Typical Conversion Efficiencies

NOx	CO	HC	Aldehydes (odor causing)	PM10
Nil	70-95%	70-90%	70-90%	10-40%

* Less than 50 ppm sulphur in diesel fuel is required for PM 10 conversion

Reactions

Carbon Monoxide	CO + ½O2 → CO2	(1)
Gas Phase Hydrocarbons	CmHn + (m + n/4) O2 → m CO + n/2 H2O	(2)
Liquid Phase Hydrocarbons (SOF)	CmHn + (m + n/4) O2 → m CO2 + n/2 H2O	(3)
Aldehydes, Ketones, etc.	CmHnO + (m + n/4 – 0.5) O2 → m CO2 + n/2 H2O	(4)

The diesel oxidation catalyst (DOC) is effective for the control of carbon monoxide (CO), hydrocarbons (HC), odor causing compounds and the soluble organic fraction (SOF) of particulate matter (PM10).

Typical Conversion Efficiencies

NOx	CO	NMHC	VOC	CH20	HAPs
Nil	70-99%	40-90%	60-99%	60-99%	60%-99%

 

Reactions

Carbon Monoxide	CO + ½ O2 → CO2	(1)
Hydrocarbons	CmHn + (m + n/4) O2 → m CO2 + n/2 H2O	(2)
Aldehydes, Ketones, etc.	CmHnO + (m + n/4 – 0.5) O2 → m CO2 + n/2 H2O	(3)
Hydrogen	H2 + ½ O2 → H2O	(4)

Typical Conversion Efficiencies

NOx	CO	HC	CH20	HAPs
90-99%	90-99%	50-90%	80-95%	80-95%

 

Reactions

Oxidation reactions with O 2:

CO + ½ O2 → CO2 HC + ½ O2 → CO2 + H2O HC + ½ O2 → CO + H2O H2 + ½ O2 → H2O

Oxidation/reduction reactions with NO:

CO + NO → ½ N2 + CO2 HC + NO → N2+ H2O + CO2 HC + NO → N2 + H2O + CO H2 + NO → ½ N2 + H2O H2 + 2 NO → N2O + H2O 5/2 H2 + NO → NH3 + H2O 2 NO + 2 NH3 + ½ O2 → 2N2 + 3 H2O

Water-gas shift reaction:

CO + H2O → CO2 + H 2

Reforming reactions:

HC + H2O → CO2 + H2 HC + H2O → CO + H2

Typical Conversion Efficiencies

DCL Diesel Particulate Filter Type	Particulate matter measured by particle count*	Particulate matter(PM10) measured by mass**	CO	HC	NOx
MINE-X pDPF® Diesel Particulate Filter	>99%	Up to 60%	95%	85%	NO2/NO ratio may increase

* Requires diesel fuel with sulphur content less than 500ppm
** Works best with sulphur content less than 15ppm (USLD fuel)

DCL's DPFs are highly effective in the elimination of particulate matter (PM10) or soot from diesel exhaust. DCL offers a variety of filter coatings and designs, depending on the engine application and duty cycle. Contact a DCL professional for assistance with choosing the right filter for your application.

Typical Conversion Efficiencies

DCL Filter Type	Particulate matter measured by particle count*	Particulate matter(PM10) measured by mass**	CO	HC	NOx
MINE-X SOOTFILTER®	>99%	> 85%	90%	60-80%	NO2/NO ratio may increase
MINE-X SOOTFILTER® BM	>99%	> 85%	-	-	no change in NO2/NOx ratio

* ultra-fine and fine particles (diameter 10 - 500 nm)
** Requires less than 15 ppm sulfur in fuel for best performance.