The present invention is directed to a method and system of separating carbon monoxide from syngas mixtures with high methane content by cryogenic means where a partial condensation cycle is generally employed, and more specifically towards combining the methane-rich liquid exiting the distillation column with a lower-boiling mixture so that the boiling point of the combined stream is lower than the boiling point of the methane-rich liquid.

Method for the preparation of ammonia synthesis gas by a combination of ATR or secondary reforming process using oxygen from an air separation unit and electrolysis of water for the production of ammonia synthesis gas.

The present invention is directed to a method of separating carbon monoxide from syngas mixtures by cryogenic means where a partial condensation cycle is generally employed, and more specifically varying refrigeration generation based on income feed composition of the hydrocarbon feedstock being processed.

Process for the combined production of a mixture of hydrogen and nitrogen, and of carbon monoxide by cryogenic distillation and cryogenic scrubbing, wherein a methane-rich liquid is introduced at a first intermediate level of a scrubbing column as first scrubbing liquid and at least one nitrogen-rich liquid is introduced at a level higher than the first level of the scrubbing column as second scrubbing liquid and a mixture of hydrogen and nitrogen is drawn off as overhead gas from the scrubbing column.

Processes for converting a hydrocarbon-containing feed by pyrolysis and gasification/combustion. The hydrocarbon-containing feed and heated particles can be fed into a pyrolysis zone and contacted therein to effect pyrolysis of the hydrocarbons and produce a pyrolysis effluent. A gaseous stream rich in olefins and a particle stream rich in particles that include coke disposed thereon can be obtained from the pyrolysis effluent. A CO.sub.2-rich stream that includes, on a dry basis, CO.sub.2 at a concentration 90 vol %, based on the total volume of the CO.sub.2-rich stream, can be obtained from the gasification/combustion gas mixture.

The present invention is directed to a method and system of separating carbon monoxide from syngas mixtures with low methane content by cryogenic means where a partial condensation cycle is generally employed, and more specifically towards providing a methane slip stream to the feed in order to reduce the potential for any carbon dioxide entering the cold box to freeze, thereby preventing plugging of the cold box heat exchanger.

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.

A method and system for producing liquid air wherein liquid refrigerant is cycled between two core tanks maintained at a temperature sufficient to liquify compressed air passed through condensing tubing in the interior of the core tanks. Liquid refrigerant is cycled by alternating high pressure gas from a high pressure tank to one of the core tanks, which forces liquid refrigerant from this tank through an expansion device to expand a portion of the liquid refrigerant to absorb heat in the other core tank, the resulting refrigerant gas being driven into a low pressure tank. A compression device transfers the refrigerant gas from the low pressure tank to the high pressure tank and maintains the pressure in the high pressure tank. Connections between the low and high pressure tanks and the core tanks are reversed with each cycle.

Processes and for converting a hydrocarbon-containing feed by pyrolysis and gasification/combustion. The hydrocarbon-containing feed can be heated to produce a heated feed that can be separated into a vapor and a liquid. At least a portion of the vapor and/or at least a portion of the liquid and a particle stream can be fed into a pyrolysis zone and contacted therein to effect pyrolysis of the hydrocarbons and produce a pyrolysis effluent.

A hydrogen supply system supplying hydrogen, the hydrogen supply system including: a dehydrogenation reaction unit acquiring a hydrogen-containing gas by performing a dehydrogenation reaction of a raw material containing a hydride; and a control unit controlling the hydrogen supply system, in which in a case in which generation of the hydrogen-containing gas in the dehydrogenation reaction unit stops, the control unit causes the hydrogen supply unit to supply hydrogen to the dehydrogenation reaction unit, and the hydrogen supply unit supplies at least one of the hydrogen-containing gas between the dehydrogenation reaction unit and a vapor-liquid separating unit separating a dehydrogenation product from the hydrogen-containing gas and the hydrogen-containing gas separated by the vapor-liquid separating unit separating a dehydrogenation product from the hydrogen-containing gas to the dehydrogenation reaction unit.