Patents in Class 423/376

Matches 1 - 50 out of 99

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Match	Document	Document Title
1	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 t...
2	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,...
3	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...
4	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...
5	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...
6	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...
7	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...
8	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...
9	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...
10	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...
11	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...
12	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.
13	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...
14	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...
15	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...
16	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,...
17	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...
18	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 ...
19	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...
20	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...
21	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...
22	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...
23	5360603	Packed bed arrangement useful for mixing and/or oxidation The present invention relates to processes and apparatus for mixing oxidizable reactants with oxidant and/or oxidizing oxidizable reactants. Through using particular mixing and/or oxidizing...
24	5356603	Method for the production of hydrocyanic acid using a corrugated catalyst This invention is a method for producing hydrocyanic acid by using an element which comprises a foraminous structure fabricated from a material consisting essentially of a metal selected from the...
25	5266291	Packed bed arrangement for oxidation reaction system The present invention relates to processes and apparatus for mixing oxidizable reactants with oxidant and oxidizing oxidizable reactants. When ammonia is used as the reactant, nitric acid can be...
26	5262145	Catalyst for ammonia conversion to HCN The manufacture of hydrogen cyanide by the catalytic reaction of air/oxygen, ammonia and a hydrocarbon gas employing an improved catalytic reaction zone comprising a sequential array of...
27	5204079	HCN by catalytic ammoxidation of crude acetonitrile A process of producing hydrogen cyanide from crude acetonitrile comprising contacting the crude acetonitrile with an ammoxidation catalyst at an elevated temperature in the presence of an oxygen...
28	5160721	Process for maintaining high level of yield of acrylonitrile and hydrogen cyanide in ammoxidation of propylene A process for conducting long-term ammoxidation of propylene in the presence of a metal oxide catalyst for ammoxidation of propylene at a temperature of from 300° C. to 500° C. to produce a...
29	5158787	Process for the production of hydrogen cyanide An iron-antimony oxide catalyst for use in the production of hydrogen cyanide by the vapor phase catalytic ammoxidation of methanol, and a process for the production of hydrogen cyanide in the...
30	5096687	*WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST* Catalyst pack for ammonia conversion to HCN The manufacture of hydrogen cyanide by the catalytic reaction of air, ammonia and a hydrocarbon gas employing a catalyst pack which consists of a top layer of platinum-rhodium alloy catalyst gauze...
31	5094990	Iron-antimony-phosphorus-containing metal oxide catalyst for oxidation An iron-antimony-phosphorus-containing metal oxide catalyst for the catalytic oxidation, comprising a crystalline iron antimonate, the catalyst being represented by the following empirical formula:...
32	5091354	Alkane oxidation catalysts Site-specific, framework substituted heteropolyacid or a polyoxoanion catalysts useful in alkane oxidation processes.
33	5039643	Method for the production of catalytically active coatings for the production of hydrogen cyanide A method for the production of catalytically active coatings on shaped articles of aluminum oxide for the production of hydrogen cyanide according to the BMA method. A suspension is used for the...
34	4981830	Process for preparing iron-antimony-phosphorus-containing catalyst for fluidized bed process A process for preparing a metal oxide catalyst for a fluidized bed process, which comprises adjusting the pH of an aqueous slurry containing an iron compound, an antimony compound, a phosphorus...
35	4981670	HCN from crude aceto A process for producing hydrogen cyanide from gaseous acetonitrile comprising reacting the acetonitrile in the presence of an oxygen containing gas while in contact with an oxidation catalyst at an...
36	4965060	Process for producing hydrogen cyanide and appartus for use in the process A process for producing hydrogen cyanide which comprises reacting methane or a gas containing methane as a main component, ammonia and an oxygen-containing gas in the presence of a...
37	4961914	Method of preparing hydrogen cyanide As a result of a special form of the surface coating of Al2 O3 catalysts using additional amounts of aluminum ions and very slight amounts of platinum ions, Al2 O3 was able to be used as catalyst...
38	4869889	Process for the production of hydrogen cyanide A process for the production of hydrogen cyanide which comprises combining methanol ammoxidation with formamide decomposition in the same reactor, using a metal oxide catalyst. This process...
39	4853190	Process & apparatus for the production of hydrogen cyanide There is obtained an increase in the throughput in the known BMA furnace or a BMA furnace chamber without changing the construction and dimensions already present by changing the lower part of the...
40	4788317	Ammoxidation of paraffins and catalysts therefor Disclosed is a process for ammoxidation of paraffins containing 3-5 C atoms using a complex metal oxide catalyst which is essentially free of bismuth, and has the elements and the proportions which...
41	4774352	Process for ammoxidation The activity of a tellurium-free metal oxide catalyst used for ammoxidation of organic compounds at a temperature of from 300° C. to 600° C. is improved in the presence of (a) elemental tellurium o...
42	4757038	Regeneration of iron-antimony metallic oxide catalysts Iron-antimony metallic oxide catalysts which have become deactivated after being used for the production of aldehydes, acids, nitriles, or dienes through oxidation, ammoxidation, or oxidative...
43	4709071	Process for improving activity of tellurium containing metal oxide catalysts A process for improving the activity of tellurium containing metal oxide catalysts useful as catalysts for oxidation, ammoxidation or oxidative dehydrogenation of organic compounds by heating the...
44	4536483	Process for regeneration of iron-antimony metallic oxide catalysts Iron-antimony metallic oxide catalysts which have become deactivated after being used for the production of aldehydes, acids, nitriles, or dienes through oxidation, ammoxidation, or oxidative...
45	4530826	Method for recovering and utilizing waste heat In a process for producing chemical substances comprising steps of cooling, condensing and solvent-absorbing the reaction product gas having a high temperature formed in a reactor, an absorption...
46	4521395	Process for oxidation and ammoxidation A process for the ammoxidation of methanol or formaldehyde to hydrogen cyanide or oxidation of methanol to formaldehyde using a catalyst comprising boron and phosphorus oxides, wherein the boron to...
47	4511548	Ammoxidation of methanol to produce hydrogen cyanide Promoted antimony phosphate oxide complexes are excellent catalysts for the ammoxidation of methanol to HCN especially at high methanol throughputs.
48	4485079	Ammoxidation of methanol to produce hydrogen cyanide Promoted bismuth rare earth molybdenum oxide complexes are excellent catalysts for the ammoxidation of methanol to HCN especially at high methanol throughputs at contact times appropriate for...
49	4469666	Catalyst units for producing hydrocyanic acid This invention relates to catalyst units embodying or consisting of catalytic material in wire or strip (herein referred to simply as "wire") form and especially to such units for catalytic...
50	4461751	Processes for carrying out catalytic endothermic high-pressure gas reactions Processes for carrying out catalytic exothermic and endothermic high-pressure gas reactions with a single-walled pressure vessel or shell containing cross-flow (e.g., radial flow) heat transfer...

Matches 1 - 50 out of 99

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