Development of a Dry Exhaust Conditioner for Diesel Engines

摘要

The report describes the design fabrication, and testing of a dry exhaust conditioner system. The work was undertaken to adapt European technology on dry exhaust conditioning systems developed for gassy coal mines to large, diesel-powered equipment used in oil shale mining. A large prototype system was developed for a 600 hp engine. The engine and conditioner system were then taken through a simulated certification process at MSHA's Approval and Certification Center in Triadelphia, West Virginia. After the laboratory testing, the engine and dry exhaust conditioner were retrofit into a Caterpillar 773B haul truck for field tests of performance. No inherent features of the system were discovered that would make the dry exhaust conditioner incapable of meeting test requirements. Some deficiencies were found in the prototype design but could be rectified in commercial models. Particulate fouling was the primary problem in operation of the system and caused exhaust gas outlet temperatures to rise above the 400F limit after roughly 47 hours of operation. Particulate fouling also required more frequent cleaning of the flame arresters but the system was capable of operating two shifts without cleaning.