摘要:
The invention relates to a process for utilizing a hydrocarbon-containing and/or carbon dioxide-containing blast furnace gas, accompanying gas and/or biogas, characterized in that hydrocarbon-containing and/or carbon dioxide-containing blast furnace gas, accompanying gas and/or biogas is introduced into a reaction chamber, and the multicomponent mixture present in the blast furnace gas, accompanying gas and/or biogas is converted in a high-temperature zone at temperatures of above 1000°C and in the presence of a support into a product-gas mixture which consists of more than 95% by volume CO, CO 2 , H 2 , H 2 O, CH 4 and N 2 , and optionally into a carbon-containing solid of which more than 75% by weight, based on the total mass of the carbon-containing solid, is deposited onto the support, wherein the flow velocity of the gas mixture blast furnace gas, accompanying gas and/or biogas in the reaction zone is less than 20 m/s.
摘要:
The invention relates to a method for autothermal gas phase dehydrogenation of a hydrocarbon-containing gas stream (2) with an oxygen-containing gas stream (3), obtaining a reaction gas mixture in the presence of a heterogeneous catalyst which is constructed as a monolith (4), and regeneration of the catalyst in a reactor (1) in the form of a cylinder or prism, wherein: - the interior of the reactor (1) is subdivided by a plain cylindrical or prismatic gas-tight housing (G) that is arranged in the longitudinal direction of the reactor (1) into; - an internal region A and; - an external region B arranged coaxially to the internal region A, which is characterized in that the reactor is operated alternately in the production mode for the autothermal gas phase dehydrogenation, and in the regeneration mode, wherein: - the production mode for the autothermal gas phase dehydrogenation is run until the temperature elevation of the reaction gas mixture on exit of same from the discharge line (11) does not exceed 5 K, based on the time point from which the conversion rate fluctuates by no more than 1%, based on the final conversion rate, whereupon; - the reactor is switched into the regeneration mode, with supply of an inert regeneration gas which contains at least 10% by weight oxygen, based on the total weight of the regeneration gas.
摘要:
The invention relates to a reactor (1) in the form of a horizontal cylinder (3) for carrying out autothermal gas phase dehydration of a hydrocarbon-containing gas flow (2) with an oxygen-containing gas flow (3), yielding a reaction gas mixture, at a heterogeneous catalyst designed as a monolith (4), wherein the inner chamber of the reactor (1) is divided by a removable, circular cylindrical or prismatic housing G, which is disposed in the longitudinal direction of the reactor (1) and is gas-tight in the circumferential direction, into an inner area A having one or more catalytically active zones (5), in each of which a package of monoliths (4) stacked on each other, adjacent to each other, and arranged one behind the other is provided, a mixing zone (6) having fixed installed fixtures being provided in front of each active zone (5), and into an outer area B disposed coaxially to the inner area A, and wherein a heat exchanger (12) connected to the housing G is provided at an end of the reactor, characterized in that an inert gas is supplied to the outer area B.
摘要:
The invention relates to a gas-tight multilayer composite tube which has a heat transfer coefficient of > 500 W/m 2 /K and contains at least two layers, one layer made of a nonporous monolithic oxide ceramic and one layer made of an oxide fiber composite ceramic, and relates to a connection piece containing at least one gas-conducting metal line, some regions of which overlap at least two ceramic layers in the longitudinal direction of the composite tube, wherein one ceramic layer contains a nonporous monolithic ceramic, and the other ceramic layer contains a fiber composite ceramic. The invention also relates to the use of the multilayer composite tube as a reaction tube for endothermic reactions, jet tubes, flame tubes, or rotary tubes.