Abstract:
Verfahren zur Herstellung von Tri-n-propylamin (TPA), wobei man Di-n-Propylamin (DPA) in Gegenwart von Wasserstoff und eines kupferhaltigen Heterogen-Katalysators umsetzt. Integriertes Verfahren zur Herstellung von TPA, wobei es die folgenden Operationen umfasst: I) Umsetzung von n-Propanol mit Ammoniak in einem Reaktor in Gegenwart eines Aminierungskatalysators und gegebenenfalls Wasserstoff zu einem Gemisch von Mono-n-propylamin, DPA und TPA, II) Abtrennung von unumgesetztem Ammoniak, unumgesetztem n-Propanol und gegebenenfalls Wasserstoff aus dem Reaktionsaustrag und Rückführung zumindest des Ammoniaks und Propanols in den Reaktor in I), sowie destillative Auftrennung des n-Propylamingemischs und Abtrennung des TPAs, III) Umsetzung des in II) bei der destillativen Auftrennung anfallenden DPAs in einem Reaktor in Gegenwart von Wasserstoff und eines kupferhaltigen Heterogen-Katalysators zu TPA und IV) Zuführung des Reaktoraustrags aus III) in die Operation II).
Abstract:
Die Erfindung beschreibt einen Tragrost (1) für eine Schüttung (3), z.B. eine Katalysatorschüttung, in einer Vorrichtung (2), wobei der aufgeschüttete Katalysator (3) und der Tragrost (1) von gasförmigen oder flüssigen Reaktanten (R) durchströmt werden. Die Fläche des Tragrostes (1) ist größer als die Querschnittsfläche der Vorrichtung (2), in die der Tragrost eingebaut ist. Der Tragrost (1) besteht beispielsweise aus der Querschnittsfläche der Vorrichtung (2) mit einem aufgesetzten Zylinder (1a).
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.