Bizarre Patents
A simulation environment for the sport of boxing utilizing a robotic machine interface system which carries a person.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7837965 | Process to remove hydrogen-sulfide from gas by reflux recycle from sour water stripper A process for reducing hydrogen sulfide from a gas comprising contacting the gas with an aqueous scrubbing liquid recycled from a sour water stripper. The aqueous scrubbing liquid comprises ammonia. The contacting of the gas with the aqueous scrubbing liquid thereby... | 11/23/2010 |
| 7326391 | Process for recovery and recycle of ammonia from a vapor stream A process for the recovery of unreacted ammonia from the effluent from a reaction zone used to produce acrylonitrile or methacrylonitrile comprising quenching the reactor effluent with an aqueous solution of ammonium phosphate in at least two stages, thereby capturi... | 02/05/2008 |
| 7311758 | Method of purifying a natural gas by mercaptan adsorption The raw natural gas is deacidized and dehydrated in units DA and DH. The treated gas is then purified by adsorption of the mercaptans in first enclosure A1. Part of the purified gas is heated in E1, then fed into second enclosure A2 so as to dis... | 12/25/2007 |
| 7255842 | Multi-component removal in flue gas by aqua ammonia A new method for the removal of environmental compounds from gaseous streams, in particular, flue gas streams. The new method involves first oxidizing some or all of the acid anhydrides contained in the gas stream such as sulfur dioxide (SO2) and nitric o... | 08/14/2007 |
| 7234692 | Column tray A column tray assembly includes a tray having passages formed therein. The tray is a multifunction tray and is configured to receiving appropriate superstructures which can be selected according to the respective use of the assembly. Superstructures which communicat... | 06/26/2007 |
| 7204967 | Waste water process with scrubber An apparatus and method for treating waste products produced by chemical processing plants. Steam stripping waste sour water results in a vapor including ammonia and hydrogen sulfide. A scrubber unit including a quenching column produces a concentrated ammonium sulf... | 04/17/2007 |
| 7160456 | Method and equipment for processing organic material A method for processing organic material, in which method bioconversion is performed on the organic material in at least one first reactor, the biogas formed in the bioconversion is treated with ammonia in at least one second reactor and buffer solution produced in ... | 01/09/2007 |
| 7153344 | Process for the preparation and recovery of carbon dioxide from waste gas or fumes produced by combustible oxidation A process for the separation and recovery of carbon dioxide from waste gases produced by combustible oxidation is described comprising the steps of feeding a flow of waste gas to a gas semipermeable material, separating a gaseous flow comprising high concentrated ca... | 12/26/2006 |
| 7005115 | Gas combustion treatment method and apparatus therefor A gas combustion treatment method for the combustion treatment of an ammonia-containing gas and a hydrogen sulfide-containing gas, the method comprising a first combustion treatment step in which the ammonia-containing gas, together with a fuel, is introduced and bu... | 02/28/2006 |
| 6451164 | Alkyleneamine composition for enhancing lime mud dewatering A process for de-watering lime mud in a Krafft pulping process is described. The process includes an improvement which comprises adding an effective water-removal rate enhancing amount of an alkyleneamine to the lime mud prior to filtration. The preferred... | 09/17/2002 |
| 6416725 | Removal of contaminants from gas streams in rayon production Sulfurous gas streams comprising hydrogen sulfide and carbon disulfide, such as produced as a by-product of the rayon-forming process, are processed to recover the components in a useable form. The gas stream first is contacted with an aqueous sodium hydr... | 07/09/2002 |
| 6348129 | Treatment of pulp mill condensate with ozone An aqueous stream such as pulp mill condensate containing one or more sulfur compounds is treated by (a) reacting an aqueous feed stream containing TRS contaminant selected from the group consisting of hydrogen sulfide, methyl mercaptan, dimethyl sulfide,... | 02/19/2002 |
| 6235961 | Process for pretreating cracked gas before caustic tower treatment in ehtylene plants An inline, high-shear mixer is provided in a cracked gas stream upstream of a caustic tower in an ethylene production unit. Spent caustic is withdrawn from the bottom of the caustic tower and pumped to the mixer, where the spent caustic mixes with and abs... | 05/22/2001 |
| 6217839 | Removal of sulfur compounds from gaseous waste streams Sulfur dioxide and other sulfur compounds are removed from various waste gas streams including those from incineration, refinery sulfur processing, coal burning, or metal smelting operations. The process for sulfur compound removal comprises, in an adsorp... | 04/17/2001 |
| 6176079 | Process and apparatus for reducing nitrogen-oxide emissions in exhaust gas A method of cleaning an exhaust gas from a combustion system that is operated alternately in lean and rich conditions includes intermediately storing nitrogen oxides during lean operation; releasing the stored nitrogen oxides, thereby producing ammonia an... | 01/23/2001 |
| 6099815 | Method for removing carbonyl sulfide from fluids using carbon monoxide A method is provided for removing carbonyl sulfide out of a H2 O-containing fluid stream, such as petrochemical vent gas, air, carbon dioxide, nitrogen and hydrocarbons, by determining how much carbon monoxide is present in the fluid stream; ad... | 08/08/2000 |
| 6083472 | Method for continuously producing thiosulfate ions A process is provided for the removal of hydrogen sulfide out of a gas stream by contacting the hydrogen sulfide contaminated gas with a solution of chelated metal catalyst, such as iron EDTA, in a scrubbing vessel so as to result in a cleaned gas and a s... | 07/04/2000 |
| 6030591 | Process for removing and recovering halocarbons from effluent process streams A process for recovery of fluorocompound gas from an effluent gas stream containing the fluorocompound gas and other gas components, in which at least one of the other gas components is removed, e.g., by oxidation or contacting of the effluent stream with... | 02/29/2000 |
| 5958353 | Method for reducing atmospheric pollution The invention provides a method for reducing atmospheric pollution caused by a pollutant selected from the group consisting of CO2, SO2 and a mixture thereof, the pollutant being contained in industrial gases being emitted to the atm... | 09/28/1999 |
| 5670443 | Exhaust gas cleaner and method for cleaning exhaust gas An exhaust gas cleaner constituted by a first catalyst comprising a first porous inorganic oxide supporting an Ag component, a W component and a Pt component and optionally a second catalyst comprising a second porous inorganic oxide supporting a Pt compo... | 09/23/1997 |
| 5450892 | Alkaline scrubber for condensate stripper off-gases This invention relates to an alkaline scrubber for condensate stripper off-gases. In particular, this invention relates a process for selectively removing hydrogen sulfide and methyl mercaptan from a gas stream containing these compounds and methanol. Suc... | 09/19/1995 |
| 5434329 | Treatment of spent refinery caustic A hydrocarbon stream is washed with caustic solution to reactively remove hydrogen sulfide and produce a spent caustic solution containing sulfide reaction products. The spent caustic solution is stripped with concentrated carbon dioxide to reactively rem... | 07/18/1995 |
| 5427759 | Method of recovering ammonia and compounds from offgases contaminated with organic materials, carbon dioxide, and ammonia A method for recovering ammonia and organic compounds from offgases contaminated with organic materials, carbon dioxide, and ammonia, using a combined absorption and rectification column is disclosed. Carbon dioxide is washed out with aqueous alkali, ammo... | 06/27/1995 |
| 5424051 | Process for the removal of carbon dioxide and mercaptans from a gas stream This invention relates to a process for treating a feed gas stream containing CO2 and mercaptans by contacting the feed gas stream with a CO2 -selective adsorbent under conditions effective to produce a CO2 -depleted feed ... | 06/13/1995 |
| 5231836 | Two-stage condenser First and second indirect contact condensing heat exchangers are used to separate gases from a mixture of condensible and non-condensible gases, such as the vapor from the last stage of a black liquor evaporation plant of a pulp mill. The mixture of gases... | 08/03/1993 |
| 5149460 | Composition for H2 S removal A process for removal of H2 S from gas streams is described, the process being characterized by use of a novel iron chelate treating solution containing a specified ferric to ferrous chelate ratio, aqueous ammonia, and thiosulfate ion.... | 09/22/1992 |
| 5149459 | H2 S removal composition A process for removal of H2 S from gas streams is described, the process being characterized by use of a novel iron chelate treating solution containing a specified ferric to ferrous chelate ratio and aqueous ammonia.... | 09/22/1992 |
| 5069689 | Closed loop pollution control system Many industrial operations generate and release volatile organic compounds. The fumes, frequently mixed with large quantities of air, are collected and sorbed on activated carbon. The spent sorbent is frequently sent to an off-site facility for reactivati... | 12/03/1991 |
| 5035813 | Process and composition for treating underground formations penetrated by a well borehole An aqueous fluid for treating underground, carbon dioxide-containing formations penetrated by casing regions of a wellbore, prior to the cementing of casings into the wellbore, comprises: (i) water, (ii) an agent which substantially increases (preferably ... | 07/30/1991 |
| 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 ammonia, while producing liquid-phase and gaseous-phase ef... | 11/06/1990 |
| 4960575 | Removal of hydrogen sulfide with on site generated sulfite from geothermal steam Geothermal steam is condensed with a sulfite solution to abate hydrogen sulfide. A portion of the hydrogen sulfide is converted in the condensation in the presence of soluble cationic polymeric catalysts to soluble sulfur compounds while avoiding elementa... | 10/02/1990 |
| 4874589 | Method for desulfurization of sulfur or hydrogen sulfide-containing gases Gas containing sulfide is washed in the washing vessel (13) with a washing liquid that normally comprises an alkaline solution having sodium 1,4-naphthoquinone-2-sulfonate as the catalyst. Contaminated liquid is subjected in a pressure vessel (59) to aera... | 10/17/1989 |
| 4871520 | Process and composition for H2 S removal A process for removal of H2 S from gas streams is described, the process being characterized by use of a novel iron chelate treating solution containing a specified ferric to ferrous chelate ratio, aqueous ammonia, and thiosulfate ion.... | 10/03/1989 |
| 4859436 | H2 S removal process and composition A process for removal of H2 S from gas streams is described, the process being characterized by use of a novel iron chelate treating solution containing a specified ferric to ferrous chelate ratio and aqueous ammonia.... | 08/22/1989 |
| 4847057 | Process and installation for ammonia treatment of a gas This process comprises eliminating the ammonia from a gaseous effluent of the treatment of scrubbing with a liquid essentially comprising water, regenerating the scrubbing liquid by stripping countercurrent with respect to the gas to be treated, then recy... | 07/11/1989 |
| 4765969 | Continuous process for scrubbing hydrogen sulfide to produce elemental sulfur A continuous process for removing hydrogen sulfide from a gas stream by contacting the gas stream with a solution of ammonium hydroxide to produce an effluent liquid stream comprising ammonium sulfide which is fed to a heating zone maintained at least at ... | 08/23/1988 |
| 4748011 | Method and apparatus for sweetening natural gas A method and apparatus are disclosed for sweetening of natural gas at the well head or at a common collection point from a number of wells, where, in the usual collection system for natural gas, the gas from one or more wells is collected through a collec... | 05/31/1988 |
| 4729883 | Acid gas removal process The invention relates to a process for the removal of acid gases from gaseous mixtures wherein said mixture is contacted with an aqueous alkaline solution comprising a compound of an alkali metal or ammonia and an alkanolamine-based promoter characterized... | 03/08/1988 |
| 4702898 | Process for the removal of acid gases from gas mixtures The present invention is directed to an improved process for the removal of acid gases from gas mixtures which significantly decreases the consumption of heat needed for regenerating the rich alkaline scrubbing solution which is used to remove the acid ga... | 10/27/1987 |
| 4690697 | Long residence pollution control system Method and apparatus for removing noxious gases, such as, oxides of nitrogen, sulfur or carbon from industrial influent gas streams which utilizes growing plants positioned in long residence contact time apparatus for removing the noxious gases.... | 09/01/1987 |
