Chemical-looping combustion with natural gas using spray-dried NiO-based oxygen carriers
Book chapter, 2009

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.

oxygen carrier

chemical-looping combustion

nickel oxide

Author

Carl Johan Linderholm

Chalmers, Energy and Environment

Anders Lyngfelt

Chalmers, Energy and Environment

Corinne Béal

Andres Trikkel

Rein Kuusik

Erik Jerndal

Chalmers, Chemical and Biological Engineering, Environmental Inorganic Chemistry

Tobias Mattisson

Chalmers, Energy and Environment

Advances in CO2 Capture and Storage Technology (2004-2009)

Vol. 3 67-74

Driving Forces

Sustainable development

Subject Categories

Energy Engineering

Areas of Advance

Energy

ISBN

9781872691497

More information

Created

10/7/2017