Autori: Constantin, Carmencita;Dobrin, M; Ionel, Ioana; Padurean, Ioan; Popescu Francisc

Editorial: Editura Stiintifica FRM, Metalurgia International, 14 (9), p.14 - 20, 2009.

Rezumat:

The integration of Romania in the European Union implies the reduction of the pollutant substance emissions, exhausted into atmosphere through the existent Power Plant stacks. The
Governmental Decision no. 541/2003 and Directive 2000/80/EC establish the measures needed to limit the emissions of certain pollutants (sulphur dioxide, nitrogen oxides and dust) from burning of
fossil fuels in large combustion plants. To reduce the SO2 emission, it is required to install a desulphurization system in existing power plants. For the units with more than 300 MWe and operation
on base loan, the technical and economic results recommended to use the wet methods of desulphurization, with limestone. The wet FGD installation was adapted to the real condition of the existing
units in Romania, where because the space behind the boilers and stack is limited, it will be mounted on the first coal pile. Also, the clean flue gases will be exhausted trough a new stack placed up
to the absorber. Because, now there is no desulphurization gypsum market in Romania, it Will be mixed with ash and transported to be deposited to the existing ash pond Some of the power plants
have decided to have a dehydration system from the beginning, others will construct it after having found buyers for gypsum. The investment and operational costs of the FGD system will increase
the energy price, but the emission values of SO2 will be under the limits of the environmental legislation, This wet FGD will be constructed at SC CE Turceni SA, SC CE Rovinari SA, SC CE
Craiova SA, SC Termoelectrica SA and RAAN

Cuvinte cheie: Sulphur dioxide; wet desulphurization; limestone; flue gases; stack; dehydration; gypsum