Abstract:
A system is set forth for the exothermic generation of soot depleted syngas comprising (i) reacting a hydrocarbon-containing fuel with an oxygen containing gas in a first reactor to produce the syngas and byproducts comprising CO2, H2O and soot; and (ii) introducing the syngas and byproducts into a second reactor containing a non-carbonaceous material that traps the soot for a sufficient time such that the majority of the byproduct soot is gasified via reaction with the byproduct CO2 and/or H2O to produce a syngas stream that is depleted in the soot. The system is particularly suitable for the practice of heat exchange reforming therein a portion of the heat is recovered from the soot depleted syngas stream and used as at least a portion of the heat to facilitate the additional production of syngas via the (endothermic) catalytic reforming of natural gas and steam.
Abstract:
A steam-hydrocarbon reforming process and apparatus wherein reformate from a prereformer is reacted in a gas heated reformer which is heated by reformed gas from a primary reformer. Reformate from the gas heated reformer is passed to the primary reformer as feed gas.
Abstract:
A process for producing a hydrogen-containing product gas by catalytic steam-hydrocarbon reforming with an overall steam-to-carbon molar ratio between 1.5 and 2.4 for the process. The process stream is reacted in at least two prereformers prior to reaction in catalyst-containing tubes in a top-fired reformer furnace. The process stream is reacted adiabatically in the first prereformer, while the process stream is heated prior to being introduced into the second prereformer and/or the second prereformer is heated. The process avoids carbon formation on the catalyst in the catalyst-containing tubes in the primary reformer.
Abstract:
A process for adiabatically prereforming a feedstock, includes: providing an adiabatic reactor; providing a catalyst containing 1-20 wt. % nickel and 0.4-5 wt. % potassium, wherein the catalyst has an overall catalyst porosity of 25-50% with 20-80% of the overall catalyst porosity contributed by pores having pore diameters of at least 500 Å; providing the feedstock containing natural gas and steam, wherein the natural gas contains an initial concentration of higher hydrocarbons, and a ratio of steam to natural gas in the feedstock is from 1.5:1 to 5:1; preheating the feedstock to a temperature of 300-700° C. to provide a heated feedstock; providing the heated feedstock to the reactor; and producing a product containing hydrogen, carbon monoxide, carbon dioxide, unreacted methane, and steam, wherein said product contains a reduced concentration of higher hydrocarbons less than the initial concentration of higher hydrocarbons, to prereform the feedstock.
Abstract:
Process for producing hydrogen comprising reacting at least one hydrocarbon and steam in the presence of a complex metal oxide and a steam-hydrocarbon reforming catalyst in a production step under reaction conditions sufficient to form hydrogen gas and a spent complex metal oxide, wherein the complex metal oxide is represented by the formula AxByOn wherein A represents at least one metallic element having an oxidation state ranging from +1 to +3, inclusive, wherein the metallic element is capable of forming a metal carbonate; x is a number from 1 to 10, inclusive; B represents at least one metallic element having an oxidation state ranging from +1 to +7, inclusive; y is a number from 1 to 10, inclusive; and n represents a value such that the complex metal oxide is rendered electrically neutral.
Abstract translation:包括在生产步骤中在复合金属氧化物和蒸汽 - 烃重整催化剂存在下使至少一种烃和蒸汽与足以形成氢气的反应条件和废复合金属氧化物反应的方法,其中复合金属 氧化物由公式<?in-line-formula description =“In-line Formulas”end =“lead”?> A sub> B sub> 其中A表示至少一种具有+1至+3的氧化态的金属元素,包括端值在内,其中, 金属元素能够形成金属碳酸盐; x是1到10的数字,包括1和10; B表示至少一种具有+1至+7的氧化态的金属元素,包括端值; y是从1到10的数字,包括; n表示使复合金属氧化物呈电中性的值。
Abstract:
A process for producing a high temperature COx-lean product gas from a high temperature COx-containing feed gas, includes: providing a sorption enhanced reactor containing a first adsorbent, a shift catalyst and a second adsorbent; feeding into the reactor a feed gas containing H2, H2O, CO and CO2; contacting the feed gas with the first adsorbent to provide a CO2 depleted feed gas; contacting the CO2 depleted feed gas with the shift catalyst to form a product mixture comprising CO2 and H2; and contacting the product mixture with a mixture of second adsorbent and shift catalyst to produce the product gas, which contains at least 50 vol. % H2, and less than 5 combined vol. % of CO2 and CO. The adsorbent is a high temperature adsorbent for a Sorption Enhanced Reaction process, such as K2CO3 promoted hydrotalcites, modified double-layered hydroxides, spinels, modified spinels, and magnesium oxides.
Abstract translation:一种由高温含CO 2原料气体制备高温CO 2 - 产物气体的方法包括:提供含有第一吸附剂的吸附增强反应器, 换挡催化剂和第二吸附剂; 向反应器中加入含有H 2,H 2 O,CO和CO 2的进料气体; 使进料气体与第一吸附剂接触以提供CO 2 CO 2贫化的进料气体; 使CO 2 2贫的进料气与转化催化剂接触以形成包含CO 2和H 2的产物混合物; 并将产物混合物与第二吸附剂和变换催化剂的混合物接触以产生产物气体,其含有至少50vol。 %H 2,和小于5的组合体积。 CO 2%和CO的吸附剂吸附剂是用于吸附增强反应方法的高温吸附剂,例如K 2 CO 3促进的水滑石 改性双层氢氧化物,尖晶石,改性尖晶石和氧化镁。
Abstract:
An ion transport membrane system comprising (a) a pressure vessel having an interior, an exterior, an inlet, and an outlet; (b) a plurality of planar ion transport membrane modules disposed in the interior of the pressure vessel and arranged in series, each membrane module comprising mixed metal oxide ceramic material and having an interior region and an exterior region, wherein any inlet and any outlet of the pressure vessel are in flow communication with exterior regions of the membrane modules; and (c) one or more gas manifolds in flow communication with interior regions of the membrane modules and with the exterior of the pressure vessel. The ion transport membrane system may be utilized in a gas separation device to recover oxygen from an oxygen-containing gas or as an oxidation reactor to oxidize compounds in a feed gas stream by oxygen permeated through the mixed metal oxide ceramic material of the membrane modules.
Abstract:
An ion transport membrane system comprising (a) a pressure vessel having an interior, an exterior, an inlet, and an outlet; (b) a plurality of planar ion transport membrane modules disposed in the interior of the pressure vessel and arranged in series, each membrane module comprising mixed metal oxide ceramic material and having an interior region and an exterior region, wherein any inlet and any outlet of the pressure vessel are in flow communication with exterior regions of the membrane modules; and (c) one or more gas manifolds in flow communication with interior regions of the membrane modules and with the exterior of the pressure vessel.The ion transport membrane system may be utilized in a gas separation device to recover oxygen from an oxygen-containing gas or as an oxidation reactor to oxidize compounds in a feed gas stream by oxygen permeated through the mixed metal oxide ceramic material of the membrane modules.
Abstract:
Process for producing hydrogen comprising reacting at least one hydrocarbon and steam in the presence of a complex metal oxide and a steam-hydrocarbon reforming catalyst in a production step under reaction conditions sufficient to form hydrogen gas and a spent complex metal oxide, wherein the complex metal oxide is represented by the formula AxByOn wherein A represents at least one metallic element having an oxidation state ranging from +1 to +3, inclusive, wherein the metallic element is capable of forming a metal carbonate; x is a number from 1 to 10, inclusive; B represents at least one metallic element having an oxidation state ranging from +1 to +7, inclusive; y is a number from 1 to 10, inclusive; and n represents a value such that the complex metal oxide is rendered electrically neutral.
Abstract translation:包括在生产步骤中在复合金属氧化物和蒸汽 - 烃重整催化剂存在下使至少一种烃和蒸汽与足以形成氢气的反应条件和废复合金属氧化物反应的方法,其中复合金属 氧化物由公式<?in-line-formula description =“In-line Formulas”end =“lead”?> A sub> B sub> 其中A表示至少一种具有+1至+3的氧化态的金属元素,包括端值在内,其中, 金属元素能够形成金属碳酸盐; x是1到10的数字,包括1和10; B表示至少一种具有+1至+7的氧化态的金属元素,包括端值; y是从1到10的数字,包括; n表示使复合金属氧化物呈电中性的值。
Abstract:
Reactive diluent fluid (22) is introduced into a stream of synthesis gas (or “syngas”) produced in a heat-generating unit such as a partial oxidation (“POX”) reactor (12) to cool the syngas and form a mixture of cooled syngas and reactive diluent fluid. Carbon dioxide and/or carbon components and/or hydrogen in the mixture of cooled syngas and reactive diluent fluid is reacted (26) with at least a portion of the reactive diluent fluid in the mixture to produce carbon monoxide-enriched and/or solid carbon depleted syngas which is fed into a secondary reformer unit (30) such as an enhanced heat transfer reformer in a heat exchange reformer process. An advantage of the invention is that problems with the mechanical integrity of the secondary unit arising from the high temperature of the syngas from the heat-generating unit are avoided.