The pipeline that supports the natural gas industry was originally installed with the intent to bring the available gas to the consumer over long distances. Compression from a mechanical source was required and that source quickly became a natural gas fired reciprocating engine with integral design where the compressors were mounted directly to the crankshaft. Little thought had gone into the emissions that were being emitted from the units because the main concern had been reliable compression capable of operating over many years.
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Existing and pending clean air regulations, and the associated costs of meeting them, are
forcing many operators of I/C engines in gas compression and transmission applications
to seek innovative ways to reduce emissions to compliance levels. This paper illustrates
the Warren Petroleum Company's recent successful efforts to reduce NOx emissions
levels of five Clark BA-6 natural gas engines to meet the Texas Natural Resource
Conservation Commission (TNRCC) permit requirements.
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The first commercial installation of Hight Pressure Fuel Injection (HPFi™) for Large Bore Two-Stroke engine has been completed, offering itself as a case study to aid the direction of future emission compliance and O & M based strategy.
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Since the original installation in 1993, Natural Gas Pipeline (NGPL) has been experiencing excessive downtime on a Waukesha 12V-AT25GL natural gas engine located at their Station 206 Storage Facility, St. Elmo, IL. This was found to be a result of chronic reliability issues with the OEM turbocharger and air-fuel ratio controls. During NGPL's 2005 storage injection season, the engine operated no more than 100 hours at any one stretch of time without a shutdown.
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