摘要:
A separation method and apparatus that separates a component from a feed stream by use of a membrane in which separation is driven, at least in part, by a sweep stream. The sweep stream may be pumped to a supercritical pressure and then heated to at least near supercritical temperature, at least in part, through heat exchange with a component laden sweep stream being discharged from the membrane. A multi-component mixture can also be used that will produce the sweep stream as a vapor as a result of the heat exchange. The component laden sweep stream, due to cooling through the indirect heat exchange, will form a two- phase fluid that can be phase separated into a vapor phase enriched in the component that can be taken as a product and a residual liquid that can be recirculated in the formation of the sweep stream in the liquid state. In one embodiment the component is hydrogen.
摘要:
An apparatus for separating water vapor from a water-vapor containing gas mixture is described. The apparatus may include a mixed ion conducting membrane having at least a portion of one surface exposed to the water-vapor containing gas mixture and at least a portion of a second surface, that is opposite the first surface, that is exposed to a second gas mixture with a lower partial pressure of water vapor. The membrane may include at least one non-porous, gas-impermeable, solid material that can simultaneously conduct oxygen ions and protons. At least some of the water vapor from the water-vapor containing gas mixture is selectively transported through the membrane to the second gas mixture.
摘要:
A ceramic monolithic multi-channel module support (10) has a module hydraulic diameter (102) in a range about 9 to 100mm, an aspect ratio of the module hydraulic diameter (102) to a module length (104) greater than 1, a plurality of feed flow channels (110) distributed substantially in parallel over a module cross-section, the plurality of feed flow channels (110) having a size and shape defining a channel density in the range of about 50-800 channels/in 2 (7.8-124 channels/cm 2 ) in a module frontal area, a channel hydraulic diameter (112) in the range of about 0.5-3 mm, a rim distance (120) having a thickness greater than 1.0mm (0.04in), and a percent open frontal area (OFA) in the range of about 20-80 %.
摘要翻译:陶瓷单块多通道模块支撑件(10)具有在大约9到100mm范围内的模块水力直径(102),模块水力直径(102)与模块长度(104)的长宽比大于1,a 多个进料流动通道(110)基本上在模块横截面上平行分布,所述多个进料流动通道(110)具有限定在约50-800通道/ in的范围内的通道密度的尺寸和形状 > 2 SUP>(7.8-124通道/ cm 2),通道水力直径(112)在约0.5-3mm的范围内,轮缘距离(120 ),其厚度大于1.0mm(0.04in),开放前面积百分比(OFA)在约20-80%的范围内。
摘要:
Methods, apparatuses, and reactors to extract and purify gases from a mixed gas stream by way of a phase-conversion membrane (2000) that selectively chemical converts, absorbs, adsorbs, or dissolves a desired component gas from the mixed stream into a second phase and then chemically reconverts, desorbs, or releases the desired component gas from the second phase in purified form.
摘要:
The present invention is drawn toward systems and methods of extracting hydrogen gas from an ambient (14) or conditioned atmosphere (34), preferably for use in a hydrogen fuel cell. The hydrogen collection system is defined by walls (12) that are preferentially permeable to hydrogen gas and substantially impermeable to gases reactive with hydrogen gas. Further, the walls (12) are preferably extensively folded to increase the surface area through which hydrogen gas can pass. In order to facilitate the passing of hydrogen gas through the walls (12) of the hydrogen collection system, a pumping device (20) coupled to the system can be provided. Once the hydrogen gas has been collected, it can be reacted with oxygen or otherwise used in the collection chamber (10) or transported to a different chamber (46) through a conduit (28) where it can be stored or used.
摘要:
The invention relates to a composite structure consisting of a relatively long filtration bar comprising, from the outside, an ultra-thin layer (26) that is selectively permeable to hydrogen and made from palladium or silver alloy. Said layer is disposed on a permeable, rigid, refractory substrate consisting of a more or less solid body (30) that is covered with an intermediary thin layer (28) having a relatively smooth surface. The body (30) and the intermediary layer (28) are made respectively by sintering with fine and ultra-fine Inconel grains. A rigid metallic axial structure (32) is embedded in the body (30). Veinlets (31), which are made in the body (30) through the destruction of thermo-destructible wires during sintering, increase the permeability of the substrate. The invention is particularly applicable to hydrogen-producing combustible gas processors.
摘要:
The membrane reactor of the present invention generates a desired gas such as hydrogen produced by steam reforming liquid fuels. The membrane reactor provides thermal integration between the heating source and the reaction catalyst by heat conduction through a solid medium. A gas purification system extracts energy from the waste gases to heat the membrane reactor.
摘要:
An emission control system (18, 118) for injecting oxygen-enriched air into an exhaust system (16, 116) of an engine (10, 110) includes a selectively permeable air separating membrane device (20, 120) that produces the oxygen-enriched air (permeate) as well as nitrogen-enriched air (retentate). The oxygen-enriched air being so produced can be introduced into the exhaust system (16, 116) (a) into an exhaust duct (168) extending from an exhaust manifold (28, 128) of the engine (10, 110), (b) into the exhaust manifold (28, 128) of the engine (10, 110), or (c) into a polluant reducing device (130) that is mounted in line with the exhaust duct (128) of the engine's exhaust system. The nitrogen-enriched air being produced by the permeable membrane device (20) can be used to further reduce NOx by being mixed with air being supplied to an intake manifold (12) of the engine (10) or by being introduced into a plasma device (32) to generate monatomic nitrogen that is injected in the exhaust gases to react with NOx in those gases.
摘要:
A module (214) for separating a product from a mixed stream comprises a mixed stream chamber having inlet and outlet means and defining a first flow path for the mixed stream, a purge/product stream chamber having inlet and outlet means and defining a second flow path for a purge/product stream, the second flow path having a substantially countercurrent direction to that of the first flow path, and a membrane located between the mixed stream chamber and the purge/product stream chamber, the membrane being selectively permeable to the product. There is also disclosed a fuel cell system comprising a burner module (210) for mixing and combusting a fuel and air mixture to produce hydrogen rich fuel stream; a hydrogen fuel cell (250) for producing power/energy using the hydrogen fuel produced by the burner module; a hydrogen purification module (214) between the burner module and the fuel cell for extracting hydrogen fuel from the burner module for use in the fuel cell and that uses a purge gas to enhance purification module performance; hydrogen storage means (254) for storing hydrogen fuel produced by the burner module and not immediately required by the fuel cell; and means for feeding stored hydrogen fuel from the storage means to the fuel cell when the hydrogen requirements of the fuel cell are greater than the amount of hydrogen produced in the burner module.
摘要:
The invention relates to a membrane module and a method for treating specific substances in a fluid, wherein the membrane module contains a housing (1) with a bundle of hollow fiber membranes (2) and a semi-permeable porous wall. The hollow fiber membranes are embedded in an embedding compound (4) on one end only (3) and can be substantially and freely cross-flown at their second end (5). The lumens (10) of the hollow fiber membranes (2) are open at the non-embedded second end (5) and lead to the outside area (10) surrounding the hollow fiber membrane (10). The fluid which is to be treated (6) is introduced by means of an inlet device (7) to one of the two sides (inner or outer sides) of the hollow fiber membranes (2) only and passes by this side as a primary flux so that one part thereof flows through the wall to the other side as a permeate flux enabling the specific substances in the permeate flux to be treated. The permeate flux is collected on the other side when it has flown out of the wall and is re-introduced in the outer area (10) with the primary flux. The flux of the treated fluid (12) emanating from the primary flux and the permeate flux is finally evacuated from the housing (1) by means of an outlet device.