Process for the synchronous absorption of carbon dioxide from flue gas and synthesis of dialkyl carbonates and alkylene carbonates

摘要

The present invention describes a synchronous CCU process (carbon dioxide capture and utilization) for the absorption of carbon dioxide from flue gas and other CO2-containing substance sources and the simultaneous synthesis of dialkyl carbonates and alkylene carbonates. The general subject of the innovation is on the one hand in the sense of a "carbon dioxide capture" the absorption of CO2 from flue gas and other CO2-containing substance sources with ammonia and / or amines with the formation of ammonium carbamates or ammonium hydrogen carbonates or ureas or urea intermediates and on the on the other hand, in the sense of a “carbon dioxide utilization”, the conversion of ammonium carbamates or ammonium hydrogen carbonates or ureas or urea intermediates with aliphatic, alicyclic or unsaturated, also unsaturated, aromatic alcohols to dialkyl carbonates or alkylene carbonates in the form that the CO2 absorbent is released again is fed back into the repetitive process. Repetitive process management is extremely energy and CO2 efficient.