A process for producing ammonia and a derivative of ammonia from a natural gas feed comprising conversion of natural gas into a make-up synthesis gas; synthesis of ammonia; use of said ammonia to produce said derivative of ammonia, wherein a portion of the natural gas feed is used to fuel a gas engine; power produced by said gas engine; is transferred to at least one power user of the process, such as a compressor; heat is re-covered from exhaust gas of said gas engine; and at least part of said heat may be recovered as low-grade heat available at a temperature not greater than 200 C., to provide process heating to at least one thermal user of the process, such as CO2 removal unit or absorption chiller; a corresponding plant and method of modernization are also disclosed.

A process for producing an ammonia synthesis gas, said process including the steps of: reforming a hydrocarbon feed in a reforming step thereby obtaining a synthesis gas comprising CH.sub.4, CO, CO.sub.2, H.sub.2 and H.sub.2O; and shifting said synthesis gas in a high temperature shift step over a promoted zinc-aluminum oxide based high temperature shift catalyst, wherein the steam/carbon ratio in the reforming step is less than 2.6.

A method and system for producing syngas The method includes providing separate streams of oxygen gas and hydrogen gas, the oxygen gas and the hydrogen gas generated from electrolysis of water. The separate stream of oxygen gas is introduced into a reforming module configured to generate a reformed syngas feed, where the oxygen gas oxidizes natural gas supplied to the reforming module. The separate stream of hydrogen gas and the reformed syngas feed are mixed to adjust a ratio of hydrogen gas to carbon monoxide gas (H.sub.2:CO) to produce a syngas product feed. The system includes a reforming module to receive a stream of oxygen gas, where the oxygen gas oxidizes natural gas supplied to the reforming module to generate a reformed syngas feed. The system includes a mixing module to receive the reformed syngas feed and a stream of hydrogen gas to thereby adjust a ratio of hydrogen gas to carbon monoxide gas (H.sub.2:CO) in a syngas product feed released from the mixing module. The stream of oxygen gas and the stream of hydrogen gas are generated from electrolysis of water.

An ammonia production plant and an ammonia production method having high energy saving and environmental friendliness are provided.

An ammonia production plant of the invention is an ammonia production plant for producing ammonia from a carbon-based raw material, including: an ammonia synthesis facility which synthesizes ammonia; a synthesis gas generating facility which generates a synthesis gas for synthesizing ammonia from the carbon-based raw material; and a power generating facility which obtains power, in which the synthesis gas generating facility includes an exhaust heat recovery unit which recovers exhaust heat generated when generating the synthesis gas, in which the power generating facility includes a combustion device which burns oxygen and fuel and a gas turbine which is driven by using a combustion gas containing a CO.sub.2 gas obtained by the combustion device as power so as to generate power and is configured to supply the CO.sub.2 gas discharged from the gas turbine as a recycle gas to the combustion device, in which the power obtained by the power generating facility is used as at least power of the ammonia synthesis facility, and in which the exhaust heat recovered by the exhaust heat recovery unit is used to heat the recycle gas.

A method of operating a mass spectrometer vacuum interface, the vacuum interface comprising an evacuated expansion chamber downstream of a plasma ion source at atmospheric or relatively high pressure, the expansion chamber having a first aperture that interfaces with the plasma ion source to form an expanding plasma downstream of the first aperture and a second aperture downstream of the first aperture from the plasma for skimming the expanding plasma to form a skimmed expanding plasma; wherein the expansion chamber is pumped by an interface vacuum pump to provide an interface pressure in the chamber; the method comprising using a controller to automatically, or according to user input, control the throughput of the interface vacuum pump to control the interface pressure dependent on one or more operating modes of the spectrometer. A pressure gauge can be located in the expansion chamber and a feedback loop provided between the pressure gauge and controller.

The present invention relates to a revamp method for increasing the front-end capacity of a plant comprising a reforming section, wherein a feed is reformed in at least one reforming step to a reformed stream comprising CH.sub.4, CO, CO.sub.2, H.sub.2 and H.sub.2O a shift section wherein the reformed stream is shifted in a shift reaction in at least a high temperature shift step,
said method comprising the steps of In the High temperature shift step exchanging an original Fe-based catalyst with a non-Fe-based catalyst Increasing the feed flow to the reforming section, and The HTS step is carried out at a reduced steam/dry-gas ratio (S/DG) compared to an original S/DG in the original HTS step with the original Fe-based catalyst.

A process for the combined preparation of methanol and ammonia based on primary steam reforming a hydrocarbon feed stock and adiabatic secondary reforming with oxygen enriched air from electrolysis of water.

The present disclosure provides natural gas and petrochemical processing systems including oxidative coupling of methane reactor systems that integrate process inputs and outputs to cooperatively utilize different inputs and outputs of the various systems in the production of higher hydrocarbons from natural gas and other hydrocarbon feedstocks.

The present disclosure relates to cogeneration of power and one or more chemical entities through operation of a power production cycle and treatment of a stream comprising carbon monoxide and hydrogen. A cogeneration process can include carrying out a power production cycle, providing a heated stream comprising carbon monoxide and hydrogen, cooling the heated stream comprising carbon monoxide and hydrogen against at least one stream in the power production cycle so as to provide heating to the power production cycle, and carrying out at least one purification step so as to provide a purified stream comprising predominately hydrogen. A system for cogeneration of power and one or more chemical products can include a power production unit, a syngas production unit, one or more heat exchange elements configured for exchanging heat from a syngas stream from the syngas production unit to a stream from the power production unit, and at least one purifier element configured to separate the syngas stream into a first stream comprising predominately hydrogen and a second stream.

A process for the co-production of methanol and ammonia is described comprising the steps of: (a) forming a first synthesis gas stream by reacting a first portion of a hydrocarbon feedstock and steam in a steam reformer, (b) forming a second synthesis gas stream in parallel to the first synthesis gas stream by reacting a second portion of the hydrocarbon feedstock with an oxygen-containing gas and steam in an autothermal reformer, (c) synthesising methanol from a first process gas comprising the first synthesis gas stream, and (d) synthesising ammonia from a second process gas prepared from the second synthesis gas stream, wherein a purge stream containing hydrogen is recovered from the methanol synthesis step (c) and a portion of the purge gas stream is fed to the autothermal reformer and/or the second synthesis gas in step (b).