The report describes the design and operation of a system to eliminate atmospheric emissions during the pushing of coke from the 45-oven A-battery at Ford Motor Co.'s Rouge Plant in Dearborn, Michigan. The 10-year-old A-battery consists of 45 13-ft high ovens, each producing 12 tons of blast furnace coke at a gross coking time of 18 hours with a 'push' scheduled each 15 minutes. The Coke Guide Fume Hood, where the entire coke guide is enclosed with a hood that extends out over the quench car, was used to eliminate the pushing emissions. Prior to the push, the hood is connected to a stationary fume main that is under a partial vacuum; the hot coke emissions generated during the push are conveyed to a high-energy wet-type gas scrubber where the gas stream is cleaned before being emitted to the atmosphere. Clearances between the hood and quench car are held to a minimum to provide sufficient indraft velocities to overcome normal lateral wind effects.

"EPA-650/ 2-74-076." "September 1974."