METHOD OF PRODUCING METHANOL BY STEAM CONVERSION

摘要

1. A method of producing methanol, comprising the steps of steam reforming a hydrocarbon feed (11) to produce synthesis gas (13) conversion with a given content of hydrogen and carbon oxides and supplying synthesis gas (13) to the synthesis loop (16) methanol, characterized in that the synthesis gas (13) conversion is mixed with an additional stream (26) of gas, which contains hydrogen and carbon oxides and in which the ratio of hydrogen to carbon is lower than that of the synthesis gas (13) conversion, and receive in the synthesis loop (16) mixed gas a reagent with a specific ratio of hydrogen to carbon, wherein said additional gas stream (26) is created at a higher pressure than the working pressure in the synthesis circuit (16), so that this additional gas stream (26) can be supplied to the synthesis circuit (16) without compressing. ! 2. The method according to claim 1, wherein the additional gas stream (26) is a synthesis gas obtained by partial oxidation of a hydrocarbon feed (21). ! 3. The method according to one of the preceding paragraphs, in which the synthesis gas (13) conversion and additional gas stream (26) are obtained from natural gas or a natural gas substitute (ZPG). ! 4. The method according to claim 3, in which the conversion synthesis gas stream (13) obtained by steam conversion of natural gas or ZPG, with a stoichiometric coefficient above the optimal stoichiometric coefficient for conversion to methanol, is mixed in an appropriate quantitative ratio with the additional stream (26 ) synthesis gas obtained by steam conversion of natural gas or gas with the addition of oxygen stream (23) and having a stoichiometric coefficient below �