Evonik Industries and Uhde GmbH | Date: 2011-06-09
Supports having a catalytic coating comprising at least one porous and cavity-containing catalyst layer are described, cavities being irregular spaces having dimensions greater than 5 m in at least two dimensions or having cross-sectional areas of at least 10 m The catalytic coatings are distinguished by a high adhesive strength and can preferably be used in microreactors.
Uhde Gmbh | Date: 2010-04-21
With a device for influencing the flow, particularly in a horizontal connecting pipe ( This is achieved by means of a Venturi constriction in the flow path of the gas in the pipe (
UHDE GmbH | Date: 2010-01-19
A method for discharging the dust that occurs from pressurized gasification, using a dust precipitator having at least one discharge container assigned to it, is supposed to be configured in such a manner that nitrogen introduction into the raw gas is minimized or completely avoided, in order to free subsequent chemical syntheses from introduction of nitrogen, if at all possible, right from the start. This is achieved in that filter elements are positioned in the dust precipitator, which elements are back-flushed by means of a gas that contains carbon dioxide or pure CO
Uhde GmbH | Date: 2013-04-12
A device is disclosed for removing slag from a coal gasification reactor and to a slag water bath enclosed by the reaction vessel. The slag is discharged by means of a lock-type transfer vessel arranged downstream of the slag bath. The lock-type transfer vessel comprises one upper and one lower cylindrical section, the upper cylindrical section having a diameter larger than that of the lower cylindrical section and both sections being connected with each other via a tapered section which preferably is conical and the angle of the cone being similar to that of the angle of repose of the slag. Also disclosed is a process for removing slag from a coal gasification reactor and a slag water bath housed by the reaction vessel. The device permits a discharge of slag in a lock-type transfer vessel and precludes formation of slag incrustations in the lock-type transfer vessel.
Uhde Gmbh | Date: 2010-02-26
A process for the generation of a syngas in an entrained-flow gasification process includes a solid, carbon-containing fuel which is introduced via burners into a reactor which also supplies the oxygen for gasification. The fuel is introduced on a burner level where the burners are arranged concentrically around the reaction chamber or in the head area. The syngas obtained is discharged from the reaction chamber via a discharge nozzle, so that the syngas is passed into a collecting chamber for cooling by addition of low-temperature gaseous, vaporous or liquid cooling agents. A quench chamber is provided between the reactor and the collecting chamber. Additional burner levels are in the quench chamber via which a fuel material of renewable fuels or biofuels is introduced into the syngas, so that the heat enthalpy of the syngas can be utilized for the endothermic gasification reaction of the biological raw material. An apparatus for this generation of synthesis gas includes several burner levels, the renewable fuel being supplied to the gasification chamber with or without water vapour or oxygen and the enthalpy of the hot syngas being utilized for the gasification of the renewable fuel.