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8088336 Reducing gas generator and solid reductant SCR system having the generator  
A reducing gas generator generates reducing gas including ammonia. The generator includes a solid reductant and a heat-generating portion. The solid reductant is formed in a columnar shape. A...
7915017 Process for the treatment of lignocellulosic biomass  
A process for the treatment of biomass to render structural carbohydrates more accessible and/or digestible using concentrated ammonium hydroxide with or without anhydrous ammonia addition, is...
7867460 Efficiency of ammonia processes  
Systems and methods for producing ammonia. The system can include a first shell having two or more discrete catalyst beds disposed therein, a second shell disposed about the first shell, a first...
7803329 Apparatus and methods for the production of ammonia and fischer-tropsch liquids  
A gasification plant and methods for producing ammonia, Fischer-Tropsch fuels, electrical power, and/or sulfur from carbon-bearing feedstocks including coal and/or petroleum coke. Methods for...
7803331 Isothermal chemical reactor  
The present invention concerns an isothermal reactor (1) comprising a substantially cylindrical shell (2), at least one catalytic bed (10) supported in the shell (2) and at least one heat exchange...
7727493 Plate-type heat exchanger  
A plate-shaped heat exchanger (20, 120) for a heat exchange unit (40) of a chemical reactor (60), that advantageously presents a thermal insulation obtained in an unusually simple and reliable...
7708966 Systems and methods for on-site selective catalytic reduction  
A selective catalytic reduction (SCR) system includes an on-board ammonia generation system that produces nitrogen from air and hydrogen from a source of a hydrogen-containing compound, and...
7645428 Temperature controlled reaction vessel  
A reaction vessel which includes internally placed temperature controlling mixing baffles in which liquid is boiled, resulting in an isothermal heat sink. The energy of vaporization is supplied by...
7641881 Fertilizer production from fossil fuel with minimal carbon dioxide emission  
An ammonia and fertilizer production process is based on partial oxidation of fossil fuel, which co-produces polycarbonsuboxide. The four step process is low-cost and low-carbon-dioxide emission....
7517373 Reformer  
A device to reform a raw material gas into a synthesis gas rich in hydrogen and carbon monoxide is disclosed. The device includes a vessel, a floating head, a plurality of reaction tubes, inlets...
7402292 Device and methods of ammonia generation for NOx abatement  
One embodiment of a method of operating a NOx abatement system comprises: introducing an exhaust stream to an ammonia generator in a normal flow direction, adsorbing NOx from the exhaust stream in...
7371361 Maximum reaction rate converter system for exothermic reactions  
An ammonia converter system and method are disclosed. The reactor can alter the conversion of ammonia by controlling the reaction temperature of the exothermic reaction along the length of the...
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...
7294313 Device and method for producing ammonia from solid urea pellets  
A device for producing ammonia from urea pellets includes a pellet dispensing device, a pellet accelerator, a pellet shooting channel, and an ammonia reactor having a chamber or zone for shooting...
7279138 Horizontal chemical reactor, in particular for methanol synthesis  
A horizontal chemical reactor comprises at least one catalytic bed (5a-5d) arranged horizontally in the reactor and comprising a lower gas-permeable wall (6) for gas outlet, and a holding element...
7081230 Split-flow, vertical ammonia converter  
A vertical, fixed-bed ammonia converter wherein a fixed-bed catalyst zone is configured into two mechanically separated catalyst volumes and two gas streams that operate in parallel. The design...
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...
6955797 Process for the preparation of ammonia  
Process for the preparation of ammonia comprising steps of contacting an ammonia synthesis gas with an ammonia synthesis catalyst arranged as reaction zone in one or more catalyst tubes;cooling the...
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 to a...
6696026 Process for combined production of ammonia and urea  
A process for the combined production of ammonia and urea of the type comprising an ammonia synthesis reactor (2), a urea synthesis reactor (5) and a urea recovery section (21) stands out for the...
6616901 Apparatus for pollution control in exhaust gas streams from fossil fuel burning facilities  
This invention relates to pollution control requirements for fossil fuel burning facilities such as power plants, and, more particularly, to an apparatus for providing a safe and economical supply...
6540971 Process and reactor for the preparation of ammonia  
Process and reactor for the preparation of ammonia at elevated pressure and temperature in an ammonia reactor, wherein a process stream of ammonia synthesis gas is successively passed through at...
6482382 Process and converter for the preparation of ammonia  
Process for the preparation of ammonia, wherein three separate streams of fresh ammonia synthesis gas are used. The ammonia converter contains at least two catalyst beds connected in series. The...
6299849 Method for in-situ modernization of a heterogeneous exothermic synthesis reactor  
A Method for in-situ modernization of a heterogeneous exothermic synthesis reactor, comprising the steps of providing at least a first and at least a second catalytic bed (12, 13) in an upper (2a)...
6227572 Durable tactile indicia for banknotes/documents and method of making same  
A sheet material, such as a bank note, having tactile indicia therein, the tactility of which is resistant to deterioration and useful for assisting persons with impaired vision to identify one or...
6214296 Method of catalytic reaction carried out near the optimal temperature and an apparatus for the method  
The present invention discloses a method of catalytic reaction operated near the optimal temperature and an apparatus for its embodiment. The catalyst bed in the apparatus consists of two parts of...
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...
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...
6132687 Horizontal ammonia converter adapted for high activity catalyst  
A method for modifying a standard two-bed horizontal ammonia converter to provide increased conversion and/or production capacity by placing the first secondary catalyst bed of the existing...
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...
6096195 Process and unit for hydrotreating a petroleum feedstock that comprises the cracking of ammonia and the recycling of hydrogen in the unit  
Described in a process for hydrotreating (HDT) a petroleum feedstock (1) that contains sulfur and nitrogen are the catalytic cracking of the ammonia, produced by the hydrotreating process, in a...
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...
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...
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...
5882606 Method of retrofitting a heterogeneous exothermic synthesis reactor  
In a method of modernizing a heterogeneous exothermic synthesis reactor (1) of the type comprising an external shell (2), in which at least one catalytic bed (15, 16, 17) is supported, the...
5779988 Heterogeneous synthesis method and apparatus including wall temperature protection  
Method for the protection of the internal walls of the shell of Braun type converters, transformed into axial-radial reactors with insertion of a cartridge and a cylindrical perforated wall,...
5585074 Method and apparatus for in-situ modernization of a heterogeneous exothermic synthesis reactor, particularly of the so-called kellogg type  
A method for "in-situ" modernization of a reactor for effecting heterogeneous exothermic synthesis reactions, especially of the so-called Kellogg type, including the preliminary step of providing...
5520891 Cross-flow, fixed-bed catalytic reactor  
Disclosed are a fixed-bed, cross-flow catalytic reactor wherein reaction heat can be exchanged against a heat exchange medium circulating indirectly through the catalyst bed, and a catalytic...
5484577 Catalytic hydrocarbon reformer with enhanced internal heat transfer mechanism  
A catalytic hydrocarbon reformer operates at lower temperature and pressure relative to conventional reformers. Convective heat transfer between the hot combustion gas stream and the reactor tube...
5484582 Process for ammonia recovery in ammonia production  
A process and unit for the recovery of ammonia in ammonia production are disclosed. All or a portion of a high pressure liquid ammonia product stream is introduced into a syngas makeup stream to...
5409684 Process and installation for the combined production of synthetic ammonia and pure hydrogen  
Process and apparatus for the combined production of ammonia synthesis gas and pure hydrogen. There is withdrawn (at 21) a flow of synthesis gas which is first treated in a permeation unit (24)...
5352428 High conversion ammonia synthesis  
A process and apparatus are disclosed to achieve high per-pass synthesis conversion of ammonia. A nitrogen/hydrogen synthesis gas mixture is passed sequentially through a plurality of catalyst...
5254316 Reactors for heterogeneous synthesis  
Improved process to convert in situ conventional reactors with four catalytic beds with axial flow and with intermediate quenching (Kellogg reactor), Third and fourth original beds are combined...
5250270 Catalytic reactor bed  
A fixed bed, dual-zone radial flow catalytic reactor is disclosed. In particular, the catalyst bed configuration includes a first freeboard outwardly radial flow catalyst zone in series with a...
5236671 Apparatus for ammonia synthesis  
An apparatus for the synthesis of ammonia having at least two synthesis reactors in series in which two high temperature heat sink tube bundles are combined in a single shell which is close coupled...
5190731 Process and apparatus for exothermic reactions  
A cooled reactor for exothermic catalytic conversion of gaseous materials, e.g. for the oxo synthesis, for the conversion of hydrogen and nitrogen to form ammonia and for the reaction of carbon...
5184386 Method for retrofitting carbon monoxide conversion reactors  
Reactors for the catalytic conversion of carbon monoxide into carbon dioxide are advantageously modified in situ from axial flow reactors into substantially radial flow reactors, and more...
5180570 Integrated process for making methanol and ammonia  
An integrated process for making methanol and ammonia from a hydrocarbon feed stock and air is disclosed. An air separation unit is used to produce substantially pure oxygen and nitrogen gas...
5171543 Reactor for exothermic heterogeneous synthesis reactions  
Synthesis gas is reacted in several catalytic beds having axial-radial or radial flow. Reacted gas is collected at an outlet of a final catalytic bed and is transferred to a reaction heat recovery...
5167933 Heat exchange reforming process and reactor system  
A process and apparatus for steam reforming of hydrocarbons. Heat from a product stream of reformed gas is utilized to supply heat required for endothermic reforming of a process gas of...
Matches 1 - 50 out of 197 1 2 3 4 >