Abstract: Provided is a method for cooling a methanol r synthesis reactor effluent vapor stream in a methanol production plant, wherein the method comprises the steps of: receiving, using an inlet of a cooler, the methanol synthesis reactor effluent vapor stream from an interchanger or a methanol synthesis reactor of the methanol production plant; and spraying, using a recirculation pump connected to a spraying device, a liquid condensate received from a methanol synthesis loop onto a tube sheet of the cooler which enables direct contact of the liquid condensate with the methanol synthesis reactor effluent vapor stream and cools the methanol synthesis reactor effluent vapor stream.

Abstract: A method of producing hydrogen from a hydrocarbon feedstock is provided. Wherein, at least a portion of a fuel stream comprises a superheated ammonia stream. And, at least: a first portion of a hydrogen-rich stream is combined with a shifted syngas stream prior to introduction into a pressure swing adsorber, a second portion of the hydrogen-rich stream is combined with the fuel stream prior to introduction into a steam methane reformer, and/or a third portion of the hydrogen-rich stream is combined with a hydrocarbon containing feedstock stream and a steam stream prior to introduction into a feed pre-heater. Heat integration between the ammonia vaporization and superheating steps is employed to cool process streams to minimize and even eliminate a dedicated cryogenic refrigeration system.

Abstract: The invention relates to a process for preparing methanol, in which a synthesis gas comprising carbon oxides and hydrogen is provided, which is passed at elevated pressure and elevated temperature through a catalyst bed of a methanol synthesis catalyst for conversion of the synthesis gas to methanol to obtain a product stream comprising crude methanol and unreacted synthesis gas. Unreacted synthesis gas is recycled to the catalyst bed inlet and combined with the synthesis gas, resulting in a mixed synthesis gas. The mixed synthesis gas at the catalyst bed inlet has a stoichiometry number SN of ?0.80, the catalyst bed in the conversion of the mixed synthesis gas to methanol has a maximum catalyst bed temperature of ?280° C., and the mixed synthesis gas at the catalyst bed inlet has a carbon monoxide concentration of ?20% by volume.

Abstract: A method for producing green olefins and green gasoline from renewable sources, the method including: providing CO2 and hydrogen as feed to produce methanol in a methanol reactor, to produce an MTO reaction effluent, reacting the MTO reaction effluent in a plurality of separation columns to separate hydrocarbons, wherein the plurality of separation columns includes a Deethanizer column, a Depropanizer column, and a Debutanizer column, hydrogenating a fraction of separated hydrocarbons in the Debutanizer column with the hydrogen in a hydrogenation reactor, wherein the fraction of separated hydrocarbons from the Debutanizer column includes C5+ hydrocarbons; producing the green gasoline and Liquefied Petroleum Gas (LPG) by stabilizing the hydrogenated hydrocarbons in a gasoline stabilizer column; and producing the olefins by separating ethylene from C2 hydrocarbons using a C2 splitter column and by separating propylene from C3 hydrocarbons using a C3 splitter column.

Abstract: The invention relates to a process and to a plant for preparation of olefins from oxygenates (OTO), where it is simultaneously also the intention to optimize the yield of the BTX aromatics benzene, toluene and the isomeric xylenes. According to the invention, for this purpose, the gasoline fraction obtained in the OTO process according to the prior art is added to an aromatization reactor. Multistage separation of the product stream from the aromatization reactor affords a product stream containing BTX aromatics and a gasoline fraction that has been depleted of olefins, cycloalkanes and cycloalkenes.

Abstract: The present invention relates to a process and plant for producing a hydrogen- and carbon oxides-having synthesis gas by partial oxidation of a carbonaceous feedstock having nitrogen compounds. The invention takes advantage of the different solubility of NH3 and CO2 as the synthesis gas stream is cooled. Water is condensed continuously throughout the cooling of the synthesis gas stream. NH3 preferentially dissolves or condenses into the liquid phase during cooling, but at relatively high temperatures, above about 80 to 100° C. Further condensation at lower temperatures then preferentially dissolves or condenses CO2 into the liquid phase. Thus, the formation of ammonium salts during cooling of the synthesis gas is prevented.

Abstract: A method of producing hydrogen from a hydrocarbon feedstock is provided. Wherein, at least a portion of a fuel stream comprises a superheated ammonia stream. And, at least: a first portion of a hydrogen-rich stream is combined with a shifted syngas stream prior to introduction into a pressure swing adsorber, a second portion of the hydrogen-rich stream is combined with the fuel stream prior to introduction into a steam methane reformer, and/or a third portion of the hydrogen-rich stream is combined with a hydrocarbon containing feedstock stream and a steam stream prior to introduction into a feed pre-heater. Heat integration between the ammonia vaporization and superheating steps is employed to cool process streams to minimize and even eliminate a dedicated cryogenic refrigeration system.

Abstract: The invention relates to a process for producing olefins from oxygenates with variable production of ethylene and propylene. According to the invention, the process is switched from a state 1 with lower ethylene production to a state 2 with higher ethylene production in that: the fraction C2re of the ethylene product stream which is recycled to the OTO reactor is lowered from a first value C2re,1 to a second value C2re,2, resulting in a change dC2re=C2re,1?C2re,2, the fraction C4+re of the C4+ product stream containing C4+ olefins which is recycled to the OTO reactor is lowered from a first value C4+re,1 to a second value C4+re,2, resulting in a change dC4+re=C4+re,2?C4+re,1, where the changes dC2re and dC4+re in a mass flow ratio dC4+re/dC2re, where the mass flow ratio is between 70% and 130%.

Abstract: A method and apparatus for producing methanol from a synthesis gas is provided. The method includes (i) producing, in a partial oxidation chamber, the synthesis gas having a stoichiometric number of less than 1.8 by performing a partial oxidation process with a hydrocarbon stream and an oxygen stream, (ii) passing, in a water-gas shift reactor, the synthesis gas over a water-gas shift catalyst to convert at least a portion of carbon monoxide and water into hydrogen and carbon dioxide, (iii) producing a dry, shifted synthesis gas by separating liquid condensate from shifted synthesis gas, (iv) combining, in a recycle compressor, the dry, shifted synthesis gas with a recycle synthesis gas comprised of unreacted synthesis gas and a hydrogen rich product to form a mixed synthesis gas stream, and (v) converting, in a cooled methanol synthesis reactor, at least a portion of the mixed synthesis gas stream into methanol.

Abstract: The present invention specifies a process and a plant for production of a synthesis gas stream which makes it possible to produce the synthesis gas stream with a stoichiometry number suitable for the methanol synthesis or other syntheses. To this end an electrolytically produced hydrogen stream is admixed with a hydrocarbon-containing input gas stream and the resulting hydrogen-containing and hydrocarbon-containing input gas stream is reacted in the presence of oxygen to afford synthesis gas in a reforming step. The process mode according to the invention has the advantage that the electrolytically produced hydrogen stream need not be treated, in particular no oxygen need be removed from the electrolytically produced hydrogen stream. The invention further includes a process and a plant for production of methanol including the process according to the invention and the plant according to the invention for production of the synthesis gas stream.

Abstract: The invention relates to a process for preparing methanol, in which a synthesis gas comprising carbon oxides and hydrogen is provided, which is passed at elevated pressure and elevated temperature through a catalyst bed of a methanol synthesis catalyst for conversion of the synthesis gas to methanol to obtain a product stream comprising crude methanol and unreacted synthesis gas. Unreacted synthesis gas is recycled to the catalyst bed inlet and combined with the synthesis gas, resulting in a mixed synthesis gas. The mixed synthesis gas at the catalyst bed inlet has a stoichiometry number SN of ?0.80, the catalyst bed in the conversion of the mixed synthesis gas to methanol has a maximum catalyst bed temperature of ?280° C., and the mixed synthesis gas at the catalyst bed inlet has a carbon monoxide concentration of ?20% by volume.

Abstract: Provided is a method for cooling a methanol r synthesis reactor effluent vapor stream in a methanol production plant, wherein the method comprises the steps of: receiving, using an inlet of a cooler, the methanol synthesis reactor effluent vapor stream from an interchanger or a methanol synthesis reactor of the methanol production plant; and spraying, using a recirculation pump connected to a spraying device, a liquid condensate received from a methanol synthesis loop onto a tube sheet of the cooler which enables direct contact of the liquid condensate with the methanol synthesis reactor effluent vapor stream and cools the methanol synthesis reactor effluent vapor stream.

Abstract: A method for producing green olefins and green gasoline from renewable sources, the method including: providing CO2 and hydrogen as feed to produce methanol in a methanol reactor, to produce an MTO reaction effluent, reacting the MTO reaction effluent in a plurality of separation columns to separate hydrocarbons, wherein the plurality of separation columns includes a Deethanizer column, a Depropanizer column, and a Debutanizer column, hydrogenating a fraction of separated hydrocarbons in the Debutanizer column with the hydrogen in a hydrogenation reactor, wherein the fraction of separated hydrocarbons from the Debutanizer column includes C5+ hydrocarbons; producing the green gasoline and Liquefied Petroleum Gas (LPG) by stabilizing the hydrogenated hydrocarbons in a gasoline stabilizer column; and producing the olefins by separating ethylene from C2 hydrocarbons using a C2 splitter column and by separating propylene from C3 hydrocarbons using a C3 splitter column.

Abstract: A method and apparatus for producing methanol from a synthesis gas is provided. The method includes (i) producing, in a partial oxidation chamber, the synthesis gas having a stoichiometric number of less than 1.8 by performing a partial oxidation process with a hydrocarbon stream and an oxygen stream, (ii) passing, in a water-gas shift reactor, the synthesis gas over a water-gas shift catalyst to convert at least a portion of carbon monoxide and water into hydrogen and carbon dioxide, (iii) producing a dry, shifted synthesis gas by separating liquid condensate from shifted synthesis gas, (iv) combining, in a recycle compressor, the dry, shifted synthesis gas with a recycle synthesis gas comprised of unreacted synthesis gas and a hydrogen rich product to form a mixed synthesis gas stream, and (v) converting, in a cooled methanol synthesis reactor, at least a portion of the mixed synthesis gas stream into methanol.

Abstract: The invention relates to a process for producing methanol and to a plant for producing methanol. A first fresh gas suitable for production of methanol and having a high carbon dioxide content is pre-compressed by a first compressor stage to obtain a second fresh gas. The second fresh gas is merged with a recycle gas stream and further compressed to synthesis pressure in a second compressor stage. Catalytic conversion of the thus obtained synthesis gas stream in a plurality of serially arranged reactor stages with intermediate condensation and separation of the crude methanol reduces the recycle gas amount in the synthesis circuit to such an extent that recycle gas may be directly recycled to the second fresh gas stream, thus ensuring that no recycle gas compressor stage is required and that the total compressor power may be reduced.

Abstract: The invention relates to a process for producing methanol and to a plant for producing methanol. A first fresh gas suitable for production of methanol and having a high carbon dioxide content is pre-compressed by a first compressor stage to obtain a second fresh gas. The second fresh gas is merged with a recycle gas stream and further compressed to synthesis pressure in a second compressor stage. Catalytic conversion of the thus obtained synthesis gas stream in a plurality of serially arranged reactor stages with intermediate condensation and separation of the crude methanol reduces the recycle gas amount in the synthesis circuit to such an extent that recycle gas may be directly recycled to the second fresh gas stream, thus ensuring that no recycle gas compressor stage is required and that the total compressor power may be reduced.

Abstract: The invention relates to a multi-strand plant and a corresponding process for producing olefins from oxygenates in which a plurality of reactor trains which each comprise one or more catalyst-containing oxygenate-to-olefin (OTO) reaction zones are arranged in parallel and operated in parallel, wherein at least one of the parallel reaction zones may be operated in a regeneration mode while the OTO synthesis reaction may be performed in the other reaction zones parallel thereto. The partial product streams obtained from the individual reactor trains operated in a synthesis mode are discharged via partial product conduits, combined into a complete product conduit using a connecting device, compressed using a compressor and separated into a plurality of olefin-containing hydrocarbon fractions using a multi-stage workup apparatus. The inventive configuration of the plant and of the process reduces pressure drops and thus enhances the yield for short-chain olefins, for example propylene.

Abstract: The invention relates to a multi-strand plant and a corresponding process for producing olefins from oxygenates in which a plurality of reactor trains which each comprise one or more catalyst-containing oxygenate-to-olefin (OTO) reaction zones are arranged in parallel and operated in parallel, wherein at least one of the parallel reaction zones may be operated in a regeneration mode while the OTO synthesis reaction may be performed in the other reaction zones parallel thereto. The partial product streams obtained from the individual reactor trains operated in a synthesis mode are discharged via partial product conduits, combined into a complete product conduit using a connecting device, compressed using a compressor and separated into a plurality of olefin-containing hydrocarbon fractions using a multi-stage workup apparatus. The inventive configuration of the plant and of the process reduces pressure drops and thus enhances the yield for short-chain olefins, for example propylene.