A Study to Evaluate Carbon Monoxide and Hydrogen Sulfide Continuous Emission Monitors at an Oil Refinery

摘要

An eleven month field evaluation was done on five hydrogen sulfide and four carbon monoxide monitors located at an oil refinery. The hydrogen sulfide monitors sampled a fuel gas feed line and the carbon monoxide monitors sampled the emissions from a fluid cat cracker (FCC). Two of the four carbon monoxide monitors operated over the eleven month period and showed good agreement with the leuco crystal violet (LCV) wet chemical method developed for the purpose of checking monitor accuracy. The LCV method and the special stack gas conditioning system employed to remove moisture and particulate from the FCC stack gas are also described. The gas conditioning system operated for 14 months without a major failure. None of the five hydrogen sulfide monitors was found acceptable. Two of the five never obtained a valid sample and the other three did not agree well with the EPA Reference Method 11 during relative accuracy testing.