Zeg Power As

Institutt for Energiteknikk

Julien Meyer

Arne Raaheim

Nicola Di Giulio

Björg Andresen

Öystein Ulleberg

Johann Mastin

Oystein Ulleberg

Nicola Di Guilio

Johan Mastin

Bjorg Andresen

Method and power plant comprising a Solid Oxide Fuel Cell (SOFC) for production of electrical energy and Hgas. The power plant is charged with a feed gas selected from the group consisting of natural gas, bio-gas and syngas. The feed gas, prior to being fed to the SOFC, is reformed in a reformer with a CaO containing COabsorber, thereby producing a carbon free Hgas as feed for the SOFC while converting CaO to CaCO. The latter is regenerated to CaO in an endothermic reaction in a CaO regenerator at a temperature of at least 850&#xb0; C. utilizing heat from the SOFC to heat the regenerator. A heat exchange medium collects heat in the SOFC and is subjected to further temperature increase in a heating device before being subjected to heat exchange in the CaO regenerator.

Method and power plant comprising a solid oxide fuel cell (SOFC) for production of electrical energy and Hgas

Method and device for biogas upgrading and hydrogen production from anaerobic fermentation of biological material under production of energy rich gases selected among methane and hydrogen or a combination thereof. The method comprises addition of hydrogen gas to a fermentation step to enhance the methane: COratio in the raw biogas produced. At least part of the raw biogas is subjected to a step of sorption enhanced reforming without prior separation of CO, using CaO as an absorbent to capture COfrom the raw biogas as well as COreleased in the reforming reaction. CaO is regenerated in an endothermic reaction using heat at least partially provided, directly or indirectly, by the bio-gas to be upgraded, thereby producing substantially pure hydrogen and substantially pure CO.

Method and device for upgrading of biogas and hydrogen production from anaerobic fermentation of biological material

A particulate, heterogeneous solid COabsorbent composition, comprising decomposition products of CaAlOafter having been heated to a temperature between 500&#xb0; C. and 925&#xb0; C. in the presence of HO and COfor a period of time sufficient to allow the CaAlOto react and form the particulate, heterogeneous absorbent composition which exhibits a higher concentration of aluminum than calcium in the particle core but a higher concentration of calcium than aluminum at the particle surface. The invention also comprises a method for preparing the particulate, heterogeneous product as well as a method for utilizing the composition for separating COfrom a process gas.

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Oslo, Norway

Julien Meyer