L'air Liquide,societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude

Alexander Roesch

Alain Guillard

Michael A Turney

Joseph T Stroffolino, Iv

Paul Kong

Yufeng Qian

Frank Castillo-Welter

Timm Schuhmann

Pierre-Philippe Guerif

Elise Renou

Tobias Oelmann

Maik Lehmann

Teja Schmid McGuinness

Jasmin Junger

Heon-Yong Poh

Mike Turney

Pierre-Etienne Franc

Kirill Andreev

A method of maintaining a syngas composition ratio during an upset condition, including detecting a reduction in the import carbon dioxide flow rate with a carbon dioxide import stream flow sensor, evaluating the reduction in carbon dioxide flow rate or carbon dioxide pressure in a controller, performing one or more predetermined corrective actions as instructed by the controller. Wherein the predetermined corrective actions are chosen from the following: opening a CO2 import stream flow valve, opening a hydrocarbon and steam stream feed valve, opening a CO2 backup stream control valve, opening a syngas backup letdown valve, and starting a composition adjustment unit.

Carbon dioxide buffer vessel process design

A method including, compressing a first hydrogen stream, and expanding a portion to produce a hydrogen refrigeration stream, cooling a second hydrogen stream thereby producing a cool hydrogen stream, wherein at least a portion of the refrigeration is provided by a nitrogen refrigeration stream, further cooling at least a portion of the cool hydrogen stream thereby producing a cold hydrogen stream, and a warm hydrogen refrigeration stream wherein at least a portion of the refrigeration is provided by the hydrogen refrigeration stream, compressing the warm hydrogen refrigeration stream, mixing the balance of the compressed first hydrogen stream with a high-pressure gaseous nitrogen stream to form an ammonia synthesis gas stream, and wherein the first hydrogen stream and the warm hydrogen refrigeration stream are compressed in the same compressor.

Integration of hydrogen liquefaction with gas processing units

A method of natural gas treatment including introducing a natural gas containing stream into a dryer unit, thereby producing a treated natural gas containing stream. Introducing the treated natural gas containing stream into a nitrogen rejection unit, thereby producing a further treated natural gas stream as a nitrogen rejection unit product. Splitting the nitrogen rejection unit product into at least two portions, introducing the first portion of the further treated natural gas stream into a reformer unit as first part of feed, and introducing a second portion of the further treated natural gas stream into the dryer unit as a regeneration stream, thereby producing a regeneration waste stream. Introducing at least a portion of the regeneration waste stream into the reformer unit as second part of feed.

Method of natural gas pretreatment

A method of co-producing a nitrogen containing stream and a methanol stream, including producing at least an oxygen enriched stream and a nitrogen enriched stream in an air separation unit, introducing at least a portion of the oxygen enriched stream into an oxygen-based reformer, thereby producing a first syngas stream, introducing at least a portion of the first syngas stream into a methanol synthesis reactor, thereby producing at least a hydrogen containing stream and a methanol containing stream, introducing at least a portion of the methanol containing stream into a methanol distillation system, thereby producing a methanol product stream, introducing at least a portion of the nitrogen enriched stream, at least a portion of the first enriched hydrogen containing stream, and at least a portion of the second enriched hydrogen containing stream into an ammonia synthesis reactor, thereby producing an ammonia product stream.

Method for mixing at least two gases

A method for achieving a gas with a variable hydrogen to carbon monoxide ratio in a system including splitting a warm raw syngas stream into a first portion and a second portion, the second portioning having a portion flowrate. Sending the first portion of the warm raw syngas stream a carbon monoxide separator, thereby producing a first hydrogen enriched stream and a carbon monoxide rich stream. Sending the second portion of the warm raw syngas stream to a water/gas shift reactor, thereby producing a shifted syngas stream. Combining the first hydrogen enriched stream and the second hydrogen enriched stream and sending the combined stream to a hydrogen separator, thereby producing a product hydrogen stream having a hydrogen flowrate, and varying the hydrogen flowrate by increasing the portion flowrate.

Method of operating a syngas plant for a wide range of hydrogen and co co-production

A method for improving thermal efficiency of steam production in a steam reforming based syngas plant is provided. In one embodiment, the method can include the steps of: preheating a hydrocarbon feed stream in a first heat exchanger from a first temperature to a second temperature; preheating the hydrocarbon feed stream in a second heat exchanger to a third temperature, wherein the third temperature is greater than the second temperature; introducing the hydrocarbon feed stream in the presence of steam to a steam methane reformer under conditions effective for producing a product stream comprising hydrogen, carbon oxides, and water vapor; and exchanging heat between the product stream and a boiler feed water stream in a third heat exchanger, wherein prior to exchanging heat with the product stream, the boiler feed water stream is used to provide the preheating to the hydrocarbon feed stream in the first heat exchanger.

Method for improving thermal efficiency of steam production

An apparatus for improving thermal efficiency of steam production is provided. In one embodiment, the apparatus can include: a BFW heat exchanger in fluid communication with a hydrocarbon gas source and a boiler feed water source, wherein the BFW heat exchanger is configured to allow for the natural gas stream to exchange heat with the first BFW stream such that the hydrocarbon gas stream is pre-heated within the BFW heat exchanger and the BFW stream is cooled; a syngas production facility in fluid communication with the BFW heat exchanger, wherein the syngas production facility comprises a steam methane reformer (SMR) that is configured to convert natural gas within the hydrocarbon gas stream into a hot product stream comprising hydrogen and carbon monoxide, wherein the SMR comprises a plurality of burners; and a third heat exchanger in fluid communication with the first heat exchanger and the syngas production facility, wherein the third heat exchanger is configured to exchange heat between the hot product stream and the first BFW stream, thereby creating a hot BFW stream and a cooled product stream.

Apparatus for improving thermal efficiency of steam production

The invention relates to a process for producing a converted synthesis gas from a crude synthesis gas comprising the essential synthesis gas constituents of hydrogen (H) and carbon monoxide (CO), wherein the crude synthesis gas is initially generated in a synthesis gas generation stage and subsequently converted in a multi-stage CO conversion and thus elevated in terms of its hydrogen content. The crude synthesis gas has steam added to it as a reaction partner for the CO conversion and cooling of the converted synthesis gas affords an aqueous condensate.

Process and plant for producing a converted synthesis gas

A method of co-producing a carbon dioxide containing stream and a syngas stream, including introducing a high-pressure hydrocarbon containing stream and a high-pressure oxygen containing stream into a syngas generator, thereby producing a high-pressure syngas stream, introducing a low-pressure hydrocarbon containing stream and a low-pressure oxygen containing stream into an oxy-combustion device, thereby producing a low-pressure carbon dioxide containing stream, and introducing the low-pressure carbon dioxide containing stream into a waste heat boiler, thereby producing steam, and introducing the steam into a work expander, thereby generating work and a carbon dioxide containing stream.

Process for integrating a partial oxidation plant with an oxy-combustion plant utilizing a steam turbine

The method for producing liquid hydrogen can include the steps of: introducing pressurized natural gas from a high pressure natural gas pipeline to a gas processing unit under conditions effective for producing a purified hydrogen stream; and introducing the purified hydrogen stream to a hydrogen liquefaction unit under conditions effective to produce a liquid hydrogen stream, wherein the hydrogen liquefaction unit provides a warm temperature cooling and a cold temperature cooling to the purified hydrogen stream, wherein the warm temperature cooling is provided by utilizing letdown energy of a pressurized stream selected from the group consisting of a nitrogen stream sourced from a nitrogen pipeline, a natural gas stream sourced from the high pressure natural gas pipeline, an air gas sourced from an air separation unit, and combinations thereof, wherein the cold temperature is provided by utilizing letdown energy of the purified hydrogen stream.

Integration of industrial gas site with liquid hydrogen production

A method for maximizing the value of gas streams containing carbon dioxide, carbon monoxide, and hydrogen including splitting a carbon dioxide, carbon monoxide, and hydrogen containing stream into a first fraction and a second fraction, introducing at least a portion of a scrubbed first fraction into a temperature swing adsorption unit to further remove carbon dioxide and to remove water, separating at least a portion of the scrubbed and dried first fraction to produce a carbon monoxide product stream and a hydrogen product stream, combining at least a portion of the hydrogen product stream and the second fraction to produce a methanol-synthesis gas stream, wherein at least a portion of a crude methanol stream, generated after a single pass through the methanol synthesis reactor, is withdrawn and used as a crude methanol product, and wherein the methanol-synthesis gas stream is produced without utilizing a water gas shift reaction.

Method for maximizing the value of gas streams containing carbon monoxide, carbon dioxide, and hydrogen

An integrated method for the production of liquefied natural gas (LNG) and syngas is provided. The method can include the steps of: utilizing letdown energy of a high pressure natural gas stream that is withdrawn from a natural gas pipeline to provide a warm temperature cooling; utilizing a refrigeration cycle to provide a cold temperature cooling, wherein the refrigeration cycle comprises a refrigerant recycle compressor that is powered utilizing a steam turbine; and cooling a second high pressure natural gas stream using the warm temperature cooling and the cold temperature cooling to produce an LNG product stream. The second high pressure natural gas stream is withdrawn from the natural gas pipeline, and the steam turbine is powered by high pressure steam that is produced from a syngas production facility.

Method for the integration of liquefied natural gas and syngas production

A method for the liquefaction of an industrial gas by integration of a methanol plant and an air separation unit (ASU) is provided. The method can include the steps of: (a) providing a pressurized natural gas stream, a pressurized purge gas stream originating from a methanol plant, and a pressurized air gas stream comprising an air gas originating from the ASU; (b) expanding three different pressurized gases to produce three cooled streams, wherein the three different pressurized gases are the pressurized natural gas stream, the pressurized purge gas stream, and the pressurized air gas stream; and (c) liquefying the industrial gas in a liquefaction unit against the three cooled streams to produce a liquefied industrial gas stream. The industrial gas to be liquefied is selected from the group consisting of a first portion of the pressurized natural gas stream, a nitrogen gas stream, hydrogen and combinations thereof.

Method for liquefaction of industrial gas by integration of methanol plant and air separation unit

A method for the liquefaction of an industrial gas by integration of a methanol plant and an air separation unit (ASU) is provided. The method can include the steps of: (a) providing a pressurized natural gas stream, a pressurized purge gas stream composed predominately of hydrogen and originating from a methanol plant, and a pressurized air gas stream comprising an air gas from the ASU; (b) expanding three different pressurized gases to produce three cooled streams, wherein the three different pressurized gases consist of the pressurized natural gas stream, the pressurized purge gas stream, and the pressurized air gas stream; and (c) liquefying the industrial gas in a liquefaction unit against the three cooled streams to produce a liquefied industrial gas stream, wherein the industrial gas to be liquefied is selected from the group consisting of a first portion of the pressurized natural gas stream, a nitrogen gas stream, hydrogen and combinations thereof.

A method for the co-production of hydrogen and methanol including a hydrocarbon reforming or gasification device producing a syngas stream comprising hydrogen, carbon monoxide and carbon dioxide; introducing the syngas stream to a water gas shift reaction thereby converting at least a portion of the CO and H2O into H2 and CO2 contained in a shifted gas stream; cooling the shifted gas stream and condensing and removing the condensed fraction of H2O; then dividing the shifted syngas stream into a first stream and a second stream; introducing the first stream into a first hydrogen separation device, thereby producing a hydrogen stream, and introducing the second stream into a methanol synthesis reactor, thereby producing a crude methanol stream and a methanol synthesis off gas; introducing at least a portion of the methanol synthesis off gas into a second hydrogen separation device.

Growing community of inventors

Katy, TX, United States of America

Alexander Roesch