CIRCULATING FLUIDISED BED BOILER FED DIRECTLY WITH SLURRY CONTAINING 33% WATER [PHASES 1 & 2]

Ziel

To burn in a circulating FBC slurry which is presently stored in settling basins. The slurry will be prepared in order that its composition is at an optimal value before feeding to boiler.
The boiler is an 315 MW (TH) unit which will replace an old pulverized coal boiler of 125 MW (E). Feeding of slurry in CFBC does not create difficulties for there is no erosion on the nozzles and there is no particular problem caused by vaporization of water. In additional to slurry preparation and transportation equipment, the CFBC the project covers an auxiliary dedusters - stack - control system.
The present contract covers phase 2 of the project (studies and procurement).
The design studies and procurement stages have been completed.
The slurry recovered will be carried by truck to the power station where it will be taken to a slurry preparation shop to prepare an optimal mixture of coal and water. The slurry will be transferred from the shop to storage basins, from which it will be pumped by variable-flow pumps to feed the boiler directly. In the case of certain basins, an existing coal pipeline may be used for transportation to the power stations, and the slurry will then be prepared at the basin.
The boiler that is to burn the slurry is a CFB boiler with recirculation of solids recovered in the cyclones, either directly in the bed, or through two outside exchangers that allow regulation of the bed temperature in relation to operating rates and also regulation of the superheated steam temperature.
It will replace an obsolete boiler in an existing 125 MWe unit. Additional to the slurry preparation and transportation equipment and the CFB boiler, the project covers auxiliary equipment ( dedusters, stack, control system) which will complete the installation.
The following are the characteristics of the new boiler: Superheated steam 367 t/h at 134 bar and 545 deg. C
Reheated steam 338 t/h at 29,8 bar and 540 deg. C
Thermal power 315 MW th (input)
288 MW th (output)

Programm/Programme

ENG-ENDEMO C - Programme (EEC) of demonstration projects and industrial pilot projects (EEC) in the energy field, 1985-1989

Thema/Themen

8.1 - ATMOSPHERIC FLUIDIZED BED COMBUSTION

Aufforderung zur Vorschlagseinreichung

Data not available

Finanzierungsplan

DEM - Demonstration contracts

Koordinator

Charbonnages de France

EU-Beitrag

Keine Daten

Adresse

65 AVENUE DE COLMAR
92500 RUEIL-MALMAISON
Frankreich

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