Matches 101 - 150 out of 238 < 1 2 3 4 5 >
Match Document Document Title
5457223 Process for elimination of waste material during manufacture of acrylonitrile  
A process for the substantial or complete elimination of ammonium sulfate generated during the production of acrylonitrile by the direct ammoxidation of propylene/propane, ammonia and an oxygen...
5447701 Gas purification method  
An adsorbent comprising a sepiolite and a zeolite, especially silicalite and a zeolite-containing adsorptive decomposition composition comprising the adsorbent and a catalyst component supported...
5443805 Reduction of combustion effluent pollutants  
Injection of additive such as ammonia or calcium compounds along with a small amount of hydrocarbon, preferably methane or natural gas, in a relatively high temperature region of the effluent...
5443806 Treating exhaust gas from a pressurized fluidized bed reaction system  
Hot gases from a pressurized fluidized bed reactor system are purified. Under superatmospheric pressure conditions hot exhaust gases are passed through a particle separator, forming a flitrate cake...
5372706 FCC regeneration process with low NO.sub.x CO boiler  
Oxides of nitrogen (NO x ) emissions from an FCC regenerator are reduced by operating the regenerator in partial CO burn mode and adding substoichiometric, or just stoichiometric air to the flue...
5364439 Method to treat geothermal fluid streams  
An integrated system of non-condensable gas (NCG) and condensate treatment allows geothermal power plant condensate and non-condensable gas effluent streams containing H 2 S and ammonia to be...
5352424 Aluminum nitride powder having a reduced ammonia odor and a method for preparing the same  
An aluminum nitride powder that has substantially no ammonia odor after exposure to atmospheric moisture is obtained by admixing the powder with a gettering compound that sublimes or decomposes at...
5328671 Heat and mass transfer  
In a chemisorption reaction process wherein a polar gas is repeatedly alternately adsorbed and desorbed on a complex compound formed by adsorbing said polar gas on a metal salt, said complex...
5320817 Process for sorption of hazardous waste products from exhaust gas streams  
A method for cleaning an exhaust gas containing ammonia and at least one silicon-containing compound selected from the group consisting of silane and chlorosilanes, which comprises contacting the...
5292492 Recovering sulfur from ammonia acid gas stream  
Method and system for recovering sulfur from an ammonia acid gas stream containing hydrogen sulfide comprising the steps of combusting the ammonia acid gas stream with air or oxygen to convert the...
5277886 Method for reducing the risk in transporting and storing liquid ammonia  
The addition of a nucleating or coalescing agent (e.g., urea) to liquid ammonia reduces the size and persistence of a deadly, fog-like cloud of ammonia droplets that tend to form when liquid...
5240690 Method of removing NH.sub.3 and HCN from and FCC regenerator off gas  
A method is disclosed for the addition of an oxygen-containing gas under certain defined process conditions, to an off-gas stream derived from an FCC regenerator which is operated in a partial mode...
5234884 Adsorbent composition and method of producing same  
A precipitate composition comprising a water-insoluble phosphate of at least one metal selected from the group consisting of Ti, Zr and Sn, and a hydroxide of at least one metal selected from the...
5219544 Method of purifying the exhaust gases from plants for the production of cement clinker  
The invention relates to a method of purifying the exhaust gases from plants for the production of cement clinker, in which the filter zone through which the exhaust gases flow contains at least...
5215674 Method for reducing the risk in shipment of liquid ammonia  
Accidental spills of liquid ammonia can result in the formation of deadly, fog-like ovoids of ammonia droplets that persist for an appreciably time before dissipating. The addition of a coalescing...
5213587 Refining of raw gas  
The invention relates to a process for the refining of a raw gas produced from a carbonaceous material by means of a gasification process, refining taking place in a secondary stage separated from...
5211926 Process for extracting of disposing of ammonia or ammonia compounds from dust mixtures  
In order to recover or dispose of ammonia or ammonia compounds from mixtures of dust that occur during combustion processes, during subsequent gas cooling, or during subsequent gas scrubbing, the...
5198128 Waste disposal site, in particular for the ultimate disposal of radioactive substances  
A waste disposal site, such as an ultimate disposal site for radioactive substances, includes installed waste having hollow spaces remaining therebetween. Packing material fills the remaining...
5188811 Molybdenum-based additives to mixed-metal oxides for use in hot gas cleanup sorbents for the catalytic decomposition of ammonia in coal gases  
This invention relates to additives to mixed-metal oxides that act simultaneously as sorbents and catalysts in cleanup systems for hot coal gases. Such additives of this type, generally, act as a...
5169825 Ammonium ion- and ammonia-selective adsorbent and process for preparation of same  
The present invention provides an ammonium ion- and ammonia-selective adsorbent. According to the invention, an ammonium ion-selective adsorbent can be obtained by introducing alkali metal ions...
5160707 Methods of and apparatus for removing odors from process airstreams  
After aerating sewage sludge in a composting process, a stream of process air is treated to remove odors therefrom by injecting into the airstream an atomized mixture of dilute sulfuric acid and...
5145657 Method for purification of gas  
A catalyst for the purification of a gas containing ozone or a component of offensive odor is composed of (A) a composite oxide comprising (a) titanium and (b) at least one element selected from...
5145652 Apparatus for the removal of nitrogen burner exhaust  
Method for the removal of nitrogen from the exhausts of burners after they are cleaned of dust or sulfur, in which the nitrogen-bearing exhaust gases are reheated by the transfer of heat from the...
5139756 Catalytic oxidation of ammonia  
A process for decomposing ammonia recovered from coke oven gas through catalytic oxidation in the presence of oxygen gas, which comprises contacting a catalyst containing at least copper oxide or...
5078980 Process for the removal of isocyanic acid from a mixture of isocyanic acid and ammonia  
Process for the removal of isocyanic acid from a gaseous mixture of isocyanic acid and ammonia by introducing a tertiary amine or ether at 250° to 600° C. The gaseous reaction mixture is passed...
5069886 Process and installation for the recovery of ammonia during the separation of nitrogen oxide from waste gases  
Process and apparatus wherein nitrogen oxides NO x contained in waste gases produced by combustion of fossil fuels in a firing plant are removed by reacting the waste gases with ammonia NH 3 to...
5057642 Removal of basic impurities from olefin streams  
Basic impurities, in particular ammonia, are removed from monoolefin-containing feeds, in particular an isobutylene-containing feed, by contacting with a hydrated acidic clay.
5055282 Method of decomposing ammonia using a ruthenium catalyst  
For carrying out a process for decomposing, into hydrogen and nitrogen, ammonia recovered from a coke oven gas by combining a catalytic combustion of ammonia and a catalytic decomposition of...
5041144 Process of purifying raw fuel gas produced by a gasification of solid fuels  
The raw gas produced by gasification is cooled to temperatures from 150° to 400° C. and has an NH 3 content of at least 0.1% by volume as it is fed to a spray drying zone. Recycle water is fed...
5020457 Destruction of acid gas emissions  
A method of destroying NO x and SO 2 in a combustion gas in disclosed. The method includes generating active species by treating stable moleucles in a high temperature plasma. Ammonia, methane,...
5019667 Process for purification of hydrocarbons  
Clinoptilolites, including both natural and synthetic clinopilolites which have been ion-exchanged with metal cations such as lithium, sodium, potassium, calcium, magnesium, barium, strontium,...
4968488 Integrated system for pollution abatement and energy derivation from steam  
An integrated system for the derivation of useful energy from impure steam and/or use in connection therewith, said steam containing both hydrogen sulfide and an alkaline acting component, such as...
4898530 Method of operating a pair of burners and apparatus for use in the method  
A pair of regenerative burners is provided with feed means (25) for feeding a reducing agent into the products of combustion so that this agent can reduce oxides of nitrogen in the heat store to...
4875945 Process for cleaning the exhaust gas of a fusion reactor  
The exhaust gas of a fusion reactor contains, besides non-burnt fuel (tritium and deuterium) and helium, the "ash" from the nuclear fusion reaction a number of impurities with the radioactive...
4779412 Power generation process using a gas turbine  
In a power generation process using a gas turbine for conversion of the energy of gas which is produced by the gasification of a fossil carbon-bearing material such as brown coal, the gas is...
4778490 Process for removal of volatile matter from coke-oven plant waters  
In a process for removal of volatile matter such as ammonia, hydrogen-sulphide, and prussic acid from coke-oven plant water by means of gas in a stripper, the tail gas of an ammonia destruction...
4770864 Process for removing NH.sub.3 in an SO.sub.2 -containing gas  
An SO 2 -containing gas, in particular, pre-stage gas for the Claus reaction to recover sulfur can effectively be purified by removing NH 3 contained therein using a TiO 2 catalyst.
4761164 Method for gas separation  
The present invention is a process for separating one or more components of a gas mixture. The process comprises passing the gas mixture over a membrane, which is selectively permeable to the...
4755282 Process for the reduction of NH.sub.3 in regeneration zone off gas by select recycle of certain-sized NH.sub.3 decomposition catalysts  
This process discloses a reduction in the content of ammonia in a regeneration zone off gas of a fluid catalytic cracking unit by the select recycle of certain sized ammonia decomposition catalyst...
4744962 Process for the reduction of ammonia in regeneration zone off gas by select addition of NO.sub.x to the regeneration zone or to the regeneration zone off gas  
A regeneration zone for fluid catalytic cracking contains ammonia (NH 3 ) when the regeneration zone is operated in a partial combustion mode as defined by a content of CO of between 1 and 6...
4726302 Method of reducing the nitrogen oxide content of a flue gas produced by a fossil-fuel power plant  
A method of reducing the nitrogen oxide level in flue gases from a fossil-fuel power plant in which NH 3 is admixed with the flue gas as a reducing agent and the nitrogen oxides are largely...
4701412 Method and apparatus for preventing cross-examination of biochemical test wells in a microtiter test plate  
This invention relates to an improved method and apparatus for preventing cross-contamination of biochemical test wells included in a microtiter test plate which comprises the covering of the...
4680040 Multipurpose filtering material  
A multipurpose filtering material particularly for use in electrostatographic reproducing apparatus has a foraminous support matrix having a plurality of interconnecting voids to permit low...
4680269 Method and apparatus for preventing cross-contamination of biochemical test wells in a microtiter test plate  
This invention relates to a porous barrier impregnated with an acidic compound positioned in overlying relation atop the biochemical test wells portion of an antibiotic microtiter test plate...
4668489 Method for treating gas streams  
A gaseous constituent such as SO 2 , HCl, or HF is removed from a gas stream in a granular bed filter containing granules coated with a sorbent material which is reactive with the gaseous...
4652678 Process for the recovery of valuable components from the waste streams obtained in the preparation of urea  
An improved process for recovering usable components from waste streams containing urea, including a dilute aqueous urea solution, which result from the preparation of particulate urea products....
4643888 Process and apparatus for recovery of sulfur from ammonia containing acid gas streams  
A regeneration effluent stream containing ammonia from an adsorptive Claus reactor is processed to produce a stream enriched in ammonia and an ammonia-lean regeneration effluent stream. The stream...
4620967 Method of recovering sulfur in a Claus process from vapors obtained in coke oven gas cleaning  
The ammonia, hydrogen cyanide, and hydrogen sulfide scrubbed out of crude coke oven gases are decomposed and combusted, and sulfur is recovered therefrom in a Claus process, while using preheated...
4619608 Process for removal of pollutants from waste gas emissons  
Chlorine is injected in a gaseous liquid or solution form into a hot (greater than 100° C.) gas stream for the purpose of oxidizing objectionable components in the gas stream, such as, but not...
4559210 Multi-stage method for washing-out ammonia from gas, particularly coking oven gas  
In a multi-stage washing process for the removal of ammonia from coking oven gas, a portion of waste water, produced during the separation of ammonia from ammonia-containing water in an ammonia...
Matches 101 - 150 out of 238 < 1 2 3 4 5 >