Ozonators were mainly used in mid-sized to large boiling houses and heat factories. Furnace ozonators could potentially remove some pollutants from exhaust, including volatile organic compounds (50% reduction), carbon monoxide (80% reduction), and nitric oxides (90% reduction for NO and 80% reduction for NO2 when using a steam moisturizer). However, furnace ozonators would not remove other pollutants like carbon dioxide, hydrocarbons, or sulphur oxides (except a potential 20% reduction of SO2 with steam).

1. Ozonators where used mainly
in mid range to large boiling
houses and heat factories.
Furnace Ozonator
Is it worth
of effort?

2. Typical minuses of home furnaces:
Air intake is taken from room and moves heat away
Poor Fireplace construction limit max temp < 650 C;
Water heater cannot be disassembled for maintenace
Exhaust releases hot gass to chimney

3. 30 x 30 x 15 cm pack would cost about 350 Eur
together with HV electronics

4. and produce following particles

6. The First root of Evil

7. Furnace ozonator would remove
Pullutant Effect
VOCs - Volatible Organic Compounds YES ~ 50%
Mono carbon oxide CO. YES ~80%
Dioxide carbon CO2. NO
Hydrocarbons CxHy. NO
Sulpher oxide SO2. NO ~20% with steam
moisturizer*
First nitric oxide NO. YES ~90%
Second nitric oxide NO2. YES ~80% with steam
moisturizer*
*Feed in chimney

8. How much ozone we need?

9. Ozone impact on VOC conversion

10. Danish Gass authors where found that
• The reduction of NOx emission is more efficient at lower
temperature (110 °C) than at higher temperature (160 °C), so ~5%
(1/20) of ozone produced must be feed directly to chimney via
second flow regulator;
• O2 is more efficient than air as ozone agent (keep oxigen cilinder).
• The technique is applicable on flue gas from biomass combustion
despite the presence of compounds such as SO2 and HCl .
• Reduction of NOx emissions requires approximately half as much
O3 when it is applied to the natural gas fired engine unit compared
to the straw fired boiler unit.
• The higher O3 consumption on straw fired units is due to both
higher flue gas temperature and larger NOx fluctuations in the flue
gas compared to the gas engine unit.

11. REFERENCES
[1] Using Non-Thermal Plasma to control Air pollutants”,
United States Environmental Protection Agency, EPA-
456/R-05-001, Feb. 2005,
www.epa.gov/ttn/catc/dir1/fnonthrm.pdf.
[2] Jensen T.K., Nihøj, J., Fenger L.D. (2005): Development
of biomass combustion technology. 14th European
Biomass Conference and Exhibition: Biomass for
Energy, Industry and Climate Protection.
[3] Bindslev, H. et al. Emission reduction by means of low
temperature plasma PSO project no. FU3401. Final
report. Risø-l- 2380(EN). 2005.

12. Thank You for attention