Steden
Christoph Steden, Oberursel DE
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20120232269 | METHOD FOR CONTINUOUSLY PRODUCING MELAMINE - A process for the continuous production of melamine from urea by means of a fluidized-bed reactor, wherein process gas guided in the process circuit is used as fluidizing gas and wherein the temperature of the process gas at the inlet of the conveying means for the fluidizing gas is adjusted by adjusting the mixing ratio of a process gas stream guided over a scrubber and of a process gas stream guided past the scrubber. | 09-13-2012 |
20130098752 | Process and Apparatus for the Distillation of Polymerization-Prone Compounds - In a process for distilling polymerization-prone compounds from liquid mixtures of matter which, apart from the readily polymerizable compound, also contain other components and also polymerization inhibitors, the evaporator is operated in forced circulation and at a pressure which makes possible superheating of the liquid with respect to its boiling point at the pressure within the distillation column. This is achieved by transporting the superheated liquid against a flow restrictor, e.g. an orifice plate. The liquid which is expanded and partially evaporated on passage through the flow restrictor is returned to the distillation column. In this manner the formation of an open vapour space in the evaporator circuit after heating downstream of the heat exchanger is avoided in that, in the design of the evaporator of the prior art, formation of polymer deposits frequently occurs. | 04-25-2013 |
20130206577 | PROCESS AND PLANT FOR THE DISTILLATION OF TEMPERATURE-SENSITIVE LIQUIDS - For the distillation of temperature-sensitive liquids, in particular acrylic acid and its esters, the liquid is heated in a column and at least partly evaporated. The vapor is guided through a condenser provided inside the column, in which the vapor is at least partly condensed. The condensed liquid is at least partly withdrawn from the column. The distillation is characterized in that the vapor not condensed yet is guided through the condenser cocurrently to the condensed liquid. | 08-15-2013 |
20130280148 | TUBE BUNDLE REACTOR HAVING A STRUCTURED PACKING - A tubular reactor for carrying out a catalytically supported, homogeneous chemical reaction in the gas phase at an elevated temperature and a subsequent cooling, wherein the reactor is arranged upright, and therefore the tubes extend vertically and the as flows downward through the tubes. The tubes are filled with a catalyst bed in the upper part thereof extending in the reaction zone of the reactor and are filled with a structured packing in the lower part, the cooling zone of the reactor. | 10-24-2013 |
20140061025 | DISTILLATION COLUMN AND METHOD FOR DISTILLING ACRYLIC ACID - A distillation column with external circulation evaporator and a sedimentation zone in the bottom of the column, from which the evaporator circulation is fed, and use of the distillation column according to the invention for the distillation of acrylic acid. | 03-06-2014 |
Christoph Steden, Oberusel DE
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20120234167 | Gas Scrubber Having an Integrated Heat Exchanger - A gas scrubber, equipped with heat exchanger surfaces constructed of thermoplates, suitable for cooling and cleaning a hot gas by avoiding an excessive thermal load of the washing liquid. | 09-20-2012 |
Christoph Steden, Frankfurt DE
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20130202368 | APPARATUS FOR DISCHARGING BULK MATERIAL - An apparatus for discharging bulk material from a container containing gas includes a single-shaft screw conveyor including a conveying tube having an axis of symmetry. A purge tank is disposed downstream of the screw conveyor with the conveying tube opening into the purge tank. The purge tank includes ports for a supply and discharge of a purge gas stream and an outlet opening for the bulk material. A closing cone with a cone tip and an axis of symmetry is shiftably mounted on its axis of symmetry. The closing cone is pressed with the cone tip from outside into an outlet opening of the conveying tube. The axis of symmetry of the closing cone coincides with the axis of symmetry of the conveying tube. | 08-08-2013 |
Stefan Steden, Hannover DE
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20130096703 | REPRESENTING GEOLOGICAL OBJECTS SPECIFIED THROUGH TIME IN A SPATIAL GEOLOGY MODELING FRAMEWORK - A method can include providing a geological time data structure configured to link objects of a reservoir model to geological times; linking one of the objects of the reservoir model to one of the geological times; generating simulation results for the reservoir model; and, based at least in part on the geological time data structure, outputting at least some of the simulation results along a geological time axis. Various other apparatuses, systems, methods, etc., are also disclosed. | 04-18-2013 |
20130298065 | Representing Geological Objects Specified Through Time In A Spatial Geology Modeling Framework - A method can include providing a geological time data structure configured to link objects of a reservoir model to geological times; linking one of the objects of the reservoir model to one of the geological times; generating simulation results for the reservoir model; and, based at least in part on the geological time data structure, outputting at least some of the simulation results along a geological time axis. Various other apparatuses, systems, methods, etc., are also disclosed. | 11-07-2013 |
Ulf Steden, Glinde DE
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20110231818 | Method and device for operating software-controlled devices - The method and the device serve for operating software-controlled devices. At least a portion of software for controlling at least two different devices is stored in the area of a data storage. The software is activatable such that, after a selection of a concrete device, the control software required for this device is made available for the user and an operation of the device becomes possible. | 09-22-2011 |