Air Products and Chemicals, Inc.

Nitin Madhubhai Patel

Eugene S Genkin

Rodney John Allam

Shivaji Sircar

Vladimir Yliy Gershtein

Kevin Boyle Fogash

Shoou-I Wang

David M Nicholas

Joseph P Bushinsky

Gregory David Snyder

Miguel Rafael Alvarez

Stephen Paul Dimartino

A process and apparatus for producing a hydrogen-containing gas in a reformer where a furnace, which is independent of the reformer, heats the effluent from a prereformer prior to reacting the prereformer effluent in the reformer. The prereformer effluent may be heated in a heat exchange tube in the furnace where the heat exchange tube is positioned in the furnace to preclude direct radiation from any flames in the furnace thereby preventing local overheating of the heat exchange tube and preventing carbon formation in the heat exchange tube. Fuel and oxidant gas may be introduced into the furnace with significant excess oxidant gas, having a stoichiometric ratio of 1.8 to 2.8 for controlling the temperature of the heat exchange tube.

Method and apparatus for producing a hydrogen-containing gas

Method for the production of methanol and hydrogen which comprises steam reforming a hydrocarbon-containing feed in a steam reforming zone to yield a synthesis gas comprising hydrogen, carbon monoxide, and carbon dioxide; introducing a first portion of the synthesis gas into a methanol synthesis zone to form methanol; reacting a second portion of the synthesis gas with steam to convert carbon monoxide to hydrogen and carbon dioxide to yield a shifted synthesis gas; cooling the shifted synthesis gas to yield a cooled shifted synthesis gas; separating the cooled shifted synthesis gas into a high-purity hydrogen product stream and a reject stream enriched in carbon dioxide; and introducing some or all of the reject stream into either or both of the steam reforming zone and the methanol synthesis zone.

Co-production of hydrogen and methanol from steam reformate

A process is provided for simultaneously producing a syngas product having a H /CO ratio of less than 2.5 and a hydrogen gas product. The process includes increasing an amount of carbon dioxide being fed to a secondary reformer with carbon dioxide extracted from: (a) an effluent from a primary reformer and (b) an effluent from the secondary reformer. An apparatus for performing the process is also provided.

Co-production of carbon monoxide-rich syngas wth high purity hydrogen

A method is disclosed for producing ammonia synthesis gas by splitting a methane stream, combusting a portion of the methane with steam and oxygen-enriched air, converting a second portion of the methane with steam in a reformation heated by the combustion products of the first portion and combining the two portions for the water gas shift reaction followed by adsorptive separation of contained carbon dioxide.

Production of ammonia synthesis gas

An integrated process for producing higher alcohols, methanol and ammonia is set forth wherein two parallel reformations of methane are utilized to produce synthesis gas for the feed to the alcohol production and hydrogen for the ammonia production.

Process for co-production of higher alcohols, methanol and ammonia

An ammonia synthesis gas mixture comprised of substantially pure hydrogen and nitrogen in approximately 3/1 molar ratio is obtained form two stage reforming of a methane-rich hydrocarbon charge such as natural gas. About 40% of the fresh natural gas is charged to primary steam reforming and the obtained primary reformate product, containing about 17 volume percent of unreacted methane, is mixed with the other 60% of the fresh natural gas and the mixture is subjected to oxidative reforming with enriched air containing 30 to 35 of O.sub.2, said enriched air being supplied in an amount to produce a secondary reformate containing principally hydrogen and nitrogen, accompanied by a minor amount of oxides of carbon (CO and CO.sub.2). The secondary reformate subjected to shift reaction with steam results in conversion of contained CO to CO.sub.2, thereby releasing hydrogen in an amount which together with the hydrogen previously present in said reformate obtains a H.sub.2 /N.sub.2 molar ratio of about 3/1. Carbon dioxide is removed and recovered from the shift reaction product by pressure swing adsorption in a first adsorbent bed. The other contaminants remaining are largely removed by further adsorption in second adsorbent bed in flow-communication with the first bed, the unadsorbed effluent being a syngas mixture consisting essentially of hydrogen and nitrogen in stoichiometric ratio for production of NH.sub.3.

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Allentown, PA, United States of America

Nitin Madhubhai Patel