METHOD OF OBTAINING GLYCOLIC ACID ETHERS Russian patent published in 2015 - IPC C07C69/675 C07C67/03 C07C59/06 C07C51/10 

FIELD: chemistry.

SUBSTANCE: invention relates to processes of recycling of hydrocarbon gases with obtaining liquid chemical products, in particular to obtaining glycolic acid ethers. method of obtaining methyl ether of glycolic acid includes stages of formaldehyde carbonylation and glycolic acid etherification, where ethane or ethane-containing hydrocarbon gas is mixed with oxygen or oxygen-containing gas in molar ratio ethane:oxygen, equal to 40÷1:1, oxidation at temperature 350-550°C and pressure 20-40 bar, cooling of obtained products and their separation into flow (I), containing formaldehyde and water, and flow (II), containing CO, methyl and ethyl alcohols, and ethane and methane that did not react, supply of flow (I) to the stage of formaldehyde carbonylation with obtained in the process CO, supply of flow (II) to the stage of glycolic acid etherification with contained in flow composition methyl and ethyl alcohols, after the stage obtained are: flow of etherification products (III), from which methyl ether of glycolic acid is separated by known methods, and flow (IV), containing CO, ethane and methane that did not react, flow (IV) is supplied to the stage of carbonylation, ethane and methane that did not react, after the stage of carbonylation are partly returned to partial oxidation and/or are used as fuel gas.

EFFECT: considerable simplification of technology in comparison with known methods of obtaining glycolic acid ethers, elimination of highly energy-consuming and capital-intensive stage of synthesis-gas obtaining.

4 ex, 1 dwg