Double-container combined vertical decarburized biogas purification device

The utility model relates to a double-container combined type vertical decarburized biogas purification device which comprises a control unit and a biogas treatment unit, and the control unit comprises a PLC (Programmable Logic Controller) control cabinet; the biogas treatment unit comprises a coarse desulfurization tank, a gas-water separator, a biogas compressor, a flash tank, an absorbent delivery pump, a freeze dryer, a carbon dioxide buffer tank, an absorption tower, a regenerated liquid delivery pump, a regeneration tower and a tower kettle reboiler. The device is small in occupied area, convenient to install, high in operation flexibility, low in investment, maintenance and operation cost and good in economic benefit, overcomes the defect that a traditional integrated biogas purification device cannot be provided with a tower, is suitable for transforming various medium and small-scale biogas sources into green biological natural gas sources, and reduces greenhouse gas emission. 本实用新型涉及一种双集装箱组合式立式脱碳沼气提