Optimizing Renovation Of Ethylbenzene Dehydrogenation Unit

Material styrene is producted by ethylic benzene high temperature, diluted steam catalyze, which products polystyrene colophony, ABS colophony, synthetic rubber and so on.Along with domestic the development of aoto industy, tectonic material, home electrice, the demand of polystyrene colophony, ABS colophony is increase, because the lower production is salable, the development of styrene proction isvery fast.Backward position demand is add up, these years the provide gap is still exist. But follw the plant put into production and start working, styerene import is in evidencedecline. Spend on statistic,2004, China apparent demand reach384,110,000ton, importion288,900,000ton, China can only product96,070,000ton, self-support rateis25%. But from2005to2011, the production of styrene is rise, China apparent demand reach795,980,000ton, importion360770000ton, provide reach442,320,000ton, self-support rate is55.89%, so, there is enough interspace year proction of styerene in China.Daqing petrifaction company60kta styrenen plant which use Fina/Badger technology, after alteration to extend ability, use Lummus/UOP Smart technology, oxidation reheat technology, add s reactor Smart reactor, to produce90kta styrenen.Immited destiny oxygen, under oxidation catalysis, which reaction with hydrogen gas from the front of two reactor, relaxe enough heat, for ethylbenzene dehydrogenation from Smart reactor.by the effection of Smart technology and design conformation, under high temperature a part of oxygn take place oxidation react with hydrocarbon, says "burn hydrocarbon", produce CO2and H2O.because of high content of CO2in lower temperature flow, which sumit acidity can bring erod to equipment.By discuss and optimize study on technology of ethylbenzene dehydrogenation equipment, relieve the erod of technology to equipment,optimize production, the meaning will be very impotent to insure the plant safe and high efficient.