Siemens Aktiengesellschaft

Siemens Energy Global Gmbh & Co. Kg

Rüdiger Schneider

Ralph Joh

Henning Schramm

Ansgar Kursawe

Markus Kinzl

Stefan Hauke

Albert Reichl

Rainald Forbert

Bjorn Fischer

Earl Lawrence Vincent Goetheer

Gerhard Zimmermann

Nicolas Vortmeyer

Dirk Verdoes

Johannes Van Der Meer

Mike Rost

Jenny Larfeldt

Benjamin Häfner

Erwin Johannes Martinus Giling

Kevin Brechtel

Christoph Starke

Diego Andres Kuettel

Frank Olschewski

Björn Fischer

Ingo Schillgalies

Torsten Schliepdiek

Peter Richter

Erwin Johannes Martinus Gilling

Jan Harm Urbanus

A method for the desulphurisation of a gas stream containing hydrogen sulphide, in particular a combustion gas stream used for combustion in a gas turbine, wherein the gas stream is brought into contact with a scrubbing medium containing a catalyst to absorb the hydrogen sulphide, forming elementary sulphur; the catalyst is reduced on formation of the elementary sulphur; the scrubbing medium containing the reduced catalyst is fed to a regeneration stage in which the reduced catalyst is regenerated by oxidation with an oxygen-containing gas which is fed to the regeneration stage; the oxygen-containing gas is fed to the regeneration stage from a compression stage of the gas turbine; and the gas which is depleted of oxygen during regeneration of the catalyst is fed to at least one turbine stage fluidically connected downstream of the compression stage.

Method and device for the desulphurisation of a gas stream containing hydrogen sulphide

A method and device for the desulphurisation of a hydrogen sulphide-containing gas flow, in particular for combustion in a gas turbine, wherein the gas flow is brought into contact with a washing agent containing a catalytically active component for the absorption of the hydrogen sulphide and forming elementary sulphur, wherein the catalytically active component is reduced in the formation of the elementary sulphur, wherein the washing medium containing the reduced catalytically active component is supplied to a regeneration stage, in which the reduced catalytically active component is converted back via oxidation with an oxygen-containing gas supplied to the regeneration stage, and wherein the oxygen-containing gas is supplied to the regeneration stage from a compressor of a gas turbine. Air from the compressor of a gas turbine is used for purifying a washing medium used for the desulphurisation of a gas flow.

Method and device for the desulphurisation of a gas flow

A method for separating carbon dioxide from a gas stream, in particular from a flue gas stream, wherein, a gas stream is brought into contact with a washing medium in an absorber of a separation device and the carbon dioxide contained in the gas stream is separated; the charged washing medium is supplied to a desorber of the separation device to release the carbon dioxide; a vapor stream is removed from the desorber and is supplied to a cooling unit to form a condensate; degradation products, in particular nitrosamines, contained in at least a partial stream of the condensate are photolytically decomposed to decomposition products; at least the decomposition products, in particular nitrites and amines, are removed; and at least a partial stream of the condensate is returned to the desorber. A corresponding separation device separates carbon dioxide from a gas stream.

Method and device for separating carbon dioxide from a gas stream and for removing degradation products in the washing medium by photolytic decomposition

A processing unit for a liquid washing medium contaminated with sulphur oxides and/or nitrogen oxides, has an evaporation stage for concentrating the active components of the washing medium by an evaporator and/or by a heat exchanger, and has a collecting tank connected to the evaporator and/or to the heat exchanger. The collecting tank is configured as a crystallizer for removing sulfur oxides from the washing medium by crystallization of a sulphate, in particular of potassium sulphate. A separating device for carbon dioxide has a corresponding processing unit, and a method for processing a washing medium contaminated with sulphur oxides and/or nitrogen oxides uses a corresponding processing unit.

Processing unit for a washing medium contaminated with sulphur oxides and/or nitrogen oxides

A method for separating carbon dioxide from a gas flow, in particular from a flue gas flow, where a gas flow is brought in contact with a scrubbing medium in an absorber of a separating device and carbon dioxide contained in the gas flow is separated, the loaded scrubbing medium is fed to a desorber of the separating device in order to release the carbon dioxide, a vapor flow is drawn from the desorber and is fed to a cooling device in order to form condensate, and the condensate formed in the cooling device is at least partially fed to a purifying device, in which degradation products contained in the condensate are removed by reverse osmosis and/or by an ion exchanger. A separating device is adapted for separating carbon dioxide from a gas flow.

Method for separating carbon dioxide from a gas flow, in particular from a flue gas flow, and separating device for separating carbon dioxide from a gas flow, in particular from a flue gas flow

A method for the treatment of a gas stream, wherein before the combustion of the gas stream, hydrogen sulfide is separated out of the gas stream in a first absorber by an absorption medium, the treated gas stream purified of hydrogen sulfide is burnt in a combustion apparatus, the carbon dioxide contained in the exhaust gas of the burnt gas stream after combustion is separated in a second absorber by an absorption medium, and the separated hydrogen sulfide and carbon dioxide are separated in at least one desorber from the absorption medium for the regeneration of the latter. The same absorption medium separates the hydrogen sulfide out of the gas stream and the carbon dioxide out of the exhaust gas. A corresponding device for the treatment of a gas stream has a first absorber and a second absorber flow-connected to one another for the exchange of absorption medium.

Method and device for the treatment of a gas stream, in particular for the treatment of a natural gas stream

A scrubbing solution is provided having an absorbent for carbon dioxide based on amines, or ethanolamines, or amino acid salts, or potash, or a combination thereof, and an additive activating the absorption rate, wherein the activating additive is a germanium dioxide. A corresponding method for accelerating the absorption of carbon dioxide is also provided, wherein a carbon dioxide-containing gas is contacted with such a scrubbing solution, wherein the carbon dioxide is physically dissolved in the scrubbing solution and is chemically absorbed with the participation of the absorbent, and wherein the germanium dioxide acts catalytically for at least one reaction step of the chemical absorption of the carbon dioxide.

Scrubbing solution for absorption of carbon dioxide and method for accelerating the absorption by germanium dioxide

A device and method for separating off carbon dioxide is provided, including an absorption unit, desorption unit assigned thereto and a separation unit for separating off salts from a scrubbing solution. The absorption and desorption units are connected to each other via a first conduit for a regenerated scrubbing solution and a second conduit for a loaded scrubbing solution. The separation unit includes a crystallizer for forming salt crystals and a first separator unit on the downstream side for separating off salt crystals. A separation unit is provided for separating off salts from a scrubbing solution, having a crystallizer and a first separator unit downstream thereof. The crystallizer has a crystallization chamber for forming salt crystals and a countercurrent classifier for separating salt crystals according to particle size. A first branch conduit is connected to the crystallization chamber, which opens out into the countercurrent classifier via a second separator unit.

Separation device for carbon dioxide, method for the operation thereof, and separating unit

A method for processing an amine-based solvent contaminated by the introduction of sulfur oxides is provided. A potassium compound is introduced into a contaminated solvent, and the contaminated solvent is cooled so that a solubility of a potassium sulfate becomes less than a specified concentration of potassium sulfate. Further, an oxidizing agent is introduced into the contaminated solvent so that a potassium sulfite is oxidized to potassium sulfate. The potassium sulfate is filtered out, wherein a prepared solvent is formed. Further, a device for processing an amine-based, sulfur oxide-contaminated solvent is provided.

Preparation of an amine based solvent contaminated by the introduction of sulfur oxides

A carbon dioxide separation process for a fossil-fueled power station process, including an absorption process and a desorption process, the carbon dioxide separation process includes when a special operating state which deviates from the normal operating state, opening a first bypass so that regenerated solvent from the desorption process is at least partially fed back again into the desorption process; and opening a second bypass so that a laden solvent from the absorption process is at least partially fed back again into the absorption process.

Method and apparatus for separation of carbon dioxide from an off-gas from a fossil-fueled power station

A solvent for selective absorption of COfrom the flue gas from a combustion plant is provided. The solvent includes an aqueous solution of a secondary amino acid salt as an active scrubbing substance and an additive, the additive including a primary amino acid salt. A process for providing an absorption liquid is also provided as well as a process for activating a solvent.

Solvent, process for providing an absorption liquid, use of the solvent and process for activating the solvent

A method for treating a contaminated alkaline amino acid salt solution is provided. First, carbon dioxide is introduced into the amino acid salt solution, with the result that carbonate or carbonate salts is or are precipitated, these being filtered off. The remaining filtrate is then cooled, amino acid or amino acid salts being crystallized out and likewise being filtered off. The amino acid or amino acid salt is then dissolved again, with the result that a treated amino acid salt solution is recovered.

Method and device for treating a contaminated alkaline amino acid saline solution

An absorbent agent is provided. The absorbent agent is particularly for separating carbon dioxide from the flue gas of a fossil-fired combustion device. The absorbent agent comprises a two-component mixture including a free amino acid and an amino acid salt, wherein the free amino acid exhibits a surplus compared to the amino acid salt based on the molar concentration. This creates variability in the PCBN value, which may be attained through different absorption and desorption process temperatures. A method for manufacturing the absorbent agent is also provided.

Absorbing agent, method for manufacturing an absorbing agent and use of an absorbent agent

A method for separating carbon dioxide from a flue gas of a fossil fuel-operated power plant is provided. In the method, a fossil fuel is initially burned in a combustion process, wherein a hot waste gas containing carbon dioxide is produced. In a next process step, waste gas containing carbon dioxide is brought into contact with an absorption medium in an absorption process, wherein carbon dioxide is absorbed by the absorption medium, thus forming a charged absorption medium. Next, gaseous carbon dioxide is thermally expelled from the charged absorption medium in a desorption process. For this purpose, a vapor is supplied to the desorption process, the vapor is injected into the charged absorption medium, wherein the condensation heat released by the condensation of the vapor is transferred to the charged absorption medium, and the partial pressure of the carbon dioxide is simultaneously reduced in the desorption unit.

Method and device for separating carbon dioxide from a waste gas of a fossil fuel-operated power plant

A method and corresponding apparatus for separation of carbon dioxide from an exhaust gas of a fossil-fired power are provided. In an absorption process, the exhaust gas containing carbon dioxide is brought into contact with an absorption medium so that the absorption medium is laden with carbon dioxide. In a desorption process, vapor from a water/steam circuit of the fossil-fired power plant is heated, wherein a laden absorption medium is regenerated. In a subsequent expansion process, the regenerated absorption medium is expanded so that a vapor and an expanded absorption medium are formed, wherein the vapor is recirculated into the desorption process. The laden absorption medium is divided into a first part stream and a second part stream. Only the second part stream is brought into heat-exchanging contact with the expanded absorption medium. The first and second part streams are supplied to the desorption process at different process stages.

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Rüdiger Schneider