| abstract |
The invention discloses a kind of method for being separated from low-temperature methanol washing tail-gas and reclaiming hydrocarbon component, the present invention is existing to be compressed low-temperature methanol washing tail-gas, the combination of three kinds of technologies is absorbed by two-stage pressure-variable adsorption, UF membrane, shallow cold methanol afterwards, realize the qualified discharge of tail gas, carbon dioxide and non-methane hydrocarbon are reclaimed simultaneously, the purity for the carbon dioxide that the present invention reclaims realizes huge economic value more than 97mol%, the purity of the non-methane light hydrocarbon material of recovery more than mol90%. |