摘要:
The present disclosure provides a process for the preparation of butadiene from a mixed C4 feed stream comprising n-butane and n-butenes. The process involves separation of n-butane from the mixed C4 stream followed by oxidative dehydrogenation process. The water and fluid mediums are separated from the product C4 stream followed by separation of butadiene. The process of the present disclosure is cost effective, energy efficient, and provides high yield of butadiene.
摘要:
The present disclosure provides a process for preparing a conjugated diene from a C4. feed; said process comprising contacting said C4 feed with at least one catalyst selected from the group consisting of oxides of Gr. IIB metals and Gr. VIII metals under a set of pre-determined dehydrogenating conditions followed by passing at least one oxygenate selected from the group consisting of steam, carbon dioxide (CO2), oxygen, carbon monoxide through the C4 feed to obtain the conjugated diene.
摘要:
This invention relates to a method of producing an aromatic hydrocarbon compound from byproducts of aromatic carboxylic acid and/or aromatic carboxylic acid alkylester preparation processes using hydroprocessing under conditions of high temperature and high hydrogen pressure in the presence of a catalyst, and to a hydroprocessing catalyst used therein.
摘要:
The present invention provides a process for preparing ethylene and propylene, comprising the step of: a) contacting a feed comprising methanol, ethanol and C4+ olefins with a catalyst, comprising ZSM-5 having a silica to alumina ratio in the range of from 40 to 100, at a temperature in the range of from 350 to 1000°C to obtain a olefinic product comprising ethylene and propylene.
摘要:
In a process for producing phenol and cyclohexanone a feed comprising cyclohexylbenzene hydroperoxide and water in an amount from 1 to 15,000 ppm, based upon total weight of feed, is contacted with a cleavage catalyst comprising an aluminosilicate of the FAU type under cleavage conditions effective to convert at least a portion of the cyclohexylbenzene hydroperoxide into phenol and cyclohexanone.
摘要:
A process for increasing the production of monoalkylbenzenes is presented. The process includes utilizing a transalkylation process to convert dialkylbenzenes to monoalkylbenzenes. The transalkylation process recycles a portion of the effluent stream from the transalkylation reactor back to the feed of the transalkylation reactor. The recycled dialkylbenzenes and a portion of the recycled benzene are converted to monoalkylbenzenes.
摘要:
In a dehydrogenation process a hydrocarbon stream comprising at least one non- aromatic six-membered ring compound and at least one five-membered ring compound is contacted with a first catalyst comprising at least one metal component and at least one support and a second catalyst. The first catalyst is utilized to convert at least a portion of the at least one non-aromatic six-membered ring compound in the hydrocarbon stream to at least one aromatic compound and the second catalyst is utilized to convert at least a portion of the at least one five-membered ring compound in the hydrocarbon stream to at least one paraffin.
摘要:
Procedimiento para la obtención de hidrocarburos aromáticos a partir de una corriente que contiene al menos un hidrocarburo ligero seleccionado de la lista que comprende metano, etano, etileno, propano, propeno, propileno, butano, buteno o butadieno, que comprende poner en contacto dicha corriente con un catalizador, que comprende un material catalítico y un aglomerante, en un reactor de lecho fluidizado. Dicho reactor puede tener dos zonas de reacción, una oxidante y otra reductora.
摘要:
An improved process and system for the endothermic dehydrogenation of an alkane stream (1) is described. The process and system of the present invention comprise a back-mixed fluidized bed reactor (4). The alkane stream is dehydrogenated in a single reactor stage by contacting the alkane stream with a back-mixed fluidized bed (44) of catalyst. Deactivated catalyst (38) is withdrawn from the back-mixed fluidized reactor and heated to produce hot regenerated catalyst (36). The hot regenerated catalyst is returned to the back-mixed fluidized bed reactor at a rate sufficient to maintain the back-mixed fluidized bed reactor at substantially isothermal conditions.