General Electric Technology Gmbh

Alstom Technology Limited

Erik W Böös

Olaf Stallmann

Wuyin Wang

Lars Nilsson

Stefan Oscar Hugo Åhman

Stefan Oscar Hugo ÅHman

The combustion system includes a boiler and a flue gas treatment system downstream of the boiler. The flue gas treatment system includes a desulphurization unit, a carbonator and a calciner defining a carbonator/calciner loop. The flue gas from the desulphurization unit is fed into the carbonator. No air pre-heaters, for pre-heating combustion oxidizer to be supplied into the boiler using heat of flue gas, are provided at the boiler and between the boiler and the carbonator.

Combustion system and combustion method

The combustion and flue gas treatment system includes a furnace for combusting a fuel with an oxidizer generating a flue gas, ducting for the flue gas connected to a NOremoval unit and a SOremoval unit, and a recirculation line for recirculating a part of the flue gas back to the furnace. The SOremoval unit is located upstream of the NOremoval unit with reference to the flue gas flow. The recirculation line is connected to the ducting downstream the SOremoval unit.

[object Object]

A system for reducing NOin a flue gas stream, including an absorption element, a first inlet in fluid communication with the chamber configured to deliver a pressurized flue gas to the chamber, and a second inlet in fluid communication with the chamber configured to deliver an absorbing additive to the chamber. An outlet is in fluid communication with the chamber to exhaust from the chamber flue gas that has contacted the absorbing additive. A method for reducing NOin a flue gas including the steps of: providing a flue gas in a chamber of an absorption element, providing an absorbing additive so that it contacts at least a portion of the flue gas, and exhausting at least a portion of the flue gas from the chamber.

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Vederslöv, Sweden

Erik W Böös