摘要:
A burner (10) for the partial oxidation of a hydrocarbon feedstock, comprising a combustion chamber and a pre-mixing chamber (E), and a plurality of annular passages for feeding fuel and oxidizer to the combustion chamber, said plurality of annular passages comprising at least a first annular passage for the fuel, and at least a second coaxial annular passage for the oxidizer, producing a layered flow into the premixing chamber (E). In a preferred embodiment the burner has an annular passage (1) for fuel or oxidizer surrounded by two other passages (2 and 3) for the oxidizer or fuel, respectively; in a further embodiment a start-up burner (20) is integrated with the main process burner, said start-up burner having a combustion chamber (L), a main hub (G) and a swirler (H), and providing a smooth transition from the start-up to the process phase that does not require any mechanical intervention of the pressure vessel/burner assembly and can be performed through automatic control systems.
摘要:
A process and related reactor (1) for oxidation of a hydrocarbon feedstock are disclosed, the reactor (1) comprising a vessel (3) and a neck (5) with an axial burner (6) and a tangential gas inlet (2), wherein the neck (5) has a swirling chamber (10) located below said burner (6) and connected to said gas inlet (2), to produce a gas vortex (V) which optimizes the mixing between the gas stream (G) and the oxidizer in said neck (5). Preferably the swirling chamber (10) has an internal surface (12) with a log-spiral profile.
摘要:
A feed injector system comprises a movable central member, a first member substantially concentric with the central member to define a first channel for conveying a first fluid oxidizer stream, a second member substantially concentric with the first member to define a second channel for conveying a fuel feed, and a third member substantially concentric with the second member to define a third channel for conveying a second fluid oxidizer steam. The first member and the second member are configured to enhance instability in the fuel feed emanating from the second channel.
摘要:
A reformer installation for generating a hydrogen-rich product gas from a hydrocarbon-containing fluid, includes a housing having an interior, at least one reformer zone disposed in the interior of the housing and at least one feed line leading to the housing. A thermally insulating heat shield causes a reduction of an operating temperature in the at least one reformer zone by 50% to take at least 8 hours and preferably causes a reduction of the operating temperature in the at least one reformer zone by 20% to take at least 8 hours. This improves the cold start performance of the reformer installation, since the reformer installation is prevented from cooling off too quickly. That is particularly advantageous for the use of reformer installations of this type in automobile construction, since those kinds of reformer installations are activated again and again at certain intervals.
摘要:
A hydrocarbon partial oxidation process for obtaining gaseous mixtures comprising hydrogen and carbon monoxide is carried out through a burner (10) comprising a mixing chamber (12) that has an inner side wall (12a) extending between at least one inlet opening (23, 23a) and an outlet opening (24), independent gaseous flows of hydrocarbons and oxygen, respectively, being continuously fed into said mixing chamber (12) to form a gaseous mixture advancing towards said outlet opening (24) to be fed into a combustion chamber (14) of the gaseous mixture itself, into said mixing chamber (12) and substantially in contact with the inner side wall (12a) thereof, a flow of an inert fluid is also fed in equicurrent to said gaseous mixture, with formation of a respective annular flow of inert fluid, enveloping said gaseous mixture from which it is substantially separated by a respective inner limit layer, said annular flow of inert fluid having, at said limit layer, an advancing speed at least equal to the speed of propagation of the flame in said gaseous mixture.
摘要:
By means of a method and a system for heating and partial oxidation of not separately pre-heated, pre-reformed steam/natural gas mixture for an NH3 synthesis gas, whereby energy is supplied to the gas stream (raw synthesis gas), in the direction of flow, after a primary reformer, a solution is to be created, with which soot formation is to be prevented as much as possible, whereby the possibility of the addition of variable amounts, for example of N2 and O2 or mixtures thereof, is also supposed to be possible.This is achieved, according to the method, in that the energy is supplied directly after the primary reformer, by way of at least one pore burner positioned in the gas discharge line of the primary reformer.
摘要:
A method and a system for the vaporization of a liquid fuel is provided and includes providing a supply of a liquid fuel and an oxidant, atomizing the liquid fuel and mixing it with the oxidant, vaporizing the fuel in thermal radiation, catalytically reacting the fuel oxidant mixture, and providing an ignition source for initiating the catalytic reaction. A hydrocarbon fuel can be mixed with oxygen, as a constituent of air, preferably forming a fuel rich fuel air mixture that passes through a catalytic reactor having an ultra-short channel length metal monolith substrate. The fuel air mixture is vaporized and partially oxidized.
摘要:
An apparatus comprises a supplier of air and/or fuel, a main passageway fluidly coupled to the supplier to receive air and/or fuel therefrom to provide a fuel-rich air-and-fuel main mixture in the main passageway, and a pilot flame generator mounted in the main passageway. The pilot flame generator defines therein a pilot passageway that is fluidly coupled to the supplier to receive air and/or fuel therefrom and is fluidly coupled to the main passageway to receive air and/or fuel therefrom to provide an air-and-fuel pilot mixture in the pilot passageway. The pilot flame generator comprises an ignition device configured to ignite the pilot mixture to generate a pilot flame that initiates a partial oxidation reaction of the main mixture so as to generate reformate gas. An associated method is disclosed.
摘要:
A multi-stage combustion fuel reformer (20) wherein heat energy from a leaner-burning stage (22) is used to accelerate the fuel reforming kinetics of a richer-burning stage (28). The two stages may be axially arranged (36) or radially arranged (50) with respect to each other. Both stages (64, 66) may utilize gas-phase combustion; or both stages (78, 82) may utilized catalytic combustion; or both gas-phase ((90) and catalytic combustion (92) may be used together. The multi-stage reformer (112) may form part of a gas-to-liquid fuel reforming system (110).
摘要:
The invention relates to a high-temperature reactor whose high-temperature heat insulation (3) is made from a loosely layered insulating material. A longitudinal expansion gap (5) or a flexible insulating material for compensating for longitudinal expansions of the insulating material is provided at at least one end of the high-temperature reactor.