Benzene Hydrogenation Refinery Process Hacing Identification And Assessment Technology Study

With the rapid development of modern science and technology and chemicalindustry, demands on benzene at every production becomes more and more. Modernadvanced technology for producing benzene is catalytic hydrogenation of benzene, butthis benzene hydrogenation refinery unit is one for hazardous chemical. Reactions areunder high temperatures and pressures. Process parameters are seriously required. Anydeviation may tend to cause fire, explosion, poison or other accidents.Therefore; it is ofgreat practical significance to commit studies on the technology of hazardous sourcingidentification and assessment of the benzene hydrogenation refinery process applyingsystem safety theories and technological methods.This thesis takes system identification as its basis, using system hazard analysismeans, based on system hazard investigation to benzene hydrogenation unit, firstlycombining hazard sourcing identification theory to find out any potential defaultexisting in the system in terms of design, construction and operation. And bypreliminary hazard analysis commit detailed analysis and preliminary qualitative hazardclassification to hazard sourcing. On basis of this, apply hazard classificationassessment method to commit qualitative assessment to the major manufacture plant ofthis set of unit, and determine the key hazardous plant parts that need protected aspreliminary reactors and Litol reactor. Then, the thesis uses the Dow’s Fire&ExplosionIndex Hazard Classification Guide (7th Edition) which has been mature to commit acomplete assessment to every composing section of the benzene hydrogenation unit.Through calculation using the Fire Index, it is more accurate to assess the resultedcoverage of a fire or explosion of the hazardous source and all incurred losses ofproperties, thus making people more clear about the hazard of the unit from the point ofquantity. Afterwards, use HAZOP to commit analysis to the more hazardous LITOLcatalysis reaction system, determine section hazard points and commit analysis to everyanormaly in terms of possible causes, incident effects and controls.Finally, use the two models of TNT and TNO to predict on the hazardous radius ofshock wave formed by the benzene vapor cloud combustion explosion and provide helpfor businesses or government tor first aid relief.