Air Liquide Process and Construction, Inc. Patent applications |
Patent application number | Title | Published |
20130036723 | OXY-COMBUSTION GAS TURBINE HYBRID - An integrated oxy-combustion power generation process is provided. This process includes providing an air separation unit for producing at least an oxygen-enriched stream, providing a carbon dioxide recycle stream, which is combined with the oxygen-enriched stream thereby producing a synthetic air stream, providing a gas turbine comprising a gas inlet , a combustor, and a gas outlet, wherein the synthetic air stream is introduced into the gas inlet, providing a fuel stream to the combustor, thereby producing a power output, and a hot exhaust gas stream, which exits the gas outlet, introducing the exhaust gas stream, along with a boiler feed water stream, into a heat recovery steam generator, thereby producing a steam stream and a cooled exhaust gas stream, and separating the cooled exhaust gas stream into an enriched carbon dioxide product stream and the carbon dioxide recycle stream. | 02-14-2013 |
20120141364 | Coiled Reformer Catalyst Tube For Compact Reformer - A method for producing a chemical reaction is provided. This method includes providing at least two helical tubes, wherein the helical tubes comprise: a first axis and a second axis; wherein the first axis and the second axis are normal to each other; a cross-sectional shape of a predetermined contour; and an inlet end and an outlet end. The method includes reforming a first gas stream and a second gas stream into a third gas stream in the presence of a catalyst. The method includes surrounding a heat source with the helical tubes are, and operating the tube with an average catalyst temperature of above 500 F. An apparatus for producing a chemical reaction is also provided. This apparatus comprises at least two helical tubes, wherein the helical tubes comprise: a first axis and a second axis; wherein the first axis and the second axis are normal to each other; a cross-sectional shape of a predetermined contour; an inlet end and an outlet end, wherein the helical tubes contain a catalyst capable of reforming a first gas stream and a second gas stream into a third gas stream. The helical tubes are designed to surround a heat source, and the tube operates with an average catalyst temperature of above 500 F. | 06-07-2012 |
20120034138 | Coiled Convective Heating For Membrane Reactor - A reactor vessel for subjecting a first gas and a second gas to a chemical reaction to produce a third gas is provided. The reactor vessel includes a catalyst bed, an inlet for receiving the first gas and the second gas, and a first outlet for discharging the third gas. The first outlet includes a selective microporous conduit to separate the third gas from products of incomplete reaction or unreacted first gas and unreacted second gas. A second outlet for discharging one or more of the following: unseparated third gas is also included in this invention. The products of incomplete reaction, unreacted first gas, or unreacted second gas are removed from the system. At least one helical tube is disposed within the reactor vessel and in direct contact with the catalyst bed. The helical tube has an inlet end communicating with a hot gas source, and an outlet end exhausting cooled gas. Indirect heat exchange between the helical tube and the first and second gas, promoted by the catalyst, generates the third gas. | 02-09-2012 |
20110146344 | Process And Apparatus For The Separation Of Air By Cryogenic Distillation - In a process for the production of nitrogen and of oxygen enriched liquid by separation of air by cryogenic distillation, a first stream of air is sent to an exchanger to form a first cooled air stream, the first cooled air stream is sent to a bottom reboiler of a column, condensed air is sent from the bottom reboiler to a top condenser of the column, vaporized air is sent from the top condenser to a first compressor, air is sent from the first compressor to the column, air is sent to a second compressor and from the second compressor to the exchanger to produce a cooled second air stream, the cooled second air stream is sent to a first turboexpander and from the turbo expander to the column, bottom liquid is removed from the column and gaseous nitrogen is removed from the top of the column. | 06-23-2011 |
20110146343 | Process And Apparatus For The Separation Of Air By Cryogenic Distillation - A process for the cryogenic separation of air using a multiple column distillation system comprising at least a higher pressure column (“HP column”) and a lower pressure column (“LP column”), comprising: feeding cooled feed air to the high pressure column for separation into high pressure nitrogen-enriched overhead vapor and crude liquid oxygen; feeding at least one low pressure column feed stream comprising nitrogen and oxygen to the low pressure column for separation into nitrogen-rich overhead vapor and liquid oxygen; refluxing the low pressure column with a liquid stream from or derived from the high pressure column; feeding expanded air to an auxiliary separation column for separation into auxiliary column nitrogen-rich overhead vapor and oxygen-rich liquid and removing the nitrogen rich overhead vapour as a product stream; feeding bottom liquid from the auxiliary column to an intermediate location of the low pressure column; and refluxing the auxiliary column with a nitrogen rich liquid stream from or derived from the HP column. | 06-23-2011 |
20110104045 | Hydrogen Production With CO2 Capture - A method of hydrogen production including producing a syngas stream in an SMR and removing CO2 and H2 from the syngas stream in a CO2 removal unit, thereby producing a residue fuel stream is provided. The method also includes blending the residue fuel stream with a make-up fuel stream, thereby producing a blended fuel stream, and heating the blended fuel stream, thereby producing a heated blended fuel stream. The method also includes blending the heated blended fuel stream with a steam stream, thereby producing a raw reformer fuel stream, and introducing the raw reformer fuel stream into a LP reformer, thereby producing a reformer fuel stream. The method also includes combusting the reformer fuel stream to the SMR, thereby producing a flue gas that is essentially free of CO2. | 05-05-2011 |
20110100214 | PSA Tail Gas Preheating - A process for improving the thermodynamic efficiency of a hydrogen generation system is provided. This includes producing a syngas stream in a reformer, wherein the reformer has a combustion zone. This also includes introducing a syngas stream into a pressure swing adsorption unit, thereby producing a product hydrogen stream and a tail gas stream. This also includes heating the tail gas stream by indirect heat exchange with a heat source, thereby producing a heated tail gas stream; and introducing the heated tail gas stream into the combustion zone. | 05-05-2011 |
20110073809 | Reduction Of CO2 Emissions From A Steam Methane Reformer And/Or Autothermal Reformer Using H2 As A Fuel - A process for reducing carbon dioxide emissions from a reforming process is provided. This method includes producing a hot crude syngas stream in a reformer; indirectly exchanging heat between the hot crude syngas stream and a process stream, thereby generating a cool crude syngas stream; and introducing the cool crude syngas stream into a first separation means, thereby producing a syngas stream and a fuel hydrogen stream. The present invention also includes introducing the syngas stream into a second separation means, thereby producing a product syngas stream, and a carbon dioxide rich stream; blending the fuel hydrogen stream with a hydrocarbon stream, thereby producing a blended fuel stream; and introducing the blended fuel stream into a reformer, thereby generating an exhaust stream that has a lower percentage of carbon dioxide than it would without the introduction of the fuel hydrogen stream. | 03-31-2011 |
20100224061 | Process and Apparatus For CO2 Recovery From Flue Gas With Thermocompression - A process for the recovery of CO | 09-09-2010 |
20100139208 | Hybrid Method Of Erecting A Cold Box Using Prefabricated And Field Erected Components - A method of erecting a cold box that includes the steps of anchoring at least one column to a foundation in a substantially vertical orientation; anchoring a pipe rack module to the foundation in a substantially vertical orientation, wherein the pipe rack module is in close proximity to the at least one column; attaching interconnecting piping between the pipe rack module and the at least one column; anchoring at least four corner beams to the edge of the foundation in a substantially vertical orientation; attaching prefabricated panels with bracing to the corner beams, to form an enclosure around the column and piping; and attaching a roof to the enclose is provided. | 06-10-2010 |
20100104499 | Zero Steam Export With CO2 Recovery In A High Thermal Efficiency Hydrogen Plant - A high thermal efficiency process for hydrogen recovery is provided. The present invention includes combusting a first fuel stream to a reforming furnace, producing reforming heat and a hot exhaust stream. Then exchanging heat indirectly between the hot exhaust stream and a first feed water stream, producing a first steam stream. Then providing a hydrocarbon containing stream and a feed steam stream to the reforming furnace, utilizing the reforming heat and producing a hot raw syngas stream. Then exchanging heat indirectly between the hot raw syngas stream and second feedwater stream, producing a second steam stream and a cooled, raw syngas stream. Then introducing the cooled, raw syngas stream to a CO shift converter, producing a shifted syngas stream. Then introducing the shifted syngas stream into a pressure swing adsorption unit, producing a hydrogen product stream and a tail gas stream. Then introducing the tail gas stream to a CO2 removal unit, producing a CO2 stream and a recycle stream; compressing the recycle stream, producing a compressed recycle stream. Then combining the compressed recycle stream with at least one stream selected from the group consisting of the hydrocarbon containing stream, the cooled raw syngas stream, the shifted syngas stream, and the tail gas stream. Then combining the first steam stream and the second steam stream, producing the feed steam stream. | 04-29-2010 |
20100037655 | Hydrogen Recovery From A Mixture Of Hydrogen and Hydrocarbons At Low Pressure And Of Low Hydrogen Content - A method for recovering hydrogen from a gas stream is presented. This method includes introducing a feed gas stream comprising hydrogen and methane to a first cold box, thereby producing a first hydrogen-enriched stream, and a first methane-enriched stream; then introducing the first hydrogen-enriched stream to a first feed compressor, thereby producing a compressed first hydrogen-enriched stream. The method includes introducing the compressed first hydrogen-enriched stream to a second cold box, thereby producing a second hydrogen-enriched stream, and a second methane-enriched stream; then introducing the second hydrogen-enriched stream to a second feed compressor, thereby producing a compressed second hydrogen-enriched stream. The method includes introducing the compressed second hydrogen-enriched stream to a third cold box, thereby producing a third hydrogen-enriched stream, and a third methane-enriched stream. This method includes introducing the third hydrogen-enriched stream to a third feed compressor, thereby producing a compressed third hydrogen-enriched stream; then introducing the compressed third hydrogen-enriched stream to a PSA, thereby producing a high pressure, high purity hydrogen stream, and a tail gas stream. This method includes introducing a first part of the tail gas stream to a tail gas compressor, and recycling the compressed tail gas back to the feed gas stream; then combining the first methane-enriched stream, the second methane-enriched stream, the third methane-enriched stream, and a second part of the tail gas stream into a fuel stream. And this method includes introducing the fuel stream to a methane compressor. | 02-18-2010 |
20090265988 | Hydrogenation Of Unsaturated Hydrocarbons For Syngas Production - A method of hydrogenation of unsaturated hydrocarbons for syngas production is presented. A hydrogenation feed reactor stream is introduced into a hydrogenation reactor, thereby producing a reformer feed stream. The reformer feed stream is introduced into a reformer, thereby producing a crude syngas stream. The crude syngas stream is introduced into a water gas shift converter, thereby producing a hydrogen-rich stream. The hydrogen-rich stream is separated in a separation means, thereby producing a carbon dioxide-rich stream and a hydrogen product stream. At least a portion of the hydrogen product stream is combined with a refinery fuel gas stream, and a natural gas stream, to form the hydrogenation reactor feed stream. | 10-29-2009 |
20090246004 | Recovery of Expander-Booster Leak Gas - A seal gas recovery method including introducing a first seal gas stream to a first mechanically coupled booster/expander assembly, where the first booster/expander assembly includes a first booster, a first expander, a first shaft that mechanically couples the first booster and the first expander, and a first seal on the first shaft. The method further includes removing at least a portion of a first recoverable gas stream from the first seal, where the first recoverable gas stream includes at least a portion of a first process leak gas stream and at least a portion of a first seal gas vent stream. The method further includes introducing a second seal gas stream to a second expander assembly, where the expander assembly includes a second expander, a second shaft, and a second seal on the second shaft. The method further includes removing at least a portion of a second recoverable gas stream from the second seal, where the second recoverable gas stream includes at least a portion of a second process leak gas stream. The method further includes combining at least a portion of the first recoverable gas stream and at least a portion of the second recoverable gas stream to form a third recoverable gas stream. The method further includes introducing at least a portion of the third recoverable gas stream into the second expander. | 10-01-2009 |
20090242841 | Combustion Air Preheat Optimization System In An SMR - A process for producing synthesis gas from a furnace, the furnace including a combustion air stream, a convective section and a reformer flue gas stream is presented. The furnace may additionally include a process cooling section and one or several boiler feed water stream. This process includes passing the combustion air stream through a preheat exchanger system in the convective section to preheat the combustion air stream in indirect heat exchange with the reformer flue gas, wherein the temperature of the preheated combustion air is between about 200° F. and about 400° F. The temperature of the preheated combustion air may be between about 225° F. and about 350° F. The temperature of the preheated combustion air may be between about 250° F. and about 325° F. The process may further include passing the boiler feed water stream through heating coils in the process cooling section and the convective section. | 10-01-2009 |
20090241551 | Cogeneration of Hydrogen and Power - A process for the integration of power generation and an SMR, including introducing a combustion air stream into a compressor, thereby producing a compressed air stream. The compressed air stream is then introduced, along with a combustor feed gas stream into a first combustor, thereby producing a first exhaust gas stream. The first exhaust gas stream is then introduced into the shell-side of an SMR, thereby providing the heat for the reforming reaction, and generating a syngas stream and a second exhaust gas stream. The second exhaust gas stream is introduced, along with a secondary fuel stream, into a second combustor, thereby producing a third exhaust gas stream. The third exhaust gas stream is then introduced into an expander, thereby producing power output and a fourth exhaust gas stream. | 10-01-2009 |