INDUSTRIAL DEMONSTRATION PLANT WITH FLUIDIZED BED COMBUSTION OF HIGH SULPHUR AND ASH CONTENT COAL [PHASE 1]

Ziel

Definition, feedstock characterization and engineering of a circulating fluidized bed boiler with a capacity of 35 T/h of superheated steam burning low calorific value coal (3100 kcal/kg) with a high sulphur content (4-6%) and high ash content (35-45%) from Aragon and Cataluna.
This is the first part of the project limited to the definition, feedstock characterisation and engineering of the boiler.
The Demonstration Plant can be divided in the following components and/or main equipment for a better comprehension :
- Boiler
. Furnace
. Cyclone
. Heat Recovery Area (HRA)
- Feeding System (coal and limestone)
- Ash Handling System
- Gas Cleaning System
- Control System
The boiler is of the natural circulation, balanced draft type, for outdoors installation, and comprises basically three parts :
. Furnace
. Cyclone
. HRA
The furnace, the cyclone and the walls of the upper part of HRA, are made of waterwalls, constituted by welded membrane walls.
The furnace is totally enclosed by waterwalls; in its lower part there is the primary air plenum chamber and the grid for proper air distribution is located right under the bed.
The drum is located directly over the furnace, in the upper part of the boiler. Its mission, as in all the natural circulation boilers, is to assure the absence of humidity and a low concentration of salt disolved in the steam to the turbine, as well as to allow the correct circulation of water/steam in the boiler.
The cyclone is an integral part of the boiler, being formed by water cooled walls, with two annular headers at the top and the bottom, being connected directly to the furnace and to the HRA.
The boiler control and safety system assures the safe boiler operation, the purge procedures, lighting off and sequential trip procedures. The analogic control system governs the coal and limestone feed, the waste material removal, the air flow, the furnace pressure and the feed water flow.

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

AGRUPACION DE EMPRESAS SERCOFLUID

EU-Beitrag

Keine Daten

Adresse

PRINCIPE DE VERGARA, 74
28006 Madrid
Spanien

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