Abstract: A method for producing a target compound includes distributing a feed mixture at a temperature in a first temperature range to a plurality of parallel reaction tubes of a shell-and-tube reactor, and subjecting the feed mixture in first tube sections of the reaction tubes to heating to a temperature in a second temperature range and in second tube sections of the reaction tubes arranged downstream of the first tube sections to oxidative catalytic conversion using one or more catalysts. A gas mixture flowing out of the second tube sections is brought into contact in third tube sections arranged downstream of the second tube sections with a catalyst which has a volumetric activity below the highest volumetric activity of the one or the plurality of catalysts arranged in the second tube sections. A gas mixture from the third tube sections is withdrawn from the shell-and-tube reactor without further catalytic conversion.

Abstract: A method for producing a target compound, includes distributing feed mixture at a temperature in a first temperature range to a plurality of parallel reaction tubes of a shell-and-tube reactor. The method further includes subjecting the feed mixture in first tube sections of the reaction tubes to heating to a temperature in a second temperature range, and in second tube sections of the reaction tubes arranged downstream of the first tube sections to oxidative catalytic conversion using one or more catalysts arranged in the second tube sections. The heating is performed, at least in part, using a catalyst arranged in the first tube sections and having a light-off temperature in the first temperature range.

Abstract: A process for producing propylene in which a first material stream is provided using a steam cracking method and one or more fractionations and is rich in ethylene, in which a second material stream containing carbon monoxide and hydrogen is provided using a synthesis gas production method, and in which at least a part of the ethylene from the first material stream is reacted with at least a part of the carbon monoxide and the hydrogen from the second material stream to form an aldehyde using a hydroformylation to obtain a third material stream, and in which at least a part of the aldehyde in the third material stream is converted to the propylene, wherein the ethylene is provided by means of the steam cracking method in a first component mixture, wherein the propylene is provided in a second component mixture.

Abstract: Disclosed is a method for the producingtiona target compoundby oxidative coupling of methane. A starting gas mixture is provided which contains an olefin, carbon monoxide, carbon dioxide and optionally hydrogen, wherein the olefin is subjected to hydroformylation with the carbon monoxide and the hydrogen of the starting mixture to obtain an aldehyde, wherein the paraffin and the olefin have a carbon chain with a first carbon number and the aldehyde has a carbon chain with a second carbon number which is greater by one than the first carbon number. The carbon dioxide present in the starting mixture is removed upstream and/or downstream of the hydroformylation. The carbon dioxide is subjected to dry reforming with methane to obtain carbon monoxide, and that the carbon monoxide subjected to hydroformylation comprises at least part of the carbon monoxide obtained in the dry reforming .

Abstract: Disclosed is a method for producing a target compound, in which a first gas mixture includes an olefin having a first carbon number and carbon monoxide, a second gas mixture formed using the first gas mixture and containing the olefin, hydrogen and carbon monoxide, is subjected to conversion steps to obtain a third gas mixture containing a compound with a second carbon number and at least carbon monoxide The conversion includes hydroformylation. The second carbon number is one greater than the first carbon number. Using at least a portion of the third gas mixture, a fourth gas mixture which is depleted in the compound has three carbon atoms, is enriched in carbon monoxide, and is formed using at least a portion of the third gas mixture The carbon monoxide in at least a portion of the fourth gas mixture is subjected to a water gas shift to form hydrogen and carbon dioxide, and that the hydrogen formed in the water gas shift is used in the formation of the second gas mixture.

Abstract: The invention relates to a method (100) for producing a target compound, wherein a paraffin is subjected to an oxidative dehydrogenation (1) with oxygen to obtain an olefin, and wherein the olefin is subjected to a hydroformylation (2) with carbon monoxide to obtain an aldehyde, wherein the paraffin and the olefin have a carbon chain having a first carbon number and the aldehyde has a carbon chain having a second carbon number which is one greater than the first carbon number. It is provided that carbon dioxide is formed as a by-product in the oxidative dehydrogenation (1), that the carbon dioxide is subjected to dry reforming (3) at least in part with methane to obtain carbon monoxide and hydrogen, and that the carbon monoxide obtained in the dry reforming (3) and/or the hydrogen obtained in the dry reforming (3) is supplied to the hydroformylation (2). A corresponding installation is also the subject matter of the invention.

Abstract: The invention relates to a process (100), in which, with the inclusion of an air-separation method (10), an oxygen-rich substance flow (b) is formed, which is subjected with a methane-rich substance flow (e) to a method for oxidative coupling of methane (20). From a product flow (e) of the method for oxidative coupling of methane (20), a carbon-dioxide-rich substance flow (i) is formed and subjected to a urea-synthesis method (50). A corresponding combined plant also forms the subject matter of the invention.

Abstract: The invention relates to a process (100), in which, with the inclusion of an air-separation method (10), an oxygen-rich substance flow (b) is formed, which, with a methane-rich substance flow (e), is subjected to a method for oxidative methane coupling. From the product flow (e) of the method for oxidative coupling of methane (20), one or more substance flows (f, i) are formed, which are subjected to one or more synthesis methods (40, 50) for the production of one or more nitrogen-containing synthesis products.

Abstract: A method (100) for producing olefins is proposed, wherein a first gas mixture (b) is produced by means of a steam cracking process (1) and a second gas mixture (s) is produced by means of an oxygenate-to-olefin process (2), the first gas mixture (b) and the second gas mixture (s) each containing at least hydrocarbons with one to four carbon atoms.

Abstract: A method (100) for obtaining olefins is proposed, wherein a first gas mixture (b), which is produced by a steam cracking process (1), is at least partially used to form a first separation feedstock (f) which contains hydrocarbons with one to five carbon atoms, and from which at least a first separation product (g) and a second separation product (h, o) are produced, the first separation product (g) containing at least the greater proportion of the hydrocarbons with one carbon atom and of the hydrocarbons with two carbon atoms contained in the first separation feedstock (f), and the second separation product (h, o) containing at least the greater proportion of the hydrocarbons with four carbon atoms and of the hydrocarbons with five carbon atoms contained in the first separation feedstock (f), and wherein a second gas mixture (r) which is produced by an oxygenate-to-olefin process (2) is used at least partially to form a second separation feedstock (t) which contains hydrocarbons with one to five carbon atoms,

Abstract: The invention relates to a method for processing coke oven gas, said coke oven gas containing hydrogen, wherein the coke oven gas is at least partially integrated into a method for producing dimethyl ether in conjunction with a gas containing carbon monoxide and/or carbon dioxide, whereby a DME-containing product gas is formed. At the outset of the method for the formation of dimethyl ether, a ratio of hydrogen to carbon monoxide, weighted with the carbon dioxide concentration (formula (I)), of 0.9 to 1.1 is set, wherein the DME-containing product gas is integrated into a method for converting dimethyl ether to olefins, whereby an olefin-containing product gas is formed, and wherein olefins, in particular ethylene and/or propylene, is/are separated from the olefin-containing product gas by means of separating methods.

Abstract: The invention relates to processes for production of dimethyl ether from methane or natural gas comprising: a dry-reforming step, wherein methane and carbon dioxide are converted into carbon monoxide and hydrogen, and a DME synthesis step, wherein the carbon monoxide and hydrogen formed in the dry-reforming step are converted into dimethyl ether, wherein the dry-reforming step and the synthesis step are carried out at identical pressures or at pressures, which do not differ more than 3 bar, preferably not more than 1 bar.

Abstract: The invention relates to processes for production of dimethyl ether from methane or natural gas comprising: a dry-reforming step, wherein methane and carbon dioxide are converted into carbon monoxide and hydrogen, and a DME synthesis step, wherein the carbon monoxide and hydrogen formed in the dry-reforming step are converted into dimethyl ether, wherein the dry-reforming step and the synthesis step are carried out at identical pressures or at pressures, which do not differ more than 3 bar, preferably not more than 1 bar.

Abstract: The invention relates to a method for processing coke oven gas, said coke oven gas containing hydrogen, wherein the coke oven gas is at least partially integrated into a method for producing dimethyl ether in conjunction with a gas containing carbon monoxide and/or carbon dioxide, whereby a DME-containing product gas is formed. At the outset of the method for the formation of dimethyl ether, a ratio of hydrogen to carbon monoxide, weighted with the carbon dioxide concentration (formula (I)), of 0.9 to 1.1 is set, wherein the DME-containing product gas is integrated into a method for converting dimethyl ether to olefins, whereby an olefin-containing product gas is formed, and wherein olefins, in particular ethylene and/or propylene, is/are separated from the olefin-containing product gas by means of separating methods.

Abstract: The invention concerns processes for preparing dimethyl ether from synthesis gas, comprising a synthesis step, wherein synthesis gas comprising hydrogen and carbon monoxide is converted into dimethyl ether and carbon dioxide, and a separation step, wherein unconverted synthesis gas is separated from carbon dioxide, wherein unconverted synthesis gas is separated from carbon dioxide by a membrane.

Abstract: The invention relates to a process for production of DME (17) comprising the steps of: generating a syngas (12) containing CO and H2 in a device (11) for syngas generation, passing the syngas (12) into a DME reactor (13) for direct synthesis of DME by catalysed conversion of the syngas (12) by means of a catalyst to form a product stream (14) containing DME, CO2, H2O, CH3OH and unconverted syngas (12). The invention provides that the direct synthesis is carried out at or close to the chemical equilibrium.

Abstract: The invention relates to a method for processing furnace gas (4) from a steel and/or iron works, wherein said furnace gas (4) contains carbon dioxide and/or carbon monoxide and is at least partially integrated into a method (7) for the formation of dimethyl ether in conjunction with a hydrogen-containing gas (2), whereby a DME-containing product gas (8) is formed. At the outset of the method (7) for forming dimethyl ether, a ratio of hydrogen to carbon monoxide, weighted with the carbon dioxide concentration (formula (I)), of 0.9 to 1.1 is set and dimethyl ether is formed. The DME-containing product gas (8) is integrated into a method (9) for converting dimethyl ether to olefins, whereby an olefin-containing product gas (10) is formed, and wherein olefins (12), in particular ethylene and/or propylene, is/are separated from the olefin-containing product gas (10) by means of separating methods (11).

Abstract: Process and arrangement for producing tetrahydrofuran from a hydrous butane diol solution contaminated by light volatile, organic compounds, comprising the following process stages: a) Distillative removal (K1) of the light volatile, organic compounds contained in the hydrous butane diol solution 1. b) Dehydrating (R) of the thus prepurified hydrous butane diol solution 3 over an acidic aluminum oxide catalyst. c) One-step or multi-step distillation (K2) of the thus obtained high-tetrahydrofuran fraction 8 for obtaining a pure tetrahydrofuran. In addition, a separation of the water from the hydrous butane diol solution to water contents of from 2 to 70% by weight, particularly 2 to 10% by weight, can take place before the dehydrating of the butane diol.