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Program to Improve Health Safety and Environment
Effect of Mercury on Engineering Materials Used in Ammonia Plants
Major Incident Following the Failure of an Ammonia Injector on a Urea Plant
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air preheat ammonia plant ammonia production ammonia storage ammonia synthesis analysis BASF calculated carbon catalyst cause chemical combustion compressor concentration converter detected detectors effect emissions energy equipment feed FLEXSORB flow fracture gas compressor gas turbine Hazard heat exchanger heat treatment heattreatment hydrogen increase industry inlet inspection installed leak leakage liquid located material mechanism MeOH mercury methane methanol natural gas nitrogen nozzle operation outlet pipe preheat pressure primary reformer problems process condensate pump ratio reaction reactor recycle reduced reformer tubes REGATE regenerator removed repair replaced residual stresses result risk rupture safety sample seam secondary reformer sensor shell shown in Figure shows shutdown Sluiskil start-up steam steam reforming steel stress corrosion cracking sulfur surface syngas synthesis gas tank thermal thickness tube failure tubesheet unit Uraca urea valve vapor venting vessel zone