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7604788 |
Process for the conversion of polysulfanes
The invention provides a process for the removal of polysulfanes from gas streams formed during H 2 S synthesis.
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7585479 |
Method of deacidizing a gas by partly neutralized multiamines
A method of deacidizing a gaseous effluent including acid compounds includes the following stages: a) contacting the gaseous effluent with a first fraction of an absorbent solution containing...
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7541011 |
Phase transitional absorption method
The present invention is directed to an improved method and system for separating and purifying gas using gas-liquid absorption. According to this invention, the method is carried out in an...
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7485275 |
Method for removing acid gases and ammonia from a fluid stream
A method is provided for removing acid gases and ammonia from a fluid stream in which a fluid stream comprising acid gases and ammonia is brought into contact with an aqueous absorption medium. The...
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7481988 |
Method for obtaining a high pressure acid gas stream by removal of the acid gases from a fluid stream
A method for obtaining an acid gas stream having a pressure of from 3 to 30 bar by removal of acid gases from a fluid stream containing H 2 S, the molar fraction of H 2 S based on the total amount...
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7438877 |
Fast, high capacity hydrogen sulfide scavengers
Selective, irreversible removal of hydrogen sulfide (H 2 S) and other sulfhydryl compounds from a gas stream, such as sour natural gas and sour hydrocarbon liquids is achieved with a scavenging...
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7425314 |
Process for removing sulphur compounds including hydrogen sulphide and mercaptans from gas streams
A process for the removal of hydrogen sulfide and mercaptans from a gas stream containing a high ratio of mercaptans to hydrogen sulfide, wherein the first step removes hydrogen sulfide by washing...
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7419646 |
Method of deacidizing a gas with a fractional regeneration absorbent solution
The gaseous effluent flowing in through line 1 is contacted in absorption zone ZA with the liquid absorbent solution flowing in through line 9. The gaseous effluent depleted in acid compounds...
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7387768 |
Method for purifying gases
The invention relates to the use of an absorption liquid for purifying gases from gaseous acidic contaminants, the absorption liquid comprising
A) 0.1 to 100% by weight of one or more amines of...
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7384616 |
Waste gas treatment process including removal of mercury
A process for removing contaminants from a waste gas stream comprises treating the waste gas stream to remove at least one of SO 2 and NO x and to obtain a lean stream having a reduced level of...
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7374734 |
Absorbing agent and method for eliminating acid gases from fluids
The disclosure relates to an absorbent for removing acid gases from fluids. The absorbent contains at least one tertiary amine, an amine which is selected from hydroxyethylpiperazine,...
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7332145 |
Process and installation for the treatment of DSO
Disclosed is a process for the treatment of gas containing mercaptans and acid gases, including the following steps: (1) separating the acid gases from the said gas and obtaining a sweetened gas...
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7214358 |
Low energy regenerable SO2 scrubbing process
Sulphur dioxide is removed from gas streams by contacting the gas stream with an absorbing medium containing an amine capable of forming an amine salt, heat stable salt and sulfite. The level of...
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7056482 |
Method for recovery of CO2 from gas streams
A process for recovering CO 2 from a feed gas stream comprises treating the feed gas stream with a regenerated absorbent comprising at least one tertiary amine absorbent having a pK a for the...
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6852144 |
Method for removing COS from a stream of hydrocarbon fluid and wash liquid for use in a method of this type
COS is selectively removed with respect to CO 2 from a hydrocarbonaceous fluid stream which contains CO 2 and COS. Examples of the fluid stream include a gas stream, for example natural gas,...
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6770119 |
Mercury removal method and system
The present invention provides a mercury removal method which can effectively remove very small amounts of mercury components present in a gas during wet gas purification such as coal or heavy oil...
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6746623 |
Alkyl glycidyl ether-capped diamine foam controlling agent
The present invention pertains to a method for controlling the foaming of a waterborne composition or in an industrial process utilizing a waterborne composition by the incorporation of a foam...
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6740230 |
Method for removing mercaptans from fluid fluxes
The disclosure concerns a process for removing mercaptans from fluid streams comprising same, especially from hydrocarbon gas streams, for example natural gas, synthesis gas from heavy oil or heavy...
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6666908 |
Process for deacidizing a gas with washing of the hydrocarbons desorbed upon regeneration of the solvent
Within the scope of a process using two absorption sections for treating a natural gas containing CO 2 and/or H 2 S, as well as mercaptans, COS and/or CS 2 , the present invention aims to wash the...
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6602324 |
Sulfur control in ion-conducting membrane systems
A method for controlling the sulfur dioxide partial pressure in a pressurized, heated, oxygen-containing gas mixture which is contacted with an ion-conducting metallic oxide membrane which...
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6595218 |
Cigarette filter
A cigarette filter having a reagent which chemically reacts with and removes a gaseous component of a smoke stream. The reagent contains functional groups covalently bonded to a non-volatile...
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6544492 |
Regeneration method for process which removes hydrogen sulfide from gas streams
A process is provided for the removal of hydrogen sulfide out of a gaseous stream ( 22 ), such as a natural gas, by contacting the hydrogen sulfide containing gas with a sorbing liquid ( 26 )...
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6355094 |
Material for the removal of gaseous impurities from a gas mixture
Porous, preferably dimensionally stable material and a method for using for the removal of gaseous impurities from a gas mixture, such as H 2 S, COS, CH 2 , and SO 2 , into the pores of which there...
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6342169 |
Safe storage and transportation of sulfur dioxide
The invention relates to a method of confining sulfur dioxide for storage or transportation under safe conditions. The method of the invention comprises the steps of (a) contacting a sulfur...
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6337059 |
Absorbent compositions for the removal of acid gases from gas streams
An absorbent composition for the removal of acid gases, such as CO 2 , H 2 S and COS, from gas streams is provided. The absorbent composition comprises an aqueous solution comprising: 1) greater...
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6277345 |
Process for the purification of gases
The present invention relates to the use of an absorption liquid for purifying a gas by removal of gaseous, acidic impurities. The gas to be purified can be any gas, such as synthesis gas or...
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6267939 |
Absorbent composition for purifying gases which contain acidic components
An absorbent composition for purifying gases which contain acidic components. The composition contains at least one compound of formula (I), wherein n is 2-6, p is 1-3, the R 1 groups may be the...
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6221277 |
Composition for removing sulfur compounds from fluids
The present invention relates to an activated metal oxide and methods for removing sulfur compounds from fluids, whereby the activated metal oxide includes an amount of metal oxide and an amount of...
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6174507 |
Acid gas solvent filtration system
The invention is a process for separating acid gases from synthesis gas and treating the resulting solids. A mixture comprising synthesis gas and acid gas is contacted with a fluid that reacts with...
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6096280 |
Natural gas treatment process
Hydrogen sulfide is removed from gas streams by reaction with sulfur dioxide in an autogeneously-formed aqueous acid medium according to the equation: SO 2 +2H 2 S➝2H 2 O+3S the sulfur being...
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5980733 |
Method of removing sulfur compounds from hydrocarbon streams
A method of removing hazardous sulfur compounds, such as hydrogen sulfide, mercaptans and sulfur oxides, from a fluid stream comprising contacting the fluid stream with an aqueous composition...
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5879433 |
Method and apparatus for reducing the acid gas and/or inert particulate content of steam
One or more contaminants selected from the group consisting of acidic gases, inert particulates, and mixtures thereof are removed from steam by contacting the contaminated steam with a nonaqueous...
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5705090 |
Absorption of mercaptans
Absorption solvents for removing mercaptans from gas streams are disclosed. The absorption solvents comprise an alkylether of a polyalkylene glycol, e.g., methoxytriglycol, and a secondary...
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5700438 |
Process for removal of H2S from gas processing streams
A process for removing H2S and mercaptans from gas streams. The process comprises contacting such gas streams with an aqueous solution of copper complex of a water soluble amine to form water...
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5693297 |
Gas treatment method
A system and method for injecting a gaseous contaminant absorbent through at least one spray nozzle into a pipe transporting gas to a contacting vessel wherein the gas is contacted with a liquid...
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5688478 |
Method for scavenging sulfides
A method is provides for reducing the levels of hydrogen sulfide and organic sulfides present in gaseous hydrocarbon streams by contacting the streams with a composition comprising the reaction...
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5625117 |
Fuel gas stripping of rich amine to remove hydrocarbons
Minor amounts of C 3 -C 4 hydrocarbons from amine absorbents used in removing H 2 S liquid C 3 -C 4 hydrocarbon are recovered. The process features recovery of the C 3 -C 4 hydrocarbon in a...
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5622681 |
Dialysis separation of heat stable organic amine salts in an acid gas absorption process
There is disclosed an organic amine scrubbing process for acid gas abatement of gas streams. The process comprises Donnan dialysis of an absorbent solution to separate and convert organic amine...
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5607594 |
Process for purifying an aqueous methyldiethanolamine solution
In the process for purifying an aqueous MDEA-solution the formate content of the MDEA-solution circulated in a main stream between the absorber and desorber of a hydrogen sulfide wash unit for gas...
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5607011 |
Reverse heat exchanging system for boiler flue gas condensing and combustion air preheating
A condensing heat exchanger for removing acidic vapors and recovering residual waste heat energy normally rejected into the atmosphere from a fossil fueled boiler flue gas stream, wherein the waste...
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5589149 |
Process for absorption of mercaptans
Absorption solvents for removing mercaptans from gas streams are disclosed. The absorption solvents comprise an alkylether of a polyalkylene glycol, e.g., methoxytriglycol, and a secondary...
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5523069 |
Carbonyl sulfide abatement in fluids
A method for removing carbonyl sulfide from fluids, particularly gases, involves contacting them with alkaline aqueous solutions containing peroxide and hindered amine. The sulfur products so...
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5466270 |
Cyclonic centrifugal gas separator - absorber apparatus for boiler flue gas cleaning
Sulfur dioxide in flue gas exhaust stream from fossil fueled boiler, is absorbed by a regenerative organic solvent in a centrifugal gas separator-absorber.
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5462721 |
Hydrogen sulfide scavenging process
The levels of hydrogen sulfide and organic sulfides present in gaseous or liquid hydrocarbon streams or mixtures thereof are reduced by contacting the streams with a composition comprising the...
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5433934 |
Method for simultaneous absorption of sulfur dioxide and nitric oxide from flue gas
The simultaneous abatement of NO and SO 2 in flue gas is provided by an absorption process and apparatus utilizing an absorbent composition comprising an aqueous solution of chelates and sulfite...
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5403569 |
Process for boiler flue gas cleaning by absorption, separation and liquefaction
Sulfur dioxide in flue gas exhaust stream from fossil fueled boiler, is absorbed by a regenerative organic solvent in a centrifugal gas separator-absorber.
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5364604 |
Solute gas-absorbing procedure
A solute gas absorbing procedure employs a parallel flow of liquid absorbing medium to dual-fluid spray nozzles from which are formed fine droplet sprays in which the solute gas is absorbed. The...
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5342592 |
Lance-type injection apparatus for introducing chemical agents into flue gases
The removal of sulfur oxides (SO x ) and nitrogen oxides (NO x ) from combustion effluents is enhanced by the supplying of reactants in a particular distribution pattern in the gas flow. To achieve...
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5342593 |
Process for absorption of sulfur compounds from fluids
Sulfur dioxide is removed from a fluid containing SO 2 by employing as an absorbent therefor an aqueous solution of compound represented by Formula I: ##STR1## wherein X is --O--, --NR 1 --, or...
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5284557 |
Method for desulfurizing exhaust smoke
A method for desulfurizing an exhaust gas containing SO 2 and NO x in accordance with a wet lime process, the aforesaid desulfurizing method being characterized by comprising the steps of drawing...
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