Abb Carbon Ab

John Weatherby

Mats Andersson

Roine Br&auml;nnstr&ouml;m

Christopher Adams

Jim Anderson

Christer Gerward

Marie Andersson

A method of combustion and a combustion plant in which absorbent is regenerated is described herein. During the combustion of a fuel in a combustion chamber enclosing a fluidized bed, a fuel and an absorbent are supplied to the fluidized bed. The combustion gases generated during the combustion are collected and purified in a separating member by separation of solid material from the combustion gases. The separated solid material is recirculated to the fluidized bed through a channel, and a gaseous medium is supplied in a controlled manner to the separated solid material present in the channel in order to displace the combustion gases and provide a chemical reaction.

Method of combustion and a combustion plant in which absorbent is regenerated

A method of combustion in a pressurized, fluidized bed and in the freeboard thereof. The combustion method is further characterized by the recirculation of solid sulfur absorbing materials. A gas channel, designed so as to prevent fluidizing gas from entering the channel from below, is provided such that it opens to the freeboard and to a separating member which separates particulate matter from the combustion gasses.

Method and apparatus for burning fuel in the free board of a pressurized fluidized bed with solids recirculation

A method for maintaining a nominal working temperature of flue gases during operation of a PFBC power plant having a pressure vessel with a combustor enclosed therein for combustion of a fuel in a fluidized bed, a gas turbine for receiving flue gases formed during the combustion in the combustor, a compressor driven by the gas turbine for compression of air which is utilized as combustion air during the combustion in the combustor, and a steam turbine driven by steam generated in tube bundles in the bed, includes the steps of burning a complementary fuel in the flue gases generated during the combustion in the fluidized bed downstream of the tube bundle for increasing the flue gas temperature to a nominal level for the process and using oxygen residues in the flue gas as oxidizing agents during combustion of the complementary fuel.

Method of maintaining a nominal working temperature of flue gases in a

Method and a device in a PFBC power plant

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Knutsford, United Kingdom

John Weatherby