Patent application number | Description | Published |
20100137670 | PROCESS AND APPARATUS FOR INJECTING OXYGEN INTO A REACTION GAS FLOWING THROUGH A SYNTHESIS REACTOR - Synthesis reactor comprising an apparatus for injecting oxygen, which can be initially charged in pure form, as air, or mixed with inert gas or water vapor, into a reaction gas which can flow through the synthesis reactor which finds use, for example, in an oxydehydrogenation plant, wherein oxygen and reaction gas have different temperatures, wherein a distribution element is provided upstream of the device for accommodating a catalyst charge in flow direction of the reaction gas, said distributor element comprising a distributor body, two tube plates and a multitude of gas guide tubes for passing the reaction gas through, and the oxygen can be supplied to the chamber between the gas guide tubes, wherein at least one baffle plate is arranged orthogonally to the gas guide tubes and divides the intermediate space into at least two distributor chambers, wherein the distributor chambers are connected to one another or merge into one another fluidically through one or more orifices, at least one gas line leads into the first distributor space in flow direction, through which the oxygen can be supplied, and the lower tube plate is provided in flow direction with a multitude of orifices in the form of nozzles, bores or the like, through which the oxygen can leave the intermediate space, wherein a solids-free gas mixing zone is provided below the lower tube plate. | 06-03-2010 |
20100234660 | REGENERATION OF CATALYSTS FOR DEHYDRATING ALKANES - The invention relates to a method for dehydrating alkanes, wherein the alkane is guided in a reactor for the dehydrogenation of alkanes via a catalyst, and the process may be carried out adiabatically or non-adiabatically, and the catalyst for dehydration can be regenerated after the reaction phase by means of transferring a gas, wherein said gas is guided via the catalyst after a short rinsing phase using water vapor, and said regeneration gas consists of a gas containing oxygen and of steam, and after regeneration the catalyst is freed of the gas containing oxygen by transferring steam, wherein the duration of the transfer of a gas containing oxygen is significantly reduced as compared to common methods and represents 70% or less of the total regeneration time, and the catalyst has an increased selectivity for forming alkene by means of carrying out the regeneration at a constant activity, and the catalyst is comprised of a metal of the group of platinum metals or group VIB of the periodic table of the elements, which is applied to a carrier in form of a compound or in elementary form, which substantially consists of oxides of the elements of tin, zinc, or aluminum. | 09-16-2010 |
20100263278 | GASIFICATION REACTOR AND PROCESS FOR ENTRAINED-FLOW GASIFICATION - A process and device for the gasification of liquid or fine-grain solid fuel materials with the aid of oxygenous, gaseous gasification agents in a reactor is described. Liquid slag is separated on the walls of the reactor. The synthesis gas is generated in a first reaction chamber arranged in the upper part of the reactor and the feedstock is fed to the upper part. Liquid slag precipitates on its lateral walls, with free downflow and no solidification of the slag surface. The lower side has a hole with a slag drop-off edge, from which the generated synthesis gas can be withdrawn in downward direction and the liquid slag can drop off the edge. A second chamber which is delimited by a water film is located under the opening and used to keep the synthesis gas dry and cool. A third chamber is adjacent to the bottom of the second and fed with water to cool the synthesis gas. A water bath is adjacent the bottom of the third chamber and collects the slag particles already solidified and dropped off or those particles still in the liquid phase. The synthesis gas is withdrawn from the pressure vessel in an area below or on the side of the third chamber but in any case located above the water bath. | 10-21-2010 |
20110301392 | VARIATION OF TIN IMPREGNATION OF A CATALYST FOR ALKANE DEHYDROGENATION - A catalyst for the dehydrogenation of alkanes or alkyl substituents of hydrocarbons, is a shaped body having at least one oxide from the elements of the main or secondary group II to IV of the periodic table or of a mixed oxide thereof serving as base material of the shaped body. The catalyst further contains an additional constituent which is an oxide of an element of the main group IV of the periodic table, added during the shaping process. A platinum compound and a compound of an element of the main group IV of the periodic table is used as a surface constituent of the catalyst. The invention further relates to the production of the catalyst and to a method for the dehydrogenation of alkanes using the catalyst. | 12-08-2011 |
20120060824 | METHOD AND APPARATUS FOR A CONSTANT STEAM GENERATION FROM THE WASTE HEAT OF AN ALKANE DEHYDROGENATION - The invention relates to a process and a device for an as constant as possible supply of steam flow from an alkane dehydrogenation, the process being carried out by passing a hydrocarbonaceous gas through reaction tubes loadable with a catalyst, and the reaction tubes, which are sealed towards the outside, running through a heating chamber which is heatable by means of burners, and the catalyst being regenerated for the reaction in a cyclic operating mode, in which the reaction is endothermic and the regeneration of the catalyst non-endothermic, and the capacity of the main burners is reduced during the regeneration of the catalyst, in which auxiliary burners, which serve to keep up the production of hot flue gas during the regeneration of the catalyst, are installed at the inlet of the flue gas duct to produce additional hot flue gas which is used for generating an as constant as possible amount of steam from the waste heat of the process. | 03-15-2012 |
20120137583 | METHOD FOR SUPPLYING AN ENTRAINED-FLOW GASIFICATION REACTOR WITH CARBONACEOUS FUELS - With a method for supplying an entrained-flow gasification reactor with carbonaceous fuel for the production of a gas that contains CO and H | 06-07-2012 |
20120197054 | PROCESS AND APPARATUS FOR DEHYDRATING ALKANES WITH EQUALIZATION OF THE PRODUCT COMPOSITION - A process for the dehydrogenation of alkanes. In several reactors of the adiabatic, allothermal or isothermal type or combinations thereof a gaseous alkane-containing material stream is passed through a catalyst bed in continuous operating mode. The gas stream produced contains an alkene, hydrogen and a non-converted alkane. In order to achieve a constant product composition, at least one of the process parameters of temperature, pressure or steam/hydrocarbon ratio is recorded in the form of measured values at one or several points of at least one of the reactors, where at least one of the process parameters is selectively controlled and influenced such that the composition of the product gas at the outlet of one reactor remains constant throughout the operating period. | 08-02-2012 |
20120266539 | METHOD FOR THE COMBINED RESIDUE GASIFICATION OF LIQUID AND SOLID FUELS - A process for joint entrained-bed gasification of ash-containing solid fuels and liquid fuels which are fed separately of each other to the coal gasification reactor via several burners, said burners having a concentric firing angle of greater than 0 degree such that soot formation is reduced and the conversion efficiency is increased, and the solid is conveyed to the gasification reactor together with an inert gas, and at least part of the ash-containing solid fuel contains fine coal particles which originate from coal mining and are not suited for fixed-bed gasification, and the liquid ash-containing fuel contains residues from a fixed-bed gasification. | 10-25-2012 |
20140374661 | METHOD FOR PRODUCING SYNTHESIS GAS BY GASIFYING A BIOMASS IN A FLUIDIZED BED - A method for producing synthesis gas by gasifying a biomass in a fluidized bed is disclosed wherein the biomass is fed to a fluidized bed gasifier. In order to eliminate vapor-forming alkalis produced during the gasification, the method brings the synthesis gas into contact with getter ceramics. | 12-25-2014 |