Patent Us6841712 Process For The Dehydrogenation Of Ethylbenzene To

Patent Us6841712 Process For The Dehydrogenation Of Ethylbenzene To Us6841712b1 us10 070,440 us7044002a us6841712b1 us 6841712 b1 us6841712 b1 us 6841712b1 us 7044002 a us7044002 a us 7044002a us 6841712 b1 us6841712 b1 us 6841712b1 authority us united states prior art keywords process according catalyst ethylbenzene weight oxide prior art date 1999 09 30 legal status (the legal status is an assumption and is. A process for the dehydrogenation of ethylbenzene to styrene comprising passing a reaction mixture of ethylbenzene and steam through a dehydrogenation catalyst, which is located in a tube bundle chamber, wherein a heat transfer medium flows counter currently to the reaction mixture of ethylbenzene and steam, said heat transfer medium heating the reaction mixture indirectly from a temperature.

Patent Us6841712 Process For The Dehydrogenation Of Ethylbenzene To Patent us6841712b1 process for the dehydrogenation of ethylbenzene to styrene (us 6,841,712 b1); owner: snamprogetti s.p.a.; filed: 09 19 2000; est. priority date: 09 30 1999; status: active grant; abstract: a process is described for the dehydrogenation of ethylbenzene to styrene in a fluid bed reactor regenerator system, which uses a catalyst based on iron oxide supported on a modified. Role of potassium. dehydrogenation of ethylbenzene on well defined iron oxide model catalysts. deactivation of k fe catalysts. promoters of k fe catalysts. kinetics. application of membrane reactors. dehydrogenation of ethylbenzene related hydrocarbons. alternative routes for the production of styrene. industrial processes and commercial catalysts. The most common method of production of styrene monomer (sm) is by dehydrogenation of ethylbenzene (eb). one process for production of styrene monomer from eb is by direct dehydrogenation. in this process, excess superheated steam near 800° c. is combined with eb in a low pressure adiabatic reactor containing a potassium promoted iron oxide. 1. a method of dehydrogenating ethylbenzene to styrene and aromatics, said method comprising passing ethylbenzene over dehydrogenation catalyst beds in a plurality of serially arranged dehydro reactors, wherein at least the first of said reactors contains a high selectivity dehydro catalyst, and at least the last of said reactors contains a low selectivity dehydro catalyst.

Dehydrogenation Ethylbenzene Styrene Process Patents Sketch Coloring Page The most common method of production of styrene monomer (sm) is by dehydrogenation of ethylbenzene (eb). one process for production of styrene monomer from eb is by direct dehydrogenation. in this process, excess superheated steam near 800° c. is combined with eb in a low pressure adiabatic reactor containing a potassium promoted iron oxide. 1. a method of dehydrogenating ethylbenzene to styrene and aromatics, said method comprising passing ethylbenzene over dehydrogenation catalyst beds in a plurality of serially arranged dehydro reactors, wherein at least the first of said reactors contains a high selectivity dehydro catalyst, and at least the last of said reactors contains a low selectivity dehydro catalyst. Upon traversing the length of reactor tube 16 across the catalyst contained therein, a substantial dehydrogenation of the ethylbenzene feed is accomplished and the product exiting into outlet header contains substantial styrene, which is then passed through product flow line 15 for further purification and removal of non styrene products such as ethylbenzene, benzene, toluene and hydrogen. 1. a process for the dehydrogenation of ethylbenzene to styrene which comprises: (a) reacting the ethylbenzene mixed with an inert gas in a fluid bed reactor, in the presence of a catalytic system consisting of iron oxide and promoters supported on alumina modified with 0.01 10% by weight of silica and operating at a temperature ranging from 400 to 700° c., at a total pressure of 10.13 to 303.