Class 518/708 - Water utilized

Subclass of Class 518 - Chemistry: fischer-tropsch processes; or purification or recovery of products thereof
Definition: Processes wherein water is utilized in at least one of the
No. of patents: 21
Last issue date: 05/16/2006

Number	Title	Issue Date
7045554	Method for improved Fischer-Tropsch catalyst stability and higher stable syngas conversion The present invention is generally related towards methods for preparing and using a more stable synthesis catalysts. In particular, the present invention is directed towards treating synthesis catalysts with low levels of oxygen to deactivate the smaller more unsta...	05/16/2006
6787576	Linear alpha olefins from natural gas-derived synthesis gas over a nonshifting cobalt catalyst Linear alpha olefins having from four to twenty carbon atoms and low amounts of oxygenates are synthesized, by producing a synthesis gas containing H2 and CO from natural gas and passing it over a non-shifting cobalt catalyst at reaction conditions of tem...	09/07/2004
6706770	Co-production of hydrogen and methanol from steam reformate 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...	03/16/2004
6239184	Extended catalyst life Fischer-Tropsch process A process for extending the life of a Fisher-Tropsch catalyst in a process for converting synthesis gas produced in an autothermal reactor by the substoichiometric oxidation of a light hydrocarbon gas by removing ammonia from the synthesis gas prior to pa...	05/29/2001
6225358	System and method for converting light hydrocarbons to heavier hydrocarbons with improved water disposal A system for converting lighter hydrocarbons to heavier hydrocarbons has a synthesis gas subsystem for receiving air and light hydrocarbons and producing a synthesis gas; a synthesis subsystem for receiving synthesis gas from the synthesis gas subsystem a...	05/01/2001
6011073	System and method for converting light hydrocarbons to heavier hydrocarbons with separation of water into oxygen and hydrogen A system for converting light hydrocarbons to heavier hydrocarbons having a synthesis gas production unit and a hydrocarbon synthesis unit. For one application the synthesis gas production unit includes a turbine unit with a compression section, an autoth...	01/04/2000
4946477	IGCC process with combined methanol synthesis/water gas shift for methanol and electrical power production The present invention relates to an improvement to a process for the production of methanol from synthesis gas containing carbon monoxide and hydrogen utilizing a three phase or liquid-phase reaction technology. The improvement to the process is the addit...	08/07/1990
4525482	Process for producing a gas containing methane This invention provides an improved, simple and energy saving process for producing a gas containing methane, which process utilizes a reactor having a catalyst bed of a structure wherein a synthesis gas is allowed to pass perpendicularly to the longitudi...	06/25/1985
4367206	Method for producing methanol and ammonia A process for producing methanol and ammonia by generating nitrogen-containing synthesis gas, reacting the carbon oxides and hydrogen incompletely to methanol and passing the unreacted gas to ammonia synthesis, is characterized by carrying out the methano...	01/04/1983
4338089	Process for preparation of hydrocarbons A process is disclosed for the preparation of a hydrocarbon mixture by contacting in a first stage a feed mixture of hydrogen and carbon monoxide with an H2 /CO molar ratio of less than 1.0 with a trifunctional catalyst combination containing (...	07/06/1982
4212817	Control of highly exothermic chemical reactions Highly exothermic continuous chemical reactions such as the methanization of carbon oxides are cooled by indirect heat exchange with a liquid coolant such as water, thereby converting at least some of the liquid to a vapor such as steam. When the reaction...	07/15/1980
4133825	Production of substitute natural gas Synthesis gases containing carbon monoxide, eg above 40% volume, and hydrogen are methanated to produce substitute natural gas, after CO2 removal, wherein the synthesis gas is simultaneously saturated with water, further heated and divided into...	01/09/1979
4130575	Process for preparing methane rich gases Hydrogen and carbon oxides are reacted to form methane by passing an inlet stream of preheated methanation synthesis gas together with a recycle stream of product gas through a catalyst bed in an adiabatic methanation reactor. The inlet temperature is bet...	12/19/1978
4124628	Serial adiabatic methanation and steam reforming A process for the production of methane from a reactant gas comprising H2 and CO employing at least two primary, fixed bed, adiabatic, catalytic reactors in serial arrangement wherein a first feed stream comprised of steam and said reactant gas...	11/07/1978
4123448	Adiabatic reactor An improved adiabatic reactor for exothermic catalytic reactions is disclosed. The improvement in the reactor comprises the use of multiple injection devices to inject additional reactant streams into the reactor at a plurality of locations at which the r...	10/31/1978
4105591	Method of preparing and filtering coprecipitated nickel-alumina catalysts A catalyst suitable for the high pressure gasification of heavy hydrocarbons to produce methane-containing gases is a calcined coprecipitated-alumina containing from 50- 65% Ni on a calcined unreduced basis. The catalyst contains (1) from 0 to not more th...	08/08/1978
4091008	Production of a gas rich in methane In a process for the production of a methane-rich gas from a feed gas of hydrogen and carbon oxides, wherein the feed gas, after preliminary purification thereof, is warmed, then subjected to a multistage, catalytic methanization, and thereupon is subject...	05/23/1978
4064156	Methanation of overshifted feed A process for the production of methane from feed gas comprising H2 and CO wherein prior to methanation of feed gas fractions in a series of at least two primary, fixed bed, adiabatic, catalytic reactors, the ratio of H2 to CO in the...	12/20/1977
4017274	Process for the methanation of gases containing high concentration of carbon monoxide This invention relates to a process for the methanation of scrubbed raw gases containing a concentration of carbon monoxide in excess of 3 mole percent and a methane concentration of less than 25 mole percent which comprises reacting a part of the carbon ...	04/12/1977
4005996	Methanation process for the production of an alternate fuel for natural gas A process is provided for the catalytic enrichment of a gas having a low BTU level and which has been derived from the gasification of coal and which has been scrubbed for removal of impurities and for the partial removal of carbon dioxide. The process in...	02/01/1977
3973923	Processes for the production of methane-containing gases A process for the production of a gas having a methane content between 40 and 99% by volume from a gas mixture which contains hydrogen, carbon dioxide, and at least 20% by weight of carbon monoxide which comprises the following steps: A. humidifying the g...	08/10/1976

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Class 518/708 - Water utilized