Applications
Industrial Waste Gas Treatment
Multi-component industrial exhaust — NOx, CO and VOC — matched to catalysts by composition, temperature and dust.
The three pollutants, three chemistries
Industrial exhaust rarely contains a single pollutant. The treatment stack is assembled from pollutant-specific chemistries, and the selection logic starts from the gas conditions — composition first, then temperature window, then dust:
Pollutant → system
NOx → SCR
Selective catalytic reduction with V-Mo-Ti catalysts, 150–420°C; plate type for high-dust flue gas, honeycomb for tight layouts.
CO → catalytic oxidation
2CO + O₂ → 2CO₂ on precious-metal honeycomb or alumina substrates, 150–600°C — sintering machines, incinerators, furnaces.
VOC → adsorption or oxidation
Low concentration: adsorption; higher concentration and temperature: catalytic oxidation.
Selection questions that matter
- Gas composition — which pollutants, in what concentration, and what poisons (SO₂, dust, alkali metals) travel with them?
- Temperature window — catalyst activity is windowed; the reactor position in the process decides the temperature the catalyst sees.
- Dust loading — high-dust positions call for plate-type SCR with large pitch and open area; low-dust positions allow honeycomb.
- Emission targets — China's ultra-low-emission standards per industry set the removal-efficiency bar.
Where our systems run
- Coal-fired power — SCR DeNOx
- Sintering machines — CO oxidation + DeNOx
- Steel — multi-pollutant flue gas
- Cement — high-dust DeNOx
- Alumina — plate SCR
- Waste incineration — CO + flue gas
- Petrochemical — process vents
- Chemical — VOC streams
Composition first, chemistry follows
Send the gas analysis, temperature and dust loading — we match the catalyst system.