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| Number | Title | Issue Date |
| 7763225 | Process of catalytic ammoxidation for hydrogen cyanide production A process for the ammoxidation of an alcohol feed, such as methanol, or a nitrile feed, such as propionitrile, or a mixture thereof, to form hydrogen cyanide uses a modified Mn—P catalyst having the following empirical formula: MnaP1 | 07/27/2010 |
| 7429370 | Process for the production of hydrogen cyanide by the BMA process and catalyst for the implementation therefor The invention relates to an improvement to the BMA process for the production of hydrogen cyanide from methane and ammonia in the presence of a platinum-containing catalyst. The problem of sooting, and thus the decrease in activity, of the catalysts can be reduced, ... | 09/30/2008 |
| 7300635 | Catalytic reactor A catalytic reactor comprises a plurality of fluid-impermeable plates defining flow channels between them. Tight fitting within each flow channel is a sheet of corrugated material whose surfaces are coated with catalytic material. At each end of the flow channels ar... | 11/27/2007 |
| 7294325 | Method for the production of hydrocyanic acid by oxidation of nitrogen-containing hydrocarbons in a flame A process is described for preparing hydrogen cyanide by autothermal noncatalytic oxidation of one or more nitrogenous hydrocarbons or a nitrogenous hydrocarbon mixture in which the nitrogenous hydrocarbons, an oxygen-containing gas, with or without ammonia, with or... | 11/13/2007 |
| 7255845 | Process for conducting an equilibrium limited chemical reaction in a single stage process channel This invention relates to a process for conducting an equilibrium limited chemical reaction in a single stage process channel. A process for conducting a water shift reaction is disclosed. A multichannel reactor with cross flow heat exchange is disclosed. ... | 08/14/2007 |
| 7101525 | Catalytic device for the implementation of a reaction in a gaseous medium at high temperature The present invention relates to a catalytic device for the implementation of a reaction in a gaseous medium at high temperature, such as, for example, the synthesis of HCN or the oxidation of ammonia, comprising: at least one textured material (1) which is e... | 09/05/2006 |
| 7077643 | Microcombustors, microreformers, and methods for combusting and for reforming fluids The present invention provides microcombustors, microreformers, and methods of steam reforming alcohols over a catalyst. The microcombustors can be manufactured with a very small size and can operate at very low temperature. Surprisingly superior results and propert... | 07/18/2006 |
| 7070743 | Induction-heated reactors for gas phase catalyzed reactions Elevated temperature, gas-phase, catalyzed processes for preparing HCN in which induction heating is used as a source of energy, and novel apparatus for carrying out said processes. ... | 07/04/2006 |
| 7063827 | Process for producing hydrogen cyanide A conical reactor head for use in chemical processes or other systems is provided. The reactor head includes a robust internal insulator to boost efficiency while maintaining safety by allowing the reactor head to self-radiate at high temperatures. The reactor head ... | 06/20/2006 |
| 7000427 | Process for cooling a product in a heat exchanger employing microchannels This invention relates to a process for cooling or liquefying a fluid product (e.g., natural gas) in a heat exchanger, the process comprising: flowing a fluid refrigerant through a set of refrigerant microchannels in the heat exchanger; and flowing the product throu... | 02/21/2006 |
| 6979432 | Hydrogen cyanide synthesis process A process for the production of hydrogen cyanide is provided, wherein hydrogen cyanide is synthesized by reacting methane or methane-containing natural gas, ammonia and oxygen-enriched air or oxygen in the presence of a catalyst comprising platinum or a platinum all... | 12/27/2005 |
| 6969506 | Methods of conducting simultaneous exothermic and endothermic reactions Integrated Combustion Reactors (ICRs) and methods of making ICRs are described in which combustion chambers (or channels) are in direct thermal contact to reaction chambers for an endothermic reaction. Superior results were achieved for combustion chambers which con... | 11/29/2005 |
| 6969505 | Process for conducting an equilibrium limited chemical reaction in a single stage process channel This invention relates to a process for conducting an equilibrium limited chemical reaction in a single stage process channel. A process for conducting a water shift reaction is disclosed. A multichannel reactor with cross flow heat exchange is disclosed. ... | 11/29/2005 |
| 6960333 | High performance heat exchangers Disclosed are means for improving the service-life of indirect tubesheet type heat exchangers used in chemical reactors, particularly those exposed to reducing, nitridizing and/or carburizing environments. Such means include the use of certain ferrules within the he... | 11/01/2005 |
| 6919054 | Reactant nozzles within flowing reactors Improved reaction chamber designs are described that provide for improved control over the flow within the reaction chamber. The reaction chambers contain reactions for particle production from a flowing reactant stream. Improved reactant delivery nozzles are descri... | 07/19/2005 |
| 6913457 | Method and apparatus for optimized CO post-combustion in low NOx combustion processes An improved process for burning a fuel to produce a flue gas is disclosed. The fuel is burned in a main combustion zone in the presence of a main combustion oxidant to produce combustion products. The combustion products are mixed in a post-combustion zone positione... | 07/05/2005 |
| 6743407 | Hydrogen cyanide synthesis process A process for the production of hydrogen cyanide is provided, wherein hydrogen cyanide is synthesized by reacting methane or methane-containing natural gas, ammonia and oxygen-enriched air or oxygen in the presence of a catalyst comprising platinum or a platinum all... | 06/01/2004 |
| 6716405 | Process for removing unreacted ammonia from an effluent in a hydrocarbon ammoxidation reaction A process for removing unreacted ammonia from an effluent of a catalyst bed used in a hydrocarbon ammoxidation reaction is provided. The process includes a step of providing a fluidized bed reactor. The reactor includes the catalyst bed for reacting ammonia and hydr... | 04/06/2004 |
| 6667020 | Ammoxidation of a mixture of ketones to acetonitrile and HCN A process increasing the yield of both HCN and acetonitrile produced during the manufacture of acrylonitrile comprising introducing a hydrocarbon selected from the group consisting of propylene and propane, a crude ketone and/or a mixture of at least two ... | 12/23/2003 |
| 6656442 | Hydrogen cyanide process and apparatus therefor A catalytic process and apparatus therefor for the manufacture of hydrogen cyanide. In the process an oxygen rich oxidant stream and at least one oxidant-free feed steam containing methane and ammonia are separately preheated and rapidly mixed to form a d... | 12/02/2003 |
| 6649137 | Apparatus with improved safety features for high temperature industrial processes A conical reactor head for use in chemical processes or other systems is provided. The reactor head includes a robust internal insulator to boost efficiency while maintaining safety by allowing the reactor head to self-radiate at high temperatures. The re... | 11/18/2003 |
| 6596251 | Hydrogen cyanide synthesis process A process for the synthesis of hydrogen cyanide by the Andrussow process by reaction of methane or methane-containing natural gas, ammonia and oxygen or oxygen-enriched air on a catalyst at an elevated temperature, wherein ##EQU1##... | 07/22/2003 |
| 6534028 | Process for performing endothermic catalytic reactions A reactor for performing endothermic catalytic reactions is disclosed formed of a monolithic counterflow reactor with parallel heating and reaction channels. The internal walls of the reaction channels are coated with a catalyst for the catalytic reaction... | 03/18/2003 |
| 6491876 | Hydrogen cyanide process and apparatus therefor A catalytic process and apparatus therefor for the manufacture of hydrogen cyanide. In the process an oxygen rich oxidant stream and at least one oxidant-free feed stream containing methane and ammonia are separately preheated and rapidly mixed to form a ... | 12/10/2002 |
| 6455020 | Catalyst assembly comprising catalyst meshes and ceramic meshes The use of ceramic meshes is offered for spacing catalyst meshes apart from one another in the production of HCN, especially by the Andrussov process.... | 09/24/2002 |
| 6413485 | Ammoxidation of a mixture of ketones to acetonitrile and HCN A process increasing the yield of both HCN and acetonitrile produced during the manufacture of acrylonitrile comprising introducing a hydrocarbon selected from the group consisting of propylene and propane, a crude ketone and/or a mixture of at least two ... | 07/02/2002 |
| 6315972 | Gas phase catalyzed reactions This invention relates to improvements in processes and catalysts for elevated temperature, gas phase, catalyzed reactions in general; it is particularly illustrated by reference to the manufacture of hydrogen cyanide.... | 11/13/2001 |
| 6287531 | Preparation of hydrogen cyanide Hydrogen cyanide is produced by reacting ammonia and a hydrocarbon gas in the presence of a platinum-group-metal catalyst while the catalyst is heated by induction heating at a frequency of 0.5 to 30 MHz.... | 09/11/2001 |
| 6238574 | Oxidation and ammoxidation of acrylonitrile process waste water organics A process for upgrading aqueous acrylonitrile waste streams containing organic material comprising atomizing an acrylonitrile waste water stream containing organic material, introducing the atomized acrylonitrile waste water stream at a temperature below ... | 05/29/2001 |
| 6221327 | Catalyst system using flow-through radiation shielding and a process for producing hydrogen cyanide using the same This invention relates to an improved catalyst system utilizing flow through radiation shielding of the reaction zone and to processes for using the catalyst system for the production of hydrogen cyanide. The process has decreased methane usage while main... | 04/24/2001 |
| 6056932 | Reactor for performing endothermic catalytic reactions A reactor for performing endothermic catalytic reactions is disclosed formed of a monolithic counterflow reactor with parallel heating and reaction channels. The internal walls of the reaction channels are coated with a catalyst for the catalytic reaction... | 05/02/2000 |
| 6048512 | Process for preparing catalytically active coatings for the synthesis of hydrogen cyanide A process for preparing catalytically active coatings for the synthesis of hydrogen cyanide on moulded items substantially consisting of aluminum oxide. The catalytically active coatings contain, as active components, at least one platinum group metal and... | 04/11/2000 |
| 5976482 | Process for production of prussic acid A process for producing prussic acid by subjecting methanol to a gas-phase contact reaction with molecular oxygen and ammonia in the presence of a catalyst, wherein said catalyst is an oxide composition containing iron, antimony, phosphorus and vanadium w... | 11/02/1999 |
| 5961945 | Method of producing cyano compounds by ammoxidation An ammoxidizable compound is reacted with an ammonium salt, especially an inorganic ammonium salt, in the presence of a source of oxygen and an ammoxidation catalyst at 100 to 700° C., preferably 200 to 700° C., in order to produce cyano compounds of th... | 10/05/1999 |
| 5958273 | Induction heated reactor apparatus An improved induction heated reactor apparatus involving a reaction zone with inlet and outlet and containing an array of electrically conductive catalyst entities (susceptor entities) comprising pellets, rings, or rods containing a core externally coated... | 09/28/1999 |
| 5928984 | Process for preparing catalytically active coatings for the synthesis of hydrogen cyanide A process for preparing catalytically active coatings for the synthesis of hydrogen cyanide on moulded items substantially consisting of aluminum oxide. The catalytically active coating contain, as active components, at least one platinum group metal and ... | 07/27/1999 |
| 5882618 | Process for cyanic acid production Provided is a process for the production of hydrogen cyanide by reacting methane, ammonia and oxygen in the presence of a catalyst. The process, more specifically, comprises first establishing a temperature for the catalyst in the reaction using air as a ... | 03/16/1999 |
| 5859070 | Catalytic process Synthesis of small quantities of compounds such as methanol from reagents, especially radio-labelled reagents such as 11 C oxides, in a carrier gas by a catalytic reaction using a catalyst that has been pre-conditioned for the reaction by previ... | 01/12/1999 |
| 5785942 | Process for the production of hydrocyanic acid A process for the highly efficient production of hydrocyanic acid by reacting methane and ammonia to yield hydrocyanic acid in a reactor heated by the combustion of fuel gases and coated with a catalyst. The process is characterized in that the reactor co... | 07/28/1998 |
| 5401483 | Catalyst assembly providing high surface area for nitric acid and/or HCN synthesis A catalyst assembly is disclosed which comprises a plurality of foraminous wire mesh sheets disposed in intimate nested relation to each other along their broad surfaces, the wire sheets defining a non-planar cross-section which consists of a plurality of... | 03/28/1995 |
