Patent application number | Description | Published |
20080214883 | REACTOR FOR CARRYING OUT A CONTINUOUS OXYDEHYDROGENATION AND PROCESS - A reactor ( | 09-04-2008 |
20080233043 | Method For the Production of Chlorine By Means of Gas Phase Oxidation of Hydrogen Chloride - A process for preparing chlorine by gas-phase oxidation of hydrogen chloride by means of a gas stream comprising molecular oxygen in the presence of a fixed-bed catalyst, wherein the process is carried out in a reactor ( | 09-25-2008 |
20100018292 | METHOD FOR LEAKAGE MONITORING IN A TUBE BUNDLE REACTOR - A method is proposed for leakage monitoring in a tube bundle reactor ( | 01-28-2010 |
20100022785 | METHOD FOR PRODUCING PHTHALIC ANHYDRIDE - Processes comprising: (a) providing a reactant comprising a component selected from the group consisting of o-xylene, naphthalene and mixtures thereof, and a gas comprising oxygen; (b) reacting the reactant and the gas in a reaction system, in the presence of a catalyst, to form phthalic anhydride; wherein the reaction system comprises: (i) at least two reaction zones, each reaction zone cooled with a coolant; and (ii) an intermediate cooling zone disposed between a first of the at least two reaction zones and a second of the at least two reaction zones; and wherein the coolant entering the first of the at least two reaction zones has a temperature which is more than 20° C. higher than a temperature of the coolant entering the second of the at leas two reaction zones. | 01-28-2010 |
20100063304 | APPARATUS FOR AUTOMATIC CATALYST EXCHANGE IN A REACTOR WITH A BUNDLE OF CATALYST TUBES - What is proposed is an apparatus for automatic catalyst exchange in a plurality of process steps in the catalyst tubes of a reactor with a bundle of catalyst tubes, which are welded in or rolled in between an upper tube plate and a lower tube plate in longitudinal direction of the reactor, and welded tight, | 03-11-2010 |
20100094071 | METHOD FOR PROVIDING AN OXYGEN-CONTAINING GAS STREAM FOR THE ENDOTHERMIC REACTION OF AN INITIAL STREAM COMPRISING ONE OR MORE HYDROCARBONS - A method is proposed for providing an oxygen-containing gas stream for the endothermic reaction of an initial stream comprising one or more hydrocarbons, having a predetermined oxygen concentration and a predetermined temperature, wherein a fluid fuel stream
| 04-15-2010 |
20100210870 | METHOD FOR PRODUCING ISOCYANATES - The present invention relates to a process for preparing isocyanates. | 08-19-2010 |
20100233047 | HORIZONTAL REACTOR FOR REACTING A FLUID EDUCT STREAM WITH A FLUID OXIDANT STREAM IN THE PRESENCE OF A SOLID CATALYST - A reactor ( | 09-16-2010 |
20100305356 | METHOD FOR PRODUCING ISOCYANATES - The present invention relates to a process for preparing isocyanates. | 12-02-2010 |
20110110830 | SHELL-AND-TUDE REACTOR FOR PREPARING MALEIC ANHYDRIDE - An apparatus for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of a feed stream comprising hydrocarbons having at least 4 carbon atoms per molecule, which comprises a reactor having a bundle of reaction tubes into which a solid-state catalyst over which the exothermic reaction of the feed stream with an oxygen-comprising gas stream takes place has been introduced and also one or more. pumps and one or more heat exchangers which are located outside the reactor and through which a heat transfer medium formed by a salt melt flows through the intermediate space in the reactor between the reaction tubes and takes up the heat of reaction, with the temperature of the salt melt being in the range from 350 to 480° C., wherein the reaction tubes are made of a heat-resistant alloy steel which comprises either at least 0.5% by weight of chromium or at least 0.25% by weight of molybdenum or at least 0.5% by weight of chromium and at least 0.25% by weight of molybdenum, is proposed. | 05-12-2011 |
20110130607 | REACTOR FOR CARRYING OUT AUTOTHERMAL GAS-PHASE DEHYDROGENATIONS - A reactor ( | 06-02-2011 |
20110269995 | REACTOR AND PROCESS FOR PREPARING PHOSGENE - A reactor ( | 11-03-2011 |
20110288334 | REACTOR AND PROCESS FOR PREPARING PHOSGENE - A reactor ( | 11-24-2011 |
20110319662 | METHOD FOR PRODUCING PHOSGENE - A process for preparing phosgene by reaction of a feed stream ( | 12-29-2011 |
20120095255 | PROCESS FOR PREPARING ISOCYANATES - Process for preparing isocyanates by reacting the corresponding amines with phos-gene comprising (a) providing at least one amine-comprising feed stream and at least one phosgene-comprising feed stream, (b) mixing the feed streams to form at least one reaction mixture in a mixing zone, (c) reacting the at least one reaction mixture in a reaction zone and (d) working-up the product mixture obtained from (c). | 04-19-2012 |
20120142959 | METHOD FOR PRODUCING DIISOCYANATES BY GAS-PHASE PHOSGENATION - A process for preparing diisocyanates by gas-phase phosgenation starting out from a feed stream comprising the corresponding diamines and a phosgene-comprising feed stream, in which the feed streams are separately converted into the gas phase and preheated to the reaction temperature of the gas-phase phosgenation, wherein the waste heat from a plant for preparing chlorine by heterogeneously catalyzed oxidation of hydrogen chloride by the Deacon process is utilized for this purpose, is proposed. | 06-07-2012 |
20120157737 | REACTOR FOR CARRYING OUT AN AUTOTHERMAL GAS-PHASE DEHYDROGENATION - A reactor includes an essentially horizontal cylinder for carrying out an autothermal gas-phase dehydrogenation of a hydrocarbon-comprising gas stream using an oxygen-comprising gas stream to give a reaction gas mixture over a heterogeneous catalyst configured as monolith. The interior of the reactor is divided by a detachable, cylindrical or prismatic housing, which is arranged in the longitudinal direction of the reactor and is gastight in the circumferential direction, into an inner region having one or more catalytically active zones, each having a packing composed of monoliths stacked on top of one another, next to one another and behind one another and before each catalytically active zone in each case a mixing zone having solid internals are provided and into an outer region, which is supplied with an inert gas, arranged coaxially to the inner region. A heat exchanger is connected to the housing at one end of the reactor. | 06-21-2012 |
20120226087 | PROCESS FOR WORKUP OF A STREAM COMPRISING BUTENE AND/OR BUTADIENE - The invention relates to a process for workup of a stream ( | 09-06-2012 |
20120251435 | PROCESS FOR PREPARING ISOCYANATES - A process is proposed for preparing isocyanates by phosgenating the corresponding amines in the gas phase, which comprises
| 10-04-2012 |
20130035529 | CONTINUOUS PROCESS FOR CARRYING OUT AUTOTHERMAL GAS-PHASE DEHYDROGENATIONS - The invention relates to a process for the autothermal gas-phase dehydrogenation of a hydrocarbon-comprising gas stream by means of an oxygen-comprising gas stream over a heterogeneous catalyst configured as a monolith to give a reaction gas mixture and regeneration of the catalyst in a reactor in the form of a cylinder or prism, wherein the reactor is operated alternately in the production mode of the autothermal gas-phase dehydrogenation and in the regeneration mode. | 02-07-2013 |
20130035531 | REACTOR FOR CARRYING OUT AN AUTOTHERMAL GAS-PHASE DEHYDROGENATION - A reactor in the form of a cylinder or prism wherein
| 02-07-2013 |
20130060062 | PROCESS FOR PREPARING ISOCYANATES - Process for preparing isocyanates by reacting the corresponding amines comprised in at least one feed stream A with phosgene comprised in at least one feed stream P in a reaction plant comprising at least one mixing zone and at least one reaction zone, wherein feed stream A and/or feed stream P optionally comprise one or more inert material s and, | 03-07-2013 |
20130072717 | REACTOR AND PROCESS FOR PREPARING PHOSGENE - A reactor ( | 03-21-2013 |
20130150620 | METHOD FOR PRODUCING ISOCYANATE - The invention relates to a process for preparing an isocyanate, which involves contacting fluid streams of amine, phosgene and inert medium in at least one mixing device, such that an inert medium stream is metered at least between one amine stream and one phosgene stream within the mixing device, and then reacting an amine with phosgene in a reaction chamber to form an isocyanate. In this process the inert medium stream is metered such that a point of first contact of the amine and the phosgene occurs at a distance from a surface of the mixing device, and a turbulent flow is present in the reaction chamber. | 06-13-2013 |
20140171709 | REACTOR FOR CARRYING OUT AN AUTOTHERMAL GAS-PHASE DEHYDROGENATION - A reactor for gas-phase dehydrogenation of a hydrocarbon-comprising stream with an oxygen-comprising stream over a monolithic heterogeneous catalyst. Catalytically active zone(s) comprising monoliths packed next to one another and/or above one another and a mixing zone having fixed internals upstream of each catalytically active zone. Feed line(s) for the hydrocarbon-comprising gas stream to be dehydrogenated at the lower end of the reactor. Independently regulable feed line(s), which supply distributor(s), for the oxygen-comprising gas stream into each of the mixing zones and discharge line(s) for the reaction gas mixture of the autothermal gas-phase dehydrogenation at the upper end of the reactor. The interior wall of the reactor is provided with insulation. The catalytically active zone(s) is accessible from the outside of the reactor via manhole(s). The catalytically active zone(s), mixing zone, independently regulable feed line(s), and distributor(s), may be designed as one component which can individually be mounted and removed. | 06-19-2014 |
20150080600 | PROCESS FOR PREPARING ISOCYANATES - The present invention relates to gas phase phosgenation of amines for preparation of isocyanates. In the present invention, phosgene is prepared by reacting chlorine with an excess of carbon monoxide in a gas phase. The obtained phosgene-containing reaction mixture is divided into two streams by a thermal and/or a membrane separating process. The first stream is a low-carbon monoxide stream of no more than 1% by weight of carbon monoxide, based on a total weight of the first stream. The second stream is a carbon monoxide-rich stream of more than 10% by weight of carbon monoxide, based on a total weight of the second stream. The first stream is used as the phosgene-containing reactant stream in the gas phase phosgenation of amines to prepare isocyanates. The second stream can be recycled into the phosgene synthesis. | 03-19-2015 |