Abstract:
A method of and system for reducing engine environmental atmospheric pollution emissions from a vehicle having a combustion engine utilizing hydrocarbon fuel for at least one of propulsion and auxiliary electrical power is disclosed. The method basically includes providing an unprocessed bulk fuel storage container and a clean processed fuel tank on the vehicle, supplying the engine for propulsion with fuel from the unprocessed fuel storage container when the vehicle is beyond a predetermined distance from an area having environmental restrictions passing a portion of unprocessed fuel through a desulphurization process to fill a clean fuel storage container while the vehicle is in motion and supplying the combustion engine for one of propulsion and auxiliary electrical power from clean fuel in the processed fuel storage container when the vehicle is within an area having environmental restrictions.
Abstract:
A process and system for separating a fuel stream containing a low concentration of sulfur compounds from a primary fuel stream is disclosed. The process includes isolating a stage one permeate stream and a stage one retentate stream from the primary fuel stream, evaporating the stage one permeate stream at a vacuum, and isolating a stage two permeate stream and a stage two retentate stream from the stage one permeate stream. The stage two retentate stream is a fuel stream containing low concentrations of sulfur compounds. The system includes a fuel supply, a stage one separator for separating a fuel stream into a stage one permeate stream and a stage one retentate stream, a stage two separator, a first supply line connecting a portion of the fuel supply to the stage one separator, and a second supply line connecting the stage one separator permeate stream to the stage two separator. The stage two separator isolates the stage one separator permeate stream into a stage two permeate stream and a stage two retentate stream.
Abstract:
A hydrogen generation system is disclosed that includes a fuel reforming reactor generating a hydrogen-rich reformate gas at a temperature greater than 150C, a pressure swing adsorption (PSA) hydrogen purification unit that separates the reformate gas into a relatively pure hydrogen stream and an off-gas stream, and a catalytic reactor down stream of the PSA unit that converts carbon monoxide (CO) and hydrogen (H 2 ) contained in the relatively pure hydrogen stream into methane (CH 4 ) and water vapor (H 2 O). The method of purification involves generating a hydrogen-rich reformate gas at a temperature greater than 150C in a fuel reforming reactor, separating the reformate gas into a relatively pure hydrogen stream and an off-gas stream in a pressure swing adsorption (PSA) hydrogen purification unit, and converting carbon monoxide (CO) and hydrogen (H 2 ) contained in the relatively pure hydrogen stream into methane (CH 4 ) and water vapor (H 2 O) in a catalytic reactor down stream of the PSA unit. The hydrogen can be further purified by including a secondary purification stage downstream of the PSA unit and the catalytic reactor wherein the secondary purification stage has a water adsorbent material bed that adsorbs the water vapor H 2 O and a hydrogen absorbent material downstream of the water absorbent material that absorbs hydrogen gas preferentially, thus concentrating the non-hydrogen components, such as CH 4 , into an exhaust stream that exits the bed, wherein the absorbed hydrogen gas is then desorbed to create an exiting very pure hydrogen stream.
Abstract translation:公开了一种氢气生成系统,其包括在大于150℃的温度下产生富氢重整气体的燃料重整反应器,将重整气体分离成相对纯的氢气流的变压吸附(PSA)氢气净化单元和关闭 气流和PSA单元的下游催化反应器,其将包含在相对纯的氢流中的一氧化碳(CO)和氢(H 2 H 2)转化成甲烷(CH 4) / SUB>)和水蒸气(H 2 O 2)。 纯化方法包括在燃料重整反应器中在大于150℃的温度下产生富氢重整气体,将重整气体分离成相对纯的氢气流和在变压吸附(PSA)氢气净化中的废气流 单元,并将包含在相对纯的氢流中的一氧化碳(CO)和氢(H 2 H 2)转化成甲烷(CH 3/4)和水蒸汽(H 2 S) 2 O)在PSA单元的下游催化反应器中。 可以通过在PSA单元和催化反应器的下游包括二级净化级来进一步纯化氢气,其中二次净化级具有吸附水蒸气H 2 O 2的水吸附剂床和氢 吸收材料下游的吸收材料,优先吸收氢气,从而将非氢组分(例如CH 4)浓缩到离开床的排气流中,其中吸收的氢气是 脱附以产生离开的非常纯的氢气流。
Abstract:
A method and reactor suitable for reformation of fuels at low temperatures is disclosed. The method includes introducing an oxidized porous metal felts with a catalyst powder in a reaction chamber having a heat exchange relationship with a heat- providing chamber, vaporizing a liquid mixture of alcohol and water using an lconel tubing, and introducing the vaporized liquid into the reaction chamber for producing a methane gas. The fuel reforming reactor includes a heat-providing chamber in a heat exchange relationship with at least one reaction chamber. Each reaction chamber having an aluminum shim lining on at least one interior surface. Each reaction chamber accommodating a catalyst powder and an oxidized porous metal felt. The catalyst powder loaded onto the oxidized porous metal felt to facilitate production of methane gas from alcohol for use with the internal combustion engine.
Abstract:
A system for producing an auxiliary fuel stream containing a low concentration of sulfur compounds from a primary fuel stream includes a first separation stage separating the fuel into first vapor permeate and first retentate streams, a first partial condenser connected to the first vapor permeate stream condensing the permeate stream into first liquid and vapor streams, and a second partial condenser condensing a portion of the first vapor stream into a second liquid stage. The permeate stream is preferably sent through a desulfupzation reactor The process includes isolating first vapor permeate and first retentate streams from a primary fuel stream using a first membrane separation stage, condensing a portion of the permeate stream in a condenser into liquid and vapor streams, and passin the vapor stream through a desulfurization reactor and then optionall through a sorbent bed removin sulfur compounds.
Abstract:
A system for producing an auxiliary fuel stream containing a low concentration of sulfur compounds from a primary fuel stream includes a first separation stage to separate a portion of a primary fuel stream into a first vapor permeate stream and a first retentate stream, a first separation stage partial condenser connected to the first vapor permeate stream condensing a portion of the first vapor permeate stream into a first liquid stage stream and a first vapor stage stream, and a second separation stage partial condenser condensing a portion of the first vapor stage stream into a second liquid stage. The first vapor permeate stream is preferable sent through a vapor phase reactive desulfurization catalyst reactor to condition any sulfur compounds present into species that can be easily separated from the fuel stream. The process includes isolating a first vapor permeate stream and a first retentate stream from a primary fuel stream by passing a portion of the primary fuel stream through a first membrane separation stage, condensing a portion of the first vapor permeate stream in a first separation stage partial condenser into a first liquid stage stream and a first vapor stage stream, and passing the first vapor stage stream through a desulfurization reactor. The stream may then be processed through a sorbent bed to effectively remove the sulfur compounds.
Abstract:
A hydrogen generation system is disclosed that has a vaporization section receiving and vaporizing fuel along with water and passing the vapor to a reformer catalyst section heated by a combustor section which generates reformate gas and is fueled by off-gas from a H2 purification unit along with a combustion air source. The off-gas outlet feeds the combustor section in the reformer assembly to heat the catalyst section and the vaporization section. An H2 storage unit connected to the H2 purification unit pure H2 outlet receives the pure H2. The storage unit has an outlet selectively connectable to the reformer assembly process inlet during startup without the need for a spark igniter. The startup process includes generating heat in the combustor section of the reformer assembly by passing H2 from the H2 storage unit through the vaporization section, the reformer catalyst section, the H2 purification unit and through the off-gas connection to the combustor section, then introducing water and fuel through the vaporization section and reformer catalyst section to generate reformate gas when the system is warmed, passing the reformate gas through the H2 purification unit to the off-gas connection to the combustor section, and establishing a back pressure on the reformer catalyst section and vaporizer section to decrease the hydrogen flow from the H2 storage unit until the system is fully sustainable without addition of H2 from the H2 storage unit.
Abstract:
Disclosed are reformer designs for reforming an alcohol to a gaseous reformate mixture comprising hydrogen for combustion in an engine. Also disclosed is a catalyst assembly for reforming an alcohol to a gaseous reformate mixture comprising hydrogen for combustion in an engine. The catalyst assembly includes a thermally-conductive, porous catalyst substrate, and an unpassivated, copper-nickel powder catalyst loaded on the substrate for reforming alcohol to the gaseous reformate mixture comprising hydrogen.
Abstract:
A steam reformer may comprise fluid inlet and outlet connections and have a substantially cylindrical geometry divided into reforming segments and reforming compartments extending longitudinally within the reformer, each being in fluid communication. With the fluid inlets and outlets. Further, methods for generating hydrogen may comprise steam reformation and material adsorption in one operation followed by regeneration of adsorbers in another operation. Cathode off-gas from a fuel cell may be used to regenerate and sweep the adsorbers, and the operations may cycle among a plurality of adsorption enhanced reformers to provide a continuous flow of hydrogen.
Abstract:
A system (600) for producing an auxiliary fuel stream (616) containing low concentration ofsulfur compounds from a primary fuel stream (610) includes a first separation stage (604) to separate a portion of a primary fuel stream (610) into a first vapor permeate stream (611) and a first retentate stream (617), a first separation stage partial condenser (603) connected to the first vapor permeate stream condensing a portion of the first vapor permeate stream into a first liquid stage stream (618) and a first vapor stage stream (612), and a second separation stage partial condenser condensing a portion of the first vapor stage stream into a second liquid stage. The first vapor permeate stream is preferably sent through a vapor phase reactive desulfurization catalyst reactor (607) to condition any sulfur compounds present into species that can be easily separated from the fuel'stream. The process includes isolating a first vapor permeate stream (611) and a first retentate stream (617) from a primary fuel stream by passing a portion (610) of the primary fuel stream through a first membrane separation stage (604), condensing a portion of the first vapor permeate stream in a first separation stage partial condenser (603) into a first liquid stage stream (618) and a first vapor stage stream (612), and passing the first vapor stage stream through a desulfurization reactor (607). The stream may then be processed through a sorbent bed (608) to effectively remove the sulfur compounds.