Exhaust-gas recirculation for retrofit NOx control on natural gas engines. Topical report, January-April 1988

Technical Report · Sun Jan 01 04:00:00 EST 1989

OSTI ID:6164687

Urban, C M

Data on exhaust-gas recirculation obtained from Tenneco Gas Transportation Company were reviewed and analyzed, and a basic EGR system design and cost estimate were developed. EGR can provide practical NOx reductions of up to 50% in 2-cycle natural gas engines. The amount of NO reduction achievable is dependent on the initial baseline NOx emissions of the engine. On the basis of NOx reduction per unit of costs, EGR was found to be more cost effective than selective catalytic reduction. EGR is considered to provide a practical retrofit NOx control method in applications where the level of NOx control achievable with EGR meet regulatory requirements. One specific application is emissions offset to enable installation of additional engine horsepower. Also, EGR could become the primary NOx control method for any regulation in which costs are a major consideration.

• Research Organization: Southwest Research Inst., San Antonio, TX (USA)
• OSTI ID: 6164687
• Report Number(s): PB-89-159990/XAB; SWRI-03-1781-307
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
034000 -- Natural Gas-- Combustion
33 ADVANCED PROPULSION SYSTEMS
330701* -- Emission Control-- Nitrogen Oxides
330800 -- Emission Control-- Alternative Fuels
AIR POLLUTION CONTROL
CHALCOGENIDES
COMBUSTION PRODUCTS
CONTROL
DOCUMENT TYPES
ENERGY SOURCES
ENGINES
EQUIPMENT
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
NATURAL GAS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
PROGRESS REPORT