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7381393 |
Process for sulfur removal suitable for treating high-pressure gas streams
H 2 S-containing gases, particularly such gases at elevated pressure, are treated to remove H 2 S by reaction in a liquid medium with SO 2 , the SO 2 being present in stoichiometric excess with...
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7374742 |
Direct sulfur recovery system
The present invention provides a method for removing sulfur species from a gas stream without the use of a sulfur species removal process, such as an amine scrub. The sulfur species are removed by...
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7357908 |
Apparatus and catalytic partial oxidation process for recovering sulfur from an H2S-containing gas stream
The disclosed sulfur recovery system and process avoid some of the operational problems of conventional Claus plants and processes by replacing the reaction burner and furnace tube of a...
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7351392 |
Process for the high recovery efficiency of sulfur from an acid gas stream
A combined process for the recovery of sulfur from an acid gas stream. The combined process includes both a Claus unit and a unit for treating the Claus tail gas with caustic to remove hydrogen...
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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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7282193 |
Method for energy recovery from hydrogen sulfide
A method for producing sulfur and energy from an acid gas stream containing hydrogen sulfide by partially combusting the acid gas stream to produce a combustion product gas, mixing a sulfur dioxide...
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7250149 |
Sulfur gas treatment process
The present invention comprises a method of treating an off-gas stream from a refining process to remove sulfur compounds. A portion of the off-gas stream containing hydrogen sulfide is injected at...
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7226572 |
Compact sulfur recovery plant and process
A compact sulfur recovery system is disclosed which comprises a primary structure including a catalytic partial oxidation reaction zone, a first temperature-control zone, a first Claus catalytic...
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7157070 |
Method for purifying gas containing hydrocarbons
A hydrocarbon gas containing H 2 S, mercaptans and CO 2 is fed to an absorption plant operated at a pressure of 20 to 80 bar and supplied with a selective solvent, a solvent stream loaded with H 2...
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7067101 |
Water wall boiler for air and oxygen fired Claus sulfur recovery units
The thermal combustion step of the modified Claus process is carried out in a water-wall boiler instead of a refractory-lined reaction furnace. The water-wall boiler replaces the conventional...
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7060233 |
Process for the simultaneous removal of sulfur and mercury
A process for removing hydrogen sulfide, other sulfur-containing compounds and/or sulfur and mercury from a gas stream contaminated with mercury, hydrogen sulfide or both. The method comprises the...
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7055395 |
Sulfur deposition control method and related control algorithm
A method for detecting and controlling the elemental sulfur deposition on pressure reducing gas fuel control valves in cases where the sulfur deposition results from a temperature drop during...
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7036461 |
Waste-heat boiler for a Clause plant
The invention relates to a waste-heat boiler ( 3 ) for a Claus plant, comprising a steam generation chamber that is surrounded by a pressure-proof jacket ( 14 ), a long tube bundle ( 18 ) of heat...
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6962683 |
Method of removing and recovering elemental sulfur from highly reducing gas streams containing sulfur gases
A method is provided for removal of sulfur gases and recovery of elemental sulfur from sulfur gas containing supply streams, such as syngas or coal gas, by contacting the supply stream with a...
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6962680 |
Method and apparatus for removing sulfur compound in gas containing hydrogen sulfide, mercaptans, carbon dioxide and aromatic hydrocarbon
A method for removing sulfur compounds including transferring the impurity gas to a concentration process in which the impurity gas is separated into a concentrated gas containing hydrogen sulfide...
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6960548 |
Method for regenerating used absorbents derived from treatment of thermal generator fumes
Process and device for regeneration of a used absorbent from a desulfurization zone or from the desulfurization of a gas containing sulfur oxides, comprising regeneration simultaneously with...
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6919059 |
Process and apparatus for recovering sulphur from a gas stream containing sulphide
Oxygen or oxygen-enriched air is employed to support combustion in furnaces ( 16 ) and ( 26 ) of part of the hydrogen sulphide content of a first feed gas stream. Sulphur vapour is extracted in...
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6892473 |
Process for removing water from ammonia
This invention relates to an improvement in a process for removing water from a hydride gas, and particularly ammonia, by contacting the hydride gas with a drying agent under conditions for...
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6890498 |
Burner and method for partly oxidising a gas stream comprising hydrogen sulphide and ammonia
A gas burner for use with a Claus furnace made up of at least five concentric tubes and the spaces formed between them. The diameters of the tubes increase radially outward so that the first tube...
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6800261 |
Process for the removal of sulphur compounds from gases
The invention is directed to a process for the catalytic reduction of sulphur dioxide from a gas mixture at least containing 10 vol. % of water, in which process the gas mixture is passed over a...
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6780392 |
Method and device for converting hydrogen sulfide into elemental sulfur
In a process for producing elemental sulfur by combustion of hydrogen sulfide or a hydrogen-sulfide-containing gas, in particular a Claus process, the hydrogen sulfide or the...
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6776974 |
Process for the production of sulfur
A process is provided for producing elemental sulfur from hydrogen sulfide contained in an acid gas feed stream wherein hydrogen sulfide and sulfur dioxide are reacted in a catalytic only sulfur...
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6652827 |
Process for the recovery of sulphur from a hydrogen sulphide, containing gas
The invention is directed to a process for the recovery of sulphur from a hydrogen sulphide containing gas, which process comprises; i) oxidizing part of the hydrogen sulphide in a gaseous stream...
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6645459 |
Method of recovering sulfurous components in a sulfur-recovery process
H 2 S is removed from an H 2 S-rich gas, and sulfur is produced, by a process in which the H 2 S-rich gas is reacted with SO 2 in a reactor in the presence of an organic solvent and a catalyst, an...
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6616908 |
Treatment of a gas stream containing hydrogen sulphide
Sour gas containing hydrogen sulphide has hydrogen sulphide absorbed therefrom in an absorbent in a vessel 4 . A hydrogen sulphide rich gas stream is formed by desorbing hydrogen sulphide from the...
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6610264 |
Process and system for desulfurizing a gas stream
A process and system is disclosed for removing sulfur from tail-gas emitted from a Claus sulfur recovery process. First, the tail-gas is oxidized so as to convert sulfur therein to sulfur oxides....
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6569398 |
Method for treating hydrogen sulfide-containing waste gases
Disclosed is a method in which hydrogen sulfide-containing liquid sulfur is introduced into a containment vessel to partially fill the containment vessel and create a hydrogen sulfide-containing...
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6551570 |
Hydrogen sulfide removal process
Hydrogen sulfide is removed from gas streams by reaction with sulfur dioxide to produce sulfur. The reaction is effected in a reaction medium comprising a non-aqueous Lewis base with a pK b value...
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6531109 |
Treatment of a combustible gas stream
A process and apparatus for recovering sulphur from a combustible gas stream comprising hydrogen sulphide, air, commercially pure oxygen or oxygen-enriched air. The combustible gas stream are fed...
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6517801 |
Treatment of gas streams containing hydrogen sulphide
A feed gas stream containing hydrogen sulphide is subjected in a furnace 6 to reactions in which part of the hydrogen sulphide is burned to form sulphur dioxide, and is which the sulphur dioxide...
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6495117 |
Process for recovering sulfur from H2S-bearing gas
Elemental sulfur is recovered from the hydrogen sulfide present in natural gases and other process gases by treating the hydrogen sulfide-containing gas in a series arrangement of a liquid-phase...
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6444185 |
Process for recovering as sulfur the compounds H2S, SO2, COS and/or CS2 in a tail gas from a sulfur plant
A process is provided to recover residual H 2 S, SO 2 , COS and CS 2 in the tail gas from a sulphur recovery process. The tail gas is oxidized and hydrolyzed at a temperature of from 180° C. to...
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6413488 |
Post conversion of a gas containing hydrogen sulphide, the elimination of sulphur crystallized by cooling
A process and an apparatus are described for treatment of a gas containing hydrogen sulphide and sulphur dioxide, for example a Claus plant tail gas, in which the gas is brought into contact with...
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6287535 |
Treatment of combustible gas streams
A first combustible gas stream containing hydrogen sulphide is subjected to treatment in a first Claus plant including a first thermal Claus stage. Part of the hydrogen sulphide content of a second...
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6280698 |
Removal of by-products in method for processing a gas containing hydrogen sulfide and sulfur dioxide
A method for processing a gas, such as a Claus tail gas, containing at least hydrogen sulfide (H 2 S) and at least sulfur dioxide (SO 2 ), includes the steps of contacting the gas with a liquid...
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6214311 |
Process for direct reduction of sulfur compounds to elemental sulfur in combination with the claus process
The present invention is a process wherein a process gas comprising at least SO2 and H2S is reacted across a stage of SO2 reducing catalyst, thereby obtaining high conversion of at least the SO2 to...
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6113872 |
Process for removing sulfur compounds out of a gas
A method for removing the sulphur compounds H 2 S, SO 2 and at least one of COS and CS 2 contained in a waste gas is provided. In this method, the waste gas is catalytically hydrolyzed to form a...
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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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6083471 |
Method and catalyst for catalytically oxidizing a low concentration of H.sub.2 S in a gas to give sulphur
A process for catalytically oxidizing the H 2 S present at low concentration in a gas to sulphur wherein the gas together with a gas containing free oxygen in a quantity to provide and O 2 to H 2...
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6056936 |
Catalytic desulphurization process for a gas containing H.sub.2 S and SO.sub.2 compounds and catalyst for implementing said process
A process is provided for the catalytic removal of sulfur compounds, such as hydrogen sulfide and sulfur dioxide, out of a gas by contacting the gas with catalyst composition containing a silicon...
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6042803 |
Method of reacting hydrogen sulfide to produce sulfur
A method is provided for converting the hydrogen sulfide in a hydrogen sulfide containing feed gas into elemental sulfur by oxidizing the hydrogen sulfide with an oxygen containing gas to produce...
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6030597 |
Process for treating H.sub.2 S containing streams
This invention is directed to an improved process for conversion of H2S to sulfur, using MOST(Mobil Offgas Sulfur Treatment) catalyst or sorbent. The sorbent is typically a magnesium-aluminate...
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5965100 |
Process for recovery of sulfur from an acid gas stream
A gas stream containing hydrogen sulfide is combusted in a furnace to form a gas having a hydrogen sulfide to sulfur dioxide ratio of at least three to one. The gas is contacted with a conventional...
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5958359 |
Process for treating H.sub.2 S-lean streams, with recycle of SOx from burner
This invention is directed to an improved process for conversion of H 2 S to sulfur, using MOST(Mobil Offgas Sulfur Treatment) catalyst or sorbent. The sorbent is typically a magnesium-aluminate...
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5951961 |
Process for treating a gas containing hydrogen sulphide and sulphur dioxide, comprising a step for eliminating sulphur by cooling a gaseous effluent
In a process and apparatus for treating a gas containing hydrogen sulphide and sulphur dioxide, the gas is contacted with an organic solvent (1)for example, a polyalkylene glycol, containing a...
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5935547 |
Process for treating gas containing hydrogen sulfide and sulphur dioxide, comprising a step for depleting the recycled solvent in sulphur
In a process for treating a gas containing hydrogen sulphide and sulphur dioxide, such as Claus plant tail gas, to substantially reduce emission of sulphur vapor in the treated gases, the process a...
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5928620 |
Process employing single-stage reactor for recovering sulfur from H.sub.2 S -
Elemental sulfur is recovered from the hydrogen sulfide present in natural gas or other process gases by passing the hydrogen sulfide contaminated gas through a hydrogen sulfide absorber so as to...
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5904910 |
Method for producing sulfur and hydrogen from a gaseous stream containing hydrogen sulfide and ammonia
A method for producing hydrogen and sulfur from a first gaseous mixture containing hydrogen sulfide and ammonia by separating ammonia from the first gaseous mixture to produce a second gaseous...
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5897850 |
Process for removing elemental sulfur from a gas stream
A process for the recovery of sulfur from a hydrogen sulfide containing gas, comprising oxidizing hydrogen sulfide with oxygen, and then reacting the product gas of this oxidation further by using...
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5863513 |
Treatment of gas
An elevated pressure nitrogen stream from an air separation plant is used to provide cooling for one or more sulphur condensers in an oxygen-enhanced Claus process for recovering sulphur.
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