Thyssenkrupp Uhde Gmbh

Uhde Gmbh

Thyssenkrupp Industrial Solutions Ag

Tyssenkrupp Uhde Gmbh

Johannes Menzel

Holger Thielert

Georg Saecker

Max Heinritz-Adrian

Olaf Von Morstein

Sascha Wenzel

Alexander Snell

Natarajan Thiagarajan

Georg Säcker

The invention relates to a method for removing absorbable gases from pressurized industrial gases contaminated with absorbable gases, without supplying cooling energy. The method includes an industrial gas that is to be purified is purified by an absorbent solvent, the absorbable gases situated therein being removed by the solvent, and the loaded solvent is passed to a stripping stage in which the absorbed gas is desorbed again, and the desorbed gas is compressed, in such a manner that it is heated by the compression, whereupon it is cooled to standard temperature by means of cooling water or cooling air, then expanded, in such a manner that it cools and this cooled desorption gas is again returned to the industrial gas, in such a manner that said industrial gas is also cooled by the admixture.

Method and apparatus for removing absorbable gases from pressurized industrial gases contaminated with absorbable gases, without supplying cooling energy

A method for removing components to be separated from industrial gases using an absorption and desorption processes having liquid absorbents. At least one absorption device and one desorption device are provided, at least a part of the laden solution leaving the absorption device is diverted before being heated and delivered to the head of the heat transfer section. The laden partial stream is heated by the steam rising from the lower part of the desorption device through heat exchange in the heat transfer section. The remaining stream of cold, laden solution leaving the absorption device is expanded by so the relief valve and the heat exchanger into a pressure relief vessel, such that the stream leaving the heat exchanger separates into a liquid and a gaseous state. The pressure in the pressure relief vessel pressure is lowered so that the total energy demand in absorption and desorption processes is reduced.

Heat recovery in absorption and desorption processes

Process for removal of salts thermally non-regenerable in a temperature range from 0&#xb0; C. to 200&#xb0; C., from organic solvents in an aqueous solution by evaporation, the normal boiling point of organic solvents being higher than that of water, and by enriching the organic constituents existing in the solvent as well as the heat stable salts existing therein in a liquid phase forming by evaporation of water and a portion of the organic constituents of a first vessel, and discharging an evolving vaporous phase from the first vessel. In particular, the liquid phase formed in the first vessel is passed into a second vessel, water in vaporous and/or liquid form being passed into the second vessel, water and another portion of the organic constituents contained in the solvent being evaporated and forming a vaporous phase which is discharged from the second vessel, the heat stable salts being enriched in concentration in the liquid phase forming in the second vessel, and wherein a partial stream of the liquid phase formed in the second vessel is discharged from the second vessel.

Removal of thermal stable salts from organic solvents

A method for removing high-boiling hydrocarbons from water-soluble solvent flows, wherein said solvent flows are produced in industrial processes which circulate a solvent as a part of the process, and the solvent must be periodically or permanently freed of high-boiling hydrocarbons which influence the quality or the desired properties of the solvent in an unwanted way, and water is added for carrying out the method in a phase separator, so that the high-boiling hydrocarbons are separated off because of their immiscibility with water, and then the water-miscible phase containing water and solvent is returned to the process. According to the invention, the proportion of high-boiling hydrocarbons in circulating solvents in an industrial process can be kept permanently low.

Method for removing high-boiling hydrocarbons from solvent flows

The invention relates to a method and apparatus for reducing nitrosamines, formed in removal of COfrom off-gases by means of an aqueous amine solution. A substream of the aqueous amine solution, loaded with nitrosamines, is branched off from a washing fluid circulation and is concentrated by evaporating water and low-boiling constituents. The concentrated amine solution is retained at the boiling point in a unit in which a liquid phase and a vapor phase are in contact to establish a vapor/fluid equilibrium between the phases. The vapor phase is irradiated with UV light, which decomposes nitrosamines entering the vapor phase. Following decomposition of nitrosamines, the concentrated amine solution is recycled to the washing fluid circulation for further use in the scrubber.

Method and apparatus for decomposing nitrosamines formed in removing CO2 from flue gases using an aqueous amine solution

A methane-rich gas from synthesis gas is made in a methane reactor with a row of methanation stages and, at an upstream end of the row of methanation stages, a CO conversion stage. An incoming stream of synthesis gas containing CO and His split into a plurality of partial streams, one of which is fed to the reactor upstream of the CO conversion stage. Each of the other partial syngas streams is fed to the reactor upstream of a respective one of the methanation stages such that methanation takes place in each of the methanation stages and gas exits from the stages and mixes with the partial syngas stream being fed to the next downstream stage. A plurality of partial streams are diverted from a product-gas stream issuing from the furthest downstream stage and are each fed to the reactor upstream of a respective one of the methanation stages.

Method and apparatus for making a methane-rich gas from syngas

The invention relates to a method for simultaneously producing iron and a crude syngas containing CO and Hby means of a blast furnace that is charged with iron ore and carbon-containing reducing agents. The amount of carbon-containing reducing agents fed to the blast furnace is greater than the amount of fuel required for producing the iron. Technically pure oxygen is fed into the blast furnace for the blast furnace process and for producing the crude syngas. In addition, COand/or steam are fed to the blast furnace in order to control the ratio between CO and Hin the crude syngas discharged from the blast furnace as top gas and/or moderate the temperature at which the oxygen is injected.

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A method for removing acid gases from a fluid flow using an absorbent including an aqueous solution with at least two different amines. An amine in a proportion of greater than 50 wt. % of the total amine amount in the aqueous solution is the first amine component in the aqueous solution, and a sterically hindered amine in a proportion of less than 50 wt. % is the second amine component in the aqueous solution. The fluid flow is brought into contact with the absorbent at a partial pressure of &#x3c;200 mbar.

Removal of carbon dioxide from gases by aqueous amine solutions containing a sterically hindered amine

The invention relates to a process for producing a methane-containing gas from synthesis gas, wherein a synthesis gas containing carbon monoxide and hydrogen is fed for methanation to a reactor system () having a catalyst material, wherein the process gas stream leaving the reactor system () is divided into a product gas stream and a recycle gas stream, and wherein the recycle gas stream, for compensation of the pressure drop, is transported through an ejector () and for cooling is passed together with the synthesis gas into the reactor system (). According to the invention, the product gas stream is compressed to a pressure which is greater than the pressure of the synthesis gas that is fed to the reactor system (). Either compressed product gas or industrial gas from an industrial gas pipe system () is fed as propellant medium to the ejector (). The invention also relates to a methane production plant for carrying out the process.

Method of and plant for making a methane-containing gas from syngas

The invention relates to a method and a system for operating a Fischer-Tropsch synthesis, wherein a feed gas comprising CO and Hfrom coal gasification () is desulfurized and subsequently fed into a Fischer-Tropsch synthesis as an input gas, wherein hydrocarbons are formed from carbonic oxides and hydrogen by catalytic reactions. The hydrocarbons are separated as liquid products (), and a gas flow comprising CO and CO2 exiting the Fischer-Tropsch synthesis unit () is compressed and fed into a conversion stage, wherein CO and steam are transformed into Hand CO. In the method according to the invention, the gas exiting the conversion stage is fed back into the Fischer-Tropsch synthesis unit as a gas rich in H, together with the desulfurized input gas, after the gas is prepared in that COand/or further components other than Hare removed.

Method for operating a Fischer-Tropsch synthesis

A process is disclosed for removing acid gases from a gas stream, in particular from a natural gas stream, synthesis gas stream or the like, wherein the acid gases are absorbed from the gas stream by at least one absorbent. The absorbent used is a mixture of a physical scrubbing agent, a chemical scrubbing agent and water. The absorbent comprises more than 60% by weight of the physical scrubbing medium, wherein the physical scrubbing medium used is a morpholine derivative and a chemical scrubbing agent based on at least one aliphatic amine compound which includes a polyethylene glycol substituted amine.

Process for removing acid gases from a gas stream

A method of removing acid gases from raw gas is disclosed in which the raw gas is supplied to an absorption column where it is contacted with a physical absorption agent, having a boiling point lower than 100&#xb0; C. at atmospheric pressure, under elevated operating pressure to load, the physical absorption agent with acid gases and usable gases and then the physical absorption agent loaded with acid gases and usable gases is driven from the absorption column at its sump while drawing off at the head of the absorption column a purified top gas containing up to a few ppm of acid-gas components. Following the absorption, the physical absorption agent undergoes stripping to remove usable gases, and regeneration to remove the acid gases as well as to provide a regenerated physical absorbent which may be used to treat additional raw gas.

Method for purifying gases and obtaining acid gases

An H- and CO-containing synthesis gas is made by separating coke-oven gas from a coke-oven process into hydrogen and a residual gas stream containing hydrocarbons and obtaining a CO-rich synthesis-gas stream from a top gas of a blast furnace. The hydrogen separated from the coke-oven gas is fed into the CO-rich synthesis gas stream obtained from the top gas of a blast furnace to make the synthesis gas, and the hydrocarbon-containing residual gas stream is fed into the blast furnace as feedstock.

Syngas production method

A method and apparatus for processing a sour gas rich in carbon dioxide in a Claus process, so sulfur compounds are removed by a selective solvent in a gas scrubbing process. Sulfur components and carbon dioxide, are separated into at least two sour gas fractions, wherein at least one sour gas fraction having a higher content of sulfur components is obtained, wherein the fraction having the highest hydrogen sulfide content is introduced in the thermal reaction stage of the Claus furnace with a gas containing oxygen by means of a burner. The sulfur is converted to sulfur dioxide in the thermal reaction stage of the Claus furnace and exhaust gases are discharged into the closed Claus reaction chamber behind the burner. The remaining sour gas fractions stripped of sulfur components are fed to the Claus reaction chamber and are mixed with the combustion gases leaving the burner.

Method and device for processing sour gas rich in carbon dioxide in a Claus process

The invention relates to the use of a liquid, containing 0.1 to 100% of an amine or several amines of formula HN&#x2014;CH(CHR)&#x2014;(OCH(CHR))&#x2014;OR, where R=Cto Calkyl, R=H or CH, R=H or CH, x=0 to 3, y=0 to 3, z=0 to 10 and 0 to 99.9% of any further solvent including piperazine and/or water for separating acid gas components from technical gases.

Growing community of inventors

Waltrop, Germany

Johannes Menzel