Abstract: An improved process for the separation of carbon dioxide from the flue gas of an oxy-combustion power plant is provided. An inlet stream containing carbon dioxide and oxygen is at least partially condensed in the reboiler of a stripping column. The condensed inlet stream is then separated in a separator, thereby producing a first liquid stream and a first gas stream. The first liquid stream is then separated into a top gas stream and a bottom liquid stream in the stripping column. The top gas stream is then warmed by indirect heat exchange in the heat exchanger. The warmed top gas stream is then recycled and combined with the inlet stream.

Abstract: A method for generating CO using an off-gas as a source is provided. This method includes providing an off-gas feed stream, wherein said off-gas feed stream comprises CO2 and H2. This method also includes introducing said off-gas feed stream into a reactor, thereby producing an intermediate gas stream comprising CO and H2O. And this method includes separating said intermediate gas stream in a first separation device, thereby producing a product gas stream comprising CO.

Abstract: 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.

Abstract: 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 d

Abstract: 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.

Abstract: 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.

Abstract: A method of hydrogen and methane recovery from syngas from a gasifier is provided. Then directing a raw syngas stream from an acid gas removal system to a CO and methane removal system. Then returning the CO and methane stream to the gasifier, and exporting the hydrogen stream as a product. This method may include exchanging heat between a raw syngas stream from an acid gas removal system, a separated CO and methane stream, a separated hydrogen stream and a liquid nitrogen stream in a heat exchanger. Then directing the cooled raw syngas stream to a cryogenic Then returning the warmed separated CO and methane stream to the gasifier, and exporting the vaporized nitrogen stream as product.

Abstract: A method of high hydrogen recovery from syngas from a gasifier is provided. This method includes providing a syngas stream from the gasifier to first hydrogen separation device, wherein the first hydrogen separation device is a pressure swing adsorption device, thereby producing a first high purity hydrogen stream and a tailgas stream. This method also includes increasing the pressure of the tailgas stream in a first compressor; thereby producing a pressurized tailgas stream. This method also includes providing the pressurized tailgas stream to a second hydrogen separation device, thereby producing a second high purity hydrogen stream and a residue stream. This method also includes directing the residue stream to an auxiliary boiler, and combining the first high purity hydrogen product stream and the second high purity hydrogen product stream, thereby producing a high purity hydrogen product stream.

Abstract: 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.

Abstract: Systems and methods for regasifying liquefied natural gas (LNG) are provided. The LNG is regasified by transferring heat from a steam methane reforming reaction to the LNG. In one embodiment, heat is transferred to the LNG from a synthesis gas produced in a steam methane reforming reaction. In another embodiment, heat is transferred to the LNG from a flue gas provided from a furnace heating a steam methane reforming reactor. By using excess heat from the steam methane reforming process, less energy may be consumed to regasify LNG.

Abstract: A process for the recovery of CO2 from a flue gas is provided. This process includes compressing a flue gas to a first pressure, cooling the flue gas to a first temperature, and drying flue gas by a drying means. This process includes adsorbing CO2 in a first adsorbent bed, wherein the first adsorbent bed is isothermally maintained by a first cooling means. The process includes pressurizing the first adsorbent bed to a second pressure with CO2 at a second temperature, wherein the second pressure is greater than the initial pressure, wherein the second temperature is greater than the initial temperature. The process includes heating the first adsorbent bed to a third temperature with a first heating means, thereby increasing the first adsorbent bed to a third pressure, wherein the third temperature is greater than the second temperature, wherein the third pressure is greater than the second pressure, thereby releasing a first portion of adsorbed CO2.

Abstract: An improved process for the separation of carbon dioxide from the flue gas of an oxy-combustion power plant is provided. At least a first product stream and a second product stream are separated from a flue gas stream, wherein the pressure of the first product stream and the pressure of the second product stream are different. The first product stream is warmed and vaporized. The second product stream is then warmed and vaporized.

Abstract: 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.

Abstract: 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.

Abstract: Methods and systems for producing hydrogen are provided. In one embodiment, a method of producing hydrogen comprises reacting a feed source with steam to produce a gas mixture containing hydrogen and a residue gas; introducing the gas mixture into a purification unit; adsorbing the residue gas; and discharging at least a portion of the hydrogen. The method further comprises depressurizing the purification unit; discharging at least a portion of the residue gas during the depressurization; recycling the residue gas to the feed source; and discharging the residue gas remaining in the purification unit. In another embodiment, the method includes discharging a portion of the residue gas during the depressurization such that the residue gas discharged has a higher hydrocarbon content than the secondary product remaining in the purification unit.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.