Air quality regulations are becoming more stringent, forcing owners of stationary engines to develop innovative solutions to meet current and upcoming requirements. Cameron has developed the AJAX oxidizing catalytic converter and an exhaust expansion chamber to meet and exceed these requirements.
Emissions Improvements with the AJAX Oxidizing Catalytic Converter
Cameron’s AJAX oxidizing catalytic converter is capable of removing more than the required carbon monoxide, formaldehyde and VOC levels without frequent cleaning of the catalyst elements for 2SLB engines, previously achieved only with four-stroke stationary engines. During the entire testing period (over four years on two of the converters), the converters removed more emissions than Cameron’s guaranteed reduction levels. The new catalytic converter is available for all new AJAX compressor packages and is also available for retrofit applications.
Cameron standardised the catalyst element for the entire line of AJAX engines. This was done by sizing the common catalyst element based on one-half of the exhaust flow for the two cylinder engine. The result was one catalyst element per power cylinder for all of the engines involved. The catalyst elements are designed like desk drawers, which slide into the catalyst rack.
Click here for an AJAX Oxidizing Catalytic Converter brochure.
NOX Improvements with the AJAX Exhaust Expansion Chamber
The exhaust expansion chamber was developed for the AJAX engine to speed up the process of removing the residual gases from the cylinder and to avoid the loss of fresh air from the cylinder into the exhaust after the residual gases are scavenged. The result is a large increase in the mass of air trapped in the power cylinder, which further reduces the NOx level in the exhaust. The expansion chamber can be supplied as original equipment on AJAX packages or can be retrofitted to existing AJAX installations.
The expansion chamber features diverging and converging sections of pipe using exhaust pulsations to optimize the scavenging of the power cylinders while providing a substantial increase in fresh air trapped in the cylinder. The results are improved performance and cooler combustion, which reduce the NOx levels. This process is accomplished strictly by the shapes and lengths of the various sections of the exhaust system. This emissions control technique is built into the design of the exhaust system, and it adds no moving parts or maintenance requirements to the package.
When the catalytic converter is combined with Cameron’s expansion chamber, results are even better than required by the 2011 NSPS standards. The amount of emissions reduction is acceptable for nearly all gas plant sites and the duration between cleaning and/or replacement of the catalyst elements will be acceptable to nearly all engine users.
The expansion chamber reduces NOx emissions.
Click here for an AJAX Exhaust Expansion Chamber brochure.