Abstract:
PROBLEM TO BE SOLVED: To provide a continuous heterogeneously catalyzed partial dehydrogenation of a hydrocarbon in the gas phase and in the presence of molecular oxygen, in which a part of a product gas is recirculated to a reaction zone, and a reactor for carrying out such a process. SOLUTION: In the process, a reaction gas containing at least one hydrocarbon to be dehydrogenated is supplied to the reaction zone; the reaction gas is passed in the reaction zone through at least one fixed catalyst bed, wherein the reaction gas is subjected to catalytic dehydrogenation to produce molecular hydrogen and at least one partial dehydrogenated hydrocarbon; the reaction gas, before and/or after entering the reaction zone, is added with a gas containing at least one molecular oxygen-containing gas; the molecular oxygen partially oxidizes the molecular hydrogen contained in the reaction gas in the reaction zone to form water steam; a gas product containing the molecular hydrogen, water steam, at least one dehydrogenated hydrocarbon, and at least one hydrocarbon to be dehydrogenated is withdrawn from the reaction zone; at least one hydrocarbon to be dehydrogenated in the gas phase is partially dehydrogenated by a continuous heterogeneous catalyst. In the partial dehydrogenation method using the continuous heterogeneous catalyst, the reaction gas withdrawn from the reaction zone is divided into two parts being the same in composition, one of which is recycled into reaction zone as a circulating gas. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
The invention relates to a method for the parallel production of hydrogen and of one or more carbon-containing products. In the method, hydrocarbons are introduced into a reaction chamber (R) and are thermally decomposed into carbon and hydrogen in the presence of a carbon-rich granulated material (W). The invention is characterised in that at least a portion of the thermal energy necessary for the decomposition of the hydrocarbon is introduced into the reaction chamber (R) via a gaseous heat transfer medium.
Abstract:
The present invention relates to an integrated method for producing pulp and at least one organic liquid or liquefiable valuable material, in which a) a lignocellulosic starting material is prepared and subjected to disruption with an aqueous-alkaline treatment medium, b) from the disrupted material a cellulose-enriched fraction and a cellulose-depleted black liquor are isolated, c) the black liquor is subjected to a treatment with at least one organic liquid or liquefiable valuable material and at least one exhaust gas stream being obtained, d) at least one of the exhaust gas streams of step c) is recirculated to the method for producing pulp and utilized.
Abstract:
The invention relates to a method for the parallel production of hydrogen (3) and of one or a plurality of carbon-containing products (8). In the method, hydrocarbons (2) are introduced into a reaction chamber (R) and are thermally decomposed into carbon and hydrogen in the presence of a carbon-rich granulated material (W). The invention is characterised in that at least a portion of the thermal energy necessary for the decomposition of the hydrocarbons is introduced into the reaction chamber (R) via a gaseous heat transfer medium.
Abstract:
The present invention relates to the oxidative coupling of methane to higher alkanes and alkenes, wherein the oxygen is fed into the reaction zone through a gas-tight, mixed transmitting membrane. The oxidative coupling is catalytic, wherein the gas-tight membrane can serve as a catalyst, but a catalyst active in the oxidative coupling of methane can also be used.
Abstract:
The invention relates to a device for receiving hot, corrosive liquids (7), comprising a chamber enclosed by a wall (21) for receiving the liquid (7), wherein the chamber comprises an interior insulation (19). The invention further relates to a use of the device for storing corrosive liquids for storing a heat storage medium comprising sulfur.
Abstract:
The invention relates to a method for performing endothermic process, characterized in that the annual average total energy required for the endothermic process originates from at least two different energy sources. One of the energy sources is an electrical energy source, the power of which varies between 0 and 100% of the required total power, and three different energy modes individually can provide the total required power for the endothermic process: (i) exclusively electrical energy, (ii) a mixture of electrical energy and at least one additional non-energy source, or (iii) exclusively non-electrical energy. The transition time in which the change from one energy mode to another energy mode is completed 30 minutes at most.
Abstract:
Procedimiento para la preparación en paralelo de hidrógeno y uno o varios productos que contienen carbono, en el que se introducen hidrocarburos en un espacio de reacción y se descomponen en presencia de un granulado rico en carbono térmicamente en carbono e hidrógeno, caracterizado porque al menos una parte de la energía térmica necesaria para la descomposición de hidrocarburos se proporciona a través de uno o varios portadores de calor gaseosos, generándose la energía térmica por fuera del espacio de reacción e incorporándose a continuación el portador de calor gaseoso así calentado al espacio de reacción, siendo inerte el portador de calor gaseoso para la reacción de descomposición de hidrocarburos y/o representando un producto de esta reacción de hidrocarburos y emitiendo en el espacio de reacción el portador de calor gaseoso su calor al o a los reactantes.