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7547428 |
Method for producing ammonia from methanol
Ammonia is catalytically produced from a nitrogen-hydrogen mixture. First of all, a vaporous feed mixture, which comprises 30 to 60 vol-% methanol and 40 to 70 vol-% steam and has a volume ratio...
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7521483 |
Coproduction of methanol and ammonia from natural gas
The invention relates to a method for the coproduction of methanol and ammonia from natural gas involving the following steps: 1. Natural gas (flow 1 ) , steam and oxygen are mixed with one...
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7514058 |
Apparatus for on-site production of nitrate ions
An apparatus and method produces nitrate ions on-site from water, natural gas and air extracted in proximity to the apparatus. The apparatus generates nitrate ions and brings the nitrate ions into...
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7513919 |
Pseudoisothermal ammonia process
Ammonia is produced in a reactor in which pseudoisothermal conditions can be approached by convective cooling of a reaction zone of the reactor by positioning at least a portion of the reaction...
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7470415 |
Method for producing ammonia on the basis of a nitrogen-hydrogen mixture from natural gas
A method for producing ammonia from natural gas, fed to an autothermic reformer with an O 2 rich gas. Crude synthesis gas is produced at temperatures of 900 to 1200° C., pressures of 40 to 100...
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7431865 |
Production of ammonia synthesis gas
Ammonia synthesis gas production having a shift reaction stage employing a copper-based catalyst wherein the air supplied to the process is passed through an absorber that removes sulfur and/or...
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7371313 |
On-site generation, purification, and distribution of ultra-pure anhydrous ammonia
A system and method for generating, purifying, and using ultra-pure ammonia on-site, such as at a semiconductor manufacturing facility. The system includes an ammonia generation system configured...
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7300642 |
Process for the production of ammonia and Fischer-Tropsch liquids
A gasification plant for producing ammonia, Fischer-Tropsch fuels, and electrical power from carbon-bearing feedstocks.
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7297324 |
Microchannel reactors with temperature control
Microchannel devices and method of use are disclosed wherein a reaction microchamber 52 is in thermal contact with a heat exchange channel 61 . An equilibrium limited exothermic chemical process...
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7279138 |
Horizontal chemical reactor, in particular for methanol synthesis
A horizontal chemical reactor comprises at least one catalytic bed ( 5 a - 5 d ) arranged horizontally in the reactor and comprising a lower gas-permeable wall ( 6 ) for gas outlet, and a holding...
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7250150 |
Chemical reactor with pressure swing adsorption
A chemical reaction is performed with separation of the product(s) and reactant(s) by pressure swing adsorption (PSA), using an apparatus having a plurality of adsorbers cooperating with first and...
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7183326 |
Installation and method for producing and disaggregating synthesis gases from natural gas
What is described is a method and an installation for the simultaneous production of methanol synthesis gas, ammonia synthesis gas, carbon monoxide and carbon dioxide from natural gas, in which...
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7094384 |
Combined methane decomposition and ammonia formation cell
An ammonia synthesis process and apparatus are provided which are energy efficient and minimize greenhouse-gas-emission during the processing of natural gas and air. In the process a stream of...
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7090816 |
Low-delta P purifier for nitrogen, methane, and argon removal from syngas
A process for manufacturing ammonia from syngas with excess air for reforming and nitrogen removal with low pressure losses is disclosed. Auto-refrigeration for cooling the syngas for cryogenic...
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7078130 |
Metallic mesoporous transition metal oxide molecular sieves, room temperature activation of dinitrogen and ammonia production
This invention provides novel stable metallic mesoporous transition metal oxide molecular sieves and methods for their production. The sieves have high electrical conductivity and may be used as...
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7070750 |
Multiple-pressure process for the production of ammonia
The invention relates to a process for the production of ammonia from synthesis gas, the synthesis of ammonia from synthesis gas taking place in several lined-up synthesis systems, whereby ammonia...
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6986870 |
Combined methane decomposition and ammonia formation cell
An ammonia synthesis process and apparatus are provided which are energy efficient and minimize greenhouse-gas-emission during the processing of natural gas and air. In the process a stream of...
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6900247 |
Natural gas conversion to hydrocarbons and ammonia
A process for the production of hydrocarbons and ammonia, and more particularly a process for optimizing the production of hydrocarbons and ammonia using a combined hydrocarbon synthesis plant and...
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6811762 |
Ammonia synthesis process and apparatus for use therein
A method for synthesis of ammonia includes compressing a synthesis gas containing hydrogen and nitrogen in a multi-stage ( 50, 56 and 57 ) centrifugal compressor. The synthesis gas is compressed...
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6780387 |
Process for the preparation of ammonia
Process for the preparation of ammonia by contacting an ammonia synthesis gas with ammonia catalyst particles arranged in a fixed bed, wherein the fixed bed comprises catalyst particles of the...
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6663681 |
Method for the production of hydrogen and applications thereof
A method for the production of hydrogen gas. The hydrogen gas is formed by steam reduction using a metal/metal oxide couple to remove oxygen from water. Steam is contacted with a molten metal...
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6632846 |
Integrated urea manufacturing plants and processes
A plant for manufacturing urea from carbonaceous materials, oxygen from an air separation unit and water, preferably steam, is made up of a syngas generator unit, an air separation unit,...
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6620399 |
Purification of gases, in synthesis gas production process
A purifier process, includes supplying a first stream of a feed gas containing hydrogen and nitrogen in a MOL ratio of about 2/1, and also containing methane, and argon, then cryogenically...
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6620398 |
Method for the production of ammonia
A method for the production of ammonia. The method includes the reduction of steam using a metal species such as iron or tin to form pure hydrogen gas and the reaction of hydrogen gas with nitrogen...
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6599491 |
Bimodal hydrogen manufacture
The converting of an existing methanol plant to make hydrogen and optionally methanol is disclosed. The converted plant utilizes the steam reformer ( 10 ) to which (a) a hydrocarbon, e.g., natural...
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6586480 |
Integrated process for the production of hydrocarbon liquids and ammonia
Process and economic advantages are achieved by the integration of a Fischer Tropsch process for hydrocarbon liquids production as a retrofit in an installation for the production of ammonia...
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6447437 |
Method for reducing CO2, CO, NOX, and SOx emissions
Industrial combustion facilities are integrated with greenhouse gas-solidifying fertilizer production reactions so that CO 2 , CO, NO x , and SO x emissions can be converted prior to emission into...
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6395243 |
Catalytic or non-catalytic processes with enriched oxygen as a reactant
A method is provided for performing catalytic or non-catalytic processes which uses oxygen supplied from the permeate side of a mixed oxygen ion and electron conducting membrane by means of a sweep...
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6340451 |
Method for the simultaneous modernization of a plant for ammonia production and a plant for urea production
A method for the simultaneous modernization of a plant for ammonia synthesis and a plant for urea synthesis, provides—inter alia—the arrangement of a carbamate synthesis section and a carbamate...
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6333014 |
Process for ammonia and methanol co-production
A process for ammonia and methanol co-production in a plant comprising a secondary reformer section, a high-temperature CO conversion section and a low-temperature CO conversion section, arranged...
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6274767 |
Process for the revamping of urea synthesis plants consisting of a stripper with ammonia
Process for the revamping of urea production plants for the synthesis of ammonia (NH3) and carbon dioxide, with a stripping section with NH3, in which the process carries out with differentiated...
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6248794 |
Integrated process for converting hydrocarbon gas to liquids
The present invention is an integrated process for converting light hydrocarbon gas to heavier hydrocarbon liquids. In each embodiment, a Fischer-Tropsch (FT) process comprising a thermal reformer...
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6214258 |
Feed gas pretreatment in synthesis gas production
An air separation system and a partial oxidation system for the production of synthesis gas are integrated wherein the air separation system provides the oxygen for the partial oxidation process...
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6207078 |
Process for the production of synthesis gas
A process for the production of synthesis gas for obtaining compounds such as ammonia or methanol, in which hydrocarbons and steam are reacted first in a primary reforming section (11) and...
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6197271 |
Catalytic reactor and process for exothermic gas phase reactions
Disclosed is a reactor and process for exothermic vapour phase reaction, wherein the reactor (1; 101) comprises a pressure vessel (2; 102) having an inlet (3;103) for reactant(s) and an outlet (4;...
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6190632 |
Method and apparatus for the production of ammonia utilizing cryogenic rectification
A system for producing ammonia by integrating blast furnace ironmaking with ammonia production wherein cryogenic rectification links the two systems enabling the production of ammonia synthesis gas...
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6171570 |
Isothermal ammonia converter
A vertical tubular reactor for converting ammonia synthesis loop purge gas to ammonia; a method for converting ammonia synthesis loop purge gas to form additional ammonia; and a method for...
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6168425 |
Method for fusion treating a solid waste for gasification
The present invention relates to a method for treating solid wastes such as refuse-derived fuel or biomass wastes by pyrolysis gasification in a fluidized-bed gasification furnace 1, and then...
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6106793 |
Process for the ammonia and methanol co-production
A process for ammonia and methanol co-production in a plant comprising a first primary reforming section (11) and a secondary reforming section (12) arranged in series, an ammonia synthesis section...
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6086840 |
Process for making ammonia from heterogeneous feedstock
Ammonia is made from a carbon-containing heterogeneous feedstock by partially oxidizing the feedstock at low pressure to generate a synthesis gas containing CO; isothermally shift reacting the...
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6077459 |
Process and process unit for the preparation of ammonia synthesis gas
Process and process unit for the preparation of ammonia synthesis gas from a hydrocarbon feedstock comprising sequentially primary and secondary catalytic steam reforming of the feedstock in a...
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6063355 |
Method for treating wastes by gasification
A method of treating wastes includes partially combusting the wastes in a fluidized bed reactor at a relatively low temperature followed by separate gasification of gaseous material and char from...
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6048508 |
Process for obtaining carbon monoxide and hydrogen
The present invention is directed to a process for simultaneously obtaining pure carbon monoxide and pure hydrogen in a steam reformer plant for hydrogen or ammonia generation, having a primary...
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5997834 |
Process for the preparation of ammonia
A process for the preparation of ammonia from a hydrogen- and nitrogen-containing synthesis gas having a combined compression step in the recirculation of synthesis gas from at least two ammonia...
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5942203 |
Process for producing and utilizing an oxygen enriched gas
This invention comprises a method and apparatus for obtaining from air an oxygen enriched gas mixture containing at least 40 mole % nitrogen. The apparatus comprises a gas turbine, an oxygen...
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5935544 |
Moderate excess nitrogen Braun Purifier™ process and method for retrofitting non-Braun Purifier™ ammonia plants
The present invention is a moderate excess nitrogen Braun Purifier™ process, wherein has been found an unexpected improvement in capacity and efficiency of operation of ammonia plants designed...
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5847208 |
Method for increasing the yield and the production potential of urea reactors
Urea is formed by the synthesis of ammonia with carbon dioxide at high pressure and temperature in an internal space of reactors through which flow a liquid phase cocurrently with a gas phase. The...
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5792889 |
Process for urea production involving a carbon dioxide stripping step
An improved process for urea production as well as a method of retrofitting a pre-existing urea plant based on the Stamicarbon process are disclosed. According to the invention, a high-yield...
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5736116 |
Ammonia production with enriched air reforming and nitrogen injection into the synthesis loop
A retrofit method for increasing production capacity of an ammonia plant having a front end including in series primary and secondary reformers and a shift converter for reacting a hydrocarbon...
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5711926 |
Pressure swing adsorption system for ammonia synthesis
The present invention is directed to a catalytic process for the synthesis of ammonia in an ammonia synthesis reactor wherein a dilute ammonia stream is withdrawn from the reactor and subjected to...
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