Protective gas tail gas recovery treatment device and method

The invention relates to the related technical field of shielding gas tail gas recovery treatment, in particular to a shielding gas tail gas recovery treatment device and method.The shielding gas tail gas recovery treatment device comprises a base, a gas inlet buffer box, an oil suction filter, an oxygen reactor and a cooler, the base is formed by welding channel steel, and the gas inlet buffer box is of a rectangular box body structure; an inner cavity of a box body of the air inlet buffer box is divided into a lower cavity and an upper cavity through a partition plate, the lower cavity is communicated with an air inlet, the upper cavity is communicated with an air outlet, and the oil suction filter is connected with the air outlet of the air inlet buffer box through a first-stage pipeline; according to the protective gas tail gas recycling device, the protective gas tail gas recycling device formed by combining the base, the gas inlet buffer tank, the oil absorption filter, the oxygen reactor and the cooler