A method for producing green olefins and green gasoline from renewable sources, the method including: providing CO.sub.2 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 C.sub.5+ 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 C.sub.2 hydrocarbons using a C.sub.2 splitter column and by separating propylene from C.sub.3 hydrocarbons using a C.sub.3 splitter column.

The present disclosure provides an integrated process and a Cu/Zn-based catalyst system for synthesizing methanol from CO.sub.2 and generating electricity from hydrocarbon feedstock. The process includes steps of gasifying hydrocarbon feedstock into syngas by using oxygen and using the produced syngas as a fuel in a power generation unit, reusing a first part of an exhaust stream of the power generation unit as a reactant in the gasification unit. Using a second part of the said exhaust stream as a reactant for methanol synthesis in a methanol reactor, wherein, the second part is treated to separate CO.sub.2 and water, and CO.sub.2 is used as the reactant for methanol synthesis. Operating an electrolyzer during non-peak hours to produce hydrogen, wherein, a required stoichiometric ratio of the produced hydrogen is transferred into the methanol reactor for methanol synthesis, wherein, a Cu/Zn-based catalyst system is used for methanol synthesis through a direct hydrogenation reaction of CO.sub.2.

Methods and systems for the production of one or more products from a gas stream produced in a methanol production process. The method comprises converting at least a portion of a methane feedstock to a substrate comprising CO and H2. The substrate comprising CO and H2 is anaerobically fermented in a bioreactor to produce one or more alcohols. The method and system may further include process for the production of methanol processes for the production of acetic acid.

Method for the control of pressure in a loop for the preparation of ammonia or methanol by means of an anti-surge control valve of a compressor and/or a compressor flow regulation valve for the recirculation of loop recirculation gas at variating flow supply of fresh synthesis gas.

A process for the purification of CO.sub.2 from chlorinated hydrocarbons and non-chlorinated hydrocarbons, comprising: contacting a CO.sub.2 stream with a chromium oxide catalyst, wherein the stream comprises the CO.sub.2, and impurities, wherein the impurities comprise the non-chlorinated hydrocarbons and the chlorinated hydrocarbons; forming a purified CO.sub.2 stream by interacting the impurities with the chromium oxide catalyst to form additional CO.sub.2 and chromium chloride; and regenerating the chromium oxide catalyst by contacting the chromium chloride with an oxygen containing gas stream.

A method for the control of pressure in a loop for the preparation of ammonia or methanol by using an anti-surge control valve of a compressor and/or a compressor flow regulation valve for the recirculation of loop recirculation gas at variating flow supply of fresh synthesis gas.

A method for producing high-efficiency methanol capable of reducing emission of carbon dioxide. The method includes: a first step of preparing mixed gas by using steam and natural gas as raw materials and converting C.sub.2+ hydrocarbon contained in the natural gas into methane on a catalyst; a second step of preparing a synthesis gas including carbon monoxide, carbon dioxide, and hydrogen by reforming the mixed gas in a reformer filled with a reforming catalyst; and a third step of preparing methanol by using the synthesis gas as the raw material and reacting the synthesis gas.

A method for producing high-efficiency methanol capable of reducing emission of carbon dioxide. The method includes: a first step of preparing mixed gas by using steam and natural gas as raw materials and converting C.sub.2+ hydrocarbon contained in the natural gas into methane on a catalyst; a second step of preparing a synthesis gas including carbon monoxide, carbon dioxide, and hydrogen by reforming the mixed gas in a reformer filled with a reforming catalyst; and a third step of preparing methanol by using the synthesis gas as the raw material and reacting the synthesis gas.

The invention relates to a process and a plant for producing methanol in which a compressed make-up gas stream which contains at least one carbon oxide and hydrogen is combined with a residual gas to afford a synthesis gas stream and reacted to afford methanol. According to the invention the residual gas stream and the make-up gas stream are combined using a jet pump, wherein the compressed make-up gas stream is supplied to the jet pump as motive medium via its motive media connection at a pressure p.sub.1 and the residual gas stream is supplied to the jet pump as suction medium via its suction port at a pressure p.sub.3 and wherein the synthesis gas stream is discharged from the jet pump via its pressure port at a pressure p.sub.2 and subsequently supplied to the synthesis stage and wherein p.sub.1>p.sub.2>p.sub.3.

The invention relates to a process and a plant for producing methanol in which a compressed make-up gas stream which contains at least one carbon oxide and hydrogen is combined with a residual gas to afford a synthesis gas stream and reacted to afford methanol. According to the invention the residual gas stream and the make-up gas stream are combined using a jet pump, wherein the compressed make-up gas stream is supplied to the jet pump as motive medium via its motive media connection at a pressure p.sub.1 and the residual gas stream is supplied to the jet pump as suction medium via its suction port at a pressure p.sub.3 and wherein the synthesis gas stream is discharged from the jet pump via its pressure port at a pressure p.sub.2 and subsequently supplied to the synthesis stage and wherein p.sub.1>p.sub.2>p.sub.3.