INTEGRATED METHOD OF ACETIC ACID AND METHANOL PRODUCTION Russian patent published in 2009 - IPC C07C27/14 C01B3/38 C01B3/50 C07C29/151 C07C31/04 C07C51/12 C07C53/08 C07C37/05 C07C69/15 

FIELD: chemistry.

SUBSTANCE: invention relates to improved method of producing methanol, acetic acid and optionally vinyl acetate, which includes integrated stages: separation of hydrocarbons source into first and second hydrocarbons flows; vapour reforming of first hydrocarbons flow with vapour in order to obtain subjected to reforming flow; autothermal reforming of mixture of subjected to reforming flow and second hydrocarbons flow with oxygen and carbon dioxide in order to obtain synthesis-gas flow; separation of smaller part of synthesis-gas flow into flow with higher carbon dioxide content, flow with higher hydrogen content and flow with higher content of carbon oxide; recirculation of flow with higher carbon dioxide content to autothermal reforming; compression of remaining part of synthesis-gas flow, CO₂ flow, not necessarily from associated process, and at least part of flow with higher hydrogen content for supplying feeding flow to circuit of methanol synthesis in order to obtain methanol product, whose stoichiometric coefficient is determined as [(H₂-CO₂)/(CO+CO₂)], and stoichiometric coefficient of feeding flow constitutes from 2.0 to 2.1; acetic acid synthesis from at least part pf methanol product and flow with higher content of carbon oxide, and optionally synthesis of vinyl acetate from at least part of synthesised acetic acid.

EFFECT: elaboration of improved method of producing methanol, acetic acid, characterised by highly economical indices and low intensity of CO₂ emission.

23 cl, 2 ex, 2 dwg