Interactions in emissions control for coal-fired plants, IEACR/47

Author(s): Anna Karin Hjalmarsson

Ref: IEACR/47
ISBN: 92-9029-200-8
Published Date: 01/03/1992
No. of Tables: 26
No. of Figures: 26
No. of Pages: 81


There are interactions between systems for the control of particulate, sulphur and nitrogen oxide emissions from coal-fired plants. These can act positively or negatively on the operation of the plant. Interactions may lead to operational problems in the flue gas treatment plant, an increase in emissions, and even the production of new emissions. The chemical and physical properties of coal and of other substances such as sorbents and additives might interact, as well as the systems controlling different pollutants. The knowledge of interactions is important for the operation of control device and in the choice of a system for a new installation. Negative results of interactions may be avoided and certain advantages may be gained from synergistic effects. This leads to the combination and integration of measures to control emissions. It will be come increasingly important to optimise the whole boiler and plant, not only for energy production, but also for the environmental aspects. One area of special interest is energy efficiency. This includes how much useful energy is produced both as electricity and district heating, and how much energy is required to operate flue gas treatment systems. Another important aspect is the potential for the production of other emissions in the form of solid residues, waste water and new atmospheric pollutants.

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