PLANT FOR DEHYDROGENATION OF PARAFFIN HYDROCARBONS C-C Russian patent published in 1999 - IPC

FIELD: plants for dehydrogenation of paraffin hydrocarbons C₃-C₅ into conforming olefin hydrocarbons. SUBSTANCE: the offered plant includes reactor and regenerator with fluidized bed of finely divided chromo-alumina catalyst, sectionalizing grates and cyclones located in its upper part and provided with dust-discharge stand pipes; pipelines for supply of raw materials; pipelines for circulation of catalyst between reactor and regenerator; pipelines for withdrawal of contact gas and regeneration gases connected with cyclones; heat exchangers for recuperation of heat of contact gas and regeneration gases; devices for dry and wet trapping of entrapped catalyst from contact gas and regeneration gases, and pipelines for return of said catalyst. Ends of dust discharge stand pipes of cyclones and/or ends of pipelines for return of catalyst from devices for dry and/or wet trapping installed on pipelines of contact gas and/or regeneration gases accommodated in reactor and/or regenerator at height equalling 15-85% of height of fluidized bed and below the discharge ends f pipelines for circulation which are installed below the level of catalyst fluidized bed. EFFECT: increased yield of desired product, reduced consumption of catalyst and improved process ecology. 4 cl