摘要:
Process for the synthesis of hydrocarbon constituents of gasoline comprising catalytic conversion in a gasoline synthesis step of an oxygenate-containing feed comprising methanol and/or dimethyl ether and a mixture of at least on a total oxygenate basis 0.05 wt % C3+ higher alcohols and/or their oxygenate equivalents to hydrocarbon constituents of gasoline.
摘要:
A process for the preparation of hydrocarbon products including the steps of (a) providing a stream containing oxygenates; (b) mixing the stream with a recycle stream to form a gasoline feed stream; (c) contacting the gasoline feed stream with one or more gasoline synthesis catalysts to obtain an effluent stream with higher hydrocarbons boiling in the gasoline range; (d) withdrawing from step (c) the effluent stream; and (e) splitting a part of the effluent stream to form the recycle stream which is optionally further reduced in content of water or enriched in hydrogen, then pressurized and recycled to step (b).
摘要:
A process and reactor for the production of acetic acid comprising the steps of: passing a feed stream containing ethanol and water together with a predetermined feed rate of an oxygen containing atmosphere in presence of one or more catalysts being active in simultaneous non-oxidative and oxidative conversion of ethanol to a product stream with acetic acid; recovering from the product stream a stream of acetic acid; optionally recovering reactive derivatives of acetic acid and recycling these to step (a).
摘要:
A process and reactor for the production of acetic acid comprising the steps of: passing a feed stream containing ethanol and water together with a predetermined feed rate of an oxygen containing atmosphere in presence of one or more catalysts being active in simultaneous non-oxidative and oxidative conversion of ethanol to a product stream with acetic acid; recovering from the product stream a stream of acetic acid; optionally recovering reactive derivatives of acetic acid and recycling these to step (a).
摘要:
Process for the preparation of acetic acid comprising the steps of: providing a feed stream of water and ethanol; adding the feed stream to a recycle stream comprising unconverted ethanol and water; heating the admixture to a predetermined reaction temperature and passing the thus heated admixture over a catalyst being active in non-oxidative conversion of ethanol to acetic acid to obtain an effluent being rich in acetic acid; optionally cooling the effluent; separating the effluent into a stream rich in acetic acid being essentially free of water, a hydrogen containing stream, and a stream with unconverted amounts of ethanol, water and reactive derivates of acetic acid and optionally ethyl acetate; recycling the stream with unconverted amounts of ethanol and water to step (a); determining the amount of water in the recycle stream and adjusting the composition of the ethanol and water feed stream in step (a) to a water/ethanol mole ratio of between 0.3/0.7 to 0.6/0.4.
摘要:
A process for the preparation of hydrocarbon products and for the generation of power that includes the steps of (a) providing a synthesis gas having a hydrogen to carbon monoxide ratio of between 0.1 and 1; (b) contacting the synthesis gas with one or more catalysts which together catalyse a reaction of hydrogen and carbon monoxide to oxygenates comprising methanol and dimethyl ether with a dimethyl ether to methanol ratio of higher than 2 and a carbon dioxide content of above 20 mole %; (c) contacting the carbon dioxide containing oxygenate mixture at an inlet temperature of between 240° and 4000° C. with a catalyst being active in the conversion of oxygenate to higher hydrocarbons and a tail gas being rich in carbon dioxide; (d) combusting the carbon dioxide rich tail gas in a gas turbine combustion chamber to flue gas; and (e) expanding the flue gas stream through a gas turbine for the generation of power.
摘要:
Process for the synthesis of hydrocarbon constituents of gasoline comprising catalytic conversion in a gasoline synthesis step of an oxygenate-containing feed comprising methanol and/or dimethyl ether and a mixture of at least on a total oxygenate basis 0.05 wt % C3+ higher alcohols and/or their oxygenate equivalents to hydrocarbon constituents of gasoline.
摘要:
A process for the preparation of hydrocarbon products and for the generation of power comprising the steps of (a) providing a synthesis gas having a hydrogen to carbon monoxide ratio of between 0.1 and 1; (b) contacting the synthesis gas with one or more catalysts which together catalyse a reaction of hydrogen and carbon monoxide to oxygenates comprising methanol and dimethyl ether with a dimethyl ether to methanol ratio of higher than 2 and a carbon dioxide content of above 20 mole %; (c) contacting the carbon dioxide containing oxygenate mixture at an inlet temperature of between 240 and 4000 C with a catalyst being active in the conversion of oxygenate to higher hydrocarbons and a tail gas being rich in carbon dioxide; (d) combusting the carbon dioxide rich tail gas, optionally admixed with fresh carbon monoxide rich synthesis gas in a gas turbine combustion chamber to flue gas; and (e) expanding the flue gas stream through a gas turbine for the generation of power.
摘要:
A process for the preparation of acetic acid by catalytic conversion of a synthesis gas being rich in hydrogen and carbon monoxide, comprising steps of: (i) introducing a stream of the synthesis gas into a first reaction step at a predetermined pressure and temperature and reacting the synthesis gas in the presence of a catalyst being active in formation of methanol and dehydration of methanol, so as to obtain a gaseous process phase containing methanol, dimethyl ether, and water; (ii) cooling the gaseous process phase of step (i) and obtaining a liquid phase with the methanol, dimethyl ether and water and a gaseous phase comprising carbon dioxide and residual amounts of dimethyl ether; (iii) introducing the liquid phase formed in step (ii) into a second reaction step at a predetermined pressure and temperature and adding a predetermined amount of carbon monoxide; and (iv) carbonylating methanol and dimethyl ether in the liquid phase with carbon monoxide by contact with a catalyst being active in the carbonylation of alcohols and ethers with carbon monoxide; and (v) recovering from effluent of step (iv) a product stream mainly consisting of the acetic acid product.