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Catalytic plasma process to limit combustion emissions affecting the environment

Objective

To investigate principal aspects of flue gas cleaning by pulsed corona energization process. To find design rules to reduce energy consumption and increase removal efficiency up to 70% for NOx and 80% for SO2 for this combined DeNOx/DeSOx method.

The principal tasks can be summarised as follows:

1) In situ investigations of pulsed corona discharge characteristics with a laboratory scale set-up: measurements of total light emission as a function of pulse parameters to determine the discharge mode; fast electrical measurements for calculation of the energy input; Schlieren photography and optical emission measurements to determine the radial and axial distribution of the streamer channels; spectroscopic investigations for the determination of electron energy and radical production.

2) Pulse generator scheme design: review of pulse generator philosophy; review of the state of the art in high power switch technology; detailed design of a pulse generator.

3) Pulse generator construction and testing: construction of a pulse generator; test of its reliability and global efficiency.

4) Review of the standards for radiated electromagnetic interference.

5) Review of the EMC design considerations.

6) Electrode structure: comparison of NOx and SO2 removal efficiency with different electrode structures.

7) Ammonia injection: comparison of the removal efficiency obtained by injecting gaseous ammonia and hydrated ammonia.

8) Size distribution of produced ammonia salts: measurement of the ammonia salts size distribution in the range of 0.01 to 0.5 microns by cyclone and diffusion battery techniques.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

Ente Nazionale per l'Energia Elettrica SpA (ENEL)
Address
Via Andrea Pisano 120
56100 Pisa
Italy

Participants (2)

EINDHOVEN UNIVERSITY OF TECHNOLOGY
Netherlands
Address
Den Dolech 2
5600 MB Eindhoven
United Kingdom Atomic Energy Authority (UKAEA)
United Kingdom
Address
Culham Laboratory
OX14 3DB Abingdon