Abstract:
The invention relates to a method and a device for putting into service a reactor and a catalyst, especially a catalyst and a reactor for dehydrogenating a hydrocarbon-containing charge in a plant for producing olefins. Before being put into service, the catalyst and the reactor run through a plurality of oxidation and reduction phases, thereby releasing the chloride contained in the catalyst. The released chloride is carried off into the atmosphere in a gaseous form.
Abstract:
The invention relates to a method for producing tri-n-propyl amine (TPA), wherein di-n-propyl amine is reacted in the presence of hydrogen and a copper-containing heterogeneous catalyst. The integrated method for producing TPA comprises the following operations: I) reacting n-propanol with ammonia in a reactor in the presence of an amination catalyst and optionally hydrogen to form a mixture of mono-n-propyl amine, DPA and TPA, II) separating unreacted ammonia, unreacted n-propanol and optionally hydrogen from the reaction product and returning at least the ammonia and propanol into the reactor in I); and separating the n-propyl amine mixture by distillation and separating the TPAs, III) reacting the DPAs resulting from the separation by distillation in II) in a reactor in the presence of hydrogen and a copper-containing heterogeneous catalyst to form TPA, and IV) feeding the reaction product from III) into the operation II).
Abstract:
The invention relates to a method and a device for the controlled regeneration of a catalyst and of a fired reactor, especially a catalyst and a reactor in a plant for producing olefins from a hydrocarbon-containing charge. During the regeneration phase of the catalyst for recovering the catalytic activity, the burners of the reactor are switched off. After the regeneration phase, the burners are re-ignited by means of inbuilt pilot burners. The pilot burners are monitored and their capacity is adjusted in such a manner that the heat loss of the reactor during the regeneration phase of the catalyst is compensated for.
Abstract:
The invention relates to a method for commercially obtaining propene from a gas flow containing propene and at least one additional hydrocarbon. Said method comprises the following steps; (a) the gas flow is brought into contact with an adsorber containing a porous metalorganic framework material containing at least one at least bidentate organic compound which is co-ordinately bound to at least one metal ion, said adsorber being charged with propene; and (b) the propene is released from the adsorber charged with the propene. The invention further relates to the use of a porous metalorganic framework material for commercially obtaining propene from a gas flow containing propene and at least one additional hydrocarbon.
Abstract:
The invention relates to a method for producing propene from propane. Said method comprises the following steps: A) a feed gas stream (a) containing propane is prepared; B) the feed gas stream (a) containing propane, is introduced with optionally water vapour and optionally, an oxygen-containing gas stream into a dehydrogenation zone and then the propane is dehydrogenated to form propene, and a product gas stream (b) containing propane, propene, methane, ethane, ethene, hydrogen, optionally carbon monoxide, carbon dioxide, water vapour and oxygen, is obtained; C) the product gas stream (b) is cooled, optionally compressed and then water vapour is separated by condensation and a product gas stream (c) depleted in water vapour is obtained; D) the product gas stream (c) is brought into contact with a selectively active adsorber which selectively adsorbs propene in the selected adsorption conditions, and an adsorber charged with propene and a gas stream (d2) depleted in propene and containing propane, methane, ethane, ethene and hydrogen, carbon monoxide and carbon dioxide are obtained; E) a gas stream (e1) containing propene is released from the adsorber charged with propene by reducing the pressure and/or heat of the adsorber.
Abstract:
The invention relates to a method for the production of a catalyst carrier, wherein Zirconium dioxide powder is mixed with a binding agent, optionally a pore forming agent, optionally an acid, water and optionally other additives to form a kneadable mass, said mass is homogenized in order to form shaped bodies, dried and calcinated. The binding agent is a monomer, oligomer or polymer organosilicon compound.Suitable binding agents are monomer, oligomer or polymer silanes, alkoxysilanes, aryloxysilanes, acryloxysilanes, oximinosilanes, halogensilanes, aminoxysilanes, aminosilanes, amidosilanes, silazanes or silicones. The invention also relates to a catalyst carrier thus produced, a catalyst containing said carrier and the use thereof as a dehydrogenation catalyst.