Liquid methanol collecting system

The invention relates to a methanol collection system, in particular to a liquid methanol collection system which comprises a carbon dioxide compressor, a separation device, a methanol collection device and a cold box. The separation device is connected with the carbon dioxide compressor; the methanol collecting device is connected with the separating device, the methanol collecting device is connected with a second pipeline, the second pipeline is connected with a condensation emptying pipeline, and a torch system for combusting methanol gas is arranged on the condensation emptying pipeline; the condensation emptying pipeline is arranged in the cold box and is connected with a third pipeline; and the third pipeline is connected with the first pipeline through a secondary reflux pipeline. According to the invention, the problem that the carbon dioxide raw material gas contains a large amount of saturated methanol gas is effectively solved, the liquefaction, collection and storage of the saturated methanol gas