna post skapades 2009-06-15. Senast ändrad 2016-04-28.
CPL Pubid: 95021

 

Institutioner (Chalmers)

Institutionen för energi och miljö (2005-2017)
Institutionen för kemi- och bioteknik, Oorganisk miljökemi (2005-2014)

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Energiteknik

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