Toxic mass flows in a modern coal-fired power plant

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:43236

Larjava, K; Laitinen, T; Tolvanen, M; Aunela, L; Hahkala, M ^[1]

---

1. Technical Research Centre of Finland, Espoo (Finland)

In Finland a large project is going on in which the main objectives are to control all the mass flows in power plants equipped with desulfurization or DENOx plants in respect to harmful emissions components. Another important goal is to develop a uniform sampling and analysis system to be used as a tool in the environmental impact assessment. The project is carried out in cooperation with Technical Research Centre of Finland, IVO international and Helsinki Energy Board. The first case in the project has been a coal-fired power plant in Helsinki equipped Semi-dry desulfurization plant in which a large measurement campaign was carried out in March, 1993. Mass balances of 12 elements were determined. The reproducibility of the determinations was good for all the mass balance elements. A satisfactory closure was obtained for almost all of the components. In the case of Pb and Be the total amount in the outcoming flows seemed to exceed the amount in the incoming flows, while in the case of Hg the amount in the outcoming flows were lower than in the incoming flows. Sample digestion and analysis methods were developed by means of comparison tests using commercial reference samples and real samples. The next case will be the newest coal-fired power plant in Finland equipped with wet desulfurization and DENOx plant. A modern peat-fired power plant with a fluidized-bed boiler will also be studied.

• OSTI ID: 43236
• Report Number(s): CONF-940930--
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
AIR POLLUTION CONTROL
BERYLLIUM
COAL
COMBUSTION
DESULFURIZATION
FINLAND
FLUE GAS
FOSSIL-FUEL POWER PLANTS
LEAD
MASS BALANCE
MERCURY
PEAT
POLLUTANTS
WASTE PROCESSING PLANTS