The present disclosure relates to a process plant and a process for production of a hydrogen rich gas, comprising the steps of (a) directing an amount of a synthesis gas comprising at least 15%, 50% or 80% on dry basis of CO and H.sub.2 in combination, a gas comprising steam, and a recycled intermediate product gas to be combined into a first reactor feed gas, (b) directing said first reactor feed gas to contact a first material catalytically active in water gas shift reaction, producing an intermediate product gas, (c) splitting said intermediate product gas in the recycled intermediate product gas and a remaining intermediate product gas, (d) combining said remaining intermediate product gas with a further amount of synthesis gas forming a second reactor feed gas, (e) directing said second reactor feed gas to contact a second material catalytically active in the water gas shift reaction, producing a product gas, characterized in the H.sub.2O:CO ratio in said first reactor feed gas being from 0.5 to 2.0 and the H.sub.2O:CO ratio in said second reactor feed gas being from 0.5 to 2.0. with the associated benefit of distributing the heat development and thus reducing the maximum temperature in the reactors by limiting the extent of reaction of the reacting mixture, and thereby reducing the amount of steam required for limiting methanation.

Acid gas compounds are removed from a process gas such as, for example, syngas or natural gas, by flowing a feed gas into a desulfurization unit to remove a substantial fraction of sulfur compounds from the feed gas and flowing the resulting desulfurized gas into a CO.sub.2 removal unit to remove a substantial fraction of CO.sub.2 from the desulfurized gas.

Acid gas compounds are removed from a process gas such as, for example, syngas or natural gas, by flowing a feed gas into a desulfurization unit to remove a substantial fraction of sulfur compounds from the feed gas and flowing the resulting desulfurized gas into a CO.sub.2 removal unit to remove a substantial fraction of CO.sub.2 from the desulfurized gas.

Process and plant for producing a synthesis gas by catalytic steam reforming of a hydrocarbon feedstock in a steam reforming unit, further comprising a first and second shift conversion unit, wherein water is removed from the synthesis gas as a process condensate, wherein boiler feed water is introduced in the process, and wherein said process or plant produces at least two separate steam streams: a pure steam which is generated from at least a portion of said boiler feed water by the cooling of synthesis gas, and a process steam which is generated by evaporating at least a portion of the process condensate in a process condensate boiler (PC-boiler) by using synthesis gas, optionally together with pure steam and/or flue gas from the steam reforming unit. Process steam, and pure steam other than that from the PC boiler, are added to the first shift conversion unit, optionally also to the second second shift conversion unit.

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.

A methanol synthesis plant comprising: a feed pretreating section operable to pretreat a feed stream; a synthesis gas (syngas) generation section comprising one or more reactors operable to produce a syngas synthesis product stream comprising synthesis gas from the feed stream; a methanol synthesis section comprising one or more methanol synthesis reactors operable to produce a synthesis product comprising methanol; and/or a methanol purification section operable to remove at least one component from the synthesis product to provide a purified methanol product; wherein the methanol synthesis plant is configured such that, relative to a conventional methanol synthesis plant, more of the net energy required by the methanol synthesis plant, the feed pretreating section, the syngas generation section, the methanol synthesis section, the methanol purification section, or a combination thereof, is provided by a non-carbon based energy source, a renewable energy source, and/or electricity.

A water gas shift reaction is carried out on a feed gas comprising carbon monoxide to produce carbon dioxide and hydrogen gas. The feed gas is split into multiple input streams flowed into respective reactors coupled in series. Steam is supplied to the input stream fed to the first reactor. The shift reaction is carried out in each reactor, with an overall reduced consumption of steam relative to the amount of gas shifted. The water gas shift reaction may be performed in conjunction with removing acid gas compounds from a process gas such as, for example, syngas or natural gas, by flowing a feed gas into a desulfurization unit to remove a substantial fraction of sulfur compounds from the feed gas and flowing the resulting desulfurized gas into a CO.sub.2 removal unit to remove a substantial fraction of CO.sub.2 from the desulfurized gas.

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.

The present invention relates to a method for obtaining a hydrogen rich gas from a natural gas comprising gas stream. The present invention relates to a system for obtaining a hydrogen rich gas from a gas stream comprising natural gas. The invention can be used in a chemical plant for hydrocarbon synthesis.

Processes and catalysts for producing hydrogen by reforming methane are disclosed, which afford considerable flexibility in terms of the quality of the reformer feed. This can be attributed to the robustness of the noble metal-containing catalysts described herein for use in reforming, such that a number of components commonly present in methane-containing process streams can advantageously be maintained without conventional upgrading (pretreating) steps, thereby improving process economics. This also allows for the reforming of impure reformer feeds, even in relatively small quantities, which may be characterized as complex gas mixtures due to significant quantities of non-methane components. A representative reforming catalyst comprises 1 wt-% Pt and 1 wt-% Rh as noble metals, on a cerium oxide support.