API Publ 4704 pdf download.Characterization of Fine Particulate Emission Factors and Speciation Profiles from Stationary Petroleum Industry Combustion Sources This report presents results of a pilot project to evaluate the test protocol on a 1 14 million British thermal unit (MMBtu) per hour gas-fired refinery process heater. The process heater has a refractory-lined rectangular box furnace with a single row...