FIELD: chemical industry.
SUBSTANCE: invention describes a combined method of producing methyl acetate and methanol in carbonylation of dimethyl ether with synthesis gas when extracting methyl acetate and unreacted synthesis gas and feeding unreacted synthesis gas and fresh synthesis gas for synthesis of methanol. Combined method of producing methyl acetate and methanol involves the following steps: (I) feeding the first synthesis gas and dimethyl ether into the carbonylation reaction zone and reacting dimethyl ether with synthesis gas in the presence of a carbonylation catalyst to form a gaseous carbonylation reaction product which includes methyl acetate and hydrogen-enriched synthesis gas, (II) withdrawing the carbonylation reaction product from the carbonylation reaction zone and recovering the liquid stream and the synthesis gas stream enriched with the methyl acetate and (III) feeding at least a portion of synthesis gas recovered from the carbonylation reaction product and the second synthesis gas to the methanol synthesis zone and contacting the synthesis gas with the methanol synthesis catalyst to form a methanol synthesis product comprising methanol and unreacted synthesis gas.
EFFECT: described is a combined method of producing methyl acetate and methanol.
31 cl, 3 dwg, 6 ex, 6 tbl
